CN218917862U

CN218917862U - Liquid crystal display screen capable of improving antistatic capacity

Info

Publication number: CN218917862U
Application number: CN202320073938.0U
Authority: CN
Inventors: 李春平; 张锦炀; 代仕星; 李达明; 康飞旺
Original assignee: Xinli Photoelectric Renshou Co Ltd
Current assignee: Xinli Photoelectric Renshou Co Ltd
Priority date: 2023-01-10
Filing date: 2023-01-10
Publication date: 2023-04-25
Anticipated expiration: 2033-01-10

Abstract

The utility model discloses a liquid crystal display screen capable of improving antistatic capability, because the upper surface of a lower substrate is not only provided with a first peripheral ground wire around a display area, but also provided with a second peripheral ground wire around an IC binding area, and both the first peripheral ground wire and the second peripheral ground wire are electrically connected with a ground wire binding PAD of an FPC binding area. Even if static enters the IC through a gap between the cover plate and the backlight module, the static can be firstly beaten to the second peripheral ground wire and discharged to the ground wire binding PAD through the second peripheral ground wire, so that the static is discharged, the IC on the lower substrate is protected from being damaged by the static, even if the IC has the antistatic capability of 3kv, the IC can not be damaged, the integral antistatic capability of the liquid crystal display screen is improved, the phenomenon that the liquid crystal display screen cannot normally display is avoided, and the probability of defective products of the liquid crystal display screen is reduced, and the production and manufacturing cost of the liquid crystal display screen is also greatly reduced.

Description

Liquid crystal display screen capable of improving antistatic capacity

Technical Field

The utility model relates to the technical field of liquid crystal display, in particular to a liquid crystal display screen capable of improving antistatic capability.

Background

Static electricity is ubiquitous throughout the electronic industry, and is a ubiquitous stealth killer. For mobile phone type liquid crystal display screens, the loss caused by static electricity is very huge every year, and the service life and the use experience of the product are also greatly influenced. Therefore, the current mobile phone LCD industry is very necessary for static electricity protection. As an important component of the whole machine, the liquid crystal display screen can not be used if being damaged by static electricity.

The liquid crystal display panel is mainly composed of a lower substrate and an upper substrate, liquid crystal sandwiched between the lower substrate and the upper substrate, and the like. An IC binding region and an FPC binding region are arranged in a single-layer region at the lower end of the lower substrate, the IC binding region is used for binding an IC on the lower substrate, and the FPC binding region is used for binding an FPC on the lower substrate. The off-duty single-layer area of the lower substrate is also distributed with dense various signal wires and power wires.

In general, the design of the lower substrate designs a circle of peripheral ground wire at the outermost periphery of the lower substrate, and is connected with the ground wire pad in the binding pad of the FPC binding area. When the periphery of the lower substrate is impacted by static electricity, the static electricity is firstly beaten to the peripheral ground wire and discharged to the ground wire of the FPC through the diversion of the peripheral ground wire, and finally the FPC is connected with the backlight iron frame of the backlight module through the conductive double-sided adhesive tape after being bent, so that the static electricity is discharged to the backlight iron frame of the backlight module. The signal wire and the power wire on the lower substrate are protected from being damaged by static electricity.

However, since the voltage is often high instantaneously when static electricity occurs, and the requirements of the end customer on static electricity experiments are also becoming more and more strict, 20kv of static electricity test is usually required to pass. Because the overall structure design of the existing liquid crystal display screen is limited, static electricity can be directly applied to the IC through gaps between the cover plate and the backlight module, and the IC is very easy to damage due to the antistatic capacity of 3kv, so that the liquid crystal display screen cannot be normally displayed, the probability of defective products of the liquid crystal display screen is increased, the production and manufacturing cost of the liquid crystal display screen are also greatly increased, the product competitiveness of the liquid crystal display screen is reduced, and the increasing quality requirements of enterprises cannot be met.

