US 10,520,781 B2Granted

Liquid crystal display

AssigneeSamsung Display Co., Ltd.

InventorsJang Wi Ryu, Cheol Shin, Hak Sun Chang, Ki Chul Shin, Jae-Soo Jang, Ka Eun Kim, Ho Kil Oh, Se Hyun Lee, Hyo Ju Jung, Sang Hyeon Song, Sang Jin Jeon

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Abstract

The present invention relates to a liquid crystal display including: a lower electrode including a unit pixel electrode; an upper electrode including an upper unit electrode facing the unit pixel electrode; and a liquid crystal layer between the lower electrode and the upper electrode and including a plurality of liquid crystal molecules aligned approximately perpendicular to the surfaces of the lower electrode and the upper electrode in the absence of an electric field, wherein the unit pixel electrode includes a stem forming a boundary between a plurality of sub-regions and a plurality of minute branches extending in different directions in two different sub-regions, the upper unit electrode includes an opening facing the stem and extending parallel to the stem, any alignment aid to pretilt the liquid crystal molecules is absent, and a length of the minute branches is equal to or less than about 53 μm.

Claims16

Dependent claims

A liquid crystal display comprising:

a first electrode including at least one first unit electrode;
a second electrode facing the first electrode and including at least one second unit electrode;
and
a liquid crystal layer disposed between the first electrode and the second electrode and including a plurality of liquid crystal molecules,
wherein
a first unit electrode of the at least one first unit electrode includes:
a planar portion including a first edge and a second edge that extend in different directions from each other, the first edge and the second edge extending obliquely to a first direction;
and
a plurality of branches extending from the first edge and the second edge of the planar portion, and
wherein a second unit electrode of the at least one second unit electrode overlaps the plurality of branches of the first unit electrode in a plan view, and includes a first opening overlapping the planar portion of the first unit electrode in the plan view and extending in the first direction to cross the planar portion of the first unit electrode in the first direction in the plan view.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/374,519Filed 3 Apr 2019 · continuation
Priority: KR 10-2013-002789215 Mar 2013
Published: US 2019/0227355 A125 Jul 2019
Granted: 31 Dec 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification18 codes

G02F 1/137
Based on liquid crystals, e.g. single liquid crystal display cells: characterised by the electro-optical or magneto-optical effect, e.g.…
G02F 1/133707
Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers: structures for producing distorted electric fields, e.g.…
G02F 1/134309
Electrodes: characterised by their geometrical arrangement
G02F 1/13439
Electrodes: characterised by their electrical, optical, physical properties; materials therefor; method of making

Family

Application13/935,184Parent of this continuation · filed 3 Jul 2013
Application15/271,034Parent of this continuation · filed 20 Sep 2016
US 9,500,917 B2Parent of this continuation · filed 22 Nov 2016
US 2019/0227355 A1Pre-grant publication · published 25 Jul 2019
US 10,261,379 B2Related patent
US 10,423,043 B2Related patent
US 2014/0267994 A1Published application
US 2017/0010487 A1Published application
US 10,520,781 B2This patent

From the US filing history. Foreign family members aren’t listed.