WO2021172764A1

WO2021172764A1 - Display device and control method therefor

Info

Publication number: WO2021172764A1
Application number: PCT/KR2021/000893
Authority: WO
Inventors: 이종인; 양관식; 김세현; 주소영; 최길수
Original assignee: 삼성전자주식회사
Priority date: 2020-02-26
Filing date: 2021-01-22
Publication date: 2021-09-02
Also published as: KR20210108658A

Abstract

Disclosed are a display device and a control method therefor. The display device of the present disclosure may comprise: a display; a housing that includes a roller for rolling the display and houses the display rolled through the roller; a memory; and a processor that controls the display so as to display a first image in a first region of the display exposed outside the housing, and when a second region of the first region displaying the first image is rolled and accommodated in the housing through the roller, controls the display so as to display a second image for reducing burn-in phenomenon in the second region.

Description

Display device and control method thereof

The present disclosure relates to a display device and a method for controlling the display device, and more particularly, to a display device for reducing burn-in on a display accommodated in a housing, and a control method thereof.

Recently, as the demand for OLED (Organic Light-Emitting Diode) as a display panel of various display devices and portable terminals increases, research and development of OLED technology is also increasing.

However, in the case of self-luminous display panels such as OLED, PDP (Plasma Display Panel), and CRT (Cathode-Ray Tube), there is a disadvantage in that they are vulnerable to a burn-in phenomenon. The burn-in phenomenon is a phenomenon in which an afterimage is permanently left on a display due to partial deterioration of a light emitting element belonging to a self-luminous display panel.

In response to this, various techniques have been devised to effectively solve the burn-in phenomenon occurring on the self-luminous display panel. However, in the case of the existing technology, there is a limitation that the operation of reducing the burn-in phenomenon may be exposed to the outside and cause inconvenience to the user.

The present disclosure has been devised to solve the above-described problems, and an object of the present disclosure is to reduce the burn-in phenomenon with respect to the display area accommodated inside the housing when the area exposed outside the housing of the display is accommodated inside the housing. An object of the present invention is to provide a display device and a method for controlling the same.

According to an embodiment of the present disclosure, a display device includes a display, a roller for rolling the display, and a housing for housing the display rolled through the roller, a memory, and a second exposed out of the housing among the displays The display is controlled to display a first image in a first area, and when a second area among the first areas displaying the first image through the roller is rolled and accommodated in the housing, burn-in in the second area A processor for controlling the display to display a second image for reducing a burn-in phenomenon may be included.

In addition, the display device further includes a plurality of supporting blocks disposed on the rear surface of the display to support the display, and each of the plurality of support blocks may be rolled up in a roll form through the roller along a rolling axis.

In addition, at least one of the plurality of support blocks may include a protrusion to form a space between the at least one support block and a display area facing each of the at least one support block.

In addition, the processor may control the display to first display the second image in a third area supported by a support block first exposed outside the housing among the second area.

In addition, the processor obtains information on the usage amount of the light emitting device belonging to an area corresponding to each of the at least one support block supporting the first area, and the second area of the first area is passed through the roller. When rolling in the housing, an order of displaying the second image among regions corresponding to each of the support blocks supporting the second region may be determined based on information on the amount of the light emitting device used.

And, when the second image is displayed in a fourth region supported by one of the support blocks supporting the second region, the processor is configured to display the second image in the display region supported by the support block facing the fourth region. Images may not be displayed.

In addition, the processor may be configured to include, when the second area of the first area displaying the first image through the roller is rolled and accommodated in the housing while the first image is displayed, the second area of the first area The display may be controlled to display a part of the first image on the remaining area except for the second area.

And, the display is controlled to display the second image from a boundary region between a region exposed outside the housing and the second region of the first region to a partial region of the second region, the second image comprising: The image of the boundary region among a portion of the first image may be an image extending from the boundary region to a partial region of the second region.

The second image may be an image whose brightness decreases from the boundary region toward a boundary line of a partial region of the second region.

In addition, the housing further includes at least one fan circulating the air inside the housing, and the processor detects a region having the highest temperature among the inside of the housing, and the temperature of the at least one fan The air inside the housing may be discharged using a fan corresponding to the area having the highest , and air may be sucked into the housing using the remaining fans.

The processor may be configured to obtain information on usage of a plurality of light emitting devices belonging to the first area, and when displaying the second image in the second area, based on the information on usage of the plurality of light emitting devices , it is possible to adjust the amount of power applied to the light emitting device belonging to the second region.

Meanwhile, in the method of controlling a display device including a roller for rolling a display and a housing for housing the display rolled through the roller according to an embodiment of the present disclosure, a first area of the display exposed outside the housing Displaying a first image on the screen, and when a second region of the first region displaying the first image through the roller is rolled and accommodated in the housing, for reducing the burn-in phenomenon in the second region It may include displaying the second image.

Also, at least one of the plurality of support blocks may include a protrusion to form a space between the at least one support block and a display area facing each of the at least one support block.

The displaying of the second image may include displaying the second image first in a third region supported by a support block first exposed outside the housing among the second region.

In addition, the displaying of the second image may include: obtaining information on a usage amount of a light emitting device belonging to an area corresponding to each of the at least one support block supporting the first area; When region 2 is rolled inside the housing through the roller, an order of displaying the second image among regions corresponding to each of the support blocks supporting the second region is determined based on information on the amount of the light emitting device used may include the step of

And, the displaying of the second image may include: when the second image is displayed on a fourth region supported by one of the support blocks supporting the second region, the support block facing the fourth region supports the second image. The method may include not displaying the second image on the display area.

In addition, the displaying of the second image may include, when the second region among the first regions displaying the first image through the roller while the first image is displayed is rolled and accommodated in the housing, the displaying a portion of the first image on a region other than the second region of a first region, and the second region from a boundary region between a region exposed outside the housing and the second region among the first region and displaying the second image up to a partial region of It could be a video.

In addition, the second image may be an image whose brightness decreases from the boundary region toward a boundary line of a partial region of the second region.

In addition, the control method includes the steps of detecting an area having the highest temperature among the inside of the housing, and discharging air inside the housing using a fan corresponding to the area having the highest temperature among at least one fan, and using the remaining fans The method may further include sucking air into the housing.

In addition, the displaying of the second image may include: obtaining information on usage of a plurality of light emitting devices belonging to the first region; and displaying the second image in the second region, the plurality of light emitting devices The method may include adjusting the amount of power applied to the light emitting device belonging to the second region based on the information on the usage amount of the device.

As described above, according to various embodiments of the present disclosure, the display device may minimize the discomfort that may be caused to the user by performing an operation to reduce the burn-in phenomenon on the display area accommodated in the housing.

