Multicolor LED (light-emitting diode) backlight module
By setting up multi-color splicing LED lights in the backlight module and independently controlling their brightness, the problem of single color of traditional backlight modules is solved, and the choice of multiple colors is realized, which improves the competitiveness and user experience of the product.
Patent Information
- Application Number
- CN202420353491.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-26
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-02-26
AI Technical Summary
The LED lights of traditional backlight modules have a single color, which cannot meet the growing diverse needs of users, resulting in a decline in competitiveness.
Design a multi-color LED light backlight module, by setting light blue and light yellow multi-color splicing LED lights on the light-input side of the light guide plate, and independent control of these LED lights on the FPC, ensuring that users can choose to choose individually. Or light these colors at the same time.
It provides a variety of colors to improve the competitiveness and user experience of the product, and meets users' needs for diverse colors.
Smart Images
Figure CN222189660U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of liquid crystal display, and more specifically to a multi-color LED lamp backlight module. Background Art
[0002] Traditional backlight modules are equipped with LED lights on the light-incoming side. Usually, these LED lights have only one color, usually white LED lights. However, as the mobile phone market becomes increasingly competitive, users have higher requirements for the color of LED lights. Single-color LED lights have gradually lost their competitiveness and cannot meet users' growing quality requirements. Utility Model Content
[0003] The technical problem to be solved by the utility model is how to design a backlight module that can provide multiple colors to improve 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 multi-color LED lamp backlight module, which includes a lower frame, a reflective sheet, a light guide plate and an optical film group which are stacked in sequence from bottom to top, the lower frame includes a bottom plate and a side wall extending upward from the edge of the bottom plate, an FPC is fixed on the side wall, at least one multi-color spliced LED lamp is arranged on the FPC, the multi-color spliced LED lamp is located on the light incident side of the light guide plate, the multi-color spliced LED lamp includes at least a light blue LED lamp and a light yellow LED lamp, and the FPC can separately control the light blue LED lamp and the light yellow LED lamp to light up or off.
[0006] As a preferred embodiment of the multi-color LED lamp backlight module provided by the utility model, the 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.
[0007] As a preferred embodiment of the multi-color LED lamp backlight module provided by the utility model, the 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.
[0008] As a preferred implementation of the multi-color LED lamp backlight module provided by the utility model, 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.
[0009] As a preferred implementation of the multi-color LED lamp backlight module 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.
[0010] As a preferred implementation of the multi-color LED lamp backlight module provided by the utility model, at least one elastic block is provided between the side of the light guide plate away from the light incident side and the side wall.
[0011] As a preferred implementation of the multi-color LED lamp backlight module provided by the utility model, at least one protrusion is provided on both sides of the elastic block.
[0012] As a preferred implementation of the multi-color LED lamp backlight module provided by the utility model, the elastic block is provided with a shock absorbing hole between adjacent protrusions.
[0013] As a preferred implementation of the multi-color LED lamp backlight module provided by the utility model, grooves are provided on the inner wall of the shock absorbing hole close to the side of the protrusion, and shock absorbing devices are provided between adjacent grooves.
[0014] As a preferred implementation of the multi-color LED lamp backlight module provided by the utility model, the shock absorbing device is a spring or two magnets with the same poles facing each other.
[0015] The utility model has the following beneficial effects:
[0016] Since the LED lamp is a multi-color spliced LED lamp, the multi-color spliced LED lamp includes at least a light blue LED lamp and a light yellow LED lamp. The FPC can separately control the light blue LED lamp and the light yellow LED lamp to light up or turn off, so that the user can select the light blue LED lamp or the light yellow LED lamp separately, or light up both the light blue LED lamp and the light yellow LED lamp, giving the user more color choices and improving the competitiveness of the product. 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 schematic structural diagram of a multi-color LED lamp backlight module.
[0019] Figure 2 for Figure 1 Schematic diagram of the improved structure of FPC.
[0020] Figure 3 This is a schematic diagram of the structure of Example 3.
[0021] Figure 4 for Figure 3 Schematic diagram of the structure of the elastic block.
[0022] Description of Figure Numbers:
[0023] Lower frame 1; reflector 2; light guide plate 3; optical film group 4; bottom plate 11; side wall 12; FPC 5; multi-color spliced LED lamp 6;
[0024] Base material layer 51; circuit layer 52; metal heat dissipation layer 53; through hole 54;
[0025] Elastic block 7; convex block 71; shock absorbing hole 72; groove 73; shock absorbing device 74. 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 multi-color LED lamp backlight module, which includes a lower frame, a reflective sheet, a light guide plate and an optical film group which are sequentially stacked from bottom to top, the lower frame includes a bottom plate and a side wall extending upward from the edge of the bottom plate, an FPC is fixed on the side wall, at least one multi-color spliced LED lamp is arranged on the FPC, the multi-color spliced LED lamp is located on the light incident side of the light guide plate, the multi-color spliced LED lamp includes at least a light blue LED lamp and a light yellow LED lamp, and the FPC can separately control the light blue LED lamp and the light yellow LED lamp to light up or go out.
[0030] Since the LED lamp is a multi-color spliced LED lamp, the multi-color spliced LED lamp includes at least a light blue LED lamp and a light yellow LED lamp. The FPC can separately control the light blue LED lamp and the light yellow LED lamp to light up or turn off, so that the user can select the light blue LED lamp or the light yellow LED lamp separately, or light up both the light blue LED lamp and the light yellow LED lamp, giving the user more color choices and improving the competitiveness of the product.
[0031] 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.
[0032] Example 1
[0033] See also Figure 1 , a multi-color LED lamp backlight module provided by the utility model, which includes a lower frame 1, a reflective sheet 2, a light guide plate 3 and an optical film group 4 which are stacked in sequence from bottom to top, the lower frame 1 includes a bottom plate 11 and a side wall 12 extending upward from the edge of the bottom plate 11, an FPC5 is fixed on the side wall 12, and at least one multi-color spliced LED lamp 6 is arranged on the FPC5, the multi-color spliced LED lamp 6 is located on the light incident side of the light guide plate 3, the multi-color spliced LED lamp 6 includes at least a light blue LED lamp and a light yellow LED lamp, and the FPC5 can control the light blue LED lamp and the light yellow LED lamp to light up or go out separately. Since the LED lamp is a multi-color spliced LED lamp 6, the multi-color spliced LED lamp 6 includes at least a light blue LED lamp and a light yellow LED lamp, and the FPC5 can control the light blue LED lamp and the light yellow LED lamp to light up or go out separately, so that the user can select the light blue LED lamp or the light yellow LED lamp separately, or both the light blue LED lamp and the light yellow LED lamp can be lit, giving the user more color choices and improving the competitiveness of the product.
[0034] Example 2
[0035] See also Figure 2 As a further optimization scheme of Example 1, in this embodiment, the FPC5 includes a substrate layer 51, a circuit layer 52 arranged on the upper surface of the substrate layer 51, and a metal heat dissipation layer 53 arranged on the lower surface of the substrate layer 51. The arrangement method can be that the circuit layer 52 and the metal heat dissipation layer 53 are respectively attached to the substrate layer 51 by double-sided adhesive. Since the thickness of the substrate layer 51 is relatively thin, the heat on the FPC5 can be diffused to the metal heat dissipation layer 53 through the substrate layer 51. The metal heat dissipation layer 53 can effectively increase the heat dissipation area of the FPC5 and play a role in uniform heat dissipation, thereby improving the heat dissipation efficiency of the FPC5. The substrate layer 51 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 53 can be a copper foil layer.
[0036] Furthermore, the FPC 5 further includes at least one through-hole 54 penetrating the substrate layer 51, the circuit layer 52 and the metal heat dissipation layer 53, and the inner wall of the through-hole 54 is provided with a heat-conducting layer in contact with the circuit layer 52 and the metal heat dissipation layer 53. By utilizing the good thermal conductivity of the through-hole 54, the circuit layer 52 and the metal heat dissipation layer 53 on both sides of the substrate layer 51 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.
[0037] Furthermore, a heat conductor connected to an external heat-conducting structure is disposed in the through hole 54. The heat conductor is connected to the external heat-conducting structure from one side of the circuit layer 52 and is also in contact with the heat-conducting layer in the through hole 54, so that the circuit layer 52 and the metal heat dissipation layer 53 can be connected to the external heat-conducting structure through the through hole 54, so that the heat in the FPC 5 is diffused to the external heat-conducting structure through the heat conductor in the through hole 54, so as to further improve the heat dissipation efficiency of the FPC 5. Preferably, in order to enable the through hole 54 to be connected to the external heat-conducting structure, the through hole 54 is disposed at the edge of the FPC 5.
[0038] Furthermore, the metal heat dissipation layer 53 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.
