CN109633807B - Backlight module, display module and display device - Google Patents
Backlight module, display module and display device Download PDFInfo
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- CN109633807B CN109633807B CN201910143044.2A CN201910143044A CN109633807B CN 109633807 B CN109633807 B CN 109633807B CN 201910143044 A CN201910143044 A CN 201910143044A CN 109633807 B CN109633807 B CN 109633807B
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- circuit board
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0083—Details of electrical connections of light sources to drivers, circuit boards, or the like
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
- G02B6/0073—Light emitting diode [LED]
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0086—Positioning aspects
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- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Planar Illumination Modules (AREA)
Abstract
The application provides a backlight unit, display module assembly, display device for realize backlight unit's narrow frame, and reinforcing backlight unit bulk strength prevents fragmentation, abnormal sound, draws different scheduling problem. The backlight module comprises a back plate, a light guide plate, a light emitting lamp bar and a printed circuit board; the back plate comprises a bottom plate, side plates and a top plate; the side plate is arranged between the bottom plate and the top plate, and the top plate is used for bearing the display panel; the printed circuit board is connected with the display panel and is arranged in an accommodating space formed by the top plate, the side plates and the bottom plate; the light bar is arranged in the accommodating space and is embedded into one side of the printed circuit board facing the light guide plate. Because printed circuit board sets up in accommodation space, and in the light-emitting lamp strip was embedded into printed circuit board towards the side of light guide plate, consequently, saved the shared outside space of original printed circuit board, can reduce backlight unit vertical direction size, realize narrow frame setting, and can strengthen backlight unit bulk strength, prevent broken piece, abnormal sound, draw different scheduling problem.
Description
Technical Field
The application relates to the technical field of display, especially, relate to a backlight unit, display module assembly, display device.
Background
At present, the Notebook (Notebook, NB) market is increasingly demanding for ultra-narrow borders, and the backlight module design for ultra-narrow borders is usually realized by continuously reducing the thickness of the backlight internal parts.
However, the inventor of the present application has found that, at present, this method is limited to the processing thickness limit of the components, and the frame design of the backlight module cannot be further reduced, especially the distance from the display area of the display panel to the outer edge of the printed circuit board is difficult to reduce; in addition, the existing design mode has the disadvantages that the overall strength of the backlight module is reduced due to the continuously thinner thickness of parts, and various problems such as fragments, abnormal sound, abnormal pictures and the like are inevitable when the whole system is tested.
Disclosure of Invention
In view of this, an object of the present application is to provide a backlight module, a display module and a display device, which are used to realize a narrow frame of the backlight module, enhance the overall strength of the backlight module, and prevent the problems of chipping, abnormal sound, abnormal picture and the like.
In order to achieve the above object, the present application provides the following technical solutions:
in a first aspect, a backlight module is provided, which includes a back plate, a light guide plate, a light bar and a printed circuit board;
the back plate comprises a bottom plate, side plates and a top plate;
the side plate is arranged between the bottom plate and the top plate, and the top plate is used for bearing a display panel;
the printed circuit board is connected with the display panel and is arranged in an accommodating space formed by the top plate, the side plates and the bottom plate;
the light emitting lamp strip is arranged in the accommodating space and is embedded into one side of the printed circuit board facing the light guide plate.
Optionally, an L-shaped step groove is formed in one side of the printed circuit board facing the light guide plate, and the light emitting lamp strip is embedded into the L-shaped step groove; or the like, or, alternatively,
one side of the printed circuit board facing the light guide plate is provided with a through U-shaped groove, and the light emitting lamp strip is embedded into the U-shaped groove.
Optionally, the light emitting surface of the light emitting lamp bar is flush with the side edge of the printed circuit board facing the light guide plate; or the light emitting surface of the light emitting lamp strip protrudes out of the side edge of the printed circuit board facing the light guide plate.
Optionally, the light emitting surface of the light emitting lamp bar is arranged in contact with the light guide plate; or the light emitting surface of the light emitting lamp bar and the side edge of the printed circuit board facing the light guide plate are both in contact with the light guide plate.
Optionally, the backlight module further comprises a first flexible circuit board, and the bottom plate is provided with a first opening;
one end of the first flexible circuit board is connected with a system connector, and the other end of the first flexible circuit board penetrates through the first opening to be connected with the printed circuit board.
