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No. Publication Number Title Publication/Patent Number Publication/Patent Number Publication Date Publication Date
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1
US10775413B2
Image sensor testing probe card
Publication/Patent Number: US10775413B2 Publication Date: 2020-09-15 Application Number: 15/285,731 Filing Date: 2016-10-05 Inventor: Jen, Chih-pin   Yang, Ming-chang   Yang, Sheng-kuai   Assignee: Omnivision technologies inc   IPC: G01R31/311 Abstract: A method of increasing uniformity in light from a light source at a plurality of targets of the light includes locating a plurality of movable aperture elements between the light source and the targets. Each aperture element defines an aperture through which the light passes from the light source to an associated one of the plurality of targets associated with the aperture element along a longitudinal axis of the aperture element. The method also includes moving at least one of the aperture elements along its longitudinal axis to change a feature of light incident on the target associated with the aperture element.
2
US10761385B2
Liquid crystal on silicon panel having less diffraction
Publication/Patent Number: US10761385B2 Publication Date: 2020-09-01 Application Number: 15/852,313 Filing Date: 2017-12-22 Inventor: Zhang, Ming   Weng, Libo   Zhao, Cheng   Qian, Yin   Miao, Chia-chun   Lin, Zhiqiang   Tai, Dyson H.   Assignee: Omnivision technologies inc   IPC: G02F1/1362 Abstract: A liquid crystal on silicon (LCOS) panel comprises: a silicon substrate having silicon circuit within the silicon substrate; a plurality of metal electrodes disposed on the silicon substrate, where the plurality of metal electrodes are periodically formed on the silicon substrate; a dielectric material disposed in and filling gaps between adjacent metal electrodes; and an oxide layer disposed on the plurality of metal electrodes and the dielectric material in the gaps between adjacent metal electrodes; where the refractive index of the dielectric material is higher than the refractive index of the oxide layer.
3
US10609309B1
Combined visible and infrared image sensor incorporating selective infrared optical filter
Publication/Patent Number: US10609309B1 Publication Date: 2020-03-31 Application Number: 16/106,373 Filing Date: 2018-08-21 Inventor: Ho, Tawei   Lu, Chen-wei   Liu, Cheng-ming   Assignee: Omnivision technologies inc   IPC: H04N5/33 Abstract: A pixel array comprise a green pixel comprising a first green optical filter and a first clear filter, a red pixel comprising a red optical filter and a first special filter, a blue pixel comprising a blue optical filter and a second special filter, and an IR pixel comprising an IR optical filter and one of a second green optical filter and a second clear filter, where the first special filter suppresses a transmission of IR at a stopband centered at 850 nm at a first IR minimum transmission, and the second special filter suppresses a transmission of IR at the stopband centered at 850 nm at a second IR minimum transmission, and where the first minimum IR transmission is different from the second minimum IR transmission.
4
US10611108B2
Yardless lens assemblies and manufacturing methods
Publication/Patent Number: US10611108B2 Publication Date: 2020-04-07 Application Number: 15/282,095 Filing Date: 2016-09-30 Inventor: Wang, Mao-chin   Chang, Chia-yang   Kao, Shao-fan   Assignee: Omnivision technologies inc   IPC: B29D11/00 Abstract: A wafer-level method for manufacturing yardless lenses includes (a) depositing light-curable lens resin between a mold and a first side of a transparent substrate, wherein the first side of the transparent substrate has an opaque coating with a plurality of apertures respectively aligned with a plurality of lens-shaped recesses of the mold, and (b) exposing a second side of the transparent substrate, facing away from the first side, to light, thereby illuminating portions of the light-curable lens resin aligned with the plurality of apertures to form a respective plurality of yardless lenses.
