TWI796967B - Display device - Google Patents

Abstract

A display device includes a touch display panel, a back bezel and a plurality of actuators. The back bezel surrounds the touch display panel and is disposed under the touch display panel. The back bezel includes a frame and a plurality of extension portions extending from the frame. Each actuator is correspondingly disposed on one of the extension portions.

Description

display device

The present invention relates to a display device, and in particular to a display device with vibration feedback.

In recent years, in order to improve consumer experience, manufacturers have provided vibration feedback effects in some display devices, allowing users to feel when they touch the display screen.

However, existing display devices with vibration feedback are limited to small-sized display screens. For a larger size display screen, the vibration feedback cannot be effectively transmitted to a farther area.

The present invention relates to a display device, which uses a plurality of actuators and extensions of the back frame to generate vibration effects in multiple zones to the touch display panel, so that the effect of vibration feedback is no longer limited to small-sized display devices. endemic.

According to one aspect of the present invention, a display device is provided. The display device includes a touch display panel, a back frame and a plurality of actuators. The back frame surrounds the touch display panel and includes a frame body and a plurality of extensions extending from the frame body. The actuators are correspondingly arranged on one of the extension parts.

In order to have a better understanding of the above-mentioned and other aspects of the present invention, the following specific examples are given in detail with the accompanying drawings as follows:

Various embodiments of the present invention will be described in detail below and illustrated with accompanying drawings. In addition to these detailed descriptions, the present invention can also be widely implemented in other embodiments, and any easy replacement, modification, and equivalent changes of any of the described embodiments are included in the scope of the present invention, and are defined in the following patent scope prevail. Furthermore, the size ratios in the drawings are not drawn to the same proportions as the actual products. In the description of the specification, in order to make readers have a more complete understanding of the present invention, many specific details and implementation examples are provided; however, these specific details and implementation examples should not be regarded as limitations of the present invention. Also, well-known steps or elements have not been described in detail in order to avoid unnecessarily limiting the invention. And, unless otherwise stated, the same reference numerals in different drawings can be regarded as corresponding components. The illustrations in these drawings are for clearly expressing the connection relationship between the various elements in these embodiments, and do not depict the actual size or proportional relationship of the various elements.

Fig. 1 is a bottom view showing a display device 100 according to an embodiment of the present invention; Fig. 2A is a cross-sectional view along the section line 2-2' of Fig. 1 . In the following drawings, for the sake of brevity, the drawing of some elements is omitted.

Referring to FIG. 1 and FIG. 2 , the display device 100 includes a back frame 110 , a touch display panel 120 and a plurality of actuators 130 . In some embodiments, the touch display panel 120 can be a non-self-luminous display, such as a liquid crystal display; in other embodiments, the touch display panel 120 can also be a self-luminous display, such as an electroluminescence ( Electro Luminescence, EL) elements (such as organic EL elements, inorganic EL elements, perovskite light-emitting elements, quantum dot light-emitting elements, or other suitable electroluminescent materials) displays or other suitable self-luminous displays; the present invention and The type of the touch display panel 120 is not limited.

The back frame 110 is, for example, a metal sheet, such as iron or aluminum, which surrounds the touch display panel 120 . Specifically, the touch display panel 120 may have a touch display surface 120A, and the back frame 110 is disposed below the touch display panel 120 relative to the touch display surface 120A. The back frame 110 includes a frame body 111 and a plurality of extensions 112 extending from the frame body. In terms of manufacturing process, the back frame 110 can be made by sheet metal method, for example, the frame body 111 and the extension portion 112 are formed integrally by die stamping. The back frame 110 may have a hollow portion 110H, and the extension portion 112 may extend toward the inside of the back frame 110 and be located in the hollow portion 110H.

Each of the actuators 130 is correspondingly disposed on one of the extension parts 112 , and can be an off-axis rotary block motor or a linear resonant actuator. When the user touches the touch display surface 120A of the touch display panel 120 and the touch pressure is higher than a predetermined value, the actuator 130 will be triggered to vibrate. The extension part 112 can transmit the vibration energy of the actuator 130 , so that the touch display panel 120 provides vibration feedback to the user.

