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CN111833791A - Gamma debugging method and gamma debugging device - Google Patents

Gamma debugging method and gamma debugging device Download PDF

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Publication number
CN111833791A
CN111833791A CN202010290530.XA CN202010290530A CN111833791A CN 111833791 A CN111833791 A CN 111833791A CN 202010290530 A CN202010290530 A CN 202010290530A CN 111833791 A CN111833791 A CN 111833791A
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China
Prior art keywords
display area
brightness value
display
area
gray scale
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CN202010290530.XA
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Chinese (zh)
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CN111833791B (en
Inventor
王玉青
陈心全
张小宝
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Kunshan Govisionox Optoelectronics Co Ltd
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Kunshan Govisionox Optoelectronics Co Ltd
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/10—Intensity circuits
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
    • G09G2320/0276—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Controls And Circuits For Display Device (AREA)

Abstract

The invention discloses a gamma debugging method and a gamma debugging device. The display panel is provided with a first display area and a second display area, the light transmittance of the first display area is greater than that of the second display area, the second display area comprises at least one first area, and the first area and the first display area are separated by a preset distance, and the method comprises the following steps: acquiring a current brightness value of at least one first area under a first gray scale; determining a first target brightness value of the first display area under the first gray scale based on the current brightness value; and carrying out gamma debugging on the first display area according to the first target brightness value. According to the embodiment of the invention, the brightness consistency of the display panel can be improved.

Description

Gamma debugging method and gamma debugging device
Technical Field
The invention relates to the field of display, in particular to a gamma debugging method and a gamma debugging device.
Background
With the rapid development of electronic devices, the requirements of users on screen occupation ratio are higher and higher, so that the comprehensive screen display of the electronic devices is concerned more and more in the industry.
The design of the camera under the screen appears at present, and the camera under the screen is located below the display screen and does not influence the display function of the display screen. When the user does not use the camera, the display screen above the camera normally displays images, and when the user uses the camera, the display screen above the camera does not display images.
However, the current display screen still has the problem that the brightness is inconsistent when the position where the camera is arranged and the position where the camera is not arranged are displayed.
Disclosure of Invention
The embodiment of the invention provides a gamma debugging method and a gamma debugging device, which can improve the brightness consistency of a display panel.
In a first aspect, an embodiment of the present invention provides a gamma debugging method for a display panel, where the display panel has a first display area and a second display area, a light transmittance of the first display area is greater than a light transmittance of the second display area, the second display area includes at least one first area, and the first area and the first display area are separated by a preset distance, the method includes:
acquiring a current brightness value of at least one first area under a first gray scale;
determining a first target brightness value of the first display area under the first gray scale based on the current brightness value;
and carrying out gamma debugging on the first display area according to the first target brightness value.
In a possible implementation manner of the first aspect, determining a first target luminance value of the first display area at the first gray scale based on the current luminance value includes:
and taking the current brightness value of a first area as a first target brightness value of the first display area at the first gray scale.
In a possible implementation manner of the first aspect, the driving circuit of the display panel is located in the non-display area of the display panel and located on any side of the first display area in the second direction, and the first area is located on any side of the first display area in the first direction, where the second direction intersects with the first direction.
In a possible implementation manner of the first aspect, the determining, based on the current luminance value, a first target luminance value of the first display area at the first gray scale includes:
calculating the current average brightness value of more than two first areas according to the current brightness value of each first area;
and taking the current average brightness value as a first target brightness value of the first display area under the first gray scale.
In a possible implementation manner of the first aspect, the second display area further includes a second area at least partially surrounding the first area, and before acquiring a current luminance value of at least one of the first areas at the first gray level, the method further includes:
and controlling the second area to display in full black, and controlling the other areas except the second area in the first display area and the second display area to display normally.
In a possible implementation manner of the first aspect, the method further includes:
determining a second target brightness value of the second display area under the first gray scale according to the target requirement,
and performing gamma debugging on the second display area according to the second target brightness value to enable the difference value between the actual brightness value of the second display area and the second target brightness value to be within a first preset range.
