Inventor
Hoi Sing Kwok
Inventor
Hong Kong, CN
Overview
Patents· 82 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G02Fprimary
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein27%
H10DInorganic electric semiconductor devices9%
C09KMaterials for miscellaneous applications, not provided for elsewhere8%
G02BOptical elements, systems or apparatus8%
H01LSemiconductor devices6%
H10KOrganic electric solid-state devices6%
H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h106%
G09GArrangements or circuits for control of indicating devices using static means to present variable information4%
H04NPictorial communication, e.g. television4%
C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium2%
PatentTitleYear
11,056,613Method for production of quantum rods with precisely controllable wavelength of emission202110,816,855Composite photoalignment layer202010,712,618Electrooptic device based on multiple domain scattering effect202010,607,556Driving scheme for ferroelectric liquid crystal displays202010,504,939Integration of silicon thin-film transistors and metal-oxide thin film transistors201910,451,948Standing helix ferroelectric liquid crystal display cell201910,381,564Organic-inorganic perovskite materials and optoelectronic devices fabricated by close space sublimation201910,281,7312D/3D switchable liquid crystal lens unit201910,142,602Fabrication method of a polarizing grating201810,032,924Metal oxide thin film transistor with channel, source and drain regions respectively capped with covers of different gas permeability20189,960,281Metal oxide thin film transistor with source and drain regions doped at room temperature20189,946,133Field sequential color ferroelectric liquid crystal display cell20189,933,685Switchable liquid crystal fresnel lens20189,818,607'Metal-induced crystallization of amorphous silicon in an oxidizing atmosphere'20179,791,743'Stabilized photo-alignment layer for liquid crystal'20179,743,054'Projection device and fabrication method of a polarization grating'20179,739,448'Patterned polarization grating polarization converter'20179,684,206'Copolymer, and liquid crystal alignment layer including cured product thereof'20179,575,366'Fast switchable and high diffraction efficiency grating ferroelectric liquid crystal cell'20179,383,607'Patterned polarization converter'20169,366,934'Field sequential color ferroelectric liquid crystal display cell'20169,341,855'Polarization converter by patterned polarization grating'20169,340,634'Polymer for use in liquid crystal alignment layer'20169,299,863'Ultrathin film multi-crystalline photovoltaic device'20169,214,568'Thin film transistor with two-dimensional doping array'20159,166,197'Metallic anode treated by carbon tetrafluoride plasma for organic light emitting device'20159,046,729'Cholesteric liquid crystal structure'20158,878,176'Metal-oxide based thin-film transistors with fluorinated active layer'20148,854,580'Method of producing spatially variable pretilt angles across a liquid crystal cell'20148,754,416'Method for fabrication of active-matrix display panels'20148,755,022'Liquid crystal display cell with fast response and continuous gray scale'20148,576,485'Photo-induced dichroic polarizers and fabrication methods thereof'20138,508,448'Method and apparatus for driving reflective bistable cholestric displays'20138,482,506'Transient liquid crystal architecture'20138,471,999'Low voltage liquid crystal lens with variable focal length'20138,426,865'Polycrystalline silicon thin film transistors with bridged-grain structures'20138,415,473'Luminescent gold(III) compounds for organic light-emitting devices and their preparation'20138,358,391'Method to obtain a controlled pretilt and azimuthal angles in a liquid crystal cell'20138,339,026'Polycrystalline silicon as an electrode for a light emitting diode and method of making the same'20128,338,237'Metal-induced crystallization of amorphous silicon in thin film transistors'20128,263,968'Double sided emission organic light emitting diode display'20128,256,903'Optical system and projector'20128,222,646'Thin-film transistors with metal source and drain and methods of fabrication'20128,120,735'Transflective liquid crystal display'20128,088,676'Metal-induced crystallization of amorphous