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1
US2020027865A1
MICRO LED DISPLAY AND MANUFACTURING METHOD THEREOF
Publication/Patent Number: US2020027865A1 Publication Date: 2020-01-23 Application Number: 16/120,835 Filing Date: 2018-09-04 Inventor: Fan, Regis   Ko, Pei-wen   Fan, Chun-sheng   Assignee: OmniVision Semiconductor (Shanghai) Co., Ltd.   IPC: H01L25/16 Abstract: A micro LED display and a manufacturing method thereof are disclosed. A plurality of electrode structures is formed on a first surface of a substrate, and a plurality of circuit structure are formed in the substrate, where the circuit structures are electrically connected to the electrode structures. An LED functional layer is formed on the substrate, and includes a plurality of mutually isolated LED functional structures, where the LED functional structures are corresponding and electrically connected to the electrode structures. An electrode layer covers the LED functional layer and is electrically connected to the LED functional structures. Micro lenses are formed on the electrode layer and corresponding to the LED functional structures. Therefore, all the LED functional structures can be wholly used as a light-emitting region of a pixel, improving light emission efficiency of the micro LED display.
2
US10684477B2
Near-eye display device and methods with coaxial eye imaging
Publication/Patent Number: US10684477B2 Publication Date: 2020-06-16 Application Number: 15/097,137 Filing Date: 2016-04-12 Inventor: Liu, Yi-wei   Deng, Jau-jan   Fan, Regis   Assignee: OmniVision Technologies, Inc.   IPC: G02B27/01 Abstract: A near-eye display device includes (a) a display unit for displaying a display image, (b) a viewing unit for presenting the display image to the eye and transmitting ambient light from an ambient scene toward the eye, and (c) an eye imaging unit including (i) an illumination module for generating at least three infrared light beams propagating along at least three different, non-coplanar directions, respectively, (ii) a first beamsplitter interface, disposed between the display unit and the viewing unit, for merging at least a portion of each of the infrared light beams with visible display light to direct each portion toward the eye via the viewing unit, and (iii) a camera for imaging, via the viewing unit and the first beamsplitter interface, pupil of the eye and reflections of the infrared light beams incident on the eye, to form one or more images indicative of gaze direction of the eye.
3
US202027865A1
MICRO LED DISPLAY AND MANUFACTURING METHOD THEREOF
Publication/Patent Number: US202027865A1 Publication Date: 2020-01-23 Application Number: 20/181,612 Filing Date: 2018-09-04 Inventor: Fan, Regis   Fan, Chun-sheng   Ko, Pei-wen   Assignee: OmniVision Semiconductor (Shanghai) Co., Ltd.   IPC: H01L33/62 Abstract: A micro LED display and a manufacturing method thereof are disclosed. A plurality of electrode structures is formed on a first surface of a substrate, and a plurality of circuit structure are formed in the substrate, where the circuit structures are electrically connected to the electrode structures. An LED functional layer is formed on the substrate, and includes a plurality of mutually isolated LED functional structures, where the LED functional structures are corresponding and electrically connected to the electrode structures. An electrode layer covers the LED functional layer and is electrically connected to the LED functional structures. Micro lenses are formed on the electrode layer and corresponding to the LED functional structures. Therefore, all the LED functional structures can be wholly used as a light-emitting region of a pixel, improving light emission efficiency of the micro LED display.
