US6310364B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-emitting apparatus
Assignee: Toyoda Gosei Co Ltd
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Filing: 1999-08-03
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Granted: 2001-10-30
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Expires: 2019-08-03
Abstract
Abstract A transparent base having a GaN semiconductor light-emitting device fixed thereon with a transparent adhesive is fitted to lead frames by flip chip bonding in such a manner that the light from the device is emitted outside through the substrate of the device, the adhesive, the base, and a sealing resin in this order. The apparatus has high relaibility beacause the sealing resin in the dominant direction or light emission is protected against color change due to the heat generated from the device.
Inventors
- 👤 Toshiya Uemura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:03
CPC Classifications
H; H10; H10H; H10H20/00; H10H20/80; H10H20/85; H10H20/857; H10H20/851; H10H20/8515; H10H20/8514; H10W; H10W72/00; H10W72/071; H10W72/075; H10W72/07551; H10W72/07554; H10W72/50; H10W72/541; H10W72/547; H10W72/851; H10W72/874; H10W72/884; H10W90/00; H10W90/701; H10W90/751; H10W90/754
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
149 words
A light-emitting apparatus comprising: a transparent base made of an inorganic material; a first and a second bonding pad formed on the base; a GaN semiconductor light-emitting device having a transparent substrate, a first and a second electrode on one side thereof; a first and a second wire which connect said first bonding pad to said first electrode and said second bonding pad to said second electrode, respectively; a first and a second lead frame to which said trasparent base is fixed so that the substrate of said semiconductor light-emitting device faces the dominant light emitting direction of said light-emitting apparatus, and said first and second bonding pads being electrically connected to said first and second lead frames, respectively; and a transparent adhesive layer which fixes the transparent substrate of said semiconductor light-emitting device, said first and second wires, said first and second lead frames, and said adhesive layer.
Claim 2
Dependent Claim
149 words
A light-emitting apparatus comprising: a transparent base made of an inorganic material; a first and a second bonding pad formed on the base; a GaN semiconductor light-emitting device having a transparent substrate, a first and a second electrode on one side thereof; a first and a second wire which connect said first bonding pad to said first electrode and said second bonding pad to said second electrode, respectively; a first and a second lead frame to which said trasparent base is fixed so that the substrate of said semiconductor light-emitting device faces the dominant light emitting direction of said light-emitting apparatus, and said first and second bonding pads being electrically connected to said first and second lead frames, respectively; and a transparent adhesive layer which fixes the transparent substrate of said semiconductor light-emitting device, said first and second wires, said first and second lead frames, and said adhesive layer.
Claim 3
Dependent Claim
84 words
A light-emitting apparatus according to claim 1 , wherein said first bonding pad and said second bonding pad are provided on said first surface of said base, said first lead frame has a first mount facing said dominant light emitting direction, said second lead frame has a second mount facing said dominant light emitting direction, said first bonding pad is fixed onto said first mount with an electrical connection, and said second bonding pad is fixed onto said second mount with an electrical connection.
Claim 4
Dependent Claim
24 words
A light-emitting apparatus according to claim 1 , wherein each of said first and second electrodes is a light-reflecting and eletrically conducting metal layer.
Claim 5
Dependent Claim
28 words
A light-emitting apparatus according to claim 1 , wherein said base is made of material selected from the group consisting of a SiO 2 sapphire and borosilicate glass.
Claim 6
Dependent Claim
29 words
A light-emitting apparatus according to claim 2 , wherein said base is made of a material selected from the group consisting of a SiO 2 sapphire and borosilicate glass.
Claim 7
Dependent Claim
30 words
A light-emitting apparatus according to claim 3 , wherein said base is made of a material selected from the group consisting of a SiO 2 , sapphire and borosilicate glass.
Claim 8
Dependent Claim
30 words
A light-emitting apparatus according to claim 2 , wherein said GaN semiconductor light-emitting device is fixed on said first surface of said base between said first and second bonding pads.
Claim 9
Dependent Claim
17 words
A light-emitting apparatus according to claim 7 , wherein said base is rectangular in its plane view.
Claim 10
Dependent Claim
28 words
A light-emitting apparatus according to claim 7 , wherein said first and second bonding pads are formed substantially in parallel with the long side of said first surface.
Claim 11
Dependent Claim
21 words
light-emitting apparatus according to any one of claims 1 to 9 , wherein said base has dispersed therein a fluorescent material.
Claim 12
Dependent Claim
34 words
A light-emitting apparatus according to any one of claims 1 to 9 , wherein said base is defined by a plurality of layers, and at least one of said layers contains a fluorescent material.
Claim 13
Dependent Claim
29 words
A light-emitting apparatus according to claim 10 , wherein said base is defined by a plurality of layers, and at least one of said layers contains a fluorescent material.
Claim 14
Dependent Claim
28 words
A light-emitting apparatus according to claim 1 , wherein the first and second bonding pads are formed on a diagonal line of the first surface of the base.
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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) | 2004-10-29 | 2005-04-30 | 2005-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-10-29 | 2009-04-30 | 2009-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-10-29 | 2013-04-30 | 2013-10-30 | $7700.00 | Window Closed / Lapsed |