FPC binding area structure of narrow-edge liquid crystal display screen

Abstract

The utility model discloses an FPC binding area structure of a narrow-edge liquid crystal display screen, which comprises an LCD liquid crystal display screen and a main screen FPC, one end of the main screen FPC is provided with a first binding position, a driving IC and an ITOPAD, the driving IC and the ITOPAD are arranged on the LCD liquid crystal display screen, the first binding position and the ITOPAD are bound in an aligned mode, the left side and the right side of the top end of the main screen FPC are fixedly connected with protrusions, and the protrusions are fixedly connected with the main screen FPC. The protrusions are flush with the side, facing the driving IC, of the ITOPAD. According to the FPC binding area structure of the narrow-edge liquid crystal display screen, the first metal PIN on the first binding position of the main screen FPC is conducted with the second metal PIN of the ITOPAD, the protrusions are fixedly connected to the left side and the right side of the top end of the main screen FPC, the edge of the protruding area is flush with the edge, facing the side of the driving IC, of the ITOPAD on the lower glass substrate, and therefore the FPC binding area structure of the narrow-edge liquid crystal display screen is formed. Therefore, the distance between the edge of the main screen FPC and the first alignment mark can be increased, the first alignment mark is prevented from being deformed or damaged in the shape punching process of the main screen FPC, and the binding yield of the main screen FPC is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid crystal display screens, and particularly relates to an FPC binding area structure of a narrow-edge liquid crystal display screen. Background Art

[0002] Liquid crystal display devices have been widely used in various information, communication, and consumer electronic products due to their advantages such as light weight, small volume, and low power consumption. A liquid crystal display module is the core display device in a liquid crystal display device, and the liquid crystal display module mainly consists of a backlight and a liquid crystal display screen. A main screen FPC is bound to the liquid crystal display screen, and one end of the main screen FPC facing the liquid crystal display screen is fixed to the liquid crystal display screen.

[0003] As Figure 1 In the shown liquid crystal display screen, an FPC and a driving IC need to be bound on the lower glass sheet. In order to reduce the width of the area for binding the driving IC and the FPC, the FPC binding area is designed to the limit. Since a spacing needs to be reserved between the edge of the FPC facing the driving IC side and the edge of the ITOPAD for effect confirmation after binding the FPC, and at the same time, due to binding the FPC, the lower glass sheet needs to be edge-ground. In this case, the distance between the "one" of the alignment mark 111 of the FPC and the top edge 112 of the FPC is too small, and the alignment mark is easily damaged or deformed during the outer shape punching process of the FPC production, affecting the binding of the FPC. Content of the Utility Model

[0004] Based on this, in view of the above technical problems, it is necessary to provide an FPC binding area structure of a narrow-edge liquid crystal display screen. The first metal PIN of the first binding position on the main screen FPC is electrically connected to the second metal PIN of the ITOPAD. Since convex portions are fixedly connected to both the left and right sides of the top end of the main screen FPC, and the edge of the convex portion area is flush with the edge of the ITOPAD on the lower glass substrate facing the driving IC side, the distance between the edge of the main screen FPC and the first alignment mark can be increased, preventing the first alignment mark from being deformed or damaged during the outer shape punching process of the main screen FPC, and improving the binding yield of the main screen FPC.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] An FPC binding area structure of a narrow-edge liquid crystal display screen, comprising:

[0007] An LCD liquid crystal display screen and a main screen FPC. One end of the main screen FPC is provided with a first binding position, a driving IC and an ITOPAD arranged on the LCD liquid crystal display screen. The first binding position is bound in alignment with the ITOPAD. Convex portions are fixedly connected to both the left and right sides of the top end of the main screen FPC, and the convex portions are flush with one side of the ITOPAD facing the driving IC.

[0008] Further, the LCD liquid crystal display screen includes a polarizer, an upper glass substrate, a lower glass substrate, and a lower polarizer that are connected in sequence. A liquid crystal cell is disposed between the upper glass substrate and the lower glass substrate, and the driving IC and the ITOPAD are both disposed on the lower glass substrate.

[0009] Further, the first binding position includes a first metal PIN foot installed at the top end of the main screen FPC, and first alignment marks are disposed on both the left and right sides of the first metal PIN foot.

[0010] Further, the ITOPAD includes a second metal PIN foot disposed on the lower glass substrate. Second alignment marks are disposed on both the left and right sides of the second metal PIN foot. The first metal PIN foot is fixedly connected to the second metal PIN foot. The positions of the first alignment marks and the second alignment marks correspond to each other. The left and right sides of the second alignment marks protrude from the left and right sides of the first alignment marks. The first alignment marks and the second alignment marks are both rectangularly arranged, which is convenient for positioning when the main screen FPC is bound to the LCD liquid crystal display screen.

[0011] Further, the protrusion includes a straight edge flush with the side of the first metal PIN foot close to the driving IC, and an inclined edge is disposed between the straight edge and the first metal PIN foot.

[0012] Further, the driving IC is located above the ITOPAD.

[0013] Further, the width between the upper and lower sides of the protrusion is.-mm.

[0014] Further, both the first alignment marks and the second alignment marks are one of copper marks or silk screen marks.

[0015] Further, the driving IC and the first binding position are covered with protective silicone, and the protective silicone is used to protect the circuit between the driving IC and the first binding position from moisture intrusion.

[0016] Further, a connector is disposed on the main screen FPC, and the connector is located at the bottom end of the main screen FPC.

[0017] Compared with the prior art, the present utility model has the following beneficial effects:

[0018] The FPC binding area structure of the narrow-bezel liquid crystal display provided by the present utility model. The narrow-bezel liquid crystal display includes a polarizer, an upper glass substrate, a lower glass substrate, and a lower polarizer from left to right. Liquid crystal is filled between the two glass substrates to form a cell. The driving IC and the main screen FPC are bound to the lower glass substrate. At this time, the first metal PIN on the first binding position of the main screen FPC is electrically connected to the second metal PIN of the ITOPAD. Since both the left and right sides of the top of the main screen FPC are fixedly connected with protrusions, and the edges of the protrusion area are flush with the edges of the ITOPAD on the lower glass substrate facing the driving IC side, the distance between the edge of the main screen FPC and the first alignment mark can be increased, preventing the first alignment mark from being deformed or damaged during the die-cutting process of the main screen FPC, and improving the binding yield of the main screen FPC. Description of the Drawings

[0019] Figure 1 Schematic diagram of the FPC binding structure of the existing liquid crystal display provided by the present utility model;

[0020] Figure 2 Front view structure schematic diagram of the FPC binding area structure of the narrow-bezel liquid crystal display provided by the present utility model;

[0021] Figure 3 For the FPC binding area structure of the narrow-bezel liquid crystal display provided by the present utility model Figure 2 Enlarged schematic diagram at position B;

[0022] Figure 4 Right view schematic diagram of the FPC binding area structure of the narrow-bezel liquid crystal display provided by the present utility model;

[0023] Figure 5 Schematic diagram of the main screen FPC of the FPC binding area structure of the narrow-bezel liquid crystal display provided by the present utility model;

[0024] Figure 6 Schematic diagram of the protective silicone provided in the FPC binding area structure of the narrow-bezel liquid crystal display provided by the present utility model.

[0025] The markings in the figure are explained as follows:

[0026] 1. LCD liquid crystal display; 2. Main screen FPC; 3. First binding position; 4. Driving IC; 5. ITOPAD; 6. Protrusion; 7. Protective silicone; 101. Polarizer; 102. Upper glass substrate; 103. Lower glass substrate; 104. Lower polarizer; 105. Liquid crystal cell; 201. First metal PIN; 202. First alignment mark; 203. Connector; 501. Second metal PIN; 502. Second alignment mark; 601. Straight edge; 602. Oblique edge. Detailed Embodiment

[0027] To enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0028] As described in the background art, for the FPC in the existing liquid crystal display binding, the distance between the alignment mark and the top edge of the FPC is too small, and the alignment mark is easily damaged or deformed during the outer shape punching process of the FPC manufacturing, affecting the binding of the FPC.

[0029] To solve this technical problem, the present utility model provides an FPC binding area structure for a narrow-edge liquid crystal display. By fixedly connecting protrusions 6 to both the left and right sides of the top end of the main screen FPC 2, the edge of the protrusion 6 area is flush with the edge of the ITOPAD 5 on the lower glass substrate 103 facing the driving IC 4 side, so as to increase the distance between the edge of the main screen FPC 2 and the first alignment mark 202, and prevent the first alignment mark 202 from being deformed or damaged during the outer shape punching process of the main screen FPC 2.

