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Light-emitting diode, backlight module and liquid crystal display device

A technology of light-emitting diodes and light-emitting layers, applied in optics, nonlinear optics, instruments, etc., can solve the problems of high power consumption of electrical equipment and low luminous efficiency of polarized LEDs, and achieve high luminous efficiency

Inactive Publication Date: 2018-01-05
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the use of polarized LEDs grown on non-polar or semi-polar GaN substrates also has the problem of low luminous efficiency, resulting in high power consumption of electrical equipment

Method used

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  • Light-emitting diode, backlight module and liquid crystal display device
  • Light-emitting diode, backlight module and liquid crystal display device
  • Light-emitting diode, backlight module and liquid crystal display device

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Embodiment Construction

[0051] In order to further explain the technical means and effects of the present invention to achieve the intended purpose of the invention, in conjunction with the accompanying drawings and preferred embodiments, the specific implementation methods, Structure, characteristic and effect thereof are as follows in detail. In the following description, different "one embodiment" or "embodiment" do not necessarily refer to the same embodiment. Furthermore, the particular features, structures, or characteristics of one or more embodiments may be combined in any suitable manner.

[0052] In the light emitting diode provided in this embodiment, the light reflection layer can reflect the light reflected by the grating layer to the grating layer again, so that the TM linearly polarized light therein can pass through the grating layer, and the light emitting efficiency of polarized light of the light emitting diode is high.

[0053] Figure 1 to Figure 2 For an embodiment of the ligh...

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Abstract

The invention relates to a light-emitting diode, s backlight module and a liquid crystal display device, relates to the field of polarized light-emitting devices, and is mainly aimed at providing a novel polarized LED with high light-emitting efficiency. The light-emitting diode comprises an optical grating layer, a light reflecting layer and a light-emitting part. The light-emitting part is arranged between the optical grating layer and the light reflecting layer. After the emission light emitted by the light-emitting part arrives at the optical grating layer, through the optical grating layer, TM line polarized light perpendicular to the optical grating direction of the optical grating layer can penetrate, the TE line polarized light parallel to the optical grating direction of the optical grating layer can be reflected, the light reflected by the optical grating layer can arrive at the optical grating layer again after being reflected by a light reflecting surface of the light reflecting layer, the TM line polarized light passes through the optical grating layer, and therefore the light-emitting efficiency of polarized light of the light-emitting diode is high.

Description

technical field [0001] The invention relates to the field of polarized light emitting devices, in particular to a light emitting diode, a backlight module and a liquid crystal display device. Background technique [0002] Polarized LED is a light source that can emit polarized light by itself. Its manufacturing process is obtained by growing a non-polar or semi-polar GaN substrate to form a polarized light source that can emit polarized light. It is used in liquid crystal backlights, It has great application value in the field of communication and imaging. [0003] Taking the liquid crystal backlight as an example, in order to simplify the structure of the traditional dual-polarizer liquid crystal display, the current practice is to use a polarized LED backlight that can directly emit polarized light as the liquid crystal backlight of the liquid crystal display, which can reduce the volume of the liquid crystal display. [0004] However, the use of polarized LEDs grown on n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13357
CPCG02F1/133603G02F1/13362G02F1/133614H01L33/32H01L33/405H01L33/44H01L33/502H01L33/504H01L33/505H01L33/60H01L2933/0083G02F1/133621G02F2201/30G02F2202/108H01L33/06
Inventor 郭康谷新徐威张笑刘震
Owner BOE TECH GRP CO LTD
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