Backlight module and display module

Abstract

The utility model discloses an embodiment of backlight module and display module, this backlight module includes backboard, light guide plate, lamp plate and electronic component, and backboard includes bottom plate and side plate, and bottom plate and side plate form accommodating space, light guide plate is located bottom plate one side in accommodating space, and lamp plate is located light guide plate far from bottom plate one side, and lamp plate is fixedly connected with light guide plate, and lamp plate is provided with luminous element to light guide plate one side, and electronic component sets up on lamp plate, the technical scheme provided by the utility model embodiment, through with the integral design of lamp strip and circuit board as lamp plate, thereby save the connector for connecting lamp strip and circuit board, and through with lamp plate and light guide plate assembly together, and make lamp plate flip chip in light guide plate's light -admitting side, make backboard not use again make for the lug of bearing circuit board, and lamp plate also need not use screw lock on the lug of backboard, be favorable to simplifying backplate, save assembly work hours.

Description

Technical Field

[0001] This utility model relates to the field of display technology, and in particular to a backlight module and a display module. Background Technology

[0002] With the rapid development of display technology, liquid crystal displays (LCDs) have become widely used in various information, communication, and consumer products due to their advantages such as small size, high image quality, no radiation, and low driving voltage. Since the liquid crystal panel itself does not emit light, a backlight module is needed on the back of the LCD panel as a backlight source to display images properly.

[0003] In existing backlight modules, the main board and the lamp board are two independent parts connected by a connector, which can easily lead to compatibility issues and waste materials. In addition, the lamp board is assembled inside the lamp cover formed by bending the back plate, making it difficult to assemble and disassemble the lamp board. Utility Model Content

[0004] This utility model provides a backlight module and a display module to simplify the backlight module.

[0005] According to one aspect of the present invention, a backlight module is provided, comprising:

[0006] A back panel, the back panel including a bottom panel and a side panel, the bottom panel and the side panel forming an accommodating space;

[0007] A light guide plate, wherein the light guide plate is located on one side of the base plate within the accommodating space;

[0008] A light panel is located on the side of the light guide plate away from the base plate. The light panel is fixedly connected to the light guide plate, and a light-emitting element is provided on the side of the light panel facing the light guide plate.

[0009] Electronic components, wherein the electronic components are disposed on the lamp board;

[0010] The light panel includes a first region and a second region, the light-emitting element is located in the first region, and the electronic components are located at least in the second region;

[0011] The first region is located on the side of the side plate closer to the light guide plate, and the second region is located on the side of the side plate away from the light guide plate.

[0012] Optionally, at least some of the electronic components are located between two adjacent light-emitting elements in the first region;

[0013] And / or, at least some of the electronic components are located on the surface of the lamp panel on the side away from the light guide plate.

[0014] Optionally, the lamp panel is located on the light-incident side near the light guide plate, and the lamp panel is bonded to the light guide plate and the side plate by an adhesive.

[0015] Optionally, the system further includes a flexible circuit board connected to the lamp board, the electronic components being disposed on the flexible circuit board, and the flexible circuit board being located between the lamp board and the electronic components.

[0016] Optionally, it also includes a reflective sheet located within the receiving space and between the base plate and the light guide plate;

[0017] Specifically, on the light-incident side of the light guide plate, the vertical projection of the edge of the light guide plate onto the base plate falls within the vertical projection of the reflective sheet onto the base plate.

[0018] Optionally, it also includes an optical film located on the side of the light guide plate away from the base plate.

[0019] Optionally, the lamp panel includes an aluminum substrate.

[0020] According to another aspect of the present invention, a display module is provided, which includes the backlight module provided in any embodiment of the present invention.

[0021] Optionally, the display module further includes a display panel, which is bonded to the side of the lamp panel away from the base plate by tape.

[0022] According to another aspect of the present invention, an electronic device is provided, the electronic device comprising:

[0023] The technical solution provided by this utility model integrates electronic components and light-emitting elements on the lamp board, which enables the integrated design of the lamp strip and circuit board in the prior art, thereby saving the connectors used to connect the lamp strip and the circuit board. In addition, by setting the lamp board on the side of the light guide plate away from the base plate, and assembling the lamp board and the light guide plate together, and making the lamp board upside down on the light-incident side of the light guide plate, the back plate no longer needs to be made with lugs for supporting the circuit board, and the lamp board does not need to be screwed to the lugs of the back plate, which helps to simplify the back plate and save assembly time.