[0030] Specifically, please refer to Figure 2-5 , the FPC binding area structure of the narrow-edge liquid crystal display specifically includes:

[0031] An LCD liquid crystal display 1 and a main screen FPC 2. The thickness of the main screen FPC 2 is 100 - 120 um. The main screen FPC 2 includes a PI layer, and the PI layer is a resin layer made of a photosensitive group-containing polyimide material and a solvent, and the PI layer has good high-temperature resistance and good flexibility. One end of the main screen FPC 2 is provided with a first binding position 3; a driving IC 4 and an ITOPAD 5 are arranged on the LCD liquid crystal display 1, the first binding position 3 is bound in alignment with the ITOPAD 5, and protrusions 6 are fixedly connected to both the left and right sides of the top end of the main screen FPC 2, and the protrusions 6 are flush with the side of the ITOPAD 5 facing the driving IC 4.

[0032] The utility model provides an FPC binding area structure of a narrow-edge liquid crystal display screen, wherein the narrow-edge liquid crystal display screen comprises, from left to right, an upper polarizer 101, an upper glass substrate 102, a lower glass substrate 103 and a lower polarizer 104, a liquid crystal is poured into a box between the two glass substrates, wherein a driver IC4 and a main screen FPC2 are bound to the lower glass substrate 103, at which time a first metal PIN foot 201 on a first binding position 3 of the main screen FPC2 is connected to a second metal PIN foot 501 of ITOPAD5, and since both left and right sides of the top of the main screen FPC2 are fixedly connected with protrusions 6, the edge of the protrusion 6 area is flush with the edge of the ITOPAD5 on the lower glass substrate 103 facing the driver IC4, thereby increasing the distance between the edge of the main screen FPC2 and the first alignment mark 202, preventing the first alignment mark 202 from being deformed or damaged during the punching process of the main screen FPC2, and improving the binding yield of the main screen FPC2.

[0033] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0034] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0035] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0036] Please refer to Figure 1-3 , an FPC binding area structure of a narrow-edge liquid crystal display screen, comprising an LCD screen 1 and a main screen FPC2, the thickness of the main screen FPC2 is 100-120um, the main screen FPC2 comprises a PI layer, the PI layer is a resin layer made of a polyimide material having a photosensitive group and a solvent, and the PI layer has good high temperature resistance and good softness, a first binding position 3 is arranged at one end of the main screen FPC2; a driving IC4 and an ITOPAD5 are arranged on the LCD screen 1, the first binding position 3 is aligned and bound with the ITOPAD5, and protrusions 6 are fixedly connected to the left and right sides of the top of the main screen FPC2, and the protrusions 6 are flush with the side of the ITOPAD5 facing the driving IC4.

[0037] Please refer to Figure 2-5, for the narrow - bezel liquid crystal display screen, from left to right are the upper polarizer 101, the upper glass substrate 102, the lower glass substrate 103, and the lower polarizer 104. A liquid crystal cell is formed by filling liquid crystal between the two glass substrates. Among them, the driving IC 4 and the main screen FPC 2 are bonded to the lower glass substrate 103. At this time, the first metal PIN pin 201 on the first bonding position 3 of the main screen FPC 2 is electrically connected to the second metal PIN pin 501 of the ITOPAD 5. Since both the left and right sides of the top end of the main screen FPC 2 are fixedly connected with protrusions 6, and the edges of the protrusion 6 area are flush with the edges of the ITOPAD 5 on the lower glass substrate 103 facing the driving IC 4 side, the distance between the edge of the main screen FPC 2 and the first alignment mark 202 can be increased, preventing the first alignment mark 202 from being deformed or damaged during the die - cutting process of the main screen FPC 2's outer shape.

