Liquid crystal display screen with display screen FPC reliable in grounding
By installing a "concave"-shaped through hole on the bottom plate of the lower iron frame of the LCD screen, and bending and clamping the FPC at the elastic sheet, the problem of poor grounding of the LCD screen FPC is solved, and a better grounding effect is achieved.
Patent Information
- Application Number
- CN202421830186.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-07-31
AI Technical Summary
The FPC grounding effect of existing LCD displays is poor, and is easily affected by the cleanliness and flatness of the lower iron frame, resulting in unstable grounding.
A liquid crystal display screen including a lower iron frame, a backlight module and a display module is designed. The bottom plate of the lower iron frame is equipped with a "concave" font through hole. The FPC is bent to the lower surface of the bottom plate and clamped at the upper plate. The copper leakage area corresponds to the position of the upper plate to achieve conduction and grounding.
Through this design, the FPC can be grounded reliably and stably, avoiding the problem of poor grounding caused by poor cleanliness and flatness of the lower iron frame, and improving the reliability of the grounding effect.
Smart Images
Figure CN222965522U_ABST
Abstract
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 reliable FPC grounding of the display screen. Background Art
[0002] In order to improve the anti-static performance of the liquid crystal display screen, a copper leakage area is usually provided on the back of the FPC of the display screen. The copper leakage area of the FPC is bent to the back of the backlight module, and then the copper leakage area of the FPC is pasted and electrically connected to the lower iron frame through a conductive adhesive, so as to realize the metal grounding of the display screen FPC and the back of the backlight module. Since the conductive adhesive is easily affected by the cleanliness and flatness of the pasting surface, once the pasting surface is not clean enough or the flatness is too high, the grounding effect will be poor. Summary of the Utility Model
[0003] The technical problem to be solved by the utility model is how to improve the reliability of the FPC grounding of the display screen.
[0004] The technical problem to be solved by the utility model is realized through the following technical solutions:
[0005] To solve the above technical problem, the utility model provides a liquid crystal display screen with reliable FPC grounding of the display screen, which includes a lower iron frame, a backlight module, and a display module. The lower iron frame includes a bottom plate and a side wall extending upward from the edge of the bottom plate. An "inverted U" shaped through hole is formed on the bottom plate, and the "inverted U" shaped through hole forms a spring pressing piece. The backlight module is arranged on the bottom plate. The display module is arranged on the backlight module, and an FPC is led out from the display module. The FPC is bent to the lower surface of the bottom plate and clamped at the spring pressing piece. A copper leakage area is arranged on the lower surface of the FPC located on the lower surface of the bottom plate, and the position of the copper leakage area corresponds to the position of the spring pressing piece.
[0006] As a preferred embodiment of the liquid crystal display screen with reliable FPC grounding of the display screen provided by the utility model, there are two spring pressing pieces.
[0007] As a preferred embodiment of the liquid crystal display screen with reliable FPC grounding of the display screen provided by the utility model, a chamfer is arranged at each vertex of the "inverted U" shaped through hole.
[0008] As a preferred embodiment of the liquid crystal display screen with reliable FPC grounding of the display screen provided by the utility model, the chamfer is a rounded chamfer.
[0009] As a preferred embodiment of the liquid crystal display screen with reliable FPC grounding of the display screen provided by the utility model, the width of the copper leakage area is greater than the width of the spring pressing piece.
[0010] As a preferred embodiment of the liquid crystal display screen with reliable display screen FPC grounding provided by the utility model, insulating paper is pasted on the lower surface of the base plate, and the insulating paper completely covers the "concave" shaped through hole and the copper leakage area of the FPC.
[0011] As a preferred implementation of the liquid crystal display screen with reliable display screen FPC grounding provided by the utility model, the elastic pressure piece includes a lead-out section, an arched section, a clamping section and a warped section which are arranged in sequence from the front end to the rear end.
[0012] As a preferred embodiment of the liquid crystal display screen with reliable grounding of the display screen FPC provided by the utility model, the lower surface of the lead-out section is parallel to the lower surface of the base plate, the arched section is arched toward the outside, the lower surface of the clamping section is in contact with the upper surface of the FPC, and the warped section is warped toward the outside.
[0013] As a preferred implementation of the liquid crystal display screen with reliable grounding of the display screen FPC provided by the utility model, the bending arc formed by the warping section is at least 73°.
[0014] As a preferred implementation of the liquid crystal display screen with reliable grounding of the display screen FPC provided by the utility model, the bending arc formed by the warping section is 180°.