Disclosure of Invention

The utility model aims to solve the technical problem of how to prevent static electricity from damaging an IC while preventing static electricity from damaging a number wiring and a power wiring, thereby improving the overall antistatic capability of a liquid crystal display screen.

The technical problems to be solved by the utility model are realized by the following technical scheme:

in order to solve the technical problems, the utility model provides a liquid crystal display screen capable of improving antistatic capability, which comprises a lower substrate and an upper substrate arranged above the lower substrate, wherein the lower substrate is longer than the upper substrate and extends outwards to form a step, an IC binding area and an FPC binding area are arranged on the upper surface of the lower substrate positioned at the step, a first peripheral ground wire is arranged on the upper surface of the lower substrate around a display area, a second peripheral ground wire is arranged on the upper surface of the lower substrate around the IC binding area, and the first peripheral ground wire and the second peripheral ground wire are electrically connected with a ground wire binding PAD of the FPC binding area.

As a preferred implementation manner of the liquid crystal display screen capable of improving the antistatic capability, the IC binding region is bound with the driving IC, the FPC binding region is bound with the FPC, the FPC is provided with the copper leakage position, the lower polarizer is arranged below the lower substrate, the backlight module is arranged below the lower polarizer, the backlight module comprises a backlight iron frame, and the copper leakage position is electrically connected with the lower surface of the backlight iron frame.

As a preferred implementation mode of the liquid crystal display screen with improved antistatic capability, the backlight iron frame comprises a bottom plate and side walls extending upwards from the edges of the bottom plate, and the backlight module further comprises a reflecting sheet, a light guide plate and an optical film group which are sequentially overlapped and arranged on the upper surface of the bottom plate from bottom to top, wherein at least one elastic block is arranged between the light guide plate and the side walls.

As an optimal implementation mode of the liquid crystal display screen with the anti-static capacity improved, at least one protruding block is arranged on two sides of the elastic block.

As an preferable implementation mode of the liquid crystal display screen with improved antistatic capability, the elastic block is provided with shock absorption holes between adjacent convex blocks.

As a preferred implementation mode of the liquid crystal display screen capable of improving the antistatic capability, grooves are formed in the inner wall of the damping hole close to one side of the protruding block, and damping devices are arranged between the adjacent grooves.

As a preferred implementation mode of the liquid crystal display screen with improved antistatic capability, the damping device is a spring or two magnets with the same poles opposite to each other.

As a preferred implementation mode of the liquid crystal display screen with improved antistatic capability, the upper surface of the light guide plate is provided with at least one glue column, the optical film group is provided with a positioning hole corresponding to the glue column, and the optical film group is sleeved on the glue column.

As an preferable implementation mode of the liquid crystal display screen with improved antistatic capability, the upper surface of the light guide plate is provided with a ring groove surrounding the rubber column at the joint of the light guide plate and the rubber column.

As a preferred embodiment of the liquid crystal display screen for improving antistatic capability provided by the utility model, the cross section of the ring groove is square, circular arc or triangle.

The utility model has the following beneficial effects:

because the upper surface of the lower substrate is not only provided with the first peripheral ground wire around the display area, but also provided with the second peripheral ground wire around the IC binding area, the first peripheral ground wire and the second peripheral ground wire are electrically connected with the ground wire binding PAD of the FPC binding area. Even if static enters the IC through a gap between the cover plate and the backlight module, the static is firstly beaten to a second peripheral ground wire and is discharged to the ground wire binding PAD through the second peripheral ground wire, so that the static is discharged, the IC on the lower substrate is protected from being damaged by the static, even if the IC has the antistatic capability of 3kv, the IC is not damaged, the integral antistatic capability of the liquid crystal display is improved, the phenomenon that the liquid crystal display cannot normally display is avoided, the probability of defective products of the liquid crystal display is reduced, and the production and manufacturing cost of the liquid crystal display is greatly reduced, so that the product competitiveness of the liquid crystal display is improved, and the increasing quality requirements of enterprises are met.

