CN210294751U - Light emitting diode, lamp panel, backlight module and display device - Google Patents
Light emitting diode, lamp panel, backlight module and display device Download PDFInfo
- Publication number
- CN210294751U CN210294751U CN201921081572.1U CN201921081572U CN210294751U CN 210294751 U CN210294751 U CN 210294751U CN 201921081572 U CN201921081572 U CN 201921081572U CN 210294751 U CN210294751 U CN 210294751U
- Authority
- CN
- China
- Prior art keywords
- light
- lens
- dots
- light emitting
- emitting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000031700 light absorption Effects 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 abstract description 6
- 230000002349 favourable effect Effects 0.000 abstract description 4
- 230000008033 biological extinction Effects 0.000 description 11
- 238000010586 diagram Methods 0.000 description 10
- 239000010408 film Substances 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 239000011358 absorbing material Substances 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012788 optical film Substances 0.000 description 1
- 238000013041 optical simulation Methods 0.000 description 1
- 235000009537 plain noodles Nutrition 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000010023 transfer printing Methods 0.000 description 1
Images
Landscapes
- Planar Illumination Modules (AREA)
Abstract
The utility model discloses a light emitting diode, lamp plate, backlight unit and display device, include: the lens is positioned on the light emitting side of the light emitting chip; one side of the lens facing the light-emitting chip is provided with an accommodating cavity, and the light-emitting chip is positioned in the accommodating cavity; the lens is used for adjusting the light field distribution of the emergent light of the light-emitting chip; light absorption dots are arranged in a set area of the light emergent surface of the lens; the light absorbing dots are used for absorbing light rays which enter and exit the light emitting core and reach the light absorbing dots. The light absorbing dots are arranged in the set area of the light emitting surface of the lens of the light emitting diode, and the light emitting brightness of the area can be reduced by arranging some light absorbing dots in the area with higher emergent brightness by utilizing the light absorbing property of the light absorbing dots, so that the light emitting uniformity can be improved by arranging the light absorbing dots with proper density and size in the required area. The method has good applicability and lower cost, and is favorable for market promotion.
Description
Technical Field
The utility model relates to a show technical field, especially relate to a light emitting diode, lamp plate, backlight unit and display device.
Background
Light Emitting diodes (LEDs for short) have many advantages such as high efficiency, energy saving, long life, low power consumption, and the like, and have great advantages when applied to display backlights at present. However, the led is required to have a uniform outgoing light distribution, whether as a backlight or illumination.
However, when the led is used as a backlight, the brightness of some regions is higher and the brightness of adjacent regions is lower, which causes uneven brightness, and thus a high-quality backlight cannot be provided. This phenomenon cannot be changed by adjusting the driving current of the led or adjusting the distance between the leds, so how to optimize the uniformity of the luminance of the led is a problem to be solved at present.
SUMMERY OF THE UTILITY MODEL
The utility model provides a light emitting diode, lamp plate, backlight unit and display device has better light outgoing homogeneity.
In a first aspect, the present invention provides a light emitting diode, including: the lens is positioned on the light emitting side of the light emitting chip; wherein, one side of the lens facing the light-emitting chip is provided with an accommodating cavity, and the light-emitting chip is positioned in the accommodating cavity; the lens is used for adjusting the light field distribution of emergent light of the light-emitting chip;
light absorption dots are arranged in a set area of the light emergent surface of the lens; the light absorption dots are used for absorbing light rays emitted to and coming from the light-emitting core.
In a possible implementation manner, in the above-mentioned light emitting diode provided by the present invention, the light absorbing dots are circular or polygonal in shape.
In a possible implementation manner, in the above light emitting diode provided by the present invention, the width of the light absorbing dots is at least 0.1 mm.
In a possible implementation manner, in the above light emitting diode provided by the present invention, the material of the light absorbing dots is black ink.
In a possible implementation manner, in the above light emitting diode provided by the present invention, the lens is a refractive lens, and the refractive lens includes: a light incident surface and a light emitting surface; the emergent light of the light-emitting chip is incident to the light incident surface, and the light incident surface refracts the light to the light emergent surface and emits the light from the light emergent surface.