1A and 1B are diagrams for explaining the operation and configuration of a display device according to an embodiment of the present disclosure;

2 is a block diagram illustrating a configuration of a display device according to an embodiment of the present disclosure;

3A and 3B are views for explaining a protrusion included in a support block on a display device according to an embodiment of the present disclosure;

4 is a view for explaining a process in which a display device determines an order of displaying images for reducing burn-in according to an embodiment of the present disclosure;

5A and 5B are views for explaining a process in which a display device displays an image for reducing burn-in according to an embodiment of the present disclosure;

6A and 6B are views for explaining a process in which a display apparatus displays an image for reducing burn-in according to an embodiment of the present disclosure;

7 is a view for explaining a process in which the display device circulates air inside the housing according to an embodiment of the present disclosure;

8 is a flowchart illustrating a method of controlling a display apparatus according to an embodiment of the present disclosure.

Since the present embodiments can apply various transformations and can have various embodiments, specific embodiments are illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the scope of the specific embodiments, and should be understood to include various modifications, equivalents, and/or alternatives of the embodiments of the present disclosure. In connection with the description of the drawings, like reference numerals may be used for like components.

In describing the present disclosure, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present disclosure, a detailed description thereof will be omitted.

In addition, the following examples may be modified in various other forms, and the scope of the technical spirit of the present disclosure is not limited to the following examples. Rather, these embodiments are provided to more fully and complete the present disclosure, and to fully convey the technical spirit of the present disclosure to those skilled in the art.

The terms used in the present disclosure are used only to describe specific embodiments, and are not intended to limit the scope of rights. The singular expression includes the plural expression unless the context clearly dictates otherwise.

In the present disclosure, expressions such as “have,” “may have,” “include,” or “may include” indicate the presence of a corresponding characteristic (eg, a numerical value, function, operation, or component such as a part). and does not exclude the presence of additional features.

In this disclosure, expressions such as “A or B,” “at least one of A and/and B,” or “one or more of A or/and B” may include all possible combinations of the items listed together. . For example, "A or B," "at least one of A and B," or "at least one of A or B" means (1) includes at least one A, (2) includes at least one B; Or (3) it may refer to all cases including both at least one A and at least one B.

As used in the present disclosure, expressions such as "first," "second," "first," or "second," may modify various elements, regardless of order and/or importance, and refer to one element. It is used only to distinguish it from other components, and does not limit the components.

A component (eg, a first component) is "coupled with/to (operatively or communicatively)" to another component (eg, a second component) When referring to "connected to", it will be understood that the certain element may be directly connected to the other element or may be connected through another element (eg, a third element).

On the other hand, when it is said that a component (eg, a first component) is "directly connected" or "directly connected" to another component (eg, a second component), the component and the It may be understood that other components (eg, a third component) do not exist between other components.

The expression "configured to (or configured to)" as used in this disclosure depends on the context, for example, "suitable for," "having the capacity to" ," "designed to," "adapted to," "made to," or "capable of." The term “configured (or configured to)” may not necessarily mean only “specifically designed to” in hardware.

Instead, in some circumstances, the expression “a device configured to” may mean that the device is “capable of” with other devices or parts. For example, the phrase “a processor configured (or configured to perform) A, B, and C” refers to a dedicated processor (eg, an embedded processor) for performing the operations, or by executing one or more software programs stored in a memory device. , may mean a generic-purpose processor (eg, a CPU or an application processor) capable of performing corresponding operations.

In an embodiment, a 'module' or 'unit' performs at least one function or operation, and may be implemented as hardware or software, or a combination of hardware and software. In addition, a plurality of 'modules' or a plurality of 'units' may be integrated into at least one module and implemented by at least one processor, except for 'modules' or 'units' that need to be implemented with specific hardware.

Meanwhile, various elements and regions in the drawings are schematically drawn. Accordingly, the technical spirit of the present invention is not limited by the relative size or spacing drawn in the accompanying drawings.

Hereinafter, embodiments according to the present disclosure will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art to which the present disclosure pertains can easily implement them.

1A and 1B are diagrams for explaining the configuration and operation of the display apparatus 100 according to an embodiment of the present disclosure. As shown in FIG. 1A , the display apparatus 100 may display a first image on the first area 10 of the display 110 exposed outside the housing 120 . The first image may be image content received by the display apparatus 100 from an external server or an external device. And, as shown in FIG. 1B , the display apparatus 100 rolls the display 110 using a roller 40 to create a second area 20 of the first area 10 displaying a first image. It can be accommodated in the housing 120 . That is, the second region 20 may be a region that is not exposed outside the housing 120 as the display 110 is rolled and accommodated in the housing 120 among the first regions 10 .

Meanwhile, the display 110 of the display apparatus 100 may be a flexible display that can be bent or folded. In addition, a plurality of support blocks capable of supporting the display 110 may be disposed on the rear surface of the display 110 , and each of the plurality of support blocks may be in the form of a roll through a roller 40 along a rolling axis. can be dried with Accordingly, when the plurality of support blocks are rolled into the housing 120 in the form of a roll along the rolling axis and accommodated, the display 110 may also be received by being rolled into the housing 120 in the form of a roll. The structure of the display 110 and the support block and the process of being rolled through the rollers will be described in detail with reference to FIG. 3A .

Meanwhile, the display apparatus 100 may display a second image for reducing burn-in in the second area 20 accommodated in the housing 120 among the first area 10 . As an embodiment, the second image may be a screen saver for preventing the display 110 from burning fluorescence.

As another example, the second image prevents generation of a boundary line due to the burn-in phenomenon on the boundary area between the area 30 exposed outside the housing 120 and the second area 20 of the first area 10 . It may be a video for Specifically, as for the second image, after the display 110 is rolled, the image displayed on the boundary region among the images displayed on the region 30 exposed to the outside of the housing 120 is the image displayed on the boundary region of the second region 20 from the boundary region. The image may be extended to a partial area. In this case, the second image may be an image whose brightness decreases from the boundary area toward the boundary line of the partial area of the second area 20 . An embodiment related thereto will be described in detail with reference to FIG. 6B .

As another example, the second image may be another image for reducing burn-in or an image created by a user.

When the second image is displayed in the second region 20 , the display apparatus 100 determines the amount of power applied to the light emitting devices belonging to the second region 20 based on the information on the usage amount of the plurality of light emitting devices. can be adjusted Specifically, while the first region 10 is exposed to the outside of the housing 120 to display the first image, the display device 100 acquires information on the amount of light emitting device used in the first region 10 . can do. The information on the usage amount of the light emitting device may be information accumulated by a statistical method on the usage amount of each of the plurality of light emitting devices belonging to the first region 10 .

