CN220210673U

CN220210673U - Oncell liquid crystal display

Info

Publication number: CN220210673U
Application number: CN202320532931.0U
Authority: CN
Inventors: 黄�焕
Original assignee: Truly Opto Electronics Ltd
Current assignee: Truly Opto Electronics Ltd
Priority date: 2023-03-16
Filing date: 2023-03-16
Publication date: 2023-12-19
Anticipated expiration: 2033-03-16

Abstract

The utility model discloses an oncell liquid crystal display screen which comprises a lower polaroid, a lower substrate, an upper substrate and an upper polaroid which are sequentially overlapped from bottom to top, wherein a touch functional layer is arranged on the upper surface of the upper substrate, a driving pattern layer is arranged on the upper surface of the lower substrate, the lower substrate is longer than the upper substrate and extends outwards to form a step, an extending end is formed by extending outwards part of the edge of the upper substrate positioned at one side of the step, a touch FPC (flexible printed circuit) is bound on the upper surface of the extending end, and a driving IC (flexible printed circuit) and a driving FPC (flexible printed circuit) are bound on the upper surface of the lower substrate which is not covered by the extending end. The touch control FPC and the driving FPC can face upwards, the touch control FPC and the driving FPC are located on the same side, the driving FPC can be bound after the touch control FPC is bound, the whole liquid crystal display screen is not required to be turned 180 degrees, the conventional automatic binding equipment is adapted, the binding process is simplified, and the process flow is reduced.

Description

Oncell liquid crystal display

Technical Field

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

Background

Referring to fig. 1 and 2, an oncell LCD refers to that a touch functional layer is formed on an upper surface of an upper substrate 1', that is, a touch functional layer is generally formed on an upper surface of an upper substrate 1' in a conventional design below an upper polarizer 2', a driving pattern layer is formed on a lower surface of the upper substrate 1', then the touch functional layer on the upper surface of the upper substrate 1 'is led out to a touch FPC3', and then the driving pattern layer on the lower surface of the upper substrate 1 'is led out to a driving FPC4', wherein both the touch FPC3 'and the driving FPC4' are required to be connected to a motherboard. However, the touch control FPC3 'and the driving FPC4' with the structure are not on the same side, the driving FPC4 'can be bound only after the whole liquid crystal display screen is turned 180 degrees after the touch control FPC3' is bound, the structure is not suitable for the existing automatic binding equipment, the binding process is more complex due to the fact that the liquid crystal display screen is turned 180 degrees, the manufacturing cost is increased, the probability of defective products of the liquid crystal display screen is 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 improving the product structure of the liquid crystal display, so that the binding process of the touch FPC and the driving FPC is suitable for the existing equipment, the process flow is reduced, and the process difficulty is reduced.

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 an oncell liquid crystal display screen, which comprises a lower polarizer, a lower substrate, an upper substrate and an upper polarizer which are sequentially overlapped from bottom to top, wherein a touch functional layer is arranged on the upper surface of the upper substrate, a driving pattern layer is arranged on the upper surface of the lower substrate, the lower substrate is longer than the upper substrate and extends outwards to form a step, an extending end is formed by extending outwards part of the edge of the upper substrate positioned at one side of the step, a touch FPC (flexible printed circuit) is bound on the upper surface of the extending end, and a driving IC (flexible printed circuit) and a driving FPC (flexible printed circuit) are bound on the upper surface of the lower substrate which is not covered by the extending end.

As a preferred embodiment of the oncell liquid crystal display provided by the utility model, the edge of the protruding end is flush with the edge of the lower substrate.

As a preferred embodiment of the oncell liquid crystal display screen provided by the utility model, the display screen further comprises a cover plate arranged above the upper polarizer, a bulge is arranged at the edge of the upper surface of the lower substrate which is not covered by the extending end, a buffer glue is arranged between the bulge and the upper substrate on the upper surface of the lower substrate, and the buffer glue is in butt joint with the cover plate.

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

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

As a preferred embodiment of the oncell liquid crystal display screen provided by the utility model, a rounding angle is arranged between the bulge and the lower substrate.

