Anti-static liquid crystal display (LCD) module

Abstract

The utility model relates to the technical field of liquid crystal display modules, in particular to an anti-static liquid crystal display (LCD) module which comprises a display portion and a backlight portion, and the display portion comprises an LCD, an upper polaroid, a lower polaroid, a flexible printed circuit (FPC) and a driving chip. The upper polaroid is arranged on the LCD, and the cover plate is arranged on the upper polaroid; the lower polaroid is arranged on the backlight part, and the LCD is arranged on the lower polaroid; a terminal area is formed between one end of the LCD and one end of the cover plate; the FPC is arranged in the terminal area; the terminal area is internally provided with an elastic cushion block which is used for preventing the LCD from deforming, and the driving chip is arranged in the cushion block; and the anti-static structure is used for guiding out static electricity on the LCD. According to the anti-static LCD module, an anti-static structure for guiding out static electricity on the LCD is adopted, the anti-static effect of the LCD module is effectively improved, the display quality of a display screen is prevented from being influenced by the static electricity, and therefore the anti-static capacity of the LCD module is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid crystal display modules, in particular to an anti-static LCD liquid crystal display module. Background Art

[0002] The main components of the display module are the backlight and the display. The display usually includes an upper polarizer, LCD, a lower polarizer, IC, FPC, CG or TP. The backlight includes an integrated iron-glue frame, a reflector, a light guide plate, a film material (upper light-enhancing film, lower light-enhancing film, and a diffusion film), and a black double-sided light-shielding adhesive. The assembly process of the display film group is briefly described as follows: first assemble the upper polarizer, LCD, lower polarizer, IC, and FPC into FOG, then assemble the integrated iron-glue frame, reflector, light guide plate, film material, and black double-sided light-shielding adhesive into the backlight, then assemble CG, touch sensor, touch IC, and touch FPC into TP, and then assemble FOG and CG / TP with the backlight after bonding. LCD is a display box composed of two glass circuit boards, CF and TFT. IC and FPC need to be bound to the LCD and connected to the circuit inside the LCD screen to drive the LCD display. Therefore, an extra area is needed outside the LCD box for connecting IC and FPC. This single-layer area is called LCD terminal in the industry.

[0003] At present, LCD modules are widely used in various electronic devices. Static electricity problems usually occur on LCD modules. However, the anti-static effect of existing LCD modules is mostly unsatisfactory. The existence of static electricity has a significant impact on the quality of LCD modules. For example, static electricity can easily pass through the edge of the LCD module to the inside of the LCD module, which will not only interfere with the display effect of the LCD module, but also directly cause the display screen to fail in severe cases. Therefore, anti-static ability is an issue that needs to be considered during the production and manufacturing process of LCD modules. Utility Model Content

[0004] The purpose of the utility model is to provide an anti-static LCD liquid crystal display module to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An anti-static LCD liquid crystal display module comprises a display unit and a backlight unit, wherein the display unit comprises an LCD, an upper polarizer, a lower polarizer, an FPC and a driving chip;

[0007] The upper polarizer is mounted on the LCD, and the cover plate is mounted on the upper polarizer;

[0008] The lower polarizer is mounted on the backlight, and the LCD is mounted on the lower polarizer;

[0009] A terminal area is formed between one end of the LCD and one end of the cover plate;

[0010] The FPC is installed in the terminal area;

[0011] The terminal area is provided with an elastic pad for preventing the LCD from deforming, and the driving chip is installed in the pad;

[0012] It also includes an anti-static structure for dissipating static electricity on the LCD.

[0013] Furthermore, the antistatic structure includes a conductive metal or silver paste installed on the inner side of the cover plate, the pad is a conductive foam, and the conductive metal or silver paste is connected to the conductive foam.

[0014] Furthermore, the conductive foam is in a frame-shaped structure and is arranged around the four sides of the LCD.

[0015] Furthermore, the antistatic structure includes a conductive tape, the backlight unit includes an iron frame, one end of the conductive tape is connected to the LCD, and the other end is connected to the iron frame.

[0016] Furthermore, the conductive tape is coated with an insulating layer.

[0017] Furthermore, the cushion block has an inner cavity, and the inner cavity is connected to the outside of the cushion block through a channel.

[0018] Furthermore, the channel includes a tapered section a and a straight section b, wherein the end of the tapered section a with a larger diameter is connected to the inner cavity, and the end of the tapered section a with a smaller diameter is connected to the straight section b.

