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Light guide plate, backlight module and display device

A technology of backlight module and light guide plate, applied in the optical field, can solve the problems of light homogenization and brightness difference, and achieve the effect of improving light homogenization and brightness

Active Publication Date: 2019-08-30
NANJING TECH CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to provide a light guide plate, a backlight module and a display device, so as to solve the problem of poor light uniformity and brightness of display devices equipped with a light guide plate in the prior art

Method used

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  • Light guide plate, backlight module and display device
  • Light guide plate, backlight module and display device
  • Light guide plate, backlight module and display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] The light guide plate provided in this embodiment includes a substrate, a scattering part, and a light conversion part. The first surface of the substrate has grooves scattered and distributed, and the grooves form the scattering function structure of the scattering part. The light conversion part is arranged on the first surface, and the light conversion The light conversion functional structure of the part is arranged in the form of dispersed points, and the first surface is divided into a first sub-edge area, a second sub-edge area, a third sub-edge area, a fourth sub-edge area and a non-edge area, and the light conversion The scattering part is arranged in the four sub-edge regions, and the scattering part is arranged in the non-edge region.

[0057] Each sub-edge area has a row of equally spaced light-converting dots, the cross-sections of the light-converting dots and the scattering groove dots parallel to the first surface are circular, and the diameter ratio of t...

Embodiment 2

[0060] The light guide plate provided in this embodiment includes a substrate, a scattering part, and a light conversion part. The point form is set, the first surface is divided into the first sub-edge area, the second sub-edge area, the third sub-edge area, the fourth sub-edge area and the non-edge area, the light conversion part is arranged in the four sub-edge areas, and the scattering set in the non-marginal area.

[0061] Each sub-edge area is provided with a row of equally spaced light conversion network points, and the non-edge area is provided with equally spaced scattering network points. The diameter ratio of the scattering dots is 10:1. The materials forming the photoconverting functional structure are CdSe / ZnS core-shell quantum dots with an emission wavelength of 570nm and a silica gel matrix, wherein the concentration of the quantum dots is the same.

[0062] Wherein, the substrate is a PMMA substrate, and the material forming the scattering functional structu...

Embodiment 3

[0064]The difference between the light guide plate provided in this embodiment and Embodiment 2 is:

[0065] The light conversion part is arranged on the four sub-edge regions, and the scattering part is arranged on the non-edge region and the same four sub-edge regions as the light conversion part, and each sub-edge region has a row of scattering dots distributed at equal intervals, and is arranged on the edge region. The scattering dots and light conversion dots are arranged alternately.

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Abstract

The present invention provides a light guide plate, a backlight module set and a display device. The light guide plate includes a substrate, a scattering portion and a light conversion portion; grooves are dispersed on the first surface of the substrate; the grooves form a scattering functional structure of the scattering portion; the light conversion portion is arranged on the first surface, and the light conversion functional structure of the light conversion portion is set to a dispersed dot form; and or the scattering portion and the light conversion portion are both arranged on the first surface of the substrate, and the scattering functional structure of the scattering portion and the light conversion functional structure of the light conversion portion are set to dispersed dot forms. Since a reticular dot layer comprises the light conversion portion on the basis of the scattering portion, and a light converting material in the light conversion portion has a scattering effect, and therefore, the light conversion portion cannot only further scatter incident light entering the light guide plate, and but also can convert the incident light to compensate the brightness of emergent light, and thus, the light equalizing performance and brightness of a display device provided with the light guide plate can be improved.

Description

technical field [0001] The invention relates to the field of optical technology, in particular to a light guide plate, a backlight module and a display device. Background technique [0002] With the continuous development of display technology, people have higher and higher requirements on the imaging quality of display devices. The currently widely used display devices have a narrow color gamut and poor color reproduction ability due to the limitation of the spectral characteristics of the white light LED light source. [0003] Quantum dot materials have the advantages of continuous spectrum and adjustable light color. Due to these advantages of quantum dot materials, the application of quantum dot materials in display devices can increase the color gamut of display devices, thereby improving image quality. [0004] The light guide plate in the prior art usually has a scattering part to scatter the outgoing light of the light source. However, in the manufacturing process o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/00G02F1/13357
CPCG02B6/0038G02B6/0051G02F1/1336G02F1/133614
Inventor 尹侠康永印赵飞杜向鹏
Owner NANJING TECH CORP LTD
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