Connecting structure of TFT (Thin Film Transistor) screen

Abstract

The utility model relates to the technical field of TFT screen assembly, in particular to a connecting structure of a TFT screen. The TFT screen is placed in a backlight containing cavity with an opening, and a PCB used for being connected with a driving IC of the TFT screen is detachably arranged on one side of the backlight rubber frame. According to the connecting structure of the TFT screen, when the TFT screen is connected, the PCB can be fixed into the backlight rubber frame firstly, then the FPC is inserted into the PCB, mounting and dismounting are convenient, and damage to the FPC and the PCB is not likely to be caused.

Description

Technical Field

[0001] The present application relates to the technical field of TFT screen assembly, and in particular to a connection structure of a TFT screen. Background Art

[0002] TFT screen (Thin Film Transistor) is a thin film transistor liquid crystal display screen. Each of its pixels is driven by a thin film transistor integrated behind it. This not only improves the response speed of the display screen, but also can accurately control the display color level, so the color of TFT liquid crystal is more realistic.

[0003] For large-sized TFT screens with more pixels, multiple driver ICs are often required to be cascaded and driven simultaneously, with each IC driving different pixels. A generally more economical solution is that each driver IC is bound to the TFT glass, and there is a connection FPC (flexible circuit board) underneath to lead out the drive signal. These FPCs are all connected to a PCB (printed circuit board). After the various signals led out by each driver IC are connected and processed on the PCB, they are connected to the main board through a unified interface. However, in the prior art, the PCB board is set on the back of the backlight. This setting method makes the installation and disassembly of the driver IC and PCB of the TFT screen inconvenient and the cost is also high. Utility Model Content

[0004] In order to solve the deficiencies in the prior art, the purpose of the present application is to provide a connection structure of a TFT screen to solve the problem of inconvenient disassembly of a driver IC and a PCB.

[0005] To achieve the above objectives, the present application provides a connection structure of a TFT screen, wherein the TFT screen is placed in a backlight placement cavity with an opening, and a PCB board for connecting to a driver IC of the TFT screen is detachably provided on one side of the backlight glue frame of the backlight.

[0006] Furthermore, a placement groove is provided on one side of the backlight glue frame of the backlight, and the PCB board is detachably arranged in the placement groove.

[0007] Furthermore, a clamping groove is provided on the PCB board, and a clamping hook adapted to the clamping groove for fixing the PCB board is provided in the placement groove.

[0008] Furthermore, a plurality of the hooks are arranged in the placement slot.

[0009] Furthermore, two of the hooks are symmetrically arranged on both sides of the placement groove.

[0010] Furthermore, the PCB board includes a first plane and a second plane that are opposite to each other, the first plane is arranged at the bottom of the placement groove, and the second plane is provided with an FPC connector.

[0011] Furthermore, the driver IC is connected to the FPC connector on the PCB board via the FPC.

[0012] Furthermore, the PCB board is also provided with an FPC slot for the FPC to pass through the PCB board.

[0013] Furthermore, a positioning column is provided in the placement groove, and a positioning hole corresponding to the positioning column is provided on the PCB board.

[0014] Furthermore, two positioning columns are provided.

[0015] The connection structure of the TFT screen of the present application can detachably fix the PCB board by means of positioning columns and buckles, which is convenient for installation and disassembly.

[0016] The connection structure of the TFT screen of the present application can first fix the PCB board to the backlight glue frame, and then plug the FPC into the PCB board. The connection is convenient and efficient, and it is not easy to cause damage to the FPC and PCB board.

[0017] In the connection structure of the TFT screen of the present application, the PCB board is arranged on the side of the backlight glue frame. Compared with the structure in which the PCB board is arranged on the back of the backlight, the connection length of the FPC is greatly shortened and the cost is reduced.

[0018] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent from the description, or may be understood by practicing the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the accompanying drawings:

[0020] Figure 1 A top view of the connection structure of the TFT screen of Example 1 of the present application;

[0021] Figure 2 for Figure 1 Front view of

[0022] Figure 3 for Figure 1 Right view of;

[0023] Figure 4 It is a structural diagram of the PCB board;

[0024] In the figure: 1-TFT screen, 2-backlight glue frame, 3-placement slot, 4-PCB board, 5-hook, 6-clip slot, 7-driver IC, 8-FPC connector, 9-FPC, 10-positioning column, 11-positioning hole, 12-FPC slot, 13-PCB connector. DETAILED DESCRIPTION

[0025] The embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be construed as being limited to the embodiments described herein. Instead, these embodiments are provided to provide a more thorough and complete understanding of the present application. It should be understood that the drawings and embodiments of the present application are only for exemplary purposes and are not intended to limit the scope of protection of the present application.

[0026] It should be understood that the various steps described in the method implementation of the present application can be performed in different orders and / or performed in parallel. In addition, the method implementation may include additional steps and / or omit the steps shown. The scope of the present application is not limited in this respect.

[0027] The term "including" and its variations used herein are open inclusions, i.e., "including but not limited to". The term "based on" means "based at least in part on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". The relevant definitions of other terms will be given in the following description.

[0028] It should be noted that the modifications of "one" and "plurality" mentioned in this application are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more". "Plurality" should be understood as two or more.

[0029] Hereinafter, embodiments of the present application will be described in detail with reference to the accompanying drawings.

