Title:
ディスプレイ装置
Document Type and Number:
Japanese Patent JP2007514975
Kind Code:
A
Abstract:
A display device comprises a light emitting picture element (120) and a contrast enhancing element (110). The contrast enhancing element comprises a plurality of wave guides (216) separated by interstitial regions (212) being formed as narrowing recesses. An interface between a wave guide (216) and an interstitial region (212) is provided with a reflective layer. The narrowing recesses form a dead end for incident ambient light which is efficiently absorbed by the contrast enhancing element. On the other hand, light emitted by the picture element (120) of the display device is transmitted through the wave guides (216). As a result, the display device has a relatively high contrast ratio, particularly under bright ambient light conditions.
Inventors:
Ralph Cart
Application Number:
JP2006544610A
Publication Date:
June 07, 2007
Filing Date:
November 24, 2004
Export Citation:
Assignee:
Koninklijke Philips Electronics N.V.
International Classes:
G09F9/00; G02B6/08; G02F1/1335; G03B21/62; G09F9/30; H01J29/89
Domestic Patent References:
| JP2002311234A | 2002-10-23 | |||
| JPH10339808A | 1998-12-22 | |||
| JP2001264520A | 2001-09-26 | |||
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Attorney, Agent or Firm:
Kosaku Sugimura
Shiro Fujitani
Kiyoshi Kuruma
Tatsuya Sawada
Shiro Fujitani
Kiyoshi Kuruma
Tatsuya Sawada