US 2017/0285410 A1Published application

Liquid-crystal display apparatus and method of giving a pretilt to liquid-crystal molecules

AssigneeSony Corporation

InventorsCHIKASHI KOBAYASHI, SHUNICHI SUWA, MASASHI MIYAKAWA, YOJI NAGASE, SUMITO SHIINA, SEIJI SHIBAHARA, HIROKI TAKAHASHI, HIROMASA MITANI, KUNIHIKO NAGAMINE, KOJI HIDAKA, MASAHIKO MIZUKI

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Abstract

A liquid-crystal display apparatus includes a plurality of rectangular pixels 10. Each pixel 10 includes a first electrode 22 and a second electrode. A slit region and a concave and convex portion are formed in the first electrode 22. It further includes a control circuit. The plurality of pixels are constituted of a first pixel group and a second pixel group. First data lines 41 and 42 for applying a voltage on the first electrode 22 are provided closer to the first substrate than the first electrode 22. In each pixel that constitutes the first pixel group, a second data line extension 42A extending from a second data line 42 is provided adjacent to a first data line 41. In each pixel that constitutes the second pixel group, a first data line extension 41A extending from the first data line 41 is provided adjacent to the second data line 42.

Claims8

Dependent claims

A liquid-crystal display apparatus, comprising:

a first substrate;
and a second substrate, wherein
a plurality of pixels are arrayed between the first substrate and the second substrate in a two-dimensional matrix form in a first direction and a second direction extending in a direction orthogonal to the first direction,
each pixel has
a rectangular shape including a first side extending in the first direction, a third side opposed to the first side, a second side extending in the second direction, and a fourth side opposed to the second side, and includes
a first electrode formed on an opposed surface of the first substrate, which is opposed to the second substrate,
a first alignment film that covers the first electrode and the opposed surface of the first substrate,
a second electrode formed on an opposed surface of the second substrate, which is opposed to the first substrate,
a second alignment film that covers the second electrode and the opposed surface of the second substrate, and
a liquid-crystal layer that is provided between the first alignment film and the second alignment film and contains liquid-crystal molecules,
in each pixel,
a pretilt is given to the liquid-crystal molecules,
a slit region is formed in the first electrode and a concave and convex portion is formed in a region of the first electrode, in which the slit region is not formed,
each pixel further includes, on the first substrate, a control circuit that controls application of a voltage on the first electrode,
the plurality of pixels arrayed in the first direction are constituted of a first pixel group constituted of a plurality of odd-numbered pixels and a second pixel group constituted of a plurality of even-numbered pixels,
in the vicinity of the first sides of the plurality of pixels arrayed in the first direction, a first data line that extends in the first direction and is for applying a voltage on the first electrode via the control circuit is provided closer to the first substrate than the first electrode,
in the vicinity of the third sides of the plurality of pixels arrayed in the first direction, a second data line that extends in the first direction and is for applying a voltage on the first electrode via the control circuit is provided closer to the first substrate than the first electrode,
the slit region is disposed above the first data line and the second data line,
in each pixel that constitutes the first pixel group, a second data line extension extending from the second data line is provided adjacent to the first data line, and
in each pixel that constitutes the second pixel group, a first data line extension extending from the first data line is provided adjacent to the second data line.

17 more elements

A liquid-crystal display apparatus, comprising:

a first substrate;
and a second substrate, wherein
a plurality of pixels are arrayed between the first substrate and the second substrate in a two-dimensional matrix form in a first direction and a second direction extending in a direction orthogonal to the first direction,
each pixel has
a rectangular shape including a first side extending in the first direction, a third side opposed to the first side, a second side extending in the second direction, and a fourth side opposed to the second side, and includes
a first electrode formed on an opposed surface of the first substrate, which is opposed to the second substrate,
a first alignment film that covers the first electrode and the opposed surface of the first substrate,
a second electrode formed on an opposed surface of the second substrate, which is opposed to the first substrate,
a second alignment film that covers the second electrode and the opposed surface of the second substrate, and
a liquid-crystal layer that is provided between the first alignment film and the second alignment film and contains liquid-crystal molecules,
in each pixel,
a pretilt is given to the liquid-crystal molecules,
a slit region is formed in the first electrode and a concave and convex portion is formed in a region of the first electrode, in which the slit region is not formed,
each pixel further includes, on the first substrate, a control circuit that controls application of a voltage on the first electrode,
in the vicinity of the first sides of the plurality of pixels arrayed in the first direction, a data line that extends in the first direction and is for applying a voltage on the first electrode via the control circuit is provided closer to the first substrate than the first electrode, and
assuming that an area of the entire slit region is denoted by S1 and an area of a portion of the slit region, which is provided in a portion of the first electrode, which is positioned above the data line is denoted by S2,
0<S2/S1≦0.1
is satisfied.

15 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/512,108Filed 7 Aug 2015
Priority: JP 2014-19654626 Sep 2014
Published: 5 Oct 2017
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

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 1/134336
Characterised by their geometrical arrangement: matrix
G02F 1/136286
Active matrix addressed cells: wiring, e.g. gate line, drain line
G02F 1/133742
Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers: for homeotropic alignment

Family

US 10,082,702 B2Related patent
US 2017/0285410 A1This patent

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

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