CN221225220U

CN221225220U - Liquid crystal display screen

Info

Publication number: CN221225220U
Application number: CN202323148461.7U
Authority: CN
Inventors: 章小和; 康飞旺
Original assignee: Xinli Photoelectric Renshou Co Ltd
Current assignee: Xinli Photoelectric Renshou Co Ltd
Priority date: 2023-11-21
Filing date: 2023-11-21
Publication date: 2024-06-25
Anticipated expiration: 2033-11-21

Abstract

The utility model discloses a liquid crystal display screen, which comprises a lower polaroid, an array substrate, a color film substrate, an upper polaroid and a cover plate which are sequentially overlapped from bottom to top, wherein the array substrate is longer than the color film substrate and extends outwards to form a step, an IC and an FPC are bound on the upper surface of the array substrate at the step, copper foil is covered above the IC and the FPC, a grounding copper exposure area is arranged on the FPC, the grounding copper exposure area is electrically contacted with the copper foil, insulating paper is arranged on the outer surface of the copper foil, and a black scratch-resistant layer is covered on the outer surface of the insulating paper. Because the FPC is provided with the grounding copper exposure area, the grounding copper exposure area is in electrical contact with the copper foil, and an electromagnetic shielding layer can be formed to solve the problem of radio frequency interference; the surface of copper foil is provided with insulating paper, and insulating surface still covers has black scratch resistant layer, and it makes can not drop easily when the surface of insulating paper receives the circumstances such as foreign object friction or scrapes.

Description

Liquid crystal display screen

Technical Field

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

Background

In order to avoid the problem of radio frequency interference of a liquid crystal display, a copper foil is generally attached above an IC and above an FPC, a grounding copper exposure area is correspondingly increased on the FPC and is attached to the copper foil, so that an electromagnetic shielding layer is formed, the problem of radio frequency interference is solved through the copper foil, an insulating paper is also required to be added between the copper foil and electronic components on the IC and the FPC, the stacking structure of the insulating paper is that a layer of black ink is sprayed at the upper end of PET, and a layer of glue is sprayed at the lower end of the PET. However, after the copper foil is attached to the display module, if the surface insulating paper is rubbed or scratched by foreign objects, the black ink on the surface is easy to drop, so that the defects are caused, the product yield and the brand value are affected, and the competitiveness of the product is reduced.

Disclosure of utility model

The utility model aims to solve the technical problem of improving the scratch resistance of insulating paper and avoiding the falling of black ink.

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, which comprises a lower polarizer, an array substrate, a color film substrate, an upper polarizer and a cover plate which are sequentially overlapped from bottom to top, wherein the array substrate is longer than the color film substrate and extends outwards to form a step, an IC and an FPC are bound on the upper surface of the array substrate at the step, copper foil is covered above the IC and the FPC, a grounding copper exposure area is arranged on the FPC, the grounding copper exposure area is in electrical contact with the copper foil, insulating paper is arranged on the outer surface of the copper foil, and a black scratch-resistant layer is covered on the outer surface of the insulating paper.

As a preferred embodiment of the liquid crystal display screen provided by the utility model, the black scratch-resistant layer is black glue.

As a preferred embodiment of the liquid crystal display screen provided by the utility model, the black scratch-resistant layer comprises a black layer and a scratch-resistant layer, the black layer is arranged on the outer surface of the insulating paper, and the scratch-resistant layer is arranged on the outer surface of the black layer.

As a preferable implementation mode of the liquid crystal display screen provided by the utility model, the black layer is black ink, and the scratch-resistant layer is scratch-resistant glue.

As a preferred implementation manner of the liquid crystal display screen provided by the utility model, the edge of the upper surface of the outwards extending array substrate is provided with the bulge, the upper surface of the array substrate is provided with the buffer glue between the bulge and the color film substrate, and the buffer glue is abutted with the cover plate.

As a preferred embodiment of the liquid crystal display screen provided by the utility model, the upper surface of the bulge is flush with the upper surface of the color film substrate.

