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US4894707A
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Semiconductor device having a light transparent window and a method of producing same
Assignee: Mitsubishi Electric Corp
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Filing: 1988-02-12
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Granted: 1990-01-16
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Expires: 2008-02-12
Abstract
Abstract A semiconductor device having a light transparent window includes: a wall produced at an outer contour of a light receiving section on the surface of a semiconductor chip, the molding resin which is produced after a process of inserting the chip in a metal mold. The wall and the metal mold adhere with each other for producing a space between the chip and the metal mold so that a light transparent window is produced at a light introduction section in a separate position from the wall above the chip.
Inventors
- 👤 Masao Yamawaki
- 👤 Takashi Kondo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:07
CPC Classifications
H; H10; H10F; H10F77/00; H10F77/50; H10W; H10W74/00; H10W74/10; H10W90/00; H10W90/701; H10W90/751; H10W90/756
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
127 words
A semiconductor device having a light transparent window, comprising: a semiconductor chip having a light receiving section formed on a portion of a first surface of said semiconductor chip; a wall disposed on said first surface of said semiconductor chip surrounding said light receiving section; a molding resin formed to predetermined dimensions over the surfaces of said semiconductor chip excluding said portion of said first surface having said light receiving section formed thereon for forming an opening in said molding resin to said light receiving section; and a light introduction section formed by attaching the light transparent window to said molding resin over said opening, said semiconductor chip being separated from the light transparent window by a distance determined by said predetermined dimensions of said molding resin.
Claim 2
Dependent Claim
127 words
A semiconductor device having a light transparent window, comprising: a semiconductor chip having a light receiving section formed on a portion of a first surface of said semiconductor chip; a wall disposed on said first surface of said semiconductor chip surrounding said light receiving section; a molding resin formed to predetermined dimensions over the surfaces of said semiconductor chip excluding said portion of said first surface having said light receiving section formed thereon for forming an opening in said molding resin to said light receiving section; and a light introduction section formed by attaching the light transparent window to said molding resin over said opening, said semiconductor chip being separated from the light transparent window by a distance determined by said predetermined dimensions of said molding resin.
Claim 3
Dependent Claim
30 words
A semiconductor device having a light transparent window as defined in claim 1, wherein said distance between said semiconductor chip and said light transparent window is greater than 100 μm.
Claim 4
Independent Claim
163 words
A method of producing a semiconductor device having a light transparent window, comprising the steps of: forming a light receiving section on a first surface of a semiconductor chip; disposing a wall on said first surface of said semiconductor chip surrounding said light receiving section; inserting said semiconductor chip in a metal mold so that said wall adheres to said metal mold, said metal mold having an injection aperture; injecting a molding resin into an injection aperture of said metal mold so that an opening in said molding resin is formed between said semiconductor chip and said metal mold; removing said metal mold so that a package of said molding resin is formed having said opening around said wall of said semiconductor chip; and attaching a light transparent window to said molding resin over said opening to form a light introduction section, said semiconductor chip being separated from the light transparent window by a distance determined by the dimensions of said metal mold.
Claim 5
Independent Claim
163 words
A method of producing a semiconductor device having a light transparent window, comprising the steps of: forming a light receiving section on a first surface of a semiconductor chip; disposing a wall on said first surface of said semiconductor chip surrounding said light receiving section; inserting said semiconductor chip in a metal mold so that said wall adheres to said metal mold, said metal mold having an injection aperture; injecting a molding resin into an injection aperture of said metal mold so that an opening in said molding resin is formed between said semiconductor chip and said metal mold; removing said metal mold so that a package of said molding resin is formed having said opening around said wall of said semiconductor chip; and attaching a light transparent window to said molding resin over said opening to form a light introduction section, said semiconductor chip being separated from the light transparent window by a distance determined by the dimensions of said metal mold.
Claim 6
Dependent Claim
40 words
A method of producing a semiconductor device having a light transparent window as defined in claim 3, wherein said metal mold includes means for forming a step in a portion of said molding resin for receiving said light transparent window.
Claim 7
Dependent Claim
26 words
A method of producing a semiconductor device as defined in claim 3, wherein said wall is disposed on said first surface by a screen printing process.
Claim 8
Dependent Claim
36 words
A method of producing a semiconductor device as defined in claim 3, wherein said metal mold comprises an extension having a length greater than 100 μm for forming said opening when said molding resin is introduced.
Claim 9
Dependent Claim
22 words
A semiconductor device having a light transparent window as defined in claim 1, wherein the light transparent window comprises a glass material.
Claim 10
Dependent Claim
32 words
A semiconductor device having a light transparent window as defined in claim 1, wherein said molding resin comprises a step in an area surrounding said opening for receiving said light transparent window.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-01-15 | 1993-07-17 | 1994-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-15 | 1997-07-17 | 1998-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-15 | 2001-07-17 | 2002-01-16 | $7700.00 | Window Closed / Lapsed |