In a possible implementation manner, in the above light emitting diode provided by the present invention, the lens is a reflective lens, and the reflective lens includes: the light incident surface, the total reflection surface and the light emergent surface; emergent light of the light-emitting chip is incident to the light incident surface, the light incident surface refracts light to the total reflection surface, and the total reflection surface reflects the light to the light emergent surface and emits the light from the light emergent surface.
A second aspect, the utility model provides a lamp panel, include: a plurality of any of the above light emitting diodes.
In a possible implementation manner, in the lamp panel provided by the present invention, the lens of the light emitting diode is a refractive lens;
the light-emitting diode positioned at the edge area of the lamp panel is provided with light-absorbing dots at the bottom area of the light-emitting surface of the lens close to the light-emitting chip;
the light emitting diodes located in the middle area of the lamp panel are located on the light emitting surface of the lens far away from the top area of the light emitting chip, and light absorption dots are arranged on the top area of the lens.
In a possible implementation manner, in the lamp panel provided by the present invention, the lens of the light emitting diode is a reflective lens;
and light absorption dots are arranged in the area, close to the bottom of the light emitting diode, of the light emitting surface of the lens.
In a possible implementation manner, the utility model provides an in the above-mentioned lamp plate, be located the distribution density and the size of the different regional light absorption net points in play plain noodles of lens are different.
Third aspect, the utility model provides a backlight module, be in including backplate and setting arbitrary lamp plate of the above-mentioned on the backplate.
In a possible implementation manner, the present invention provides an above-mentioned backlight module, further comprising: and the reflector plate is positioned between the lamp panel and the back plate.
In a fourth aspect, the present invention provides a display device, including any one of the above backlight modules and being located the display panel of the light-emitting side of the backlight module.
The utility model discloses beneficial effect as follows:
the utility model provides a light emitting diode, lamp plate, backlight unit and display device, include: the lens is positioned on the light emitting side of the light emitting chip; one side of the lens facing the light-emitting chip is provided with an accommodating cavity, and the light-emitting chip is positioned in the accommodating cavity; the lens is used for adjusting the light field distribution of the emergent light of the light-emitting chip; light absorption dots are arranged in a set area of the light emergent surface of the lens; the light absorbing dots are used for absorbing light rays which enter and exit the light emitting core and reach the light absorbing dots. The light absorbing dots are arranged in the set area of the light emitting surface of the lens of the light emitting diode, and the light emitting brightness of the area can be reduced by arranging some light absorbing dots in the area with higher emergent brightness by utilizing the light absorbing property of the light absorbing dots, so that the light emitting uniformity can be improved by arranging the light absorbing dots with proper density and size in the required area. The method has good applicability and lower cost, and is favorable for market promotion.
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 embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below 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 creative efforts.
Fig. 1 is a schematic structural diagram of a light emitting diode according to an embodiment of the present invention;
fig. 2 is a top view of a light absorbing dot provided in an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a transfer printing apparatus according to an embodiment of the present invention;
fig. 4 is a diagram illustrating a light distribution of an led using a refractive lens according to an embodiment of the present invention;
fig. 5 is a second light distribution diagram of an led employing a refractive lens according to an embodiment of the present invention;
fig. 6 is a diagram illustrating a light distribution of a light emitting diode employing a reflective lens according to an embodiment of the present invention;
fig. 7 is a second light distribution diagram of an led employing a reflective lens according to an embodiment of the present invention;
fig. 8 is a schematic structural view of a lamp panel provided in an embodiment of the present invention;
fig. 9 is a luminance distribution diagram of the lamp panel provided by the embodiment of the present invention;
fig. 10 is a third light distribution diagram of an led employing a refractive lens according to an embodiment of the present invention;
fig. 11 is a fourth light distribution diagram of a light emitting diode employing a refractive lens according to an embodiment of the present invention;
fig. 12 is a schematic structural diagram of a backlight module according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The following describes the light emitting diode, the lamp panel, the backlight module and the display device provided by the embodiments of the present invention in detail with reference to the accompanying drawings.