[0019] Furthermore, the inner cavity is elliptical, and the channels are symmetrically distributed around the center of the inner cavity.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] The utility model adopts an anti-static structure for conducting static electricity on the LCD, so that the LCD6 (the TFT on it) is connected with the conductive metal or silver paste, and finally the static electricity can be conducted through the ground wire of the FPC, thereby conducting the static electricity of the LCD into the ground environment, so that the static electricity cannot enter (into the TFT) from the surface of the LCD6, effectively improving the anti-static effect of the LCD module, avoiding the display quality of the display screen being affected by static electricity, and thus improving the anti-static ability of the LCD module.

[0022] The utility model provides an elastic cushion block for preventing LCD deformation in the terminal area; the cushion block is elastic, and when the LCD is subjected to external force, the cushion block will be pressed between the cover plate and the LCD and compressed to deform, providing a buffering effect for the LCD, preventing the LCD from being deformed and damaged under the action of external force, and improving the anti-compression and breakage ability of the display module.

[0023] In the utility model, the end surface of the pad in contact with the LCD has a protrusion, and a protrusion gap is formed between adjacent protrusions. The protrusion gap can meet the actual production or use conditions, and the pad and the LCD can be pasted by optical glue, and the protrusion gap can retain more glue to improve the pasting effect.

[0024] The utility model can realize the quick disassembly or installation between the cushion block and the cover plate through the clamping structure, and changes the method of gluing the cover plate and the upper polarizer through optical glue (OCA glue) in the prior art. The purpose of this is to avoid taking a lot of effort to disassemble the cover plate and the upper polarizer when inspecting the display part or the backlight part, which may also damage the cover plate, the upper polarizer or other components, and realize simple and convenient disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic structural diagram of Example 1 of the utility model.

[0026] Figure 2 The utility model is a schematic diagram of the specific structure of the installation pad in the terminal area.

[0027] Figure 3 This is a schematic structural diagram of Example 2 of the utility model.

[0028] In the figure: 1-cover plate, 2-upper polarizer, 3-first OCA glue, 4-second OCA glue, 5-buffer gap, 6-LCD, 7-lower polarizer, 8-terminal area, 9-FPC, 10-driving chip, 11-pad, 12-inner cavity, 13-channel, 14-gap, 15-mounting groove, 16-protrusion, 17-groove, 18-protrusion, 19-iron frame, 20-upper brightness enhancement sheet, 21-lower brightness enhancement sheet, 22-diffuser, 23-light guide plate, 24-reflector, 25-light-shielding double-sided tape, 26-conductive metal or silver paste, 27-conductive tape, 28-insulating layer. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] In the description of the present invention, it should be noted that the terms "upper end", "lower end", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "sleeved", "sleeved", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0032] Example 1

[0033] See also Figure 1 to Figure 2 , the utility model provides a technical solution:

[0034] An anti-static LCD liquid crystal display module, comprising a display unit and a backlight unit, wherein the display unit comprises an LCD 6, an upper polarizer 2, a lower polarizer 7, an FPC 9 and a driving chip 10;

[0035] The upper polarizer 2 is mounted on the LCD 6, and the cover plate 1 is mounted on the upper polarizer 2;

[0036] The lower polarizer 7 is mounted on the backlight, and the LCD 6 is mounted on the lower polarizer 7;

[0037] A terminal area 8 is formed between one end of the LCD 6 and one end of the cover plate 1;

[0038] The FPC 9 is installed in the terminal area 8;

[0039] It also includes an anti-static structure for conducting static electricity on LCD6.

[0040] As is known to all, LCD6 is formed by laminating a CF and a TFT glass substrate.

[0041] Specifically, the anti-static structure includes a conductive metal or silver paste 26 installed on the inner side of the cover plate 1, and the pad 11 is a conductive foam, and the conductive metal or silver paste 26 is connected to the conductive foam. The conductive foam is a frame-shaped structure and is arranged around the four sides of LCD6. The conductive foam allows LCD6 (the TFT on it) to be connected to the conductive metal or silver paste 26, and finally the static electricity can be discharged through the ground wire of FPC9 (connected to the conductive foam or conductive metal or silver paste, and when considering the path, it is generally connected to the conductive foam), thereby introducing the static electricity of LCD6 into the ground environment, so that the static electricity cannot enter (to the TFT) from the surface of LCD6, effectively improving the anti-static effect of the LCD module, avoiding the display quality of the display screen affected by static electricity, and thus improving the anti-static ability of the LCD.

