CN218917866U

CN218917866U - GG structure liquid crystal display screen capable of preventing pins of FPC from falling off

Info

Publication number: CN218917866U
Application number: CN202320142806.9U
Authority: CN
Inventors: 黄生发; 詹雅莹
Original assignee: Truly Opto Electronics Ltd
Current assignee: Truly Opto Electronics Ltd
Priority date: 2023-01-31
Filing date: 2023-01-31
Publication date: 2023-04-25
Anticipated expiration: 2033-01-31

Abstract

The utility model discloses a GG structure liquid crystal display screen capable of preventing pins of an FPC from falling off, NC PAD refers to a binding PAD which is not connected, NC PAD mainly improves binding force between binding positions of two sides and the lower surface of touch glass, and transfers and disperses edge pulling force, when the binding positions of the two sides are pulled under the action of external force, NC PADs of the two sides are preferentially pulled, because the binding width of NC PADs is larger than the binding width of pins of the binding positions of the two sides, NC PADs can bear larger pulling force, thereby avoiding the situation that pins fall off after the binding positions of the two sides are acted by external force, avoiding the occurrence of failure of an ITO layer on the lower surface of the touch glass, avoiding abnormal touch function of the liquid crystal display screen, reducing the probability of defective products of the liquid crystal display screen, greatly reducing the production and manufacturing cost of the liquid crystal display screen, and improving the product competitiveness of the liquid crystal display screen.

Description

GG structure liquid crystal display screen capable of preventing pins of FPC from falling off

Technical Field

The utility model relates to the technical field of liquid crystal display, in particular to a GG structure liquid crystal display screen capable of preventing pins of an FPC from falling off.

Background

At present, the FPC of the liquid crystal display screen of GG DITO structure has two binding bits, two binding bits bind respectively in touch glass's positive and negative, one is the middle binding bit of binding in touch glass's upper surface's marginal centre department, the other is the both sides limit binding bit of binding in touch glass's both sides of the edge of lower surface, the middle binding bit of binding in touch glass's upper surface is because hiding in the centre, so be difficult to pull by external force effect, and the both sides limit binding bit of binding in touch glass's lower surface is because be in both sides limit, so very easily pulled by external force effect, the circumstances that the pin of both sides limit binding bit drops very easily appears after external force effect, the ITO layer inefficacy of touch glass lower surface can be caused to the both sides limit binding bit after dropping, thereby lead to liquid crystal display screen's touch function anomaly, and then make liquid crystal display screen's probability of defective products rise, liquid crystal display screen's production and manufacturing cost also can increase substantially, thereby the product competitiveness of liquid crystal display screen has not satisfied the quality requirement that the enterprise increases progressively.

Disclosure of Invention

The utility model aims to solve the technical problem of how to prevent pins bound and positioned on two sides of an FPC from falling off, so that abnormal touch function is avoided.

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 GG structure liquid crystal display screen capable of preventing pins of an FPC from falling, which comprises touch glass, an OCA adhesive layer and a cover plate, wherein the touch glass, the OCA adhesive layer and the cover plate are sequentially overlapped from bottom to top, a first ITO layer and a second ITO layer are respectively arranged on the upper surface and the lower surface of the touch glass, the FPC is arranged on one side of the touch glass, the FPC comprises a connecting part, a middle binding position and two side binding positions, the middle binding position is arranged in the middle of one side of the connecting part, the two side binding positions are arranged on two sides of one side of the connecting part, the middle binding position is bound on the upper surface of the touch glass, the two side binding positions are bound on the lower surface of the touch glass, NC PADs are respectively connected and bound on two sides of the two side binding positions, and the binding width of the NC PADs is larger than the binding width of the pins of the two side binding positions.

As a preferred implementation mode of the GG structure liquid crystal display screen capable of preventing pins of the FPC from falling off, the binding width of the NC PAD is 4 times of the binding width of the pins of the two side binding positions.

As an optimal implementation mode of the GG structure liquid crystal display screen capable of preventing pins of the FPC from falling off, the upper surface of the cover plate is provided with a plurality of grooves through etching, a plastic layer is covered above the cover plate, and the plastic layer is embedded into the grooves.

As a preferred embodiment of the GG structure liquid crystal display screen capable of preventing pins of the FPC from falling off, the grooves are square or round.

As a preferred embodiment of the GG structure liquid crystal display screen capable of preventing pins of the FPC from falling off, the cross section of the groove is isosceles trapezoid.

