Backlight module and display device
By designing a rotatable transparent crimp plate in the backlight module, the problems of inaccurate manual plug-in and poor plug-in in the prior art are solved, and the effect of intuitively judging the plug-in situation and reducing the risk of light shadows is achieved.
Patent Information
- Application Number
- CN202421730027.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-19
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-07-19
AI Technical Summary
In the prior art, personnel need to manually plug in the flexible circuit of the backlight source, and it is impossible to accurately determine whether the circuit is inserted in place, and it is necessary to use the silk screen wire to confirm the plugging situation, which has the problem of poor plugging leading to the risk of light shadow.
A backlight module is designed, including a rotatable transparent crimp plate and a base. When the flexible line is inserted into the plug port, the crimp plate is closed and pressed against the line. The operator can intuitively judge the line plug-in condition through the transparent crimp plate to avoid poor plug-in.
Through the design of transparent crimping plates, operators can intuitively judge the plug-in status of flexible lines, avoid poor plug-in, reduce the risk of lighting, and save the process of silk screen printing lines, reducing process costs.
Smart Images
Figure CN222802143U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of display technology, and in particular to a backlight module and a display device. Background Art
[0002] The connector (CNT) used in the display module of a traditional notebook is an open-close design. When the piano cover of the connector is raised, the flexible circuit of the backlight source can be inserted, and when the piano cover of the connector is closed, the flexible circuit of the backlight source is engaged to achieve a passage.
[0003] The current design of open-and-close connectors has the following shortcomings: First, the actual operation requires manual plugging. When the piano cover is closed, it is impossible to determine whether the flexible circuit is inserted in place; second, in order to confirm the plug-in status, a silk screen line needs to be designed at the corresponding position of the flexible circuit, and personnel need to confirm whether the position of the silk screen line is "pressed one and leaked one"; third, there are tolerances in silk screen printing and connector punching. Even if the "pressed one and leaked one" is met, it is impossible to ensure that the flexible circuit is indeed plugged in, which is easy to cause poor plugging and lead to the risk of light shadow in the product. Utility Model Content
[0004] The purpose of the present application is to provide a backlight module and a display device, which can solve the technical problems in the prior art that manual plugging is required, it is impossible to accurately judge whether the flexible circuit is inserted in place, it is necessary to use the silk screen line to confirm the plug-in status, and the tolerance of silk screen printing and connector punching can easily cause poor plug-in and lead to the risk of light shadow in the product.
[0005] In order to solve the above problems, the present application provides a backlight module, including a connector and a flexible circuit connected to the connector by plugging; the connector includes: a base, which has a plug-in port, and the flexible circuit is plugged into the plug-in port; a crimping plate, which is rotatably fixed on the base; when the crimping plate is opened, the flexible circuit is inserted into the plug-in port, and when the crimping plate is closed, the crimping plate is pressed against the flexible circuit; wherein the material of the crimping plate is a transparent material.
[0006] In some embodiments, the light transmittance of the pressed plate is greater than or equal to 80%.
[0007] In some embodiments, the material of the compression plate includes one of polymethyl methacrylate, polystyrene, polycarbonate, and styrene acrylonitrile.
[0008] In some embodiments, the connector also includes a plurality of conductive connectors fixedly connected to the base, and the plurality of conductive connectors are arranged at intervals along a first direction; when the flexible circuit is inserted into the plug port, the surface of the flexible circuit on the side away from the crimping plate has a plurality of conductive terminals, and one conductive terminal corresponds to one conductive connector and is electrically connected.
[0009] In some embodiments, each conductive member has a first conductive end and a second conductive end in a second direction intersecting the first direction. The first conductive end is located in the plug port to be electrically connected to the flexible circuit, and the second conductive end is located outside the plug port.
[0010] In some embodiments, before the flexible circuit is inserted into the plug port, the minimum spacing between the crimping plate and the first conductive end when it is opened is a first spacing, and the minimum spacing between the crimping plate and the first conductive end when it is closed is a second spacing, and the second spacing is smaller than the first spacing.
[0011] In some embodiments, when the flexible circuit is inserted into the plug port, the minimum spacing between the crimping plate and the first conductive end when the crimping plate is closed is a third spacing, and the third spacing is greater than or equal to the second spacing.
[0012] In some embodiments, the flexible circuit includes one of a flexible flat cable and a flexible circuit board.