As a preferred embodiment of the oncell liquid crystal display screen provided by the utility model, the driving FPC comprises a substrate layer, a circuit layer arranged on the upper surface of the substrate layer and a metal heat dissipation layer arranged on the lower surface of the substrate layer.

As a preferred embodiment of the oncell liquid crystal display provided by the utility model, the driving FPC further comprises at least one perforation penetrating through the substrate 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.

In a preferred embodiment of the oncell liquid crystal display provided by the utility model, 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 a preferred embodiment of the oncell liquid crystal display screen provided by the utility model, the metal heat dissipation layer has a structure of a net structure, a strip structure, a wavy structure or a honeycomb structure.

The utility model has the following beneficial effects:

because the edge of the upper substrate positioned on one side of the step extends outwards to form an extending end, the touch FPC is bound on the upper surface of the extending end, and the upper surface of the lower substrate which is not covered by the extending end is bound with the driving IC and the driving FPC, so that the touch FPC and the driving FPC face upwards, the touch FPC and the driving FPC are positioned on the same side, the driving FPC can be bound after the touch FPC is bound, the whole liquid crystal display is not required to be turned 180 degrees, the conventional automatic binding equipment is adapted, the binding process is simplified, the process flow is reduced, the manufacturing cost is reduced, the probability of defective products of the liquid crystal display is reduced, 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 an oncell lcd in the prior art.

Fig. 2 is a cross-sectional view of fig. 1.

Fig. 3 is a schematic structural diagram of an oncell lcd according to the present utility model.

Fig. 4 is a cross-sectional view at A-A in fig. 3.

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; a lower substrate 2; an upper substrate 3; a top polarizer 4; a touch FPC5; a drive IC6; driving the FPC7; an extension 31;

a cover plate 8; 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 an oncell liquid crystal display screen which comprises a lower polaroid, a lower substrate, an upper substrate and an upper polaroid which are sequentially overlapped from bottom to top, wherein a touch functional layer is arranged on the upper surface of the upper substrate, a driving pattern layer is arranged on the upper surface of the lower substrate, the lower substrate is longer than the upper substrate and extends outwards to form a step, an extending end is formed by extending outwards part of the edge of the upper substrate positioned at one side of the step, a touch FPC (flexible printed circuit) is bound on the upper surface of the extending end, and a driving IC (flexible printed circuit) and a driving FPC (flexible printed circuit) are bound on the upper surface of the lower substrate which is not covered by the extending end.

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. 3 and 4, an oncell lcd provided by the present utility model includes a lower polarizer 1, a lower substrate 2, an upper substrate 3 and an upper polarizer 4 sequentially stacked from bottom to top, a touch functional layer is disposed on an upper surface of the upper substrate 3, a driving pattern layer is disposed on an upper surface of the lower substrate 2, the lower substrate 2 is longer than the upper substrate 3 and protrudes outwards to form a step, an edge of the upper substrate 3 protrudes outwards, an protruding end 31 is formed on an protruding portion of the upper substrate 3, the protruding end 31 is located on one side of the step, a touch FPC5 is bonded on an upper surface of the protruding end 31, and a driving IC6 and a driving FPC7 are bonded on an upper surface of the lower substrate 2 uncovered by the protruding end 31. Because the edge of the upper substrate 3 positioned on one side of the step extends outwards to form the extending end 31, the touch FPC5 is bound on the upper surface of the extending end 31, and the driving IC6 and the driving FPC7 are bound on the upper surface of the lower substrate 2 which is not covered by the extending end 31, so that the touch FPC5 and the driving FPC7 face upwards, the touch FPC5 and the driving FPC7 are positioned on the same side, the driving FPC7 can be bound after the touch FPC5 is bound, the whole liquid crystal display screen is not required to be turned 180 degrees, the conventional automatic binding equipment is adapted, the binding process is simplified, the process flow is reduced, the manufacturing cost is reduced, the probability of defective products of the liquid crystal display screen is reduced, the product competitiveness of the liquid crystal display screen is improved, and the increasing quality requirements of enterprises are met.

Further, the edge of the protruding end 31 is flush with the edge of the lower substrate 2 so that this portion of the lower substrate 2 does not form a single layer region, thereby avoiding the occurrence of a case where the single layer region is easily broken.