Optionally, the backlight module further includes a second flexible circuit board, and the top plate is provided with a second opening;
one end of the second flexible circuit board is bound on the array substrate included by the display panel, and the other end of the second flexible circuit board penetrates through the second opening hole to be connected with the printed circuit board.
Optionally, the backlight module further comprises an upper insulating tape and/or a lower insulating tape;
the upper insulating adhesive tape is arranged on one side, facing the bottom plate, of the top plate, and the lower insulating adhesive tape is arranged on one side, facing the top plate, of the bottom plate.
Optionally, the upper insulating tape and the lower insulating tape are made of the same material and have the same thickness.
Optionally, the printed circuit board is provided with a serial or parallel wiring of the light emitting lamp strips.
Optionally, the light bar comprises a plurality of organic light emitting diodes arranged in series or in parallel.
In a second aspect, a display module is provided, which includes the backlight module provided in the first aspect.
In a third aspect, a display device is provided, which includes the display module provided in the second aspect.
Compared with the prior art, the scheme of the application has the following beneficial effects:
the utility model provides a printed circuit board that backlight unit includes sets up at the roof, in the accommodation space that curb plate and bottom plate formed, compared with the prior art, no longer need adopt the support that stretches out from the backplate to support, also no longer need dig the hole that supplies the support to stretch out in the backplate bottom, consequently, module bulk strength can be promoted, deformation and the piece condition that appears when avoiding system pressure test, and with the printed circuit board setting at the roof, the setting mode in the accommodation space that curb plate and bottom plate formed, no longer need set up the support, consequently when carrying out the complete machine experiment of opening and shutting, the deformation problem of support does not exist, can avoid the abnormal sound that prior art appears, draw different problems.
In addition, with the light emitting lamp strip embedding printed circuit board one side towards the light guide plate in this application embodiment, if picture quality will be guaranteed, this application embodiment must accomplish with printed circuit board with the light guide plate as long as or be greater than the length of light guide plate, just so can make the whole effective light emitting area that gets into the light guide plate of light, consequently this application embodiment can increase printed circuit board length direction size, thereby effectively reduce printed circuit board width direction size and thickness direction size, can further reduce the width of backlight unit frame, and reduce backlight unit's thickness.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of a display module according to the related art;
fig. 2 is a schematic structural diagram of a display module provided in the present application;
FIG. 3 is a schematic structural diagram of a printed circuit board included in the display module according to the present invention connected to a system connector outside the display module;
fig. 4 is a schematic structural diagram of a connection between a printed circuit board included in the display module and a flexible circuit board bound to the array substrate.
Description of reference numerals:
1-a reflective sheet; 2-a light guide plate; 3-lower diffusion sheet; 4-lower prism sheet; 5-upper prism sheet; 6-upper diffusion sheet; 7-an array substrate; 8-a color film substrate; 9-glue frame; 10-a light bar; 11-a printed circuit board; 12-applying an insulating adhesive tape; 13-a back plate; 14-lower insulating tape; 15-a first flexible circuit board; 16-a second flexible circuit board; 17-a system connector; 18-a scaffold;
21-a display panel; 131-a bottom plate; 132-side plate; 133-top plate; 31-organic light emitting diodes; 41-second opening.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Further, "connected" as used herein may include wirelessly connected. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.
It will be understood by those within the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
As shown in fig. 1, it can be known from fig. 1 that a conventional printed circuit board 11 of a display module is located outside a backlight module, so that the dimension of the backlight module in the vertical direction (i.e., the horizontal direction in fig. 1) cannot be further reduced, which affects the design of a narrow frame.
In addition, as shown in fig. 1, the inventor of the present application has found that, in the prior art, the printed circuit board 11 is located outside the back plate 13, supported by the brackets 18 extending from the back plate 13, and fixed by screws, since the brackets 18 (usually two) need to extend from the back plate 13, a hole needs to be drilled in the bottom of the back plate 13 to enable the bracket 18 to extend from the back plate 13, which may cause the overall strength of the back plate 13 to decrease, and the bracket 18 may often deform due to the fixing of the printed circuit board 11 by the two brackets 18, which may easily cause problems such as abnormal sound and abnormal drawing when performing an opening and closing experiment of the whole device.