5
US10644057B2
Source follower contact
Publication/Patent Number: US10644057B2 Publication Date: 2020-05-05 Application Number: 16/150,135 Filing Date: 2018-10-02 Inventor: Wang, Xin   Yang, Dajiang   Ma, Siguang   Mabuchi, Keiji   Phan, Bill   Mao, Duli   Tai, Dyson   Assignee: Omnivision technologies inc   IPC: H01L27/146 Abstract: An image sensor includes a photodiode disposed in a first semiconductor material to absorb photons incident on the image sensor and generate image charge. A floating diffusion is disposed in the first semiconductor material and positioned to receive the image charge from the photodiode, and a transfer transistor is coupled between the photodiode and the floating diffusion to transfer the image charge out of the photodiode into floating diffusion in response to a transfer signal. A source follower transistor with a gate terminal is coupled to the floating diffusion to output an amplified signal of the image charge in the floating diffusion. The gate terminal includes a second semiconductor material in contact with the floating diffusion, and a gate oxide is partially disposed between the second semiconductor material and the first semiconductor material. The second semiconductor material extends beyond the lateral bounds of the floating diffusion.
6
US10659056B1
Gray code counting signal distribution system
Publication/Patent Number: US10659056B1 Publication Date: 2020-05-19 Application Number: 16/440,279 Filing Date: 2019-06-13 Inventor: Sakurai, Satoshi   Ebihara, Hiroaki   Assignee: Omnivision technologies inc   IPC: H03K23/00 Abstract: A counter distribution system includes an N bit counter to receive a first counting clock to generate a plurality of data bits including lower data bits on lower data bit lines and upper data bits on upper data bit lines. The upper data bits include at least one redundant bit to provide error correction for the counter distribution system. A plurality of latches is coupled to the N bit counter. Each one of the lower data bit lines and each one of the upper data bit lines is coupled to at least one of the latches. The latches are arranged into a plurality of groupings of latches. Each grouping of latches is coupled to a respective latch enable signal. Each latch in each grouping of latches is coupled to latch a respective one of the plurality of data bits in response to the respective latch enable signal.
7
US2020109987A1
PHOTON SENSING WITH THRESHOLD DETECTION USING CAPACITOR-BASED COMPARATOR
Publication/Patent Number: US2020109987A1 Publication Date: 2020-04-09 Application Number: 16/155,616 Filing Date: 2018-10-09 Inventor: Willassen, Trygve   Bulteel, Olivier   Nguyen, Trung   Johansson, Robert   Assignee: Omnivision technologies inc   IPC: G01J1/46 Abstract: A threshold detection circuit includes a plurality of capacitors. A plurality of switching circuits is coupled to the capacitors such that a first end of each of the capacitors is coupled to a corresponding photon sensor during detection intervals, and the first end of each capacitor is coupled to a variable initialization value during reset intervals. A threshold number of the capacitors are initialized to a first value and the remaining capacitors are initialized to a second value during reset intervals. A comparator is coupled to a second of the capacitors to generate a detection event in response to the threshold number of photon sensors sensing one or more incident photons during detection intervals.
8
US2020105336A1
FAST ACCESS DRAM WITH 2 CELL-PER-BIT, COMMON WORD LINE, ARCHITECTURE
Publication/Patent Number: US2020105336A1 Publication Date: 2020-04-02 Application Number: 16/146,726 Filing Date: 2018-09-28 Inventor: Jung, Taehyung   Chen, Chia-ming   Yoon, Hyunsu   Assignee: Omnivision technologies inc   IPC: G11C11/408 Abstract: In a system, a 1T DRAM a decoder drives word lines, each driving enable transistors of true and complement DRAM cells; true DRAM cells being coupled to true bit lines, with complement DRAM cells coupled to complement bit lines. Differential sense amplifiers each receive true and complement bit lines. In a method of writing and reading DRAM, a DRAM is provided with common word lines feeding true and complement cells attached to true and complement bit lines. Writing the DRAM includes applying data to true bit lines with complement data on complement bit lines; then pulsing a selected word line to write data into true and complement cells. Reading requires pulsing precharge lines to reset true and complement bit lines; selecting a single word line to read the true and complement cells onto true and complement bit lines; and sensing differences between true and complement bit lines.
