Title:
液晶表示装置
Document Type and Number:
Japanese Patent JP6769849
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a liquid crystal display device of a birefringence control type, in which a black level with high display quality can be achieved and insufficient blackness can be suppressed.SOLUTION: A liquid crystal display device of a birefringence control type that displays in a normally-black mode includes: a liquid crystal display panel 5 having a liquid crystal layer 2 and a light-reflecting part 47 for reflecting light entering through a display screen 3 side and passing through the liquid crystal layer 2; a first polarizing plate 6 disposed on the display screen 3 side of the liquid crystal display panel 5; and a first quarter-wave plate 7 and a second quarter-wave plate 8 disposed between the liquid crystal display panel 5 and the first polarizing plate 6, successively from the side close to the first polarizing plate 6. The liquid crystal layer 2 is configured to have a retardation smaller than the retardation of the second quarter-wave plate 8; the slow axis of the second quarter-wave plate 8 is orthogonal to an alignment axis of liquid crystal molecules when no electric field is applied; and the slow axis of the first quarter-wave plate 7 intersects the slow axis of the second quarter-wave plate 8.SELECTED DRAWING: Figure 1
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Inventors:
Yuji Hayada
Application Number:
JP2016233650A
Publication Date:
October 14, 2020
Filing Date:
November 30, 2016
Export Citation:
Assignee:
Kyocera Corporation
International Classes:
G02F1/13363; G02F1/1335
Domestic Patent References:
| JP11249126A | ||||
| JP2004029201A | ||||
| JP2012108553A | ||||
| JP2004170792A | ||||
| JP201511224A | ||||
| JP2015505988A | ||||
| JP201528631A | ||||
| JP2006146088A | ||||
| JP2005195753A | ||||
| JP2003295179A | ||||
| JP2007025469A |
Foreign References:
| US20120120328 | ||||
| US20060285038 | ||||
| US20050146659 | ||||
| CN1637525A | ||||
| US20020041351 | ||||
| CN101846852A |
Attorney, Agent or Firm:
Keiichiro Saikyo