The embodiment of the utility model provides a first aspect provides a light emitting diode, as shown in FIG. 1, this light emitting diode includes: a light emitting chip 11 and a lens 12 positioned on the light emitting side of the light emitting chip 11; wherein, one side of the lens 12 facing the light emitting chip is provided with an accommodating cavity, and the light emitting chip 11 is positioned in the accommodating cavity; the lens 12 is used for adjusting the light field distribution of the emergent light of the light-emitting chip; in the light emitting diode provided by the embodiment of the present invention, the light absorbing dots 13 are disposed in the set area of the light emitting surface of the lens 12; the light absorbing dots 13 are used for absorbing light emitted to and from the light emitting chip 11.
The lens 12 is disposed on the light emitting side of the light emitting chip 11 to adjust the distribution of the emitted light of the light emitting chip, but the lens 12 cannot refract the emitted light to make the distribution of the emitted light of the light emitting chip 11 completely uniform, and even if parameters such as the shape, curvature, and distance from the light emitting chip 11 of the lens 12 are adjusted, there is still a limit. The embodiment of the utility model provides an above-mentioned emitting diode sets up extinction site 13 in the setting region on the light-emitting surface of lens 12, utilizes extinction site 13's extinction nature, sets up some extinction sites in the great region of emergent luminance and can reduce the light-emitting luminance in this region, from this, can accomplish the improvement to emitting diode light-emitting homogeneity through the extinction site that sets up suitable density and size in the region of needs. The mode has good applicability, can be applied to light emitting diodes in various forms, has lower cost and is beneficial to market popularization.
The top view structure of the light absorbing dots 13 is shown in fig. 2, and in practical implementation, the light absorbing dots may be circular as shown in fig. 2, or may be arranged in a polygon, such as a square, a hexagon, and the like, which is not limited herein. The shape of the light absorbing dots 13 is selected mainly in consideration of the difficulty in the manufacturing process, and the purpose of adjusting the brightness of the emergent light can be achieved by setting the distribution density and the size of the light absorbing dots, so that no specific requirements are required on the shape of the light absorbing dots 13, and the light absorbing dots can be selected as required in practical application.
In this case, the light absorbing dots 13 can be produced in the following two ways. One way to make the light absorbing screen dots is to make a plurality of convex screen dots on a soft mold, as shown in fig. 3, dip the light absorbing material in the soft mold with the convex screen dots, and transfer the dipped light absorbing material to a set position on the light emitting surface of the lens 12, so as to transfer the light absorbing screen dots 13 with a specific distribution density and a specific size on the light emitting surface of the lens 12. The other manufacturing method is that hollows corresponding to the light absorption dots 13 one by one are manufactured on the film, the light emergent surface of the lens 12 is wrapped by the film with the hollows, then the light absorption material is printed on the film, and after the printing is finished, the film is peeled off, so that the light absorption dots 13 can be formed on the light emergent surface of the lens 12. In both of the above two manufacturing processes, the light absorption dots 13 with a width of at least 0.1mm can be formed on the light emergent surface of the lens 12. The smaller the width of the light absorption dots 13 is, the higher the light control accuracy that can be realized by the light absorption dots is, and when the brightness of light needs to be slightly adjusted, the light absorption dots with smaller size can be adopted. As the process advances, the size of the light absorbing dots 13 may be further reduced, and the embodiment of the present invention is not limited herein. In practical applications, the light absorbing dots 13 may be made of black ink, and other light absorbing materials may be used, which are not limited herein.
The lens 12 on the light emitting side of the light emitting chip 11 can be classified into a refractive lens and a reflective lens according to application scenarios. In one embodiment, as shown in fig. 4, the lens 12 on the light emitting side of the light emitting chip 11 is a refractive lens, and the refractive lens includes: a light incident surface L1 and a light emitting surface L2; the emergent light of the light emitting chip 11 enters the light incident surface L1, and the light incident surface L1 refracts the light to the light emergent surface L2 and emits the light from the light emergent surface. When the surface of the refractive lens is not provided with light absorbing dots, the emergent light distribution is as shown in fig. 4. If the emergent light of some areas needs to be reduced, the light absorbing dots 13 can be arranged in the areas, the emergent light distribution after the light absorbing dots 13 are arranged is shown in fig. 5, the light emergent amount of the areas where the light absorbing dots 13 are arranged is obviously reduced, and accordingly the brightness of the parts can be reduced, so that the overall emergent light brightness can be more uniform when the light emitting diode is applied to some scenes.
