Patent
Light emitting device
| العنوان: | Light emitting device |
|---|---|
| Patent Number: | 7,696,522 |
| تاريخ النشر: | April 13, 2010 |
| Appl. No: | 11/223431 |
| Application Filed: | September 08, 2005 |
| مستخلص: | A light emitting device including a light source and a light transforming 101 member containing a fluorescent substance for absorbing at least a part of a light emitted from the light source and for emitting a light having a different wavelength. The light source includes a plurality of semiconductor light emitting units 104, at least a part of which are covered with the light transforming member 101. A shielding member 102 between a first semiconductor light emitting unit 104a covered with the light transforming member 101 and a second semiconductor light emitting unit 104b which is adjacent to the semiconductor light emitting unit 104a. |
| Inventors: | Ono, Masato (Tokushima, JP); Sonobe, Shinya (Tokushima, JP); Ishida, Hiroyuki (Shizuoka, JP); Tokida, Tsukasa (Shizuoka, JP) |
| Assignees: | Koito Manufacturing Co., Ltd. (Tokyo, JP) |
| Claim: | 1. A light emitting device comprising: a plurality of semiconductor light emitting units each having a translucent substrate thereon, the semiconductor light emitting units configured to emit light, a plurality of light transforming members each containing a fluorescent substance and each disposed on a corresponding one of the semiconductor light emitting units so as to be in contact with the translucent substrate, wherein each of the light transforming members absorbs at least a part of the light emitted from the corresponding one of the semiconductor light emitting units so as to emit light having a different wavelength; and a shielding member including concave regions that conform with a shape of each semiconductor light emitting unit, wherein each semiconductor light unit is housed in a corresponding one of the concave regions such that the shielding member circumferentially surrounds each of the semiconductor light units. |
| Claim: | 2. The light emitting device according to claim 1 comprising a support substrate on which the semiconductor light emitting units are mounted, the semiconductor light emitting units having a pair of positive and negative electrodes on the same plane side and mounted such that the positive and negative electrodes are connected to a conductor wiring of the support substrate though a conductive member. |
| Claim: | 3. The light emitting device according to claim 1 , wherein the shielding member is disposed on or applied to a support substrate such that an upper surface thereof is higher than a light emitting surface of the semiconductor light emitting unit. |
| Claim: | 4. The light emitting device according to claim 1 , wherein the shielding member is disposed on or applied to a support substrate such that an upper surface thereof is provided on almost a level with a light emitting surface of the semiconductor light emitting unit. |
| Claim: | 5. The light emitting device according to claim 1 or 2 , wherein the shielding member includes an insulating member covering a side surface of the semiconductor light emitting unit and including a light reflecting layer on the insulating member. |
| Claim: | 6. The light emitting device according to claim 5 , wherein the shielding member includes a diffusing material in a resin material. |
| Claim: | 7. The light emitting device according to claim 1 or 2 , wherein the shielding member includes a diffusing material in a resin material. |
| Claim: | 8. The light emitting device according to claim 7 , wherein the diffusing material contains at least one material selected from the group consisting of barium sulfate, barium titanate, titanium oxide, aluminum oxide and silicon oxide. |
| Claim: | 9. The light emitting device according to claim 1 further comprising an antireflection film on the translucent substrate. |
| Claim: | 10. The light emitting device according to claim 1 wherein the translucent substrate of each light emitting unit is between an active layer of the corresponding light emitting unit and the corresponding light transforming member. |
| Claim: | 11. A light emitting device comprising: a plurality of semiconductor light emitting units each comprising: a translucent substrate having a first surface and a second surface opposite to the first surface; an active layer for emitting light on the first surface of the translucent substrate; an antireflection film on the translucent substrate; and a phosphor layer on the second surface of the translucent substrate, wherein the phosphor layer absorbs at least a part of the light emitted from the active layer so as to emit light having a different wavelength, wherein a light shielding film surrounds a side surface of each semiconductor light emitting unit. |
| Current U.S. Class: | 257/88 |
| Patent References Cited: | 2003/0160256 August 2003 Durocher et al. 2004-080046 March 2004 WO 98/05078 February 1998 |
| Assistant Examiner: | Ho, Anthony |
| Primary Examiner: | Parker, Kenneth A |
| Attorney, Agent or Firm: | Fish & Richardson P.C. |
| رقم الانضمام: | edspgr.07696522 |
| قاعدة البيانات: | USPTO Patent Grants |
| الوصف غير متاح. |