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1. WO2007088954 - DISPLAY DEVICE

Publication Number WO/2007/088954
Publication Date 09.08.2007
International Application No. PCT/JP2007/051749
International Filing Date 26.01.2007
IPC
G PHYSICS
02
OPTICS
F
DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1
Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
01
for the control of the intensity, phase, polarisation or colour
13
based on liquid crystals, e.g. single liquid crystal display cells
133
Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
1333
Constructional arrangements
1335
Structural association of optical devices, e.g. polarisers, reflectors, with the cell
[IPC code unknown for ERROR IPC Code incorrect: invalid subgroup (0=>999999)!]
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
L
SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
51
Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof
50
specially adapted for light emission, e.g. organic light emitting diodes (OLED) or polymer light emitting devices (PLED)
H ELECTRICITY
05
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
B
ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
33
Electroluminescent light sources
02
Details
G02F 1/1335 (2006.01)
G02F 1/13363 (2006.01)
H01L 51/50 (2006.01)
H05B 33/02 (2006.01)
CPC
G02F 1/133528
G02F 2201/16
H01L 2251/5323
H01L 27/3244
H01L 51/5281
Applicants
  • SEMICONDUCTOR ENERGY LABORATORY CO., LTD. [JP/JP]; 398, Hase, Atsugi-shi, Kanagawa 2430036, JP (AllExceptUS)
  • EGI, Yuji [JP/JP]; JP (UsOnly)
  • NISHI, Takeshi; null (UsOnly)
  • ISHITANI, Tetsuji; null (UsOnly)
Inventors
  • EGI, Yuji; JP
  • NISHI, Takeshi; null
  • ISHITANI, Tetsuji; null
Priority Data
2006-02641502.02.2006JP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) DISPLAY DEVICE
(FR) DISPOSITIF D'AFFICHAGE
Abstract
(EN)
The present invention provides a display device with higher contrast ratio. The display device includes a first substrate, a second substrate, a layer including a display element which is interposed between the first substrate and the second substrate, and stacked polarizers on an outer side of the first substrate or the second substrate. The stacked polarizers are arranged to be in parallel Nicols. The stacked polarizers have the same wavelength distribution in the extinction coefficients. Further, a retardation plate may be provided between the stacked polarizers and the first substrate or the second substrate. The stacked polarizers are provided for both of the first substrate and the second substrate, and the stacked polarizers on the outer side of the first substrate and the stacked polarizers on the outer side of the second substrate are arranged to be in crossed Nicols or parallel Nicols.
(FR)
La présente invention concerne un dispositif d'affichage avec un rapport de contraste supérieur. Le dispositif d'affichage inclut un premier substrat, un second substrat, une couche incluant un élément d'affichage qui est intercalée entre le premier substrat et le second substrat, et des polariseurs empilés sur un côté extérieur du premier substrat ou du second substrat. Les polariseurs empilés sont disposés pour être en nicols parallèles. Les polariseurs empilés ont la même répartition de longueur d'onde dans les coefficients d'extinction. En outre, une plaque de retardement peut être prévue entre les polariseurs empilés et le premier substrat ou le second substrat. Les polariseurs empilés sont prévus tant pour le premier substrat que pour le second substrat et les polariseurs empilés sur le côté extérieur du premier substrat et les polariseurs empilés sur le côté extérieur du second substrat sont disposés pour être en nicols croisés ou nicols parallèles.
Also published as
Latest bibliographic data on file with the International Bureau