In order to solve the above problems, embodiments of the present application provide a new backlight module structure.
The following describes a specific technical solution of an embodiment of the present application with reference to the drawings.
As shown in fig. 2, the backlight module includes a back plate 13, a light guide plate 2, a light bar 10 and a printed circuit board 11; the back panel 13 includes a bottom panel 131, side panels 132, and a top panel 133; the side plate 132 is disposed between the bottom plate 131 and the top plate 133, and the top plate 133 is used for supporting the display panel 21; the printed circuit board 11 is connected to the display panel 21 (a specific connection is not shown in fig. 2, and the connection relationship will be described later), and the printed circuit board 11 and the light bar 10 are disposed in the accommodating space formed by the top plate 133, the side plate 132 and the bottom plate 131, wherein the light bar 10 is embedded in a side of the printed circuit board 11 facing the light guide plate 2.
The backlight module provided by the embodiment of the present application includes the printed circuit board 11 disposed in the accommodating space formed by the top plate 133, the side plate 132 and the bottom plate 131, the top plate 133, the side plate 132 and the bottom plate 131 are integrally formed, and the formed accommodating space is a U-shaped space, that is, the printed circuit board 11 is disposed in the U-shaped space of the back plate, compared with the prior art, there is no need to use the support 18 extending from the back plate 13 for supporting, and there is no need to dig a hole for extending the support 18 at the bottom of the back plate 13, thereby improving the overall strength of the module, avoiding the deformation and fragmentation during the pressure test of the system, and the printed circuit board 11 is arranged in the U-shaped space of the back plate, the bracket 18 is not needed to be arranged, therefore, the problem of deformation of the bracket 18 does not exist during the opening and closing experiment of the whole machine, so that the problems of abnormal sound and abnormal drawing in the prior art can be avoided.
In addition, because the printed circuit board 11 of the prior art is located outside the back plate 13, the arrangement manner of the prior art is limited by a client system, the printed circuit board 11 cannot be as long as the light guide plate 2, and the light bar 10 is embedded in the side of the printed circuit board 11 facing the light guide plate 2 in the embodiment of the present application, if picture quality is to be ensured, the printed circuit board 11 of the embodiment of the present application must be as long as the light guide plate 2 or longer than the length of the light guide plate 2, as shown in fig. 3, so that light can completely enter the effective light emitting surface of the light guide plate 2, and thus the size of the printed circuit board 11 in the length direction (horizontal direction in fig. 3) can be increased, after the size of the printed circuit board 11 in the length direction is increased, there is enough space in the length direction to arrange more components, and the arrangement of the components in the width direction of the printed circuit board 11 can be reduced, meanwhile, the number of layers of the printed circuit board 11 can be reduced, so that the size of the printed circuit board 11 in the width direction (vertical direction in fig. 3) and the size of the printed circuit board 11 in the thickness direction (vertical paper direction in fig. 3) can be effectively reduced, the width of the frame of the backlight module can be further reduced, and the thickness of the backlight module can be further reduced.
Specifically, in the embodiment of the present application, the printed circuit board 11 is provided with the serial or parallel trace of the light emitting bar 10, and since the serial or parallel trace of the light emitting bar 10 is provided inside the printed circuit board in the embodiment of the present application, the light emitting bar 10 can directly control light emission through the printed circuit board 11, compared with the prior art that the light emitting bar 10 needs to include the organic light emitting diode, the flexible circuit board located below the organic light emitting diode for supplying power to the organic light emitting diode, and the gold finger connected to the flexible circuit board, the embodiment of the present application can omit the flexible circuit board and the gold finger of the light emitting bar 10 itself, and can maximally increase the dimension in the length direction (horizontal direction in fig. 3) of the printed circuit board, thereby effectively reducing the dimension in the width direction (vertical direction in fig. 3) and the dimension in the thickness direction (vertical paper direction in fig. 3), the width of the frame of the backlight module can be further reduced, and the thickness of the backlight module can be further reduced.
