Liquid crystal display screen capable of improving positioning efficiency

Abstract

The utility model discloses a liquid crystal display capable of improving positioning efficiency, which comprises a backlight rubber frame, a PCB (Printed Circuit Board), a backlight module and a TFT (Thin Film Transistor) module, the backlight rubber frame comprises a bottom plate and a side wall extending upwards from the edge of the bottom plate, and at least three positioning columns are arranged on the lower surface of the bottom plate; the PCB is arranged on the lower surface of the bottom plate, first positioning holes corresponding to the positioning columns in position and number are formed in the PCB, and the height of the positioning columns is larger than the thickness of the PCB; the backlight module is arranged on the upper surface of the bottom plate; the TFT module is arranged above the backlight module, an FPC is led out of the TFT module, the FPC is bent to the lower surface of the PCB, second positioning holes corresponding to the positioning columns in position are formed in the FPC, and the number of the second positioning holes is two. The positioning efficiency of the FPC is improved, the operation time and cost are reduced, and the competitiveness of the product is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid crystal display, and more specifically to a liquid crystal display screen with improved positioning efficiency. Background Art

[0002] A PCB board is arranged under the traditional backlight module, and an FPC is led out to the TFT module. The FPC is bent to the bottom of the PCB board, and the PCB board is positioned by the positioning columns of the lower frame. There are positioning through holes on the PCB board, and there are corresponding positioning through holes on the FPC. Before the pins of the FPC interface are soldered to the pads on the PCB, they need to be manually aligned with the positioning through holes on the left and right of the FPC and the positioning through holes on the PCB. Although this structure can also achieve positioning, the positioning efficiency is low. Utility Model Content

[0003] The technical problem to be solved by the utility model is how to improve the positioning efficiency of FPC, thereby reducing operation time and cost and improving the competitiveness of products.

[0004] The technical problem to be solved by the utility model is achieved through the following technical solutions:

[0005] In order to solve the above technical problems, the utility model provides a liquid crystal display screen with improved positioning efficiency, which includes a backlight glue frame, a PCB board, a backlight module and a TFT module, the backlight glue frame includes a bottom plate and a side wall extending upward from the edge of the bottom plate, and at least three positioning posts are arranged on the lower surface of the bottom plate; the PCB board is arranged on the lower surface of the bottom plate, and the PCB board is provided with first positioning holes corresponding to the positions and numbers of the positioning posts, and the height of the positioning posts is greater than the thickness of the PCB board; the backlight module is arranged on the upper surface of the bottom plate; the TFT module is arranged above the backlight module, and an FPC is led outward from the TFT module, and the FPC is bent to the lower surface of the PCB board, and the FPC is provided with second positioning holes corresponding to the positions of the positioning posts, and there are two second positioning holes.

[0006] As a preferred implementation of the liquid crystal display screen with improved positioning efficiency provided by the utility model, the diameter of the second positioning hole is 0.1 mm larger than the diameter of the positioning column.

[0007] As a preferred embodiment of the liquid crystal display screen with improved positioning efficiency provided by the utility model, there are three positioning columns, including two first positioning columns and one second positioning column, the two first positioning columns are arranged at the bend close to the FPC and located at the edge of the lower surface of the base plate, and the second positioning column is arranged at the bend away from the FPC.

[0008] As a preferred implementation of the liquid crystal display screen with improved positioning efficiency provided by the utility model, a traceability label paper is provided on the surface of the FPC.

[0009] As a preferred implementation of the liquid crystal display screen with improved positioning efficiency provided by the utility model, shielding paper is provided on the surface of the FPC, and the shielding paper covers the surface of the FPC and the traceability label paper.

[0010] As a preferred implementation of the liquid crystal display screen with improved positioning efficiency provided by the utility model, the shielding paper includes a shielding layer, a glue layer and a non-adhesive layer stacked in sequence from top to bottom, the size and position of the non-adhesive layer correspond to the size and position of the traceability label paper, the non-adhesive layer covers the traceability label paper, and the glue layer covers the surface of the FPC.

[0011] As a preferred implementation of the liquid crystal display screen with improved positioning efficiency provided by the utility model, the thickness of the non-adhesive layer is 0.03mm-0.06mm.

[0012] As a preferred implementation of the liquid crystal display screen with improved positioning efficiency provided by the utility model, the edge of the non-adhesive layer exceeds the edge of the traceability label paper by 1.5 mm to 3 mm.

[0013] As a preferred implementation of the liquid crystal display screen with improved positioning efficiency provided by the utility model, the non-adhesive layer and the shielding layer have different appearance colors.

[0014] As a preferred implementation of the liquid crystal display screen with improved positioning efficiency provided by the utility model, the color of the non-adhesive layer is white, and the color of the shielding layer is black.

