WO2021223228A1 - 一种用于8k智能数字电视的背光模组 - Google Patents

一种用于8k智能数字电视的背光模组 Download PDF

Info

Publication number
WO2021223228A1
WO2021223228A1 PCT/CN2020/089231 CN2020089231W WO2021223228A1 WO 2021223228 A1 WO2021223228 A1 WO 2021223228A1 CN 2020089231 W CN2020089231 W CN 2020089231W WO 2021223228 A1 WO2021223228 A1 WO 2021223228A1
Authority
WO
WIPO (PCT)
Prior art keywords
led
light
white
color
red
Prior art date
Application number
PCT/CN2020/089231
Other languages
English (en)
French (fr)
Inventor
黄国桂
吴文弘
康许坤
Original Assignee
赣州市牧士电子有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 赣州市牧士电子有限公司 filed Critical 赣州市牧士电子有限公司
Priority to PCT/CN2020/089231 priority Critical patent/WO2021223228A1/zh
Priority to CN202010739222.0A priority patent/CN111796457A/zh
Publication of WO2021223228A1 publication Critical patent/WO2021223228A1/zh

Links

Images

Classifications

    • 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
    • G02F1/133603—Direct backlight with LEDs
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0055—Reflecting element, sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
    • G02B6/0073—Light emitting diode [LED]
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0085—Means for removing heat created by the light source from the package
    • 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
    • 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
    • G02F1/133609—Direct backlight including means for improving the color mixing, e.g. white
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3406—Control of illumination source
    • G09G3/342—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines

Definitions

  • the invention relates to the field of backlight modules, and in particular to a backlight module for 8K smart digital televisions.
  • smart TV has an open TV application store, which provides a wealth of application software, allowing users to download and create their own personalized TV freely. Achieve free watching videos (playing videos through the Internet) and a more free way of watching movies (traditional TV programs broadcast channels and time are fixed, while smart TVs can use selected broadcast, fast forward, playback, etc. in the live broadcast software Operate and find the content you like to watch. After downloading the on-demand software, you can also search for movies by yourself according to your movie-watching preferences), interact with other devices and other advantages.
  • HDR High Dynamic Range
  • High brightness makes the picture displayed by the display device more detailed level of brightness.
  • global dimming technology is selected to realize dynamic control.
  • the display picture is generally not the highlight of the entire display picture, but a short-term, small-area super-high brightness.
  • the backlight design generally considers the partitioning of the entire light source solution, that is, the local dynamic backlight (Local Dimming) technology.
  • the combination of high brightness and high color gamut can display more perfect colors, because the high color gamut display technology has the characteristics of a large number of colors, high color saturation, and more vivid colors and beautiful picture quality than ordinary color gamut TVs.
  • the technical problem to be solved by the present invention is to propose a backlight module for 8K smart digital TVs, which can display the high-brightness screen color delicately and better display the 8K image quality.
  • the present invention adopts the following technical solutions:
  • the invention provides a backlight module for 8K smart digital TV, which includes several four-color light source groups arranged side by side, and each of the four-color light source groups includes red LED, green LED, blue LED, and white LED
  • each of the four-color light source groups includes red LED, green LED, blue LED, and white LED
  • the red LED, the green LED, and the blue LED are arranged around the white LED, and the white LED can emit light alone or simultaneously with any one of the red LED, green LED, and blue LED.
  • the four-color light source group is provided with a first light board and a second light board, and the first light board and the second light board are laminated and fixed together; the red LED, green LED The LED and the blue LED are electrically connected to the first light board, the white LED is electrically connected to the second light board, and the red LED, green LED, blue LED, and white LED emit light in all directions. Towards the same side.
  • the preferred technical solution of the present invention is that a through hole is provided on the first light board, and the white LED is located in the through hole.
  • the four-color light source group is further provided with a lens, and the red LED, the green LED, the blue LED, and the white LED are all located under the lens.
  • the lens is convex toward the light source emission direction, and the lens is provided with a second lens with a larger refractive index in the middle of the lower part, and the second lens is located above the white LED.
  • the preferred technical solution of the present invention is that a thermally conductive sheet is arranged between the first light board and the second light board, and the thermally conductive sheet is located between the gaps of the white LEDs.
  • the preferred technical solution of the present invention lies in that several of the four-color light source component areas in the connected area are independently controlled to realize the backlight area control.
  • the preferred technical solution of the present invention is that it further includes a light guide plate, a reflector, a heat sink, and a light bar provided with several four-color light source groups, the light guide plate is located directly in front of the light bar, and the reflector is located On one side of the light guide plate, the heat dissipation plate is fixedly connected with the heat conducting sheet of the light bar.
  • the invention provides a backlight module for 8K smart digital TV, which includes several four-color light source groups arranged side by side, and each of the four-color light source groups includes red LED, green LED, blue LED, and white LED
  • the red LED, the green LED, and the blue LED are arranged around the white LED, and the white LED can emit light alone or simultaneously with any one of the red LED, green LED, and blue LED.
  • the white LED can be used to fill the area to increase the brightness of the area.
  • the red LED, green LED, and blue LED can be used to fill the light to make the color display more vivid, so that the highlight still has a higher brightness. Good color display.
  • FIG. 1 is a schematic diagram of the overall structure of a backlight module provided in a specific embodiment of the present invention
  • FIG. 2 is a schematic diagram of the structure of a four-color light source group provided in a specific embodiment of the present invention.
  • Fig. 3 is a detailed structural diagram of a four-color light source group provided in a specific embodiment of the present invention.
  • Light guide plate 2. Four-color light source group; 3. Heat sink; 4. Reflective sheet; 6. Lens; 7. Thermal conductive sheet; 8. Light bar; 21. The first light board; 22. The second light board; 211. Through hole; 51, white LED; 52, red LED; 53, green LED; 54, blue LED; 61, second lens.
  • the backlight module for 8K smart digital TV includes several four-color light source groups 2 arranged side by side, and each of the four-color light source groups 2 includes The red LED52, the green LED53, the blue LED54, and the white LED51, the red LED52, the green LED53, and the blue LED54 are arranged around the white LED51, and the white LED51 can emit light alone or in combination with the red LED52, the green LED53, Any one of the blue LED 54 emits light at the same time.
  • a number of the four-color light source groups 2 in the connected area are partitioned to independently control each partition to achieve backlight area control.
  • the four red LEDs 52 emit light individually.
  • one to four white LEDs 51 can be turned on at the same time for supplement light.
  • one red LED 52 can be turned off, so that the overall brightness and color of the area are both Suitable.
  • the red LED52, the green LED53, and the blue LED54 are arranged around the white LED51, so that the brightness of the area can be increased when the white LED51 is turned on, but at the same time, the color of the LED lights can be turned on so that part of the color can be obtained. Keep, so that while the brightness is improved, better color display can be retained, so that the screen display is more delicate.
  • the four-color light source group 2 is provided with a first light board 21 and a second light board 22, and the first light board 21 and the second light board 22 are laminated and fixed Together; the red LED52, green LED53, blue LED54 are electrically connected to the first light board 21, the white LED51 is electrically connected to the second light board 22, the red LED52, green The light emitting directions of LED53, blue LED54, and white LED51 all face the same side.
  • the red LED52, green LED53, and blue LED54 generally have only one light-emitting, which can be controlled as a group. They can be installed in the same layer of the circuit to facilitate connection with the control chip, reduce the use of the control chip, reduce power consumption, and facilitate control.
  • the white LED 51 needs to be controlled separately, and installing it in the same layer of the circuit with other color LEDs will complicate the circuit, and there will be insufficient wiring space.
  • the white LED 51 can be controlled independently, the control circuit is simple, and the control is convenient.
  • a through hole 211 is provided on the first light board 21, and the white LED 51 is located in the through hole 211.
  • the first light board 21 is provided with a through hole 211, and then the red LED52, green LED53, and blue LED54 are installed.
  • the white LED 51 is installed on the second light board 22 corresponding to the corresponding through hole 211, and then the first light
  • the board 21 and the second light board 22 are fixed to the rear, and can be detachably connected by screws, which is convenient for later maintenance.
  • the white LED 51 is installed in the through hole 211, and the lights of the other colors are arranged around so that they all emit light in the same direction.
  • This embodiment is different from the first embodiment in that a lens 6 is added above the LED.
  • the backlight module for 8K smart digital TV includes several four-color light source groups 2 arranged side by side, and each of the four-color light source groups 2 includes The red LED52, the green LED53, the blue LED54, and the white LED51, the red LED52, the green LED53, and the blue LED54 are arranged around the white LED51, and the white LED51 can emit light alone or in combination with the red LED52, the green LED53, Any one of the blue LED 54 emits light at the same time.
  • a number of the four-color light source groups 2 in the connected area are partitioned to independently control each partition to achieve backlight area control.
  • the four red LEDs 52 emit light individually.
