Display module for solving problem that display screen becomes white due to static electricity

Abstract

The utility model discloses a display module capable of solving the problem that a display screen becomes white due to static electricity, which comprises a cover plate, a display screen and a backlight module which are sequentially arranged, conductive ink is printed on the back face of the cover plate in a silk-screen mode, and conductive paper used for connecting the conductive ink and the backlight module is attached to the back face of the backlight module. The display module has the effects that the conductive ink is arranged, and the cover plate and the backlight module are conducted through the conductive paper, so that static electricity generated on the cover plate and the display screen is released, and the display screen is prevented from becoming white.

Description

Technical Field

[0001] The utility model relates to the technical field of display modules, in particular to a display module for solving the problem of whitening of a display screen due to static electricity. Background Art

[0002] IPS (In-Plane Switching) type In-Cell LCD is a liquid crystal display that combines IPS technology and In-Cell technology. It has the excellent color accuracy, wide viewing angle and accurate color reproduction capabilities provided by IPS technology, and uses In-Cell technology to integrate touch sensors into pixels to achieve a thinner, lighter, faster and more accurate touch experience. This display is usually used in high-end smart phones, tablets and other mobile devices to provide excellent visual effects and touch experience. Due to the lateral distribution of pixel electrodes and common VCOM electrodes, IPS TFT is sensitive to external static electricity. Therefore, it is necessary to coat a grounded ITO (indium tin oxide conductive glass) film on the upper protective glass as a shielding layer. At the same time, in order not to shield the touch function of the In-Cell LCD, it is required to make the resistance of this ITO film greater than 10^7ohm to form a high-resistance film.

[0003] In the prior art, due to the high resistance of the high-resistance film, the ability to conduct external static electricity will become poor. Static electricity is easy to stay on the surface of the high-resistance film, and it takes a long time to conduct the static electricity to the ground, which easily causes the display screen to appear white. Utility Model Content

[0004] The utility model aims to overcome the shortcomings of the prior art and provide a display module that solves the problem of whitening of a display screen due to static electricity.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] A display module for solving the problem of whitening of a display screen due to static electricity comprises: a cover plate, a display screen and a backlight module which are arranged in sequence, the back of the cover plate being silk-screened with conductive ink, and the back of the backlight module being attached with conductive paper for connecting the conductive ink and the backlight module.

[0007] In one embodiment, the back side of the backlight module is a backlight iron frame, and the cover plate and the backlight iron frame are electrically connected via the conductive paper.

[0008] In one embodiment, the size of the cover plate is larger than that of the display screen, the conductive ink is screen-printed in the area of ​​the cover plate beyond the display screen, and the conductive ink is screen-printed along a circle around the periphery of the display screen to the side of the cover plate facing the display screen.

[0009] In one embodiment, the thickness of the conductive ink is 5um-12um.

[0010] In one embodiment, a portion of the conductive paper is attached to the conductive ink on the back of the cover plate, and another portion of the conductive paper is attached to the backlight iron frame.

[0011] In one embodiment, the thickness of the conductive paper is 0.05 mm-0.1 mm.

[0012] In one embodiment, there are four sheets of conductive paper, which are respectively located on four sides of the backlight iron frame, and the four sheets of conductive paper respectively connect the four sides of the cover plate with the backlight iron frame.

[0013] In one embodiment, an FPC is bound to the display screen, one end of the FPC is bound to the display screen, and the other end of the FPC is bent and attached to the back side of the backlight iron frame.

[0014] In one embodiment, the conductive paper located at the lower side of the backlight iron frame covers the FPC.

[0015] In one embodiment, the back side of the cover plate is screen-printed with BM ink and reverse cover ink in sequence, and the conductive ink is screen-printed on a side of the reverse cover ink away from the BM ink.

