CN111308781A - Direct type backlight module and display equipment - Google Patents
Direct type backlight module and display equipment Download PDFInfo
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- CN111308781A CN111308781A CN202010189299.5A CN202010189299A CN111308781A CN 111308781 A CN111308781 A CN 111308781A CN 202010189299 A CN202010189299 A CN 202010189299A CN 111308781 A CN111308781 A CN 111308781A
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133605—Direct backlight including specially adapted reflectors
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133611—Direct backlight including means for improving the brightness uniformity
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
- G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
Abstract
The invention discloses a direct type backlight module. The direct type backlight module comprises an optical film group, an internal reflection frame and a mini-LED lamp panel which are arranged from top to bottom. The lower surface of the internal reflection frame is provided with a light transmission structure, so that light emitted by the mini-LED lamp panel is incident into the internal reflection frame through the light transmission structure. The upper surface of the inner part of the internal reflection frame is provided with a first reflection structure, and the first reflection structure corresponds to the mini-LED chip. The lower surface of the inner part of the internal reflection frame is provided with second reflection structures, and the second reflection structures and the first reflection structures are arranged in a staggered mode, so that visible light can be uniformly emitted to the light emitting side of the direct type backlight module after being reflected for multiple times by the first reflection structures and the second reflection structures. The invention can realize flexible backlight, improve the uniform light emission of the flexible surface light source and improve the utilization efficiency of light.
Description
Technical Field
The present disclosure relates to display devices, and particularly to a direct-type backlight module and a display apparatus.
Background
With the rapid development of display technology, people have increasingly high demands on displays, and particularly, demands on non-planar display devices such as flexible liquid crystal displays, curved liquid crystal displays, flexible liquid crystal displays, and foldable liquid crystal displays have increased. The flexible liquid crystal display panel is about to become the mainstream of the display field by virtue of its characteristics of lightness, thinness, bendability and impact resistance. However, the liquid crystal display device is a non-self-luminous display device, and the display can be realized only by matching with backlight, thereby greatly increasing the difficulty of flexible display. How to implement a flexible backlight has been an unsolved problem.
The direct type backlight module is directly arranged behind the liquid crystal display panel, has the advantage of a narrow frame, is widely applied to the field of large-size display, and faces the problem of thickness increase. A Mini light emitting diode (Mini-LED) is a small LED having a size of about 100 μm, and when the Mini-LED is applied to a backlight unit, it is possible to reduce the increase in thickness of a liquid crystal display device while realizing a narrow bezel. Similar to the conventional side-in backlight module, the vertical backlight module using Mini-LEDs also needs to use a brightness enhancement film, a reflector plate, etc. to improve the front brightness. The basic principle of the most commonly used brightness enhancement film is that part of the light with large angle can be converged to the central region, and the rest of the light can re-enter the light guide plate through total reflection and be recycled. Different from a light return system of a light guide plate with side-in backlight, a direct-down backlight module adopting a Mini-LED generally returns light by coating white reflective ink (namely white oil) on a driving substrate, and the reflected light and incident light generally have the same angle due to the reflection characteristic of the white oil, or enter a brightness enhancement film again after being reflected and are totally reflected again, or are reflected to a low reflection area (such as the surface of the Mini-LED and a spacer area between the Mini-LED and the white oil) of the driving substrate to be lost, so that the overall light return efficiency is greatly lost, and the light emitting efficiency is not high. The flexible Mini-LED backlight technology is difficult to implement, is disjointed from the traditional backlight technology on the one hand, and has high manufacturing cost and low yield on the other hand.
Disclosure of Invention
The invention mainly solves the technical problem of providing a direct type backlight module which can realize flexible backlight, improve the uniform light emission of a flexible surface light source and improve the utilization efficiency of light.
In order to solve the technical problems, the invention adopts a technical scheme that the direct type backlight module comprises an optical diaphragm group, an internal reflection frame and a mini-LED lamp panel which are arranged from top to bottom. The lower surface of the internal reflection frame is provided with a light-transmitting structure, so that the light emitted by the mini-LED lamp panel is incident into the internal reflection frame through the light-transmitting structure. And a first reflection structure is arranged on the upper surface of the inner part of the inner reflection frame, and corresponds to the mini-LED chip. The lower surface of the inner part of the internal reflection frame is provided with second reflection structures, and the second reflection structures and the first reflection structures are arranged in a staggered mode, so that visible light can be uniformly emitted to the light emitting side of the direct type backlight module after being reflected for multiple times by the first reflection structures and the second reflection structures.