[0015] The utility model has the following beneficial effects:
[0016] Since the base plate is provided with a spring-pressed sheet formed by a "concave"-shaped through hole, when the FPC is bent to the lower surface of the base plate, it can be clamped at the spring-pressed sheet, and the spring-pressed sheet and the copper leakage area of the FPC are connected, thereby achieving reliable and stable grounding. It is not affected by the cleanliness and flatness of the lower iron frame, and the grounding effect is better. 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 with reliable display screen FPC grounding.
[0019] Figure 2 for Figure 1 Bottom view of .
[0020] Figure 3 for Figure 2 Schematic diagram of the structure of the midsole plate.
[0021] Figure 4 for Figure 1 Schematic diagram of the improved structure.
[0022] Figure 5 for Figure 1 Schematic diagram of the improved structure of the bullet pressing part.
[0023] Description of Figure Numbers:
[0024] Lower iron frame 1; display module 2; bottom plate 11; side wall 12; "concave" shaped through hole 13; spring pressure sheet 14; FPC 3; copper leakage area 31;
[0025] Insulating paper 4; lead-out section 141; arched section 142; clamping section 143; and raised section 144. DETAILED DESCRIPTION
[0026] 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.
[0027] 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.
[0028] 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.
[0029] The utility model provides a liquid crystal display screen with reliable FPC grounding for a display screen, which includes a lower iron frame, a backlight module, and a display module. The lower iron frame includes a bottom plate and side walls extending upward from the edge of the bottom plate. A "concave"-shaped through hole is formed on the bottom plate, and the "concave"-shaped through hole forms a spring pressing piece. The backlight module is arranged on the bottom plate. The display module is arranged on the backlight module. The display module leads out an FPC outward. The FPC is bent to the lower surface of the bottom plate and clamped at the spring pressing piece. A copper leakage area is arranged on the lower surface of the FPC located on the lower surface of the bottom plate, and the position of the copper leakage area corresponds to the position of the spring pressing piece.
[0030] Due to the spring pressing piece formed by the "concave"-shaped through hole on the bottom plate, when the FPC is bent to the lower surface of the bottom plate, it can be clamped at the spring pressing piece, and the spring pressing piece is conducted with the copper leakage area of the FPC, thereby realizing reliable and stable grounding. It is not affected by the cleanliness and flatness of the lower iron frame, and the grounding effect is better.
[0031] In order to enable those skilled in the art to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the drawings. The present invention will be described in detail below with reference to the drawings and embodiments. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.
[0032] Please refer to Figures 1 to 3 , a liquid crystal display screen with reliable FPC grounding for a display screen provided by the present invention, which includes a lower iron frame 1, a backlight module, and a display module 2. The lower iron frame 1 includes a bottom plate 11 and side walls 12. The side walls 12 are formed by extending upward from the edge of the bottom plate 11. A "concave"-shaped through hole 13 is formed on the bottom plate 11, and the remaining material of the "concave"-shaped through hole 13 forms a spring pressing piece 14. The backlight module is arranged on the bottom plate 11. The display module 2 is arranged on the backlight module. The display module 2 leads out an FPC 3 outward. The FPC 3 is bent downward to the lower surface of the bottom plate 11 and clamped at the spring pressing piece 14. A copper leakage area 31 is arranged on the lower surface of the FPC 3 located on the lower surface of the bottom plate 11, and the position of the copper leakage area 31 corresponds to the position of the spring pressing piece 14. Due to the spring pressing piece 14 formed by the "concave"-shaped through hole 13 on the bottom plate 11, when the FPC 3 is bent to the lower surface of the bottom plate 11, it can be clamped at the spring pressing piece 14, and the spring pressing piece 14 is conducted with the copper leakage area 31 of the FPC 3 and the FPC 3 is fixed, thereby realizing reliable and stable grounding. It is not affected by the cleanliness and flatness of the lower iron frame, and the grounding effect is better. There is no need to use conductive glue for pasting and fixing.
[0033] Furthermore, there are two spring plates 14 to improve the ability of the spring plates 14 to fix the FPC 3 and to increase the contact area to ensure that static electricity can be conducted away by the spring plates 14 .
[0034] Furthermore, each vertex of the “concave”-shaped through hole 13 is provided with a chamfer, and the chamfer is rounded to reduce stress at the vertex and prevent the sharp corners at the vertex from cutting the staff or FPC3.