In a possible implementation manner of the first aspect, the method further includes:
and performing voltage drop compensation on the second display area to enable the difference value between the brightness value of the first area under the first gray scale and the average brightness value of the second display area under the first gray scale to be within a second preset range.
In a possible implementation manner of the first aspect, performing gamma debugging on the first display area according to the first target brightness value includes:
calculating a first target brightness value of the first display area under other gray scales based on a first target brightness value of the first display area under the first gray scale and a preset gamma value;
and performing gamma debugging on the first display area according to the first target brightness value of the first display area under the first gray scale and the first target brightness values of the first display area under other gray scales.
In a possible implementation manner of the first aspect, the shape and size of the first area are the same as those of the first display area.
In a second aspect, an embodiment of the present invention provides a gamma debugging device for a display panel, where the display panel has a first display area and a second display area, a light transmittance of the first display area is greater than a light transmittance of the second display area, the second display area includes at least one first area, and the first area and the first display area are separated by a preset distance; the device comprises:
the data acquisition module is used for acquiring the current brightness value of at least one first area under the first gray scale;
the first target brightness determining module is used for determining a first target brightness value of the first display area under the first gray scale based on the current brightness value;
and the first debugging module is used for carrying out gamma debugging on the first display area according to the first target brightness value.
According to the gamma debugging method and the gamma debugging device provided by the embodiment of the invention, the current brightness value of a first area around at least one first display area under a first gray scale is obtained; then, based on the current brightness value, determining a first target brightness value of the first display area under the first gray scale; and carrying out gamma debugging on the first display area according to the first target brightness value. According to the embodiment of the invention, the actually required adjustment brightness of the first display area is determined based on the current brightness value of the first area around the first display area, so that the actual display brightness of the first display area and the actual display brightness of the second display area tend to be consistent, the brightness consistency of the display panel is improved, and the user experience is improved.
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Other features, objects and advantages of the invention will become apparent from the following detailed description of non-limiting embodiments thereof, when read in conjunction with the accompanying drawings, in which like reference characters designate the same or similar parts throughout the figures thereof, and which are not to scale.
FIG. 1 is a flow chart of a gamma debugging method according to an embodiment of the invention;
fig. 2 is a schematic diagram illustrating a top view structure of an exemplary display panel;
fig. 3 is a schematic diagram illustrating a top view structure of another exemplary display panel;
fig. 4 is a schematic diagram illustrating a top view structure of a display panel according to still another example;
fig. 5 is a schematic structural diagram of a gamma debugging apparatus according to an embodiment of the present invention.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
It will be understood that when a layer, region or layer is referred to as being "on" or "over" another layer, region or layer in describing the structure of the component, it can be directly on the other layer, region or layer or intervening layers or regions may also be present. Also, if the component is turned over, one layer or region may be "under" or "beneath" another layer or region.
On electronic devices such as mobile phones and tablet computers, it is necessary to integrate a photosensitive component such as a front camera, an infrared light sensor, a proximity light sensor, and the like on the side where the display panel is provided. In some embodiments, a transparent display area may be disposed on the electronic device, and the photosensitive component is disposed on the back of the transparent display area, so that full-screen display of the electronic device is achieved under the condition that the photosensitive component is ensured to work normally.
The applicant finds that if gamma debugging is performed on the light-transmitting display area and the main display area based on the same target brightness value, due to the fact that the voltage drops of different areas of the display panel are different, the problem that brightness of the light-transmitting display area and the main display area of the display panel is inconsistent after the gamma debugging is completed still exists, and therefore an obvious boundary line exists between the light-transmitting display area and the main display area.
In order to solve the above problems, embodiments of the present invention provide a gamma debugging method and a gamma debugging apparatus, and embodiments of the gamma debugging method and the gamma debugging apparatus will be described below with reference to the accompanying drawings.
An embodiment of the present invention provides a gamma adjustment method for a display panel, where the display panel may be an Organic Light Emitting Diode (OLED) display panel.