[0042] In this embodiment, the conductive metal or silver paste 26 is laid on the inner side of the cover plate 1. On the one hand, it can prevent static electricity from affecting the backlight. On the other hand, since there is a lower polarizer 7 and a light-shielding double-sided tape 25 between LCD6 and the iron frame 19 of the backlight, the path to introduce static electricity into the iron frame 19 avoiding the lower polarizer 7 and the light-shielding double-sided tape 25 is longer, and the FPC9 is also far away from the iron frame 19, so the path for the static electricity of LCD6 can be shortened.

[0043] When the LCD 6 is subjected to external force, its periphery is easily deformed and damaged toward the cover plate 1 or the backlight part, thereby causing damage to the LCD 6. The working principle of the utility model is to provide support around the LCD 6 to provide a buffering effect when it is subjected to force, thereby avoiding damage to the LCD 6 caused by deformation and damage around the LCD 6.

[0044] Specifically, the terminal area 8 is provided with an elastic pad 11 for preventing the LCD 6 from deforming; the pad 11 is elastic, and when the LCD 6 is subjected to an external force, the pad 11 will be pressed between the cover plate 1 and the LCD 6 and compressed and deformed, providing a buffering effect for the LCD 6. In this embodiment, the pad 11 is an elastic conductive foam.

[0045] Specifically, the cushion block 11 has an inner cavity 12, and the inner cavity 12 is connected to the outside of the cushion block 11 through a channel 13. Since the cushion block 11 is made of conductive foam and has elasticity, in order to cooperate with the compression of the foam when under pressure, thereby providing a buffering effect for the LCD 6, the inner cavity 12 is reserved, so that when squeezed, the inner cavity 12 provides a compressed space, so that the cushion block 11 has a better buffering effect.

[0046] Since the extrusion is completed in a short time, a channel 13 is reserved in the inner cavity 12, through which the gas in the inner cavity 12 can be discharged outward during the extrusion, thereby changing the inner cavity 12. The channel 13 includes a conical section a and a straight section b. The end of the conical section a with a large diameter is connected to the inner cavity 12, and the end of the conical section a with a small diameter is connected to the straight section b. The inner cavity 12 is elliptical, and the channels 13 are symmetrically distributed around the center of the inner cavity 12. The conical section a can allow the inner cavity 12 to exhaust quickly, so that the cushion block 11 has a compression modulus and achieves a better buffering effect, while the straight section b exhausts smoothly and ensures that the cushion block 11 has a better supporting effect.

[0047] Specifically, the end surface of the pad 11 in contact with the LCD 6 has a protrusion 18, and a protrusion gap is formed between adjacent protrusions 18. The protrusion gap can meet the actual production or use conditions, and the pad 11 and the LCD 6 can be pasted by optical glue, and the protrusion gap can retain more glue to improve the pasting effect.

[0048] The driver chip 10 is installed in the pad 11, and the pad 11 provides a protection area for the driver chip 10. The driver chip 10 has a gap 14 from the LCD 6. This can also reduce the squeezing of the driver chip 10 when the LCD 6 is subjected to external force, thereby reducing the probability of damage to the driver chip 10.

[0049] Specifically, the pad 11 and the cover plate 1 are detachably mounted through a snap-fit ​​structure, and the snap-fit ​​structure includes a protrusion 16 in the mounting groove 15 on the cover plate 1, and a groove 17 opened on the side of the pad 11 and matched with the protrusion 16. The snap-fit ​​structure can realize the rapid disassembly or installation between the pad 11 and the cover plate 1, and change the way of sticking the cover plate 1 and the upper polarizer 2 by optical glue (OCA glue) in the prior art. The purpose of doing so is to avoid taking great effort to disassemble the cover plate 1 and the upper polarizer 2 when repairing the display part or the backlight part, and it may also damage the cover plate 1, the upper polarizer 2 or other components, so as to realize simple and convenient disassembly.