As an optimal implementation mode of the GG structure liquid crystal display screen for preventing pins of the FPC from falling, an anti-fingerprint coating is arranged on the upper surface of the plastic layer.

In an preferred embodiment of the GG structure liquid crystal display panel for preventing pins of the FPC from falling off, the connection portion includes a substrate layer, a circuit layer disposed on an upper surface of the substrate layer, and a metal heat dissipation layer disposed on a lower surface of the substrate layer.

As an optimal implementation mode of the GG structure liquid crystal display screen capable of preventing pins of the FPC from falling off, the connecting part 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 in contact with the circuit layer and the metal heat dissipation layer is arranged on the inner wall of the perforation.

As an optimal implementation mode of the GG structure liquid crystal display screen capable of preventing pins of the FPC from falling off, a heat conductor connected with an external heat conducting structure is arranged in the through hole, and the heat conductor is in contact with the heat conducting layer.

As an optimal implementation mode of the GG structure liquid crystal display screen capable of preventing pins of the FPC from falling off, the metal heat dissipation layer is in a net structure, a strip structure, a wavy structure or a honeycomb structure.

The utility model has the following beneficial effects:

NC PAD refers to a binding PAD which is not connected with functions, the NC PAD mainly improves binding force between binding positions of two sides and the lower surface of the touch glass, and transfers and disperses edge pulling force, when external force acts to pull the binding positions of the two sides, NC PADs of the two sides are preferentially pulled, because the binding width of the NC PADs is larger than the binding width of pins of the binding positions of the two sides, the NC PADs can bear larger pulling force, thereby avoiding the situation that the pins fall off after the binding positions of the two sides are acted by the external force, avoiding the occurrence of the situation that an ITO layer on the lower surface of the touch glass fails, avoiding abnormal touch function of the liquid crystal display, further reducing probability of defective products of the liquid crystal display, and increasing production and manufacturing cost of the liquid crystal display, thereby improving product competitiveness of the liquid crystal display, and meeting the increasing quality requirements of enterprises.

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 GG structure lcd panel for preventing pins of an FPC from falling off.

Fig. 2 is a bottom view of fig. 1.

Fig. 3 is an enlarged view at a in fig. 2.

Fig. 4 is a schematic diagram of an improved structure of the cover plate in fig. 1.

Fig. 5 is an exploded view of fig. 4.

Fig. 6 is a schematic diagram of another modification of the cover plate.

Fig. 7 is a schematic view of a modified structure of the FPC in fig. 1.

Reference numerals illustrate:

a touch glass 1; an OCA glue layer 2; a cover plate 3; an FPC4;

a connection portion 41; an intermediate binding bit 42; two side binding positions 43; NC PAD44;

a first side binding bit 431; a second side binding bit 432;

a first NC PAD441; a second NC PAD442;

a groove 31; a plastic layer 5;

a base material layer 411; a circuit layer 412; a metal heat dissipation layer 413; and perforations 414.

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 GG structure liquid crystal display screen capable of preventing pins of an FPC from falling, which comprises touch glass, an OCA adhesive layer and a cover plate which are sequentially overlapped from bottom to top, wherein a first ITO layer and a second ITO layer are respectively arranged on the upper surface and the lower surface of the touch glass, one side of the touch glass is provided with the FPC, the FPC comprises a connecting part, a middle binding position and two side binding positions, the middle binding position is arranged in the middle of one side of the connecting part, the two side binding positions are arranged on two sides of one side of the connecting part, the middle binding position is bound on the upper surface of the touch glass, the two side binding positions are bound on the lower surface of the touch glass, the two sides of the two side binding positions are respectively connected and bound with an NC PAD, and the binding width of the NC PAD is larger than the binding width of the pins of the two side binding positions.