Fig. 1 is a flowchart illustrating a gamma debugging method according to an embodiment of the invention. Fig. 2 illustrates a schematic top view of a display panel provided according to an embodiment of the present invention.
As shown in fig. 1, a gamma debugging method provided by an embodiment of the present invention may include the following steps:
step 110, obtaining a current brightness value of at least one first area under a first gray scale;
step 120, determining a first target brightness value of the first display area under the first gray scale based on the current brightness value;
step 130, performing gamma debugging on the first display area according to the first target brightness value.
According to the gamma debugging device provided by the embodiment of the invention, the current brightness value of the first area around at least one first display area under the first gray scale is obtained; then, based on the current brightness value, determining a first target brightness value of the first display area under the first gray scale; and carrying out gamma debugging on the first display area according to the first target brightness value. According to the embodiment of the invention, the actually required adjustment brightness of the first display area is determined based on the current brightness value of the first area around the first display area, so that the actual display brightness of the first display area and the actual display brightness of the second display area tend to be consistent, the brightness consistency of the display panel is improved, and the user experience is improved.
The gamma debugging method provided by the embodiment of the invention can be used for the display panel shown in FIG. 2. As shown in fig. 2, the display panel 100 has a first display area AA1, a second display area AA2, and a non-display area NA surrounding the first display area AA1 and the second display area AA2, and the light transmittance of the first display area AA1 is greater than that of the second display area AA 2.
Herein, the light transmittance of the first display area AA1 may be 15% or more. To ensure that the light transmittance of the first display area AA1 is greater than 15%, even greater than 40%, or even higher, the light transmittance of at least part of the functional film layer of the display panel in this embodiment may be greater than 80%, or even greater than 90%.
According to the display panel 100 of the embodiment of the invention, the light transmittance of the first display area AA1 is greater than that of the second display area AA2, so that the display panel 100 can integrate a photosensitive component on the back of the first display area AA1, and realize the under-screen integration of the photosensitive component such as a camera, and meanwhile, the first display area AA1 can display a picture, so that the display area of the display panel 100 is increased, and the full-screen design of the display device is realized.
The second display area AA2 includes at least one first region Q1, and the first region Q1 is spaced a predetermined distance from the first display area AA 1. In an exemplary manner, the first and second electrodes are,at least one first region Q1 is located around the first display area AA1 and is maintained at a sufficient adjacent distance from the first region Q1. Illustratively, the distance between the center point of the first area Q1 and the center point of the first display area AA1 may be Dmm — (P)x2-J) mm. Where D denotes a length dimension of the first display area AA1 in the second direction Y, or a length dimension of the first display area AA1 in the first direction X; pxA length dimension in the first direction X of the display area of the display panel 100; the brightness value of the first region Q1 may be obtained by using an optical measurement device, which may be a color analyzer, a light shielding structure is disposed on the periphery of a lens of the color analyzer, and J denotes the radius of the light shielding structure. For example, the first region Q1 is located on both sides or any side of the first display area AA1 in the second direction Y, and the distance between the center point of the first region Q1 and the center point of the first display area AA1 may be the length dimension of the first display area AA1 in the second direction Y; alternatively, the first region Q1 is located on both sides or any side of the first display area AA1 in the first direction X, and the first region Q1 may be spaced apart from the first display area AA1 by a length dimension of the first display area AA1 in the first direction X; wherein the second direction Y intersects the first direction X. The second direction Y may be perpendicular to the first direction X. Therefore, the brightness interference of the first display area AA1 when the current brightness value of the first area Q1 under the first gray scale is acquired can be effectively avoided, so that the brightness value of the first area Q1 can be acquired more accurately, and meanwhile, the first area Q1 and the first display area AA1 are ensured to be sufficiently adjacent, so that the acquired target brightness value required by gamma debugging of the first display area AA1 is more reasonable, and the brightness consistency of the first display area AA1 and the second display area AA2 is further improved.