As a preferred embodiment of the liquid crystal display screen provided by the utility model, the buffer glue is silicone glue.

As a preferred implementation manner of the liquid crystal display screen provided by the utility model, a rounding angle is arranged between the bulge and the array substrate.

As a preferred embodiment of the liquid crystal display panel provided by the utility model, the FPC includes a base material layer, a circuit layer disposed on an upper surface of the base material layer, and a metal heat dissipation layer disposed on a lower surface of the base material layer.

As a preferred embodiment of the liquid crystal display provided by the utility model, the FPC further comprises at least one perforation penetrating through the base material layer, the circuit layer and the metal heat dissipation layer, and a heat conduction layer contacting with the circuit layer and the metal heat dissipation layer is arranged on the inner wall of the perforation.

The utility model has the following beneficial effects:

Because the FPC is provided with the grounding copper exposure area, the grounding copper exposure area is in electrical contact with the copper foil, and an electromagnetic shielding layer can be formed to solve the problem of radio frequency interference; the surface of copper foil is provided with insulating paper, and insulating surface still covers has black scratch resistant layer, and it makes can not drop easily when the surface of insulating paper receives the foreign object friction or scrapes the circumstances such as bump to avoid the product bad, improve product yield, brand value and product competitiveness.

Drawings

In order to more clearly illustrate the solution of the present application, a brief description will be given below of the drawings required for 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 according to the present utility model.

Fig. 2 is a schematic view of the structure at the copper foil.

Fig. 3 is a schematic structural view of an insulating paper.

Fig. 4 is a schematic diagram of an improved structure at the insulating paper.

Fig. 5 is a schematic structural diagram of embodiment 2.

Fig. 6 is a schematic structural diagram of embodiment 3.

Reference numerals illustrate:

A lower polarizer 1; an array substrate 2; a color film substrate 3; a top polarizer 4; a cover plate 5; an IC6; an FPC7; copper foil 8; an insulating paper 81; a black scratch-resistant layer 82; a first insulating paper 811; a second insulating paper 812; a first black scratch-resistant layer 821; a second black scratch-resistant layer 822;

A black layer 8201; scratch resistant layer 8202;

A protrusion 21; buffer glue 9;

A base material layer 71; a circuit layer 72; a metal heat dissipation layer 73; perforations 74.

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, which comprises a lower polaroid, an array substrate, a color film substrate, an upper polaroid and a cover plate which are sequentially overlapped from bottom to top, wherein the array substrate is longer than the color film substrate and extends outwards to form a step, an IC and an FPC are bound on the upper surface of the array substrate at the step, copper foil is covered above the IC and the FPC, a grounding copper exposure area is arranged on the FPC, the grounding copper exposure area is electrically contacted with the copper foil, insulating paper is arranged on the outer surface of the copper foil, and a black scratch-resistant layer is covered on the outer surface of the insulating paper.

In order to make the person skilled in the art better understand the solution of the present utility model, the technical solution of the embodiment of the present utility model will be clearly and completely described below 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 to 4, a liquid crystal display provided by the present utility model includes a lower polarizer 1, an array substrate 2, a color film substrate 3, an upper polarizer 4 and a cover plate 5 sequentially stacked from bottom to top, wherein the array substrate 2 is longer than the color film substrate 3 and extends outwards to form a step, an IC6 and an FPC7 are bound on the upper surface of the array substrate 2 at the step, a copper foil 8 is covered above the IC6 and the FPC7, a ground copper exposure area is provided on the FPC7, the ground copper exposure area is electrically contacted with the copper foil 8, an insulating paper 81 is provided on the outer surface of the copper foil 8, and a black scratch-resistant layer 82 is covered on the outer surface of the insulating paper 81. In this embodiment, the insulating papers 81 include two sheets of first insulating papers 811 and second insulating papers 812, the first insulating papers 811 are covered on the upper surface of the copper foil 8, and the second insulating papers 812 are covered on the lower surface of the copper foil 8. Each insulating paper 81 is provided with a black scratch-resistant layer 82 including a first black scratch-resistant layer 821 and a second black scratch-resistant layer 822, the first black scratch-resistant layer 821 being provided on an upper surface of the first insulating paper 811, and the second black scratch-resistant layer 822 being provided on a lower surface of the second insulating paper 812.

