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A light collimation structure, substrate, backlight module and display device

A grating structure and light source substrate technology, applied in optics, condenser mirrors, optical components, etc., can solve the problems of large divergence angle of light, reduce light energy utilization rate, increase power consumption of display panel, etc., to improve light extraction efficiency and improve collimation degree of effect

Active Publication Date: 2019-12-27
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large divergence angle of the light emitted by the backlight module in the display panel, the human eye can only receive a small part of the light energy, which greatly reduces the utilization rate of light energy, thereby increasing the power consumption of the display panel

Method used

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  • A light collimation structure, substrate, backlight module and display device
  • A light collimation structure, substrate, backlight module and display device
  • A light collimation structure, substrate, backlight module and display device

Examples

Experimental program
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Effect test

Embodiment 1

[0040] This embodiment provides a light collimation structure 20, such as figure 2 shown, including:

[0041] A lens 21 having a first focal point 211 and a first principal axis 212, the lens 21 is used to transmit the light from the first focal point 211 and then collimate it into parallel light parallel to the first principal axis 212;

[0042] The grating structure 22 is arranged between the first focal point 211 and the clear aperture of the lens (specifically, figure 2outside the area formed by the connecting line between terminal A and terminal B), and in the direction of the first principal axis 212, between the lens and the first focal point 211 (that is, between the dotted line A1 and the dotted line A2 area), the grating structure 22 includes a transmission grating 221, and the transmission grating 221 is used to transmit the light from the first focal point 211 and collimate it into parallel light parallel to the first main axis 212 .

[0043] For example, the ...

Embodiment 2

[0053] This embodiment provides a light collimation substrate, such as image 3 As shown, it includes a plurality of the above-mentioned light collimating structures 20, the distance between the lenses of each light collimating structure is greater than zero, and the first axis of the lens of each light collimating structure is parallel to and perpendicular to the first axis In the direction of , the transmission grating 221 is located between two adjacent lenses. In this embodiment, the light collimation structure only includes a transmission grating, does not include a reflection grating, and the transmission grating is located on the right side of the lens. Optionally, the width of the transmission grating is equal to the distance between two adjacent lenses. Of course, the width of the transmission grating can also be smaller than the distance between two adjacent lenses.

[0054] In addition, the light collimating substrate also includes a light collimating structure 31...

Embodiment 3

[0058] This embodiment provides a light collimating substrate. The difference from the second embodiment is that the light collimating structure in this embodiment further includes a reflective grating.

[0059] Such as Figure 4 As shown, the light collimating substrate provided in this embodiment includes a plurality of light collimating structures 20, the distance between the lenses of each light collimating structure is greater than zero, and the first axes of the lenses of each light collimating structure are parallel, and In a direction perpendicular to the first main axis, the transmission grating 221 is located between two adjacent lenses. In this embodiment, the transmission grating is located on the right side of the lens. Optionally, the width of the transmission grating is equal to the distance between two adjacent lenses. Of course, the width of the transmission grating can also be smaller than the distance between two adjacent lenses.

[0060] Generally, for t...

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Abstract

The present disclosure provides a light beam collimation structure, a substrate, a backlight module, and a display apparatus. The light beam collimation structure comprises: a lens (21) having a first primary axis (212) and a first focus (211), the lens is used for transmitting and collimating light from the first focus into parallel light in parallel with the first primary axis; a grating structure (22) disposed outside of a region formed by the first focus and a clear aperture of the lens and in a direction of the first primary axis, located between the lens and the first focus, the grating structure including a transmissive grating (221) for transmitting and collimating light from the first focus into parallel light in parallel with the first primary axis.

Description

technical field [0001] The invention relates to display technology, in particular to a light collimating structure, a substrate, a backlight module and a display device. Background technique [0002] In recent years, with the rapid development of various display devices, their power consumption has received extensive attention. Due to the large divergence angle of light emitted by the backlight module in the display panel, human eyes can only receive a small part of light energy, which greatly reduces the utilization rate of light energy, thereby increasing the power consumption of the display panel. To reduce the divergence angle of the emitted light from the display panel so that the emitted light can be efficiently received by the human eye requires a backlight module capable of collimating the light. Contents of the invention [0003] In order to solve the above technical problems, at least one embodiment of the present invention provides a light collimating structure...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/13357
CPCG02F1/133606G02F1/133607G02B5/1866G02B19/0014G02B19/0066G02B27/4205G02F1/0105G02F1/133603G02F2201/30G02F2201/305G02B19/0028G02B27/30
Inventor 谭纪风梁蓬霞
Owner BOE TECH GRP CO LTD