  • one to four white LEDs 51 can be turned on at the same time for supplement light.
  • one red LED 52 can be turned off, so that the overall brightness and color of the area are both Suitable.
  • the red LED52, the green LED53, and the blue LED54 are arranged around the white LED51, so that the brightness of the area can be increased when the white LED51 is turned on, but at the same time, the color of the LED lights can be turned on so that part of the color can be obtained. Keep, so that while the brightness is improved, better color display can be retained, so that the screen display is more delicate.
  • the four-color light source group 2 is provided with a first light board 21 and a second light board 22, and the first light board 21 and the second light board 22 are laminated and fixed Together; the red LED52, green LED53, blue LED54 are electrically connected to the first light board 21, the white LED51 is electrically connected to the second light board 22, the red LED52, green The light emitting directions of LED53, blue LED54, and white LED51 all face the same side.
  • the red LED52, green LED53, and blue LED54 generally have only one light-emitting, which can be controlled as a group. They can be installed in the same layer of the circuit to facilitate connection with the control chip, reduce the use of the control chip, reduce power consumption, and facilitate control.
  • the white LED 51 needs to be controlled separately, and installing it in the same layer of the circuit with other color LEDs will complicate the circuit, and there will be insufficient wiring space.
  • the white LED 51 can be controlled independently, the control circuit is simple, and the control is convenient.
  • a through hole 211 is provided on the first light board 21, and the white LED 51 is located in the through hole 211.
  • the first light board 21 is provided with a through hole 211, and then the red LED52, green LED53, and blue LED54 are installed.
  • the white LED 51 is installed on the second light board 22 corresponding to the corresponding through hole 211, and then the first light
  • the board 21 and the second light board 22 are fixed to the rear, and can be detachably connected by screws, which is convenient for later maintenance.
  • the white LED 51 is installed in the through hole 211, and the lights of the other colors are arranged around so that they all emit light in the same direction.
  • the four-color light source group 2 is further provided with a lens 6, and the red LED 52, the green LED 53, the blue LED 54 and the white LED 51 are all located under the lens 6.
  • the light can be diverged better through the lens 6.
  • the more important role in the present invention is that when the white LED 51 and any one of the red LED 52, the green LED 53 and the blue LED 54 emit light at the same time, the two kinds of light can be better refracted and mixed through the function of the lens 6, because the two light emitting The light source is located at different positions under the lens 6, and its light-emitting angle will be different.
  • the light rays of the two light sources can be refracted and overlapped by the function of the lens 6, so that the finally emitted light source has better uniformity.
  • the lens 6 is convex toward the emission direction of the light source, and the lens 6 is provided with a second lens 61 with a larger refractive index in the middle of the lower part, and the second lens 61 is located above the white LED 51. Since the white LED 51 is placed under the through hole 211, the position of the light-emitting source is relatively low, resulting in a small emission angle of the white light. Through the action of the second lens 61, the white light source can be refracted and emitted once, and then mixed with light sources of other colors through the lens 6 to diverge, so that the light source has a larger and more uniform divergence angle.
  • This embodiment is different from the first embodiment in that a thermal conductive sheet 7 is provided between the first light board 21 and the second light board 22.
  • the backlight module for 8K smart digital TV includes several four-color light source groups 2 arranged side by side, and each of the four-color light source groups 2 includes The red LED52, the green LED53, the blue LED54, and the white LED51, the red LED52, the green LED53, and the blue LED54 are arranged around the white LED51, and the white LED51 can emit light alone or in combination with the red LED52, the green LED53, Any one of the blue LED 54 emits light at the same time.
  • a number of the four-color light source groups 2 in the connected area are partitioned to independently control each partition to achieve backlight area control.
  • the four red LEDs 52 emit light individually.
  • one to four white LEDs 51 can be turned on at the same time for supplement light.
  • one red LED 52 can be turned off, so that the overall brightness and color of the area are both Suitable.
  • the red LED52, the green LED53, and the blue LED54 are arranged around the white LED51, so that the brightness of the area can be increased when the white LED51 is turned on, but at the same time, the color of the LED lights can be turned on so that part of the color can be obtained. Keep, so that while the brightness is improved, better color display can be retained, so that the screen display is more delicate.
  • the four-color light source group 2 is provided with a first light board 21 and a second light board 22, and the first light board 21 and the second light board 22 are laminated and fixed Together; the red LED52, green LED53, blue LED54 are electrically connected to the first light board 21, the white LED51 is electrically connected to the second light board 22, the red LED52, green The light emitting directions of LED53, blue LED54, and white LED51 all face the same side.
  • the red LED52, green LED53, and blue LED54 generally have only one light-emitting, which can be controlled as a group. They can be installed in the same layer of the circuit to facilitate connection with the control chip, reduce the use of the control chip, reduce power consumption, and facilitate control.
  • the white LED 51 needs to be controlled separately, and installing it in the same layer of the circuit with other color LEDs will complicate the circuit, and there will be insufficient wiring space.
  • the white LED 51 can be controlled independently, the control circuit is simple, and the control is convenient.
  • a through hole 211 is provided on the first light board 21, and the white LED 51 is located in the through hole 211.
  • the first light board 21 is provided with a through hole 211, and then the red LED52, green LED53, and blue LED54 are installed.
  • the white LED 51 is installed on the second light board 22 corresponding to the corresponding through hole 211, and then the first light
  • the board 21 and the second light board 22 are fixed to the rear, and can be detachably connected by screws, which is convenient for later maintenance.
  • the white LED 51 is installed in the through hole 211, and the lights of the other colors are arranged around so that they all emit light in the same direction.
  • the four-color light source group 2 is further provided with a lens 6, and the red LED 52, the green LED 53, the blue LED 54 and the white LED 51 are all located under the lens 6.
  • the light can be diverged better through the lens 6.
  • the more important role in the present invention is that when the white LED 51 and any one of the red LED 52, the green LED 53 and the blue LED 54 emit light at the same time, the two kinds of light can be better refracted and mixed through the function of the lens 6, because the two light emitting The light source is located at different positions under the lens 6, and its light-emitting angle will be different.
  • the light rays of the two light sources can be refracted and overlapped by the function of the lens 6, so that the finally emitted light source has better uniformity.
  • the lens 6 is convex toward the emission direction of the light source, and the lens 6 is provided with a second lens 61 with a larger refractive index in the middle of the lower part, and the second lens 61 is located above the white LED 51. Since the white LED 51 is placed under the through hole 211, the position of the light-emitting source is relatively low, resulting in a small emission angle of the white light. Through the action of the second lens 61, the white light source can be refracted and emitted once, and then mixed with light sources of other colors through the lens 6 to diverge, so that the light source has a larger and more uniform divergence angle.
  • the light guide plate 1 is located directly in front of the light bar 8, and the reflective sheet 4 is located On one side of the light guide plate 1, the heat dissipation plate 3 is fixedly connected to the heat conducting sheet 7 of the light bar 8.
  • a thermally conductive sheet 7 is arranged between the first light board 21 and the second light board 22, and the thermally conductive sheet 7 is located between the gaps of the white LEDs 51. Using multiple LEDs to emit light will increase the heat generation of the light bar 8.
  • the first light board 21 and the second light board 22 are laminated together, which will affect the heat dissipation effect.
  • the heat conducting sheet 7 By adding a heat conducting sheet 7 between the first light board 21 and the second light board 22, the The heat is well dissipated, and then the heat dissipation plate 3 is connected to dissipate the heat, so that the light bar 8 generates lower heat.