And, when the second image is displayed in the second region 20 , the display apparatus 100 obtains information on the usage amount of the light emitting device belonging to the second region 20 among the acquired information on the usage amount of the plurality of light emitting devices. Based on , the amount of power applied to the plurality of regions included in the second region 20 may be adjusted. For example, when a portion of the first area 10 is converted to the second area 20 by rolling the display 110 and being accommodated in the housing, the display apparatus 100 provides information on the amount of the light emitting device obtained. Information on the usage amount of the light emitting device belonging to the second region 20 may be identified. In addition, as the amount of the light emitting device belonging to a specific area among the second area 20 identified through the information on the usage amount of the light emitting device belonging to the second area 20 increases, the display apparatus 100 displays the second image. In this case, the amount of power applied to the light emitting device belonging to a specific region may be reduced. In addition, as the amount of the light emitting device belonging to the specific area of the second area 20 is reduced, the display apparatus 100 may increase the amount of power applied to the light emitting device belonging to the specific area when displaying the second image. have. When displaying the second image for reducing the burn-in phenomenon, the display apparatus 100 adjusts the amount of power applied to the light emitting device according to the amount of the light emitting device belonging to the display 110 to reduce the lifespan of the light emitting device. increase and restore visual homogeneity on the display 110 .

In addition, the display apparatus 100 may determine a priority of an area displaying the second image among the second areas 20 . In an embodiment, the electronic device 100 may first display a second image for reducing burn-in in a third region supported by a support block first exposed to the outside of the housing 120 in the second region 20 . have. Specifically, a region of the display 110 that can be exposed to the outside of the housing 120 first may display a second image less time than other regions. That is, the region of the second region 20 that can be exposed to the outside of the housing 120 first may take less time to perform the operation of reducing the burn-in phenomenon compared to other regions. Accordingly, the display apparatus 100 may reduce the burn-in phenomenon by displaying the second image in the third area supported by the support block first exposed to the outside of the housing 120 among the second area 20 compared to other areas. have. Thereafter, the display apparatus 100 may display the second image first in a region that can be exposed to the outside of the housing 120 first among the remaining regions except for the third region among the second regions, compared to other regions.

As another embodiment, the display apparatus 100 may determine the priority of the area displaying the second image among the second area 20 based on the information on the amount of the light emitting device used. Specifically, the display apparatus 100 may obtain information on the amount of usage of the light emitting device belonging to the area corresponding to each of the at least one support block supporting the first area 10 . That is, the display apparatus 100 may divide the area of the display 110 in units of support blocks, and obtain information on the amount of light emitting devices used in the area supported by each support block. And, when the second region 20 of the first region 10 is rolled inside the housing 120 through the roller 40 , the display device 100 displays the second region based on the information on the amount of light emitting device used. The order of displaying the second image for reducing the burn-in phenomenon among regions corresponding to each of the support blocks supporting ( 20 ) may be determined. For example, when the second area of the first area 10 is rolled by the roller 40 and accommodated in the housing 120 , the display apparatus 100 displays the second area of the obtained information on the amount of the light emitting device used. Information on the amount of the light emitting device used in the region supporting the region 20 may be identified. When it is identified based on the identified information that the amount of light emitting device used in the area supported by the specific support block among the support blocks supporting the second region 20 is greater than the amount of light emitting device used in the area supported by the remaining support blocks , the display apparatus 100 may determine to most preferentially display the second image in an area supported by a specific support block. That is, the display apparatus 100 may determine that an area of the display 110 in which the light emitting element is used is first displayed as the second image.

Meanwhile, when the display apparatus 100 displays the second image for reducing the burn-in phenomenon, heat may be generated on the display 110 and the temperature inside the housing 120 may increase. When the temperature inside the housing 120 exceeds the threshold value or more, the operating efficiency of the display 110 accommodated in the housing 120 and various components included in the housing 120 may be reduced, and the physical damage may occur. Accordingly, the display apparatus 100 may minimize the effect of heat generated while displaying the second image on the second region 20 through various embodiments. On the other hand, the embodiment for reducing the temperature inside the housing 120 to be described later is not an individual embodiment, and it goes without saying that each embodiment can be combined and modified.

As an embodiment, the display apparatus 100 may reduce the temperature inside the housing 120 by using a fan capable of circulating the air included in the housing 120 . For example, the display apparatus 100 detects a region with the highest temperature among the interior of the housing 120 , and discharges air inside the housing 120 using a fan corresponding to the region with the highest temperature, and the remaining fans can be used to suck air into the housing 120 . An embodiment in which the display apparatus 100 uses a fan to minimize the effect of heat generated inside the housing 120 when displaying the second image will be described in detail with reference to FIG. 7 .

In another embodiment, at least one of the plurality of support blocks may include at least one support block and a protrusion to form a space between the at least one support block and the area of the display 110 facing each of the support blocks. Therefore, even if heat is generated by the display apparatus 100 displaying the second image on a specific area of the second area 20 , a support block supporting the specific area and the display area facing the support block are spaced apart through a protrusion. Since this is formed, the heating positions may not overlap. An embodiment related to the spacing formed by the protrusion will be described in detail with reference to FIGS. 3A and 3B .

In another embodiment, when the second image is displayed on the fourth area supported by one of the support blocks supporting the second area, the display apparatus 100 may display the display area supported by the support block facing the fourth area. The second image may not be displayed. That is, even if heat is generated by displaying the second image in a specific area of the second area 20 , the display apparatus 100 does not display the second image in the display area supported by the support block facing the specific area. It is possible to avoid overlapping of heat-generating areas. A related embodiment will be described in detail with reference to FIGS. 5A and 5B.

2 is a block diagram illustrating the configuration of the display apparatus 100 according to an embodiment of the present disclosure. As shown in FIG. 2 , the display device 100 includes a display 110 , a housing 120 , a memory 130 , a processor 140 , a sensor 150 , a support block 160 , a communication unit 170 , It may include a speaker 180 , an input unit 190 , and a fan 195 . However, the configuration shown in FIG. 2 is an exemplary diagram for implementing embodiments of the present disclosure, and appropriate hardware and software configurations at a level obvious to those skilled in the art may be additionally included in the electronic device 100 .

The display 110 may display various information according to the control of the processor 140 . In particular, the display 110 may display a second image for reducing the burn-in phenomenon. As another example, the display 110 may display a first image on a region exposed outside the housing 120 of the display 110 and display a second image on a region accommodated inside the housing 120 . .