[0030] Example 1

[0031] An embodiment of the present application provides a connection structure of a TFT screen. Figure 1-4 The connection structure of the TFT screen of this application is described in detail:

[0032] See 1- Figure 3 The TFT screen 1 is placed in a backlight placement cavity with an opening, and a PCB board 4 for connecting with a driving IC 7 of the TFT screen 1 is detachably provided on one side of the backlight glue frame 2 of the backlight.

[0033] In this embodiment, a placement groove 3 is provided on one side of the backlight plastic frame 2 , and the PCB board 4 is detachably disposed in the placement groove 3 .

[0034] It can be understood that the placement groove 3 is arranged on a side close to the driver IC 7, which shortens the distance between the driver IC 7 and the PCB board 4, thereby shortening the length of the FPC and reducing the cost.

[0035] In this embodiment, a snap-in groove 6 is provided on the PCB board 4 , and a snap-in hook 5 adapted to the snap-in groove 6 for fixing the PCB board 4 is provided in the placement groove 3 .

[0036] In this embodiment, two hooks 5 are symmetrically arranged on both sides of the placement slot 3 .

[0037] In some other embodiments, the number and positions of the hooks 5 can be adaptively adjusted according to the size of the TFT screen 1 .

[0038] In this embodiment, the PCB board 4 includes a first plane and a second plane that are opposite to each other. The first plane is arranged at the bottom of the placement slot 3 , and the FPC connector 8 and the PCB connector 13 are arranged on the second plane.

[0039] In this embodiment, the driver IC 7 is connected to the FPC connector 8 on the PCB board 4 through the FPC 9 .

[0040] In this embodiment, the PCB board 4 is further provided with an FPC slot 12 for the FPC 9 to pass through the PCB board 4 .

[0041] In this embodiment, a positioning column 10 is further provided in the placement groove 3 , and a positioning hole 11 corresponding to the positioning column 10 is further provided on the PCB board 4 .

[0042] In this embodiment, two positioning posts 10 are provided.

[0043] In some other embodiments, the number and positions of the positioning posts 10 may be adaptively adjusted according to the size of the TFT screen 1 and the size of the PCB board 4 to fix the PCB board 4 .

[0044] It can be understood that the backlight glue frame 2 is made of elastic material.

[0045] In this embodiment, the positioning column 10 and the hook 5 are integrally formed with the backlight adhesive frame 2 .

[0046] The working process of the embodiment of the present application is as follows: when it is necessary to connect the PCB board 4 and the TFT screen 1, first fix the PCB board 4 to the placement slot 3 of the backlight plastic frame 2 through the positioning column 10 and the hook 5, and then plug the driver IC of the TFT screen 1 into the FPC connector 8 of the PCB4 through the FPC to complete the connection between the PCB board 4 and the TFT screen 1; when disassembling, first unplug the FPC from the FPC connector 8 of the PCB4, and then pull out the PCB board 4 from the placement slot 3 to complete the disassembly.

[0047] The above description is only a partial embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of disclosure involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above disclosed concept. For example, the above features are replaced with the technical features with similar functions disclosed in this application (but not limited to) by each other to form a technical solution.

[0048] In addition, although each operation is described in a specific order, this should not be construed as requiring these operations to be performed in the specific order shown or in a sequential order. Under certain circumstances, multitasking and parallel processing may be advantageous. Similarly, although some specific implementation details are included in the above discussion, these should not be construed as limiting the scope of the application. Some features described in the context of a separate embodiment can also be implemented in a single embodiment in combination. On the contrary, the various features described in the context of a single embodiment can also be implemented in multiple embodiments individually or in any suitable sub-combination mode.

[0049] Although the subject matter has been described in language specific to structural features and / or methodological logical actions, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. On the contrary, the specific features and actions described above are merely example forms of implementing the claims.

Claims

1. A connection structure of a TFT screen, characterized in that: The TFT screen is placed in a backlight placement cavity provided with an opening, and a PCB board for connecting with a driving IC of the TFT screen is detachably provided on one side of a backlight glue frame of the backlight.

2. The connection structure of the TFT screen according to claim 1, characterized in that: A placement groove is arranged on one side of the backlight glue frame of the backlight, and the PCB board is detachably arranged in the placement groove.

3. The connection structure of the TFT screen according to claim 2, characterized in that: The PCB board is provided with a clamping groove, and the placement groove is provided with a clamping hook adapted to the clamping groove to fix the PCB board.

4. The connection structure of the TFT screen according to claim 3, characterized in that: A plurality of the hooks are arranged in the placement slot.

5. The connection structure of the TFT screen according to claim 3, characterized in that: The hooks are symmetrically arranged in two on both sides of the placement groove.

6. The connection structure of the TFT screen according to claim 2, characterized in that: The PCB board comprises a first plane and a second plane which are opposite to each other. The first plane is arranged at the bottom of the placement slot, and the second plane is provided with an FPC connector.

7. The connection structure of the TFT screen according to claim 6, characterized in that: The driver IC is connected to the FPC connector on the PCB board through the FPC.

8. The connection structure of the TFT screen according to claim 7, characterized in that: The PCB board is also provided with an FPC slot for the FPC to pass through the PCB board.

9. The connection structure of the TFT screen according to claim 2, characterized in that: A positioning column is also arranged in the placement groove, and a positioning hole corresponding to the positioning column is also arranged on the PCB board.

10. The connection structure of the TFT screen according to claim 9, characterized in that: Two positioning columns are provided.

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