CN209843110U - Backlight module and display device - Google Patents
Backlight module and display device Download PDFInfo
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- CN209843110U CN209843110U CN201921004701.7U CN201921004701U CN209843110U CN 209843110 U CN209843110 U CN 209843110U CN 201921004701 U CN201921004701 U CN 201921004701U CN 209843110 U CN209843110 U CN 209843110U
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Abstract
The application provides a backlight unit and display device, wherein backlight unit includes: the lamp strip comprises a backboard, a plurality of lamp strips which are separately arranged on the backboard, a supporting cushion block which is fixedly attached to the backboard and positioned on one side, close to the edge of the backboard, of the lamp strip at the outermost side, and a reflector plate which is fixedly attached to the supporting cushion block, wherein the lamp strip comprises a light source. The problem that the reflector plate floats above the surface of the lamp strip to generate bright spots of the lamp shadow can be avoided by fixing the attached reflector plate through the supporting cushion block, so that the side edge of the reflector plate can be uniformly transited to the upper surface of the back plate, and the uniformity of the picture is improved.
Description
Technical Field
The utility model relates to a show technical field, especially relate to a backlight unit and display device.
Background
With the development of display products, thinner and thinner products are favored by consumers, and considering factors such as cost and appearance, a direct-type short OD (optical distance) product will replace a conventional side-entry product as a mainstream design solution, but a reflector of the short OD product is easily higher than an LENS (LENS, which is mounted above an LED lamp and used for diffusing LED light) due to stress, resulting in bright spots of the lamp.
In order to solve the problem of the bright spots of the lamp, the following solutions are available:
firstly, a row of screws are respectively added at the positions, close to the lamp strip, of the outer side of the reflector plate and locked on the substrate, and because the reflectivity of the screws is different from that of the reflector plate, the scheme is easy to generate bright or dark MURA;
secondly, the material of the reflector plate is changed, and a soft material is selected, so that the side edge of the reflector plate is easy to collapse, the reflector plate at the central position is easy to warp and float, the picture effect fluctuation is large, and the management and control cannot be realized;
it can be seen that the above conventional schemes have poor picture uniformity.
SUMMERY OF THE UTILITY MODEL
The utility model provides a backlight module and a display device to improve the picture uniformity.
In order to solve the guess problem, the utility model discloses a backlight module, backlight module includes:
the lamp strip comprises a backboard, a plurality of lamp strips which are arranged on the backboard in a separated mode, a supporting cushion block which is fixedly attached to the backboard and located on the outermost side of the lamp strip and close to one side of the edge of the backboard, and a reflecting sheet which is fixedly attached to the supporting cushion block, wherein the lamp strips comprise light sources.
Optionally, the back plate comprises a bottom plate and a side plate connected with the periphery of the bottom plate, wherein an obtuse angle is formed between the side plate and the bottom plate, and the light bar and the supporting cushion block are both arranged on the bottom plate;
the reflector plate comprises a bottom plate and side plates, the bottom plate covers the supporting cushion block, the light bar and the exposed part of the bottom plate, the side plates are connected with the periphery of the bottom plate, and avoidance holes corresponding to the light source positions are formed in the bottom plate.
Optionally, the back plate further comprises a top plate connected to an edge of one side of the side plate away from the bottom plate, and the top plate is parallel to the bottom plate and extends towards one side of the side plate away from the bottom plate;
the reflector plate further comprises a top plate connected with the edge of one side, away from the bottom plate, of the side plate, wherein the top plate is overlapped on one side, away from the bottom plate, of the top plate.
Optionally, the light bar includes a circuit board extending along a first direction, the light source is disposed on the circuit board, and the thickness of the supporting pad is smaller than or equal to that of the circuit board.
Optionally, the thickness of the supporting cushion block is equal to the thickness of the circuit board.
Optionally, the supporting cushion block is a strip structure and extends along the first direction, and a width of the supporting cushion block in the first direction is equal to a width of the circuit board in the first direction.
Optionally, the supporting cushion blocks, the back plate and the reflector plate are fixed and attached by bonding.
Optionally, the supporting pad includes a supporting body, and the supporting body is adhered and fixed to the back plate through a double-sided adhesive tape on a surface of the supporting body near one side of the back plate, and is adhered and fixed to the reflection sheet through a double-sided adhesive tape on a surface of the supporting body near one side of the reflection sheet.