Abstract

一种用于8K智能数字电视的背光模组，包括并排设置若干个的四色光源组（2），每个四色光源组（2）均包括红色LED（52）、绿色LED（53）、蓝色LED（54）、白色LED（51），红色LED（52）、绿色LED（53）、蓝色LED（54）环绕设置于白色LED（51）周围，白色LED（51）可单独发光或与红色LED（52）、绿色LED（53）、蓝色LED（54）中的任一个同时发光。通过白色LED（51）可以对区域补光，使得区域亮度提高，同时通过红色LED（52）、绿色LED（53）、蓝色LED（54）任一个颜色的补光，使得色彩显示更加鲜艳，从而使得高亮处仍具有较好的色彩显示。

Description

一种用于8K智能数字电视的背光模组 技术领域
本发明涉及背光模组领域，尤其涉及一种用于8K智能数字电视的背光模组。
背景技术
智能电视的显著特征就是拥有开放的电视应用程序商店，提供丰富的应用软件，让用户自由下载打造属于自己的个性化电视。做到免费看视频(通过网络来播放视频)，更自由的观影方式(传统电视的节目播出频道、时间是固定的，而智能电视可以在直播软件中利用选播、快进、回放等操作，找到自己喜欢观看的内容。在下载了点播软件之后，还可以根据自己的观影喜好，自行搜索影片)，与其它设备互动等优势。目前，在液晶显示技术领域，HDR(High Dynamic Range)高动态范围技术开始越来越多被使用，高亮度和高色域技术成为了显示行业研究的热点。高亮度使得显示设备所显示的画面更加具有亮度细节层次，一般选择全局控光技术(Global Dimming)实现动态控制。对于高亮度的画面，如玻璃在阳光下的反光，夜空中的烟花等，在显示画面中一般都不是整个显示画面的高亮，而是短时间、小面积的超高亮度。为了实现这种效果，背光设计时一般会考虑对整个光源方案进行分区涉及，即局部动态背光(Local Dimming)技术。高亮度与高色域的结合才能显示更完美的色彩，因为高色域显示技术具有色彩数量广、色彩饱和度高、颜色较普通色域的电视更加生动、画质靓丽的特点。
如果高亮的画面出现在色域不高的显示设备上时，会出现画面颜色发白、色彩失真、细节颜色不清楚的现象。
发明内容
为了克服现有技术的缺陷，本发明所要解决的技术问题在于提出一种用于8K智能数字电视的背光模组，高亮画面色彩显示细腻，更好的展示8K的画质感。
为达此目的，本发明采用以下技术方案：
本发明提供的一种用于8K智能数字电视的背光模组，包括并排设置若干个的四色光源组，每个所述四色光源组均包括红色LED、绿色LED、蓝色LED、白色LED，所述红色LED、绿色LED、蓝色LED环绕设置于所述白色LED周围，所述白色LED可单独发光或与所述红色LED、绿色LED、蓝色LED中的任一个同时发光。
本发明优选地技术方案在于，所述四色光源组设置有第一灯板和第二灯板，所述第一灯板与所述第二灯板层叠固定在一起；所述红色LED、绿色LED、蓝色LED均电连接设置在所述第一灯板上，所述白色LED电连接在所述第二灯板上，所述红色LED、绿色LED、蓝色LED、白色LED发光方向都朝同一侧。
本发明优选地技术方案在于，所述第一灯板上设置有通孔，所述白色LED位于所述通孔中。
本发明优选地技术方案在于，所述四色光源组还设置有透镜，所述红色LED、绿色LED、蓝色LED、白色LED均位于所述透镜下方。
本发明优选地技术方案在于，所述透镜往光源发射方向凸起，所述透镜在下方中部设置有折射率更大的第二透镜，所述第二透镜位于所述白色LED上方。
本发明优选地技术方案在于，所述第一灯板和第二灯板之间设置有导热片，所述导热片位于所述白色LED的间隙之间。
本发明优选地技术方案在于，对相连区域的若干个所述四色光源组分区，以对各分区进行独立控制实现背光区域控制。
本发明优选地技术方案在于，还包括导光板、反射片、散热板以及设置有若干所述四色光源组的灯条，所述导光板位于所述灯条的正前方，所述反射片位于所述导光板的一侧，所述散热板与所述灯条的导热片固定连接。
本发明的有益效果为：
本发明提供的一种用于8K智能数字电视的背光模组，包括并排设置若干个的四色光源组，每个所述四色光源组均包括红色LED、绿色LED、蓝色LED、白色LED，所述红色LED、绿色LED、蓝色LED环绕设置于所述白色LED周围，所述白色LED可单独发光或与所述红色LED、绿色LED、蓝色LED中的任一个同时发光。通过白色LED可以对该区域补光，使得该区域亮度提高，同时通过红色LED、绿色LED、蓝色LED任一个颜色的补光，使得该处色彩显示更加鲜艳，从而使得高亮处仍具有较好的色彩显示。
附图说明
图1是本发明具体实施方式中提供的背光模组整体结构示意图；
图2是本发明具体实施方式中提供的四色光源组结构的示意图；
图3是本发明具体实施方式中提供的四色光源组详细结构示意图；
图中：
1、导光板；2、四色光源组；3、散热板；4、反射片；6、透镜；7、导热片；8、灯条；21、第一灯板；22、第二灯板；211、通孔；51、白色LED；52、红色LED；53、绿色LED；54、蓝色LED；61、第二透镜。
具体实施方式
下面结合附图并通过具体实施方式来进一步说明本发明的技术方案。
实施例一