9
US2020052019A1
CAVITYLESS CHIP-SCALE IMAGE-SENSOR PACKAGE
Publication/Patent Number: US2020052019A1 Publication Date: 2020-02-13 Application Number: 16/100,835 Filing Date: 2018-08-10 Inventor: Yeh, Chien-chan   Kuo, Ying-chih   Lin, Wei-feng   Fan, Chun-sheng   Assignee: Omnivision technologies inc   IPC: H01L27/146 Abstract: A cavityless chip-scale image-sensor package includes a substrate, a microlens array, and a low-index layer. The substrate includes a plurality of pixels forming a pixel array. The microlens array includes a plurality of microlenses each (i) having a lens refractive index, (ii) being aligned to a respective one of the plurality of pixels and (iii) having a non-planar microlens surfaces facing away from the respective one of the plurality of pixels. The low-index layer has a first refractive index less than the lens refractive index. The low-index layer also includes a bottom surface, at least part of which is conformal to each non-planar microlens surface. The microlens array is between the pixel array and the low-index layer.
10
US2020322507A1
LIGHT-FIELD CAMERA AND METHOD USING WAFER-LEVEL INTEGRATION PROCESS
Publication/Patent Number: US2020322507A1 Publication Date: 2020-10-08 Application Number: 16/377,391 Filing Date: 2019-04-08 Inventor: Chen, Teng-sheng   Deng, Jau-jan   Chang, Chia-yang   Lin, Wei-feng   Assignee: Omnivision technologies inc   IPC: H04N5/225 Abstract: A camera module has light-field camera(s) and high resolution camera(s), the light-field camera(s) have multiple-lens arrays above an image sensor. The light-field camera(s) have a lens element at a same level as a lens element of the high resolution camera, the lens elements bearing apertures. The multiple-lens array of the light-field camera is above the image sensor at a same level as a flat transparent plate of the high resolution camera. The cameras lens cubes are made simultaneously by bonding molded lens plates and spacer plates, the lens plates and spacer plates including an upper lens plate having upper light-field camera lens elements and upper high resolution camera lens elements with applied apertures, multiple spacer plates, a microlens plate bearing an array of microlenses in the light-field cameras, the microlens plate being flat and transparent in areas of the high resolution camera.
11
US202050051A1
LCOS DISPLAY PANEL HAVING UV CUT FILTER
Publication/Patent Number: US202050051A1 Publication Date: 2020-02-13 Application Number: 20/181,605 Filing Date: 2018-08-08 Inventor: Ko, Pei-wen   Fan, Chun-sheng   Assignee: Omnivision technologies inc   IPC: G02F1/1339 Abstract: A LCOS display panel comprises a silicon substrate, a pixel structure on the silicon substrate, a first and a second PI (polyimide) layers, a LC (liquid crystal) layer between the first and the second PI layers, wherein the second PI layer is disposed on the pixel structure, and the LC layer is disposed on the second PI layer, a glass substrate, an ITO (indium tin oxide) layer, a dam sealing a perimeter of the LCOS display panel to enclose the LC layer within the dam, wherein the dam is disposed between the first and second PI layers, and holds the silicon substrate and the glass substrate together, and a UV (ultra violet) cut filter in an active area of the LCOS display panel, wherein the active area of the LCOS display panel includes the LC layer and the pixel structure.
12
US2020389586A1
HIGH-DYNAMIC RANGE IMAGE SENSOR AND IMAGE-CAPTURE METHOD
Publication/Patent Number: US2020389586A1 Publication Date: 2020-12-10 Application Number: 16/558,499 Filing Date: 2019-09-03 Inventor: Liu, Chengming   Dai, Tiejun   Mann, Richard   Assignee: Omnivision technologies inc   IPC: H04N5/235 Abstract: An image sensor includes a pixel array, and a first, second, and an intermediate memory-element. The memory-elements store, respectively, a first, second, and an intermediate exposure value. The pixel array includes pixel-subarrays each including a rescue pixel and a first, second, and third plurality of contiguous pixels. Each of the first plurality of pixels is connected to the first memory-element and spans diagonally-opposite corners of the pixel-subarray. Each of the second plurality of pixels is connected to the second memory-element and located on a first side of the first plurality of pixels. Each of the third plurality of pixels is connected to the second memory-element and located on a second side of the first plurality of pixels. The rescue-pixel is connected to the intermediate memory-element and is (i) located on one of the first side and the second side and/or (ii) adjacent to one of the first plurality of pixels.