In step 110, the first gray level may be any gray level. Illustratively, the first gray level may be 255 gray levels. I.e. the current luminance value of the at least one first region Q1 in white. The brightness of the first region Q1 may be measured using an optical measuring device, such as color analyzer CA310, or color analyzer CA 410. During the measurement process, the lens center point of the optical measurement apparatus may be aligned with the center point of the first region Q1, so as to more accurately acquire the brightness value of the first region Q1.
In some alternative embodiments, the number of the first regions Q1 may be one. Step 120 may specifically include: the current brightness value of a first area Q1 is used as the first target brightness value of the first display area AA1 at the first gray scale.
The first region Q1 has a sufficient adjacent distance from the first display area AA1, for example, the first region Q1 is located at any side of the first display area AA1 in the first direction X, and a center point of the first region Q1 may be spaced apart from a center point of the first display area AA1 by a length dimension of the first display area AA1 in the first direction X. The first area Q1 is closer to the first display area AA1, and at this time, the obtained current luminance value of the first area Q1 can be directly used as the first target luminance value of the first display area AA1 at the first gray scale, so that a distinct boundary between the first display area AA1 and the second display area AA2 can be avoided. Therefore, the first target brightness value corresponding to the first display area AA1 can be accurately determined only by acquiring the brightness value of one first area Q1, and the method is simple and convenient and can improve the efficiency.
In some alternative embodiments, with reference to fig. 2, the driving circuit 10 of the display panel 100 is located in the non-display area NA of the display panel 100 and located at any side of the first display area AA1 in the second direction Y, the number of the first areas Q1 is one, and the first areas Q1 are located at any side of the first display area AA1 in the first direction X. The driving circuit 10 may be electrically connected to signal lines (not shown) of the display panel 100, and emit light signals for the sub-pixels of the display panel 100 through the signal lines, so that the display panel 100 displays a predetermined image.
For example, the signal lines may extend along the second direction Y, and the plurality of signal lines may be spaced apart in the first direction X. The voltage drop (IR drop) on the signal line is gradually increasing in a direction away from the driver circuit 10. The first region Q1 is located at any side of the first display area AA1 in the first direction X, so that the voltage drops of the signal lines in the first region Q1 and the first display area AA1 are equal, and therefore, the first region Q1 better conforms to the actual situation of the first display area AA1, and the first target brightness value of the first display area AA1 determined according to the current brightness value of the first region Q1 is more accurate. Alternatively, the vertical distances from the driving circuit 10 to the first region Q1 and the first display area AA1 may be equal. Specifically, the vertical distance between the edge of the first region Q1 close to the driving circuit 10 and the edge of the first display area AA1 close to the driving circuit 10 and the driving circuit 10 may be equal. Illustratively, the signal line may be a power line (Vdd), a data line, or the like.
Fig. 3 is a schematic diagram illustrating a top view structure of another exemplary display panel. Fig. 4 is a schematic top view of a display panel according to still another example. The number of the first regions may be plural. As shown in fig. 3, the number of the first regions is two, and the first regions Q11 and Q12 are the first regions Q11 and Q12. As shown in fig. 4, the number of the first regions is four, and the first regions Q11, Q12, Q13, and Q14 are the first regions. Fig. 3 and 4 are merely examples, and the number of the first regions may be other values.
Alternatively, the number of optical metrology devices may be equal to the number of first zones. One optical measurement device corresponds to one first area, so that the brightness values of a plurality of first areas are prevented from being measured by only one optical measurement device moving back and forth, the efficiency is improved, the center point of the lens of each optical measurement device can be aligned with the center point of each first area more accurately, and the current brightness value of each first area is acquired more accurately.
When the number of the first areas is two or more, the two or more first areas are distributed around the first display area AA 1. I.e., the first areas are all located around the first display area AA 1. As shown in fig. 3, when the number of the first areas is two, the first areas Q11, Q12 may be respectively located at both sides of the first display area AA1 in the first direction X. As shown in fig. 4, when the number of the first regions is four, the first regions Q11, Q12 may be respectively located at both sides of the first display area AA1 in the first direction X, and the first regions Q13, Q14 may be located at one side of the first display area AA1 in the second direction Y.
