Liquid crystal display screen capable of preventing backlight FPC (Flexible Printed Circuit) welding deviation
By setting fixed columns on the side wall of the backlight module of the LCD screen and designing corresponding fixing holes on the backlight FPC, the rapid positioning and fixing of the backlight FPC is achieved, solving the problem of welding bias and improving the competitiveness of the product.
Patent Information
- Application Number
- CN202420738572.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-10
- Publication Date
- 2025-04-22
- Estimated Expiration
- 2034-04-10
AI Technical Summary
Backlit FPCs are prone to bias in the welding process, resulting in poor backlit modules and reducing product competitiveness.
A liquid crystal display screen is designed, in which a fixed column is provided on the side wall of the backlight module and a corresponding fixed hole is provided on the backlight FPC. These structures enable the rapid positioning and fixing of the backlight FPC to avoid welding deviation.
It realizes rapid positioning and fixing of backlit FPC, avoids welding deviation, saves operating time, reduces labor consumption and error repairs, and improves product competitiveness.
Smart Images
Figure CN222784734U_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 capable of preventing backlight FPC welding deviation. Background Art
[0002] In addition to the soft FPC pin-out method, the traditional backlight module also has a hardware PCB pin-out method. In the case of hardware pin-out, the display module is provided with a main screen FPC, which is electrically connected to the backlight FPC. The backlight FPC needs to be folded before it can be welded to the backlight module. The folded backlight FPC is prone to welding deviation due to the folding tension, resulting in a defective backlight module and reducing the competitiveness of the product. Utility Model Content
[0003] The technical problem to be solved by the utility model is how to prevent the backlight FPC from being welded out of position, so as to avoid causing a defective backlight module and improve the competitiveness of the product.
[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 that prevents the backlight FPC from being dislocated during welding, comprising a backlight module and a display module arranged on the backlight module, the display module leading out a main screen FPC, the backlight module comprising a lower frame and an optical component arranged on the lower frame, the lower frame comprising a bottom plate and a side wall extending upward from the edge of the bottom plate, the main screen FPC is electrically connected to the backlight FPC, the side wall is provided with a notch, the backlight FPC is provided with a fixing hole, a fixing column is provided on the notch of the side wall, the backlight FPC is bent and passes through the notch and the fixing hole of the backlight FPC is sleeved and fixed on the fixing column.
[0006] As a preferred implementation of the liquid crystal display screen for preventing backlight FPC welding deviation provided by the utility model, there are two fixing columns.
[0007] As a preferred embodiment of the liquid crystal display screen for preventing backlight FPC welding deviation provided by the utility model, the backlight FPC includes a substrate layer, a circuit layer arranged on the upper surface of the substrate layer, and a metal heat dissipation layer arranged on the lower surface of the substrate layer.
[0008] As a preferred embodiment of the liquid crystal display screen for preventing backlight FPC welding deviation provided by the utility model, the backlight FPC also includes at least one through-hole penetrating the substrate layer, the circuit layer and the metal heat dissipation layer, and the inner wall of the through-hole is provided with a thermal conductive layer in contact with the circuit layer and the metal heat dissipation layer.
[0009] As a preferred implementation of the liquid crystal display screen for preventing backlight FPC welding deviation provided by the utility model, a heat conductor connected to an external heat conductive structure is arranged in the through hole, and the heat conductor is in contact with the heat conductive layer.
[0010] As a preferred implementation of the liquid crystal display screen for preventing backlight FPC welding deviation provided by the utility model, the structure of the metal heat dissipation layer is a mesh structure, a strip structure, a wavy structure or a honeycomb structure.
[0011] As a preferred embodiment of the liquid crystal display screen for preventing the backlight FPC from being welded offset provided by the utility model, a two-dimensional code laser area is provided on the upper surface of the backlight FPC, and a first ink layer and a second ink layer provided on the first ink layer are provided on the upper surface of the backlight FPC located on the two-dimensional code laser area, and a two-dimensional code is formed on the second ink layer by laser, and the colors of the first ink layer and the second ink layer are different.
[0012] As a preferred implementation of the liquid crystal display screen for preventing backlight FPC welding deviation provided by the utility model, the first ink layer is a black ink layer, and the second ink layer is a white ink layer.
[0013] As a preferred embodiment of the liquid crystal display screen for preventing backlight FPC welding deviation provided by the utility model, the thickness of the first ink layer is 30 μm ～ 40μm.
[0014] As a preferred embodiment of the liquid crystal display screen for preventing backlight FPC welding deviation provided by the utility model, the thickness of the second ink layer is 10 μm ～ 20μm.
[0015] The utility model has the following beneficial effects:
[0016] Since a fixing column is provided on the notch of the side wall, and a fixing hole corresponding to the position of the fixing column is opened on the backlight FPC, the fixing hole of the backlight FPC can be fitted and fixed on the fixing column, so that quick positioning can be achieved, and there will be no welding deviation after fixation, which saves operation time, reduces manpower consumption and error repair, avoids defective backlight modules, and improves 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 preventing backlight FPC welding deviation.
[0019] Figure 2 for Figure 1 Enlarged view of point A in the middle.
[0020] Figure 3 for Figure 1 Bottom view of .
[0021] Figure 4 for Figure 3 Schematic diagram of the structure of the backlight FPC.
[0022] Figure 5 This is a schematic diagram of the structure of Example 2.
[0023] Figure 6 This is a schematic diagram of the structure of Example 3.
[0024] Description of Figure Numbers:
[0025] Backlight module 100; display module 200; main screen FPC1; lower frame 2; backlight FPC3; bottom plate 21; side wall 22; notch 23; fixing hole 31; fixing column 24;
[0026] Substrate layer 301; circuit layer 302; metal heat dissipation layer 303; through hole 304;
[0027] A first ink layer 32; a second ink layer 33. DETAILED DESCRIPTION
[0028] 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.
[0029] 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.
[0030] 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.
[0031] The utility model provides a liquid crystal display screen for preventing a backlight FPC from being welded out of position, comprising a backlight module and a display module arranged on the backlight module, wherein a main screen FPC is led out of the display module, the backlight module comprises a lower frame and an optical component arranged on the lower frame, the lower frame comprises a bottom plate and a side wall extending upward from an edge of the bottom plate, the main screen FPC is electrically connected to the backlight FPC, a notch is provided on the side wall, a fixing hole is provided on the backlight FPC, a fixing column is provided on the notch of the side wall, the backlight FPC passes through the notch after being bent, and the fixing hole of the backlight FPC is sleeved and fixed on the fixing column.
[0032] Since a fixing column is provided on the notch of the side wall, and a fixing hole corresponding to the position of the fixing column is opened on the backlight FPC, the fixing hole of the backlight FPC can be fitted and fixed on the fixing column, so that quick positioning can be achieved, and there will be no welding deviation after fixation, which saves operation time, reduces manpower consumption and error repair, avoids defective backlight modules, and improves product competitiveness.
[0033] 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.
[0034] Example 1
[0035] See also Figures 1 to 4 , a liquid crystal display screen for preventing backlight FPC3 welding deviation provided by the utility model, comprises a backlight module 100 and a display module 200, the display module 200 is arranged above the backlight module 100, the display module 200 leads to a main screen FPC1, the backlight module 100 comprises a lower frame 2 and an optical component arranged on the lower frame 2, the lower frame 2 comprises a bottom plate 21 and a side wall 22 extending upward from the edge of the bottom plate 21, the main screen FPC1 is electrically connected to the backlight FPC3, a notch 23 is provided on the side wall 22, a fixing hole 31 is provided on the backlight FPC3, a fixing column 24 is provided on the notch 23 of the side wall 22, the backlight FPC3 is bent and passes through the notch 23 and the fixing hole 31 of the backlight FPC3 is sleeved and fixed on the fixing column 24. Since a fixing column 24 is provided on the notch 23 of the side wall 22, and a fixing hole 31 corresponding to the position of the fixing column 24 is opened on the backlight FPC3, the fixing hole 31 of the backlight FPC3 can be mounted and fixed on the fixing column 24, so that quick positioning can be achieved, and there will be no welding deviation after fixation, which saves operation time, reduces manpower consumption and error repair, avoids the defect of the backlight module 100, and improves the competitiveness of the product.
