Packaged light detector semiconductor devices with non-imaging optical concentrators for ambient light and/or optical proxmity sensing, methods for manufacturing the same, and systems including the same
First Claim
1. A packaged light detector semiconductor device, comprising:
- a light detector die having a surface including an active photosensor region;
a non-imaging optical concentrator including an entrance aperture and an exit aperture axially aligned with one another and with the active photosensor region; and
a molding material that forms the non-imaging optical concentrator and encapsulates at least a portion of the surface of the light detector die that extends beyond the exit aperture of the non-imaging optical concentrator.
2 Assignments
0 Petitions
Accused Products
Abstract
Packaged light detector semiconductor devices (PLDSDs), methods for manufacturing PLDSDs, and systems including a PLDSD are described herein. In an embodiment, a PLDSD includes a light detector die having a surface including an active photosensor region, and a non-imaging optical concentrator including an entrance aperture and an exit aperture axially aligned with one another and with the active photosensor region. A molding material forms the non-imaging optical concentrator and encapsulates at least a portion of the surface of the light detector die that extends beyond the exit aperture of the non-imaging optical concentrator. The non-imaging optical concentrator concentrates light from the entrance aperture toward the exit aperture and onto the active photosensor region. In certain embodiments, a reflective material is disposed on an inner surface of the non-imaging optical concentrator, and a light transmissive molding material fills at least a portion of an inner volume of the non-imaging optical concentrator.
14 Citations
20 Claims
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1. A packaged light detector semiconductor device, comprising:
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a light detector die having a surface including an active photosensor region; a non-imaging optical concentrator including an entrance aperture and an exit aperture axially aligned with one another and with the active photosensor region; and a molding material that forms the non-imaging optical concentrator and encapsulates at least a portion of the surface of the light detector die that extends beyond the exit aperture of the non-imaging optical concentrator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for manufacturing a packaged light detector semiconductor device that comprises a light detector die having a surface including an active photosensor region, the method comprising:
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(a) molding, from a molding material, a non-imaging optical concentrator including an entrance aperture and an exit aperture axially aligned with one another and with the active photosensor region; and (b) encapsulating, with the molding material, at least a portion of the surface of the light detector die that extends beyond the exit aperture of the non-imaging optical concentrator. - View Dependent Claims (14, 15, 16, 17)
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18. A method for manufacturing a plurality of packaged light detector semiconductor devices each of which comprises a light detector die including at least one active photosensor region, the method comprising:
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(a) attaching each of a plurality of the light detector dies to a package substrate; (b) electrically connecting the light detector dies to package contacts of the package substrate; (c) molding, from a molding material, at least one non-imaging optical concentrator for each light detector die of the plurality of light detector dies, wherein each non-imaging optical concentrator includes an entrance aperture and an exit aperture axially aligned with one another and with an active photosensor region of one of the light detector dies; (d) depositing a reflective material on an inner surface of each of the non-imaging optical concentrators; (e) filling at least a portion of an inner volume of each of the non-imaging optical concentrators with a further molding material, wherein the further molding material is light transmissive; and (f) performing singulation to thereby separate the package substrate and molding material into a plurality of separate packaged light detector semiconductor devices each of which comprises one of the light detector dies and a corresponding non-imaging optical concentrator that is at least partially filled with the light transmissive further molding material.
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19. A system, comprising:
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a packaged light detector semiconductor device configured to produce an output signal indicative of detected light; and a subsystem that is at least one of enabled, disabled or adjusted in dependence on the output signal produced by the packaged light detector semiconductor device; wherein the packaged light detector semiconductor device includes a light detector die having a surface including an active photosensor region; a non-imaging optical concentrator including an entrance aperture and an exit aperture axially aligned with one another and with the active photosensor region; and a molding material that forms the non-imaging optical concentrator and encapsulates at least a portion of the surface of the light detector die that extends beyond the exit aperture of the non-imaging optical concentrator. - View Dependent Claims (20)
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Specification