[0013] In some embodiments, the backlight module further includes a light emitting element electrically connected to the flexible circuit; and a printed circuit board, on which the connector is disposed; wherein one end of the connector is electrically connected to the flexible circuit, and the other end is electrically connected to the printed circuit board.
[0014] In order to solve the above problems, the present application also provides a display device, which includes the backlight module of the present application.
[0015] The advantages of the present application are: the backlight module of the present application includes a connector and a flexible circuit connected to the connector by plugging. The connector includes a base and a crimping plate rotatably fixed on the base. When the crimping plate is opened, the flexible circuit is inserted into the plug-in port. When the crimping plate is closed, the crimping plate presses against the flexible circuit. The material of the crimping plate is a transparent material. Therefore, when the crimping plate is closed, the operator can intuitively judge the plug-in status of the flexible circuit under it through the crimping plate, effectively intercepting the backlight module with poor plug-in of the flexible circuit, avoiding the risk of light shadow in the display device caused by poor plug-in of the flexible circuit and the connector, and can also save the process of preparing silk screen lines on the flexible circuit to confirm the plug-in status of the flexible circuit in the prior art, thereby reducing the process cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.
[0017] Figure 1 is a top view of the connector of the present application opened and inserted into a flexible circuit;
[0018] Figure 2 is a top view of the connector of the present application closed and inserted into a flexible circuit;
[0019] Figure 3 is a schematic diagram of the structure of the connector of the present application being opened and without the flexible circuit inserted;
[0020] Figure 4 is a cross-sectional schematic diagram of the connector of the present application being opened and without a flexible circuit inserted;
[0021] Figure 5 It is a cross-sectional schematic diagram of the connector of the present application being closed and not having a flexible circuit inserted therein.
[0022] Description of reference numerals:
[0023] 100. Backlight module;
[0024] 1. Connector; 2. Flexible circuit;
[0025] 11. base; 12. crimping plate; 13. guide member; 14. rotating shaft;
[0026] 111, plug-in port; 131, first conductive terminal; 132, second conductive terminal. DETAILED DESCRIPTION
[0027] The preferred embodiments of the present application are described in detail below in conjunction with the drawings in the specification, so as to fully introduce the technical content of the present application to those skilled in the art, to illustrate that the present application can be implemented, to make the technical content disclosed in the present application clearer, and to make it easier for those skilled in the art to understand how to implement the present application. However, the present application can be embodied through many different forms of embodiments, and the protection scope of the present application is not limited to the embodiments mentioned in the text, and the description of the embodiments below is not intended to limit the scope of the present application.
[0028] The directional terms mentioned in this application, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "side", etc., are only directions in the drawings. The directional terms used in this article are used to explain and illustrate this application, and are not used to limit the scope of protection of this application.
[0029] In the drawings, components with the same structure are represented by the same numerical labels, and components with similar structures or functions are represented by similar numerical labels. In addition, for the convenience of understanding and description, the size and thickness of each component shown in the drawings are arbitrarily shown, and the present application does not limit the size and thickness of each component.
[0030] See also Figure 1 and Figure 2 , Figure 1is a top view of the connector of the present application opened and inserted into a flexible circuit; Figure 2 1 is a top view of the connector of the present application being closed and inserted into a flexible circuit. The present application provides a backlight module 100. The backlight module 100 includes a connector 1, a flexible circuit 2, a light-emitting element (not shown) and a printed circuit board (not shown). In some embodiments, the backlight module 100 also includes structures such as an optical film, a reflective sheet, and a light guide plate.
[0031] See also Figure 3 , Figure 3 1 is a schematic diagram of the structure of the connector of the present application when it is opened and the flexible circuit is not inserted. The connector 1 includes: a base 11, a crimping plate 12 and a plurality of conductive parts 13. The connector 1 includes a first direction M, a second direction N and a third direction P that intersect each other. In this embodiment, the first direction M, the second direction N and the third direction P are perpendicular to each other.
[0032] The base 11 has a plug port 111 . The plug port 111 is used to plug a flexible circuit 2 .
[0033] The pressing plate 12 is rotatably fixed on the base 11. In this embodiment, the pressing plate 12 is rotatably fixed on the base 11 via a rotating shaft 14. Specifically, the rotating shaft 14 is rotatably fixed on two opposite side walls of the base 11.
[0034] See also Figure 1 and Figure 2 When the crimping plate 12 is opened, the flexible circuit 2 is inserted into the plug port 111 , and when the crimping plate 12 is closed, the crimping plate 12 is pressed against the flexible circuit 2 .