如图1-3所示，本实施例中提供的一种用于8K智能数字电视的背光模组，包括并排设置若干个的四色光源组2，每个所述四色光源组2均包括红色LED52、绿色LED53、蓝色LED54、白色LED51，所述红色LED52、绿色LED53、蓝色LED54环绕设置于所述白色LED51周围，所述白色LED51可单独发光或与所述红色LED52、绿色LED53、蓝色LED54中的任一个同时发光。对相连区域的若干个所述四色光源组2分区，以对各分区进行独立控制实现背光区域控制。以相邻四个四色光源为一组进行控制为例，在该区域接收到红光控制信号时，四个红色LED52单独发光。在同时接收到需要较高亮度的控制信号时，可以同时开启一到四个白色LED51进行补光，根据亮度和色域的要求，可以关闭一个红色LED52，从而使得该区域整体的亮度和色彩都合适。红色LED52、绿色LED53、蓝色LED54环绕设置于所述白色LED51周围，使得在白色LED51开启时可以增加该区域的亮度，但是同时开启带有色彩的LED灯使得该部分的色彩还可以得到部分的保留，从而使得在亮度得到提高的同时还可以保留较好的色彩显示，从而使得画面显示更加细腻。
为了方便四色光源组2的安装和控制，所述四色光源组2设置有第一灯板21和第二灯板22，所述第一灯板21与所述第二灯板22层叠固定在一起；所述 红色LED52、绿色LED53、蓝色LED54均电连接设置在所述第一灯板21上，所述白色LED51电连接在所述第二灯板22上，所述红色LED52、绿色LED53、蓝色LED54、白色LED51发光方向都朝同一侧。红色LED52、绿色LED53、蓝色LED54一般只有一个发光，可以作为一组进行控制，将其都安装在同一层的电路中可以方便与控制芯片连接，减少控制芯片的使用量，降低功耗、方便控制。而白色LED51需要单独控制，将其与其他颜色的LED安装在同一层电路中会使得电路复杂化，且布线空间不足。通过第一灯板21与第二灯板22的设置可以使得白色LED51独立控制，控制线路简单，控制方便。
优选的，所述第一灯板21上设置有通孔211，所述白色LED51位于所述通孔211中。第一灯板21上先开设通孔211，然后完成红色LED52、绿色LED53、蓝色LED54的安装，在第二灯板22上对应相应的通孔211位置安装好白色LED51，然后将第一灯板21和第二灯板22对其后固定在一起，可通过螺钉可拆卸式连接，方便后期维修。将白色LED51安装在通孔211中，其余颜色的灯环绕排布，使得其都超同一方向发光。
实施例二
本实施例区别于实施例一在于：在LED上方加设有透镜6。
如图1-3所示，本实施例中提供的一种用于8K智能数字电视的背光模组，包括并排设置若干个的四色光源组2，每个所述四色光源组2均包括红色LED52、绿色LED53、蓝色LED54、白色LED51，所述红色LED52、绿色LED53、蓝色LED54环绕设置于所述白色LED51周围，所述白色LED51可单独发光或与所述红色LED52、绿色LED53、蓝色LED54中的任一个同时发光。对相连区域的若干个所述四色光源组2分区，以对各分区进行独立控制实现背光区域控 制。以相邻四个四色光源为一组进行控制为例，在该区域接收到红光控制信号时，四个红色LED52单独发光。在同时接收到需要较高亮度的控制信号时，可以同时开启一到四个白色LED51进行补光，根据亮度和色域的要求，可以关闭一个红色LED52，从而使得该区域整体的亮度和色彩都合适。红色LED52、绿色LED53、蓝色LED54环绕设置于所述白色LED51周围，使得在白色LED51开启时可以增加该区域的亮度，但是同时开启带有色彩的LED灯使得该部分的色彩还可以得到部分的保留，从而使得在亮度得到提高的同时还可以保留较好的色彩显示，从而使得画面显示更加细腻。
为了方便四色光源组2的安装和控制，所述四色光源组2设置有第一灯板21和第二灯板22，所述第一灯板21与所述第二灯板22层叠固定在一起；所述红色LED52、绿色LED53、蓝色LED54均电连接设置在所述第一灯板21上，所述白色LED51电连接在所述第二灯板22上，所述红色LED52、绿色LED53、蓝色LED54、白色LED51发光方向都朝同一侧。红色LED52、绿色LED53、蓝色LED54一般只有一个发光，可以作为一组进行控制，将其都安装在同一层的电路中可以方便与控制芯片连接，减少控制芯片的使用量，降低功耗、方便控制。而白色LED51需要单独控制，将其与其他颜色的LED安装在同一层电路中会使得电路复杂化，且布线空间不足。通过第一灯板21与第二灯板22的设置可以使得白色LED51独立控制，控制线路简单，控制方便。
优选的，所述第一灯板21上设置有通孔211，所述白色LED51位于所述通孔211中。第一灯板21上先开设通孔211，然后完成红色LED52、绿色LED53、蓝色LED54的安装，在第二灯板22上对应相应的通孔211位置安装好白色LED51，然后将第一灯板21和第二灯板22对其后固定在一起，可通过螺钉可 拆卸式连接，方便后期维修。将白色LED51安装在通孔211中，其余颜色的灯环绕排布，使得其都超同一方向发光。
优选的，所述四色光源组2还设置有透镜6，所述红色LED52、绿色LED53、蓝色LED54、白色LED51均位于所述透镜6下方。通过透镜6可以将光更好的发散。在本发明中更重要的作用是，在白色LED51与红色LED52、绿色LED53、蓝色LED54其中任意一个同时发光时，通过透镜6的作用可以更好的将两种光折射混合，由于两个发光源位于透镜6下方的不同位置，其发光角度会存在差异。通过透镜6的作用可以将两个光源的光线折射后重合，从而使得最终发射出来的光源均一性较好。进一步地，所述透镜6往光源发射方向凸起，所述透镜6在下方中部设置有折射率更大的第二透镜61，所述第二透镜61位于所述白色LED51上方。由于白色LED51放置于通孔211下方，使得该发光源的位置较低，从而导致白色光发射角度较小。通过第二透镜61的作用可以将白色光源先进行一次折射发射，然后再通过透镜6与其他颜色的光源混合后发散，从而使得光源发散角度较大且较为均匀。
实施例三
本实施例区别于实施例一在于：第一灯板21与第二灯板22之间设置有导热片7。
如图1-3所示，本实施例中提供的一种用于8K智能数字电视的背光模组，包括并排设置若干个的四色光源组2，每个所述四色光源组2均包括红色LED52、绿色LED53、蓝色LED54、白色LED51，所述红色LED52、绿色LED53、蓝色LED54环绕设置于所述白色LED51周围，所述白色LED51可单独发光或与所述红色LED52、绿色LED53、蓝色LED54中的任一个同时发光。对相连区 域的若干个所述四色光源组2分区，以对各分区进行独立控制实现背光区域控制。以相邻四个四色光源为一组进行控制为例，在该区域接收到红光控制信号时，四个红色LED52单独发光。在同时接收到需要较高亮度的控制信号时，可以同时开启一到四个白色LED51进行补光，根据亮度和色域的要求，可以关闭一个红色LED52，从而使得该区域整体的亮度和色彩都合适。红色LED52、绿色LED53、蓝色LED54环绕设置于所述白色LED51周围，使得在白色LED51开启时可以增加该区域的亮度，但是同时开启带有色彩的LED灯使得该部分的色彩还可以得到部分的保留，从而使得在亮度得到提高的同时还可以保留较好的色彩显示，从而使得画面显示更加细腻。
为了方便四色光源组2的安装和控制，所述四色光源组2设置有第一灯板21和第二灯板22，所述第一灯板21与所述第二灯板22层叠固定在一起；所述红色LED52、绿色LED53、蓝色LED54均电连接设置在所述第一灯板21上，所述白色LED51电连接在所述第二灯板22上，所述红色LED52、绿色LED53、蓝色LED54、白色LED51发光方向都朝同一侧。红色LED52、绿色LED53、蓝色LED54一般只有一个发光，可以作为一组进行控制，将其都安装在同一层的电路中可以方便与控制芯片连接，减少控制芯片的使用量，降低功耗、方便控制。而白色LED51需要单独控制，将其与其他颜色的LED安装在同一层电路中会使得电路复杂化，且布线空间不足。通过第一灯板21与第二灯板22的设置可以使得白色LED51独立控制，控制线路简单，控制方便。
优选的，所述第一灯板21上设置有通孔211，所述白色LED51位于所述通孔211中。第一灯板21上先开设通孔211，然后完成红色LED52、绿色LED53、蓝色LED54的安装，在第二灯板22上对应相应的通孔211位置安装好白色 LED51，然后将第一灯板21和第二灯板22对其后固定在一起，可通过螺钉可拆卸式连接，方便后期维修。将白色LED51安装在通孔211中，其余颜色的灯环绕排布，使得其都超同一方向发光。
优选的，所述四色光源组2还设置有透镜6，所述红色LED52、绿色LED53、蓝色LED54、白色LED51均位于所述透镜6下方。通过透镜6可以将光更好的发散。在本发明中更重要的作用是，在白色LED51与红色LED52、绿色LED53、蓝色LED54其中任意一个同时发光时，通过透镜6的作用可以更好的将两种光折射混合，由于两个发光源位于透镜6下方的不同位置，其发光角度会存在差异。通过透镜6的作用可以将两个光源的光线折射后重合，从而使得最终发射出来的光源均一性较好。进一步地，所述透镜6往光源发射方向凸起，所述透镜6在下方中部设置有折射率更大的第二透镜61，所述第二透镜61位于所述白色LED51上方。由于白色LED51放置于通孔211下方，使得该发光源的位置较低，从而导致白色光发射角度较小。通过第二透镜61的作用可以将白色光源先进行一次折射发射，然后再通过透镜6与其他颜色的光源混合后发散，从而使得光源发散角度较大且较为均匀。
还包括导光板1、反射片4、散热板3以及设置有若干所述四色光源组2的灯条8，所述导光板1位于所述灯条8的正前方，所述反射片4位于所述导光板1的一侧，所述散热板3与所述灯条8的导热片7固定连接。所述第一灯板21和第二灯板22之间设置有导热片7，所述导热片7位于所述白色LED51的间隙之间。采用多个LED发光会导致灯条8发热增加。本实施例中第一灯板21与第二灯板22层叠在一起，对散热效果会有所影响，通过在第一灯板21与第二 灯板22之间加设导热片7，可以将热量很好的导出，然后连接散热板3将热量散发出去，使得灯条8发热较低。
本发明是通过优选实施例进行描述的，本领域技术人员知悉，在不脱离本发明的精神和范围的情况下，可以对这些特征和实施例进行各种改变或等效替换。本发明不受此处所公开的具体实施例的限制，其他落入本申请的权利要求内的实施例都属于本发明保护的范围。

Claims (8)

  1. 一种用于8K智能数字电视的背光模组，其特征在于：
    包括并排设置若干个的四色光源组(2)，每个所述四色光源组(2)均包括红色LED(52)、绿色LED(53)、蓝色LED(54)、白色LED(51)，所述红色LED(52)、绿色LED(53)、蓝色LED(54)环绕设置于所述白色LED(51)周围，所述白色LED(51)可单独发光或与所述红色LED(52)、绿色LED(53)、蓝色LED(54)中的任一个同时发光。
  2. 根据权利要求1所述的用于8K智能数字电视的背光模组，其特征在于：
    所述四色光源组(2)设置有第一灯板(21)和第二灯板(22)，所述第一灯板(21)与所述第二灯板(22)层叠固定在一起；
    所述红色LED(52)、绿色LED(53)、蓝色LED(54)均电连接设置在所述第一灯板(21)上，所述白色LED(51)电连接在所述第二灯板(22)上，所述红色LED(52)、绿色LED(53)、蓝色LED(54)、白色LED(51)发光方向都朝同一侧。
  3. 根据权利要求2所述的用于8K智能数字电视的背光模组，其特征在于：
    所述第一灯板(21)上设置有通孔(211)，所述白色LED(51)位于所述通孔(211)中。
  4. 根据权利要求1-3任一项所述的用于8K智能数字电视的背光模组，其特征在于：
    所述四色光源组(2)还设置有透镜(6)，所述红色LED(52)、绿色LED(53)、蓝色LED(54)、白色LED(51)均位于所述透镜(6)下方。
  5. 根据权利要求4所述的8K智能数字电视的背光模组，其特征在于：
    所述透镜(6)往光源发射方向凸起，所述透镜(6)在下方中部设置有折射率更大的第二透镜(61)(6)，所述第二透镜(61)(6)位于所述白色LED(51)上方。
  6. 根据权利要求2所述的8K智能数字电视的背光模组，其特征在于：
    所述第一灯板(21)和第二灯板(22)之间设置有导热片(7)，所述导热片(7)位于所述白色LED(51)的间隙之间。
  7. 根据权利要求1所述的8K智能数字电视的背光模组，其特征在于：
    对相连区域的若干个所述四色光源组(2)分区，以对各分区进行独立控制实现背光区域控制。
  8. 根据权利要求6所述的8K智能数字电视的背光模组，其特征在于：
    还包括导光板(1)、反射片(4)、散热板(3)以及设置有若干所述四色光源组(2)的灯条(8)，所述导光板(1)位于所述灯条(8)的正前方，所述反射片(4)位于所述导光板(1)的一侧，所述散热板(3)与所述灯条(8)的导热片(7)固定连接。
PCT/CN2020/089231 2020-05-08 2020-05-08 一种用于8k智能数字电视的背光模组 WO2021223228A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2020/089231 WO2021223228A1 (zh) 2020-05-08 2020-05-08 一种用于8k智能数字电视的背光模组
CN202010739222.0A CN111796457A (zh) 2020-05-08 2020-07-28 一种用于8k智能数字电视的背光模组

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2020/089231 WO2021223228A1 (zh) 2020-05-08 2020-05-08 一种用于8k智能数字电视的背光模组

Publications (1)

Publication Number Publication Date
WO2021223228A1 true WO2021223228A1 (zh) 2021-11-11

Family

ID=72827900

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/089231 WO2021223228A1 (zh) 2020-05-08 2020-05-08 一种用于8k智能数字电视的背光模组

Country Status (2)

Country Link
CN (1) CN111796457A (zh)
WO (1) WO2021223228A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116149099A (zh) * 2023-04-20 2023-05-23 惠科股份有限公司 背光模组及显示装置

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1963289A (zh) * 2005-11-11 2007-05-16 株式会社日立显示器 照明装置以及使用该照明装置的液晶显示装置
CN101211064A (zh) * 2006-12-29 2008-07-02 Lg.菲利浦Lcd株式会社 发光模块、平光单元和包括发光模块的液晶显示器
CN101235944A (zh) * 2008-02-29 2008-08-06 上海广电光电子有限公司 Led背光源及其显示控制方法
CN101338878A (zh) * 2008-07-30 2009-01-07 合肥工业大学 色温可调的高亮度led背光模块
CN101551549A (zh) * 2008-04-03 2009-10-07 北京京东方光电科技有限公司 发光二极管背光源
CN101849133A (zh) * 2007-09-20 2010-09-29 三美电机株式会社 背光装置以及使用该背光装置的液晶显示装置
JP5104793B2 (ja) * 2009-03-25 2012-12-19 株式会社デンソー Ｌｅｄ光源ユニット
CN207624353U (zh) * 2017-10-23 2018-07-17 江苏毅昌科技有限公司 直下式显示器led背光模组
CN208041638U (zh) * 2018-04-13 2018-11-02 调调（北京）科技有限公司 综合多种灯光效果的照明系统

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1963289A (zh) * 2005-11-11 2007-05-16 株式会社日立显示器 照明装置以及使用该照明装置的液晶显示装置
CN101211064A (zh) * 2006-12-29 2008-07-02 Lg.菲利浦Lcd株式会社 发光模块、平光单元和包括发光模块的液晶显示器
CN101849133A (zh) * 2007-09-20 2010-09-29 三美电机株式会社 背光装置以及使用该背光装置的液晶显示装置
CN101235944A (zh) * 2008-02-29 2008-08-06 上海广电光电子有限公司 Led背光源及其显示控制方法
CN101551549A (zh) * 2008-04-03 2009-10-07 北京京东方光电科技有限公司 发光二极管背光源
CN101338878A (zh) * 2008-07-30 2009-01-07 合肥工业大学 色温可调的高亮度led背光模块
JP5104793B2 (ja) * 2009-03-25 2012-12-19 株式会社デンソー Ｌｅｄ光源ユニット
CN207624353U (zh) * 2017-10-23 2018-07-17 江苏毅昌科技有限公司 直下式显示器led背光模组
CN208041638U (zh) * 2018-04-13 2018-11-02 调调（北京）科技有限公司 综合多种灯光效果的照明系统

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116149099A (zh) * 2023-04-20 2023-05-23 惠科股份有限公司 背光模组及显示装置
CN116149099B (zh) * 2023-04-20 2023-08-08 惠科股份有限公司 背光模组及显示装置

Also Published As

Publication number Publication date
CN111796457A (zh) 2020-10-20

Similar Documents

Publication Publication Date Title
US11635550B2 (en) Lighting device
JP5175211B2 (ja) 周囲照明を与える層状光ガイド
US20110194047A1 (en) Display device, method of controlling a light emitting diode array of the display device, and computer program product
US20070133212A1 (en) Illuminating device
CN102297369A (zh) 背光模块及使用其的显示装置
JP2009503561A (ja) カラーディスプレイのバックライティング用発光ダイオードの独立制御
JP2009520334A5 (zh)
CN111103723A (zh) 一种液晶显示背光模组
US11676548B2 (en) Light source unit, backlight module and display device
KR20140071275A (ko) Led 투영 램프
WO2021223228A1 (zh) 一种用于8k智能数字电视的背光模组
US10191360B2 (en) Microarray LED flash
WO2011124117A1 (zh) 立体显示装置
CN111352272A (zh) 一种液晶显示背光模组及显示屏
KR100518642B1 (ko) 액정표시장치용 백라이트
CN211531373U (zh) 一种照明及显示灯具
US20120182496A1 (en) Lighting device, display device, and television receiver
JP2006284906A (ja) バックライト装置及び液晶表示装置
JP2006228575A (ja) 発光ダイオード素子、バックライト装置及び液晶表示装置
WO2012026162A1 (ja) 照明装置、表示装置、及びテレビ受信装置
CN112987394B (zh) 一种显示装置
US20170277001A1 (en) Backlight module and display device
CN110837191A (zh) 一种液晶显示背光模组
RU2455671C2 (ru) Проекционное устройство отображения видеоинформации на составном просветном экране
CN110837192A (zh) 一种液晶显示背光模组

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20934833

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20934833

Country of ref document: EP

Kind code of ref document: A1