In another embodiment, as shown in fig. 6, the lens 12 on the light emitting side of the light emitting chip 11 is a reflective lens, and the reflective lens includes: a light incident surface L1 ', a total reflection surface L2 ' and a light emitting surface L3 '; the emergent light of the light emitting chip 11 enters the light incident surface L1 ', the light incident surface L1 ' refracts the light to the total reflection surface L2 ', and the total reflection surface L2 ' reflects the light to the light emitting surface L3 ' and emits the light from the light emitting surface. When the surface of the reflective lens is not provided with light absorbing dots, the outgoing light distribution is as shown in fig. 6. If the emergent light of some areas needs to be reduced, the light absorbing dots 13 can be arranged in the areas, the emergent light distribution after the light absorbing dots 13 are arranged is shown in fig. 7, the light emergent amount of the areas where the light absorbing dots 13 are arranged is obviously reduced, and accordingly the brightness of the parts can be reduced, so that the overall emergent light brightness can be more uniform when the light emitting diode is applied to some scenes.
The second aspect of the embodiment of the present invention provides a lamp panel, as shown in fig. 8, the lamp panel includes a plurality of light emitting diodes 100. In a specific implementation, the light emitting diode 100 is soldered on the printed circuit board 200, and the printed circuit board 200 may be a hard board or a soft board, which is not limited herein. The printed circuit board 200 is connected to a controller, and the controller applies an electrical signal to the printed circuit board 200 to control the brightness of the light emitting diodes 100 on the lamp panel.
The embodiment of the utility model provides an above-mentioned lamp plate can regard as being shaded, is particularly suitable for being applied to straight following formula and is shaded. In order to reduce the cost, the number of the light emitting diodes can be reduced or the framework of the film material can be replaced, but the light emitting of the lamp panel is required to be uniform no matter which means is provided, and a backlight source with uniform brightness is provided. The embodiment of the utility model provides an in the above-mentioned lamp plate can set up the extinction site in the settlement region on every emitting diode 100's lens light-emitting surface, through to the adjustment that sets up position, extinction site and size of extinction site on the lens light-emitting surface, can make the lamp plate finally realize that the emergence luminance is even.
In general, after the number of leds in the lamp panel is reduced, the brightness distribution of the lamp panel is as shown in fig. 9, and the over-lighting area of the lamp panel is generally located in the edge area of the lamp panel and the middle area above the leds of the lamp panel. And the over-bright areas at the edge positions are influenced by the large-angle emergent light distribution of the light-emitting diodes at the edge positions, and the over-bright areas at the middle positions are influenced by the small-angle and/or large-angle emergent light distribution of the light-emitting diodes at the middle positions. In the specific implementation, the distribution and size of the light-absorbing mesh points on the light-emitting surface of the lens are adjusted by considering the type of the lens in the light-emitting diode.
In one implementation, the lens of the led may be a refractive lens, and the led using the refractive lens is suitable for a backlight module with a relatively large backlight thickness. The light emitting diode using the refractive lens has the outgoing light distribution as shown in fig. 4, and the outgoing light of the light emitting diode has the distribution in a range of a larger light-emitting angle. For the over-bright areas at the edge areas of the four sides of the lamp panel, the over-bright areas are mainly affected by the large-angle emergent light of the light emitting diodes located at the edge areas, so that the light emitting diodes 100 located at the edge areas of the lamp panel can be provided with light absorbing dots 13 at the light emitting surface L2 of the lens 12 near the bottom area of the light emitting chip 11, as shown in fig. 10; the light emitting diode 100 located in the middle area of the lamp panel is provided with light absorbing dots 13 in the top area of the light emitting surface L2 of the lens 12 away from the light emitting chip 11, as shown in fig. 11. Under general conditions, the light absorption dots 13 are arranged on the light emitting surface of the lens 12 within a range of 0.5-11 mm away from the bottom, and the light absorption dots 13 are arranged according to the distance of different light emitting diodes, so that the uniformity of light emitting of the lamp panel is achieved by adjusting the size and the distribution density of the light absorption dots in the area. For example, when the distance between adjacent light emitting diodes is decreased, the light overlapping area at the position between the adjacent light emitting diodes is increased, and the brightness of the overlapping area is increased, so that for the high brightness area above the light emitting diodes, the distribution density of the light absorbing dots positioned on the top of the light emitting surface of the light emitting diode lens can be properly decreased, and the size of the light absorbing dots is relatively decreased, so that the brightness of the area above the light emitting diodes and the middle area of the adjacent light emitting diodes approaches to balance, and the uniformity of the brightness is achieved.
