IP Library Granted Patent US 12,650,626
Granted Patent B2
US 12,650,626 · App. 18/912,125 · Granted Jun 9, 2026

Liquid crystal display panel

Inventor: Akio Ota (Tottori, JP)
Assignee: Magnolia White Corporation
G02F1/134363G02F1/133345G02F1/133512G02F1/133707G02F1/134336G02F1/133388G02F1/134345G02F1/134372G02F1/136286
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Quick Facts
Patent No.
US 12,650,626
App. No.
18/912,125
Granted
Jun 9, 2026
Kind
B2
Abstract

A transverse electric field type liquid crystal display panel includes a pair of substrates opposed with a liquid crystal layer interposed therebetween. A plurality of sub-pixels having at least one curved portion in a display area are provided in a matrix on one side of the pair of substrates, and a pair of electrodes having at least one curved portion are formed in the plurality of sub-pixels. A light shield layer shielding a non-display area positioned on an outer peripheral side of the display area and between the plurality of sub-pixels is formed on the other side of the pair of substrates. The light shield layer of the non-display area is formed in a shape in which the outermost peripheral side of the display area is rectangular.

Claims (35)

1 . A liquid crystal display panel comprising:

a first substrate and a second substrate opposed to each other with a liquid crystal layer therebetween;

thin film transistors arranged between the first substrate and the second substrate, the thin film transistors each having a gate electrode, a drain electrode, and a source electrode;

scan lines extending overall in a first direction, the scan lines each being connected to the gate electrode of a corresponding one of the thin film transistors;

signal lines extending overall in a second direction crossing the first direction, the signal lines each being connected to one of the source electrode and the drain electrode in a corresponding one of the thin film transistors;

a light shield layer; and

pixels each having

a pixel electrode on a liquid crystal layer side of the first substrate,

a common electrode on a liquid crystal layer side of the pixel electrode with an insulating layer therebetween,

wherein

the pixel electrode is connected to other one of the source electrode and the drain electrode in the corresponding one of the thin film transistors at a connection portion,

the connection portion is entirely covered with the light shield layer,

the pixels are surrounded by the scan lines and the signal lines and that are arranged in a matrix,

the pixels include first pixels and second pixels that are pixels other than the first pixels,

each of the second pixels is not entirely overlapped by the light shield layer, the second pixels including outermost second pixels,

each of the first pixels is entirely overlapped by the light shield layer,

the first pixels are arranged outermost in the first direction among the pixels, in a first outermost row that is a single row along the second direction, and are adjacent to the outermost second pixels,

the outermost second pixels are the second pixels outermost in the first direction among the second pixels and are disposed in a second outermost row along the second direction, and

each of the outermost second pixels are not entirely overlapped by the light shield layer.

2 . The liquid crystal display panel according to claim 1 , wherein

the common electrode extends in the second direction in which the signal lines extend,

the common electrode has a plurality of slits arranged in the first direction in which the scan lines extend, and

the slits bent at a central portion of each of the pixels, in the second direction in which the signal lines extend overall.

3 . The liquid crystal display panel according to claim 2 ,

wherein the scan lines and the signal lines are overlapped by the light shield layer.

4 . The liquid crystal display panel according to claim 3 , wherein

the second substrate has a first surface side that faces the liquid crystal layer, and

the light shield layer is disposed on the first surface side of the second substrate.

5 . The liquid crystal display panel according to claim 4 , wherein

the first substrate has a first surface side and a second surface side that faces the liquid crystal layer, and

the scan lines and signal lines are disposed on the second surface side of the first substrate.

6 . The liquid crystal display panel according to claim 5 ,

wherein the first pixels are dummy pixels that are in an inactive state.

7 . The liquid crystal display panel according to claim 6 ,

wherein the signal lines are bent along a shape of the pixels or the slits.

Assignments (4)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 2, 2025
From: JAPAN DISPLAY INC.
To: MAGNOLIA WHITE CORPORATION
Reel/Frame 071793/0491 →
CHANGE OF NAME Recorded Oct 11, 2024
From: JAPAN DISPLAY WEST INC.
To: JAPAN DISPLAY INC.
Reel/Frame 069168/0148 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 11, 2024
From: OTA, AKIO
To: SONY CORPORATION
Reel/Frame 068877/0474 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 11, 2024
From: SONY CORPORATION
To: JAPAN DISPLAY WEST INC.
Reel/Frame 068878/0455 →
Continuity (8)
Continuation 18240005 · Aug 30, 2023
Continuation 17323237 · May 18, 2021
Continuation 16226136 · Dec 19, 2018
Continuation 15341758 · Nov 2, 2016
Continuation 14689379 · Apr 17, 2015
Continuation 14048113 · Oct 8, 2013
Continuation 13330150 · Dec 19, 2011
Related Publication 20250035992A1 · Jan 30, 2025
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