In addition, the panel of the display 110 may be implemented as a self-luminous display panel such as OLED or AM-OLED (Active-Matrix Organic Light-Emitting Diode). However, this is only an embodiment, and the panel of the display 110 may include a liquid crystal display (LCD), a liquid crystal on silicon (LcoS), a quantum dot light-emitting diode (QLED), and a digital light processing (DLP), such as It can be implemented as a panel. In addition, the display 110 may be implemented as a flexible display that can be bent or folded.

The housing 120 includes a roller for rolling the display 110 , and may house the display 110 rolled through the roller. The roller included in the housing 120 may roll the display 110 in the form of a scroll to expose it to the outside of the housing 120 or accommodate it inside the housing 120 . In addition, the roller may have a polygonal columnar shape or a cylindrical columnar shape including n (in this case, a natural number equal to or greater than 3) side surfaces. Accordingly, the cross-section of the roller may be implemented not only as a circle but also as a polygon.

On the other hand, the housing 120 may be implemented in a hexahedral shape as shown in FIGS. 1A and 1B , but this is only an example and various shapes (eg, cylindrical, etc.) capable of housing the display 110 are provided. can be implemented.

The memory 130 may store commands or data related to at least one other component of the display apparatus 100 . In particular, the memory 130 may be implemented as a non-volatile memory, a volatile memory, a flash-memory, a hard disk drive (HDD), or a solid state drive (SSD). The memory 130 is accessed by the processor 140 , and reading/writing/modification/deletion/update of data by the processor 140 may be performed. In the present disclosure, the term "memory" refers to a memory 130, a ROM (not shown) in the processor 140, a RAM (not shown), or a memory card (not shown) mounted in the electronic device 100 (eg, micro SD). card, memory stick). In addition, programs and data for configuring various screens to be displayed in the display area of the display may be stored in the memory 130 .

The processor 140 may be electrically connected to the memory 130 to control overall operations and functions of the display apparatus 100 . In particular, the processor 140 may control the display 110 to display the first image on the first area exposed outside the housing 120 of the display 110 . And, when the second area of the first area displaying the first image is rolled and accommodated in the housing 120 through the roller, the processor 140 generates a second image for reducing the burn-in phenomenon in the second area. The display 110 may be controlled to display.

On the other hand, when a fixedly displayed element (eg, a channel logo, a subtitle, a user-defined UI, etc.) is included in the first image displayed on the first area of the display 110 , the display 110 is displayed in a fixed manner. A light emitting device belonging to an area in which an element is displayed may have a higher usage amount than a light emitting device belonging to another area. Accordingly, the processor 140 controls the amount of power applied to the light emitting devices belonging to the second area based on the information on the usage amount of the plurality of light emitting devices that are exposed to the outside of the housing 120 and belong to the first area displaying the first image. You can adjust the amount. Specifically, when the second area of the first area is rolled by the roller and accommodated in the housing 120 , the processor 140 is configured to be included in the second area of the obtained information on the amount of light emitting device used. Information on the usage amount of the light emitting device may be identified. When the second image is displayed in the second region, the processor 140 may adjust the amount of power applied to the light emitting device belonging to the second region based on the information on the usage amount of the light emitting device belonging to the second region. For example, the processor 140 may decrease the amount of power to be applied to the light emitting device belonging to the specific region as the amount of the light emitting device belonging to the specific region among the second regions is increased.

Meanwhile, the processor 140 may control the display 110 to first display the second image in the third region supported by the support block first exposed outside the housing 120 among the second regions. A region of the display 110 that is first exposed to the outside of the housing 120 may perform the least reduction operation. Accordingly, the processor 140 first displays the second image on the third region supported by the support block first exposed to the outside of the housing 120 among the second region, thereby evenly reducing the entire region of the display 110 . can do.

In addition, the processor 140 may obtain information on the amount of usage of the light emitting device belonging to the region corresponding to each of the at least one support block supporting the first region. And, when the second area of the first area is rolled inside the housing 140 through the roller, the processor 140 is an area corresponding to each of the support blocks supporting the second area based on the information on the amount of the light emitting device used. The order in which the second image is displayed may be determined. For example, if the amount of the light emitting device used in the region supported by the specific support block among the plurality of support blocks supporting the second region 20 is greater than the amount of the light emitting device used in the region supported by other support blocks, the processor ( 140 may control the display 110 to first display the second image in an area supported by a specific support block.

Also, when the second image is displayed in the fourth region supported by one of the support blocks supporting the second region, the processor 140 may display the second image in the region of the display 110 supported by the support block facing the fourth region. Images may not be displayed. Accordingly, the processor 140 may minimize the effect that heat generated inside the housing 120 may have on the display 110 by preventing the locations of heat generated by displaying the second image from overlapping.

And, while the first image is displayed on the first area, if the second area of the first area is rolled and accommodated in the housing through the roller, the processor 140 displays the second image with the exposed area 30 and The display 110 may be controlled to display from the boundary area between the second areas 20 to a partial area of the second area 20 . In this case, the second image may be an image in which the image displayed on the boundary region among the images displayed on the exposed region 30 is extended from the boundary region to a partial region of the second region. In addition, the second image may be an image whose brightness decreases from the boundary region toward the boundary line of a partial region of the second region.

In addition, the processor 140 may detect a region having the highest temperature within the housing 140 . In addition, the processor 140 may discharge air inside the housing using a fan corresponding to a region having the highest temperature, and may suck air into the housing using the remaining fans. That is, the processor 140 can effectively solve a problem caused by heat generated inside the housing 120 by using the fan.

Meanwhile, the processor 140 includes a central processing unit (CPU), a micro controller unit (MCU), a micro processing unit (MPU), a controller, and an application processor (AP) for processing a digital signal. )), a communication processor (CP), and one or more of an ARM processor, or may be defined by the term. In addition, the processor 140 may be implemented as a system on chip (SoC), large scale integration (LSI), or a field programmable gate array (FPGA) having a built-in processing algorithm. The processor 140 may perform various functions by executing computer executable instructions stored in the memory 130 . In addition, the processor 140 may include at least one of a graphics-processing unit (GPU), a neural processing unit (NPU), and a visual processing unit (VPU), which are separate AI-only processors, in order to perform an artificial intelligence function. have.

The sensor 150 may detect various state information of the display apparatus 100 . For example, the sensor 150 may include a temperature sensor capable of detecting the temperature inside the housing 120 . In addition, the sensor 150 includes a sensor (eg, a global positioning system (GPS) sensor) capable of detecting location information of the display device 100, a sensor capable of detecting environmental information around the display device 100 ( For example, it may include a temperature sensor, a humidity sensor, a barometric pressure sensor, etc.), a sensor capable of detecting the user's presence (eg, a camera, a UWB sensor, an IR sensor, a proximity sensor, an optical sensor, etc.). In addition, the sensor 150 may further include an image sensor for photographing the outside of the display apparatus 100 .