[0038] Further optimize the FPC bonding area structure of the narrow - bezel liquid crystal display screen provided in Embodiment 1. Specifically, as Figure 2 , Figure 3 and Figure 4 shown, the LCD liquid crystal display screen 1 includes an upper polarizer 101, an upper glass substrate 102, a lower glass substrate 103, and a lower polarizer 104 connected in sequence. A liquid crystal cell 105 is provided between the upper glass substrate 102 and the lower glass substrate 103. The driving IC 4 and the ITOPAD 5 are both provided on the lower glass substrate 103, and the driving IC 4 is used to drive the operation of the LCD liquid crystal display screen 1;

[0039] The first bonding position 3 includes a first metal PIN pin 201 installed at the top end of the main screen FPC 2. First alignment marks 202 are provided on both the left and right sides of the first metal PIN pin 201. The ITOPAD 5 includes a second metal PIN pin 501 provided on the lower glass substrate 103. Second alignment marks 502 are provided on both the left and right sides of the second metal PIN pin 501. The first metal PIN pin 201 is fixedly connected to the second metal PIN pin 501. The positions of the first alignment mark 202 and the second alignment mark 502 correspond to each other. The left and right sides of the second alignment mark 502 protrude from the left and right sides of the first alignment mark 202. Both the first alignment mark 202 and the second alignment mark 502 are rectangularly arranged, which is convenient for positioning when the main screen FPC 2 is bonded to the LCD liquid crystal display screen 1.

[0040] It can be understood that the left - right symmetric setting of the first alignment mark 202 and the second alignment mark 502, and the first bonding position 3 is located between the first alignment mark 202 and the second alignment mark 502. In this way, the reliability of the connection of the main screen FPC 2 can be further ensured, avoiding deviation. The first metal PIN pin 201 and the second metal PIN pin 501 are fixedly connected for conduction. In this way, compared with the traditional connection method using soldering paste, problems such as poor soldering, virtual soldering, and solder pile - up due to excessive solder paste can be avoided, and at the same time, disassembly and repair are convenient;

[0041] Both the first alignment mark 202 and the second alignment mark 502 are of one-piece structure, which can bind the main screen FPC2 to the LCD liquid crystal display screen 1 at one time, reducing the number of bindings and thus saving production processes. Moreover, the integrated structure is more stable, avoiding the cracking of the main screen FPC2 due to stress and improving the product quality.

[0042] The FPC binding area structure of the narrow-bezel liquid crystal display screen provided in Embodiment 1 or 2 is further optimized. For example, Figure 3 and Figure 5 As shown, the protrusion 6 includes a straight edge 601 flush with the side of the first metal PIN 201 close to the driving IC4. A bevel edge 602 is provided between the straight edge 601 and the first metal PIN 201. The driving IC4 is located above the ITOPAD5. The width between the upper and lower sides of the protrusion 6 is 0.2 - 1 mm. In this way, the corresponding effect can be achieved, and it will not occupy too much area of the main screen FPC, preventing the deformation or damage of the first alignment mark 202 during the die-cutting process of the main screen FPC2.

[0043] In the FPC binding area structure of the narrow-bezel liquid crystal display screen provided in the above embodiments, the first alignment mark 202 and the second alignment mark 502 are both one of copper marks or silk screen marks, so that copper marks formed by etching or silk screen marks formed by screen printing during production;

[0044] For example, Figure 6 As shown, the driving IC4 and the first binding position 3 are covered with a protective silica gel 7. The protective silica gel 7 is provided to protect the circuit between the driving IC4 and the first binding position 3 from water vapor intrusion and improve the use safety;

[0045] For example, Figure 5 As shown, a connector 203 is provided on the main screen FPC2. The connector 203 is located at the bottom end of the main screen FPC2. With such a structural design, the connector 203 is located at the end of the main screen FPC2. By providing the connector 203, during the assembly process of the liquid crystal display screen, the main screen FPC2 can be quickly connected to the corresponding main board, which is very convenient;

[0046] An ITO trace is also provided on the LCD liquid crystal display screen 1. The ITO trace is connected to the driving IC4. It should be noted that the ITO trace is located above the driving IC4. The ITO trace outputs a driving signal to the display area to display relevant pictures, and the FPC is connected to the main board of the watch or bracelet. The main board transmits relevant power and driving timing signals through the FPC to make the driving IC4 work normally.

[0047] The using process of the FPC binding area structure of the narrow-bezel liquid crystal display screen provided by the present utility model is as follows:

[0048] The narrow-edge liquid crystal display screen includes a polarizer 101, an upper glass substrate 102, a lower glass substrate 103, and a lower polarizer 104 from left to right. A liquid crystal cell is formed by injecting liquid crystal between the two glass substrates. The driving IC 4 and the main screen FPC 2 are bonded to the lower glass substrate 103. At this time, the first metal PIN pin 201 on the first bonding position 3 of the main screen FPC 2 is electrically connected to the second metal PIN pin 501 of the ITOPAD 5. Since the left and right sides of the top end of the main screen FPC 2 are fixedly connected with protrusions 6, the edge of the protrusion 6 area is flush with the edge of the ITOPAD 5 on the lower glass substrate 103 facing the driving IC 4 side, so as to increase the distance between the edge of the main screen FPC 2 and the first alignment mark 202, prevent the first alignment mark 202 from being deformed or damaged during the die-cutting process of the main screen FPC 2, and improve the bonding yield of the main screen FPC 2.