4
US10607974B2
Micro LED display and manufacturing method thereof
Publication/Patent Number: US10607974B2 Publication Date: 2020-03-31 Application Number: 16/120,835 Filing Date: 2018-09-04 Inventor: Fan, Regis   Ko, Pei-wen   Fan, Chun-sheng   Assignee: OMNIVISION SEMICONDUCTOR (SHANGHAI) CO., LTD.   IPC: H01L25/16 Abstract: A micro LED display and a manufacturing method thereof are disclosed. A plurality of electrode structures is formed on a first surface of a substrate, and a plurality of circuit structure are formed in the substrate, where the circuit structures are electrically connected to the electrode structures. An LED functional layer is formed on the substrate, and includes a plurality of mutually isolated LED functional structures, where the LED functional structures are corresponding and electrically connected to the electrode structures. An electrode layer covers the LED functional layer and is electrically connected to the LED functional structures. Micro lenses are formed on the electrode layer and corresponding to the LED functional structures. Therefore, all the LED functional structures can be wholly used as a light-emitting region of a pixel, improving light emission efficiency of the micro LED display.
5
US10409078B2
Lensed beam-splitter prism array and associated method
Publication/Patent Number: US10409078B2 Publication Date: 2019-09-10 Application Number: 14/605,554 Filing Date: 2015-01-26 Inventor: Deng, Jau-jan   Fan, Regis   Liu, Yi-wei   Assignee: OmniVision Technologies, Inc.   IPC: G02B27/12 Abstract: A lensed beam-splitter prism array includes a beam-splitter substrate with a plurality of planar and parallel thin-film coatings each spanning a top substrate surface and a bottom substrate surface, and making an oblique angle therebetween, and a lens form layer formed on the top surface and having a plurality of lens forms, each lens form being above one of the plurality of coatings. A method for fabricating a lensed beam-splitter prism includes bonding a plurality of substrates to form a substrate stack having a coating between each adjacent substrate pair. The method also includes forming a stack slice by applying a plurality of parallel cuts at an oblique angle with respect to each coating. Each coating spans a first stack-slice surface and a second stack-slice surface opposing the first stack-slice surface. The method also includes forming a lens form layer on the first stack-slice surface spanning one or more coatings.
6
US10429699B2
System and method for protecting a liquid crystal display by controlling ion migration
Publication/Patent Number: US10429699B2 Publication Date: 2019-10-01 Application Number: 15/428,307 Filing Date: 2017-02-09 Inventor: Walker, Christopher Morgan   Weng, Libo   Cellek, Oray Orkun   Zhang, Ming   Qian, Yin   Tai, Dyson Hsin-chih   Fan, Regis   Assignee: OmniVision Technologies, Inc.   IPC: G02F1/1337 Abstract: A liquid crystal display includes a display area and a border area at least partially surrounding the display area, where the display area displays images for viewing and the border area displays display-protection images, which are used to control ion migration in the liquid crystal layer. In a more particular embodiment, the border area displays a series of checkerboard pattern(s), where the checkerboard patterns can alternate between initial and inverted values. The display-protection images protect the liquid crystal display from migrating ions accumulating in particular regions of the pixel array and causing permanent defects in the display area. A liquid crystal display that includes a liquid crystal alignment layer having a plurality of liquid crystal alignment directions is also disclosed. The customized liquid crystal alignment director(s) over the border area promote ion migration away from the display area.
7
US10481439B2
System and method for protecting a liquid crystal display by controlling ion migration
Publication/Patent Number: US10481439B2 Publication Date: 2019-11-19 Application Number: 15/357,920 Filing Date: 2016-11-21 Inventor: Walker, Christopher Morgan   Weng, Libo   Cellek, Oray Orkun   Zhang, Ming   Qian, Yin   Tai, Dyson Hsin-chih   Fan, Regis   Assignee: OmniVision Technologies, Inc.   IPC: G09G3/36 Abstract: A liquid crystal display includes a display area and a border area at least partially surrounding the display area, where the display area displays images for viewing and the border area displays display-protection images, which are used to control ion migration in the liquid crystal layer. In a more particular embodiment, the border area displays a series of checkerboard pattern(s), where the checkerboard patterns can alternate between initial and inverted values. The display-protection images protect the liquid crystal display from migrating ions accumulating in particular regions of the pixel array and causing permanent defects in the display area. A liquid crystal display that includes a liquid crystal alignment layer having a plurality of liquid crystal alignment directions is also disclosed. The customized liquid crystal alignment director(s) over the border area promote ion migration away from the display area.