The support block 160 may be disposed on the rear surface of the display 110 to support the display 110 . Each of the support blocks 160 may be rolled into a roll through a roller along a rolling axis. Since the support block 160 is disposed on the rear surface of the display 110 , when the support block 160 is rolled into a roll through a roller, the display 110 may also be rolled at the same time. The support block may be implemented as a magnetic support block or a metal support block, but this is only an example and may be implemented with various materials.

The communication unit 170 includes a circuit and may perform communication connection with an external device in various ways. The communication connection of the communication unit 170 with an external device may include communicating through a third device (eg, a repeater, a hub, an access point, a server, a gateway, etc.).

Meanwhile, the communication unit 170 may include various communication modules to communicate with an external device. For example, the communication unit 170 may include a wireless communication module, for example, LTE, LTE Advance (LTE-A), CDMA (code division multiple access), WCDMA (wideband CDMA), UMTS (universal mobile telecommunications) system), a cellular communication module using at least one of Wireless Broadband (WiBro), or Global System for Mobile Communications (GSM). As another example, the wireless communication module, for example, WiFi (wireless fidelity), Bluetooth, Bluetooth low energy (BLE), Zigbee (Zigbee), near field communication (NFC), magnetic secure transmission (Magnetic Secure Transmission), radio frequency (RF) or a body area network (BAN).

In addition, the communication unit 170 may include a wired communication module, for example, universal serial bus (USB), high definition multimedia interface (HDMI), recommended standard232 (RS-232), power line communication, or POTS (plain). old telephone service) and the like. A network in which wireless communication or wired communication is performed may include at least one of a telecommunication network, for example, a computer network (eg, LAN or WAN), the Internet, or a telephone network.

The speaker 180 is configured to output not only various audio data on which various processing operations such as decoding, amplification, and noise filtering have been performed by the audio processing unit, but also various notification sounds or voice messages. Meanwhile, a configuration for outputting audio may be implemented as the speaker 180 , but this is only an exemplary embodiment and may be implemented as an output terminal capable of outputting audio data.

The input unit 190 may receive a user input for controlling the display apparatus 100 . In particular, the input unit 190 may include a touch panel for receiving a user touch input using a user's hand or a stylus pen, a button for receiving a user manipulation, and the like. The input unit 190 may be implemented as another input device (eg, a keyboard, a mouse, a motion input unit, etc.).

Also, the input unit 190 may be implemented as a remote control for controlling the display apparatus 100 . For example, when a user command to roll the display 110 to the outside or inside the housing 120 is input through the remote control, the remote control includes a signal including the user command (eg, an IR signal or a signal through a Bluetooth module). etc.) to the processor 140 . In addition, the processor 140 may receive a signal received from the remote control through the communication unit 170 .

The fan 195 may perform an operation of sucking air into the housing 120 or discharging it to the outside. When the housing 120 is implemented as shown in FIG. 1A , the fan 195 may be disposed on both sides of the housing 120 , and may be formed in a grill shape to be opened/closed. This is only an example, and the fan 195 may be disposed in various positions of the housing 120 . In addition, the fan 195 may, under the control of the processor 140 , suck air into the housing 120 and discharge the air to the outside of the housing 120 , and vice versa. In addition, the fan 195 may control a speed (or revolutions per minute (RPM)) for sucking or discharging air under the control of the processor.

3A and 3B are diagrams for explaining a protrusion included in a support block on the display apparatus 100 according to an embodiment of the present disclosure.

FIG. 3A is a cross-sectional view of a state in which the display 110 is rolled around a rolling axis by the roller 40 inside the housing 120 . Specifically, as shown in FIG. 3A , inside the housing 120 , the roller 40 and the first support block 300 and the first support block 300 and the first are disposed closest to the roller 40 to support the display 110 area. A second support block 310 supporting the display 110 area facing the support block 300, and a third support block 320 supporting the display 110 area facing the second support block 320, may include And, since each support block is rolled in the form of a roll around the rolling axis, the length of the second support block 310 may be longer than that of the first support block 300, and the third support block 320 is the second support block ( 310) may be longer. And, if the number of support blocks having the same length as the first support block 300 supporting the display area adjacent to the roller 40 is N (where N is a natural number equal to or greater than 3), the second support block 310 and The number of support blocks having the same length as each of the third support blocks 320 may be N+1. In addition, the display 110 may be rolled in the form of a scroll through the roller 40 together with the support block supporting the display 110 to be exposed to the outside or accommodated in the slit 340 of the housing 120 . In addition, a holding member 350 capable of holding the display 110 when the display 110 is rolled may be disposed on the top of the display 110 . However, the cross-sectional view shown in FIG. 3A is only one embodiment, and the roller 40 may be implemented as having a polygonal cross-section as a polygonal pole, and the number of support blocks and support blocks according to the length of the display 110 . may also vary in length.

On the other hand, as shown in Figure 3a, a plurality of support blocks and the display 110 around the rolling axis of the roller 40 are rolled up in a roll shape, and the display 110 accommodated inside the housing 120 in the entire area. When the second image for reducing the burn-in phenomenon is displayed, the heating position in the specific display area and the heating position in the display area supported by the support block facing the specific display area may be adjacent to or overlapped with each other. That is, when a specific display area and a support block facing the specific display area are adjacent to each other or are less than a critical distance, the heating positions overlap and the temperature of the entire housing 120 may rapidly increase, which is the inside of the housing 120 . It may reduce the operational efficiency of components included or accommodated in the display 110 , and may cause a loss in the display 110 .

Accordingly, at least one of the plurality of support blocks may include the at least one support block and the protrusion 330 to form a space between the area of the display 110 facing each of the at least one support block. For example, as shown in FIG. 3A, each of the second support block groups having the same size as the second support block 310 arranges hemispherical protrusions 330 at regular intervals on the rear surface of the second support block ( A space may be formed between the group 310) and the area of the display 110 supported by the third support block group having the same size as the third support block 320 . Meanwhile, the protrusion 330 may be implemented with a soft and ductile material that does not cause marks or damage to the area of the display 110 facing the second support block 310 .

3B is a cross-sectional view for explaining a protrusion attached to the rear surface of the second support block group 360 . Each of the second support block groups 360 may have protrusions 330 - 1 and 330 - 2 at both ends as shown in FIG. 3B .

Meanwhile, in another embodiment, the protrusion may be disposed on the front surface of the display 110 , and the protrusion may be implemented with a transparent material so as not to interfere with the user's viewing of the display 110 . In addition, the protrusion may be located at the center as well as at both ends of the support block. In addition, the protrusion may be implemented in the form of a cone or polygonal pyramid in order to minimize the area in which the support block touches the opposing display 110 area. And, of course, protrusions may be disposed on the rear surfaces of each of the first and third support block groups as well as the second support block group 360 .