[0049] In the present invention, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection, an electrical connection or communication with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0050] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. The drawings show the preferred embodiments of the present invention, but do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosed content of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing specific embodiments, or perform equivalent replacements for some of the technical features. Any equivalent structure directly or indirectly using the content of the specification and drawings of the present invention in other related technical fields is similarly within the scope of the patent protection of the present invention.

Claims

1. An FPC binding area structure of a narrow-edge liquid crystal display, characterized in that: It includes: An LCD display screen (1) and a main screen FPC (2), wherein one end of the main screen FPC (2) is provided with a first binding position (3); A driver IC (4) and an ITOPAD (5) are arranged on an LCD liquid crystal display screen (1), wherein the first binding position (3) is aligned and bound to the ITOPAD (5), and protrusions (6) are fixedly connected to both left and right sides of the top of the main screen FPC (2), and the protrusions (6) are flush with a side of the ITOPAD (5) facing the driver IC (4).

2. The FPC binding area structure of the narrow-edge liquid crystal display according to claim 1, characterized in that: The LCD liquid crystal display screen (1) comprises an upper polarizer (101), an upper glass substrate (102), a lower glass substrate (103) and a lower polarizer (104) which are connected in sequence; a liquid crystal box (105) is arranged between the upper glass substrate (102) and the lower glass substrate (103); and the driver IC (4) and ITOPAD (5) are both arranged on the lower glass substrate (103).

3. The FPC binding area structure of the narrow-edge liquid crystal display according to claim 2, characterized in that: The first binding position (3) comprises a first metal PIN pin (201) mounted on the top of the main screen FPC (2), and first alignment marks (202) are arranged on both left and right sides of the first metal PIN pin (201).

4. The FPC binding area structure of the narrow-edge liquid crystal display according to claim 3, characterized in that: The ITOPAD (5) comprises a second metal PIN pin (501) arranged on the lower glass substrate (103); second alignment marks (502) are arranged on both the left and right sides of the second metal PIN pin (501); the first metal PIN pin (201) is fixedly connected to the second metal PIN pin (501); the positions of the first alignment marks (202) and the second alignment marks (502) correspond to each other; the left and right sides of the second alignment marks (502) protrude from the left and right sides of the first alignment marks (202); the first alignment marks (202) and the second alignment marks (502) are both arranged in a rectangular shape, so as to facilitate positioning when the main screen FPC (2) is bound to the LCD liquid crystal display screen (1).

5. The FPC binding area structure of the narrow-edge liquid crystal display according to claim 4, characterized in that: The protrusion (6) comprises a straight edge (601) flush with a side of the first metal PIN foot (201) close to the driver IC (4), and a bevel edge (602) is provided between the straight edge (601) and the first metal PIN foot (201).

6. The FPC binding area structure of the narrow-edge liquid crystal display according to claim 5, characterized in that: The driver IC (4) is located on the upper side of the ITOPAD (5).

7. The FPC binding area structure of a narrow-edge liquid crystal display according to claim 5, characterized in that: The width between the upper and lower sides of the protrusion (6) is 0.2-1 mm.

8. The FPC binding area structure of a narrow-edge liquid crystal display according to claim 1, characterized in that: The first pair of position marks (202) and the second pair of position marks (502) are both copper marks or silk-screen marks.

9. The FPC binding area structure of a narrow-edge liquid crystal display according to claim 8, characterized in that: The driver IC (4) and the first binding position (3) are covered with protective silica gel (7), and the protective silica gel (7) is used to protect the circuit between the driver IC (4) and the first binding position (3) from being invaded by water vapor.

10. The FPC binding area structure of a narrow-edge liquid crystal display according to claim 9, characterized in that: The main screen FPC (2) is provided with a connector (203), and the connector (203) is located at the bottom end of the main screen FPC (2).

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