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US 2026/0096237 A1Published application
Toric-microlens image sensor
AssigneeOmniVision Technologies, Inc.
InventorsYen-Yun WANG, Chen-Wei LU, Chao NIU
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Abstract
An image sensor includes a semiconductor substrate and a toric microlens. The semiconductor substrate includes a pixel array having a plurality of rows of pixels and a plurality of columns of pixels. A pixel cell of the pixel array includes one or more pixels of the pixel array. The toric microlens is disposed on the semiconductor substrate and directly above a corresponding pixel cell of the pixel array.
Claims21
An image sensor comprising:
- a semiconductor substrate including a pixel array having a plurality pixel cells arranged into a plurality of rows and a plurality of columns, a pixel cell of the pixel array including a two-by-two sub-array of pixels of the pixel array;
- and
- a plurality of toric microlenses disposed on the semiconductor substrate, arranged into a plurality of microlens rows and a plurality of microlens columns, each toric microlens being directly above a corresponding pixel cell of the pixel array;
- each toric microlens having a horizontal width, and a vertical width that differs from the horizontal width, such that a vertical separation between adjacent microlenses in adjacent microlens rows differs from a horizontal separation between adjacent microlenses in adjacent microlens columns;
- the horizontal width being in a direction parallel to each of the plurality of rows;
- the vertical width being in a direction parallel to each of the plurality of columns.
3 more elements
An image sensor comprising:
- a semiconductor substrate including a pixel array having a plurality of rows of pixels and a plurality of columns of pixels, a pixel cell of the pixel array including a two-by-two sub-array of pixels of the pixel array;
- and
- a toric microlens disposed on the semiconductor substrate and directly above a corresponding pixel cell of the pixel array.
A pixel cell included in an image sensor comprising:
- a semiconductor substrate having one or more photodiodes;
- a color filter disposed on the semiconductor, directly above the one or more photodiodes, and
- a microlens, the color filter being disposed between the microlens and the semiconductor substrate and directing an incident light toward the one or more photodiodes;
- wherein in the microlens having a first width Wx in a first direction and a second width Wy in the second direction perpendicular to the first direction, wherein either:
- (i) the first width Wx exceeds the second width Wy or (ii) the second width Wy exceeds the first width Wx.
2 more elements
Dependencies are inferred from the claim text.