Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Backlight module, display device and LED light source group switching method thereof

A technology of LED light source and backlight module, which is applied in the direction of light guide, optics, optical components, etc., can solve the problem of inability to switch freely between the high color gamut display state and the conventional color gamut display state, and achieve high-quality visual enjoyment, The effect of improving functions and market competitiveness and reducing power consumption

Inactive Publication Date: 2018-12-18
WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
View PDF4 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a backlight module, a display device and a method for switching LED light source groups thereof, which can solve the technical problem in the prior art that free switching between the high color gamut display state and the conventional color gamut display state cannot be performed

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Backlight module, display device and LED light source group switching method thereof
  • Backlight module, display device and LED light source group switching method thereof
  • Backlight module, display device and LED light source group switching method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] figure 1 Shown is a schematic structural diagram of a display device provided by an embodiment of the present invention, refer to figure 1 , the display device includes a backlight module and a display module, wherein the backlight module includes a light guide plate 101 and a light bar substrate 102, and the light guide plate 101 includes a light incident side 110 and a light exit side 110'. The backlight module also includes an optical film set and a reflection sheet, and an optical film set 103 is provided on the light emitting side 110' of the light guide plate 101, and the optical film set 103 includes a diffusion plate or a prism sheet, etc. It can guide light, gather light and adjust the angle of light divergence. At the same time, a reflective sheet 104 is provided on the side of the light guide plate 101 away from the light-emitting side 110 ′. The display device may be a liquid crystal panel display device or other types of panel display devices.

[0033] T...

Embodiment 2

[0047] Such as Figure 5 Shown is a schematic structural diagram of a backlight module provided by another embodiment of the present invention. In addition to the method of disposing the quantum dot layer 213 on the surface of the light incident side 210 of the light guide plate 201 described in the first embodiment above, the quantum dot layer 213 can also be disposed on the first LED light source group 214 The way to solve the technical problem that it is impossible to switch freely between the high color gamut display state and the regular color gamut display state is to solve the problem on the blue LED in the display.

[0048] refer to Figure 5 , the backlight module at least includes a light guide plate 201, and a light bar substrate 202 disposed on the light incident side 210 of the light guide plate 201, and the light bar substrate 202 includes a first LED light source group 214 and a second LED light source group 215 , the first LED light source group 214 is connec...

Embodiment 3

[0052] Another embodiment of the present invention is a method for switching LED light source groups of a backlight module of a display device. The method for switching light source groups includes the following steps:

[0053] S10: The backlight module with the driving circuit, the first LED light source group and the second LED light source group detects the needs of the picture to be displayed by the current display module, and is in a high color gamut display state or a normal color gamut display state, wherein the first LED The light source group is used to display high color gamut images, and the second LED light source group is used to display normal color gamut images. If it is detected that the current display module needs to display a high color gamut display, proceed to the steps S20, if it is detected that the requirement of the screen to be displayed by the current display module is a normal color gamut display state, proceed to step S30;

[0054] S20: The driving...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to the technical field of display, and in particular relates to a backlight device, a display device and an LED light source group switching method thereof. The backlight moduleat least comprises a light guide plate, a light bar base plate and multiple quantum dot layers, wherein the light bar base plate is arranged on the light entering side of the light guide plate, the light bar base plate comprises a first LED light source group and a second LED light source group which are selectively lighted corresponding to different color range display states, the quantum dot layers are arranged on the light entering side of the light guide plate, when the first LED light source group is lighted, light rays emitted by the first LED light source group can enter the light guideplate after dropping into the quantum dot layers, and when the second LED light source group is lighted, light rays emitted by the second LED light source group directly enter the light guide plate without passing through the quantum dot layers; and therefore, a user can freely switch between a high color range display state and a conventional color range display state according to different needs, and the function and market competitiveness of the product can be enhanced.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a backlight module, a display device and a method for switching LED light source groups thereof. Background technique [0002] With the development of display technology and more and more applications, users have higher requirements for display effects. Therefore, it is necessary to increase the color gamut value of the display. At present, the display effect is usually achieved by exciting quantum dots and mixing them into white light. High color gamut, in order to meet the application requirements of high color gamut display. [0003] However, the higher the color gamut, the lower the brightness of the display device will be. In order to keep the brightness unchanged when performing high color gamut display, the power consumption of the backlight module needs to be increased. If the high color gamut display is maintained, the backlight will be greatly increased. The power con...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13357G02F1/133
CPCG02F1/13306G02F1/133615G02F2202/36G02B6/0023G02B6/0068G02F1/133614G02B6/0043G02F1/133603G02F1/133605G02F1/133613
Inventor 肖士元
Owner WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com