Display module for preventing backlight source from influencing IR hole

Abstract

The utility model discloses a display module for preventing a backlight source from influencing an IR hole, which comprises a cover plate, a display screen structure and a backlight structure which are sequentially stacked, the backlight structure comprises a fixing frame and a backlight assembly, the fixing frame is provided with a containing cavity, and the backlight assembly is placed in the containing cavity; the cover plate is provided with an IR hole, the IR hole is close to the edge of the cover plate, the side, close to the IR hole, of the fixing frame is provided with a shading protruding part, and the shading protruding part extends in the direction close to the cover plate so that one side face of the shading protruding part can abut against one side face of the cover plate. Therefore, the backlight source is shielded for the IR hole through the shading convex part, so that black shading gummed paper is replaced, the effect of preventing the backlight source from influencing the IR hole is achieved, the black shading gummed paper does not need to be used, the material cost is reduced, meanwhile, the processing procedure of attaching the black shading gummed paper is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of display modules, in particular to a display module for preventing a backlight source from affecting an IR hole. Background Art

[0002] With the popularity of smart devices, display modules have become an indispensable part of modern mobile devices. In these display modules, IR (infrared) sensing devices are usually set, that is, photosensitive IR holes are set on the cover of the display module. The sensing device in the photosensitive IR hole is mainly to sense the intensity of ambient light and adjust the brightness of the screen. Therefore, it is necessary to avoid the light emitted by the backlight and glass affecting the work of the IR hole sensing device. Please refer to Figure 1 and Figure 2 As shown in the figure, the existing solution is to stick a piece of black light-shielding tape on the top of the backlight structure, and use the black light-shielding tape to shield the backlight source emitted by the backlight structure at the lower end of the IR hole. However, the method of sticking light-shielding paper not only increases the material cost, but also requires additional processing steps, which leads to low production efficiency and reduces the competitiveness of the product. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a display module for preventing a backlight source from affecting an IR hole, thereby eliminating light-shielding tape, reducing material costs, reducing processing steps, and thereby improving production efficiency.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] A display module for preventing a backlight source from affecting an IR hole, comprising: a cover plate, a display screen structure and a backlight structure stacked in sequence, the backlight structure comprising a fixing frame and a backlight assembly, the fixing frame being provided with a receiving cavity, the backlight assembly being placed in the receiving cavity; an IR hole being provided on the cover plate, the IR hole being close to an edge of the cover plate, a light shielding protrusion being provided on a side of the fixing frame close to the IR hole, the light shielding protrusion extending in a direction close to the cover plate so that one side of the light shielding protrusion abuts against one side of the cover plate.

[0006] In one of the embodiments, the fixing frame is an integrated rubber-iron frame, and a shading protrusion is provided on the plastic frame of the integrated rubber-iron frame close to the IR hole. The shading protrusion extends in a direction close to the cover plate so that one side of the shading protrusion is abutted against one side of the cover plate.

[0007] In one embodiment, the plastic frame is made of black or gray material, so that the light-shielding protrusion is a black light-shielding protrusion or a gray light-shielding protrusion.

[0008] In one of the embodiments, the light shielding protrusion is located directly above the IR hole, and the length of the light shielding protrusion is 1.0 mm to 5.0 mm larger than the length of the IR hole.

[0009] In one of the embodiments, a avoidance groove is formed on a side of the cover plate facing the light-shielding protrusion, and one end of the light-shielding protrusion extends into the avoidance groove.

[0010] In one embodiment, the cover plate is a glass cover plate or a PMMA plate.

[0011] In one embodiment, the display screen structure includes an upper polarizer, an upper glass, a lower glass and a lower polarizer stacked in sequence, the upper polarizer is located on a side close to the cover plate, and a bonding adhesive is provided on a side of the upper polarizer facing the cover plate, and the display screen structure is connected to the cover plate through the bonding adhesive.

[0012] In one embodiment, the bonding adhesive is OCA optical adhesive.

[0013] In one embodiment, the backlight assembly includes an upper light enhancement film, a lower light enhancement film, a diffusion film, a light guide plate and a reflective film stacked in sequence, the upper light enhancement film is close to one side of the display structure, and the reflective film is located on the bottom surface of the accommodating cavity.

[0014] In one embodiment, the backlight structure further includes a light-shielding double-sided adhesive, the light-shielding double-sided adhesive is attached to a side surface of the fixing frame facing the display screen structure, and the light-shielding double-sided adhesive is located between the backlight assembly and the display screen structure.

[0015] Compared with the prior art, the utility model has at least the following advantages:

[0016] The display module of the utility model for preventing the backlight source from affecting the IR hole is provided with a cover plate, a display screen structure and a backlight structure which are stacked in sequence, and a shading protrusion is provided on a fixing frame in the backlight structure, and the shading protrusion is extended in a direction close to the cover plate, and the backlight source is shielded for the IR hole by the shading protrusion, thereby replacing the black shading tape, and preventing the backlight source from affecting the IR hole. In this way, the black shading tape does not need to be used, thereby reducing material costs, and at the same time reducing the processing steps of attaching the black shading tape, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments are briefly introduced below.