13
US2020099875A1
IMAGE SENSOR WITH CORRECTION OF NON-UNIFORM DARK CURRENT
Publication/Patent Number: US2020099875A1 Publication Date: 2020-03-26 Application Number: 16/141,049 Filing Date: 2018-09-25 Inventor: Mikes, Gabor   Assignee: Omnivision technologies inc   IPC: H04N5/361 Abstract: An imaging system comprises an image pixel array, a dark pixel array, and a controller. The image pixel array includes a plurality of pixel clusters adapted to generate image signals. The dark pixel array is adapted to generate one or more black reference signals corresponding to a global black level value of the imaging system. The controller includes logic that when executed by the controller causes the system to perform operations including determining local black level values for each of the pixel clusters and correcting a first image signal included in the image signals based, at least in part, on the global black level and a first local black level value included in the local black level values.
14
US2020120315A1
COMBINED VISIBLE AND INFRARED IMAGE SENSOR INCORPORATING SELECTIVE INFRARED OPTICAL FILTER
Publication/Patent Number: US2020120315A1 Publication Date: 2020-04-16 Application Number: 16/106,373 Filing Date: 2018-08-21 Inventor: Ho, Tawei   Lu, Chen-wei   Liu, Cheng-ming   Assignee: Omnivision technologies inc   IPC: H04N9/04 Abstract: A pixel array comprise a green pixel comprising a first green optical filter and a first clear filter, a red pixel comprising a red optical filter and a first special filter, a blue pixel comprising a blue optical filter and a second special filter, and an IR pixel comprising an IR optical filter and one of a second green optical filter and a second clear filter, where the first special filter suppresses a transmission of IR at a stopband centered at 850 nm at a first IR minimum transmission, and the second special filter suppresses a transmission of IR at the stopband centered at 850 nm at a second IR minimum transmission, and where the first minimum IR transmission is different from the second minimum IR transmission.
15
US2020153440A1
TWO STAGE GRAY CODE COUNTER WITH A REDUNDANT BIT
Publication/Patent Number: US2020153440A1 Publication Date: 2020-05-14 Application Number: 16/190,862 Filing Date: 2018-11-14 Inventor: Sakurai, Satoshi   Ebihara, Hiroaki   Assignee: Omnivision technologies inc   IPC: H03K23/00 Abstract: An N bit counter includes a lower counter having a first output having M bits that operates a first counting frequency. An upper counter having a second output having N−M+L bits operates a second counting frequency. The second counting frequency is equal to the first counting frequency divided by 2(M−L). An error correction controller is coupled to receive the first and second outputs and perform operations that include comparing the L least significant bits (LSBs) of the second output and at least one most significant bit (MSB) of the first output, and correcting the N−M MSBs of the second output in response to the comparison. The lower bits of the N bit counter are the M bits of the first output, and the upper bits of the N bit counter are the corrected N−M MSBs of the second output.
16
US2020144323A1
SMALL-PITCH IMAGE SENSOR
Publication/Patent Number: US2020144323A1 Publication Date: 2020-05-07 Application Number: 16/181,705 Filing Date: 2018-11-06 Inventor: Liu, Yuanliang   Venezia, Vincent   Assignee: Omnivision technologies inc   IPC: H01L27/146 Abstract: Image sensor includes a first semiconductor material and a plurality of first doped regions disposed in the semiconductor material. The plurality of first doped regions is part of a plurality of photodiodes to receive light and convert the light into image charge. A second semiconductor material is disposed on the first semiconductor material, and a plurality of second doped regions is disposed in the second semiconductor. The plurality of second doped regions is electrically coupled to the plurality of first doped regions, and the plurality of second doped regions is part of the plurality of photodiodes.
