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公开(公告)号:JP3968323B2
公开(公告)日:2007-08-29
申请号:JP2003122655
申请日:2003-04-25
Applicant: トヨタ自動車株式会社 , 株式会社豊田中央研究所
IPC: G02B6/28
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公开(公告)号:JP4579283B2
公开(公告)日:2010-11-10
申请号:JP2007300861
申请日:2007-11-20
Applicant: トヨタ自動車株式会社 , 学校法人トヨタ学園 , 日立電線株式会社 , 株式会社豊田中央研究所
CPC classification number: H01S3/06708 , H01S3/06745 , H01S3/094003 , H01S3/0941
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公开(公告)号:JP5494622B2
公开(公告)日:2014-05-21
申请号:JP2011251261
申请日:2011-11-17
Applicant: 株式会社豊田中央研究所
IPC: H01L29/812 , H01L21/336 , H01L21/337 , H01L21/338 , H01L29/41 , H01L29/778 , H01L29/78 , H01L29/808
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公开(公告)号:JP5210109B2
公开(公告)日:2013-06-12
申请号:JP2008255115
申请日:2008-09-30
Applicant: 豊田合成株式会社 , 株式会社豊田中央研究所
CPC classification number: H01L33/58
Abstract: PROBLEM TO BE SOLVED: To provide an LED light-emitting device capable of easily controlling the outer appearance color of a phosphor layer when light is turned off. SOLUTION: The phosphor layer 13 of the LED light-emitting device 1 has a structure in which a yellow phosphor layer 13a, a red phosphor layer 13b and a blue phosphor layer 13c are sequentially laminated from the side near an LED 10. The thickness and the phosphor concentration of the blue phosphor layer 13c are each set at a value at which when the yellow phosphor layer 13a and the red phosphor layer 13b are excited by an outside light and emit a yellow light and a red light, respectively, the yellow light and the red light do not pass through the blue phosphor layer 43b. As the result, the outer appearance color of the phosphor layer 13 when the LED light-emitting device 1 is lighted off is white as the outer appearance color of the blue phosphor layer 13c. Since the LED light-emitting device 1 emits a white color light and this color matches the outer appearance color of the phosphor layer 13 when light is turned off, the outer appearance quality is high. COPYRIGHT: (C)2010,JPO&INPIT
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公开(公告)号:JP3932982B2
公开(公告)日:2007-06-20
申请号:JP2002155318
申请日:2002-05-29
Applicant: 株式会社豊田中央研究所
CPC classification number: G02B6/1228 , G02B6/125 , G02B6/2808 , G02B6/4249 , H01S3/005 , H01S3/2383 , H01S5/4012 , H01S5/4025
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公开(公告)号:JP4452296B2
公开(公告)日:2010-04-21
申请号:JP2007214652
申请日:2007-08-21
Applicant: トヨタ自動車株式会社 , 学校法人トヨタ学園 , 日立電線株式会社
CPC classification number: G02B6/4204 , G02B6/4296 , H01S3/06729 , H01S3/06754 , H01S3/094019 , H01S3/094057 , H01S3/09415
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