IP Library Granted Patent US 10,976,611
Granted Patent B2
US 10,976,611 · App. 16/039,728 · Granted Apr 13, 2021

Display device

Inventors: Akimasa Yuuki (Tokyo, JP); Yasunori Niwano (Tokyo, JP); Kazunori Okumoto (Tokyo, JP); Shinsaku Yamaguchi (Tokyo, JP); Toshiaki Fujino (Tokyo, JP)
Assignee: Mitsubishi Electric Corporation
G02F1/13363G02F1/13471G02F1/133528G02F1/133753G02F2001/133531G02F2001/133633
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Quick Facts
Patent No.
US 10,976,611
App. No.
16/039,728
Granted
Apr 13, 2021
Kind
B2
Abstract

The object is to provide a display device with a superior viewing angle. The display device includes a display portion, a liquid-crystal barrier portion, first to third polarizing layers, and at least one viewing-angle compensation layer. The liquid-crystal barrier portion is disposed on one side of the display portion, and adjusts an intensity of light of the display portion. The first polarizing layer is disposed opposite to the liquid-crystal barrier portion relative to the display portion. The second polarizing layer is interposed between the display portion and the liquid-crystal barrier portion. The third polarizing layer is disposed opposite to the display portion relative to the liquid-crystal barrier portion. The viewing-angle compensation layer is interposed between the liquid-crystal barrier portion and the third polarizing layer, and no viewing-angle compensation layer is interposed between the second polarizing layer and the liquid-crystal barrier portion.

Claims (14)

1. A stereoscopic display device, comprising:

a display portion;

a liquid-crystal barrier portion being disposed on one side of the display portion, and adjusting an intensity of light of the display portion;

a first polarizing layer disposed opposite to the liquid-crystal barrier portion relative to the display portion, a second polarizing layer interposed between the display portion and the liquid-crystal barrier portion, and a third polarizing layer disposed opposite to the display portion relative to the liquid-crystal barrier portion; and

at least one viewing-angle compensation layer interposed between the liquid-crystal barrier portion and the third polarizing layer, wherein

no viewing-angle compensation layer is interposed between the second polarizing layer and the liquid-crystal barrier portion,

the second polarizing layer is directly bonded to the liquid-crystal barrier portion with a photosensitive transparent resin,

the display portion includes a liquid-crystal panel in a vertical alignment mode or an in-plane switching mode,

the liquid-crystal barrier portion includes a liquid-crystal panel in a twisted nematic mode,

the display portion and the liquid-crystal barrier portion separate images to form a stereoscopic image,

the liquid-crystal barrier portion is disposed on a light incidence side of the display portion,

the at least one viewing-angle compensation layer includes a first liquid crystal film that is a liquid crystal film having an orientation axis parallel to an absorption axis of the second polarizing layer, and

the at least one viewing-angle compensation layer further includes a second liquid crystal film interposed between the liquid-crystal barrier portion and the first liquid crystal film, the second liquid crystal film being a liquid crystal film having an orientation axis perpendicular to the absorption axis of the second polarizing layer.

2. The stereoscopic display device according to claim 1 , wherein the number of said second polarizing layer is one.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 17, 2021
From: MITSUBISHI ELECTRIC CORPORATION
To: TRIVALE TECHNOLOGIES
Reel/Frame 058171/0257 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 19, 2018
From: YUUKI, AKIMASA; NIWANO, YASUNORI; OKUMOTO, KAZUNORI; YAMAGUCHI, SHINSAKU; FUJINO, TOSHIAKI
To: MITSUBISHI ELECTRIC CORPORATION
Reel/Frame 046400/0653 →