US 2018/0321552 A1Published application

Liquid crystal display device

AssigneeSharp Kabushiki Kaisha

InventorsYASUHIKO SUGIHARA, SAORI KUROGANE, TAKEYUKI ASHIDA

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Abstract

The liquid crystal display device includes: a first differently shaped polarizing plate provided with a first hole; a liquid crystal display panel; and a second differently shaped polarizing plate provided with a second hole, wherein, when directions parallel to machine directions of the first and second differently shaped polarizing plates are defined as first and second directions, a first length of the first differently shaped polarizing plate in the second direction is shorter than a second length of the second differently shaped polarizing plate in the first direction, and a first radius of curvature of the first hole at a tangent point between a straight line extending in the second direction and the perimeter of the first hole is smaller than a second radius of curvature of the second hole at a tangent point between a straight line extending in the first direction and the perimeter of the second hole.

Claims8

Dependent claims

A liquid crystal display device comprising, in order from front to rear:

a first differently shaped polarizing plate provided with a first hole formed within a face;
a liquid crystal display panel;
and
a second differently shaped polarizing plate provided with a second hole formed within a face,
wherein a machine direction of the first differently shaped polarizing plate and a machine direction of the second differently shaped polarizing plate are perpendicular to each other, and
when a direction parallel to the machine direction of the first differently shaped polarizing plate is defined as a first direction, and a direction parallel to the machine direction of the second differently shaped polarizing plate is defined as a second direction, the following conditions are satisfied:
a first length of the first differently shaped polarizing plate in the second direction is shorter than a second length of the second differently shaped polarizing plate in the first direction, and
a first radius of curvature of the perimeter of the first hole at a tangent point between a straight line extending in the second direction and the perimeter of the first hole is smaller than a second radius of curvature of the perimeter of the second hole at a tangent point between a straight line extending in the first direction and the perimeter of the second hole.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/773,332Filed 31 Oct 2016
Priority: JP 2015-2175285 Nov 2015
Published: 8 Nov 2018
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

G02F 1/133528
Structural association of cells with optical devices, e.g. polarisers or reflectors: polarisers
G02B 5/30
Optical elements other than lenses: polarising elements
G02B 5/3033
Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state: in the form of a thin…
G02B 6/0056
Means for improving the coupling-out of light from the light guide: for producing polarisation effects, e.g. by a surface with polarizing…

Family

US 10,564,468 B2Related patent
US 2018/0321552 A1This patent

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

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