Image sensor device and method of forming same
First Claim
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1. An image sensor device, comprising:
- a conductive re-routing layer;
a first semiconductor substrate arranged over the conductive re-routing layer, the first semiconductor substrate including a first portion with a via opening therein and a second portion that exhibits an absence of a via opening;
a conductive material arranged in the via opening in the first portion of the first semiconductor substrate;
a conductive layer arranged over the first semiconductor substrate and over the conductive material, wherein the conductive material electrically couples the conductive layer to the conductive re-routing layer;
an interconnect structure arranged over the conductive layer, wherein the interconnect structure includes at least two metal layers separated from each other by a dielectric material; and
a second semiconductor substrate arranged over the interconnect structure, the second semiconductor substrate including a pixel region arranged over the first portion of the first semiconductor substrate and a circuit region arranged over the second portion of the first semiconductor substrate.
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Abstract
An image sensor device includes a first substrate, an interconnect structure, a conductive layer, a conductive via and a second substrate. The first substrate includes a first region including a pixel array and a second region including a circuit. The interconnect structure is over the pixel array or the circuit. The interconnect structure electrically connecting the circuit to the pixel array. The conductive layer is on the interconnect structure. The conductive via passes through the second substrate and at least partially embedded in the conductive layer. The second substrate is over the conductive layer.
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Citations
20 Claims
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1. An image sensor device, comprising:
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a conductive re-routing layer; a first semiconductor substrate arranged over the conductive re-routing layer, the first semiconductor substrate including a first portion with a via opening therein and a second portion that exhibits an absence of a via opening; a conductive material arranged in the via opening in the first portion of the first semiconductor substrate; a conductive layer arranged over the first semiconductor substrate and over the conductive material, wherein the conductive material electrically couples the conductive layer to the conductive re-routing layer; an interconnect structure arranged over the conductive layer, wherein the interconnect structure includes at least two metal layers separated from each other by a dielectric material; and a second semiconductor substrate arranged over the interconnect structure, the second semiconductor substrate including a pixel region arranged over the first portion of the first semiconductor substrate and a circuit region arranged over the second portion of the first semiconductor substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 20)
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10. An image sensor device, comprising:
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a first substrate including a pixel region and a circuit region; an interconnect structure arranged over the first substrate, the interconnect structure including plurality of metal layers stacked over one another and extending over the pixel region and the circuit region; a conductive layer arranged over the interconnect structure, the conductive layer including a solid layer of conductive material which extends over the pixel region and circuit region without any through-holes over the pixel region or over the circuit region; a second substrate arranged over the conductive layer; a conductive re-routing layer arranged over the second substrate; and a conductive via passing through the second substrate electrically coupling the conductive re-routing layer to the conductive layer, the conductive via being arranged over the pixel region. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. An image sensor device, comprising:
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a first substrate including a pixel region and a circuit region; an interconnect structure arranged over the first substrate, the interconnect structure including plurality of metal layers stacked over one another and extending over the pixel region and the circuit region; a conductive layer arranged over the interconnect structure; a second substrate arranged over the conductive layer; a conductive re-routing layer arranged over the second substrate; and a conductive via passing through the second substrate electrically coupling the conductive re-routing layer to the conductive layer, the conductive via being arranged over the pixel region. - View Dependent Claims (18, 19)
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Specification