Drawings

For a clearer description of the solution in the present application, a brief description will be given below of the drawings that are needed in the description of the embodiments, it being obvious that the drawings in the following description are some embodiments of the present application, and that other drawings may be obtained from these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a liquid crystal display screen with improved antistatic capability according to the present utility model.

Fig. 2 is an enlarged view at a in fig. 1.

Fig. 3 is a side view of fig. 1.

Fig. 4 is a schematic structural diagram of the backlight module in fig. 3.

Fig. 5 is a schematic diagram showing a modified structure of the elastic block in fig. 4.

Fig. 6 is a schematic diagram of an improved structure of the light guide plate and the optical film set in fig. 4.

Fig. 7 is a schematic diagram of a further modification of fig. 6.

Reference numerals illustrate:

a lower substrate 1; an upper substrate 2; an IC binding area 11; FPC binding area 12; a first peripheral ground line 13; a second peripheral ground line 14; an FPC3; a lower polarizer 4; a backlight module 100; a backlight iron frame 5; a bottom plate 51; a side wall 52; a reflection sheet 6; a light guide plate 7; an optical film group 8; an elastic block 9; a bump 91; a damper hole 92; a groove 93; a damper 94; a glue column 71; ring groove 72.

Detailed Description

In order that those skilled in the art will better understand the present utility model, a technical solution in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", and "a third" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

The utility model provides a liquid crystal display screen capable of improving antistatic capacity, which comprises a lower substrate and an upper substrate arranged above the lower substrate, wherein the lower substrate is longer than the upper substrate and extends outwards to form a step, an IC binding area and an FPC binding area are arranged on the upper surface of the lower substrate positioned at the step, a first peripheral ground wire is arranged on the upper surface of the lower substrate around a display area, a second peripheral ground wire is arranged on the upper surface of the lower substrate around the IC binding area, and the first peripheral ground wire and the second peripheral ground wire are electrically connected with a ground wire binding PAD of the FPC binding area.

In order to better understand the technical solutions of the present application, the following description will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings. The present utility model is described in detail below with reference to the drawings and the embodiments, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

Example 1

Referring to fig. 1 and 2, the liquid crystal display for improving antistatic capability provided by the present utility model includes a lower substrate 1 and an upper substrate 2, the upper substrate 2 is disposed above the lower substrate 1, the lower substrate 1 is longer than the upper substrate 2 and extends outwards, a step is formed at the outwards extending portion, an IC bonding area 11 and an FPC bonding area 12 are disposed at the lower end portion of the upper surface of the lower substrate 1 at the step, the IC bonding area 11 is disposed at the top of the FPC bonding area 12, a first peripheral ground wire 13 is disposed on the upper surface of the lower substrate 1 around the display area, the first peripheral ground wire 13 is disposed at the edge of the non-display area, a second peripheral ground wire 14 is disposed on the upper surface of the lower substrate 1 around the IC bonding area 11, and both the first peripheral ground wire 13 and the second peripheral ground wire 14 are electrically connected with a ground wire bonding PAD of the FPC bonding area 12. Static electricity at the IC binding region 11 is also led out, and static electricity is prevented from damaging the IC.

Referring to fig. 1 to 3, further, a driving IC is bound on the IC binding region 11, an FPC3 is bound on the FPC binding region 12, a copper leakage position is provided on the FPC3, a lower polarizer 4 is provided below the lower substrate 1, a backlight module 100 is provided below the lower polarizer 4, the backlight module 100 includes a backlight iron frame 5, the copper leakage position of the FPC3 is electrically connected with the lower surface of the backlight iron frame 5, so that static electricity is led out to the backlight iron frame 5 through the copper leakage position of the FPC3, and the backlight iron frame 5 leads out static electricity through a ground wire, thereby avoiding static electricity from damaging a liquid crystal display screen.