According to the invention, through the arrangement of the internal reflection frame, the reflection optical path is increased, the light-equalizing effect is adjustable, the Mura lamp eye phenomenon is eliminated, and the light-emitting uniformity and the light energy utilization efficiency of the surface light source are improved. Although the light emitted from each LED light source has a high concentration degree, the diffusion angle can be enlarged by the reflection to the first reflection structure and the second reflection structure of the internal reflection frame, so that the problem of uneven brightness (mura) is solved, and uniform light emission from the surface light source is realized. The invention can obtain the high HDR contrast value display picture of the terminal equipment at the same time. In addition, whole straight following formula backlight unit realizes the modularization equipment, disposable laminating, and simple process to the mini orMicro LED of patterning, laminating efficient and structural stability is high, and test and maintenance replacement are simple and convenient, do benefit to and promote the yield.
In a preferred embodiment, the mini-LED lamp panel comprises a flexible polyimide film, a mini-LED chip and a fluorescent layer encapsulating the mini-LED chip.
In a preferred embodiment, the direct type backlight module further comprises an FPC driving board; the mini-LED lamp panel further comprises a dielectric layer, the dielectric layer is arranged below the mini-LED chip, and the FPC driving board is electrically connected with the mini-LED chip through the dielectric layer. The dielectric layer is made of Cu, Ni, Cr, Ti, Al, Ag, Au and other conductive metal materials. And the dielectric layer material and the bonding pad of the mini-LED form ohmic contact to realize electrical connection.
The flexible polyimide film can also be replaced by other flexible polymer materials, such as Polyester (PET), or memory metal. The internal reflection frame includes at least one of a glossy white reflective material, a diffuse reflective material, a specular reflective white reflective material (Al, Ag, Al/Ag/Al), and a polymer film of colloidal refractive index.
In a preferred embodiment, the internal reflection frame is a hollow structure to increase the optical path of the reflected light.
In a preferred embodiment, the inner surface of the inner reflection frame includes diffusion particles including at least one particle of SiO2, TiO2, Au, Ag, Al, Cu, Zn, Pt, Co, Ni, Cu2O, CuO, CdO, ZnO, glass fiber.
In a preferred embodiment, the light-transmitting structure is an opening, or a transparent material, or a low refractive index material.
In a preferred embodiment, the upper surface of the internal reflection frame is further provided with an open pore structure; or the upper surface of the internal reflection frame is also provided with a transparent structure; or the upper surface of the internal reflection frame is also provided with a low-refractive-index structure. The internal reflection frame is of an integrally formed structure or a split structure which can be spliced up and down.
In a preferred embodiment, the first reflective structure and/or the second reflective structure is a protrusion, which is a hemispherical structure, a tetrahedral structure, a polyhedral structure, a cylindrical structure, or a nearly conical structure.
In a preferred embodiment, the optical film set includes a prism sheet, and a diffusion film under the prism sheet.
According to the embodiment of the invention, the direct type backlight module of the invention is integrated with the LCD panel and the flexible cover plate into a display device, which can be applied to a flexible LCD display.
Drawings
The invention and its advantages will be better understood by studying the following detailed description of specific embodiments, given by way of non-limiting example, and illustrated in the accompanying drawings, in which:
fig. 1 is an exploded view of a direct type backlight module according to embodiment 1 of the present invention.
Fig. 2 is a cross-sectional view of a mini-LED lamp panel and an internal reflection frame of a direct type backlight module in embodiment 1 of the present invention, which shows a corresponding relationship between a first reflection structure and a second reflection structure in embodiment 1.
Fig. 3 is a cross-sectional view of a mini-LED lamp panel and an internal reflection frame of a direct type backlight module according to embodiment 1 of the present invention, which illustrates a general optical principle of embodiment 1.
Fig. 4 is a partial cross-sectional view of a mini-LED lamp panel of the direct type backlight module according to embodiment 3 of the present invention.
Detailed Description
Referring to the drawings, wherein like reference numbers refer to like elements throughout, the principles of the present invention are illustrated in an appropriate environment. The following description is based on illustrated embodiments of the invention and should not be taken as limiting the invention with regard to other embodiments that are not detailed herein.