8
US10155330B2
Method of forming packaged lens modules
Publication/Patent Number: US10155330B2 Publication Date: 2018-12-18 Application Number: 14/869,578 Filing Date: 2015-09-29 Inventor: Fan, Regis   Assignee: OMNIVISION OPTOELECTRONICS TECHNOLOGIES (SHANGHAI) CO., LTD.   IPC: G02B13/00 Abstract: A method of forming packaged lens modules is disclosed which includes: securing first ends of a plurality of lens modules equidistantly on a first mold plate; providing a second mold plate matching with second ends of the lens modules and securing the second mold plate on the second ends of the lens modules; filling a black material in gaps between the lens modules; and removing the first and second mold plates after the black material is cured and performing a dicing process. The method can effectively block lens openings to protect lenses from being contaminated and can eliminate the need for adhesive application and removal generally performed on second ends of the lens modules, thereby resulting in time savings and an efficiency improvement. Additionally, a height of the resulting packaged lens modules can be modified for back focal length compensation thereof by changing the size of the second mold plate.
9
US10086545B2
Method of forming packaged lens modules
Publication/Patent Number: US10086545B2 Publication Date: 2018-10-02 Application Number: 14/869,578 Filing Date: 2015-09-29 Inventor: Fan, Regis   Assignee: OMNIVISION OPTOELECTRONICS TECHNOLOGIES (SHANGHAI) CO., LTD.   IPC: B29C45/16 Abstract: A method of forming packaged lens modules is disclosed which includes: securing first ends of a plurality of lens modules equidistantly on a first mold plate; providing a second mold plate matching with second ends of the lens modules and securing the second mold plate on the second ends of the lens modules; filling a black material in gaps between the lens modules; and removing the first and second mold plates after the black material is cured and performing a dicing process. The method can effectively block lens openings to protect lenses from being contaminated and can eliminate the need for adhesive application and removal generally performed on second ends of the lens modules, thereby resulting in time savings and an efficiency improvement. Additionally, a height of the resulting packaged lens modules can be modified for back focal length compensation thereof by changing the size of the second mold plate.
10
US9958680B2
Near-eye display device and methods with coaxial eye imaging
Publication/Patent Number: US9958680B2 Publication Date: 2018-05-01 Application Number: 14/869,067 Filing Date: 2015-09-29 Inventor: Fan, Regis   Deng, Jau-jan   Liu, Yi-wei   Assignee: OmniVision Technologies, Inc.   IPC: G02B27/00 Abstract: A near-eye display device, with coaxial eye imaging, for mounting in field of view of an eye of a user, includes a display unit for displaying a display image, a viewing unit for (i) presenting the display image to the eye based upon polarized visible light received from the display unit and (ii) transmitting ambient light from an ambient scene toward the eye, and an eye imaging unit including (a) an illumination module for generating infrared light, (b) a first polarizing beamsplitter interface, disposed between the display unit and the viewing unit, for (i) merging a polarized infrared component of the infrared light with the polarized visible light and (ii) separating from the polarized visible light a portion of the polarized infrared component reflected by the eye, and (c) a camera for forming an image of the eye based upon the polarized infrared component reflected by the eye.
11
US9919455B2
Methods for forming a lens plate for an integrated camera using UV-transparent molds and methods for forming UV-transparent molds
Publication/Patent Number: US9919455B2 Publication Date: 2018-03-20 Application Number: 13/592,308 Filing Date: 2012-08-22 Inventor: Barnes, George   Rauker, Goran   Fan, Regis   Assignee: OmniVision Technologies, Inc.   IPC: B29C33/00 Abstract: Suspended lenses in a spacer wafer and lens-in-a-pocket structures are replicated from UV-transparent molds. The fabrication of UV-transparent molds can include providing a substrate with pedestals, fabricating a lens on each pedestal using a step-and-repeat process, replicating an intermediate mold from the substrate with pedestals having lenses on the pedestals, and replicating a UV-transparent mold from the intermediate mold. The fabrication of UV-transparent molds can also include providing a substrate with holes, fabricating a lens in each hole and replicating a UV-transparent mold from the substrate with the holes having the lenses.