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 to 3, the GG structure lcd screen for preventing pins of FPC from falling includes a touch glass 1, an OCA adhesive layer 2 and a cover plate 3 sequentially stacked from bottom to top, a first ITO layer is disposed on an upper surface of the touch glass 1, a lower surface of the touch glass 1 is disposed on a second ITO layer, an FPC4 is disposed on one side of the touch glass 1, the FPC4 includes a connection portion 41, a middle binding portion 42 and two side binding portions 43, the middle binding portion 42 is disposed in a middle of one side of the connection portion 41, two side binding portions 43 include a first side binding portion 431 and a second side binding portion 432, the first side binding portion 431 is disposed on a left side of the middle binding portion 42, the second side binding portion 432 is disposed on a right side of the middle binding portion 42, the middle binding bit 42 is not connected with the first side binding bit 431 and the second side binding bit 432, and therefore, the middle binding bit 42 is bent towards different directions, the middle binding bit 42 is bound at the middle position of the edge of the upper surface of the touch glass 1, the two side binding bits 43 are bent and then bound at the lower surface of the touch glass 1, wherein the first side binding bit 431 is bound at the left side of the edge of the lower surface of the touch glass 1, the second side binding bit 432 is bound at the right side of the edge of the lower surface of the touch glass 1, the first ITO layer is electrically connected with the middle binding bit 42, the second ITO layer is electrically connected with the two side binding bits 43, the two sides of the first side binding bit 431 and the second side binding bit 432 are respectively connected and bound with an NC PAD44, the NC PAD44 comprises a first NC PAD441 arranged at the left side of the first side binding bit 431 and a second NC PAD442 arranged at the right side of the second side binding bit 432, the binding width of NC PAD44 is greater than the binding width of the pins of both side binding bits 43.

Further, the binding width of the NC PAD44 is 4 times that of the pins of the two side binding bits 43, so as to ensure the binding force of the NC PAD44 and further reduce the possibility of falling off the pins of the two side binding bits 43.

Example 2

Referring to fig. 4 and 5, in this embodiment, as a further optimization scheme of embodiment 1, a plurality of grooves 31 are formed on the upper surface of the cover plate 3 by etching, a plastic layer 5 is covered on the upper side of the cover plate 3, the plastic layer 5 is embedded into the plurality of grooves 31, and the plastic layer 5 can be embedded into the plurality of grooves 31 by etching because the plastic layer 5 is covered on the upper side of the cover plate 3, the grooves 31 formed by etching can make the inner surface of the grooves 31 have a certain roughness, and the surface of the grooves 31 with a certain roughness can promote the adhesion between the grooves 31 and the plastic layer 5, so as to reduce the possibility of separating the grooves 31 from the plastic layer 5. When the liquid crystal display screen collides or falls, the plastic layer 5 on the upper surface of the cover plate 3 can directly bear the action of external force, so that the external force can be prevented from directly acting on the cover plate 3, and as the plastic layer 5 can absorb most of energy, the rest external force acts on the cover plate 3 very weakly, so that the risk of cracking or damaging the cover plate 3 can be effectively reduced; and when the liquid crystal display receives the exogenic action, even external force effect is great, also can only harm the plastic layer 5 of apron 3 upper surface, and can not directly harm apron 3, consequently can avoid apron 3 to damage and lead to liquid crystal display unable normal use, bring better use experience for the user, improved liquid crystal display's anti-drop ability.

Referring to fig. 6, further, the shape of the groove 31 may be square or circular, the cross-sectional shape of the groove 31 may be a narrow-outside-inside-wide closing groove, in this embodiment, the cross-sectional shape of the groove 31 is isosceles trapezoid, and the groove 31 is long, the isosceles trapezoid groove 31 may enable the plastic layer 5 to be tightly embedded into the groove 31, so as to avoid separation of the groove 31 and the plastic layer 5, and thus prevent the cover plate 3 from falling off from the plastic layer 5, and the long groove 31 may increase the bonding portion of the plastic layer 5 and the groove 31, thereby improving the bonding strength of the groove 31 and the plastic layer 5.

Further, the upper surface of the plastic layer 5 is provided with an anti-fingerprint coating to further improve the bonding capability of the groove 31 and the plastic layer 5 and prevent the cover plate 3 from being separated from the plastic layer 5.

Example 3

Referring to fig. 7, as a further optimization scheme of embodiment 1, in this embodiment, the connection portion 41 includes a substrate layer 411, a circuit layer 412 disposed on an upper surface of the substrate layer 411, and a metal heat dissipation layer 413 disposed on a lower surface of the substrate layer 411, where the manner of disposing the circuit layer 412 and the metal heat dissipation layer 413 may be that the circuit layer 412 and the metal heat dissipation layer 413 are respectively adhered to the substrate layer 411 through double-sided tape. Because the thickness of the base material layer 411 is thinner, heat on the connection portion 41 can be diffused to the metal heat dissipation layer 413 through the base material layer 411, and the metal heat dissipation layer 413 can effectively increase the heat dissipation area of the connection portion 41, and plays a role in uniform heat dissipation, so that the heat dissipation efficiency of the connection portion 41 is improved. The substrate layer 411 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 413 may be a copper foil layer.