The actuator 130 can be disposed on a side of the extension portion 112 facing away from the touch display panel 120 . Further, the actuator 130 may be disposed at an end of the extension portion 112 away from the frame body 111 . That is, the actuator 130 can be disposed at the free end of the extension part 112 . The vibration energy can be transmitted to various positions of the touch display panel 120 through the extension arm of the extension part 112, avoiding the problem that the vibration energy will attenuate with distance when the single actuator 130 vibrates; The arrangement can further achieve the effect of partitioning the vibration of the touch display panel 120 , so that the vibration can be effectively transmitted to the desired vibration position, so as to avoid energy waste.

The frame body 111 may include a side portion 111s and a bottom portion 111b, and the extension portion 112 may extend from the bottom portion 111b. In one embodiment, as shown in FIG. 2A , the actuator 130 can provide vertical vibration, that is, the actuator 130 can vibrate in a direction perpendicular to the touch display surface 120A of the touch display panel 120 . Here, the side portion 111s can stand upright on the bottom 111b and be substantially vertically connected to the bottom 111b, but the extension portion 112 still maintains a sufficient distance from the touch display panel 120 for the actuator 130 to vibrate. In another embodiment, please refer to FIG. 2B , which is a cross-sectional view illustrating a display device 200 according to another embodiment of the present invention, wherein the back frame 210 is slightly different from the back frame 110 in FIG. 2A . Here, a bending angle θ can be formed between the bottom 211b and the side portion 211s of the frame body 211 of the back frame 210, and the bending angle θ makes the extension portion 212 gradually move away from the touch display panel 120 from the bottom 211b, so the bending angle θ If it is greater than 90 degrees, more distance is reserved between the extension portion 112 and the touch display panel 120 for the actuator 130 to vibrate, so as to increase the vibration amplitude.

In another embodiment, please refer to FIG. 3 , which is a cross-sectional view along the secant line 3-3' of FIG. 1 according to an embodiment of the present invention. The actuator 130 shown in FIG. 3 can provide horizontal vibration, that is, the actuator 130 can vibrate in a direction parallel to the touch display surface 120A of the touch display panel 120 . Since the vertical vibration needs to reserve enough vertical distance for vibration, compared with the display device that provides the actuator 130 that provides vertical vibration, the display device that provides the actuator 130 of horizontal vibration can further reduce its size. Device thickness.

In the foregoing embodiments, each extension portion 112 , 212 is illustrated as an example of a straight shape, but the present invention is not limited thereto. Please refer to FIG. 4 , which is a bottom view of a display device 300 according to yet another embodiment of the present invention, wherein the back frame 310 is different from the back frame 110 in FIG. 1 . Here, the extension portion 312 of the back frame 310 can be in a loop shape or a spiral shape, and the actuator 130 can be disposed at the tail end of the loop shape or the spiral extension portion 312 . Since the length of the extension part 312 can be further lengthened, and its circular or helical shape can further expand the scope of the vibration, so that the vibration energy can be more evenly distributed in a specific area of the touch display panel 120, which is different from the Only limit the vibration to a single point or a linear extension.

Of course, the shape of the extension can be changed according to design conditions. For example, the extension part can be one of in-line shape, loop shape and spiral shape or a combination thereof. Therefore, there is no limitation that all extensions are constrained to the same or single shape.

FIG. 5 is a bottom view of a display device 400 according to another embodiment of the present invention. Please refer to FIG. 5 , the difference from the back frame 110 in FIG. 1 is that the back frame 410 may further include a plurality of connection portions 413 and joint portions 414 , and the connection portions 413 are connected between the extension portion 112 and the joint portion 414 . In addition, the display device 400 may further include vibration sensors 440a, 440b disposed on the connecting portion 414 . The vibration sensors 440a, 440b can be used to sense the vibration energy transmitted by each actuator 130a, 130b, 130c, 130d, 130e, 130f. For example, in the configuration shown in FIG. 5, the vibration sensor 440a is located between the actuators 130a, 130b, 130d, 130e, and the vibration sensor 440b is located between the actuators 130b, 130c, 130e, 130f. That is, the vibration sensors 440a, 440b are respectively located between the actuators in the four directions, so as to respectively receive the vibration energy transmitted from the four directions.