Correspondingly, step 120 may include: calculating the current average brightness value of more than two first areas according to the current brightness value of each first area; and taking the current average brightness value as a first target brightness value of the first display area under the first gray scale.
Illustratively, a current brightness value LV of the first region Q11 as shown in fig. 3 may be calculated1And the current brightness value LV of the first region Q122The current average luminance value. Alternatively, the current brightness value LV of the first region Q11 as shown in fig. 3 may be calculated1Current brightness value LV of first region Q122Current brightness value LV of first region Q133Current brightness value LV of first region Q144The calculated current average brightness value is used as a first target brightness value required for gamma adjustment of the first display area AA 1. Therefore, based on the current brightness values of the plurality of first areas Q11 around the first display area AA1, the first target brightness value required by gamma debugging of the first display area AA1 can be more accurately determined, the consistency of the display brightness of the first display area AA1 and the display brightness of the second display area AA2 is further improved, an obvious boundary between the first display area AA1 and the second display area AA2 is avoided, and user experience is improved.
In some optional embodiments, as shown in fig. 2 to fig. 4, the second display area AA2 may further include a second area Q2 at least partially surrounding the first area Q1, and before step 110, the gamma debugging method provided in the embodiment of the present invention may further include: the second area Q2 is controlled to display in full black, and the other areas of the first display area AA1 and the second display area AA2 except the second area Q2 are controlled to display normally.
For example, the first gray scale is 255 gray scales, the second area Q2 can be controlled to display black, and the other areas of the first display area AA1 and the second display area AA2 except the second area Q2 can be controlled to normally display white images. On one hand, the second area Q2 is displayed in full black, and the lens of the optical measuring device can be better aligned with the first area Q1, so that the brightness value of the first area Q1 can be measured more accurately; on the other hand, the second region Q2 is displayed in full black, so that the interference of the brightness of the second region Q2 on the first region Q1 can be avoided, and the brightness value of the first region Q1 can be accurately measured.
In the above embodiments, the second region is disposed at least partially around the first region, it being understood that the shape of the second region matches the shape of the first region. In addition, the size of the second area in the first direction and/or the second direction may not be too large, and the size of the second area may be set to achieve the effect of aligning the lens of the optical measurement apparatus with the first area.
In some optional embodiments, the gamma debugging method provided in the embodiments of the present invention may further include: determining a second target brightness value of the second display area under the first gray scale according to the target requirement; and performing gamma debugging on the second display area according to the second target brightness value to enable the difference value between the actual brightness value of the second display area and the second target brightness value to be within a first preset range.
Specifically, the above steps may be performed before step 110, that is, the gamma adjustment may be performed on the second display area AA2 first, so that the actual brightness value of the second display area AA2 meets the actual requirement.
For example, the target requirement may be a customer requirement, the customer generally proposes a brightness requirement of the white frame, that is, a brightness requirement at a gray level of 255, and if the first gray level is the gray level of 255, the second target brightness value is the brightness requirement of the white frame proposed by the customer. If the first gray scale is other gray scale values, the second target brightness value of the second display area AA2 at the first gray scale can be calculated according to the following formula (1).
Lx＝L255*(X/255)R*100％ (1)
In the above formula (1), L255Representing the intensity values corresponding to the 255 gray levels, which are typically given in the target requirement. X represents a numerical value of the first gray level, and R represents a Gamma (Gamma) value, and, for example, R may be 2.2. L isxIndicating the second target brightness value of the second display area AA2 at the first gray scale.
The gamma adjustment is performed on the second display area AA2 according to the second target brightness value, specifically, the gray scale voltage is provided to the sub-pixels in the second display area AA2, and the value of the gray scale voltage is continuously adjusted until the difference between the actual brightness value of the second display area AA2 and the second target brightness value is within a first preset range under the adjusted gray scale voltage, so as to meet the target requirement. In addition, the specific value of the first preset range may be set according to actual requirements, for example, the first preset range may be-43 nit to 43nit, which is not limited in the present invention.