17
US10582178B2
Systems and methods for active depth imager with background subtract
Publication/Patent Number: US10582178B2 Publication Date: 2020-03-03 Application Number: 15/341,374 Filing Date: 2016-11-02 Inventor: Yang, Zheng   Funatsu, Eiichi   Manabe, Sohei   Mabuchi, Keiji   Yang, Dajiang   Mao, Duli   Zhang, Bowei   Assignee: Omnivision technologies inc   IPC: H04N13/00 Abstract: An active depth imaging system and method of operating the same captures illuminator-on and illuminator-off image data with each of a first and second imager. The illuminator-on image data includes information representing an imaged scene and light emitted from an illuminator and reflected off of objects within the imaged scene. The illuminator-off image data includes information representing the imaged scene without the light emitted from the illuminator. For each image set captured by the first and second imagers, illuminator-off image data is subtracted from the illuminator-on image data to identify the illuminated light within the scene. The depth of an object at which the light is incident on then is determined by the subtracted image data of the first and second imagers.
18
US10566377B2
Self-aligned optical grid on image sensor
Publication/Patent Number: US10566377B2 Publication Date: 2020-02-18 Application Number: 16/130,309 Filing Date: 2018-09-13 Inventor: Wang, Xin   Yang, Dajing   Wang, Qin   Mao, Duli   Tai, Dyson Hsin-chih   Assignee: Omnivision technologies inc   IPC: H01L27/146 Abstract: An image sensor includes a substrate, a plurality of light sensitive pixels, a first plurality of color filters, a plurality of reflective sidewalls, and a second plurality of color filters. The light sensitive pixels are formed on said substrate. The first plurality of color filters is disposed over a first group of the light sensitive pixels. The reflective sidewalls are formed on each side of each of the first plurality of color filters. The second plurality of color filters are disposed over a second group of light sensitive pixels and each color filter of the second plurality of color filters is separated from each adjacent filter of said first plurality of color filters by one of the reflective sidewalls. In a particular embodiment an etch-resistant layer is disposed over the first plurality of color filters and the second group of light sensitive pixels.
19
US2020227394A1
SEMICONDUCTOR DEVICE PACKAGE AND METHOD OF MANUFACTURING THE SAME
Publication/Patent Number: US2020227394A1 Publication Date: 2020-07-16 Application Number: 16/248,125 Filing Date: 2019-01-15 Inventor: Yeh, Chien Chan   Kuo, Ying-chih   Lin, Wei-feng   Assignee: Omnivision technologies inc   IPC: H01L25/16 Abstract: A semiconductor device package includes a transparent substrate, a photo detector and a first conductive layer. The transparent substrate has a first surface and a first cavity underneath the first surface. The photo detector is disposed within the first cavity. The photo detector has a sensing area facing toward a bottom surface of the first cavity of the transparent substrate. The first conductive layer is disposed over the transparent substrate and electrically connected to the photo detector.
20
US2020260031A1
BIAS CIRCUIT FOR USE WITH DIVIDED BIT LINES
Publication/Patent Number: US2020260031A1 Publication Date: 2020-08-13 Application Number: 16/275,092 Filing Date: 2019-02-13 Inventor: Ebihara, Hiroaki   Yang, Zheng   Wang, Rui   Dai, Teijun   Assignee: Omnivision technologies inc   IPC: H04N5/378 Abstract: An image sensor includes a pixel array including a plurality of pixels. Each pixel is coupled to generate image data in response to incident light. A bit line is coupled to a column of pixels of the pixel array and is separated into first and second portions. Each portion is coupled to a corresponding portion of rows of pixels of the pixel array. A readout circuit coupled to the bit line to read out the image data from the pixel array. The readout circuit includes a cascode device coupled between the first and second portions of the bit line. The cascode device is coupled to be biased to electrically separate the first and second portions of the bit line from one another such that a capacitance of each portion of the bit line does not affect a settling time of an other portion of the bit line.