The word "embodiment" is used herein to mean serving as an example, instance, or illustration. In addition, the articles "a" and "an" as used in this specification and the appended claims may generally be construed to mean "one or more" unless specified otherwise or clear from context to be directed to a singular form.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Further, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise direct contact of the first and second features through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.
Example 1
First, a direct type backlight module according to embodiment 1 of the present invention will be described with reference to fig. 1 to 3. The invention adopts a technical scheme that the direct type backlight module comprises an optical diaphragm group 101, an internal reflection frame 102, a mini-LED lamp panel 103 and an FPC (flexible printed circuit) driver board 104 which are arranged from top to bottom. The lower surface of the internal reflection frame 102 is provided with a light transmission structure 1021, so that the light emitted from the mini-LED lamp panel 103 enters the internal reflection frame 102 through the light transmission structure 1021. The inner reflective frame 102 has a first reflective structure 1022 disposed on an upper surface thereof, and the first reflective structure 1022 corresponds to the mini-LED chip 1032. The second reflective structures 1023 are disposed on the lower surface of the inner reflective frame 102, and the second reflective structures 1023 and the first reflective structures 1022 are arranged in a staggered manner, so that visible light is reflected by the first reflective structures 1022 and the second reflective structures 1023 for multiple times and then is uniformly emitted to the light-emitting side of the direct-type backlight module. The upper surface of the internal reflection frame 102 is further provided with an open pore structure 1024. The inner reflection frame 102 is an integrally formed structure.
According to the invention, through the arrangement of the internal reflection frame 102, the reflection optical path is increased, the light-equalizing effect is adjustable, the Mura lamp eye phenomenon is eliminated, and the light-emitting uniformity and the light energy utilization efficiency of the surface light source are improved. Although the light emitted from each LED light source has a high concentration degree, the diffusion angle can be enlarged by the reflection of the first reflection structure 1022 and the second reflection structure 1023 of the inner reflection frame 102, thereby overcoming the problem of uneven brightness (Mura) and realizing uniform light emission from the surface light source. The invention can obtain the high HDR contrast value display picture of the terminal equipment at the same time. In addition, whole straight following formula backlight unit realizes the modularization equipment, once only laminates, and simple process to the mini or Micro LED of patterning, laminates efficiently and structural stability is high, and test and maintenance replacement are simple and convenient, do benefit to and promote the yield.
The mini-LED lamp panel 103 includes a flexible polyimide film 1031, a mini-LED chip 1032, and a phosphor layer 1033 encapsulating the mini-LED chip.
The mini-LED lamp panel further comprises a dielectric layer 1034, the dielectric layer 1034 is arranged below the mini-LED chip 1032, and the FPC driver board 104 is electrically connected with the mini-LED chip 1032 through the dielectric layer 1034. The dielectric layer is made of Cu conductive metal material. The dielectric layer material 1034 forms an ohmic contact with the pad of the mini-LED1032 to make an electrical connection.
Alternatively, the flexible polyimide film may be replaced with other flexible polymer materials, such as Polyester (PET), or memory metal.
The internal reflection frame 102 includes a polymer film having a colloidal refractive index.
The inner surface of the internal reflection frame 102 includes diffusion particles including SiO2 microparticles.
The light-transmitting structure 1021 is an opening. Alternatively, the light-transmitting structure 1021 is made of a transparent material or a low refractive index material.
The upper surface of the inner reflective frame 102 is provided with an opening 1024, which may be a transparent structure instead. Or the upper surface of the internal reflection frame 102 is also provided with a low refractive index structure.
The first and second reflective structures 1022 and 1023 are hexahedral protrusions. Alternatively, it may be a hemispherical structure, a tetrahedral structure, a polyhedral structure, a cylindrical structure, or a nearly conical structure.
The optical film group 101 includes a prism sheet and a diffusion film under the prism sheet.
Example 2
Only the differences between embodiment 2 and embodiment 1 will be described below, and the descriptions of the similarities will be omitted.
The internal reflection frame 102 is a split structure which can be spliced up and down.
Example 3
Fig. 4 is a partial cross-sectional view of a mini-LED lamp panel of a direct type backlight device according to embodiment 3 of the present invention. Only the differences between embodiment 3 and embodiment 1 will be described below, and the descriptions of the similarities will be omitted.