[0024] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this utility model, nor is it intended to limit the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A cross-sectional structural diagram of a backlight module provided in an embodiment of this utility model;

[0027] Figure 2 This is a schematic diagram of the structure of a lamp panel provided in an embodiment of the present utility model;

[0028] Figure 3 This is a cross-sectional structural diagram of another backlight module provided in an embodiment of the present utility model;

[0029] Figure 4 This is a cross-sectional structural diagram of another backlight module provided in an embodiment of the present utility model;

[0030] Figure 5 This is a cross-sectional structural diagram of another backlight module provided in an embodiment of the present utility model;

[0031] Figure 6 This is a schematic diagram of the structure of a display module provided in an embodiment of the present utility model.

[0032] Among them, 100-display panel; 10-back panel; 101-bottom plate; 102-side plate; 20-light guide plate; 30-lamp plate; 31-light-emitting element; 32-electronic component; 40-colloid; 50-flexible circuit board; 60-reflective sheet; 70-optical film; 80-adhesive tape; 90-frame adhesive. Detailed Implementation

[0033] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0034] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0035] Figure 1 This is a cross-sectional structural diagram of a backlight module provided in an embodiment of the present invention, with reference to... Figure 1 The backlight module provided in this embodiment includes:

[0036] The back panel 10 includes a bottom plate 101 and a side plate 102, which form an accommodating space.

[0037] Light guide plate 20, located on one side of the base plate 101 within the accommodating space 31;

[0038] The light board 30 is located on the side of the light guide plate 20 away from the base plate 101. The light board 30 is fixedly connected to the light guide plate 20. A light-emitting element 31 is provided on the side of the light board 30 facing the light guide plate 20.

[0039] Electronic component 32 is disposed on lamp board 30.

[0040] Specifically, the base plate 101 extends along a first direction, and the side plates 102 extend along a second direction, with the first direction perpendicular to the second direction. For example, the first direction can be a horizontal direction, and the second direction can be the thickness direction (vertical direction) of the backlight module. The base plate 101 and the multiple side plates 102 together form a receiving space, in which the light guide plate 20 and the light-emitting element 31 are both disposed.

[0041] In this embodiment, the lamp board 30 is located on the side of the light guide plate 20 away from the base plate 101, and the lamp board 30 is fixedly connected to the light guide plate 20, such as by using an adhesive. The light-emitting element 31 is located on the surface of the lamp board 30 facing the light guide plate 20, that is, the lamp board 30 is flip-mounted on the light guide plate 20. The lamp board 30 is also provided with a plurality of electronic components 32, which can be resistors, capacitors, control chips or driver chips, etc.

[0042] The technical solution provided by this utility model embodiment integrates both the electronic component 32 and the light-emitting element 31 on the lamp board 30, which enables the integrated design of the lamp strip and the circuit board in the prior art, thereby saving the connectors used to connect the lamp strip and the circuit board. In addition, by setting the lamp board 30 on the side of the light guide plate 20 away from the base plate 101, and assembling the lamp board 30 and the light guide plate 20 together, and making the lamp board 30 flip-mounted on the light-incident side of the light guide plate 20, the back plate 10 no longer needs to make lugs for supporting the circuit board, and the lamp board 30 does not need to be screwed to the lugs of the back plate 10, which helps to simplify the back plate 10 and save assembly time.

[0043] Figure 2 This is a schematic diagram of the structure of a lamp panel provided in an embodiment of the present utility model, with reference to... Figure 1 and Figure 2 Based on the above embodiments, optionally, the lamp panel 30 includes a first region 301 and a second region 302, the light-emitting element 31 is located in the first region 301, and the electronic component 32 is located at least in the second region 302; the first region 301 is located on the side of the side plate 102 close to the light guide plate 20, and the second region 302 is located on the side of the side plate 102 away from the light guide plate 20.

[0044] Specifically, the first area 301 is a light strip area, used to place the light-emitting element 31. Here, the first area 301 is elongated and positioned near the light-incident side of the light guide plate 20. The second area 302 is a mainboard area, used to place electronic components 32.

[0045] In this embodiment, electronic components 32 can be disposed only in the second region 302, or simultaneously in both the first region 301 and the second region 302. That is, some electronic components are located in the first region 301, and some are located in the second region 302. For example, smaller devices such as the driver of the light-emitting element 31 can be disposed between two adjacent light-emitting elements 31 to reduce the width of the lamp panel 30. In addition, at least some electronic components 32 can be disposed on the surface of the lamp panel 30 away from the light guide plate 20, that is, on the side of the lamp panel 30 where the light-emitting element 31 is not disposed, to further reduce the width of the lamp panel 30, thereby reducing the width of the backlight module.