[0036] Furthermore, there are two fixing posts 24 , so that the backlight FPC 3 can be stably fixed on the fixing posts 24 .
[0037] Example 2
[0038] See also Figure 5 As a further optimization scheme of Example 1, in this embodiment, the backlight FPC3 includes a substrate layer 301, a circuit layer 302 arranged on the upper surface of the substrate layer 301, and a metal heat dissipation layer 303 arranged on the lower surface of the substrate layer 301. The arrangement method can be that the circuit layer 302 and the metal heat dissipation layer 303 are respectively attached to the substrate layer 301 by double-sided adhesive. Since the thickness of the substrate layer 301 is relatively thin, the heat on the backlight FPC3 can be diffused to the metal heat dissipation layer 303 through the substrate layer 301. The metal heat dissipation layer 303 can effectively increase the heat dissipation area of the backlight FPC3 and play a role in uniform heat dissipation, thereby improving the heat dissipation efficiency of the backlight FPC3. The substrate layer 301 can be any one of polyimide, polyester, polysulfone or polytetrafluoroethylene, the double-sided adhesive is any one of an acrylic adhesive layer or an epoxy resin adhesive layer, and the metal heat dissipation layer 303 can be a copper foil layer.
[0039] Furthermore, the backlight FPC 3 further includes at least one through-hole 304 penetrating the substrate layer 301, the circuit layer 302 and the metal heat dissipation layer 303, and the inner wall of the through-hole 304 is provided with a heat-conducting layer in contact with the circuit layer 302 and the metal heat dissipation layer 303. By utilizing the good thermal conductivity at the through-hole 304, the circuit layer 302 and the metal heat dissipation layer 303 on both sides of the substrate layer 301 can be electrically connected to play a good thermal conductivity function, and the thermal conductive layer can provide a thermal conductive function to achieve a good heat dissipation effect. Among them, the thermal conductive layer can be a copper glue conductive ink layer.
[0040] Furthermore, a heat conductor connected to an external heat-conducting structure is disposed in the perforation 304, and the heat conductor is connected to the external heat-conducting structure from one side of the circuit layer 302, and is also in contact with the heat-conducting layer in the perforation 304, so that the circuit layer 302 and the metal heat dissipation layer 303 can be connected to the external heat-conducting structure through the perforation 304, so that the heat in the backlight FPC 3 is diffused to the external heat-conducting structure through the heat conductor in the perforation 304, so as to further improve the heat dissipation efficiency of the backlight FPC 3. Preferably, in order to enable the perforation 304 to be connected to the external heat-conducting structure, the perforation 304 is disposed at the edge of the backlight FPC 3.
[0041] Furthermore, the metal heat dissipation layer 303 is a uniform heat dissipation structure, and its structure can be any one of a mesh structure, a strip structure, a wavy structure or a honeycomb structure. Through the uniform heat dissipation structure, the heat dissipation effect can be better improved.
[0042] Example 3
[0043] See also Figure 6 As a further optimization scheme of Example 1, in this embodiment, a two-dimensional code laser area is further provided on the upper surface of the backlight FPC3. A first ink layer 32 and a second ink layer 33 provided on the first ink layer 32 are provided on the upper surface of the backlight FPC3 located on the two-dimensional code laser area. The second ink layer 33 is formed with a two-dimensional code by laser. The colors of the first ink layer 32 and the second ink layer 33 are different. Since two layers of ink, the first ink layer 32 and the second ink layer 33, are provided, the second ink layer 33 on the surface is lasered off by laser to expose the first ink layer 32 on the bottom layer. The areas where the laser is lasered are displayed in different colors. The two-dimensional code generated in this way has a good contrast effect and is easy to scan. At the same time, the two-dimensional code will not fall off or be damaged, which prevents the two-dimensional code from being invalid, and greatly reduces the labor cost.
[0044] Furthermore, the first ink layer 32 is a black ink layer, and the second ink layer 33 is a white ink layer. The contrast between the black ink layer and the white ink layer is better, and the code is easier to scan.
[0045] Furthermore, the thickness of the first ink layer 32 is 30 μm. ～40 μm. The thickness of the second ink layer 33 is 10 μm ～ 20μm. This thickness is the thickness that the commonly used ultraviolet laser can just penetrate, and there is no dust around after the laser irradiation, which has the advantages of high rhythm and efficiency. The reason why the thickness of the lower first ink layer 32 is thicker than the thickness of the upper second ink layer 33 is to avoid laser power energy fluctuations and prevent the first ink layer 32 from being penetrated by the laser and causing damage to the internal layer of the backlight FPC3.
[0046] 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.
[0047] 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 for preventing backlight FPC welding deviation, characterized in that: It includes a backlight module and a display module arranged on the backlight module, the display module leads to a main screen FPC, the backlight module includes a lower frame and optical components arranged on the lower frame, the lower frame includes a bottom plate and a side wall extending upward from the edge of the bottom plate, the main screen FPC is electrically connected to the backlight FPC, a notch is provided on the side wall, a fixing hole is provided on the backlight FPC, a fixing column is provided on the notch of the side wall, the backlight FPC is bent and passes through the notch and the fixing hole of the backlight FPC is sleeved and fixed on the fixing column.
2. The liquid crystal display screen for preventing backlight FPC welding deviation according to claim 1, characterized in that: There are two fixing columns.
3. The liquid crystal display screen for preventing backlight FPC welding deviation according to claim 1, characterized in that: The backlight FPC includes a substrate layer, a circuit layer arranged on the upper surface of the substrate layer, and a metal heat dissipation layer arranged on the lower surface of the substrate layer.
4. The liquid crystal display screen for preventing backlight FPC welding deviation according to claim 3 is characterized in that: The backlight FPC further includes at least one through-hole penetrating the substrate layer, the circuit layer and the metal heat dissipation layer, and the inner wall of the through-hole is provided with a heat-conducting layer in contact with the circuit layer and the metal heat dissipation layer.
5. The liquid crystal display screen for preventing backlight FPC welding deviation according to claim 4, characterized in that: A heat conductor connected to an external heat-conducting structure is arranged in the through hole, and the heat conductor is in contact with the heat-conducting layer.
6. The liquid crystal display screen for preventing backlight FPC welding deviation according to claim 3, characterized in that: The structure of the metal heat dissipation layer is a mesh structure, a strip structure, a wave structure or a honeycomb structure.
7. The liquid crystal display screen for preventing backlight FPC welding deviation according to claim 1, characterized in that: A QR code laser area is provided on the upper surface of the backlight FPC, a first ink layer and a second ink layer provided on the first ink layer are provided on the upper surface of the backlight FPC located on the QR code laser area, a QR code is formed on the second ink layer by laser, and the colors of the first ink layer and the second ink layer are different.
8. The liquid crystal display screen for preventing backlight FPC welding deviation according to claim 7, characterized in that: The first ink layer is a black ink layer, and the second ink layer is a white ink layer.
9. The liquid crystal display screen for preventing backlight FPC welding deviation according to claim 7, characterized in that: The thickness of the first ink layer is 30 μm ～ 40μm.
10. The liquid crystal display screen for preventing backlight FPC welding deviation according to claim 7, characterized in that: The thickness of the second ink layer is 10 μm ～ 20μm.