According to the embodiment of the invention, the gamma debugging is firstly carried out on the second display area according to the target requirement so as to meet the actual requirement, and then the first display area is integrally in accordance with the actual requirement under the condition that the brightness of the first display area is not obviously different from that of the second display area.
In some optional embodiments, the gamma debugging method provided in the embodiments of the present invention may further include: and performing voltage drop compensation on the second display area to enable the difference value between the brightness value of the first area under the first gray scale and the average brightness value of the second display area under the first gray scale to be within a second preset range.
Specifically, the above step may be performed before the step of performing gamma debugging on the second display area. As described above, the voltage drop (IR drop) on the signal line is gradually increased in the direction away from the driving circuit 10, and thus, the display luminance may be different at different positions of the second display region. The voltage drop compensation is carried out on the second display area, so that the display brightness of different positions of the second display area is consistent with the overall brightness of the second display area, namely, the brightness value of the first area under the first gray scale is ensured to be consistent with the average brightness value of the second display area under the first gray scale.
In addition, the specific value of the second preset range may be set according to actual requirements, for example, the second preset range may be 8.6nit to 15nit, which is not limited in the present invention.
In some alternative embodiments, step 130 may include: calculating a first target brightness value of the first display area under other gray scales based on a first target brightness value of the first display area under the first gray scale and a preset gamma value; and performing gamma debugging on the first display area according to the first target brightness value of the first display area under the first gray scale and the first target brightness values of the first display area under other gray scales.
Specifically, the first target brightness value of the first display area at each of the other gray scales can be calculated according to the above formula (1). The preset gamma value may be 2.2, or other values.
The gamma adjustment is performed on the first display area AA1 according to the first target brightness value, specifically, the gray-scale voltage is provided to the sub-pixels in the first display area AA1, and the value of the gray-scale voltage is continuously adjusted until the difference between the actual brightness value of the first display area AA1 and the first target brightness value is within a third preset range under the adjusted gray-scale voltage. In addition, the third preset range may be the same as the first preset range.
On one hand, the first target brightness value required for gamma debugging of the first display area AA1 is determined according to the first area around the first display area AA1, which can improve the brightness consistency of the first display area AA1 and the second display area AA 2; on the other hand, gamma adjustment is performed on the first display area AA1 and the second display area AA2, respectively, so that the brightness of the display panel 100 can be guaranteed to meet the target requirement as a whole.
In any of the above embodiments, the shape and size of the first area are the same as those of the first display area AA 1. In this way, the brightness value of the first area that can be obtained more conforms to the actual situation of the first display area AA1, so that the first target brightness value required for gamma debugging of the first display area AA1 can be determined more accurately.
Fig. 5 is a schematic structural diagram of a gamma debugging apparatus according to an embodiment of the present invention. The gamma debugging device can be used for a display panel, the display panel is provided with a first display area and a second display area, the light transmittance of the first display area is greater than that of the second display area, the second display area comprises at least one first area, and the first area and the first display area are separated by a preset distance. As shown in fig. 5, the gamma debugging apparatus provided by the embodiment of the present invention includes the following modules:
a data obtaining module 501, configured to obtain a current brightness value of at least one first region in a first gray scale;
a target brightness determining module 502, configured to determine, based on the current brightness value, a first target brightness value of the first display area in the first gray scale;
the first debugging module 503 is configured to perform gamma debugging on the first display area according to the first target brightness value.
According to the gamma debugging device provided by the embodiment of the invention, the current brightness value of the first area around at least one first display area under the first gray scale is obtained; then, based on the current brightness value, determining a first target brightness value of the first display area under the first gray scale; and carrying out gamma debugging on the first display area according to the first target brightness value. According to the embodiment of the invention, the actually required adjustment brightness of the first display area is determined based on the current brightness value of the first area around the first display area, so that the actual display brightness of the first display area and the actual display brightness of the second display area tend to be consistent, the brightness consistency of the display panel is improved, and the user experience is improved.