Optionally, the supporting pad includes a supporting body, and the supporting body is adhered and fixed to the back plate through glue on a surface of the supporting body close to one side of the back plate, and is adhered and fixed to the reflector plate through glue on a surface of the supporting body close to one side of the reflector plate.
Optionally, the distance between the supporting cushion block and the first light bar is less than or equal to 5mm, and the first light bar is the light bar closest to the supporting cushion block.
Optionally, the material of the bolster block comprises a foam material.
In order to solve the guessing problem, the utility model also discloses a display device, display device includes arbitrary embodiment backlight unit.
Compared with the prior art, the utility model discloses a following advantage:
the technical scheme that this application provided, through the fixed reflector plate of lip block, can avoid the reflector plate to float and be higher than the lamp strip surface and produce the problem of lamp shadow bright speck for the reflector plate side can evenly transition to the upper surface of backplate, thereby promotes the picture homogeneity.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic cross-sectional view illustrating a backlight module according to an embodiment of the present disclosure;
fig. 2 is a schematic plan view illustrating a backlight module according to an embodiment of the present disclosure.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and are not limiting of the invention. It should be noted that, for convenience of description, only the relevant portions of the related inventions are shown in the drawings.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. 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.
In addition, it should be noted that the terms of orientation such as left, right, up and down in the embodiments of the present invention are only relative concepts or reference to the normal use state of the product, and should not be considered as limiting. The following describes the implementation of the present invention in detail with reference to specific embodiments.
The inventors have found that short OD products require a uniform transition from the reflector side edge to the upper surface of the backplate, the more uniform the transition, the better the picture. In order to ensure the uniformity transition of the reflector plate, the reflector plate in the short OD product cannot be folded in half, so that the phenomenon that the dark edge is generated due to uneven reflection caused by the folding line is avoided. However, the phenomenon that the reflector plate is higher than LENS due to stress can be generated when the reflector plate is not folded in half, and bright spots of the lamp can be caused.
In order to solve this problem, an embodiment of the present application provides a backlight module, which includes, with reference to fig. 1 and 2: backplate 11, set up a plurality of lamp strips 12 on backplate 11 separately, fixed attached on backplate 11, be located the outside lamp strip and be close to the lip block 13 of backplate 11 edge one side to and fixed attached reflector plate 14 on lip block 13, wherein, lamp strip 12 includes the light source.
Here, the light bar 12 may include a circuit board PCB121 extending along the first direction, the light source 122 (e.g., LED) is disposed on the circuit board PCB121, and the LENS123 may be disposed on the light source 122. In practice, the circuit board PCB121 may be fixed to the back plate 11 by screws. One or more light sources 122 may be included on light bar 12.
The fixing and attaching manner between the supporting pad 13 and the reflective sheet 14 and the back plate 11 can be various, such as bonding, welding, electrostatic attaching, etc., and all the attaching manners capable of fixing the reflective sheet and the back plate are within the protection scope of the present embodiment. Note that the fixing and attaching manner between the lip block 13 and the reflective sheet 14 may be the same as or different from the fixing and attaching manner between the lip block 13 and the back plate 11.
The backlight module provided by the embodiment can avoid the problem that the reflector plate floats above the surface of the lamp strip to generate the bright spots of the lamp shadow by fixing the attached reflector plate by the supporting cushion block, so that the side edge of the reflector plate can be uniformly transited to the upper surface of the back plate, and the uniformity of the picture is improved.
In one implementation, referring to fig. 1, the back panel 11 may include a bottom panel 111 and a side panel 112 connected to a periphery of the bottom panel 111, wherein the side panel 112 and the bottom panel 111 are disposed at an obtuse angle, and the light bar 12 and the supporting pad 13 are disposed on the bottom panel 111.
The reflective sheet 14 may include a bottom plate 141 covering the supporting pad 13, the light bar 12 and the exposed portion of the bottom plate 111, and a side plate 142 connected to the periphery of the bottom plate 141, wherein the bottom plate 141 is provided with an avoiding hole corresponding to the position of the light source 122.
In practical applications, the back panel 11 may further include a top panel 113 connected to an edge of the side panel 112 facing away from the bottom panel 111, the top panel 113 being parallel to the bottom panel 111 and extending toward a side of the side panel 112 facing away from the bottom panel 111; the reflective sheet 14 may further comprise a top sheet 143 connected to an edge of the side sheet 142 on a side facing away from the back sheet 141, wherein the top sheet 143 overlaps a side of the top sheet 113 facing away from the bottom sheet 111.
In order to prevent the reflective sheet 14 from blocking light, each light source may be disposed to protrude from the reflective sheet 14 through an escape hole.
In this implementation, because top plate 143 overlap joint produces stress on roof 113, through the fixed film 141 of lip block 13, can show to improve and produce the bright spot problem of side because film 141 floats to be higher than lamp strip LENS surface, guarantee simultaneously that the even transition of side piece 142 to the upper surface (the roof) of backplate to promote picture homogeneity.
The following description will specifically discuss the fixing manner of the spacers 13, the back plate 11, and the reflection sheet 14 as an example of the adhesive fixing.
In one implementation, the supporting pad 13 may include a supporting body, and is adhered and fixed to the back plate 11 through a double-sided adhesive tape on a surface of the supporting body near one side of the back plate 11, and is adhered and fixed to the reflection sheet 14 through a double-sided adhesive tape on a surface of the supporting body near one side of the reflection sheet 14.
In another implementation, the supporting pad 13 may include a supporting body, and is adhered and fixed to the back plate 11 by glue on a surface of the supporting body near one side of the back plate 11, and is adhered and fixed to the reflecting sheet 14 by glue on a surface of the supporting body near one side of the reflecting sheet 14.
The material of the support body may be a foam material or a material (such as ceramic, aluminum oxide, aluminum nitride) the same as that of the PCB, and the like, and all materials capable of supporting are within the protection scope of the embodiment.
The utility model provides a pair of backlight unit, through the supporter of the attached double faced adhesive tape of upper and lower surface or coating glue, the lower surface of supporter is attached on the backplate, and upper surface and reflector plate contact, fixed reflector plate prevent that short OD product from because of reflector plate side stress is big, and the reflector plate floats and is higher than the problem that the lamp strip surface produced the side bright spot, guarantees the reflector plate side and evenly passes through to the backplate upper surface simultaneously to promote the picture homogeneity.
The thickness of the supporting cushion block 13 may be smaller than or equal to the thickness of the circuit board in the light bar 12. In order to further improve the transition uniformity of the side piece of the reflector plate and avoid the problems of dark edges and the like caused by creases generated on the reflector plate, the thickness of the supporting cushion block 13 can be set to be equal to the thickness of the circuit board in the light bar 12. In practical applications, the thickness of the lip block 13 may be greater than or equal to 0.8mm and less than or equal to 1.2 mm.
The supporting cushion block 13 is a strip-shaped structure and extends along a first direction, and the width of the supporting cushion block 13 in the first direction may be equal to the width of the circuit board in the first direction, where the first direction is the extending direction of the light bar 12 (circuit board). In practical applications, the width of the lip block 13 in the first direction may be adjusted according to practical requirements.
The width of the lip block 13 in the second direction perpendicular to the extending direction of the light bar 12 (circuit board) may be greater than or equal to 10mm and less than or equal to 18 mm. In practical applications, the width of the lip block 13 in the second direction can be adjusted according to practical requirements.
The distance between lip block 13 and the first lamp strip is less than or equal to 5mm, and first lamp strip is the lamp strip 12 nearest apart from lip block 13. In fig. 1, the distance between the left side supporting cushion block 13 and the leftmost light bar (first light bar) is about zero, and the distance between the right side supporting cushion block 13 and the rightmost light bar (first light bar) is about zero, that is, the supporting cushion block 13 clings to the first light bar. In practical application, the distance between lip block 13 and the first lamp strip can be adjusted according to actual need.
As shown in fig. 1 and 2, the thickness of the supporting cushion block 13 is the same as the thickness of the circuit board in the light bar 12, the thickness of the supporting cushion block and the thickness of the circuit board are both 1mm, the supporting cushion block 13 is closely attached to the outer side of the first light bar, the lower surface of the supporting cushion block 13 is attached to the back plate through double-faced adhesive tape, and the upper surface is attached to the fixed reflector plate through double-faced adhesive tape, so that the reflector plate is ensured to be uniformly transited to the upper surface of the back plate, the problem of floating height is avoided.
In practical applications, the backlight module may further include an optical element 15, which may specifically include a light guide plate, a diffusion plate, and the like.
Another embodiment of the present application provides a display device, which includes the backlight module according to any one of the embodiments.
The display device in this embodiment may be: any product or component with a display function, such as a display panel, electronic paper, a mobile phone, a tablet computer, a television, a notebook computer, a digital photo frame, a navigator and the like.
The embodiment of the application provides a backlight unit and display device, wherein backlight unit includes: the lamp strip comprises a backboard, a plurality of lamp strips which are separately arranged on the backboard, a supporting cushion block which is fixedly attached to the backboard and positioned on one side, close to the edge of the backboard, of the lamp strip at the outermost side, and a reflector plate which is fixedly attached to the supporting cushion block, wherein the lamp strip comprises a light source. The problem that the reflector plate floats above the surface of the lamp strip to generate bright spots of the lamp shadow can be avoided by fixing the attached reflector plate through the supporting cushion block, so that the side edge of the reflector plate can be uniformly transited to the upper surface of the back plate, and the uniformity of the picture is improved.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the use of the phrase "comprising a. -. said" to define an element does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.
The backlight module and the display device provided by the present invention are introduced in detail, and the principle and the implementation of the present invention are explained by using specific examples, and the descriptions of the above examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.
Claims (12)
1. A backlight module is characterized in that the backlight module comprises:
the lamp strip comprises a backboard, a plurality of lamp strips which are arranged on the backboard in a separated mode, a supporting cushion block which is fixedly attached to the backboard and located on the outermost side of the lamp strip and close to one side of the edge of the backboard, and a reflecting sheet which is fixedly attached to the supporting cushion block, wherein the lamp strips comprise light sources.
2. The backlight module of claim 1, wherein the back plate comprises a bottom plate and a side plate connected to a periphery of the bottom plate, wherein the side plate is disposed at an obtuse angle with respect to the bottom plate, and the light bar and the spacer block are disposed on the bottom plate;
the reflector plate comprises a bottom plate and side plates, the bottom plate covers the supporting cushion block, the light bar and the exposed part of the bottom plate, the side plates are connected with the periphery of the bottom plate, and avoidance holes corresponding to the light source positions are formed in the bottom plate.
3. The backlight module according to claim 2, wherein the back plate further comprises a top plate connected to an edge of a side of the side plate facing away from the bottom plate, the top plate being parallel to the bottom plate and extending toward a side of the side plate facing away from the bottom plate;
the reflector plate further comprises a top plate connected with the edge of one side, away from the bottom plate, of the side plate, wherein the top plate is overlapped on one side, away from the bottom plate, of the top plate.
4. The backlight module of claim 2, wherein the light bar comprises a circuit board extending along a first direction, the light source is disposed on the circuit board, and the thickness of the spacer is less than or equal to the thickness of the circuit board.
5. The backlight module of claim 4, wherein the thickness of the spacer is equal to the thickness of the circuit board.
6. The backlight module of claim 4, wherein the spacers are strip-shaped structures extending along the first direction, and the width of the spacers in the first direction is equal to the width of the circuit board in the first direction.
7. The backlight module according to claim 2, wherein the supporting pads are fixed to the back plate and the reflective sheet by bonding.
8. The backlight module according to claim 7, wherein the supporting pad comprises a supporting body, and the supporting body is adhered to the back plate through a double-sided adhesive tape on a surface of the supporting body adjacent to one side of the back plate, and the supporting body is adhered to the reflecting sheet through a double-sided adhesive tape on a surface of the supporting body adjacent to one side of the reflecting sheet.
9. The backlight module according to claim 7, wherein the supporting pad comprises a supporting body, and the supporting body is adhered to the back plate by glue on a surface of the supporting body adjacent to one side of the back plate, and the supporting body is adhered to the reflecting sheet by glue on a surface of the supporting body adjacent to one side of the reflecting sheet.
10. The backlight module of any one of claims 1 to 9, wherein the distance between the spacer block and the first light bar is less than or equal to 5mm, and the first light bar is the light bar closest to the spacer block.
11. The backlight module according to any of claims 1-9, wherein the material of the spacers comprises a foam material.
12. A display device, characterized in that the display device comprises a backlight module according to any one of claims 1 to 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921004701.7U CN209843110U (en) | 2019-06-28 | 2019-06-28 | Backlight module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921004701.7U CN209843110U (en) | 2019-06-28 | 2019-06-28 | Backlight module and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209843110U true CN209843110U (en) | 2019-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921004701.7U Active CN209843110U (en) | 2019-06-28 | 2019-06-28 | Backlight module and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209843110U (en) |
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2019
- 2019-06-28 CN CN201921004701.7U patent/CN209843110U/en active Active
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