silicon, polycrystalline silicon thin films produced thereby and thin film transistors produced therefrom'20128,013,957'Transflective liquid crystal device and method of manufacturing the same'20117,968,158'Liquid crystal alignment layer and methods of making thereof'20117,969,543'Retardation films having single retardation value with variation'20117,923,911'Polycrystalline silicon as an electrode for a light emitting diode and method of making the same'20117,892,711'Azo compound, composition for photo-alignment film using the same, and method for producing photo-alignment film'20117,790,580'Metal-induced crystallization of amorphous silicon in thin film transistors'20107,696,971'Method, materials and apparatus for driving gray-scale bistable cholesteric displays'20107,652,136'Diarylaminofluorene-based organometallic phosphors and organic light-emitting devices made with such compounds'20107,572,912'Luminescent gold (III) compounds, their preparation, and light-emitting devices containing same'20097,557,884'Bistable liquid crystal device'20097,551,252'Bistable twisted nematic liquid crystal display based on dual frequency operation'20097,402,947'Anode for organic light emitting diode'20087,381,507'Photo-patterned light polarizing films'20087,381,600'Method of annealing polycrystalline silicon using solid-state laser and devices built thereon'20087,236,219'Color twisted nematic liquid crystal displays'20077,133,211'Projector with flat light sources'20067,070,913'Photo-induced dichroic polarizers and fabrication methods thereof'20067,070,712'Acetylene polymers and their use as liquid crystals'20066,953,716'Polysilicon material and semiconductor devices formed therefrom'20056,919,947'Color vertically aligned liquid crystal displays'20056,801,280'Reflective liquid crystal displays having multilayer rear substrates'20046,793,344'Optical systems for liquid crystal display projectors'20046,784,955'Optically optimized permanently bistable twisted nematic liquid crystal displays'20046,707,527'Bistable twisted nematic liquid crystal displays with twist angle of 11 degrees'20046,633,358'Methods and apparatus for measurement of LC cell parameters'20036,630,289'Photo-patterned light polarizing films'20036,582,776'Method of manufacturing photo-alignment layer'20036,561,652'Optical assembly for reflective light valves'20036,532,051'Liquid crystal display with nonspecular reflectors'20036,462,873'Polarizing beam splitter'20026,341,001'Reflective active matrix liquid crystal displays with mixed twisted nematic and birefringent modes'20026,091,477'Single polarized LCD consisting of particular twist angle and thickness-birefringence product'20006,081,337'Method and apparatus for measuring liquid crystal cell properties'20005,999,152'Electro-Optic display providing a grey scale by utilizing voltage dependent birefringence'19995,926,245'Liquid crystal display having a single polarizer and no retardation film compensation'19994,874,741'Non-enhanced laser evaporation of oxide superconductors'19894,870,244'Method and device for stand-off laser drilling and cutting'1989Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1999–2016Patents assigned to UNIV HONG KONG SCIENCE & TECHN (50)· patent assignee history
1999–2018Based in Kowloon, HK· patent location history
1999–2000Based in HKUST, HK· patent location history
2002–2005Based in Clear Water Bay, HK· patent location history
2006–2021Based in Hong Kong, CN· patent location history
2012–2016Patents assigned to KWOK HOI SING (16)· patent assignee history
2012–2016Patents assigned to WONG MAN (10)· patent assignee history
2012–2017Patents assigned to KWOK HOI-SING (7)· patent assignee history
2017–2020Patents assigned to UNIV HONG KONG SCI & TECH (13)· patent assignee history
2017–2019Based in New Territories, HK· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| UNIV HONG KONG SCIENCE & TECHN | 50 | 1999–2016 |
| KWOK HOI SINGself | 16 | 2012–2016 |
| UNIV HONG KONG SCI & TECH | 13 | 2017–2020 |
| WONG MAN | 10 | 2012–2016 |
| KWOK HOI-SINGself | 7 | 2012–2017 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hong Kong, CN | 39 | 2006–2021 |
| Kowloon, HK | 27 | 1999–2018 |
| New Territories, HK | 3 | 2017–2019 |
| Clear Water Bay, HK | 3 | 2002–2005 |
| HKUST, HK | 3 | 1999–2000 |