The mini-LED lamp panel 103 further includes a third reflective structure 1034 disposed on the side below the mini-LED chip 1032. The mini-LED chip 1032 and the fluorescent layer 1033 encapsulating the mini-LED chip are embedded in the internal reflection frame 102, the internal reflection frame 102 is a hollow structure, and the arrangement increases the distance between the first reflection structure 1022 and the second reflection structure 1023, further increases the optical path and efficiency of light mixing, and improves the uniformity of light output.
While the invention has been described above with reference to certain embodiments, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the various features of the various embodiments of the present disclosure may be used in any combination, provided that there is no structural conflict, and the combination is not exhaustively described in this specification for brevity and resource conservation. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (10)
1. A direct type backlight module is characterized by comprising:
the optical diaphragm group, the internal reflection frame and the mini-LED lamp panel are arranged from top to bottom;
the lower surface of the internal reflection frame is provided with a light-transmitting structure, so that the light emitted by the mini-LED lamp panel is incident into the internal reflection frame through the light-transmitting structure;
a first reflection structure is arranged on the upper surface of the inner part of the inner reflection frame, and corresponds to the mini-LED chip;
the lower surface of the inner part of the internal reflection frame is provided with second reflection structures, and the second reflection structures and the first reflection structures are arranged in a staggered mode, so that visible light can be uniformly emitted to the light emitting side of the direct type backlight module after being reflected for multiple times by the first reflection structures and the second reflection structures.
2. The direct type backlight module according to claim 1, wherein the mini-LED lamp panel comprises a flexible polyimide film, a mini-LED chip and a fluorescent layer encapsulating the mini-LED chip.
3. The direct type backlight module according to claim 1, further comprising an FPC driving board; the mini-LED lamp panel further comprises a dielectric layer, the dielectric layer is arranged below the mini-LED chip, and the FPC driving board is electrically connected with the mini-LED chip through the dielectric layer.
4. The direct-type backlight module as claimed in claim 3, wherein the inner reflective frame is hollow to increase the optical path of the reflected light.
5. The direct type backlight module according to claim 1, wherein the inner surface of the inner reflection frame comprises diffusion particles comprising at least one particle of SiO2, TiO2, Au, Ag, Al, Cu, Zn, Pt, Co, Ni, Cu2O, CuO, CdO, ZnO, and glass fiber.
6. The direct type backlight module according to claim 1, wherein the light transmissive structure is an opening, or a transparent material, or a low refractive index material.
7. The direct type backlight module as claimed in claim 1, wherein the upper surface of the inner reflection frame is further provided with an opening structure; or the upper surface of the internal reflection frame is also provided with a transparent structure; or the upper surface of the internal reflection frame is also provided with a low-refractive-index structure.
8. The direct-type backlight module according to claim 1, wherein the first and/or second reflective structures are protrusions having a hemispherical structure, a tetrahedral structure, a polyhedral structure, a cylindrical structure or a nearly conical structure.
9. The direct type backlight module according to claim 1, wherein the optical film set comprises a prism sheet, a diffusion film under the prism sheet.
10. A display device, comprising: a flexible LCD panel and a direct type backlight module according to any one of claims 1 to 9.
