IP Library Granted Patent US 9,791,730
Granted Patent B2
US 9,791,730 · App. 14/719,879 · Granted Oct 17, 2017

Liquid-crystal display device

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Quick Facts
Patent No.
US 9,791,730
App. No.
14/719,879
Granted
Oct 17, 2017
Kind
B2
Abstract

An LCD device according to a group of embodiments comprises array and counter substrates, a liquid-crystal layer and a liquid-crystal alignment layer, where the array substrate or the counter substrate further comprises: a pattern of color filter layer, formed of a plurality of color regions; a pattern of light-shielding film, comprising band-shaped portions that run along boundaries of the color regions; and protrusions formed by the color filter layer and run along boundaries of the color regions; and boundaries between the color regions being respectively deviated from centerlines of the band-shaped portions by 1 μm or more.

Claims (19)

1. A liquid-crystal display (LCD) device comprising:

an array substrate having an array of scanning lines and an array of signal lines, in a view area;

a counter substrate;

a liquid-crystal layer held between the substrates; and

a liquid-crystal alignment layer that causes aligning of liquid-crystal molecules in a direction along the substrates;

the array substrate or the counter substrate further comprising:

a pattern of color filter layer, formed of a plurality of color regions;

a pattern of a light-shielding film, comprising band-shaped portions that run along boundaries of the color regions; and

protrusions that are formed by the color filter layer and run along the boundaries between the color regions; and

the boundaries being respectively deviated from centerlines of the band-shaped portions by 1 μm or more, wherein

in a manner to sandwich each of the signal lines in a plan view, auxiliary capacitor lines are arranged in parallel with the signal lines, width dimensions of the auxiliary capacitor lines differ among those sandwiching a portion of one of the signal lines, and the width dimensions of the auxiliary capacitor lines are increased and decreased according to a distance of offsetting the centerlines of the signal lines respectively from the centerlines of the band-shaped portions.

2. The LCD device according to claim 1 , wherein centerlines of the signal lines are respectively deviated from the centerlines of the band-shaped portions by 1 μm or more.

3. The LCD device according to claim 1 , wherein the boundaries between the color regions are deviated toward upstream of rubbing direction, respectively from the centerlines of the band-shaped portions.

4. The LCD device according to claim 1 , wherein centerlines of the signal lines are deviated toward upstream of rubbing direction, respectively from the centerlines of the band-shaped portions.

5. The LCD device according to claim 2 , wherein a distance of offsetting the centerlines of the signal lines respectively from the centerlines of the band-shaped portions is no more than 5 pm; and

a distance of offsetting the boundaries respectively from the centerlines of the band-shaped portions is no more than 8 pm.

6. The LCD device according to claim 1 , wherein a thickness of the color filter layer is not less than 1 μm.

7. The LCD device according to claim 2 , wherein when width dimension of the band-shaped portion is in a range of 15 μm to 25 μm, a distance of offsetting the centerlines of the signal lines respectively from the centerlines of the band-shaped portions and a distance of offsetting the boundaries respectively from the centerlines of the band-shaped portions are both no more than 3 μm.

8. The LCD device according to claim 1 , wherein lights passing through the liquid-crystal layer are interrupted at a time a voltage is applied to the liquid-crystal layer, as a normally white mode.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 22, 2025
From: JAPAN DISPLAY INC.
To: MAGNOLIA WHITE CORPORATION
Reel/Frame 072130/0313 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 1, 2015
From: MIYOSHI, AKIHIKO
To: JAPAN DISPLAY INC.
Reel/Frame 036000/0335 →