Light guide plate with toothed light incident surface

Patent metadata

Field	Value
Publication number	US-10739508-B2
Application number	US-201716475376-A
Country	US
Kind code	B2
Filing date	Dec 22, 2017
Priority date	Dec 30, 2016
Publication date	Aug 11, 2020
Grant date	Aug 11, 2020

Abstract

A light guide plate with a toothed light incident surface includes a light guide plate body. A first plate surface and a second plate surface are formed at two opposite surfaces of the light guide plate body, respectively. Micro-structure points are provided and distributed randomly and densely on the first plate surface. Among multiple side surfaces of the light guide plate body, at least one side surface is provided with a plurality of first teeth arranged sequentially in parallel. The first teeth extend along a height direction of the light guide plate body. A first groove is arranged between every two neighboring first teeth. The light incident surface is formed by the plurality of first teeth and the plurality of first grooves.

First claim

What is claimed is:

1. A light guide plate with a toothed light incident surface, comprising a light guide plate body, wherein a first plate surface and a second plate surface are formed at two opposite surfaces of the light guide plate body, respectively, the first plate surface is provided with a plurality of micro-structure points arranged in an array, a light incident side surface of the light guide plate body is provided with a plurality of first teeth arranged sequentially in parallel, the first teeth extend along a height direction of the light guide plate body, a first groove is arranged between every two neighboring first teeth, the light incident surface is formed by the plurality of first teeth and the plurality of first grooves;
wherein the second plate surface is provided with a plurality of second teeth arranged sequentially in parallel, and the second teeth are parallel to the light incident side surface, a second groove is arranged between every two neighboring second teeth, a light exiting surface is formed by the plurality of second teeth and the plurality of second grooves;
wherein the second plate surface is provided with a protruding ridge, the protruding ridge has a right-angled trapezoidal cross section and includes a vertical surface, a flat top surface and an inclined surface, the inclined surface of the protruding ridge is connected to the light exiting surface, the vertical surface of the protruding ridge is connected to the light incident side surface, the first teeth and the first grooves extend along the vertical surface and are connected to the flat top surface of the protruding ridge.

2. The light guide plate with the toothed light incident surface according to claim 1 , wherein the first teeth and the first grooves each have a triangular cross section.

3. The light guide plate with the toothed light incident surface according to claim 1 , wherein the second teeth and the second grooves each have a triangular cross section.

4. The light guide plate with the toothed light incident surface according to claim 1 , wherein the micro-structure points on the first plate surface are indentations.

Assignees

• Nicrotek Co Ltd
• Univ Soochow
• Svg Optronics Co Ltd

Inventors

• Zhang Heng
• Fang Zongbao
• Zhu Zhijian
• Chen Linsen

Classifications

• G02B6/0036 Primary

  2-D arrangement of prisms, protrusions, indentations or roughened surfaces · CPC title

• G02B6/002 Primary

  by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces · CPC title

• G02B6/0028

  Light guide, e.g. taper · CPC title

• G02B6/0016

  Grooves, prisms, gratings, scattering particles or rough surfaces · CPC title

• G02B6/0038

  Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide · CPC title