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Backlight module and display device

A technology for display devices and backlight modules, which is applied in optics, nonlinear optics, instruments, etc., can solve the problems of poor color gamut, high power consumption, uneven light mixing, etc., to improve light utilization and color gamut, Reduce power consumption and eliminate the effect of uneven light mixing

Active Publication Date: 2022-06-03
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the embodiments of the present invention is to provide a backlight module and a display device to solve the problems of uneven light mixing, low light utilization rate, large power consumption and poor color gamut existing in existing color mixing schemes.

Method used

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  • Backlight module and display device
  • Backlight module and display device
  • Backlight module and display device

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0050] FIG. 1 is a schematic structural diagram of a first embodiment of a display device of the present invention, illustrating a situation where M=3. As shown in Figure 1, this

[0051] FIG. 2 is a schematic structural diagram of the light modulation layer according to the first embodiment of the present invention. As shown in FIG. 2, the light modulation layer of this embodiment

[0061] FIG. 6 is a schematic diagram of the operation of the display device according to the first embodiment of the present invention. As shown in FIG. 6, the display panel includes a matrix

[0072] FIG. 7 is an overall schematic diagram of a display device according to a first embodiment of the present invention. As shown in Figure 7, the overall structure of the display device

[0074] In this embodiment, the light-emitting unit can use Mini LED, and can also use LED. The first monochromatic light is red light, the second

[0076] The display device provided by the embodiment of the present in...

no. 2 example

[0079] FIG. 8 is a schematic structural diagram of a light modulation layer according to a second embodiment of the present invention. This embodiment is the same as the aforementioned first embodiment

no. 3 example

[0084] FIG. 9 is a schematic structural diagram of a backlight module according to an embodiment of the present invention, illustrating a situation where M=3. As shown in Figure 9, this implementation

[0089] Wherein, the light-emitting unit can adopt Mini LED, the first monochromatic light is red light, the second monochromatic light is green light, and the third monochromatic light is green light.

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Abstract

Embodiments of the invention provide a backlight module and a display device. The display device includes a display panel and a backlight module. The display panel includes a plurality of pixel units arranged in a matrix, and each pixel unit includes M sub-pixels that are periodically arranged and transmit different monochromatic lights respectively. The backlight module includes stacked A light-emitting layer and a light modulation layer, the light-emitting layer includes a plurality of light source units arranged in a matrix, each light source unit includes M light-emitting units that are periodically arranged to emit different monochromatic lights, and the light-modulation layer is used to emit light from each light-emitting unit The monochromatic light is modulated into N light beams with different exit angles, and the N light beams are respectively directed to the N sub-pixels, and the color of the light emitted by the light-emitting unit is the same as the color of the light transmitted by the N sub-pixels. The invention does not need to mix monochromatic light by setting a light modulation layer in the backlight module, eliminates the problem of uneven light mixing, improves light utilization rate and color gamut, and reduces power consumption at the same time.

Description

Backlight Modules and Display Devices technical field [0001] The present invention relates to the field of display technology, in particular to a backlight module and a display device. Background technique [0002] With the development of light-emitting diode (Light Emitting Diode, LED) chip fabrication and packaging technology, sub-millimeter Mini Light Emitting Diode (Mini LED) and Micro Light Emitting Diode (Micro Light Emitting Diode, Micro LED) has gradually gained a place in the display field. with grain size less than 50 μm Compared with Micro LED, the grain size of Mini LED is about 100 microns to 200 microns, which is easier to achieve mass production. With higher yield, it is currently widely used in lighting and backlight modules in displays. [0003] In a liquid crystal display device (Liquid Crystal Display, LCD), Mini LED is used as a backlight source. Only less structures such as light guide plates and reflective sheets are needed, which is conducive ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/13357
Inventor 钟维石海军张伟王铮万海燕
Owner BOE TECH GRP CO LTD