FIG. 4 is a diagram for describing a process in which the display apparatus 100 determines an order of displaying a second image for reducing a burn-in phenomenon, according to an embodiment of the present disclosure. The display apparatus 100 may determine the order of displaying the second image among the plurality of regions of the display 110 according to the exposure frequency of the support block supporting the display 110 . Specifically, referring to FIG. 4 , when the display 110 and the support block supporting the display 110 are rolled by a roller and exposed outside the housing 120 , the support block 400 first exposed outside the housing 120 . ) supported by the second image for reducing the burn-in phenomenon may be displayed the least compared to other regions. That is, in the case of the area of the display 110 supported by the support block 400 closest to the outside of the housing 120 , the frequency of exposure to the outside of the housing 120 may be higher than that of other areas of the display 110 . Accordingly, since a reduction operation is performed less in the area supported by the support block having a high exposure frequency than in the area supported by other support blocks, the area may be vulnerable to burn-in. Accordingly, the display apparatus 100 may first display the second image in the third area supported by the support block 400 that is first exposed to the outside of the housing 120 among the second areas.

For example, after the first image is displayed on the first area exposed outside the housing 120 , when the first area is rolled and accommodated in the housing 120 through the roller 40 , the display device 100 may display the housing The burn-in phenomenon may be reduced by first displaying the second image in an area supported by the support block 400 exposed to the outside first. Thereafter, the display apparatus 100 may reduce the burn-in phenomenon by displaying the second image on a region supported by the support block 410 , which is first exposed to the outside of the housing 120 after the support block 400 .

On the other hand, as another embodiment of the present disclosure, the display device 100 receives information on the amount of light emitting device used in the region corresponding to each of the at least one support block supporting the first region exposed outside the housing 120 . can be obtained That is, the display apparatus 100 divides the first area exposed outside the housing 120 of the display 110 into support blocks supporting the first area, and determines the amount of light emitting device used in the area supported by each support block. information can be obtained. For example, referring to FIG. 4 , when the area exposed to the outside of the housing 120 is the area supported by the three

support blocks

400 , 410 , and 420 , the display device 100 includes the three

support blocks

400 , 410 and 420 , respectively. The usage amount of the light emitting element belonging to this supporting region can be obtained individually. In addition, when all three

support blocks

400 , 410 , and 420 are accommodated in the housing 120 , and the light emitting device usage in the region supported by the specific support block 410 is the largest, the display device 100 displays the specific support block 410 . ) may be determined by first displaying the second image for reducing burn-in in the region supported by the . Thereafter, the display apparatus 100 may display the second image in an area where the next light emitting element usage is large, or may simultaneously display the second image in an area supported by the support blocks 400 and 420 that are spaced apart from each other. However, this is an embodiment of the present disclosure, and the display apparatus 100 may determine the order of the area displaying the second image for reducing the burn-in phenomenon among the display 110 according to a user command.

5A and 5B are diagrams for explaining a process in which the display apparatus 100 displays an image for reducing a burn-in phenomenon, according to an embodiment of the present disclosure. As described above, when the specific display area and the area supported by the support block facing the specific display area simultaneously display the second image to reduce the burn-in phenomenon, heat is generated and the inside of the housing 120 is overlapped. As the temperature of the display 110 increases, the performance may deteriorate or the external panel may be damaged or deformed. Accordingly, when the second image is displayed in the fourth region supported by one of the support blocks supporting the second region, the display apparatus 100 displays the second image in the region of the display 110 supported by the support block facing the fourth region. 2 Video may not be displayed.

For example, in FIG. 5A, the entire display 110 and the support block supporting the display 110 are both rolled out of the housing 120 by the roller 40 to display the first image, and then the display 110 again. It is a block diagram illustrating a process in which the entire area of the , and the support block supporting the same are accommodated in the housing 120 . As shown in FIG. 5A , the display apparatus 100 displays the second image in a specific area supported by one of the blocks 500 - 2 supporting the area of the display 110 accommodated in the housing 120 , The display apparatus 100 may not display the second image in the area of the display 110 supported by the support block facing the specific area. That is, as shown in FIG. 5A , the region supported by the specific support blocks 500-1, 500-2, 500-3, 500-4, 500-5, 500-6, 500-7, and 500-8. When the second image is displayed on , the display apparatus 100 may not display the second image on the area of the display 110 supported by the support block facing the specific support block. Then, after a threshold time, as shown in FIG. 5B , the display apparatus 100 displays the second image on the area of the display 110 supported by the support block facing the specific support block, and the area supported by the specific support block. may not display the second image. Accordingly, the display apparatus 100 can avoid overlapping positions in which heat is generated by dispersing regions in which the reduction operation is performed.

However, the drawings shown in FIGS. 5A and 5B are only an exemplary embodiment, and when the second image is displayed in an area supported by at least one support block, the display apparatus 100 displays the at least one support block facing each other. The second image may not be displayed in a region supported by the support blocks in all directions. That is, referring to FIG. 5A , when the second image is displayed in the area supported by the support block No. 500-2, the display apparatus 100 displays the display device No. 500-7, which is one of the support blocks in the direction opposite No. 500-2. The second image may not be displayed even in an area supported by the support block. Then, after the threshold time, the display apparatus 100 displays the second image in one of the regions supported by the support blocks 500-7 or between 500-2 and 500-7, and displays the second image supported by 500-2. The second image may not be displayed in the area. Accordingly, the display apparatus 100 can effectively lower the temperature inside the housing 120 .

Meanwhile, the display apparatus 100 may change a method of displaying the second image according to the internal temperature of the housing 120 . When it is identified that the temperature inside the housing 120 exceeds the first threshold, the display device 100 displays the second image only for the region in which the amount of light emitting element is the largest, or at least one in which the second image is displayed. The second image may not be displayed in an area supported by the support blocks in all directions facing the support blocks of . In addition, when the temperature inside the housing 120 exceeds the second threshold value below the first threshold value, the display apparatus 100 may operate as described with reference to FIGS. 5A and 5B . In addition, when the temperature inside the housing 120 is equal to or less than the second threshold, the display apparatus 100 may display the second image on all display areas inside the housing 120 .