Further, the connection portion 41 further includes at least one through hole 414 penetrating through the substrate layer 411, the circuit layer 412 and the metal heat dissipation layer 413, wherein a heat conduction layer contacting the circuit layer 412 and the metal heat dissipation layer 413 is disposed on an inner wall of the through hole 414, and the circuit layer 412 and the metal heat dissipation layer 413 on two sides of the substrate layer 411 can be electrically connected to perform a good heat conduction function by using a good heat conduction property of the through hole 414, 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 414, and the heat conductor is connected to the external heat conducting structure from one side of the circuit layer 412 and is also in contact with the heat conducting layer in the through hole 414, so that the circuit layer 412 and the metal heat dissipation layer 413 can be connected to the external heat conducting structure through the through hole 414, and heat in the connection portion 41 is diffused to the external heat conducting structure through the heat conductor in the through hole 414, so as to further improve the heat dissipation efficiency of the connection portion 41. Preferably, in order to allow the perforation 414 to be connected with the external heat conductive structure, the perforation 414 is provided at an edge position of the connection portion 41.

Further, the metal heat dissipation layer 413 has a uniform heat dissipation structure, and the structure can be any one of a mesh structure, a strip structure, a wave structure or a honeycomb structure, and the heat dissipation effect can be better improved through 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 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 a avoid GG structure liquid crystal display that FPC's pin drops, its characterized in that includes by down to last touch-control glass (1), OCA glue film (2) and apron (3) that sequentially superpose in proper order and set up, the upper surface and the lower surface of touch-control glass (1) are provided with first ITO layer and second ITO layer respectively, one side of touch-control glass (1) is provided with FPC (4), FPC (4) include connecting portion (41), middle binding position (42) and both sides limit binding position (43), middle binding position (42) set up in the centre of one side of connecting portion (41), both sides limit binding position (43) set up in the both sides of one side of connecting portion (41), middle binding position (42) bind in the upper surface of touch-control glass (1), both sides limit binding position (43) bind in the lower surface of touch-control glass (1), both sides limit binding position (43) both sides are connected respectively and are bound PAD (44), width binding position (NC) width binding position (44) width binding position of the side NC (44).

2. The GG structure lcd panel for preventing pin drop of FPC according to claim 1, wherein the binding width of the NC PAD (44) is 4 times the binding width of the pins of the two-side binding bits (43).

3. The GG structure lcd panel for preventing pins of FPC from falling off according to claim 1, wherein a plurality of grooves (31) are formed on the upper surface of the cover plate (3) by etching, a plastic layer (5) is covered on the cover plate (3), and the plastic layer (5) is embedded in a plurality of the grooves (31).

4. A GG structure lcd panel for preventing pin drop of FPC according to claim 3, wherein the shape of the recess (31) is square or circular.

5. A GG structure lcd panel for preventing pin drop of FPC according to claim 3, wherein the cross-sectional shape of the groove (31) is isosceles trapezoid.

6. A GG structure lcd panel for preventing pin detachment of FPC according to claim 3, wherein the plastic layer (5) has an anti-fingerprint coating on its upper surface.

7. The GG structure lcd panel of claim 1, wherein the connection portion (41) comprises a base layer (411), a circuit layer (412) disposed on an upper surface of the base layer (411), and a metal heat dissipation layer (413) disposed on a lower surface of the base layer (411).

8. The GG structure lcd panel of claim 7, wherein the connection portion (41) further comprises at least one through hole (414) penetrating the base material layer (411), the circuit layer (412) and the metal heat dissipation layer (413), and an inner wall of the through hole (414) is provided with a heat conduction layer contacting the circuit layer (412) and the metal heat dissipation layer (413).

9. The GG structure lcd panel for preventing pin detachment of FPC of claim 8, wherein a heat conductor connected to an external heat conductive structure is disposed in the through hole (414), and the heat conductor is in contact with the heat conductive layer.

10. The GG structure lcd panel for preventing pin drop of FPC according to claim 7, wherein the metal heat sink layer (413) has a mesh structure, a stripe structure, a wave structure or a honeycomb structure.