[0046] Optionally, the light-emitting element 31 can be an LED or an M-LED.

[0047] Figure 3 This is a cross-sectional structural diagram of another backlight module provided in an embodiment of the present invention, with reference to... Figure 3 Based on the above embodiments, optionally, the lamp plate 30 is located on the light-incident side near the light guide plate 20, and the lamp plate 30 is bonded to the light guide plate 20 and the side plate 102 by the adhesive 40.

[0048] Specifically, in the manufacturing process of the backlight module, the lamp board 30 and the light guide plate 20 are first assembled together. Then, the lamp board 30 is flipped onto the side plate 102 of the back plate 10 using the adhesive 40. The light guide plate 20 and the side plate 102 provide support for the lamp board 30, thus eliminating the need to provide lugs on the side of the side plate 102 away from the light guide plate 20. This simplifies the structure of the back plate 10 and the production and assembly steps of the backlight module. Furthermore, the technical solution provided in this embodiment can fix the lamp board 30 using the adhesive 40, which helps to reduce the number of screws used and the number of internal parts of the backlight module, thereby improving the assembly efficiency of the backlight module.

[0049] Figure 4 This is a cross-sectional structural diagram of another backlight module provided in an embodiment of the present invention, with reference to... Figure 4 Based on the above embodiments, the backlight module provided in this embodiment also includes a flexible circuit board 50, which is connected to the lamp board 30. Electronic components 32 are disposed on the flexible circuit board 50, and the flexible circuit board 50 is located between the lamp board 30 and the electronic components 32.

[0050] Specifically, the flexible circuit board 50 and the lamp board 30 are bonded together to form a robust composite board through processes such as pre-pressing and lamination. The flexible circuit board 50 can be positioned in the second region 302 of the lamp board 30. By adopting a combination of rigid and flexible boards, the problems of space layout, heat dissipation, and electrical performance encountered when routing multiple layers in the backlight module can be solved, thereby improving the performance and reliability of the backlight module and reducing production costs and increasing production efficiency to a certain extent.

[0051] Figure 5 This is a cross-sectional structural diagram of another backlight module provided in an embodiment of the present invention, with reference to... Figure 5 Based on the above embodiments, the backlight module provided in this embodiment further includes a reflective sheet 60, which is located within the accommodating space and between the base plate 101 and the light guide plate 20. Here, since the lamp plate 30 is flip-mounted on the light guide plate 30, compared to the upright mounting solution, the technical solution provided in this embodiment does not require setting another reflective sheet on the side of the light guide plate away from the base plate 101. The requirements can be met by the reflective sheet 60 between the base plate 101 and the light guide plate 20, which helps to reduce the thickness of the backlight module and achieve a thinner and lighter backlight module.

[0052] In this embodiment, on the light-incident side of the light guide plate 20, the vertical projection of the edge of the light guide plate 20 onto the base plate 101 falls within the vertical projection of the reflector 60 onto the base plate 101. The light guide plate 20 can be used to reflect light that is not effectively utilized on its sides back into the interior of the light guide plate 20, preventing light from directly hitting the base plate 101 and causing light loss, enhancing the constraint of edge light, and improving light utilization.

[0053] Optionally, the reflector 60 may use a high reflectivity material, and the reflective characteristics may be adjusted according to the type of light source and optical requirements.

[0054] Continue to refer to Figure 5 Optionally, the backlight module provided in this embodiment further includes an optical film 70, which is located on the side of the light guide plate 20 away from the base plate 101. The optical film 70 can be used to perform secondary optical control on the light emitted from the light guide plate 20 to optimize the brightness, uniformity, directionality, and diffusion effect of the light. In this embodiment, the optical film 70 includes, but is not limited to, a diffusion film, a prism film, a polarizer or retardation film, a quantum dot film, etc.