In another practical way, the lens of the light emitting diode is a reflective lens; the light emitting diode adopting the reflective lens is suitable for a backlight module with relatively small backlight thickness. The light emitting diode using the reflective lens has the distribution of the emitted light as shown in fig. 6, and the emitted light of the light emitting diode has the distribution only in the range of the large light emitting angle. The light emitting diode is usually used in combination with a bottom reflector to emit light to the top of the light emitting diode. The light emitting diode using the reflective lens has the effect on the brightness of the edge and middle positions of the lamp panel due to the large-angle emergent light, and therefore, as shown in fig. 7, the light emitting surface L3' of the lens 12 can be arranged near the bottom area of the light emitting diode 100 to form the light absorbing dots 13. Under general conditions, the light absorption dots 13 are arranged on the light emitting surface of the lens 12 within a range of 0.5-6.5 mm from the bottom, and the light absorption dots 13 are arranged according to the distance of different light emitting diodes, so that the uniformity of light emitting of the lamp panel is achieved by adjusting the size and the distribution density of the light absorption dots in the area.
Because different areas on the light-emitting surface of the light-emitting diode lens have different degrees and ranges of influence on the final emergent light distribution of the lamp panel, the distribution density and the size of the light-absorbing mesh points can be respectively adjusted according to different areas of the light-emitting surface of the lens, and under a common condition, the distribution density and the size of the light-absorbing mesh points in different areas of the light-emitting surface of the lens are different. When the method is specifically implemented, the emergent brightness of the lamp panel can be detected firstly, the distance between the bright area and the dark area and the range of the bright area are analyzed, and the set area corresponding to the emergent surface of the lens when light enters the area is found out in the optical simulation of the lens. According to the brightness difference value of the bright area and the dark area, the size and the distribution density of light absorption dots in the set area are designed, and then the dots are transferred into the set area, so that the brightness uniformity of the lamp panel is improved. The mode setting that the extinction site passes through the rendition is on the light-emitting surface of lens, can adjust the light-emitting homogeneity of lamp plate, can adopt the scheme of extinction site to replace traditional diffuser plate, reflector plate to dig the hole, reflector plate special shape, lens change scheme such as mould to solve the poor problem of the whole bright and dark homogeneity of lamp plate from this, can directly correspond the bright region reduction luminance of picture through the design of different extinction sites, shortens the cycle that the problem improved, has good commonality.
The third aspect of the embodiment of the present invention provides a backlight module, as shown in fig. 12, the backlight module includes: backplate 2 and any lamp plate 1 of the above-mentioned of setting on backplate 2. The backlight module may further include: the light-emitting diode light source is characterized by comprising optical films such as a reflector plate positioned at the bottom of the light-emitting diode on the lamp panel, and a diffusion sheet positioned at the light-emitting side of the light-emitting diode, which are not limited herein.
The light-emitting diode in the backlight module sets the light-absorbing dots in the set area on the light-emitting surface of the lens, and the light-absorbing property of the light-absorbing dots is utilized, and the light-emitting brightness in the area with high emergent brightness can be reduced by setting some light-absorbing dots in the area with high emergent brightness, so that the light-absorbing dots with proper density and size in the required area can improve the light-emitting uniformity of the backlight module. The method has good applicability and lower cost, and is favorable for market promotion.
The utility model discloses the fourth aspect of the embodiment provides a display device, and this display device includes above-mentioned arbitrary backlight unit and sets up the display panel in backlight unit light-emitting side. The display device can be a display device such as a liquid crystal panel, a liquid crystal display, a liquid crystal television and the like, and can also be a mobile terminal such as a mobile phone, a tablet personal computer, a mobile photo album and the like. Because the principle of the display device for solving the problems is similar to that of the backlight module, the implementation of the display device can be referred to that of the display panel, and repeated details are not repeated.
