Title:
フリップ型発光ダイオードをもつ薄型バックライト
Document Type and Number:
Japanese Patent JP5733876
Kind Code:
B2
Abstract:
One or more LEDs are mounted within an LCD without the use of any printed circuit board (PCB), thus reducing the thickness of the LCD by about the thickness of the conventional PCB. In one embodiment, the LED and submount are mounted so that the submount is opposing the liquid crystal layer side of the LCD, so that the liquid crystal layers provide the mechanical support for the submount and LED die. The LED die (mounted on the submount) may be inserted into a cavity formed in the "top" surface of the light guide, and the top surface of the light guide is abutted against the liquid crystal layers. In such a configuration, the LED light source, including all supporting components, adds no thickness to the LCD. In another embodiment, on the "bottom" surface of the LCD opposing the LED die is an electrically switchable mirror that is either reflective or transparent. In its transparent state, the LED in the LCD may be used as a flash in a cell phone camera, while the LCD may be viewed to take the picture.
Inventors:
Gerald Harbors
Oleg Besh Chekin
Serge Beerhuizen
Oleg Besh Chekin
Serge Beerhuizen
Application Number:
JP2007248050A
Publication Date:
June 10, 2015
Filing Date:
August 27, 2007
Export Citation:
Assignee:
Philips Lumileds Lighting Company Limited Liability Company
International Classes:
F21V8/00; F21V7/00; F21V29/00; G02F1/13357
Domestic Patent References:
| JP5192087U | ||||
| JP20046193A | ||||
| JP2002182205A | ||||
| JP2005283825A | ||||
| JP200666171A | ||||
| JP200526101A | ||||
| JP2005251687A | ||||
| JP2004355889A | ||||
| JP2003281912A | ||||
| JP200846430A |
Foreign References:
| US20050254258 | ||||
| US20060072315 | ||||
| US6065845 |
Attorney, Agent or Firm:
Patent Services Corporation m&s Partners