[0015] The utility model has the following beneficial effects:

[0016] Since the height of the positioning column is greater than the thickness of the PCB board, when the first positioning hole on the PCB board is sleeved on the positioning column, the positioning column is still a certain distance higher than the PCB board. When the FPC is bent to the back of the PCB board, the second positioning hole and two of the positioning columns can be used for positioning and fixing, thereby improving the positioning efficiency of the FPC, reducing operation time and cost, and improving product competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the scheme in the present application, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 The utility model provides a structural schematic diagram of a liquid crystal display screen for improving positioning efficiency.

[0019] Figure 2 for Figure 1 Top view of the backlit plastic frame.

[0020] Figure 3 for Figure 1 Bottom view of the medium backlit plastic frame.

[0021] Figure 4 for Figure 1 Bottom view of .

[0022] Figure 5 for Figure 4 Bottom view of the PCB board.

[0023] Figure 6 for Figure 4 Bottom view of the FPC.

[0024] Figure 7 Schematic diagram of the improved structure of FPC.

[0025] Figure 8 for Figure 7 Schematic diagram of the structure of shielding paper.

[0026] Fig. 9 Schematic diagram of the stacked structure of shielding paper.

[0027] Description of Figure Numbers:

[0028] Backlight plastic frame 1; PCB board 2; TFT module 3; bottom plate 11; side wall 12; positioning column 13; first positioning hole 21; FPC 4; second positioning hole 41;

[0029] A first positioning column 131; a second positioning column 132;

[0030] Traceability label paper 5; shielding paper 6; shielding layer 61; glue layer 62; non-adhesive layer 63. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", and "third" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0034] The utility model provides a liquid crystal display screen with improved positioning efficiency, which comprises a backlight glue frame, a PCB board, a backlight module and a TFT module, wherein the backlight glue frame comprises a bottom plate and a side wall extending upward from the edge of the bottom plate, and at least three positioning posts are arranged on the lower surface of the bottom plate; the PCB board is arranged on the lower surface of the bottom plate, and first positioning holes corresponding to the positions and numbers of the positioning posts are opened on the PCB board, and the height of the positioning posts is greater than the thickness of the PCB board; the backlight module is arranged on the upper surface of the bottom plate; the TFT module is arranged above the backlight module, and an FPC is led outward from the TFT module, and the FPC is bent to the lower surface of the PCB board, and second positioning holes corresponding to the positions of the positioning posts are opened on the FPC, and there are two second positioning holes.

[0035] Since the height of the positioning column is greater than the thickness of the PCB board, when the first positioning hole on the PCB board is sleeved on the positioning column, the positioning column is still a certain distance higher than the PCB board. When the FPC is bent to the back of the PCB board, the second positioning hole and two of the positioning columns can be used for positioning and fixing, thereby improving the positioning efficiency of the FPC, reducing operation time and cost, and improving product competitiveness.

[0036] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings. The present invention is described in detail below in conjunction with the accompanying drawings and embodiments, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limitations on the present invention.

[0037] See also Figures 1 to 6 , a liquid crystal display screen with improved positioning efficiency provided by the utility model, comprising a backlight glue frame 1, a PCB board 2, a backlight module and a TFT module 3, the backlight glue frame 1 comprising a bottom plate 11 and a side wall 12 extending upward from the edge of the bottom plate 11, at least three positioning posts 13 are arranged on the lower surface of the bottom plate 11; the PCB board 2 is arranged on the lower surface of the bottom plate 11, and first positioning holes 21 corresponding to the positions and numbers of the positioning posts 13 are opened on the PCB board 2, and the height of the positioning posts 13 is greater than the thickness of the PCB board 2; the backlight module is arranged on the upper surface of the bottom plate 11; the TFT module 3 is arranged above the backlight module, and an FPC 4 is led outward from the TFT module 3, and the FPC 4 is bent to the lower surface of the PCB board 2, and second positioning holes 41 corresponding to the positions of the positioning posts 13 are opened on the FPC4, and there are two second positioning holes 41. Since the height of the positioning column 13 is greater than the thickness of the PCB board 2, when the first positioning hole 21 on the PCB board 2 is sleeved on the positioning column 13, the positioning column 13 is still a certain distance higher than the PCB board 2. When the FPC4 is bent to the back of the PCB board 2, the second positioning hole 41 and two of the positioning columns 13 can be used for positioning and fixing, thereby improving the positioning efficiency of the FPC4, reducing operation time and cost, and improving product competitiveness.

[0038] Furthermore, the height of the positioning post 13 is greater than or equal to the sum of the thicknesses of the PCB board 2 and the FPC 4 , so that after the PCB board 2 is sleeved onto the positioning post 13 , the positioning post 13 still has sufficient height for positioning and fixing the FPC 4 .

[0039] Furthermore, the diameter of the second positioning hole 41 is 0.1 mm larger than the diameter of the positioning post 13 to ensure positioning accuracy.

