US5079190A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of eliminating uneven refractive index in resin of a resin encapsulated photoelectric converting device
Assignee: Canon Inc
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Filing: 1989-02-09
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Granted: 1992-01-07
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Expires: 2009-02-09
Abstract
Abstract A method for producing a resin-sealed photoelectric converting device which eliminates the problem of uneven resin refractive index produced when the resin is injected past the lead wires and over the light receiving elements. The photoelectric converting device has a photoelectric converting element, and wires for electrically connecting electrodes of the photoelectric converting element with lead electrodes. A transparent portion is present on the light receiving portion of the photoelectric converting element. The method includes the steps of placing the photoelectric converting element and the lead electrodes in a mold cavity having a resin-injecting gate; and injecting resin from the gate and guiding the injected resin which bypasses said wires to an area away from the photoelectric converting portion, and sealing the entire photoelectric converting element with the injected resin. Since the resin which bypasses the wires does not cover the light receiving portion, any unevenness in the resin will not produce an uneven refractive index over the light receiving portion.
Inventors
- 👤 Akio Mihara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:51
CPC Classifications
H; H10; H10F; H10F77/00; H10F77/93; H10F77/40; H10F77/407; H10W; H10W72/00; H10W72/071; H10W72/075; H10W72/07551; H10W72/07554; H10W72/50; H10W72/541; H10W72/547; H10W72/5473; H10W72/551; H10W72/552; H10W72/5522; H10W72/851; H10W72/874; H10W72/884; H10W72/90; H10W72/931; H10W72/932; H10W72/951; H10W72/952; H10W74/00; H10W90/00; H10W90/701; H10W90/751; H10W90/756
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
104 words
A method for producing a resin-sealed photoelectric converting device having (1) a photoelectric converting element, and (2) wires for electrically connecting electrodes of the photoelectric converting element with lead electrodes, a transparent portion being present on a photoelectric converting portion of said photoelectric converting element, said method comprising steps of: placing said photoelectric converting element and said lead electrodes in a mold cavity having a gate for injecting resin; and injecting resin from said gate and guiding the injected resin which bypasses said wires to an area away from said photoelectric converting portion, and sealing the entire photoelectric converting element with the injected resin.
Claim 2
Independent Claim
104 words
A method for producing a resin-sealed photoelectric converting device having (1) a photoelectric converting element, and (2) wires for electrically connecting electrodes of the photoelectric converting element with lead electrodes, a transparent portion being present on a photoelectric converting portion of said photoelectric converting element, said method comprising steps of: placing said photoelectric converting element and said lead electrodes in a mold cavity having a gate for injecting resin; and injecting resin from said gate and guiding the injected resin which bypasses said wires to an area away from said photoelectric converting portion, and sealing the entire photoelectric converting element with the injected resin.
Claim 3
Dependent Claim
33 words
A method according to claim 1, wherein the gate is positioned at the approximate center of a side of said photoelectric converting element not provided with said element electrodes connected to said wires.
Claim 4
Dependent Claim
40 words
A method according to claim 2, wherein air vents for eliminating the air from the mold cavity are provided at an opposite side of the cavity from said side of said photoelectric converting element not provided with said element electrodes.
Claim 5
Dependent Claim
27 words
A method according to claim 2, wherein air vents for eliminating the air from the mold are provided at left and right lateral sides of said mold.
Claim 6
Dependent Claim
24 words
A method according to claim 4, wherein said air vents are provided at said left and right lateral sides substantially adjacent said injecting gate.
Claim 7
Dependent Claim
44 words
A method according to claim 5, wherein the position of said air vents satisfies a relation: 3m≦l wherein l is the length of one said lateral side, and m is a distance to one said air vent along said left or right lateral sides.
Claim 8
Dependent Claim
36 words
A method according to claim 5, wherein the position of said air vents satisfies a relation 2m≦n wherein n is the length of said cavity in a direction perpendicular to said left and right lateral sides.
Claim 9
Dependent Claim
36 words
A method according to claim 6, wherein the position of said air vents satisfies a relation 2m≦n wherein n is the length of said cavity in a direction perpendicular to said left and right lateral sides.
Claim 10
Dependent Claim
39 words
A method according to claim 1, wherein said injecting gate is formed in a position corresponding to a corner of two neighboring sides of said photoelectric converting element, said two neighboring sides not having electrodes connected to the wires.