Example 2

Referring to fig. 5, as a further optimization scheme of embodiment 1, the embodiment further includes a cover plate 8 disposed above the upper polarizer 4, a protrusion 21 is disposed at an edge of the upper surface of the lower substrate 2 uncovered by the protruding end 31, a buffer glue 9 is disposed between the protrusion 21 and the upper substrate 3 on the upper surface of the lower substrate 2, and the buffer glue 9 abuts against the cover plate 8. Since the edge of the lower 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 lower 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 upper substrate 3 to further limit the flow of the cushion gum 9, so that the shape 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 protrusion 21 and the lower substrate 2, so that the buffer glue 9 is easier to fill the space between the protrusion 21 on the upper surface of the lower substrate 2 and the upper substrate 3, and the protrusion 21 with the rounded corner is arranged to enable the buffer glue 9 to flow into the space between the protrusion 21 on the upper surface of the lower substrate 2 and the upper substrate 3 more smoothly, so that bubbles are not easy to occur.

Example 3

Referring to fig. 6, as a further optimization scheme of embodiment 1, in this embodiment, the driving 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 the circuit layer 72 and the metal heat dissipation layer 73 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 driving 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 driving FPC7, so that the effect of uniform heat dissipation is achieved, and the heat dissipation efficiency of the driving 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 layer.

Further, the driving 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 driving FPC7 is diffused to the external heat conducting structure through the heat conductor in the through hole 74, so that the heat dissipation efficiency of the driving FPC7 is further improved. 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 driving FPC7.

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 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 oncell liquid crystal display, its characterized in that includes by last lower polaroid (1), lower base plate (2), upper base plate (3) and last polaroid (4) that the sequential stack set up down, the upper surface of upper base plate (3) is provided with the touch-control functional layer, the upper surface of lower base plate (2) is provided with the drive pattern layer, lower base plate (2) be longer than upper base plate (3) and outwards stretch out and be formed with the step, be located the edge of upper base plate (3) of step one side outwards partly stretch out and be formed with extension end (31), touch-control FPC (5) are bound to the upper surface of extension end (31), are not by extension end (31) cover lower base plate (2) upper surface is bound and is had drive IC (6) and drive FPC (7).

2. An oncell liquid crystal display according to claim 1, characterized in that the edge of the protruding end (31) is flush with the edge of the lower substrate (2).

3. The oncell liquid crystal display screen according to claim 1, further comprising a cover plate (8) arranged above the upper polarizer (4), wherein a protrusion (21) is arranged at the edge of the upper surface of the lower substrate (2) uncovered by the protruding end (31), a buffer glue (9) is arranged between the protrusion (21) and the upper substrate (3) on the upper surface of the lower substrate (2), and the buffer glue (9) is abutted with the cover plate (8).

4. An oncell liquid crystal display according to claim 3, characterized in that the upper surface of the protrusion (21) is flush with the upper surface of the upper substrate (3).

5. An oncell liquid crystal display according to claim 3, characterized in that the buffer glue (9) is a silicone glue.

6. An oncell liquid crystal display according to claim 3, characterized in that rounded corners are provided between the protrusions (21) and the lower substrate (2).

7. The oncell liquid crystal display according to claim 1, wherein the driving FPC (7) includes a base material layer (71), a circuit layer (72) provided on an upper surface of the base material layer (71), and a metal heat dissipation layer (73) provided on a lower surface of the base material layer (71).

8. The oncell liquid crystal display according to claim 7, wherein the driving FPC (7) further comprises at least one through hole (74) penetrating the base material layer (71), the circuit layer (72) and the metal heat dissipation layer (73), and an inner wall of the through hole (74) is provided with a heat conduction layer contacting the circuit layer (72) and the metal heat dissipation layer (73).

9. The oncell liquid crystal display of claim 8, wherein a heat conductor connected to an external heat conducting structure is disposed within the perforation (74), the heat conductor being in contact with the heat conducting layer.

10. The oncell liquid crystal display according to claim 7, wherein the metal heat sink layer (73) has a mesh structure, a stripe structure, a wave structure, or a honeycomb structure.