[0039] Example 3
[0040] See also Figure 3 and Figure 4As a further optimization scheme of Example 1, in this embodiment, at least one elastic block 7 is provided between the side of the light guide plate 3 away from the light incident side and the side wall 12. The elastic block 7 can make the light guide plate 3 firmly abut against the elastic block 7, buffer the impact force of the light guide plate 3 on the lower frame 1, avoid the collision between the light guide plate 3 and the lower frame 1 and cause noise, and also can improve the service life of the light guide plate 3.
[0041] Furthermore, at least one protrusion 71 is provided on both sides of the elastic block 7 , and the protrusion 71 directly abuts against the light guide plate 3 and the side wall 12 of the lower frame 1 , which can align the elastic block 7 with the light guide plate 3 and the side wall 12 , further improving the buffering performance of the elastic block 7 .
[0042] As the elastic block 7 is used for a longer time, the elasticity of the elastic block 7 will also weaken due to aging. In order to increase the ability of the elastic block 7 to buffer the impact force and increase the service life of the elastic block 7, the elastic block 7 is provided with a shock-absorbing hole 72 between adjacent protrusions 71. In this embodiment, the shock-absorbing hole 72 is a square hole. When the light guide plate 3 hits the elastic block 7, the elastic block 7 will be concave and deformed in the direction of the shock-absorbing hole 72 to absorb the impact force of the light guide plate 3, thereby further achieving the purpose of shock absorption and noise reduction. It should be noted that the shock-absorbing hole 72 can be a through hole or a blind hole, or an inner hole built into the elastic block 7, which is not limited here and falls within the scope of protection of the utility model. The present embodiment uses a through hole, which is easy to manufacture and has a low production cost. The shape of the shock-absorbing hole 72 can be a square hole or a round hole, which can be selected according to actual conditions and is not limited here.
[0043] In order to further increase the ability of the elastic block 7 to buffer the impact force, a groove 73 is provided on the inner wall of the shock-absorbing hole 72 close to the side of the protrusion 71. In this embodiment, there are only two protrusions 71, so there are only two grooves 73. It is possible to set multiple protrusions 71 and multiple grooves 73 according to actual conditions. A shock-absorbing device 74 is provided between adjacent grooves 73. The shock-absorbing device 74 can be used to further increase the ability of the elastic block 7 to buffer the impact force and absorb the impact force of the light guide plate 3, thereby further achieving the purpose of shock absorption and noise reduction.
[0044] Furthermore, the shock absorbing device 74 is any one of a spring or two magnets with the same poles facing each other. The elastic force of the spring or the repulsive force generated by the two magnets with the same poles facing each other is used to further increase the ability of the elastic block 7 to buffer the impact force. The spring and magnet are both standard commodities that can be purchased on the market, and no special customization is required. The procurement cost is low and can be replaced at any time, which is cost-effective.
[0045] 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.
[0046] 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 multi-color LED backlight module, characterized in that: It includes a lower frame, a reflective sheet, a light guide plate and an optical film group which are sequentially stacked from bottom to top. The lower frame includes a bottom plate and a side wall extending upward from the edge of the bottom plate. An FPC is fixed on the side wall. At least one multi-color spliced LED lamp is arranged on the FPC. The multi-color spliced LED lamp is located on the light incident side of the light guide plate. The multi-color spliced LED lamp includes at least a light blue LED lamp and a light yellow LED lamp. The FPC can control the light blue LED lamp and the light yellow LED lamp to light up or turn off respectively. The FPC The FPC comprises 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. The FPC also comprises at least one through-hole penetrating the substrate layer, the circuit layer and the metal heat dissipation layer. 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. A heat conductor connected to an external heat-conducting structure is provided in the through-hole. The heat conductor is in contact with the heat-conducting layer. The structure of the metal heat dissipation layer is a mesh structure, a strip structure, a wavy structure or a honeycomb structure.
2. The multi-color LED lamp backlight module according to claim 1, characterized in that: At least one elastic block is disposed between the side of the light guide plate away from the light incident side and the side wall.
3. The multi-color LED lamp backlight module according to claim 2, characterized in that: At least one protrusion is disposed on both sides of the elastic block.
4. The multi-color LED lamp backlight module according to claim 3, characterized in that: The elastic block is provided with a shock absorbing hole between adjacent protrusions.
5. The multi-color LED lamp backlight module according to claim 4, characterized in that: Grooves are arranged on the inner wall of the shock absorbing hole on one side close to the protrusion, and shock absorbing devices are arranged between adjacent grooves.
6. The multi-color LED lamp backlight module according to claim 5, characterized in that: The shock absorbing device is a spring or two magnets with the same poles facing each other.