Specifically, the light bar 10 in the embodiment of the present application includes a plurality of organic light emitting diodes arranged in series or in parallel, and this design is mature at present, the generation cost is low, and the light emitting effect of the manufactured light bar is good.
In an alternative embodiment, the printed circuit board 11 in the embodiment of the present application is provided with an L-shaped step groove on a side facing the light guide plate 2, as shown in fig. 2, and the light bar 10 is embedded in the L-shaped step groove.
In another alternative embodiment, the side of the printed circuit board 11 facing the light guide plate 2 in the embodiment of the present application is provided with a U-shaped groove penetrating in the thickness direction of the printed circuit board 11, and the light bar 10 is embedded in the U-shaped groove.
Certainly, during actual design, the light bar 10 can be embedded into the printed circuit board 11 through other designs, and the way of embedding the light bar 10 into the side edge of the printed circuit board 11 is determined according to the thickness of the light bar 10 and the thickness of the printed circuit board 11, specifically, when the thickness of the printed circuit board 11 is greater than the thickness of the light bar 10, an L-shaped step groove which is not dug through in the thickness direction of the printed circuit board 11 can be selected for stable fixation; when the thickness of the printed circuit board 11 is smaller than the thickness of the light bar 10, a U-shaped groove may be selected to be cut through in the thickness direction of the printed circuit board 11.
After the light bar 10 is embedded into one side of the printed circuit board 11, specifically, the light emitting surface of the light bar 10 in the embodiment of the present invention is flush with the side of the printed circuit board 11 facing the light guide plate 2, as shown in fig. 2, of course, the light emitting surface of the light bar 10 may also protrude out of the side of the printed circuit board 11 facing the light guide plate 2 during the actual design.
In order to further improve the light emitting effect of the backlight source, the light emitting surface of the light bar 10 in the embodiment of the present application is in contact with the light guide plate 2; or, the light emitting surface of the light bar 10 and the side of the printed circuit board 11 facing the light guide plate 2 are both in contact with the light guide plate 2.
In a specific embodiment, the backlight module in the embodiment of the present application includes an upper insulating tape 12 and/or a lower insulating tape 14, as shown in fig. 2, and fig. 2 shows that the backlight module includes the upper insulating tape 12 and the lower insulating tape 14; the upper insulating tape 12 is arranged on the side of the top plate 133 facing the bottom plate 131, and the lower insulating tape 14 is arranged on the side of the bottom plate 131 facing the top plate 133; the arrangement of the upper insulating tape 12 and the lower insulating tape 14 can effectively prevent the backboard from contacting with the surface components of the printed circuit board 11 to cause short circuit.
In specific implementation, generally, a process fillet exists in a U-shaped structure composed of the bottom plate 131, the side plate 132 and the top plate 133 included in the back plate of the embodiment of the present application, during assembly, the side of the printed circuit board 11 does not completely contact with the side plate 132, and during actual design, only the side wall of the side plate 132 facing the printed circuit board 11 needs to be coated with an insulating material.
Specifically, the upper insulating tape 12 and the lower insulating tape 14 in the embodiment of the present application are made of the same material and have the same thickness, so that the material selection cost can be saved, and the upper insulating tape 12 and the lower insulating tape 14 can be designed by the same method, so that the production efficiency is improved, and the production cost is saved.
In a specific embodiment, as shown in fig. 3, the backlight module in the embodiment of the present application further includes a first flexible circuit board 15, the bottom plate 131 is provided with a first opening (not shown), one end of the first flexible circuit board 15 is connected to the system connector 17, and the other end of the first flexible circuit board passes through the first opening to be connected to the printed circuit board 11.
As shown in fig. 3, in the embodiment of the present application, the printed circuit board 11 disposed in the accommodating space formed by the top plate 133, the side plate 132, and the bottom plate 131 is connected to the system connector 17 located outside the backlight module through the first flexible circuit board 15, that is, the embodiment of the present application adopts a rigid-flex board to implement an interaction function with a client system, the first flexible circuit board 15 is flexible in position, and can satisfy the connection between the printed circuit board 11 and the system connectors 17 located at different positions, so that the system connector 17 is free from the constraint of the fixed position of the printed circuit board 11, and is more convenient in the interaction space with the client system, and the specific setting position of the system connector 17 is set according to the requirements of the client.
