Title:
LIGHTING DEVICE AND DISPLAY DEVICE USING SAME
Document Type and Number:
WIPO Patent Application WO/2006/112459
Kind Code:
A1
Abstract:
A lighting device is provided with LED lines (LL1-LLn) for lighting a panel (3); a light quantity control section (12) for separately controlling emission quantity of each LED line; light sensors (4a-4d) for detecting each quantity of light applied to each section of the panel (3); a light quantity judging section (6) for judging the relative relationship of the detected quantity of light applied to each section of the panel (3); and a memory section (7) for storing information relating to an emission quantity change of each LED line and a quantity change of the light applied to each section of the panel (3). The light quantity control section (12) monitors judgment results of the light quantity judging section (6), and separately controls the emission quantity of each LED line, based on the related information, so that the quantities of light applied to each section of the panel (3) are uniform. Thus, light quantity nonuniformity is reduced at the time of lighting an object to be lighted by a plurality of light emitting means.
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Inventors:
NAKAO SHIGEHARU (JP)
Application Number:
PCT/JP2006/308142
Publication Date:
October 26, 2006
Filing Date:
April 18, 2006
Export Citation:
Assignee:
ROHM CO LTD (JP)
NAKAO SHIGEHARU (JP)
NAKAO SHIGEHARU (JP)
International Classes:
H05B37/02; G02F1/13357; H01L33/00
Foreign References:
| JP2005091526A | 2005-04-07 | |||
| JP2004363061A | 2004-12-24 | |||
| JPH01146248U | 1989-10-09 | |||
| JP2001066569A | 2001-03-16 | |||
| JP2004029141A | 2004-01-29 |
Attorney, Agent or Firm:
Sano, Shizuo (Tenmabashi-Kyomachi Chuo-K, Osaka-Shi Osaka32, JP)
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