US6914267B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light emitting diode
Assignee: Citizen Electronics Co Ltd
•
Filing: 2004-04-06
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Granted: 2005-07-05
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Expires: 2024-04-06
Abstract
Abstract A light emitting diode comprising a light emitting diode element 20 mounted on a glass epoxy substrate 12, this light emitting diode element 20 being protected at its surface side by a resin seal member 33, in which: a light emitting diode element for blue luminescence, formed of gallium nitride type compound semiconductor is used as the above-mentioned light emitting diode element 20; and a fluorescent material containing layer 21 composed of a fluorescent material containing layer 21 composed of a fluorescent material dispersed into an adhesive is arranged on the back side of this light emitting diode element. On the back side of the light emitting diode element 20, blue luminescence is converted in wavelength to produce white luminescence of high intensity.
Inventors
- 👤 Koichi Fukasawa
- 👤 Junji Miyashita
- 👤 Kousuke Tsuchiya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:12
CPC Classifications
H; H10; H10H; H10H20/00; H10H20/80; H10H20/85; H10H20/851; H10H20/8516; H10H20/8506; H10W; H10W72/00; H10W72/30; H10W72/071; H10W72/073; H10W72/075; H10W72/07551; H10W72/07554; H10W72/50; H10W72/541; H10W72/547; H10W72/851; H10W72/874; H10W72/884; H10W74/00; H10W90/00; H10W90/701; H10W90/731; H10W90/734; H10W90/751; H10W90/754; H10W90/756
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
135 words
A light emitting diode comprising: A base; A thin plate-like electrode mounted on the upper surface of the base; A light emitting diode element fixed to the top surface of the thin plate-like electrode by an adhesive containing fluorescent material; A resin seal member for sealing the upper surface of the light emitting diode element; and A recess formed by a portion of the upper surface of the base and by a hole provided in the thin plate-like electrode, said hole having a shape smaller than the shape of the bottom surface of the light emitting diode element; Wherein the adhesive is filled into the recess and the bottom surface of the light emitting diode element is disposed on the adhesive so that the light emitting diode element is fixed to the thin plate-like electrode.
Claim 2
Dependent Claim
135 words
A light emitting diode comprising: A base; A thin plate-like electrode mounted on the upper surface of the base; A light emitting diode element fixed to the top surface of the thin plate-like electrode by an adhesive containing fluorescent material; A resin seal member for sealing the upper surface of the light emitting diode element; and A recess formed by a portion of the upper surface of the base and by a hole provided in the thin plate-like electrode, said hole having a shape smaller than the shape of the bottom surface of the light emitting diode element; Wherein the adhesive is filled into the recess and the bottom surface of the light emitting diode element is disposed on the adhesive so that the light emitting diode element is fixed to the thin plate-like electrode.
Claim 3
Dependent Claim
63 words
The light emitting diode according to claim 1 wherein a portion in which there is an overlap between the peripheral portion of the hole provided in the thin plate-like electrode and the outer peripheral portion of the bottom surface of the light emitting diode element disposed above the hole forms a reflecting surface of the bottom surface of the light emitting diode element.
Claim 4
Dependent Claim
128 words
The light emitting diode according to claim 1 wherein more than two light emitting diode elements are positioned on the base; At least one of the plurality of light emitting diode elements being a blue light emitting diode element made of gallium nitride semiconductor or a silicon carbide semiconductor; A recess formed by a portion of the upper surface of the base and by a hole provided in the thin plate-like electrode facing the bottom surface of the blue light emitting diode element, said hole having a shape smaller than the shape of the bottom surface of the blue light emitting diode element; Wherein the adhesive containing fluorescent material is filled into the recess and the blue light emitting diode element is disposed on the adhesive and fixed.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2008-07-04 | 2009-01-03 | 2009-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2012-07-04 | 2013-01-03 | 2013-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2016-07-04 | 2017-01-03 | 2017-07-05 | $7700.00 | Window Closed / Lapsed |