In some alternative embodiments, the target brightness determination module 502 may be specifically configured to:
and taking the current brightness value of a first area as a first target brightness value of the first display area at the first gray scale.
Therefore, the first target brightness value corresponding to the first display area can be accurately determined only by acquiring the brightness value of one first area, and the method is simple and convenient and can improve the efficiency.
In some optional embodiments, the driving circuit of the display panel is located in the non-display area of the display panel and located at any side of the first display area in the second direction, and the first area is located at any side of the first display area in the first direction, wherein the second direction intersects with the first direction.
Therefore, the first area better accords with the actual situation of the first display area, and the first target brightness value of the first display area determined according to the current brightness value of the first area is more accurate.
In some optional embodiments, the number of the first areas is more than two, and the more than two first areas are distributed around the first display area, and the target brightness determining module 502 may specifically be configured to:
calculating the current average brightness value of more than two first areas according to the current brightness value of each first area;
and taking the current average brightness value as a first target brightness value of the first display area under the first gray scale.
Therefore, based on the current brightness values of the plurality of first areas around the first display area, the first target brightness value required by gamma debugging of the first display area can be more accurately determined, the consistency of the display brightness of the first display area and the second display area is further improved, an obvious boundary between the first display area and the second display area is avoided, and the user experience is improved.
In some optional embodiments, the second display area further comprises a second region at least partially surrounding the first region, and the apparatus may further comprise:
and the display control module is used for controlling the second area to display in full black and controlling the first display area and the second display area to display normally except other areas of the second area.
On one hand, the second area is displayed in full black, so that the lens of the optical measurement equipment can be aligned with the first area better, and the brightness value of the first area can be measured more accurately; on the other hand, the second area is displayed in full black, so that the interference of the brightness of the second area to the first area can be avoided, and the brightness value of the first area can be accurately measured.
In some optional embodiments, the apparatus may further comprise:
a second target brightness determining module for determining a second target brightness value of the second display area under the first gray scale according to the target requirement,
and the second debugging module is used for carrying out gamma debugging on the second display area according to the second target brightness value, so that the difference value between the actual brightness value of the second display area and the second target brightness value is in a first preset range.
According to the embodiment of the invention, the gamma debugging is firstly carried out on the second display area according to the target requirement so as to meet the actual requirement, and then the first display area also meets the target requirement on the whole under the condition that the brightness of the first display area is not obviously different from that of the second display area.
In some optional embodiments, the apparatus may further include:
and the compensation module is used for performing voltage drop compensation on the second display area so that the difference value between the brightness value of the first area under the first gray scale and the average brightness value of the second display area under the first gray scale is within a second preset range.
The voltage drop compensation is carried out on the second display area, so that the display brightness of different positions of the second display area is consistent with the overall brightness of the second display area, namely, the brightness value of the first area under the first gray scale is ensured to be consistent with the average brightness value of the second display area under the first gray scale.
In some optional embodiments, the first debugging module 503 is specifically configured to:
calculating a first target brightness value of the first display area under other gray scales based on a first target brightness value of the first display area under the first gray scale and a preset gamma value;
and performing gamma debugging on the first display area according to the first target brightness value of the first display area under the first gray scale and the first target brightness values of the first display area under other gray scales.
On one hand, a first target brightness value required by gamma debugging of the first display area is determined according to a first area around the first display area, so that the brightness consistency of the first display area and the second display area can be improved; on the other hand, the gamma debugging is respectively carried out on the first display area and the second display area, and the brightness of the display panel can be guaranteed to integrally meet the target requirement.
In any of the above embodiments, the shape and size of the first area are the same as those of the first display area.
Therefore, the acquired brightness value of the first area better conforms to the actual situation of the first display area, and the first target brightness value required by gamma debugging on the first display area can be more accurately determined.
