Liquid crystal display module structure with flexible circuit board with high tensile capacity

Abstract

The utility model discloses a liquid crystal display module structure with a flexible circuit board having strong tensile capacity, which comprises an LCD display module and a flexible circuit board, the bottom of the LCD display module extends to form a protruding flexible circuit board connecting position, one end of the flexible circuit board is connected with the flexible circuit board connecting position of the LCD display module in a binding manner, and the other end of the flexible circuit board is connected with the flexible circuit board connecting position of the LCD display module in a binding manner. The other end of the main PCB is electrically connected with the main PCB; a bonding layer is arranged between the flexible circuit board connecting position and the flexible circuit board. According to the utility model, more stable and firmer binding connection between the flexible circuit board and the LCD module is formed in a double-side hot-pressing binding mode, and meanwhile, the bonding layers are additionally arranged at the flexible circuit board connecting positions and the flexible circuit board, so that when the flexible circuit board is subjected to outward pulling force, external force directly acts on the bonding layers, hot-pressing binding positioning is not influenced by the external force, and the bonding effect is good. And the signal communication between the flexible circuit board and the LCD display module is not damaged.

Description

TECHNICAL FIELD

[0001] The utility model relates to liquid crystal display technical field especially relates to a kind of liquid crystal display module structures with strong flexible circuit board tensile capacity. BACKGROUND

[0002] LCD display module in liquid crystal display module usually needs to be electrically connected with driving circuit by flexible circuit board, and circular liquid crystal display module screen, such as instrument panel liquid crystal display screen, is circular content display, to realize flexible circuit board connection, usually piece glass circular design, and lower piece glass is projected a region for binding flexible circuit board, but due to the reason of using space, terminal will control the projection size, which will limit the area of flexible circuit board binding area, and the anisotropic conductive adhesive film for hot-press bonding flexible circuit board on glass has limited solidification viscosity, in actual use, flexible circuit board is easily separated from glass if subjected to external force pulling, which affects the normal use of display screen, and even causes liquid crystal display module failure.

[0003] For example, Chinese utility model patent (221899706U) a kind of structure for improving the precision of circular display module when grabbing mark paste, including: display module, the display module includes circular display screen, the circular display screen is provided with shell, the central part of the circular display screen is provided with cross mark;Pixel point in the central part of the cross mark is provided with pixel positioning mark, the cross mark is the control end of the display module and can be controlled by staff to light up, wherein, the central part of the top of circular display screen is electrically connected with touch FPC, and the central part of the bottom of circular display screen is electrically connected with display FPC, as can be seen from the attached drawing, its FPC connection site is narrow, which is not conducive to the stable connection of FPC and display screen.

[0004] Therefore, a kind of liquid crystal display module structure with firm connection and stable contact signal is further provided. UTILITY MODEL CONTENT

[0005] Therefore, it is necessary to provide a liquid crystal display module structure with strong tensile resistance of flexible circuit board to solve the above technical problems, which adopts double-sided binding mode of LCD display module and flexible circuit board, and simultaneously increases the reinforcement of adhesive layer, so that the overall structure is more stable and firm.

[0006] To solve the above technical problems, the utility model adopts the following technical solutions:

[0007] The application discloses a liquid crystal display module structure with high tensile strength of a flexible circuit board, which comprises an LCD display module and a flexible circuit board, wherein the bottom of the LCD display module is provided with a flexible circuit board connecting position protruding outward, one end of the flexible circuit board is connected with the flexible circuit board connecting position of the LCD display module, and the other end is electrically connected with a main PCB.

[0008] Further, the LCD display module comprises a circular first polaroid, a first glass sheet, a second glass sheet and a second polaroid in sequence, the second glass sheet is larger in size than the first glass sheet, and the flexible circuit board connecting position is a connecting area formed by the second glass sheet protruding from the first glass sheet.

[0009] Further, the connecting area is a reverse U-shaped protrusion formed by the second glass sheet extending along the lower edge of the first glass sheet.

[0010] Further, the connecting area is provided with an ITO PAD binding position, and the ITO PAD binding position is arranged on one side of the second glass sheet facing the first glass sheet.

[0011] Further, the ITO PAD binding position comprises a first ITO PAD binding position and a second ITO PAD binding position, and the first ITO PAD binding position and the second ITO PAD binding position are arranged on the left and right sides of the connecting area.

[0012] Further, the flexible circuit board comprises a first connecting pin and a second connecting pin, and the first connecting pin and the second connecting pin are arranged in a U-shaped bifurcation mode.