On the other hand, as an embodiment of the present disclosure, referring to FIG. 5A , the display apparatus 100 may display a second image first in an area supported by a support block exposed first to the outside of the housing 120 among the second areas. can And, at the same time or within a threshold error range, the display apparatus 100 does not display the second image on the specific support block facing the region supported by the support block, but does not display the second image on the region supported by the left and right support blocks of the specific support block. A second image may be displayed. That is, the display apparatus 100 displays the second image on a specific area supported by the support block exposed first to the outside of the housing 120 and at the same time displays the second image on the area supported by the support block facing the specific area. may not be

6A and 6B are diagrams for explaining a process in which the display apparatus 100 displays an image for reducing burn-in according to an embodiment of the present disclosure, and the display apparatus 100 is viewed from the front. look. As shown in FIG. 6A , the display apparatus 100 may display the first image on the first area 10 exposed outside the housing 120 . And, referring to FIG. 6B , when the second area 20 among the first areas displaying the first image through the roller is rolled and accommodated in the housing 120 , the display device 100 displays the first area ( In 10), a part of the first image may be displayed on the remaining area except for the second area 20 .

On the other hand, when the images displayed on each of the second region 20 and the regions other than the second region 20 of the first region are different from each other, burn-in is performed in the boundary region between the first region and the second region 20 . A boundary line may occur depending on the phenomenon. The boundary line on the display 110 may visually highlight the burn-in effect generated on the display 110 . At this time, when an image displayed in a region other than the second region 20 of the first region is expanded and displayed in the second region 20 , a boundary line is formed in the boundary region between the first region and the second region 20 . can prevent this from happening.

Specifically, as shown in FIG. 6B , when the display 110 is rolled and the second region 20 of the first region 10 is accommodated in the housing 120 , the display device 100 may display a second An image may be displayed from the boundary area to a portion 50 of the second area. In this case, the second image may be an image in which an image of the boundary region is extended from the boundary region to a partial region of the second region among images displayed on an area exposed outside the housing 120 . In addition, the second image may be an image whose brightness decreases from the boundary region toward the boundary line of the partial region 50 of the second region. That is, the display apparatus 100 applies a gradation effect to an image displayed in the boundary region among the images exposed to the outside of the housing 120 , and converts the image to which the gradation effect is applied from the boundary region to the second region 20 . It can be displayed by extending it to some area.

7 is a view for explaining a process in which the display apparatus 100 circulates air inside the housing 120 using a fan, according to an embodiment of the present disclosure. 7 shows an embodiment in which the housing 120 is implemented in a hexahedral shape and the

fans

710 and 720 are disposed at both ends of the housing 120, but this is only an embodiment and the size, shape and fan of the housing 120 The type and location may be variously changed.

As shown in FIG. 7 , according to an embodiment, the display apparatus 100 may circulate air inside the housing 120 by disposing fans at both ends of the housing 120 . When the burn-in phenomenon reduction operation is performed while the second image is displayed on the display accommodated in the housing 120 , heat may be generated on the display. Accordingly, the display apparatus 100 may use a fan to circulate air inside the housing 120 to maintain a constant temperature inside the housing 120 . Then, the display apparatus 100 determines whether to discharge the air inside the housing 120 to the outside or suck the air outside the housing 120 to the inside using a fan based on the temperature inside the housing 120 . can

As an embodiment, the display apparatus 100 may detect the region 730 having the highest temperature inside the housing 120 through a temperature sensor or the like. In addition, the display apparatus 100 may identify the fan 710 close to the region 730 having the highest temperature among the fans inside the housing 120 . Then, the display apparatus 100 discharges the air inside the housing 120 using the identified fan 710 , and uses the fan 720 excluding the identified fan 710 to introduce air into the housing 120 . can be inhaled.

And, as another embodiment, when it is sensed that the temperature outside the housing 120 is higher than the temperature inside, the display device 100 displays all the

fans

710 and 720 included in the housing 120 inside the housing 120 . of air can be expelled.

8 is a flowchart illustrating a method of controlling the display apparatus 100 according to an embodiment of the present disclosure. First, the display apparatus 100 may display a first image on a first area of the display 110 exposed outside the housing 120 ( S810 ). And, when the second area among the first areas displaying the first image through the roller is rolled and accommodated in the housing 120 , the display apparatus 100 displays the second image for reducing the burn-in phenomenon in the second area. may be displayed (S820).

Specifically, the display apparatus 100 may display a screen saver image in the second area. As another example, the display apparatus 100 may display an image in which the amount of power applied to an area in which a news logo and movie subtitles are displayed among the second area. As another example, the display apparatus 100 may display the image displayed on the boundary area between the first area and the second area by applying a gradation effect from the boundary area to a partial area of the second area.

As another example, the display apparatus 100 may obtain information on usage of a plurality of light emitting devices belonging to the first area. In addition, when displaying the second image in the second area, the display apparatus 100 may adjust the amount of power applied to the light emitting device belonging to the second area based on the information on the usage amount of the plurality of light emitting devices. For example, when it is identified that the usage of a specific device among the light emitting devices belonging to the second region is high through information on the usage of the light emitting device, the display apparatus 100 applies a small amount of power to the specific device compared to other devices. can do.

Meanwhile, the description has been made based on the display device 100 in which the display is rolled in the form of a scroll through a roller in the housing. However, according to another embodiment of the present disclosure, the display 110 of the display apparatus 100 may be accommodated in the housing or exposed to the outside in another manner without being rolled by a roller. Accordingly, the first area of the display 110 is exposed to the outside of the housing 120 in various ways (eg, a method using a connection member capable of accommodating the display 110 as a housing, etc.) to display the first image. When the second area of the first area is accommodated inside the housing 120 , the display apparatus 100 may display a second image capable of reducing burn-in on the second area.

And, according to another embodiment of the present disclosure, the display apparatus 100 may operate in a full exposure mode, a partial exposure mode, and a complete non-exposure mode, and may differently reduce burn-in according to each operation mode. 2 Images can be displayed. The full exposure mode is a mode in which the entire area of the display 110 is exposed outside the housing, the partial exposure mode is a mode in which a partial area of the display 110 is exposed outside the housing, and the complete non-exposure mode is the display 110 ) is the mode in which the entire area is accommodated in the housing.

As an embodiment, when operating in the full exposure mode, the display apparatus 100 may obtain information on the amount of light emitting devices used in the entire area of the display 110 . In addition, the display apparatus 100 divides the area of the display 110 in units of support blocks supporting the display 110, and obtains information on the amount of light emitting devices used in the area supported by each divided support block. can

And, when operating in the partial exposure mode, the display apparatus 100 may display the second image on the second area of the display 110 that is exposed to the outside of the housing 120 and accommodated therein. When displaying the second image in the second area, the display apparatus 100 may adjust the amount of power to be applied to the second area based on information on the amount of light emitting device used. As another example, the display apparatus 100 may determine an area to preferentially display the second image among the second areas based on the exposure frequency of each of the plurality of support blocks supporting the second area.