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| CN202010189299.5A CN111308781A (en) | 2020-03-18 | 2020-03-18 | Direct type backlight module and display equipment |
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| CN202010189299.5A CN111308781A (en) | 2020-03-18 | 2020-03-18 | Direct type backlight module and display equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111752045A (en) * | 2020-07-15 | 2020-10-09 | 武汉华星光电技术有限公司 | Backlight module and display device |
| WO2023231112A1 (en) * | 2022-06-02 | 2023-12-07 | 武汉华星光电技术有限公司 | Backlight module and mobile terminal |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100265694A1 (en) * | 2009-04-21 | 2010-10-21 | Kim Sungwoo | Light emitting device |
| US20120170253A1 (en) * | 2011-01-05 | 2012-07-05 | Sangtae Park | Display device |
| CN102650383A (en) * | 2011-02-24 | 2012-08-29 | 夏普株式会社 | Light source module and optical member |
| US20120224111A1 (en) * | 2011-03-01 | 2012-09-06 | Panasonic Liquid Crystal Display Co., Ltd. | Planar light source device, liquid crystal display device, and television set |
| CN102853332A (en) * | 2011-06-30 | 2013-01-02 | 日立民用电子株式会社 | Backlight device and liquid crystal display apparatus using the same |
| CN103939849A (en) * | 2013-01-23 | 2014-07-23 | Lg电子株式会社 | Apparatus for planar lighting |
| CN104344291A (en) * | 2014-09-11 | 2015-02-11 | 友达光电股份有限公司 | Backlight module |
| CN107644869A (en) * | 2016-07-20 | 2018-01-30 | 日亚化学工业株式会社 | Light-emitting device |
| CN108549178A (en) * | 2018-05-07 | 2018-09-18 | 深圳技术大学（筹） | LCD backlight module and display device |
| WO2019177090A1 (en) * | 2018-03-14 | 2019-09-19 | 大日本印刷株式会社 | Planar light source device, laminate used in planar light source device, and display apparatus |
| GB201912466D0 (en) * | 2018-09-17 | 2019-10-16 | Lg Display Co Ltd | Steroscopic reflection pattern, backlight unit display device |
| CN110431479A (en) * | 2017-03-23 | 2019-11-08 | 夏普株式会社 | The manufacturing method of backlight and backlight |
| GB201917838D0 (en) * | 2018-12-17 | 2020-01-22 | Lg Display Co Ltd | Backlight unit and display including the same |
| CN110970408A (en) * | 2018-09-28 | 2020-04-07 | 日亚化学工业株式会社 | Light emitting device |
| CN113272727A (en) * | 2018-11-12 | 2021-08-17 | 康宁公司 | Backlight including patterned reflector, diffusion plate, and method of manufacturing backlight |
-
2020
- 2020-03-18 CN CN202010189299.5A patent/CN111308781A/en active Pending
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100265694A1 (en) * | 2009-04-21 | 2010-10-21 | Kim Sungwoo | Light emitting device |
| US20120170253A1 (en) * | 2011-01-05 | 2012-07-05 | Sangtae Park | Display device |
| CN102650383A (en) * | 2011-02-24 | 2012-08-29 | 夏普株式会社 | Light source module and optical member |
| US20120224111A1 (en) * | 2011-03-01 | 2012-09-06 | Panasonic Liquid Crystal Display Co., Ltd. | Planar light source device, liquid crystal display device, and television set |
| CN102853332A (en) * | 2011-06-30 | 2013-01-02 | 日立民用电子株式会社 | Backlight device and liquid crystal display apparatus using the same |
| CN103939849A (en) * | 2013-01-23 | 2014-07-23 | Lg电子株式会社 | Apparatus for planar lighting |
| CN104344291A (en) * | 2014-09-11 | 2015-02-11 | 友达光电股份有限公司 | Backlight module |
| CN107644869A (en) * | 2016-07-20 | 2018-01-30 | 日亚化学工业株式会社 | Light-emitting device |
| CN110431479A (en) * | 2017-03-23 | 2019-11-08 | 夏普株式会社 | The manufacturing method of backlight and backlight |
| WO2019177090A1 (en) * | 2018-03-14 | 2019-09-19 | 大日本印刷株式会社 | Planar light source device, laminate used in planar light source device, and display apparatus |
| CN108549178A (en) * | 2018-05-07 | 2018-09-18 | 深圳技术大学（筹） | LCD backlight module and display device |
| GB201912466D0 (en) * | 2018-09-17 | 2019-10-16 | Lg Display Co Ltd | Steroscopic reflection pattern, backlight unit display device |
| CN110970408A (en) * | 2018-09-28 | 2020-04-07 | 日亚化学工业株式会社 | Light emitting device |
| CN113272727A (en) * | 2018-11-12 | 2021-08-17 | 康宁公司 | Backlight including patterned reflector, diffusion plate, and method of manufacturing backlight |
| GB201917838D0 (en) * | 2018-12-17 | 2020-01-22 | Lg Display Co Ltd | Backlight unit and display including the same |
| CN111323965A (en) * | 2018-12-17 | 2020-06-23 | 乐金显示有限公司 | Backlight unit and display device including the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111752045A (en) * | 2020-07-15 | 2020-10-09 | 武汉华星光电技术有限公司 | Backlight module and display device |
| WO2023231112A1 (en) * | 2022-06-02 | 2023-12-07 | 武汉华星光电技术有限公司 | Backlight module and mobile terminal |
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