The embodiment of the utility model provides a light emitting diode, lamp plate, backlight unit and display device, include: the lens is positioned on the light emitting side of the light emitting chip; one side of the lens facing the light-emitting chip is provided with an accommodating cavity, and the light-emitting chip is positioned in the accommodating cavity; the lens is used for adjusting the light field distribution of the emergent light of the light-emitting chip; light absorption dots are arranged in a set area of the light emergent surface of the lens; the light absorbing dots are used for absorbing light rays which enter and exit the light emitting core and reach the light absorbing dots. The light absorbing dots are arranged in the set area of the light emitting surface of the lens of the light emitting diode, and the light emitting brightness of the area can be reduced by arranging some light absorbing dots in the area with higher emergent brightness by utilizing the light absorbing property of the light absorbing dots, so that the light emitting uniformity can be improved by arranging the light absorbing dots with proper density and size in the required area. The method has good applicability and lower cost, and is favorable for market promotion.
While the preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (12)
1. A light emitting diode, comprising: the lens is positioned on the light emitting side of the light emitting chip; wherein, one side of the lens facing the light-emitting chip is provided with an accommodating cavity, and the light-emitting chip is positioned in the accommodating cavity; the lens is used for adjusting the light field distribution of emergent light of the light-emitting chip;
light absorption dots are arranged in a set area of the light emergent surface of the lens; the light absorption dots are used for absorbing light rays emitted to and coming from the light-emitting core.
2. The light-emitting diode according to claim 1, wherein the light-absorbing dots are circular or polygonal in shape.
3. The light-emitting diode of claim 2, wherein the width of the light-absorbing dots is at least 0.1 mm.
4. The light-emitting diode according to claim 1, wherein the light-absorbing dots are made of black ink.
5. The light-emitting diode of claim 1, wherein the lens is a refractive lens comprising: a light incident surface and a light emitting surface; the emergent light of the light-emitting chip is incident to the light incident surface, and the light incident surface refracts the light to the light emergent surface and emits the light from the light emergent surface.
6. The light-emitting diode of claim 1, wherein the lens is a reflective lens, the reflective lens comprising: the light incident surface, the total reflection surface and the light emergent surface; emergent light of the light-emitting chip is incident to the light incident surface, the light incident surface refracts light to the total reflection surface, and the total reflection surface reflects the light to the light emergent surface and emits the light from the light emergent surface.
7. A light panel comprising a plurality of light emitting diodes as claimed in any one of claims 1 to 6.
8. The light panel of claim 7, wherein the lens of the light emitting diode is a refractive lens;
the light-emitting diode positioned at the edge area of the lamp panel is provided with light-absorbing dots at the bottom area of the light-emitting surface of the lens close to the light-emitting chip;
the light emitting diodes located in the middle area of the lamp panel are located on the light emitting surface of the lens far away from the top area of the light emitting chip, and light absorption dots are arranged on the top area of the lens.
9. The light panel of claim 7, wherein the lens of the light emitting diode is a reflective lens;
and light absorption dots are arranged in the area, close to the bottom of the light emitting diode, of the light emitting surface of the lens.
10. The lamp panel of claim 8 or 9, wherein the light-absorbing dots located in different areas of the light-emitting surface of the lens have different distribution densities and sizes.
11. A backlight module, comprising: a back panel and the lamp panel of any one of claims 7-10 disposed on the back panel.