[0013] Further, the first connecting pin is provided with a first pressing area, and the second connecting pin is provided with a second pressing area.

[0014] Further, the first pressing area and the second pressing area are respectively pressed and bonded with the first ITO PAD binding position and the second ITO PAD binding position through anisotropic conductive adhesive films.

[0015] Further, the connecting area further comprises a first bonding position, and the first bonding position is arranged between the first ITO PAD binding position and the second ITO PAD binding position.

[0016] Further, a second bonding position is arranged between the first connecting pin and the second connecting pin and corresponding to the first bonding position.

[0017] Compared with the prior art, the application has the following beneficial effects:

[0018] This invention provides a flexible circuit board structure for a liquid crystal display module with high tensile strength. It features an inverted U-shaped flexible circuit board connection extending from the lower end of a second glass sheet. A first ITO PAD bonding position and a second ITO PAD bonding position are formed on both sides of this connection. Simultaneously, a U-shaped first and second pressing area are designed to cooperate with the flexible circuit board. Through double-sided thermoforming, a more stable and secure bond is formed between the flexible circuit board and the LCD module. Furthermore, an adhesive layer is added between the first and second ITO PAD bonding positions and between the first and second pressing areas. This ensures that when the flexible circuit board is pulled outwards, the external force acts directly on the adhesive layer, while the thermoforming bonding positions are unaffected. This prevents disruption of signal communication between the flexible circuit board and the LCD display module. Attached Figure Description

[0019] Fig. 1 A schematic diagram of the structure of the liquid crystal display module with high tensile strength of the flexible circuit board provided by this utility model;

[0020] Fig. 2 A side view of the liquid crystal display module structure with high tensile strength provided by this utility model;

[0021] Fig. 3 A schematic diagram of a liquid crystal display module structure with high tensile strength provided by this utility model;

[0022] Fig. 4 A side view of the liquid crystal display module structure with strong tensile strength of flexible circuit board provided by this utility model;

[0023] Fig. 5 A schematic diagram of the flexible circuit board structure for a liquid crystal display module with high tensile strength provided by this utility model.

[0024] The markings in the diagram are explained as follows:

[0025] LCD display module 1, first polarizer 11, first glass sheet 12, second glass sheet 13, second polarizer 14, connecting area 141, first ITO PAD bonding position 1411, second ITO PAD bonding position 1412, first adhesive position 1413;

[0026] Paste layer 2;

[0027] Flexible circuit board 3, first connecting pin 31, first pressing area 311, second connecting pin 31, second pressing area 321, component area 33, second bonding position 34. Detailed Implementation

[0028] In order to make the person skilled in the art better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the scope of protection of the present application.

[0029] In the description of the present application, it should be understood that the orientations or positional relationships indicated by 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" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0030] In addition, the terms "first", "second", "third" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second", "third" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise explicitly specified.

[0031] As described in the background, the existing flexible circuit board connection structure of the circular liquid crystal display structure is not stable enough and is easy to fall off under external force, causing poor manufacturing.

[0032] To solve this technical problem, the present application provides a liquid crystal display module structure with strong flexible circuit board tensile capacity.

[0033] Specifically, please refer to Figs. 1-5 A liquid crystal display module structure with strong flexible circuit board tensile capacity, comprising: an LCD display module 1 and a flexible circuit board 3, the bottom of the LCD display module 1 extends outwardly to form a flexible circuit board connection site, one end of the flexible circuit board 3 is bound and connected with the flexible circuit board connection site of the LCD display module 1, and the other end is electrically connected with a main PCB; a sticky layer 2 is further provided between the flexible circuit board connection site and the flexible circuit board 3.

[0034] The flexible circuit board anti-pull ability strong liquid crystal display module structure has the advantages that the flexible circuit board connecting position of the LCD display module 1 is formed in the inverted U shape, the flexible circuit board 3 is bound through the hot pressing on the left and right sides of the flexible circuit board connecting position, the binding structure is more stable, the adhesive layer is added to the flexible circuit board connecting position and the flexible circuit board, the external pulling force is prevented from directly acting on the hot pressing binding position, and the anti-pulling ability of the liquid crystal display module structure is improved.

[0035] In order to enable the personnel in the technical field to better understand the present application scheme, the technical scheme in the embodiment of the present application will be clearly and completely described below in combination with the drawings.