[0055] Optionally, in this embodiment, the lamp board 30 includes an aluminum substrate. The aluminum substrate typically includes a circuit layer, an insulating layer, and a metal base layer. The circuit layer is used to realize the electrical connection of the light-emitting elements 31, connecting each light-emitting element 31 in series or parallel through copper foil lines to form a complete circuit loop, enabling the light-emitting elements 31 to emit light normally after being powered on. The insulating layer separates the circuit layer from the metal base layer to prevent short circuits and also provides a certain degree of heat insulation. The metal base layer is generally made of aluminum. Utilizing the high thermal conductivity of aluminum, the heat generated by the light-emitting elements 31 during operation is quickly conducted away, effectively reducing the temperature of the light-emitting elements 31, which helps to extend the service life of the light-emitting elements 31 and maintain their stable luminous performance.

[0056] Optionally, this embodiment of the present invention also provides a display module, which includes the backlight module provided in any embodiment of the present invention. Therefore, the display module provided in this embodiment also has the beneficial effects described in any of the above embodiments.

[0057] Figure 6 This is a schematic diagram of the structure of a display module provided in an embodiment of the present utility model, with reference to... Figure 6 The display module also includes a display panel 100, which is bonded to the side of the lamp board 30 away from the base plate 101 by adhesive tape 80. The display panel 100 may include an array substrate, a color filter substrate, and a liquid crystal layer disposed between the array substrate and the color filter substrate. A lower polarizer is disposed at the bottom of the array substrate, and an upper polarizer is disposed at the top of the color filter substrate. A frame adhesive 90 is also disposed around the display module to prevent light leakage from the backlight module. The specific structure and working principle of the display panel 100 can be found in descriptions in related technologies and will not be repeated here.

[0058] The technical solution provided by this utility model embodiment integrates both the electronic component 32 and the light-emitting element 31 on the lamp board 30, which enables the integrated design of the lamp strip and the circuit board in the prior art, thereby saving the connectors used to connect the lamp strip and the circuit board and reducing the number of parts in the display module. In addition, by setting the lamp board 30 on the side of the light guide plate 20 away from the base plate 101, and assembling the lamp board 30 and the light guide plate 20 together, the back plate 10 no longer needs to make lugs for supporting the circuit board, and the lamp board 30 does not need to be screwed to the lugs of the back plate 10, which helps to simplify the back plate 10 and save assembly time. Furthermore, by flipping the lamp board 30 on the light-incident side of the light guide plate 20, there is no need to set a reflective sheet for reflecting the light emitted from the top of the backlight module, which helps to reduce the thickness of the backlight module and thus reduce the overall thickness of the display module.

[0059] It should be understood that the various forms of the process shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this utility model can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this utility model can be achieved, and this is not limited herein.

[0060] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A backlight module, characterized in that, include: A back panel, the back panel including a bottom panel and a side panel, the bottom panel and the side panel forming an accommodating space; A light guide plate, wherein the light guide plate is located on one side of the base plate within the accommodating space; A light panel is located on the side of the light guide plate away from the base plate. The light panel is fixedly connected to the light guide plate, and a light-emitting element is provided on the side of the light panel facing the light guide plate. Electronic components, wherein the electronic components are disposed on the lamp board; The light panel includes a first region and a second region, the light-emitting element is located in the first region, and the electronic components are located at least in the second region; The first region is located on the side of the side plate closer to the light guide plate, and the second region is located on the side of the side plate away from the light guide plate.

2. The backlight module according to claim 1, characterized in that, At least some of the electronic components are located between two adjacent light-emitting elements in the first region; And / or, at least some of the electronic components are located on the surface of the lamp panel on the side away from the light guide plate.

3. The backlight module according to claim 1, characterized in that, The lamp panel is located on the light-incident side near the light guide plate, and the lamp panel is bonded to the light guide plate and the side plate by an adhesive.

4. The backlight module according to claim 1, characterized in that, It also includes a flexible circuit board, which is connected to the lamp board. The electronic components are disposed on the flexible circuit board, and the flexible circuit board is located between the lamp board and the electronic components.

5. The backlight module according to claim 1, characterized in that, It also includes a reflective sheet located within the receiving space and between the base plate and the light guide plate; Specifically, on the light-incident side of the light guide plate, the vertical projection of the edge of the light guide plate onto the base plate falls within the vertical projection of the reflective sheet onto the base plate.

6. The backlight module according to claim 1, characterized in that, It also includes an optical film located on the side of the light guide plate away from the base plate.

7. The backlight module according to claim 1, characterized in that, The lamp panel includes an aluminum substrate.

8. A display module, characterized in that, Includes the backlight module as described in any one of claims 1-7.

9. The display module according to claim 8, characterized in that, It also includes a display panel, which is bonded to the side of the lamp panel away from the base plate by tape.

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