Liquid crystal display panel

Patent metadata

Field	Value
Publication number	US-11347115-B2
Application number	US-201817271028-A
Country	US
Kind code	B2
Filing date	Aug 31, 2018
Priority date	Aug 31, 2018
Publication date	May 31, 2022
Grant date	May 31, 2022

Abstract

A liquid crystal display panel includes a first substrate section having a first substrate and pixel electrodes (102). Each pixel electrode (102) includes a bridging portion (102c) provided between a first pixel electrode portion (102a) and a second pixel electrode portion (102b) and linking together the first pixel electrode portion (102a) and the second pixel electrode portion (102b). A first recess (102d) is provided at one side along the width direction of the pixel electrode (102), the first recess (102d) extending from one side along the width direction of the pixel electrode (102) toward the bridging portion (102c) and being located between the first pixel electrode portion (102a) and the second pixel electrode portion (102b). A second recess (102e) is provided at another side along the width direction of the pixel electrode (102), the second recess (102e) extending from the other side along the width direction of the pixel electrode (102) toward the bridging portion (102c) and being located between the first pixel electrode portion (102a) and the second pixel electrode portion (102b).

First claim

The invention claimed is:

1. A liquid crystal display panel having a display mode that is a VA mode, comprising:
a plurality of rectangular-shaped pixels;
a first substrate section including a first substrate and pixel electrodes;
a liquid crystal layer provided on the first substrate section, the liquid crystal layer containing liquid crystal molecules; and
a second substrate section provided on the liquid crystal layer, the second substrate section including a second substrate and a counter electrode, wherein,
the plurality of pixels each include a first domain, a second domain, a third domain, and a fourth domain arranged along a longitudinal direction of the pixel,
when a direction orthogonal to the longitudinal direction of the pixel is defined as a transverse direction of the pixel and an azimuth flush with the transverse direction of the pixel is defined as 0°, an alignment azimuth of the liquid crystal molecules in the second domain is substantially 225° and an alignment azimuth of the liquid crystal molecules in the third domain is substantially 45°, or an alignment azimuth of the liquid crystal molecules in the second domain is substantially 315° and an alignment azimuth of the liquid crystal molecules in the third domain is substantially 135°,
each pixel electrode includes
a first pixel electrode portion facing the first and second domains in a thickness direction of the pixel electrode,
a second pixel electrode portion facing the third and fourth domains in the thickness direction of the pixel electrode,
a bridging portion being provided between the first pixel electrode portion and the second pixel electrode portion and linking together the first pixel electrode portion and the second pixel electrode portion,
a first recess being provided at one side along a width direction of the pixel electrode, the first recess extending toward the bridging portion along the width direction of the pixel electrode and being located between the first pixel electrode portion and the second pixel electrode portion, and
a second recess being provided at another side along the width direction of the pixel electrode, the second recess extending toward the bridging portion along the width direction of the pixel electrode and being located between the first pixel electrode portion and the second pixel electrode portion,
when a center line which extends along the longitudinal direction of the pixel and which passes through a center of the width direction of the pixel electrode is defined, the bridging portion overlaps the center line,
the first recess is not aligned in position with the second recess along the width direction of the pixel electrode.

Assignees

• Sakai Display Products Corp
• Sharp Kk

Inventors

• Hirata Mitsuaki
• Shimoshikiryoh Fumikazu

Classifications

• G02F1/133742

  for homeotropic alignment · CPC title

• G02F1/13373 Primary

  Disclination line; Reverse tilt · CPC title

• G02F1/134309 Primary

  characterised by their geometrical arrangement · CPC title

• G02F1/134345

  Subdivided pixels, e.g. for grey scale or redundancy · CPC title