[0035] The material of the crimping plate 12 is a transparent material. Therefore, when the crimping plate 12 is closed, the operator can intuitively judge the plugging condition of the flexible circuit 2 thereunder through the crimping plate 12, effectively intercepting the backlight module 100 with poor plugging of the flexible circuit 2, avoiding the risk of light shadow on the display device caused by poor plugging of the flexible circuit 2 and the connector 1, and also eliminating the process of preparing a silk screen line on the flexible circuit 2 to confirm the plugging condition of the flexible circuit 2 in the prior art, thereby reducing the process cost.
[0036] In some embodiments, the light transmittance of the crimping plate 12 is greater than or equal to 80%. In this embodiment, the light transmittance of the crimping plate 12 is 95%. In other embodiments, the light transmittance of the crimping plate 12 can be any one of 82%, 85%, 86%, 88%, 90%, 92%, 94%, 96%, 98%, 100%, or a range between any two values.
[0037] In some embodiments, the material of the crimping plate 12 includes one of polymethyl methacrylate (PMMA), polystyrene (PS), polycarbonate (PC) and styrene acrylonitrile (AS). In this embodiment, the material of the crimping plate 12 is PMMA.
[0038] See also Figure 4 and Figure 5 , a plurality of conductive members 13 are fixedly connected to the base 11. The plurality of conductive members 13 are arranged at intervals along the first direction M. In some embodiments, each conductive member 13 has a first conductive end 131 and a second conductive end 132 in the second direction N, the first conductive end 131 is located inside the plug port 111 to be electrically connected to the flexible circuit 2, and the second conductive end 132 is located outside the plug port 111.
[0039] See also Figure 4 Before the flexible circuit 2 is inserted into the plug port 111 , the minimum distance between the crimping plate 12 and the first conductive end 131 when the crimping plate 12 is opened is the first distance L1 .
[0040] See also Figure 5 , the minimum distance between the crimping plate 12 and the first conductive end 131 when it is closed is the second distance L2, and the second distance L2 is smaller than the first distance L1. Since the second distance L2 is smaller than the first distance L1, when the crimping plate 12 is opened, the flexible circuit 2 can be inserted into the plug port 111, and then when the crimping plate 12 is closed, the crimping plate 12 and the first conductive end 131 together clamp the flexible circuit 2 to fix the flexible circuit 2.
[0041] In some embodiments, when the flexible circuit 2 is inserted into the plug port 111, the surface of the flexible circuit 2 away from the crimping plate 12 has a plurality of conductive terminals (not shown), and one conductive terminal corresponds to and is electrically connected to one conductive member 13. Specifically, each conductive terminal is electrically connected to a first conductive end 131 of a conductive member 13. When the crimping plate 12 is closed, the flexible circuit 2 is not only fixed between the crimping plate 12 and the first conductive end 131, but also electrically connected to the first conductive end 131 through the conductive terminals on the flexible circuit 2.
[0042] In some embodiments, when the flexible circuit 2 is inserted into the plug port 111, the minimum spacing between the crimping plate 12 and the first conductive end 131 when closed is a third spacing, and the third spacing is greater than or equal to the second spacing L2. When the third spacing is equal to the second spacing L2, the thickness of the portion of the flexible circuit 2 inserted into the plug port 111 is equal to the second spacing L2. When the third spacing is greater than the second spacing L2, the thickness of the portion of the flexible circuit 2 inserted into the plug-in port 111 is greater than the second spacing L2. At this time, the side of the first conductive end 131 away from the second conductive end 132 is elastically deformed in the third direction P. Specifically, the side of the first conductive end 131 away from the second conductive end 132 moves away from the crimping plate 12, which can not only fully fix the flexible circuit 2 between the crimping plate 12 and the first conductive end 131, but also avoid that when the crimping plate 12 is closed, the spacing between the crimping plate 12 and the first conductive end 131 is too small, which over-extrudes the flexible circuit 2 and avoids affecting the plug-in condition of the flexible circuit 2. Therefore, the elastic deformation of the first conductive end 131 of the conductive member 13 can make the connector 1 suitable for electrically connecting flexible circuits 2 of different thicknesses, thereby improving the application range of the connector 1.