12. A display device comprising the backlight module as claimed in claim 11 and a display panel located at the light exit side of the backlight module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921081572.1U CN210294751U (en) | 2019-07-11 | 2019-07-11 | Light emitting diode, lamp panel, backlight module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921081572.1U CN210294751U (en) | 2019-07-11 | 2019-07-11 | Light emitting diode, lamp panel, backlight module and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210294751U true CN210294751U (en) | 2020-04-10 |
Family
ID=70101809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921081572.1U Active CN210294751U (en) | 2019-07-11 | 2019-07-11 | Light emitting diode, lamp panel, backlight module and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210294751U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112799251A (en) * | 2020-12-28 | 2021-05-14 | 深圳市隆利科技股份有限公司 | Direct type light emitting device |
| CN114089561A (en) * | 2020-08-24 | 2022-02-25 | 海信视像科技股份有限公司 | Display device |
| CN114220900A (en) * | 2021-11-16 | 2022-03-22 | 深圳市佑明光电有限公司 | LED packaging structure and method, lighting device and display backlight device |
| WO2023097758A1 (en) * | 2021-12-02 | 2023-06-08 | 惠州华星光电显示有限公司 | Backlight module and display device |
| US11703716B2 (en) | 2020-04-28 | 2023-07-18 | Hisense Visual Technology Co., Ltd. | Display apparatus |
| US11796859B2 (en) | 2020-03-25 | 2023-10-24 | Hisense Visual Technology Co., Ltd. | Display apparatus with micro light emitting diode light board |
| US11822183B2 (en) | 2020-03-25 | 2023-11-21 | Hisense Visual Technology Co., Ltd. | Display apparatus |
-
2019
- 2019-07-11 CN CN201921081572.1U patent/CN210294751U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11796859B2 (en) | 2020-03-25 | 2023-10-24 | Hisense Visual Technology Co., Ltd. | Display apparatus with micro light emitting diode light board |
| US11822183B2 (en) | 2020-03-25 | 2023-11-21 | Hisense Visual Technology Co., Ltd. | Display apparatus |
| US11703716B2 (en) | 2020-04-28 | 2023-07-18 | Hisense Visual Technology Co., Ltd. | Display apparatus |
| CN114089561A (en) * | 2020-08-24 | 2022-02-25 | 海信视像科技股份有限公司 | Display device |
| CN112799251A (en) * | 2020-12-28 | 2021-05-14 | 深圳市隆利科技股份有限公司 | Direct type light emitting device |
| CN114220900A (en) * | 2021-11-16 | 2022-03-22 | 深圳市佑明光电有限公司 | LED packaging structure and method, lighting device and display backlight device |
| WO2023097758A1 (en) * | 2021-12-02 | 2023-06-08 | 惠州华星光电显示有限公司 | Backlight module and display device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210294751U (en) | Light emitting diode, lamp panel, backlight module and display device | |
| KR20130061796A (en) | Optical assembly, backlight unit having the same, and display apparatus thereof | |
| CN105572783A (en) | Light guide plate, and backlight unit and display device including the same | |
| CN101939695A (en) | Method for manufacturing LCD device and light guide panel | |
| CN104678468A (en) | Reflective sheet and method of manufacturing the same | |
| US20140104885A1 (en) | Light guide plate, backlight module and display device | |
| CN214704248U (en) | Display device | |
| CN107991810B (en) | Backlight and liquid crystal display | |
| EP3916476B1 (en) | Direct-type backlight source and manufacturing method therefor, and display device | |
| CN113885254B (en) | Backlight module and display device | |
| US20080043173A1 (en) | Backlight module having optical sheet with optical diffusion dots and liquid crystal display using same | |
| US20200301202A1 (en) | Backlight module and display device | |
| CN103765618A (en) | Light emitting device and display device | |
| CN107861293A (en) | Liquid crystal display and backlight module thereof | |
| CN103851421A (en) | Blacklight unit, liquid crystal display device having the same and fabrication method thereof | |
| WO2021190414A1 (en) | Display device | |
| CN109164638B (en) | Light emitting module, manufacturing method thereof and direct type backlight source | |
| CN105629567A (en) | Light source module and light source unit | |
| KR20220044431A (en) | Dimming film, backlight module and display device | |
| CN203363863U (en) | Straight down type backlight module and display device | |
| US11320574B2 (en) | Light guide plate, backlight module and display device | |
| CN115407551B (en) | Display device | |
| KR20120030908A (en) | Structure of backlight plate | |
| KR101530773B1 (en) | Optical sheet and back light unit having the same | |
| US10782469B2 (en) | Light guide plate and its fabricating method, as well as backlight module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 266555 Qingdao economic and Technological Development Zone, Shandong, Hong Kong Road, No. 218 Patentee after: Hisense Visual Technology Co., Ltd. Address before: 266555 Qingdao economic and Technological Development Zone, Shandong, Hong Kong Road, No. 218 Patentee before: QINGDAO HISENSE ELECTRONICS Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |