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Backlight module and display device

A backlight module and backlight technology, applied in optics, nonlinear optics, instruments, etc., can solve the problems that hinder the development of foldable liquid crystal displays, and cannot realize the free folding of backlight modules, so as to improve product competitiveness and achieve freedom. folded effect

Active Publication Date: 2021-07-20
WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the existing liquid crystal display screen, when the backlight module is bent inwardly, light interference occurs between the optical elements in the bending area, so that the free folding of the backlight module cannot be realized, which hinders the folding The development of liquid crystal display

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

Embodiment 1

[0034] figure 1 It is a schematic diagram of the film layer structure of the backlight module before folding provided in the first embodiment of the present application, figure 2 Schematic diagram of the folded film layer structure of the backlight module provided in the first embodiment of the present application; figure 1 and figure 2 It can be seen that the backlight module 10 provided in the first embodiment of the present application includes a bending area 11 and non-bending areas 12 located on both sides of the bending area 11; wherein, the backlight module 10 includes a flexible circuit board 21, Multiple groups of backlight sources 22 arranged in an array on the circuit board 21, diffusion sheets 23 arranged above the plurality of groups of backlight sources 22, quantum dot composite boards 24 arranged above the diffusion sheets 23, and arranged on the The second optical adjustment layer 25 on the quantum dot composite plate 24 .

[0035] In this embodiment, the ...

Embodiment 2

[0040] image 3 A schematic diagram of the film layer structure of the backlight module before folding provided in the second embodiment of the present application. to combine image 3 It can be seen that the backlight module 10 provided in the second embodiment of the present application includes a bending area 11 and non-bending areas 12 located on both sides of the bending area 11; wherein, the backlight module 10 includes a flexible circuit board 21, Multiple groups of backlight sources 22 arranged in an array on the circuit board 21, diffusion sheets 23 arranged above the plurality of groups of backlight sources 22, quantum dot composite boards 24 arranged above the diffusion sheets 23, and arranged on the The second optical adjustment layer 25 on the quantum dot composite plate 24 .

[0041] In this embodiment, the quantum dot composite plate 24 includes a blue filter layer 241 near the diffuser 23, a quantum dot layer 242 disposed on the blue filter layer 241, and a q...

Embodiment 3

[0047] Figure 4 A schematic diagram of the film layer structure of the backlight module before folding provided in the third embodiment of the present application. to combine Figure 4 It can be seen that the backlight module 10 provided by the third embodiment of the present application further includes a bending transition area 13 located between the bending area 11 and the non-bending area 12 .

[0048] In the embodiment of the present application, the backlight module 10 includes a flexible circuit board 21, multiple sets of backlight sources 22 arrayed on the flexible circuit board 21, and a diffusion sheet arranged above the multiple sets of backlight sources 22. 23. The quantum dot composite plate 24 disposed above the diffusion sheet 23 and the second optical adjustment layer 25 disposed on the quantum dot composite plate 24 .

[0049] In this embodiment, the quantum dot composite plate 24 includes a blue filter layer 241 near the diffuser 23, a quantum dot layer 24...

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PUM

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Abstract

The embodiment of the invention provides a backlight module and a display device. The backlight module comprises a bending area and non-bending areas located on the two sides of the bending area. The backlight module comprises a backlight source and a first optical adjusting layer, the first optical adjusting layer is arranged on the backlight source, the first optical adjusting layer comprises a plurality of optical adjusting units, and the optical adjusting units are used for adjusting emergent light of the backlight source; the distribution density of the optical adjusting units arranged in the bending area is smaller than that of the optical adjusting units arranged in the non-bending area. According to the embodiment of the invention, THE plurality of optical adjusting units are arranged on the backlight source in the backlight module, and the distribution density of the optical adjusting units arranged in the bending area is smaller than that of the optical adjusting units arranged in the non-bending area, so that the brightness uniformity of the backlight module is ensured; free folding of the backlight module is achieved, and the product competitiveness of the display device in the foldable field is further improved.

Description

technical field [0001] The present application relates to the field of display technology, in particular to a backlight module and a display device. Background technique [0002] With the rise of full-screen technology, the pursuit of wider screens and wider viewing angles has become the trend of smart screens. The foldable screen is a further upgrade of the full screen form. When closed, the foldable screen returns to the size of a regular screen, and when the screen is opened, it is equivalent to the size of a tablet computer. It is compatible with office and entertainment, and has multiple functions. It is easy to carry and use. are very convenient. [0003] The current liquid crystal display (Liquid Crystal Display, LCD) device abandons the traditional glass substrate in the manufacturing process, and adopts a flexible substrate and is equipped with a flexible packaging technology to realize the foldable design of the liquid crystal display panel. However, in the exist...

Claims

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Application Information

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IPC IPC(8): G02F1/13357
CPCG02F1/133602G02F1/133606G02F1/133603
Inventor 刘广坤刘凡成
Owner WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD