US5222175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical integrated light receiving apparatus
Assignee: Sumitomo Electric Industries Ltd
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Filing: 1992-07-09
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Granted: 1993-06-22
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Expires: 2012-07-09
Abstract
Abstract The light-receiving apparatus according to this invention comprises first and second package bodies. The first package body positions an optical fiber and integrally holds the optical fiber while the exit end face of the optical fiber is exposed to on outside. The second package body includes a first substrate having a lower surface on which a light-receiving portion for receiving transmission light from the optical fiber and outputting an electrical signal and first electrodes, connected to the light-receiving portions, for extracting the electrical signal are formed, and a second substrate, having second electrodes connected to the first electrodes and third electrodes connected to external leads, the second electrodes being formed on an inclined surface of a V-shaped groove of the second substrate, and the third electrodes being formed in the second substrate, and the second package body integrally holds the first and second substrates while the first substrate is held in the V-shaped groove of the second substrate and the first and second electrodes are connected to each other.
Inventors
- 👤 Nokuyoshi Tatoh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:55
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/42; G02B6/4201; G02B6/4249; G02B6/4204; G02B6/4292
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
158 words
A light-receiving apparatus comprising: a first package body for positioning an optical fiber and integrally holding said optical fiber while an exit end face of said optical fiber is exposed to an outside, and a second package body, including a first substrate having a lower surface on which a light-receiving portion for receiving transmission light from said optical fiber and outputting an electrical signal and first electrodes, connected to said light-receiving portion, for extracting the electrical signal are formed, and a second substrate, having second electrodes connected to said first electrodes and third electrodes connected to external leads, said second electrodes being formed on an inclined surface of a V-shaped groove of said second substrate, and said third electrodes being formed on said second substrate, for integrally holding said first and second substrates while said first substrate is held in the V-shaped groove of said second substrate and said first and second electrodes are connected to each other.
Claim 2
Dependent Claim
158 words
A light-receiving apparatus comprising: a first package body for positioning an optical fiber and integrally holding said optical fiber while an exit end face of said optical fiber is exposed to an outside, and a second package body, including a first substrate having a lower surface on which a light-receiving portion for receiving transmission light from said optical fiber and outputting an electrical signal and first electrodes, connected to said light-receiving portion, for extracting the electrical signal are formed, and a second substrate, having second electrodes connected to said first electrodes and third electrodes connected to external leads, said second electrodes being formed on an inclined surface of a V-shaped groove of said second substrate, and said third electrodes being formed on said second substrate, for integrally holding said first and second substrates while said first substrate is held in the V-shaped groove of said second substrate and said first and second electrodes are connected to each other.
Claim 3
Dependent Claim
31 words
A light-receiving apparatus according to claim 1, characterized in that said first substrate is constituted by a rectangular semiconductor chip, and the V-shaped groove has a vertical angle of almost 90°.
Claim 4
Dependent Claim
42 words
A light-receiving apparatus according to claim 1, wherein a pair of guide grooves are formed in said first package body and a pair of guide pins to be inserted in the guide grooves project from corresponding positions of said second package body.
Claim 5
Dependent Claim
39 words
A light-receiving apparatus according to claim 1, characterized in that said first package body holds a plurality of optical fibers substantially linearly, and said second package body comprises light-receiving portions corresponding in number to said plurality of optical fibers.
Claim 6
Dependent Claim
21 words
A light-receiving apparatus according to claim 4, wherein said plurality of optical fibers extend from a tape-shaped optical fiber cable conductor.
Claim 7
Dependent Claim
30 words
A light-receiving apparatus according to claim 1, wherein said first package body includes two substrates, and said optical fiber is positioned in said first package body by said two substrates.
Claim 8
Dependent Claim
25 words
A light-receiving apparatus according to claim 1, characterized in that the V-shaped groove of said second substrate is formed by grinding with a dicing blade.
Claim 9
Dependent Claim
37 words
A light-receiving apparatus according to claim 2, wherein said semiconductor chip is made of a material that transmits light transmitted through said optical fiber, and a lens portion is formed on a surface of said semiconductor chip.
Claim 10
Dependent Claim
188 words
A light-receiving apparatus comprising a first package body, having a pair of substrates for clamping an optical fiber that transmits an optical signal, for integrally holding said pair of substrates and said optical fiber with a resin material while an exit end face of said optical fiber is exposed to an outside, and a second package body for integrally holding first and second substrates with a resin material, said first substrate being made of said material that transmits an optical signal and having an upper surface on which a lens portion for receiving the optical signal from said optical fiber is formed, and a lower surface on which a light-receiving portion for converting the optical signal to an electric signal and first electrodes connected to said light-receiving portion are formed, and said second substrate placing said first substrate thereon and having an upper surface on which a V-shaped groove and a flat portion are formed, the V-shaped groove having second electrodes connected to said first electrodes, and said flat portion being formed in the vicinity of the V-shaped groove and having third electrodes connected to said second electrodes.
Claim 11
Dependent Claim
188 words
A light-receiving apparatus comprising a first package body, having a pair of substrates for clamping an optical fiber that transmits an optical signal, for integrally holding said pair of substrates and said optical fiber with a resin material while an exit end face of said optical fiber is exposed to an outside, and a second package body for integrally holding first and second substrates with a resin material, said first substrate being made of said material that transmits an optical signal and having an upper surface on which a lens portion for receiving the optical signal from said optical fiber is formed, and a lower surface on which a light-receiving portion for converting the optical signal to an electric signal and first electrodes connected to said light-receiving portion are formed, and said second substrate placing said first substrate thereon and having an upper surface on which a V-shaped groove and a flat portion are formed, the V-shaped groove having second electrodes connected to said first electrodes, and said flat portion being formed in the vicinity of the V-shaped groove and having third electrodes connected to said second electrodes.
Claim 12
Dependent Claim
26 words
A light-receiving apparatus according to claim 9, characterized in that a receiving circuit connected to said second and third electrodes is formed in said flat portion.
Claim 13
Dependent Claim
34 words
A light-receiving apparatus according to claim 1, characterized in that said second substrate is mounted on an island portion of a lead frame and said external leads constitute a part of said external leads.
Claim 14
Dependent Claim
25 words
A light-receiving apparatus according to claim 1 wherein said light receiving portion has comb-shaped electrodes and said first electrodes are connected to said comb-shaped electrodes.
Claim 15
Dependent Claim
17 words
A light-receiving apparatus according to claim 1, characterized in that said light-receiving portion is a photoconductive cell.
Claim 16
Dependent Claim
20 words
A light-receiving apparatus according to claim 1, characterized in that said light-receiving portion is a photodiode having an metal-semiconductor-metal structure.
Claim 17
Dependent Claim
46 words
A light-receiving apparatus according to claim 1, wherein said second substrate has a flat portion, said flat portion having said third electrodes formed thereon, and further comprising a third substrate for clamping end portions of said external leads on said third electrodes of said second substrate.
Claim 18
Dependent Claim
37 words
A light-receiving apparatus according to claim 15, wherein an electronic circuit component is mounted on said flat portion and a groove for storing said electronic circuit component is formed in a lower surface of said third substrate.
Claim 19
Dependent Claim
32 words
A light-receiving apparatus according to claim 15, characterized in that a groove is formed in an end portion of said third substrate to hold said end portions of said external leads therein.
Claim 20
Dependent Claim
22 words
A light-receiving apparatus according to claim 17, characterized in that said end portions of said external leads are plated with a metal.
References Cited (Backward Citations)
US4092061A
Cited
EP0061772A1
Cited
US4730198A
Cited
US4772787A
Cited
DE3508627A1
Cited
GB2173917A
Cited
US4802727A
Cited
US4826272A
Cited
US4787696A
Cited
EP0331332A2
Cited
US4871224A
Cited
US5073003A
Cited
US4969712A
Cited
EP0413489A2
Cited
US4995695A
Cited
US5125054A
Cited
US5170448A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-06-21 | 1996-12-21 | 1997-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-06-21 | 2000-12-21 | 2001-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-06-21 | 2004-12-21 | 2005-06-22 | $7700.00 | Window Closed / Lapsed |