[0043] See also Figure 1 and Figure 2 , the flexible circuit 2 is connected to the connector 1 by plugging. Specifically, the flexible circuit 2 is plugged into the plug port 111 of the connector 1. In some embodiments, the flexible circuit 2 includes one of a flexible flat cable (Flexible Flat Cable, FFC for short) and a flexible printed circuit board (Flexible Printed Circuit Board, FPC for short). In this embodiment, the flexible circuit 2 is a flexible circuit board.
[0044] In some embodiments, a light-emitting element (not shown) is electrically connected to the flexible circuit 2. Specifically, the backlight module 100 includes a plurality of light-emitting elements, which are arranged on the flexible circuit 2 at intervals. In this embodiment, the light-emitting element is a light-emitting diode (LED), and in other embodiments, other types of light-emitting elements may also be used.
[0045] In some embodiments, the connector 1 is disposed on a printed circuit board (PCB) (not shown). Specifically, the base 11 of the connector 1 is fixedly connected to the printed circuit board.
[0046] In some embodiments, one end of the connector 1 is electrically connected to the flexible circuit 2, and the other end is electrically connected to the printed circuit board. Specifically, the first conductive end 131 of the conductive member 13 of the connector 1 is electrically connected to the flexible circuit 2, and the second conductive end 132 of the conductive member 13 of the connector 1 is electrically connected to the printed circuit board.
[0047] In some embodiments, the present application further provides a display device, which includes the above-mentioned backlight module 100. In some embodiments, the display device is a liquid crystal display device.
[0048] The above is a detailed introduction to a backlight module and a display device provided by the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the core idea of the present application. At the same time, for technicians in this field, according to the idea of the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.
Claims
1. A backlight module (100), characterized in that: include: A connector (1), and a flexible circuit (2) connected to the connector (1) by plugging; The connector (1) comprises: A base (11) having a plug-in port (111), wherein the flexible circuit (2) is plugged into the plug-in port (111); A crimping plate (12) rotatably fixed on the base (11); When the crimping plate (12) is opened, the flexible circuit (2) is inserted into the plug port (111); when the crimping plate (12) is closed, the crimping plate (12) is pressed against the flexible circuit (2); Wherein, the material of the crimping plate (12) is a transparent material.
2. The backlight module (100) according to claim 1, characterized in that: The light transmittance of the compression plate (12) is greater than or equal to 80%.
3. The backlight module (100) according to claim 1, characterized in that: The material of the crimping plate (12) includes one of polymethyl methacrylate, polystyrene, polycarbonate and styrene acrylonitrile.
4. The backlight module (100) according to claim 1, characterized in that: The connector (1) further comprises a plurality of conductive members (13) fixedly connected to the base (11), wherein the plurality of conductive members (13) are arranged at intervals along a first direction (M); When the flexible circuit (2) is inserted into the plug port (111), the surface of the flexible circuit (2) away from the crimping plate (12) has a plurality of conductive terminals, and one of the conductive terminals corresponds to and is electrically connected to one of the conductive members (13).
5. The backlight module (100) according to claim 4, characterized in that: Each of the conductive members (13) has a first conductive end (131) and a second conductive end (132) in a second direction (N) intersecting the first direction (M), wherein the first conductive end (131) is located inside the plug port (111) to be electrically connected to the flexible circuit (2), and the second conductive end (132) is located outside the plug port (111).
6. The backlight module (100) according to claim 5, characterized in that: Before the flexible circuit (2) is inserted into the plug port (111), the minimum distance between the crimping plate (12) and the first conductive end (131) when the crimping plate (12) is open is a first distance (L1), and the minimum distance between the crimping plate (12) and the first conductive end (131) when the crimping plate (12) is closed is a second distance (L2), and the second distance (L2) is smaller than the first distance (L1).
7. The backlight module (100) according to claim 6, characterized in that: When the flexible circuit (2) is inserted into the plug port (111), the minimum distance between the crimping plate (12) and the first conductive end (131) when closed is a third distance, and the third distance is greater than or equal to the second distance (L2).
8. The backlight module (100) according to claim 1, characterized in that: The flexible circuit (2) comprises one of a flexible flat cable and a flexible circuit board.
9. The backlight module (100) according to claim 1, characterized in that: Also includes: A light emitting element electrically connected to the flexible circuit (2); as well as A printed circuit board, the connector (1) being arranged on the printed circuit board; Wherein, one end of the connector (1) is electrically connected to the flexible circuit (2), and the other end is electrically connected to the printed circuit board.
10. A display device, characterized in that: A backlight module (100) comprising any one of claims 1 to 9.