[0035] Furthermore, the width of the copper leakage area 31 is greater than the width of the spring-pressing sheet 14 , so as to ensure that the spring-pressing sheet 14 can be well clamped to the copper leakage area 31 to achieve the grounding function.
[0036] See also Figure 4 As a further optimization scheme of Example 1, in this embodiment, an insulating paper 4 is pasted on the lower surface of the bottom plate 11, and the insulating paper 4 completely covers the "concave" shaped through hole 13 and the copper leakage area 31 of the FPC3. The insulating paper 4 can prevent this place from being electrically connected to other components, and can also play a role in fixing the FPC3 and the bottom plate 11. It can also block other areas of the "concave" shaped through hole 13 to prevent dust from entering the interior of the liquid crystal display through the "concave" shaped through hole 13.
[0037] See also Figure 5 Furthermore, the spring-pressing sheet 14 includes a lead-out section 141, an arched section 142, a clamping section 143, and a tilted section 144, which are sequentially arranged from the front end to the rear end. The lower surface of the lead-out section 141 is parallel to the lower surface of the bottom plate 11, the arched section 142 is arched toward the outside, the lower surface of the clamping section 143 is in contact with the upper surface of the FPC3, and the tilted section 144 is tilted toward the outside. The arched section 142 can increase the strength of the spring-pressing sheet 14 and increase the downward pressure of the clamping section 143, so that the clamping section 143 can firmly fix the FPC3, and the tilted section 144 can avoid scratching the FPC3.
[0038] Furthermore, the bending arc formed by the tilting section 144 is at least 73°. In other embodiments, the bending arc formed by the tilting section 144 can also be set to 180° to prevent the edge of the tilting section 144 from scratching other components.
[0039] 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.
[0040] Obviously, the embodiments described above are only a part of the embodiments of this application, rather than all the embodiments. The preferred embodiments of this application are given in the accompanying drawings, but they do not limit the patent scope of this application. This application 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 this application more thorough and comprehensive. Although this application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing specific embodiments, or perform equivalent replacements for some of the technical features. Any equivalent structure that makes use of the content of this application's specification and the accompanying drawings, directly or indirectly applied in other related technical fields, is similarly within the scope of patent protection of this application.
Claims
1. A liquid crystal display screen with reliable FPC grounding, characterized in that: It includes: The lower iron frame comprises a bottom plate and a side wall extending upward from the edge of the bottom plate, wherein a concave through hole is provided on the bottom plate, and the concave through hole forms a spring-pressing sheet; A backlight module, which is arranged on the bottom plate; A display module is arranged on the backlight module, and an FPC is led outward from the display module. The FPC is bent to the lower surface of the bottom plate and clamped at the spring-pressing sheet. A copper leakage area is arranged on the lower surface of the FPC located on the lower surface of the bottom plate, and the position of the copper leakage area corresponds to the position of the spring-pressing sheet.
2. The liquid crystal display screen with reliable display screen FPC grounding according to claim 1, characterized in that: There are two elastic sheets.
3. The liquid crystal display screen with reliable display screen FPC grounding according to claim 1, characterized in that: Each vertex of the "concave"-shaped through hole is provided with a chamfer.
4. The liquid crystal display screen with reliable display screen FPC grounding according to claim 3, characterized in that: The chamfer is a rounded corner.
5. The liquid crystal display screen with reliable display screen FPC grounding according to claim 1, characterized in that: The width of the copper leakage area is greater than the width of the elastic pressure sheet.
6. The liquid crystal display screen with reliable display screen FPC grounding according to claim 1, characterized in that: Insulating paper is pasted on the lower surface of the base plate, and the insulating paper completely covers the "concave" shaped through hole and the copper leakage area of the FPC.
7. The liquid crystal display screen with reliable display screen FPC grounding according to claim 1, characterized in that: The elastic pressure piece comprises a lead-out section, an arched section, a clamping section and a tilted section which are sequentially arranged from the front end to the rear end.
8. The liquid crystal display screen with reliable display screen FPC grounding according to claim 7, characterized in that: The lower surface of the lead-out section is parallel to the lower surface of the bottom plate, the arched section arches toward the outside, the lower surface of the clamping section fits the upper surface of the FPC, and the warped section warps toward the outside.
9. The liquid crystal display screen with reliable display screen FPC grounding according to claim 8, characterized in that: The bending arc formed by the warped section is at least 73°.
10. The liquid crystal display screen with reliable display screen FPC grounding according to claim 9, characterized in that: The bending arc formed by the warping section is 180°.