[0036] It should be noted that the embodiments in the present application and the features and technical solutions in the embodiments can be combined with each other without conflict.

[0037] It should be noted that: similar labels and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0038] Embodiment 1

[0039] Please refer to Figs. 1-5 A flexible circuit board anti-pull ability strong liquid crystal display structure, which comprises an LCD display module 1 and a flexible circuit board 3, the flexible circuit board 3 is electrically connected with the main PCB after being led out from the bottom of the LCD display module 1, specifically, the LCD display module 1 is a circular display module, and the bottom of the LCD display module 1 extends and protrudes a flexible circuit board connecting position in the inverted U shape, the flexible circuit board 3 is internally provided with a control IC, one end of the flexible circuit board 3 is connected with the flexible circuit board connecting position of the LCD display module 1, the other end is electrically connected with the main PCB, and the display module is turned on and controlled.

[0040] Further, the LCD display module 1 comprises circular first polaroid 11, first glass sheet 12, second glass sheet 13 and second polaroid 14 which are sequentially superimposed, the first glass sheet 12 and the second glass sheet 13 are provided with liquid crystal molecules to form a specific image. Further, the size of the second glass sheet 13 is larger than that of the first glass sheet 12, and the flexible circuit board connecting position is the position where the second glass sheet 13 protrudes from the first glass sheet 12 to form a connecting area 141.

[0041] Furthermore, the first glass sheet 12 and the second glass sheet 13 are provided with an ITO conductive layer. The ITO conductive layer extends out from the connection area 141 of the second glass sheet 13 to form an ITO PAD bonding position. The ITO PAD bonding position is located on the side of the second glass sheet 13 facing the first glass sheet 12 and is used to bond with the flexible circuit board 3 to control the driving signal of the display pattern. Specifically, the connection area 141 is an inverted U-shaped protruding connection area formed by the second glass sheet 13 extending arcuately along the lower edge of the first glass sheet 12.

[0042] Furthermore, such as Fig. 3 As shown, the ITO PAD binding position includes a first ITO PAD binding position 1411 and a second ITO PAD binding position 1412. The first ITO PAD binding position 1411 is located on the left side of the inverted U-shaped connection area 141, and the second ITO PAD binding position 1412 is located on the right side of the inverted U-shaped connection area 141. The double-sided binding structure is more robust and stable.

[0043] Furthermore, such as Fig. 5 As shown, the flexible circuit board 3 includes connecting feet and a flexible circuit board body. The connecting feet extend from the flexible circuit board body to form U-shaped forked connecting feet. The connecting feet are adapted to the structure of the connecting area 141. Specifically, the connecting feet include a first connecting foot 31 and a second connecting foot 321. The first connecting foot 31 has a first pressing area 311, and the second connecting foot 31 has a second pressing area 321. The side of the first pressing area 311 corresponding to the second glass sheet 13 has gold fingers corresponding to the first ITO PAD bonding position 1411. The side of the second pressing area 321 corresponding to the second glass sheet 13 has gold fingers corresponding to the second ITO PAD bonding position 1412. The first pressing area 311 and the second pressing area 321 are pressed and bonded to the first ITO PAD bonding position 1411 and the second ITO PAD respectively by anisotropic conductive adhesive film. The flexible circuit board body has a component area 33, which has a control IC for imaging control of the LCD display module.

[0044] Further, the connecting area 141 and the connecting pin of the flexible circuit board 3 are also provided with a sticky layer 2, which further fixes and connects the second glass sheet 13 and the flexible circuit board 3, and the sticky layer 2 can be double-sided adhesive tape or a conventional adhesive. Specifically, the connecting area 141 further comprises a first bonding site 1413, which is arranged between the first ITO PAD binding site 1411 and the second ITO PAD binding site 1412, and the first connecting pin 31 and the second connecting pin 31 are provided with a second bonding site 34 corresponding to the first bonding site 1413, and the sticky layer 2 fixes the flexible circuit board 3 and the second glass sheet 13 by bonding the first bonding site 1413 and the second bonding site 34, when the flexible circuit board 3 is pulled by external force, the force directly acts on the second bonding site 34, and the first pressing area 311 and the second pressing area 321 of the flexible circuit board 3 are not affected by the external force, and the signal communication connection between the flexible circuit board 3 and the second glass sheet 13 is not damaged.