The functional blocks shown in the above-described structural block diagrams may be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, it may be, for example, an electronic circuit, an Application Specific Integrated Circuit (ASIC), suitable firmware, plug-in, function card, or the like. When implemented in software, the elements of the invention are the programs or code segments used to perform the required tasks. The program or code segments may be stored in a machine-readable medium or transmitted by a data signal carried in a carrier wave over a transmission medium or a communication link. A "machine-readable medium" may include any medium that can store or transfer information. Examples of a machine-readable medium include electronic circuits, semiconductor memory devices, ROM, flash memory, Erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, Radio Frequency (RF) links, and so forth. The code segments may be downloaded via computer networks such as the internet, intranet, etc.
In accordance with the above-described embodiments of the present invention, these embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention and various embodiments with various modifications as are suited to the particular use contemplated. The invention is limited only by the claims and their full scope and equivalents.

Claims (10)

1. The gamma debugging method is characterized by being used for a display panel, wherein the display panel is provided with a first display area and a second display area, the light transmittance of the first display area is greater than that of the second display area, the second display area comprises at least one first area, and the first area and the first display area are separated by a preset distance; the method comprises the following steps:
acquiring a current brightness value of at least one first area under a first gray scale;
determining a first target brightness value of the first display area under the first gray scale based on the current brightness value;
and carrying out gamma debugging on the first display area according to the first target brightness value.
2. The gamma debugging method of claim 1, wherein said determining a first target brightness value of the first display area at the first gray level based on the current brightness value comprises:
and taking a current brightness value of the first area as the first target brightness value of the first display area at the first gray scale.
3. The gamma debugging method of claim 2, wherein the driving circuit of the display panel is located in a non-display area of the display panel and is located at any side of the first display area in a second direction, and the first area is located at any side of the first display area in the first direction, wherein the second direction intersects with the first direction.
4. The gamma debugging method of claim 1, wherein the number of the first regions is two or more, and the two or more first regions are distributed around the first display area, and wherein the determining the first target brightness value of the first display area at the first gray scale based on the current brightness value comprises:
calculating the current average brightness value of more than two first areas according to the current brightness value of each first area;
and taking the current average brightness value as a first target brightness value of the first display area under the first gray scale.
5. The gamma debugging method of claim 1, wherein said second display region further comprises a second region at least partially surrounding said first region, and wherein said method further comprises, prior to said obtaining a current brightness value of at least one of said first regions at a first gray level:
and controlling the second area to display in full black, and controlling the other areas except the second area in the first display area and the second display area to display normally.
6. The gamma debugging method of claim 1, further comprising:
determining a second target brightness value of the second display area under the first gray scale according to a target requirement;
and performing gamma debugging on the second display area according to the second target brightness value, so that the difference value between the actual brightness value of the second display area and the second target brightness value is within a first preset range.
7. The gamma debugging method of claim 1, further comprising:
and performing voltage drop compensation on the second display area to enable the difference value between the brightness value of the first area under the first gray scale and the average brightness value of the second display area under the first gray scale to be within a second preset range.
8. The gamma debugging method according to claim 1, wherein the gamma debugging the first display region according to the first target brightness value comprises:
calculating a first target brightness value of the first display area under other gray scales based on a first target brightness value and a preset gamma value of the first display area under the first gray scale;
and performing gamma debugging on the first display area according to the first target brightness value of the first display area under the first gray scale and the first target brightness values of the first display area under other gray scales.
9. The gamma debugging method of any one of claims 1-8, wherein the shape and size of the first region are the same as the shape and size of the first display region.
10. The gamma debugging device is characterized by being used for a display panel, wherein the display panel is provided with a first display area and a second display area, the light transmittance of the first display area is greater than that of the second display area, the second display area comprises at least one first area, and the first area and the first display area are separated by a preset distance; the device comprises:
the data acquisition module is used for acquiring the current brightness value of at least one first area under a first gray scale;
the first target brightness determining module is used for determining a first target brightness value of the first display area under the first gray scale based on the current brightness value;
and the first debugging module is used for carrying out gamma debugging on the first display area according to the first target brightness value.
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