Inventor · Hitachi, JP

Makoto Tsumura

69Patents
23h-index
89Co-inventors
91Inventor score

Filing activity: Feb 28, 1985 → Dec 6, 2011

Most-cited inventions

PatentTitleAreaCited byStatus
US5668379A Active matrix crystal display apparatus using thin film transistor Physics 195 Expired
US7495719B2 Device capable of switching between an image display status and a mirror status, and an instrument disposed therewith Physics 190 Expired
US7006173B1 Liquid crystal display device having particular reflective polarizer Physics 151 Expired
US7245336B2 Liquid crystal display device Physics 131 Expired
US5786876A Active matrix type liquid crystal display system Physics 108 Expired
US7038641B2 Color/black-and-white switchable portable terminal and display unit Emerging Cross-Sectional Technologies 105 Expired
US6469755B1 Illuminating arrangement with reflector having inclined irregularities or corrugations Physics 96 Expired
US5760854A Liquid crystal display apparatus Physics 90 Expired
US6456267B1 Liquid crystal display Physics 67 Expired
US6300926A Active matrix type liquid crystal display Physics 65 Expired
US5561440A Liquid crystal display device and driving method therefor Physics 60 Expired
US6115017A Liquid crystal display apparatus Physics 58 Expired
US5886761A Process for producing actively addressing substrate, and liquid crystal display Physics 55 Expired
US5949502A Liquid crystal device having resistor elements Physics 51 Expired
US6331845A Liquid crystal display device and driving method therefor Physics 46 Expired
US6064358A Liquid crystal display device and driving method therefor Physics 46 Expired
US6561663B2 Plane-like lighting units and display equipment provided therewith Emerging Cross-Sectional Technologies 44 Expired
US5477355A Process for producing the passivation layer of an active matrix substrate by back exposure Physics 44 Expired
US6909442B2 Display device for decompressing compressed image data received Physics 40 Expired
US5751381A Active matrix LCD device with image signal lines having a multilayered structure Electricity 30 Expired
US6329973A Image display device Physics 28 Expired
US5430460A Method and apparatus for driving liquid crystal display unit Physics 24 Expired
US7355575B1 Matrix panel display apparatus and driving method therefor wherein auxiliary signals are applied to non-selected picture elements Physics 23 Expired
US7463235B2 Light illumination apparatus and liquid crystal display apparatus using the same Physics 23 Expired
US6650472B1 Luminous intensity distribution control device and display having the same Physics 20 Expired

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.