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Backlight unit and display device

a backlight unit and display device technology, applied in the field of display technologies, can solve problems such as chromatic aberration and certain levels

Active Publication Date: 2019-07-11
BOE TECH GRP CO LTD
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present disclosure provides a backlight unit comprising a waveguide layer and a light source component. The waveguide layer has a light-entering surface, a bottom surface, and a light-exiting surface. A first grating layer is located at the bottom surface, and a refractive layer is located at the light-exiting surface. The refractive layer has a refractive lens unit that can converge diffracted light. The backlight unit can also comprise a lower substrate and an upper substrate, with the refractive index of the upper substrate being greater than the refractive index of the refractive lens unit. The technical effect of this arrangement is the improved distribution of light from the backlight unit in a display device, resulting in brighter and more evenly distributed images.

Problems solved by technology

However, in the related art, the grating structure in the backlight system may cause a certain level of chromatic aberration.

Method used

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Embodiment Construction

[0026]Embodiments of the present disclosure are described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals indicate throughout the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are illustrative. These embodiments are for illustrative purposes only and are not to be construed as limiting the disclosure.

[0027]A person having ordinary skill in the art will appreciate that, unless otherwise defined, all of the terms (including technical terms and scientific terms) used herein have the same meaning as commonly understood by the person having ordinary skill in the art. It should also be understood that the terms such as those defined in a general dictionary should be understood as having a meaning consistent with the meaning in the context of the related art. Meanwhile, unless specifically defined, the terms will not be inte...

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Abstract

A backlight unit includes a waveguide layer and a light source component. The waveguide layer includes a light-entering surface located its side surface, a bottom surface located at its bottom, and a light-exiting surface located at its top. A first grating layer is arranged at the bottom surface. A refractive layer is arranged at the light-exiting surface. The light source component is located beside the light-entering surface. The refractive layer includes a refractive lens unit. The refractive lens unit converges the diffracted light dispersed by means of the diffraction caused by the first grating layer when the backlight unit is in operation.

Description

RELATED APPLICATION[0001]The present application claims priority to Chinese Patent Application No. 201810022757.9 filed on Jan. 10, 2018, the entire contents of which are hereby incorporated by reference.TECHNICAL FIELD[0002]The present disclosure relates to the field of display technologies, particularly to a backlight unit and a display device.BACKGROUND[0003]With the development of the times, the miniaturization of the liquid crystal displays has become a trend. A miniaturized liquid crystal displays requires its backlight to be a uniform and collimated surface light source. Currently, single-side collimated side-entry backlights are widely used in a variety of backlight implementations. However, in the related art, the grating structure in the backlight system may cause a certain level of chromatic aberration.SUMMARY[0004]The present disclosure provides a backlight unit comprising a waveguide layer and a light source component. The waveguide layer comprises a light-entering surf...

Claims

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Application Information

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IPC IPC(8): G02B6/122F21V8/00G02B27/09G02F1/1335
CPCG02B6/122G02B6/0016G02B27/0944G02F1/133602G02B27/0955G02B6/005G02F1/133615G02F1/167G02B6/0041G02B6/0038G02B6/0033
Inventor MENG, XIANDONGMENG, XIANQINTAN, JIFENGWANG, WEICHEN, XIAOCHUANYANG, YAFENGGAO, JIAN
Owner BOE TECH GRP CO LTD
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