12
US2018144710A1
System and Method for Protecting a Liquid Crystal Display by Controlling Ion Migration
Publication/Patent Number: US2018144710A1 Publication Date: 2018-05-24 Application Number: 15/357,920 Filing Date: 2016-11-21 Inventor: Fan, Regis   Tai, Dyson Hsin-chih   Qian, Yin   Zhang, Ming   Cellek, Oray Orkun   Weng, Libo   Walker, Christopher Morgan   Assignee: OmniVision Technologies, Inc.   IPC: G02F1/137 Abstract: A liquid crystal display includes a display area and a border area at least partially surrounding the display area, where the display area displays images for viewing and the border area displays display-protection images, which are used to control ion migration in the liquid crystal layer. In a more particular embodiment, the border area displays a series of checkerboard pattern(s), where the checkerboard patterns can alternate between initial and inverted values. The display-protection images protect the liquid crystal display from migrating ions accumulating in particular regions of the pixel array and causing permanent defects in the display area. A liquid crystal display that includes a liquid crystal alignment layer having a plurality of liquid crystal alignment directions is also disclosed. The customized liquid crystal alignment director(s) over the border area promote ion migration away from the display area.
13
US2018143498A1
System and Method for Protecting a Liquid Crystal Display by Controlling Ion Migration
Publication/Patent Number: US2018143498A1 Publication Date: 2018-05-24 Application Number: 15/428,307 Filing Date: 2017-02-09 Inventor: Fan, Regis   Tai, Dyson Hsin-chih   Qian, Yin   Zhang, Ming   Cellek, Oray Orkun   Weng, Libo   Walker, Christopher Morgan   Assignee: OmniVision Technologies, Inc.   IPC: G02F1/1337 Abstract: A liquid crystal display includes a display area and a border area at least partially surrounding the display area, where the display area displays images for viewing and the border area displays display-protection images, which are used to control ion migration in the liquid crystal layer. In a more particular embodiment, the border area displays a series of checkerboard pattern(s), where the checkerboard patterns can alternate between initial and inverted values. The display-protection images protect the liquid crystal display from migrating ions accumulating in particular regions of the pixel array and causing permanent defects in the display area. A liquid crystal display that includes a liquid crystal alignment layer having a plurality of liquid crystal alignment directions is also disclosed. The customized liquid crystal alignment director(s) over the border area promote ion migration away from the display area.
14
US10002215B2
Arrayed imaging systems having improved alignment and associated methods
Publication/Patent Number: US10002215B2 Publication Date: 2018-06-19 Application Number: 15/236,833 Filing Date: 2016-08-15 Inventor: Duerksen, Gary L.   Macon, Kenneth Ashley   Hepp, Michael   Cormack, Robert   Schwartz, Brian   Meloni, Mark   Kubala, Kenneth   Rauker, Goran M.   Mader, John J.   He, James   Rhodes, Howard E.   Combs, Donald   Tamayo, Inga   Linnen, Christopher J.   Tachihara, Satoru   Scepanovic, Miodrag   Johnson, Gregory E.   Fan, Regis S.   Dobbs, Dennis W.   Chumachenko, Vladislav V.   Barnes, Iv George C.   Silveira, Paulo E. X.   Dowski, Edward R.   Assignee: OmniVision Technologies, Inc.   IPC: H04N5/335 Abstract: Arrayed imaging systems include an array of detectors formed with a common base and a first array of layered optical elements, each one of the layered optical elements being optically connected with a detector in the array of detectors.