[0018] Figure 1A schematic diagram of the stacking structure of an existing display module that uses black light-shielding tape to prevent the backlight source from affecting the IR hole;

[0019] Figure 2 for Figure 1 A schematic diagram of the front view structure of an existing display module that uses black light-shielding tape to prevent the backlight source from affecting the IR hole;

[0020] Figure 3 It is a schematic diagram of the stacking structure of a display module for preventing a backlight source from affecting an IR hole in one embodiment of the utility model;

[0021] Figure 4 for Figure 3 A schematic diagram of a stacking structure of a display module for preventing a backlight source from affecting an IR hole from another viewing angle;

[0022] Figure 5 for Figure 3 A schematic diagram of the front view structure of a display module for preventing a backlight source from affecting an IR hole. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings.

[0024] See also Figure 3 , Figure 4 and Figure 5 As shown, a display module 10 for preventing a backlight source from affecting an IR hole comprises: a cover plate 100, a display screen structure 200 and a backlight structure 300 which are stacked in sequence, the backlight structure 300 comprises a fixing frame 310 and a backlight assembly 320, the fixing frame 310 is provided with a receiving cavity, and the backlight assembly 320 is placed in the receiving cavity; an IR hole 110 is provided on the cover plate 100, the IR hole 110 is close to an edge of the cover plate 100, a light shielding protrusion 311 is provided on one side of the fixing frame 310 close to the IR hole 110, and the light shielding protrusion 311 extends in a direction close to the cover plate 100 so that one side of the light shielding protrusion 311 abuts against one side of the cover plate 100.

[0025] Please note that Figure 1 and Figure 2As shown, it is a structural diagram of the display module 20 that uses black shading tape to prevent the backlight source from affecting the IR hole. That is, a black shading tape 20B is attached to the top of the corresponding IR hole 20A, and the black shading tape 20B is used to prevent the backlight source from affecting the sensing device of the IR hole. This shading method will increase the material cost of the black shading tape 20B, and will also increase the processing steps of attaching the black shading tape 20B, so it will also reduce the production efficiency. Therefore, in the utility model, a shading protrusion 311 for shading is directly provided on the fixing frame 310 in the backlight structure, and the shading protrusion 311 extends toward the direction close to the cover plate 100, that is, the shading protrusion 311 blocks the backlight source to prevent the backlight source from affecting the sensing device on the IR hole. In addition, the shading protrusion 311 and the fixing frame 310 are an integrally formed structure, so after the fixing frame 310 is assembled, the shading protrusion 311 can directly shield the IR hole 110, thereby eliminating the black shading tape, reducing the processing steps, and thus improving production efficiency.

[0026] Furthermore, the fixing frame 310 is a plastic-iron integrated frame, and the plastic frame on the side of the plastic-iron integrated frame close to the IR hole 110 is provided with a light shielding protrusion 311, and the light shielding protrusion 311 extends in a direction close to the cover plate 100, so that one side of the light shielding protrusion 311 abuts against one side of the cover plate 100. The plastic-iron integrated frame means that the fixing frame 310 includes a plastic frame 310A and an iron frame 310B, and the plastic frame 310A and the iron frame 310B are formed as one body, and the light shielding protrusion 311 is formed on the plastic frame 310A. In this way, after the fixing frame 310 is assembled with other components, it can directly replace the black light shielding tape to prevent the backlight source from affecting the IR hole.

[0027] Furthermore, the plastic frame 310A is made of black or gray material, so that the light shielding protrusion 311 is a black light shielding protrusion or a gray light shielding protrusion. The plastic frame 310A is made of black or gray material to prevent the light shielding protrusion 311 extending from the plastic frame 310A from being too thin, so that the backlight source can penetrate the light shielding protrusion 311 and continue to affect the sensing device of the IR aperture.

[0028] Furthermore, the light shielding protrusion 311 is located directly above the IR hole 110, and the length of the light shielding protrusion 311 is 1.0 mm to 5.0 mm larger than the length of the IR hole 110. In this way, it can be ensured that the light shielding protrusion 311 can completely block the light emitted from the backlight structure and the display structure at the lower end of the IR hole 110, thereby avoiding interference with the function of the IR hole.

[0029] Furthermore, a relief groove is provided on the side of the cover plate 100 facing the light shielding protrusion 311, and one end of the light shielding protrusion 311 extends into the relief groove. That is, a relief groove is dug on the cover plate 100 so that the light shielding protrusion 311 can extend into the relief groove. In this way, even if there is a gap between the light shielding protrusion 311 and the cover plate 100 due to production or assembly errors, the light source can still shine out from the gap to affect the IR hole. In this way, by providing a relief groove and allowing the light shielding protrusion 311 to extend into the relief groove, the light shielding effect can be further improved.