[0016] Compared with the prior art, the utility model has at least the following advantages:

[0017] The utility model solves the problem that a display screen turns white due to static electricity by screen printing conductive ink on the back of a cover plate, and connecting the conductive ink to a backlight iron frame through conductive paper, so that the cover plate and the backlight iron frame are conductive, and the conductive ink contacts the display screen to conduct static electricity on the display screen. The static electricity is conducted to the backlight iron frame through the conductive paper and released, so as to avoid the problem that static electricity accumulates on the display screen and causes the display screen to turn white. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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.

[0019] Figure 1 A schematic diagram of the back structure of a cover plate in a display module provided by the utility model to solve the problem of whitening of a display screen due to static electricity;

[0020] Figure 2 A schematic diagram of the side cross-sectional structure of a display module provided by the utility model for solving the problem of whitening of a display screen due to static electricity;

[0021] Figure 3A schematic diagram of the back structure of a display module provided by the utility model for solving the problem of whitening of the display screen due to static electricity;

[0022] Figure 4 The utility model provides a schematic diagram of a stacking structure of cover plates in a display module for solving the problem of whitening of a display screen due to static electricity.

[0023] Description of the drawings: 10, cover plate; 11, conductive ink; 20, display screen; 21, FPC; 30, backlight module; 31, backlight iron frame; 40, conductive paper; 50, BM ink; 60, reverse cover ink; 70, coating layer. DETAILED DESCRIPTION

[0024] 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.

[0025] A display module for solving the problem of whitening of the display screen due to static electricity, referring to Figure 1 and Figure 2 , comprising a cover plate 10, a display screen 20 and a backlight module 30 arranged in sequence, wherein the cover plate 10 covers the surface of the display screen 20, and the size of the cover plate 10 is larger than the size of the display screen 20, and the cover plate 10 and the display screen 20 are fixed by OCA optical adhesive. The display screen 20 is accommodated in the backlight module 30, and the side of the cover plate 10 facing the backlight module 30 contacts the end surface of the backlight module 30.

[0026] Reference Figure 1 The back of the cover plate 10 is screen-printed with conductive ink 11 for conducting electricity. The conductive ink 11 has the ability to conduct current and discharge accumulated static electricity. The conductive ink 11 is screen-printed in the area of ​​the cover plate 10 beyond the display screen 20. The conductive ink 11 is screen-printed along the outer periphery of the display screen 20 to the side of the cover plate 10 facing the display screen 20. The conductive ink 11 contacts the side of the display screen 20, so that the static electricity generated on the display screen 20 can be discharged.

[0027] Further, refer to Figure 1 The thickness of the conductive ink 11 is 5um-12um. The conductive ink 11 contains metal particles so that the conductive ink 11 has conductivity. In one embodiment, the metal particles of the conductive ink 11 are made of nano silver particles.

[0028] Reference Figure 2 and Figure 3 The back of the backlight module 30 is a backlight iron frame 31, and a conductive paper 40 for conducting static electricity is arranged between the cover plate 10 and the backlight iron frame 31. Since the backlight iron frame 31 is made of metal material, static electricity can be released. When the cover plate 10 is connected to the backlight iron frame 31, the static electricity accumulated on the display screen 20 can be conducted to the backlight iron frame 31 for release.

[0029] Reference Figure 3 The conductive paper 40 is attached to the back of the backlight iron frame 31, a part of the conductive paper 40 is attached to the conductive ink 11 on the back of the cover plate 10, and another part of the conductive paper 40 is attached to the backlight iron frame 31. The conductive paper 40 connects the cover plate 10 and the backlight iron frame 31.

[0030] Further, refer to Figure 3 The thickness of the conductive paper 40 is 0.05 mm-0.1 mm.

[0031] Further, refer to Figure 3 There are four conductive papers 40 arranged on the back of the backlight iron frame 31. The four conductive papers 40 are respectively located on the four sides of the backlight iron frame 31. The four conductive papers 40 respectively connect the four sides of the cover plate 10 with the backlight iron frame 31. Conductive ink 11 is screen-printed on the back of the cover plate 10, and the conductive ink 11 is connected to the backlight iron frame 31 through the conductive paper 40, so that the cover plate 10 and the backlight iron frame 31 are connected, and the conductive ink 11 contacts the display screen 20 to guide the static electricity on the display screen 20. The static electricity is conducted to the backlight iron frame 31 through the conductive paper 40 and released, so as to avoid the problem of static electricity accumulating on the display screen 20 and causing the display screen 20 to display white.

