31
Hiroshi Kageyama, Hajime Akimoto: Image display apparatus. Hitachi, Antonelli Terry Stout & Kraus, May 22, 2007: US07221343 (10 worldwide citation)

There is provided an image display apparatus having light emitting elements in its pixels, producing high resolution, facilitating γ correction, and free from occurrence of pseudo contours. A pixel circuit of the image display apparatus of the present invention with a switch circuit for switching be ...


32
Hajime Akimoto, Yoshirou Mikami, Kiyoshige Kinugawa, Shigeyuki Nishitani, Takeo Shiba: Image display device. Japan Display, Panasonic Liquid Crystal Display, Stites & Harbison PLLC, Juan Carlos A Marquez Esq, May 20, 2014: US08730281 (9 worldwide citation)

The invention provides an image display device that has an especially satisfactory display quality for animated images, and sufficiently suppresses the irregularities of display quality among pixels. The image display device includes a light emitting drive means that drives a light emitting means, b ...


33
Shigeyuki Nishitani, Toshihiro Sato, Genshiro Kawachi, Hajime Akimoto: Display device employing current-driven type light-emitting elements and method of driving same. Hitachi, Milbank Tweed Hadley & McCloy LL, July 4, 2006: US07071906 (9 worldwide citation)

A display device includes plural red, green, and blue pixels provided with current-driven type red-, green-, and blue-light-emitting elements, respectively. A method of driving the display device includes writing a video signal voltage into each of the pixels in a state in which all the light-emitti ...


34
Hajime Akimoto, Kiyoshige Kinugawa, Nobuaki Hayashi: Image display device. Hitachi Displays, Reed Smith, Juan Carlos A Marquez Esq, April 14, 2009: US07518577 (8 worldwide citation)

An image display device which has a stable luminous brightness among pixels. An on/off control switch 15 for stopping the driving operation of a light emitting element 13 is provided in a pixel 1. A change in the luminous brightness caused by a variation in the characteristic of the light emitting e ...


35
Hiroshi Kageyama, Hajime Akimoto: Image display device. Hitachi, Hitachi Displays, Reed Smith, Stanley P Fisher Esq, Juan Carlos A Marquez Esq, March 14, 2006: US07012586 (8 worldwide citation)

The present invention provides an image display device that reduces variations in brightness of the light emitting elements included in the device due to a voltage drop on the power source line of the device and TFT threshold voltage variations and displays good quality images. The image display dev ...


36
Hiroshi Kageyama, Hajime Akimoto: Image display apparatus. Hitachi, Antonelli Terry Stout & Kraus, May 27, 2008: US07379044 (7 worldwide citation)

An image display apparatus includes pixels each having a light emitting element and a pixel circuit, analog signal lines and current-supply lines. The pixel circuit includes first and second TFTs and first and second capacitors. Drain and source electrodes of the first TFT are coupled to the light e ...


37
Hajime Akimoto, Shigeyuki Nishitani, Shinichi Komura, Toshihiro Sato, Hiroshi Kageyama, Yoshiteru Shimizu: Image display. Japan Display, Panasonic Liquid Crystal Display, Antonelli Terry Stout & Kraus, January 21, 2014: US08633878 (7 worldwide citation)

An image display is provided with a display area including pixels, each including illuminating means. A control circuit turns the illuminating means of the pixels on and off. A first terminal of a capacitor is connected to an input terminal of the control circuit. An image signal voltage generation ...


38
Hajime Akimoto, Shigeyuki Nishitani, Shinichi Komura, Toshihiro Sato, Hiroshi Kageyama, Yoshiteru Shimizu: Image display. Hitachi Displays, Panasonic Liquid Crystal Display, Antonelli Terry Stout & Kraus, April 17, 2012: US08159427 (7 worldwide citation)

An image display is provided with a display area including pixels, each including illuminating means. A control circuit turns the illuminating means of the pixels on and off. A capacitance is provided having a first node connected to an input terminal of the control circuit. A display signal voltage ...


39
Takehide Furukawa, Naruhiko Kasai, Hajime Akimoto: Display device with a touch screen. Hitachi Displays, Antonelli Terry Stout & Kraus, September 28, 2010: US07804479 (7 worldwide citation)

A display device with a touch screen having display pixels and optical sensors each arranged in a matrix. In the display device, a backlight controller controls a backlight unit to be turned ON in a data display duration and controls the backlight unit to be turned OFF in a sensor detection duration ...


40
Hiroshi Kageyama, Hajime Akimoto: Image display apparatus. Hitachi, Antonelli Terry Stout and Kraus, December 5, 2006: US07145532 (7 worldwide citation)

There is provided an image display apparatus having light emitting elements in its pixels, and capable of producing a high-resolution, multi-gray-scale-level display. In an embodiment of the present invention, each of pixel circuits is provided with a current limiting circuit for generating a specif ...