Specifically, system connector 17 welds on printed circuit board 11 usually, printed circuit board 11 sets up in the U type space of backplate in this application embodiment, if continue to adopt the welding mode, system connector 17 can produce the interference with the backplate, and can influence whole backlight unit's thickness, even adopt the mode of backplate hole digging to avoid interfering, system connector 17 also can produce the risk of interfering with the customer system, this application embodiment adopts the combination mode of first flexible circuit board 15 and printed circuit board 11, can set up system connector 17 in the outside of backplate, and then the production of avoiding interfering that can be fine, also make things convenient for the regulation of position when system connector 17 interacts with the customer system simultaneously more.
As shown in fig. 4, in a specific embodiment, the backlight module in the embodiment of the present application further includes a second flexible circuit board 16, and the top plate 133 is provided with a second opening 41; one end of the second flexible circuit board 16 is bound to the array substrate 7 included in the display panel, and the other end passes through the second opening 41 to be connected to the printed circuit board 11.
Based on the same inventive concept, the embodiment of the application further provides a display module, which comprises the backlight module provided by the embodiment of the application. The beneficial effects of the display module assembly provided by the embodiment of the application are the same as those generated by the backlight module assembly, and are not repeated here.
Based on the same inventive concept, the embodiment of the application further provides a display device, which comprises the display module provided by the embodiment of the application. The beneficial effects of the display device provided by the embodiment of the application are the same as those generated by the display module, and are not repeated here.
To sum up, the application provides a backlight unit has following beneficial effect:
first, the backlight unit that this application embodiment provided is because printed circuit board sets up at the roof, in the accommodation space that curb plate and bottom plate formed, compared with the prior art, no longer need adopt the support that stretches out from the backplate to support, also no longer need dig the hole that supplies the support to stretch out in the backplate bottom, consequently, can promote module bulk strength, deformation and the piece condition that appears when avoiding system pressure test, and set up printed circuit board at the roof, the setting mode in the accommodation space that curb plate and bottom plate formed, no longer need set up the support, consequently when carrying out the complete machine experiment of opening and shutting, the deformation problem of support does not exist, can avoid the abnormal sound that prior art appears, draw different problems.
Second, this application embodiment imbeds the light strip printed circuit board one side towards the light guide plate, if guarantee picture quality, this application embodiment must accomplish with printed circuit board the same length with the light guide plate or be greater than the length of light guide plate, just so can make the whole effective light emitting area that gets into the light guide plate of light, consequently this application embodiment can increase printed circuit board length direction size, thereby effectively reduce printed circuit board width direction size and thickness direction size, can further reduce the width of backlight unit frame, and reduce backlight unit's thickness.
Third, printed circuit board of this application embodiment is provided with the series connection or the parallel connection of light emitting lamp strip and walks the line, need include organic light emitting diode with prior art light emitting lamp strip, a flexible circuit board for giving organic light emitting diode power supply, and compare with the golden finger that flexible circuit board is connected, the setting of the flexible circuit board and the golden finger of light emitting lamp strip self can be saved to this application embodiment, can maximum range increase printed circuit board length direction size, thereby effectively reduce width direction size and thickness direction size, can further reduce the width of backlight unit frame, and reduce backlight unit's thickness.
Fourth, this application embodiment will set up at the roof through first flexible circuit board, the printed circuit board in the accommodation space that curb plate and bottom plate formed is connected with the outside system connector that is located the display module assembly, this application embodiment adopts the mode realization of rigid-flex board and customer system's interactive function promptly, first flexible circuit board position is nimble, can satisfy printed circuit board and be located the system connector's of different positions department connection, can make system connector break away from the constraint of printed circuit board fixed position, it is more convenient in the interactive space with customer system, and the interference that avoids system connector and backplate to produce that can be fine.
The foregoing is only a partial embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations should also be regarded as the protection scope of the present application.
