593 patents
Utility
SiGe photodiode for crosstalk reduction
16 Jan 24
SiGe photodiode for crosstalk reduction.
Heesoo Kang, Bill Phan, Seong Yeol Mun
Filed: 9 Jun 21
Utility
Pixel Circuit for High Dynamic Range Image Sensor
11 Jan 24
A pixel circuit includes a first photodiode and a second photodiode.
Keiji Mabuchi, Tiejun Dai
Filed: 6 Jul 22
Utility
Thin, multi-lens, optical fingerprint sensor adapted to image through cell phone displays
9 Jan 24
A multiple-lens optical fingerprint reader for reading fingerprints through a display has a spacer; and multiple microlenses with concave and convex surfaces in a microlens array, each microlens of multiple lenses focuses light arriving at that microlens from a finger adjacent the display through the spacer forms an image on associated photosensors on a photosensor array of an image sensor integrated circuit.
Jau-Jan Deng, Kuang-Ju Wang, Chun-Jen Wei
Filed: 27 Oct 21
Utility
Image sensor with elevated floating diffusion
9 Jan 24
A pixel cell with an elevated floating diffusion region is formed to reduce diffusion leakage (e.g., gate induced drain leakage, junction leakage, etc.).
Seong Yeol Mun, Heesoo Kang
Filed: 2 Jul 20
Utility
Signal-charge estimator and method
9 Jan 24
A method for estimating a signal charge collected by a pixel of an image sensor includes determining an average bias that depends on the pixel's floating-diffusion dark current and pixel-sampling period.
Boyd Fowler, Andreas Suess
Filed: 20 Jul 22
Utility
Devices and methods for obtaining three-dimensional shape information using polarization and time-of-flight detection pixel cells
9 Jan 24
In some embodiments, an imaging system is provided.
Badrinath Padmanabhan, Boyd Fowler, Alireza Bonakdar, Richard Mann
Filed: 8 May 20
Utility
Circuit and method for image artifact reduction in high-density, high-pixel-count, image sensor with phase detection autofocus
9 Jan 24
In an embodiment, a method of reducing resistance-capacitance delay along photodiode transfer lines of an image sensor includes forking a plurality of photodiode transfer lines each into a plurality of sublines coupled together and to a first decoder-driver at a first end of each subline; and distributing selection transistors of a plurality of multiple-photodiode cells among the plurality of sublines.
Selcuk Sen, Liang Zuo, Rui Wang, Xuelian Liu, Min Qu, Hiroaki Ebihara
Filed: 3 Feb 22
Utility
Image Sensor and Method for Fabricating the Same
4 Jan 24
The present invention provides an image sensor and a method for fabricating the image sensor.
Liqun DONG, Haibo XIAO, Shuaibing LIN, Xinzhi DAI
Filed: 26 Aug 22
Utility
Flare-suppressing image sensor
2 Jan 24
Embodiments disclosed herein reduce petal flare.
Gang Chen, Qin Wang, Chao Niu
Filed: 2 Aug 21
Utility
Shallow trench isolation (STI) structure for CMOS image sensor
2 Jan 24
A shallow trench isolation (STI) structure and method of fabrication includes forming a shallow trench isolation (STI) structure having a polygonal shaped cross-section in a semiconductor substrate of an image sensor includes a two-step etching process.
Seong Yeol Mun, Heesoo Kang, Xiang Zhang
Filed: 13 May 21
Utility
Light-trapping image sensors
2 Jan 24
A light-trapping image sensor includes a pixel array and a lens array.
Alireza Bonakdar, Zhiqiang Lin, Lindsay Grant
Filed: 30 Jan 20
Utility
Electrical isolation in pixel-array substrates using combination of doped semiconductor guard rings and overlapping isolation trenches
2 Jan 24
Yuanwei Zheng, Sing-Chung Hu, Gang Chen, Dyson Tai, Lindsay Grant
Filed: 18 Jun 20
Utility
High Dynamic Range Cmos Image Sensor Pixel with Reduced Metal-insulator-metal Lateral Overflow Integration Capacitor Lag
28 Dec 23
A pixel circuit includes a photodiode configured to photogenerate image charge in response to incident light.
Woon Il Choi
Filed: 24 Jun 22
Utility
Pixel Designs with Reduced Lofic Reset and Settling Times
28 Dec 23
Pixel designs with reduced LOFIC reset and settling times are disclosed herein.
Zhe Gao, Chengcheng Xu, Dennis Tunglin Lee, Tiejun Dai
Filed: 24 Jun 22
Utility
Fisheye Image Transformation Algorithm Based on Virtual Spheres
14 Dec 23
A fisheye image transformation algorithm based on virtual spheres is provided, comprising: defining a real camera coordinate system O-XYZ and a virtual camera coordinate system O2-X2Y2Z2, wherein a small virtual sphere centered at O with a radius of 1 and a large virtual sphere centered at O2 with a radius of n are defined, the small sphere is internally tangent to the large sphere; transforming a fisheye image to 3D unit vectors in the real camera coordinate system, transforming the 3D unit vectors between the real camera coordinate system and the virtual camera coordinate system according to a relative position between two spheres, and conducting conventional projection of the 3D unit vectors in the virtual camera coordinate system to generate the transformed image; and reducing the line curvature of the transformed image to a certain degree by adjusting the HFOV angle or the VFOV angle of the virtual camera.
Biao HE, Yanyan LIU
Filed: 16 Aug 22
Utility
Thin, Multi-lens, Optical Fingerprint Sensor Adapted to Image Through Cell Phone Displays and with Multiple Photodiode Groups Each Having Separate Fields of View for Each Microlens
14 Dec 23
An image sensor for imaging fingerprints has multiple photodiode groups each with field of view through a microlens determined by optical characteristics of the microlens and locations of the microlens and openings of upper and lower mask layers.
Jau-Jan DENG, Yi-Wei LIU
Filed: 13 Jun 22
Utility
Compact Camera Incorporating Microlens Arrays for Ultra-short Distance Imaging
14 Dec 23
A compact camera includes an image sensor, a transparent layer, and a microlens (ML) layer, between the image sensor and the transparent layer.
Shih-Hsin Hsu
Filed: 8 Jun 22
Utility
Optical fingerprint sensor with spoof detection and associated method
12 Dec 23
An optical fingerprint sensor with spoof detection includes a plurality of lenses, an image sensor including a pixel array that includes a plurality of first photodiodes and a plurality of second photodiodes, and at least one apertured baffle-layer having a plurality of aperture stops, wherein each second photodiode is configured to detect light having passed through a lens and at least one aperture stop not aligned with the lens along an optical axis.
Paul Wickboldt, Jau-Jan Deng, Shih-Hsin Hsu
Filed: 8 Sep 21
Utility
Pixel, associated image sensor, and method
12 Dec 23
A pixel includes a semiconductor substrate, a low-κ dielectric, and a photodiode region in the semiconductor substrate.
Hui Zang, Cunyu Yang, Gang Chen
Filed: 20 Nov 19
Utility
HV driver for rolling clamp in image sensor
12 Dec 23
An imaging system includes a pixel array with pixel circuits, each including a photodiode, a floating diffusion, a source follower transistor, and a row select transistor.
Lei Zou, Sindre Mikkelsen
Filed: 28 Apr 23