[0050] Specifically, the upper polarizer 2 and the two ends of the LCD 6 are adhered by OCA glue 3, and a buffer gap 5 is formed between the two ends of the OCA glue 3. Figure 1 As shown, this method can not only fix the upper polarizer 2 and LCD 6, but also the OCA glue plays a supporting role between the two. The buffer gap 5 formed makes the amount of OCA glue relatively small, and will not affect the imaging effect of LCD 6.

[0051] OCA glue 3 has strong adhesion, high tensile strength, weather resistance, vibration resistance, moisture resistance and adaptability to large changes in temperature, which can improve the display module product's ability to resist crushing.

[0052] Optionally, according to actual production or use conditions, the cover plate 1 and the upper polarizer 2 are adhered together by OCA glue 3 .

[0053] The backlight part includes an iron frame 19 and a reflective sheet 24, a light guide plate 23, a diffuser 22, a lower brightening sheet 21 and an upper brightening sheet 20 which are sequentially installed in the iron frame 19 from bottom to top. The upper end surface of the upper brightening sheet 20 is provided with a light-shielding double-sided adhesive tape 25, and the lower end surface of the LCD 6 is attached to the light-shielding double-sided adhesive tape 25.

[0054] In the present invention, when the LCD 6 is subjected to an external force, the elastic cushion block 11 is compressed and deformed to provide a buffering effect for the LCD, thereby preventing the LCD from being deformed and damaged under the action of the external force.

[0055] Example 2

[0056] See also Figure 3 The present utility model provides a technical solution, which is basically the same as that of embodiment 1, except that:

[0057] The antistatic structure includes a conductive tape 27 , and the backlight unit includes an iron frame 19 . One end of the conductive tape 27 is connected to the LCD 6 , and the other end is connected to the iron frame 19 . The conductive tape 27 is coated with an insulating layer 28 .

[0058] In this embodiment, the LCD 6 is connected to the upper iron frame 19 through the conductive tape 27, and the static electricity is discharged by connecting the iron frame 19 through the ground wire of the FPC 9, which effectively improves the anti-static effect of the LCD module, avoids the display quality of the display screen being affected by static electricity, and thus improves the anti-static ability of the LCD.

[0059] The present utility model, the undescribed parts are prior art.

[0060] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anti-static LCD liquid crystal display module, characterized in that: It comprises a display unit and a backlight unit, wherein the display unit comprises an LCD (6), an upper polarizer (2), a lower polarizer (7), an FPC (9) and a driving chip (10); the upper polarizer (2) is mounted on the LCD (6), and the cover plate (1) is mounted on the upper polarizer (2); The lower polarizer (7) is mounted on the backlight portion, and the LCD (6) is mounted on the lower polarizer (7); A terminal area (8) is formed between one end of the LCD (6) and one end of the cover plate (1); The FPC (9) is installed in the terminal area (8); The terminal area (8) is provided with an elastic cushion block (11) for preventing the LCD (6) from deforming, and the driving chip (10) is installed in the cushion block (11); It also includes an anti-static structure for conducting static electricity on the LCD (6).

2. The anti-static LCD display module according to claim 1, characterized in that: The antistatic structure comprises a conductive metal or silver paste (26) installed on the inner side of the cover plate (1); the pad (11) is a conductive foam; the conductive metal or silver paste (26) is connected to the conductive foam.

3. The anti-static LCD display module according to claim 2, characterized in that: The conductive foam is in a frame-shaped structure and is arranged around the four sides of the LCD (6).

4. The anti-static LCD display module according to claim 1, characterized in that: The antistatic structure comprises a conductive tape (27), the backlight unit comprises an iron frame (19), one end of the conductive tape (27) is connected to the LCD (6), and the other end is connected to the iron frame (19).

5. The anti-static LCD display module according to claim 4, characterized in that: The conductive tape (27) is coated with an insulating layer (28).

6. The anti-static LCD display module according to claim 1, characterized in that: The cushion block (11) has an inner cavity (12), and the inner cavity (12) is connected to the outside of the cushion block (11) through a channel (13).

7. An anti-static LCD display module as claimed in claim 6, characterized in that: The channel (13) comprises a tapered section a and a straight section b. The end of the tapered section a with a larger diameter is connected to the inner cavity (12), and the end of the tapered section a with a smaller diameter is connected to the straight section b.

8. The anti-static LCD display module according to claim 6, characterized in that: The inner cavity (12) is elliptical in shape, and the channels (13) are symmetrically distributed around the center of the inner cavity (12).

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