Claims (10)
1. A backlight module comprises a back plate, a light guide plate, a light-emitting lamp bar and a printed circuit board;
the back plate comprises a bottom plate, side plates and a top plate;
the side plate is arranged between the bottom plate and the top plate, and the top plate is used for bearing a display panel;
the printed circuit board is connected with the display panel and arranged in an accommodating space formed by the top plate, the side plates and the bottom plate, and the printed circuit board is provided with serial or parallel wiring of the light-emitting lamp strips;
the light emitting lamp strip is arranged in the accommodating space and is embedded into one side of the printed circuit board facing the light guide plate;
an L-shaped step groove is formed in one side, facing the light guide plate, of the printed circuit board, and the light emitting lamp strip is embedded into the L-shaped step groove; or one side of the printed circuit board facing the light guide plate is provided with a through U-shaped groove, and the light-emitting lamp strip is embedded into the U-shaped groove.
2. The backlight module as claimed in claim 1, wherein the light-emitting surface of the light bar is flush with the side of the printed circuit board facing the light guide plate; or the light emitting surface of the light emitting lamp strip protrudes out of the side edge of the printed circuit board facing the light guide plate.
3. The backlight module as claimed in claim 1, wherein the light emitting surface of the light bar is disposed in contact with the light guide plate; or the light emitting surface of the light emitting lamp bar and the side edge of the printed circuit board facing the light guide plate are both in contact with the light guide plate.
4. The backlight module according to claim 3, further comprising a first flexible circuit board, wherein the base plate is provided with a first opening;
one end of the first flexible circuit board is connected with a system connector, and the other end of the first flexible circuit board penetrates through the first opening to be connected with the printed circuit board.
5. The backlight module according to claim 3, further comprising a second flexible circuit board, wherein the top plate is provided with a second opening;
one end of the second flexible circuit board is bound on the array substrate included by the display panel, and the other end of the second flexible circuit board penetrates through the second opening hole to be connected with the printed circuit board.
6. The backlight module according to claim 4, further comprising an upper insulating tape and/or a lower insulating tape;
the upper insulating adhesive tape is arranged on one side, facing the bottom plate, of the top plate, and the lower insulating adhesive tape is arranged on one side, facing the top plate, of the bottom plate.
7. The backlight module as claimed in claim 6, wherein the upper and lower insulating tapes are made of the same material and have the same thickness.
8. The backlight module of claim 1, wherein the light bar comprises a plurality of Organic Light Emitting Diodes (OLEDs) connected in series or in parallel.
9. A display module comprising the backlight module of any one of claims 1-8.
10. A display device comprising the display module of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910143044.2A CN109633807B (en) | 2019-02-26 | 2019-02-26 | Backlight module, display module and display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910143044.2A CN109633807B (en) | 2019-02-26 | 2019-02-26 | Backlight module, display module and display device |
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| Publication Number | Publication Date |
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| CN109633807A CN109633807A (en) | 2019-04-16 |
| CN109633807B true CN109633807B (en) | 2021-11-05 |
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| CN201910143044.2A Active CN109633807B (en) | 2019-02-26 | 2019-02-26 | Backlight module, display module and display device |
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| CN111862789A (en) * | 2019-04-30 | 2020-10-30 | 京东方科技集团股份有限公司 | Backlight module, display module and display device |
| CN112258948B (en) * | 2020-11-03 | 2022-07-12 | 重庆广播电视大学重庆工商职业学院 | PCB circuit board circuit simulation analysis demonstration teaching device |
| CN114596795B (en) * | 2020-12-03 | 2023-12-29 | 京东方科技集团股份有限公司 | Display module and display device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009110737A (en) * | 2007-10-29 | 2009-05-21 | Citizen Electronics Co Ltd | Lighting device, and manufacturing method thereof |
| JP5527230B2 (en) * | 2011-01-21 | 2014-06-18 | 株式会社Ｊｖｃケンウッド | Backlight device and image display device |
| CN202708872U (en) * | 2012-08-09 | 2013-01-30 | 京东方科技集团股份有限公司 | Backlight and display device |
| CN206906744U (en) * | 2017-05-11 | 2018-01-19 | 昆山龙腾光电有限公司 | A kind of liquid crystal display device |
| CN109085721B (en) * | 2018-09-11 | 2021-11-16 | 昆山龙腾光电股份有限公司 | Backlight module and liquid crystal display device |
| CN109188768B (en) * | 2018-09-30 | 2021-09-28 | 厦门天马微电子有限公司 | Backlight module and display device |
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2019
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