Example 2

Referring to fig. 4, as a further optimization scheme of embodiment 1, in this embodiment, the backlight iron frame 5 includes a bottom plate 51 and a side wall 52, the side wall 52 is formed by extending upward from the edge of the bottom plate 51, the backlight module 100 further includes a reflective sheet 6, a light guide plate 7 and an optical film set 8 sequentially stacked on the upper surface of the bottom plate 51 from bottom to top, at least one elastic block 9 is disposed between the light guide plate 7 and the side wall 52, the elastic block 9 is disposed to firmly abut the light guide plate 7 on the elastic block 9, so as to buffer the impact force of the light guide plate 7 on the lower frame, to avoid the impact of the light guide plate 7 with the lower frame, and to improve the service life of the light guide plate 7.

Further, at least one bump 91 is disposed on two sides of the elastic block 9, and the bump 91 is directly abutted to the light guide plate 7 and the side wall 52 of the lower frame, so that the elastic block 9 can be aligned to the light guide plate 7 and the side wall 52, and the buffer performance of the elastic block 9 is further improved.

Referring to fig. 5, with the increase of the service life of the elastic block 9, the elastic block 9 also weakens with aging, and in order to increase the capability of the elastic block 9 for buffering the impact force and increase the service life of the elastic block 9, the elastic block 9 is provided with a shock absorbing hole 92 between adjacent protrusions 91, in this embodiment, the shock absorbing hole 92 is a square hole, when the light guide plate 7 impacts in the direction of the elastic block 9, the elastic block 9 will be concavely deformed in the direction of the shock absorbing hole 92 to absorb the impact force of the light guide plate 7, thereby further achieving the purposes of shock absorption and noise reduction. It should be noted that the shock absorbing hole 92 may be either a through hole or a blind hole, or may be an inner hole built in the elastic block 9, which falls within the protection scope of the present utility model. The through holes are selected in the embodiment, so that the manufacturing is easy and the production cost is low. The shape of the damper hole 92 may be square or round, and may be selected according to the actual situation, and is not limited thereto.

In order to further increase the capability of the elastic block 9 for buffering the impact force, grooves 93 are formed in the inner wall of the damping hole 92 close to one side of the protruding block 91, and only two protruding blocks 91 are arranged in the embodiment, so that only two protruding blocks 91 and a plurality of grooves 93 can be formed in the grooves 93 according to practical situations, damping devices 94 are arranged between the adjacent grooves 93, the capability of the elastic block 9 for buffering the impact force can be further increased by utilizing the damping devices 94, the impact force of the light guide plate 7 is absorbed, and the purposes of damping and noise reduction are further achieved.

Further, the damping device 94 is a spring or any one of two magnets with opposite same poles, and the capability of the elastic block 9 for buffering the impact force is further increased by utilizing the elastic force of the spring or the repulsive force generated by the two magnets with opposite same poles; the springs and the magnets are standard commercial products which can be purchased in the market, special customization is not needed, the purchasing cost is low, the springs and the magnets can be replaced at any time, and the cost performance is high.

Example 3

Referring to fig. 6, as a further optimization scheme of embodiment 2, in this embodiment, at least one glue post 71 is disposed on the upper surface of the light guide plate 7, preferably four glue posts are uniformly distributed at four corners of the light guide plate 7, positioning holes corresponding to the glue posts 71 are formed in the optical film set 8, and the optical film set 8 is sleeved on the glue posts 71. The positioning holes on the optical film group 8 can be positioned and fixed through the glue column 71, the positioning holes do not need to be positioned through an auxiliary jig, the assembly process is simple, the assembly precision is high, and the production cost of the backlight module 100 can be reduced.

Referring to fig. 7, when the number of the molds is large, the molds at the glue posts 71 will be worn to a certain extent, which will result in a fillet being formed between the light guide plate 7 and the glue posts 71, and when the fillet exists, the optical film set 8 will interfere with the fillet, so that the optical film set 8 cannot be installed. Therefore, preferably, the upper surface of the light guide plate 7 is provided with a ring groove 72 surrounding the glue column 71 at the joint of the light guide plate 7 and the glue column 71, when the die is worn, only the ring groove 72 is worn, so that interference with other parts caused by the fact that a round angle is generated at the edge angle of the glue column 71 when the die is worn is avoided, and the assembly precision is affected, thereby improving the yield and the assembly efficiency.