[0030] Preferably, the cover plate 100 is a glass cover plate or a PMMA (acrylic plate) plate.

[0031] Specifically, the display screen structure 200 includes an upper polarizer 210, an upper glass 220, a lower glass 230 and a lower polarizer 240 stacked in sequence, the upper polarizer 210 is located on a side close to the cover plate 100, and a bonding adhesive 250 is provided on the side of the upper polarizer 210 facing the cover plate 100, and the display screen structure 200 is connected to the cover plate 100 through the bonding adhesive 250. The display screen structure 200 realizes the display effect. In this embodiment, the display screen structure is a liquid crystal display screen structure, the upper glass 220 is a CF (color filter) glass, the lower glass 230 is a TFT (thin film transistor) glass, and a liquid crystal layer is provided between the upper glass 220 and the lower glass 230. Preferably, the bonding adhesive is an OCA (special adhesive) optical adhesive.

[0032] In one embodiment, the backlight assembly 320 includes an upper light enhancement film 321, a lower light enhancement film 322, a diffusion film 323, a light guide plate 324 and a reflective film 325 which are stacked in sequence. The upper light enhancement film 321 is close to the side of the display structure 200, and the reflective film 325 is located on the bottom surface of the accommodating cavity. The upper light enhancement film 321 and the lower light enhancement film 322 can enhance the light; the light guide plate 324 plays a role in conducting the light, and the emission film 325 plays a role in reflecting the light; the diffusion film 323 can ensure the uniformity of light divergence, thereby ensuring the display effect.

[0033] Furthermore, the backlight structure 300 further includes a light-shielding double-sided adhesive tape 330, which is attached to a side surface of the fixing frame 310 facing the display structure 200, and is located between the backlight assembly 320 and the display structure 200. The light-shielding double-sided adhesive tape 330 plays a light-shielding role, thereby preventing the display module from leaking light sideways and affecting the display effect.

[0034] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A display module for preventing a backlight source from affecting an IR aperture, characterized in that: include: A cover plate, a display screen structure and a backlight structure are stacked in sequence, wherein the backlight structure comprises a fixing frame and a backlight assembly, wherein the fixing frame is provided with an accommodating cavity, and the backlight assembly is placed in the accommodating cavity; An IR hole is provided on the cover plate, and the IR hole is close to the edge of the cover plate. A light-shielding protrusion is provided on the side of the fixing frame close to the IR hole, and the light-shielding protrusion extends in a direction close to the cover plate so that one side of the light-shielding protrusion is abutted against one side of the cover plate.

2. The display module for preventing the backlight source from affecting the IR aperture according to claim 1, characterized in that: The fixing frame is a rubber-iron integrated frame, and a plastic frame on the side of the rubber-iron integrated frame close to the IR hole is provided with a shading protrusion, and the shading protrusion extends in a direction close to the cover plate so that one side of the shading protrusion abuts against one side of the cover plate.

3. The display module for preventing the backlight source from affecting the IR aperture according to claim 2, characterized in that: The plastic frame is made of black or grey material, so that the light shielding protrusion is a black light shielding protrusion or a grey light shielding protrusion.

4. The display module for preventing the backlight source from affecting the IR aperture according to claim 3, characterized in that: The light shielding protrusion is located directly above the IR hole, and the length of the light shielding protrusion is 1.0 mm to 5.0 mm larger than the length of the IR hole on one side.

5. The display module for preventing the backlight source from affecting the IR aperture according to claim 4, characterized in that: A avoidance groove is formed on one side of the cover plate facing the light shielding protrusion, and one end of the light shielding protrusion extends into the avoidance groove.

6. The display module for preventing a backlight source from affecting an IR aperture according to any one of claims 1 to 5, characterized in that: The cover plate is a glass cover plate or a PMMA plate.

7. The display module for preventing a backlight source from affecting an IR aperture according to any one of claims 1 to 5, characterized in that: The display screen structure includes an upper polarizer, an upper glass, a lower glass and a lower polarizer stacked in sequence, the upper polarizer is located on a side close to the cover plate, a bonding adhesive is provided on a side of the upper polarizer facing the cover plate, and the display screen structure is connected to the cover plate through the bonding adhesive.

8. The display module for preventing the backlight source from affecting the IR aperture according to claim 7, characterized in that: The bonding adhesive is OCA optical adhesive.

9. The display module for preventing a backlight source from affecting an IR aperture according to any one of claims 1 to 5, characterized in that: The backlight assembly includes an upper brightness enhancement film, a lower brightness enhancement film, a diffusion film, a light guide plate and a reflective film which are stacked in sequence. The upper brightness enhancement film is close to one side of the display screen structure, and the reflective film is located on the bottom surface of the accommodating cavity.

10. The display module for preventing a backlight source from affecting an IR aperture according to any one of claims 1 to 5, characterized in that: The backlight structure further includes a light-shielding double-sided adhesive, which is attached to a side surface of the fixing frame facing the display screen structure, and is located between the backlight assembly and the display screen structure.

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