[0032] Reference Figure 3 The display screen 20 is bound with an FPC 21, one end of the FPC 21 is bound to the display screen 20, and the other end of the FPC 21 is bent and attached to the back of the backlight iron frame 31. The conductive paper 40 located at the lower side of the backlight iron frame 31 covers the FPC 21, and the conductive paper 40 covers the component area of ​​the FPC 21, so that the static electricity generated on the FPC 21 is conducted to the backlight iron frame 31 for release.

[0033] Reference Figure 4 The back of the cover plate 10 is screen-printed with BM ink 50 and reverse cover ink 60 in sequence, and the conductive ink 11 is screen-printed on the side of the reverse cover ink 60 away from the BM ink 50 .

[0034] Reference Figure 4 A coating layer 70 is disposed on the front side of the cover plate 10 . The coating layer 70 is an AR film layer, an AG film layer and an AF film layer stacked in sequence. The coating layer 70 makes the performance and display effect of the cover plate 10 better.

[0035] 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 solving the problem of whitening of a display screen due to static electricity, characterized in that: include: A cover plate (10), a display screen (20) and a backlight module (30) are arranged in sequence, the back side of the cover plate (10) being screen-printed with conductive ink (11), and the back side of the backlight module (30) being affixed with conductive paper (40) for connecting the conductive ink (11) and the backlight module (30).

2. A display module for solving the problem of whitening of a display screen due to static electricity according to claim 1, characterized in that: The back side of the backlight module (30) is a backlight iron frame (31), and the cover plate (10) and the backlight iron frame (31) are electrically connected via the conductive paper (40).

3. A display module for solving the problem of whitening of a display screen due to static electricity according to claim 2, characterized in that: The size of the cover plate (10) is larger than the size of the display screen (20); the conductive ink (11) is screen-printed in an area of ​​the cover plate (10) that exceeds the display screen (20); and the conductive ink (11) is screen-printed along a circle around the periphery of the display screen (20) to a side of the cover plate (10) facing the display screen (20).

4. A display module for solving the problem of whitening of a display screen due to static electricity according to claim 3, characterized in that: The thickness of the conductive ink (11) is 5um-12um.

5. A display module for solving the problem of whitening of a display screen due to static electricity according to claim 4, characterized in that: A portion of the conductive paper (40) is attached to the conductive ink (11) on the back of the cover plate (10), and another portion of the conductive paper (40) is attached to the backlight iron frame (31).

6. A display module for solving the problem of whitening of a display screen due to static electricity according to claim 5, characterized in that: The thickness of the conductive paper (40) is 0.05 mm-0.1 mm.

7. A display module for solving the problem of whitening of a display screen due to static electricity according to claim 6, characterized in that: There are four sheets of conductive paper (40), and the four sheets of conductive paper (40) are respectively located on four sides of the backlight iron frame (31). The four sheets of conductive paper (40) respectively connect the four sides of the cover plate (10) with the backlight iron frame (31).

8. A display module for solving the problem of whitening of a display screen due to static electricity according to claim 7, characterized in that: The display screen (20) is bound with an FPC (21), one end of the FPC (21) is bound to the display screen (20), and the other end of the FPC (21) is bent and attached to the back side of the backlight iron frame (31).

9. A display module for solving the problem of whitening of a display screen due to static electricity according to claim 8, characterized in that: The conductive paper (40) located at the lower side of the backlight iron frame (31) covers the FPC (21).

10. A display module for solving the problem of whitening of a display screen due to static electricity according to claim 1, characterized in that: The back side of the cover plate (10) is screen-printed with BM ink (50) and reverse cover ink (60) in sequence, and the conductive ink (11) is screen-printed on a side of the reverse cover ink (60) away from the BM ink (50).

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