Preferably, the cross section of the ring groove 72 is square, circular arc or triangle, but not limited to, the square, circular arc and triangle have simple structure and easy manufacture; the assembly precision is not affected after the die is worn.

Preferably, the glue post 71 and the light guide plate 7 are integrally formed, so that the installation steps are reduced, the installation cost is reduced, and the competitiveness of the product is improved.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

It is apparent that the embodiments described above are only some embodiments of the present application, but not all embodiments, the preferred embodiments of the present application are given in the drawings, but not limiting the patent scope of the present application. This application may be embodied in many different forms, but rather, embodiments are provided in order to provide a more thorough understanding of the present disclosure. Although the present application has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing, or equivalents may be substituted for elements thereof. All equivalent structures made by the specification and the drawings of the application are directly or indirectly applied to other related technical fields, and are also within the protection scope of the application.

Claims

1. The utility model provides an improve liquid crystal display of antistatic ability, its characterized in that includes lower base plate (1) and sets up upper base plate (2) of lower base plate (1) top, lower base plate (1) are longer than upper base plate (2) and outwards stretch out and be formed with the step, be located the upper surface of lower base plate (1) of step department is provided with IC binding area (11) and FPC binding area (12), the upper surface of lower base plate (1) is provided with first peripheral ground wire (13) around the display area, the upper surface of lower base plate (1) is provided with second peripheral ground wire (14) around IC binding area (11), first peripheral ground wire (13) with second peripheral ground wire (14) all with the ground wire binding PAD electricity of FPC binding area (12) is connected.

2. The liquid crystal display screen with improved antistatic capacity according to claim 1, wherein a driving IC is bound on the IC binding region (11), an FPC (3) is bound on the FPC binding region (12), a copper leakage position is arranged on the FPC (3), a lower polarizer (4) is arranged below the lower substrate (1), a backlight module (100) is arranged below the lower polarizer (4), the backlight module (100) comprises a backlight iron frame (5), and the copper leakage position is electrically connected with the lower surface of the backlight iron frame (5).

3. The liquid crystal display screen with improved antistatic ability according to claim 2, wherein the backlight iron frame (5) comprises a bottom plate (51) and a side wall (52) extending upwards from the edge of the bottom plate (51), the backlight module (100) further comprises a reflecting sheet (6), a light guide plate (7) and an optical film group (8) which are sequentially overlapped and arranged on the upper surface of the bottom plate (51) from bottom to top, and at least one elastic block (9) is arranged between the light guide plate (7) and the side wall (52).

4. A liquid crystal display according to claim 3, wherein at least one bump (91) is provided on both sides of the elastic block (9).

5. The liquid crystal display panel with improved antistatic ability according to claim 4, wherein the elastic block (9) is provided with shock absorbing holes (92) between adjacent bumps (91).

6. The liquid crystal display screen with improved antistatic ability according to claim 5, wherein grooves (93) are formed on the inner wall of the shock absorbing hole (92) near one side of the bump (91), and shock absorbing devices (94) are arranged between adjacent grooves (93).

7. The liquid crystal display of claim 6, wherein the shock absorbing means (94) is a spring or two magnets with the same poles opposite each other.

8. A liquid crystal display screen with improved antistatic ability according to claim 3, wherein at least one glue column (71) is arranged on the upper surface of the light guide plate (7), positioning holes corresponding to the glue columns (71) are formed in the optical film group (8), and the optical film group (8) is sleeved on the glue columns (71).

9. The liquid crystal display screen with improved antistatic ability according to claim 8, wherein the upper surface of the light guide plate (7) is provided with a ring groove (72) surrounding the glue column (71) at the joint of the light guide plate (7) and the glue column (71).

10. The liquid crystal display panel with improved antistatic ability according to claim 9, wherein the cross-sectional shape of the ring groove (72) is square, circular arc or triangle.