Further, the material of the insulating paper is PET.

Further, the black scratch-proof layer 82 is black glue, and the black glue can play a role of friction damage prevention.

Further, the black scratch-resistant layer 82 includes a black layer 8201 and a scratch-resistant layer 8202, the black layer 8201 is disposed on the outer surface of the insulating paper 81, the scratch-resistant layer 8202 is disposed on the outer surface of the black layer 8201, and the scratch-resistant layer 8202 can play a role in preventing friction damage.

Further, the black layer 8201 is black ink, the scratch-resistant layer 8202 is scratch-resistant glue, and the scratch-resistant glue can play a role in preventing friction damage.

Example 2

Referring to fig. 5, in this embodiment, as a further optimization scheme of embodiment 1, a protrusion 21 is disposed at an edge of an upper surface of the array substrate 2 protruding outwards, and a buffer glue 9 is disposed between the protrusion 21 and the color film substrate 3 on the upper surface of the array substrate 2, where the buffer glue 9 abuts against the cover plate 5. Since the edge of the array substrate 2 is provided with the bulge 21, the bulge 21 can limit the flow of the buffer glue 9, so that the form of the buffer glue 9 is easy to control, and the phenomenon of glue overflow or glue dropping is not full can be avoided. Thereby avoiding the liquid crystal display screen from being unable to be assembled with the casing. And further, the problems of poor buffering effect and easiness in cracking of the array substrate 2 caused by insufficient dispensing are avoided, and abnormal display of the liquid crystal display screen is prevented.

Further, the upper surface of the protrusion 21 is flush with the upper surface of the color film substrate 3, so as to further limit the flow of the cushion gum 9, so that the form of the cushion gum 9 is easy to control, and no phenomenon of glue overflow or insufficient dispensing occurs.

Further, the cushion gum 9 is silicone gum.

Further, a rounded corner is arranged between the bulge 21 and the array substrate 2, so that the buffer glue 9 is easier to fill up the space between the bulge 21 on the upper surface of the array substrate 2 and the color film substrate 3, and the bulge 21 with the rounded corner can enable the buffer glue 9 to flow into the space between the bulge 21 on the upper surface of the array substrate 2 and the color film substrate 3 more smoothly, so that bubbles are not easy to occur.

Further, the upper surface of the array substrate 2 and the side surfaces of the protrusions 21 are roughened surfaces to enhance the fixing effect of the cushion rubber 9.

Example 3

Referring to fig. 6, as a further optimization scheme of embodiment 1, in this embodiment, the FPC7 includes a substrate layer 71, a circuit layer 72 disposed on an upper surface of the substrate layer 71, and a metal heat dissipation layer 73 disposed on a lower surface of the substrate layer 71, where the manner of disposing may be that the circuit layer 72 and the metal heat dissipation layer 73 are respectively adhered to the substrate layer 71 through double-sided tape. Because the thickness of the substrate layer 71 is thinner, heat on the FPC7 can be diffused to the metal heat dissipation layer 73 through the substrate layer 71, and the metal heat dissipation layer 73 can effectively increase the heat dissipation area of the FPC7, and plays a role in uniform heat dissipation, so that the heat dissipation efficiency of the FPC7 is improved. The substrate layer 71 may be any one of polyimide, polyester, polysulfone or polytetrafluoroethylene, the double sided tape may be any one of an acrylic adhesive layer or an epoxy adhesive layer, and the metal heat dissipation layer 73 may be a copper foil 8 layer.