[0045] The assembling process of the liquid crystal display structure with high tensile strength of the flexible circuit board provided by the utility model is as follows: the circular first polarizer 11, the first glass sheet 12, the second glass sheet 13 and the second polarizer 14 are sequentially stacked and assembled, the sticky layer 2 is pasted on the first bonding site 1413, the gold fingers of the first pressing area 311 and the first ITO PAD binding site 1411 are pressed and bound by the anisotropic conductive adhesive film, the gold fingers of the second pressing area 321 and the second ITO PAD binding site 1412 are pressed and bound by the anisotropic conductive adhesive film, and the first bonding site 1413, the sticky layer 2 and the second bonding site 34 are pressed together, thereby forming the fixed connection of the flexible circuit board 3 and the LCD display module 1.

[0046] In the utility model, unless otherwise specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection or communication with each other; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements or the interaction relationship between two elements, unless otherwise specified. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0047] Obviously, the above-described embodiments are only a part of the embodiments of the present application, rather than all the embodiments, and the preferred embodiments of the present application are given in the drawings, but do not limit the patent scope of the present application. The present application can be realized in many different forms, and conversely, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing specific embodiments, or equivalently replace some of the technical features. Any equivalent structure made by using the content of the present application specification and drawings, directly or indirectly used in other related technical fields, is also within the patent protection scope of the present application.

Claims

1. A liquid crystal display module structure with high tensile strength of a flexible circuit board, characterized in that, It includes: LCD display module (1) and flexible circuit board (3), the bottom of the LCD display module (1) extends the flexible circuit board connecting site, one end of the flexible circuit board (3) is bound to the flexible circuit board connecting site of LCD display module (1), and the other end is electrically connected with the main PCB board;The flexible circuit board connecting site and the flexible circuit board (3) are further provided with a sticky layer (2).

2. The structure of claim 1, wherein the flexible circuit board is made of a material having a tensile strength of 10 kgf / mm2 or more. The LCD display module (1) includes a circular first polaroid (11), a first glass sheet (12), a second glass sheet (13) and a second polaroid (14) in sequence, the second glass sheet (13) is larger than the first glass sheet (12), and the flexible circuit board connecting site is a connecting area (141) formed by the second glass sheet (13) protruding from the first glass sheet (12).

3. The structure of claim 2, wherein the flexible circuit board is made of a material having a tensile strength of 10 kgf / mm2 or more. The connecting area (141) is a reverse U-shaped protrusion formed by the second glass sheet (13) extending along the lower edge arc of the first glass sheet (12).

4. The structure of claim 3, wherein the flexible circuit board is made of a material having a tensile strength of 10 kgf / mm2 or more. The connecting area (141) is provided with an ITO PAD binding site, and the ITO PAD binding site is arranged on one side of the second glass sheet (13) facing the first glass sheet (12).

5. The structure of claim 4, wherein the flexible circuit board is made of a material having a tensile strength of 10 kgf / mm2 or more. The ITO PAD binding site includes a first ITO PAD binding site (1411) and a second ITO PAD binding site (1412), and the first ITO PAD binding site (1411) and the second ITO PAD binding site (1412) are arranged on the left and right sides of the connecting area (141).

6. The structure of claim 5, wherein the flexible circuit board is made of a material having a tensile strength of 10 kgf / mm2 or more. The flexible circuit board (3) includes a first connecting pin (31) and a second connecting pin (32), and the first connecting pin (31) and the second connecting pin (32) are arranged in a U-shaped bifurcation.

7. The structure of claim 6, wherein the flexible circuit board is made of a material having a tensile strength of 10 kgf / mm2 or more. The first connecting pin (31) is provided with a first pressing area (311), and the second connecting pin (32) is provided with a second pressing area (321).

8. The structure of claim 7, wherein the flexible circuit board is made of a material having a tensile strength of 10 kgf / mm2 or more. The first pressing area (311) and the second pressing area (321) are respectively pressed and bound with the first ITO PAD binding site (1411) and the second ITO PAD binding site (1412) through the opposite conductive adhesive film.

9. The structure of claim 7, wherein the flexible circuit board is made of a material having a tensile strength of 10 kgf / mm2 or more. The connecting area (141) further includes a first bonding site (1413), and the first bonding site (1413) is arranged between the first ITO PAD binding site (1411) and the second ITO PAD binding site (1412).

10. The structure of claim 9, wherein the flexible circuit board is made of a material having a tensile strength of 10 kgf / mm2 or more. The first connecting pin (31) and the second connecting pin (32) are provided with a second bonding site (34) corresponding to the first bonding site (1413).

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