Claim 11
Dependent Claim
12 words
A method according to claim 9, wherein plural injecting gates are provided.
Claim 12
Dependent Claim
16 words
A method according to claim 1, wherein said resin is injected by a transfer molding method.
Claim 13
Dependent Claim
15 words
A method according to claim 1, wherein said resin is injected by a casting method.
Claim 14
Dependent Claim
24 words
A method according to claim 1, wherein a face of said photoelectric converting element bearing said photoelectric converting portion is substantially circular or oval.
Claim 15
Dependent Claim
24 words
A method according to claim 1, wherein a face of said photoelectric converting element bearing said photoelectric converting portion is substantially circular or oval.
Claim 16
Independent Claim
89 words
A method for producing a resin-sealed photoelectric converting device having (1) a photoelectric converting element, and (2) wires for electrically connecting electrodes of said photoelectric converting element with lead electrodes, a transparent portion being present on a photoelectric converting portion of said photoelectric converting element, said method comprising the steps of: placing said wires so that they are not between a gate for injecting resin and said photoelectric converting portion; and sealing said device and the entire photoelectric converting element with resin by injecting the resin through said gate.
Claim 17
Independent Claim
89 words
A method for producing a resin-sealed photoelectric converting device having (1) a photoelectric converting element, and (2) wires for electrically connecting electrodes of said photoelectric converting element with lead electrodes, a transparent portion being present on a photoelectric converting portion of said photoelectric converting element, said method comprising the steps of: placing said wires so that they are not between a gate for injecting resin and said photoelectric converting portion; and sealing said device and the entire photoelectric converting element with resin by injecting the resin through said gate.
Claim 18
Dependent Claim
12 words
A photoelectric converting device produced according to the method of claim 1.
Claim 19
Dependent Claim
14 words
A photoelectric converting device according to claim 16, wherein said device comprises a photosensor.
Claim 20
Dependent Claim
15 words
A photoelectric converting device according to claim 16, wherein said device comprises a light-emitting device.
Claim 21
Dependent Claim
12 words
A photoelectric converting device produced according to the method of claim 15.
Claim 22
Dependent Claim
14 words
A photoelectric converting device according to claim 19, wherein said device comprises a photosensor.
Claim 23
Dependent Claim
15 words
A photoelectric converting device according to claim 19, wherein said device comprises a light-emitting device.
Claim 24
Independent Claim
102 words
A method for producing a resin-sealed photoelectric converting device having (1) a photoelectric converting element, and (2) a bonding portion for electrically connecting electrodes of said photoelectric converting element with lead electrodes, a transparent portion being present on a photoelectric converting portion of said photoelectric converting element, said method comprising the steps of: pressure fixing said photoelectric converting element electrodes and said lead electrodes through bumps; placing said photoelectric converting element and said lead electrodes in a cavity provided with a gate for injecting resin; and injecting resin from said injecting gate thereby effecting resin sealing of the entire photoelectric converting portion.
Claim 25
Independent Claim
102 words
A method for producing a resin-sealed photoelectric converting device having (1) a photoelectric converting element, and (2) a bonding portion for electrically connecting electrodes of said photoelectric converting element with lead electrodes, a transparent portion being present on a photoelectric converting portion of said photoelectric converting element, said method comprising the steps of: pressure fixing said photoelectric converting element electrodes and said lead electrodes through bumps; placing said photoelectric converting element and said lead electrodes in a cavity provided with a gate for injecting resin; and injecting resin from said injecting gate thereby effecting resin sealing of the entire photoelectric converting portion.
Claim 26
Dependent Claim
21 words
A method according to claim 22, wherein the thickness of said lead electrodes substantially equal to or less than 0.1 mm.
Claim 27
Dependent Claim
24 words
A method according to claim 22, wherein said at least one of said lead electrodes has a bent portion away from said bonding portion.
Claim 28
Dependent Claim
25 words
A method according to claim 24, wherein the angle of said bent portion is equal to or larger than 160° and is smaller than 180°.
Claim 29
Dependent Claim
22 words
A method according to claim 22, wherein said lead electrode has an inclination not exceeding 20° with respect to said bonding portion.
References Cited (Backward Citations)
US4063993A
Cited
JPS5984448A
Cited
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