Further, the FPC7 further includes at least one through hole 74 penetrating through the base layer 71, the circuit layer 72 and the metal heat dissipation layer 73, wherein a heat conduction layer contacting the circuit layer 72 and the metal heat dissipation layer 73 is disposed on an inner wall of the through hole 74, and the circuit layer 72 and the metal heat dissipation layer 73 on two sides of the base layer 71 can be electrically connected to perform a good heat conduction function by using a good heat conduction property at the through hole 74, and the heat conduction layer can provide a heat conduction function to achieve a good heat dissipation effect. The heat conducting layer can be a copper adhesive conductive ink layer.

Further, a heat conductor connected to the external heat conducting structure is disposed in the through hole 74, and the heat conductor is connected to the external heat conducting structure from one side of the circuit layer 72 and is also in contact with the heat conducting layer in the through hole 74, so that the circuit layer 72 and the metal heat dissipation layer 73 can be connected to the external heat conducting structure through the through hole 74, and heat in the FPC7 is diffused to the external heat conducting structure through the heat conductor in the through hole 74, so as to further improve the heat dissipation efficiency of the FPC 7. Preferably, in order that the perforation 74 may be connected to an external heat conductive structure, the perforation 74 is provided at an edge position of the FPC 7.

Further, the metal heat dissipation layer 73 has a uniform heat dissipation structure, and the structure thereof may be any one of a mesh structure, a strip structure, a wave structure, and a honeycomb structure, and the heat dissipation effect can be better improved by the uniform heat dissipation structure.

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 above-described embodiments are only some embodiments of the present application, but not all embodiments, and the preferred embodiments of the present application are shown in the drawings, which do not limit the scope of the patent claims. This application may be embodied in many different forms, but rather, embodiments are provided in order to provide a thorough and complete understanding of the present disclosure. Although the 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 description, or equivalents may be substituted for elements thereof. All equivalent structures made by the content of the specification and the drawings of the application are directly or indirectly applied to other related technical fields, and are also within the scope of the application.

Claims

1. The utility model provides a liquid crystal display, its characterized in that includes by down to last lower polaroid, array substrate, various membrane base plate, last polaroid and the apron that the order stack set up in proper order, array substrate is longer than various membrane base plate and outwards stretches out and be formed with the step, be located the step the upper surface of array substrate of department is bound with IC and FPC, IC with FPC's top covers there is the copper foil, be provided with ground connection copper exposure district on the FPC, ground connection copper exposure district with copper foil electrical contact, the surface of copper foil is provided with the insulating paper, the surface cover of insulating paper has black scratch resistant layer.

2. The liquid crystal display of claim 1, wherein the black scratch-resistant layer is black glue.

3. The liquid crystal display according to claim 1, wherein the black scratch-resistant layer comprises a black layer and a scratch-resistant layer, the black layer is disposed on an outer surface of the insulating paper, and the scratch-resistant layer is disposed on an outer surface of the black layer.

4. A liquid crystal display according to claim 3, wherein the black layer is black ink and the scratch-resistant layer is scratch-resistant glue.

5. The liquid crystal display of claim 1, wherein a protrusion is provided at an edge of an upper surface of the array substrate protruding outward, and a buffer adhesive is provided between the protrusion and the color film substrate on the upper surface of the array substrate, and the buffer adhesive abuts against the cover plate.

6. The liquid crystal display of claim 5, wherein the upper surface of the protrusion is flush with the upper surface of the color filter substrate.

7. The liquid crystal display of claim 5, wherein the buffer glue is silicone glue.

8. The liquid crystal display of claim 5, wherein rounded corners are provided between the protrusions and the array substrate.

9. The liquid crystal display according to claim 1, wherein the FPC includes a base material layer, a circuit layer provided on an upper surface of the base material layer, and a metal heat dissipation layer provided on a lower surface of the base material layer.

10. The liquid crystal display of claim 9, wherein the FPC further comprises at least one perforation penetrating the substrate layer, the circuit layer and the metal heat dissipation layer, and an inner wall of the perforation is provided with a heat conduction layer contacting the circuit layer and the metal heat dissipation layer.