The display device 400 can judge whether the current vibration among the actuators 130a, 130b, 130c, 130d, 130e, 130f is uniform or reaches the expected vibration standard according to the vibration energy sensed by the vibration sensors 440a, 440b, and Based on this, the actuators 130a, 130b, 130c, 130d, 130e, 130f are calibrated, for example, through a pre-established look-up table.

FIG. 6 shows the relationship between vibration intensity and time in different modes. For example, if the vibration sensors 440a, 440b sense the vibration modes of the actuators 130a, 130b, 130c, 130d, 130e, 130f as shown in Table 1, with reference to Fig. 6, it is known that the actuators 130b, The vibration intensity of 130e, 130f is insufficient. At this time, the display device 400 can correct the actuators 130b, 130e, 130f to the required vibration intensity to achieve the expected vibration standard, avoiding the transmission of vibration due to process or assembly tolerance factors, or can further allow The user selects which areas to intensify the vibration.

Table I Actuator 130a Actuator 130b Actuator 130c Actuator 130d Actuator 130e Actuator 130f mode 1 mode 2 ○ ○ ○ mode 3 ○ ○ ○ Mode 4

In addition, since the vibration sensors 440a and 440b are only used to compare whether there is a difference in the vibration energy transmitted from each direction, it is not expected to receive all the vibration energy and generate unexpected vibration here. Therefore, as shown in FIG. 5 , the width of each connection portion 413 is smaller than the width of each extension portion 112 to avoid unwanted vibration.

Although the present invention has been disclosed above with the embodiments, it is not intended to limit the present invention. Those skilled in the art of the present invention can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be defined by the scope of the appended patent application.

100,200,300,400: display device 110,210,310,410: back frame 110H: Hollow part 111,211: frame 111b, 211b: bottom 111s, 211s: side 112,212,312: extension 120: Touch display panel 120A: touch display surface 130, 130a, 130b, 130c, 130d, 130e, 130f: actuator 413: connection part 414: Connection Department 440a, 440b: vibration sensor θ: Bending angle

FIG. 1 is a bottom view illustrating a display device according to an embodiment of the present invention; Figure 2A shows a cross-sectional view along the section line 2-2' of Figure 1; FIG. 2B is a cross-sectional view illustrating a display device according to another embodiment of the present invention; Fig. 3 is a sectional view along the section line 3-3' of Fig. 1 according to an embodiment of the present invention; FIG. 4 is a bottom view of a display device according to yet another embodiment of the present invention; Fig. 5 is a bottom view illustrating a display device according to yet another embodiment of the present invention; and FIG. 6 shows the relationship between vibration intensity and time in different modes.

100: display device

110: back frame

110H: Hollow part

111: frame

112: Extension

120: Touch display panel

130: Actuator

Claims (10)

A display device comprising: a touch display panel; A back frame surrounding the touch display panel, the back frame includes a frame body and a plurality of extensions extending from the frame body; and A plurality of actuators are each correspondingly disposed on one of the extension parts. The display device according to claim 1, wherein the back frame has a hollow portion, and the extending portions are located in the hollow portion. The display device as claimed in claim 1, wherein the frame body includes a side portion and a bottom portion, the extending portions extend from the bottom portion, a bending angle is formed between the bottom portion and the side portion, and the bending angle The extending parts are gradually away from the touch display panel from the bottom. The display device according to claim 1, wherein the actuators are off-axis rotary block motors or linear resonant actuators. The display device according to claim 1, wherein the actuators provide vertical vibration or horizontal vibration. The display device according to claim 1, wherein the actuators are disposed on a side of the extensions facing away from the touch display panel. The display device according to claim 1, wherein each of the extensions is one of a straight shape, a loop shape, and a spiral shape or a combination thereof. The display device according to claim 1, wherein the actuators are disposed at an end of the extensions away from the frame. The display device as described in claim 1, further includes a vibration sensor, wherein the back frame further includes a plurality of connecting parts and a connecting part, the vibration sensor is arranged on the connecting part, and the connecting parts are connected to Between the extending parts and the connecting part. The display device according to claim 9, wherein the width of each connecting portion is smaller than the width of each extending portion.

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