And, when operating in the full exposure mode, the display apparatus 100 may determine the order of displaying the second image according to the exposure frequency among the support blocks supporting the display 110 . For example, the display apparatus 100 may preferentially display the second image in an area supported by the support block most exposed to the outside of the housing 120 among the support blocks. Also, the display apparatus 100 may identify a support block supporting an area in which the light emitting device is used the most among the plurality of support blocks, and display the second area first in the area supported by the identified support block.

As described above, each of the components (eg, a module or a program) according to various embodiments of the present disclosure may be composed of a singular or a plurality of entities, and some of the above-described corresponding sub-components are omitted. Alternatively, other sub-components may be further included in various embodiments. Alternatively or additionally, some components (eg, a module or a program) may be integrated into a single entity to perform the same or similar functions performed by each corresponding component prior to integration.

According to various embodiments, operations performed by a module, program, or other component may be sequentially, parallel, repetitively or heuristically executed, or at least some operations may be executed in a different order, omitted, or other operations may be added. can

On the other hand, the term "unit" or "module" used in the present disclosure includes a unit composed of hardware, software, or firmware, and may be used interchangeably with terms such as, for example, logic, logic block, part, or circuit. can A “unit” or “module” may be an integrally constituted part or a minimum unit or a part thereof that performs one or more functions. For example, the module may be configured as an application-specific integrated circuit (ASIC).

Various embodiments of the present disclosure may be implemented as software including instructions stored in a machine-readable storage medium readable by a machine (eg, a computer). The device calls the stored instructions from the storage medium. and, as a device capable of operating according to the called command, the display device (eg, the display device 100) according to the disclosed embodiments may be included.

When the instruction is executed by the processor, the processor may perform a function corresponding to the instruction by using other components directly or under the control of the processor. Instructions may include code generated or executed by a compiler or interpreter.

The device-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-transitory storage medium' is a tangible device and only means that it does not contain a signal (eg, electromagnetic wave). It does not distinguish the case where it is stored as For example, the 'non-transitory storage medium' may include a buffer in which data is temporarily stored.

According to one embodiment, the method according to various embodiments disclosed in this document may be provided as included in a computer program product. Computer program products may be traded between sellers and buyers as commodities. The computer program product is distributed in the form of a machine-readable storage medium (eg compact disc read only memory (CD-ROM)), or via an application store (eg Play Store™) or on two user devices ( It can be distributed (eg downloaded or uploaded) directly, online between smartphones (eg: smartphones). In the case of online distribution, at least a portion of a computer program product (eg, a downloadable app) is stored at least in a machine-readable storage medium, such as a memory of a manufacturer's server, a server of an application store, or a relay server. It may be temporarily stored or temporarily created.

In the above, preferred embodiments of the present disclosure have been illustrated and described, but the present disclosure is not limited to the specific exemplary embodiments described above, and it is common in the technical field to which the disclosure pertains without departing from the gist of the present disclosure as claimed in the claims. Of course, various modifications may be made by those having the knowledge of

Claims

In the display device,

display;

a housing comprising a roller for rolling the display, the housing housing the display rolled through the roller;

Memory; and

controlling the display to display a first image on a first area exposed outside the housing among the displays;

When a second area of the first area displaying the first image is rolled and accommodated in the housing through the roller, a second image is displayed in the second area to reduce a burn-in phenomenon A display device comprising a; a processor for controlling the display to do so.
According to claim 1,

A plurality of supporting blocks disposed on the rear surface of the display to support the display; further comprising,

Each of the plurality of support blocks is a display device, characterized in that it is rolled in the form of a roll through the roller along a rolling axis.
3. The method of claim 2,

At least one of the plurality of support blocks,

and a protrusion to form a space between the at least one support block and a display area facing each of the at least one support block.
3. The method of claim 2,

The processor is

and controlling the display to first display the second image in a third area supported by a support block first exposed outside the housing among the second area.
3. The method of claim 2,

The processor is

Obtaining information on the usage amount of the light emitting device belonging to the region corresponding to each of the at least one support block supporting the first region,

When the second area of the first area is rolled inside the housing through the roller, the second area of the area corresponding to each of the support blocks supporting the second area based on the information on the amount of the light emitting device used A display device that determines the order in which images are displayed.
3. The method of claim 2,

The processor is

When the second image is displayed on a fourth region supported by one of the support blocks supporting the second region, the display does not display the second image on a display region supported by the support block facing the fourth region Device.
According to claim 1,

The processor is

When the second area of the first area displaying the first image is rolled and accommodated in the housing through the roller while the first image is displayed, the remaining area of the first area except for the second area Control the display to display a part of the first image on

controlling the display to display the second image from a boundary area between an area exposed outside the housing and the second area among the first area to a partial area of the second area;

The second image is an image in which an image of the boundary region among a portion of the first image is extended from the boundary region to a partial region of the second region.
8. The method of claim 7,

The second image is

The display apparatus according to claim 1, wherein the image is an image whose brightness decreases from the boundary area toward the boundary line of the partial area of the second area.
According to claim 1,

The housing further includes at least one fan for circulating air inside the housing,

The processor is

detecting an area with the highest temperature among the inside of the housing;

A display apparatus for discharging air inside the housing using a fan corresponding to a region having the highest temperature among the at least one fan, and sucking air into the housing using the remaining fans.
According to claim 1,

The processor is

Obtaining information on the usage amount of a plurality of light emitting devices belonging to the first area,

When displaying the second image in the second area, the display apparatus controls the amount of power applied to the light emitting device belonging to the second area based on the information on the usage amount of the plurality of light emitting devices.
A method of controlling a display device comprising a roller for rolling a display, the housing housing the display rolled through the roller, the method comprising:

displaying a first image on a first area of the display exposed outside the housing; and

When a second area of the first area displaying the first image is rolled and accommodated in the housing through the roller, displaying a second image for reducing burn-in on the second area; includes; control method.
12. The method of claim 11,

A plurality of supporting blocks disposed on the rear surface of the display to support the display; further comprising,

Each of the plurality of support blocks is rolled in the form of a roll through the roller along a rolling axis.
13. The method of claim 12,

At least one of the plurality of support blocks,

and a protrusion to form a space between the at least one support block and a display area facing each of the at least one support block.
13. The method of claim 12,

Displaying the second image comprises:

and displaying the second image first on a third region supported by a support block first exposed outside the housing among the second region.
13. The method of claim 12,

Displaying the second image comprises:

obtaining information on usage of light emitting devices belonging to an area corresponding to each of the at least one support block supporting the first area; and

When the second area of the first area is rolled inside the housing through the roller, the second area of the area corresponding to each of the support blocks supporting the second area based on the information on the amount of the light emitting device used A control method comprising a; determining the order in which the images are displayed.