[0040] Furthermore, there are three positioning columns 13, including two first positioning columns 131 and one second positioning column 132. The two first positioning columns 131 are arranged at the bend near the FPC4 and located at the edge of the lower surface of the base plate 11, and the second positioning column 132 is arranged at the bend away from the FPC4. The three positioning columns 13 are respectively arranged at the vertices near the base plate 11.

[0041] See also Figures 7 to 9As a further optimization scheme of Example 1, in this embodiment, the surface of FPC4 is provided with a traceability label paper 5 and a shielding paper 6, the traceability label paper 5 is pasted on the surface of the FPC4, the shielding paper 6 covers the surface of the FPC4 and the traceability label paper 5, the shielding paper 6 includes a shielding layer 61, a glue layer 62 and a non-adhesive layer 63 which are stacked in sequence from top to bottom, the size and position of the non-adhesive layer 63 correspond to the size and position of the traceability label paper 5, the non-adhesive layer 63 covers the traceability label paper 5, and the glue layer 62 covers the surface of FPC4. Since the bottom layer of the shielding paper 6 is provided with a non-adhesive layer 63, and the non-adhesive layer 63 covers the traceability label paper 5, and the glue layer 62 covers other areas on the surface of FPC4, that is, by adding a non-adhesive non-adhesive layer 63 in the corresponding area of ​​the traceability label paper 5, the viscosity of the shielding paper 6 is isolated from the traceability label paper 5, which can avoid the problem of easy peeling of the traceability code on the traceability label paper 5 caused by the viscosity of the shielding paper 6 during rework, and improve the traceability of product accessories.

[0042] Furthermore, the thickness of the non-adhesive layer 63 is 0.03mm-0.06mm. The edge of the non-adhesive layer 63 exceeds the edge of the traceability label paper 5 by 1.5mm to 3mm to ensure that the non-adhesive layer 63 can still completely cover the traceability label paper 5 in the event of a deviation in the pasting. In addition, the appearance color of the non-adhesive layer 63 and the shielding layer 61 are different, so that the naked eye can easily distinguish whether the non-adhesive layer 63 has a missing pasting problem, ensuring the consistency of the product. More preferably, the color of the non-adhesive layer 63 is white, and the color of the shielding layer 61 is black. The use of white and black can better distinguish the non-adhesive layer 63 from the shielding layer 61.

[0043] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to perform equivalent replacement of some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.

Claims

1. A liquid crystal display screen with improved positioning efficiency, characterized in that: It includes: A backlight adhesive frame, comprising a bottom plate and side walls extending upward from the edge of the bottom plate, wherein at least three positioning posts are arranged on the lower surface of the bottom plate; A PCB board, which is arranged on the lower surface of the bottom plate, and the PCB board is provided with first positioning holes corresponding to the positions and number of positioning posts, and the height of the positioning posts is greater than the thickness of the PCB board; A backlight module, which is arranged on the upper surface of the bottom plate; The TFT module is arranged above the backlight module. The TFT module has an FPC extending outwardly. The FPC is bent to the lower surface of the PCB board. The FPC is provided with second positioning holes corresponding to the positions of the positioning posts. There are two second positioning holes.

2. The liquid crystal display screen with improved positioning efficiency according to claim 1, characterized in that: The diameter of the second positioning hole is 0.1 mm larger than the diameter of the positioning post.

3. The liquid crystal display screen with improved positioning efficiency according to claim 1, characterized in that: There are three positioning posts, including two first positioning posts and one second positioning post. The two first positioning posts are arranged near the bend of the FPC and at the edge of the lower surface of the bottom plate, and the second positioning post is arranged at the bend away from the FPC.

4. The liquid crystal display screen with improved positioning efficiency according to claim 1, characterized in that: A traceability label paper is provided on the surface of the FPC.

5. The liquid crystal display screen with improved positioning efficiency according to claim 4, characterized in that: Shielding paper is arranged on the surface of the FPC, and the shielding paper covers the surface of the FPC and the traceability label paper.

6. The liquid crystal display screen with improved positioning efficiency according to claim 5, characterized in that: The shielding paper includes a shielding layer, a glue layer and a non-adhesive layer stacked in sequence from top to bottom, the size and position of the non-adhesive layer correspond to the size and position of the traceability label paper, the non-adhesive layer covers the traceability label paper, and the glue layer covers the surface of the FPC.

7. The liquid crystal display screen with improved positioning efficiency according to claim 6, characterized in that: The thickness of the non-adhesive layer is 0.03 mm to 0.06 mm.

8. The liquid crystal display screen with improved positioning efficiency according to claim 6, characterized in that: The edge of the non-adhesive layer exceeds the edge of the traceability label paper by 1.5 mm to 3 mm.

9. The liquid crystal display screen with improved positioning efficiency according to claim 6, characterized in that: The non-adhesive layer and the shielding layer have different appearance colors.

10. The liquid crystal display screen with improved positioning efficiency according to claim 9, characterized in that: The color of the non-adhesive layer is white, and the color of the shielding layer is black.

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