Pixel structure and liquid-crystal display

Patent metadata

Field	Value
Publication number	US-9746711-B2
Application number	US-201514845074-A
Country	US
Kind code	B2
Filing date	Sep 3, 2015
Priority date	Sep 15, 2014
Publication date	Aug 29, 2017
Grant date	Aug 29, 2017

Abstract

A pixel structure is provided. The pixel structure includes a substrate and an insulating layer on the substrate. The insulating layer includes a plane region. An electrode pattern is disposed on the insulating layer and located on the plane region. The electrode pattern includes a bottom layer and a plurality of protrusions connected to the bottom layer. The protrusions protrude from the top surface of the bottom layer towards a direction away from the substrate. The bottom layer covers the plane region. A plurality of slits are formed between the protrusions so as to expose portions of the bottom layer. A liquid-crystal display having the pixel structure is also provided.

First claim

What is claimed is:

1. A pixel structure, comprising:
a substrate;
an insulating layer on the substrate and comprising a plane region; and
an electrode pattern disposed on the insulating layer and located on the plane region, wherein the electrode pattern comprises a bottom layer and a plurality of protrusions connected to the bottom layer, wherein the plurality of protrusions protrude from a top surface of the bottom layer towards a direction away from the substrate, and wherein a height of the plurality of protrusions is in a range of 50-150 nm,
wherein the bottom layer covers the plane region and a plurality of slits are formed between the protrusions so as to expose portions of the bottom layer.

2. The pixel structure as claimed in claim 1 , wherein one of the protrusions has a sidewall, and wherein an included angle between the sidewall and the top surface is in a range from 60 to 90 degrees.

3. The pixel structure as claimed in claim 1 , wherein the bottom layer of the electrode pattern is a layer with a substantially uniform thickness, and wherein the plane region has a substantially planar surface.

4. A liquid-crystal display, comprising:
a first substrate;
a second substrate disposed opposite to the first substrate;
an insulating layer on the first substrate and comprising a plurality of plane regions arranged as an array;
a first electrode layer on the insulating layer and comprising a plurality of electrode patterns, wherein the plurality of electrode patterns are respectively disposed in the plurality of plane regions, wherein each one of the plurality of electrode patterns comprises a bottom layer and a plurality of protrusions on the bottom layer, wherein the plurality of protrusions protrude from the bottom layer towards a direction away from the substrate, wherein a height of the plurality of protrusions is in a range of 50-150 nm, and wherein the bottom layer covers the plane region and a plurality of slits are formed between the protrusions so as to expose portions of the bottom layer on one of the plurality of plane regions;
a second electrode layer on the second substrate; and
a liquid-crystal layer between the first electrode layer and the second electrode layer.

5. The liquid-crystal display as claimed in claim 4 , further comprising a plurality of scan lines and a plurality of data lines crossing to each other to form a plurality of pixel structures, wherein the plurality of plane regions correspond to the plurality of pixel structures.

6. The liquid-crystal display as claimed in claim 4 , wherein each of the protrusions has a sidewall, and wherein an included angle between the sidewall and a top surface is in a range from 60 to 90 degrees.

7. The liquid-crystal display as claimed in claim 4 , wherein the bottom layer of each of the electrode patterns is a layer with a substantially uniform thickness, and wherein each of the plane regions has a substantially planar surface.

8. The liquid-crystal display as claimed in claim 4 , further comprising:
a first alignment layer between the first electrode layer and the liquid-crystal layer; and
a second alignment layer between the second electrode layer and the liquid-crystal layer.

Assignees

• Innolux Corp

Inventors

• Lee Hsin-Yu
• Yang Ching-Che
• Kao Chen-Kuan
• Sah Wen-Jyh

Classifications

• G02F1/133345

  Insulating layers (G02F1/1335, G02F1/1337, G02F1/135, G02F1/136 take precedence) · CPC title

• G02F1/133707 Primary

  Structures for producing distorted electric fields, e.g. bumps, protrusions, recesses, slits in pixel electrodes · CPC title

• G02F1/136286

  Wiring, e.g. gate line, drain line · CPC title

• G02F2001/13706

  Physics · mapped topic

• G02F2001/13712

  Physics · mapped topic