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Backlight module and display device

A backlight module and light source technology, applied in the optical field, can solve the problems of poor brightness uniformity and chromaticity uniformity, and achieve the effect of improving brightness and chromaticity uniformity and reducing leakage

Inactive Publication Date: 2016-02-24
NANJING TECH CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The main purpose of the present invention is to provide a backlight module and a display device to solve the problems of poor brightness uniformity and chromaticity uniformity of the backlight module in the prior art

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The backlight module provided in this embodiment includes a blue light source, a light guide plate, and a reflective layer. The light guide plate has a light incident surface, a first light exit surface, three light leakage surfaces, and a second light exit surface parallel to the first light exit surface. The light incident surface of the light plate is arranged correspondingly, and the reflective layer is arranged correspondingly to the second light outlet surface of the light guide plate. The backlight module also includes a light conversion layer arranged on a light leakage surface. The material is CdSe / ZnS core-shell quantum dots, the base material of the light conversion layer is polyacrylate, the particle diameter of the quantum dots is 10nm, the weight percentage of the quantum dots in the light conversion layer is 8%, and the thickness of the light conversion layer is 200μ0, And the thickness of the light guide plate is 4mm.

Embodiment 2

[0041] The backlight module provided by this embodiment has the following differences from Embodiment 1, and the others are the same as Embodiment 1:

[0042] The light conversion layer is arranged on each light leakage surface, the light conversion material in the light conversion layer is YAG phosphor powder, the base material of the light conversion layer is silica gel, the weight percentage of the phosphor powder in the light conversion layer is 8%, the light conversion layer The thickness is 200μ0, and the thickness of the light guide plate is 4mm.

Embodiment 3

[0044] The backlight module provided by this embodiment has the following differences from Embodiment 1, and the others are the same as Embodiment 1:

[0045] The light conversion layer is arranged on each light leakage surface, the particle size of the CdSe / ZnS core-shell quantum dots is 10nm, the weight percentage of the quantum dots in the light conversion layer is 15%, the thickness of the light conversion layer is 100%, and the light guide plate The thickness is 1mm.

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Abstract

The invention provides a backlight module and a display device. The backlight module comprises a light source, a light-guide plate and a reflection layer. The light-guide plate is provided with a light-incident surface, a first light-emitting surface, three light-leaking surfaces and a second light-emitting surface parallel to the first light-emitting surface. The light source and the light-incident surface are correspondingly arranged. The reflection layer and the second light-emitting surface are correspondingly arranged. The backlight module further comprises light conversion layers arranged on at least one light-leaking surface and used for converting emergent light emitted from at least one light-leaking surface to white light. As a result, the color of emergent light emitted from at least one light-leaking surface is turn into white through color complementation such that leakage of blue light of the backlight module is effectively reduced. It is ensured that a large amount of light emitted from the first light-emitting surface of the light-guide plate is blue light. Blue light is further converted into white light so that luminance and color uniformity of the backlight module are improved.

Description

technical field [0001] The invention relates to the field of optical technology, in particular to a backlight module and a display device. Background technique [0002] Backlight modules mainly include direct-type modules and side-type modules. The traditional side-entry module uses the light guide plate to replace the light from the white light source into a uniform surface light source, but part of the light will leak out from the three side surfaces opposite the light guide plate and the incident surface of the light source, which will lead to the brightness and brightness of the backlight module. Color uniformity is reduced. In this regard, in the prior art, the above-mentioned problem is usually solved by setting a black masking glue, and the above-mentioned problem can also be solved by coating an ink material and utilizing the light absorption and reflection effect of the ink. [0003] On the other hand, the existing display devices use white light-emitting diodes, ...

Claims

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Application Information

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IPC IPC(8): G02F1/13357G02B6/00
CPCG02B6/0011G02F1/1336G02F1/133609G02F1/133611G02F1/133614
Inventor 尹侠姜晓昉康永印赵飞
Owner NANJING TECH CORP LTD
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