1
Kazutaka Inukai, Jun Koyama: EL display device and electronic apparatus. Semiconductor Energy Laboratory, Cook Alex McFarron Manzo Cummings & Mehler, January 20, 2004: US06680577 (143 worldwide citation)

An EL display device capable of clear, multi-gradation color display, and an electronic device having the EL display device, are provided. Gradation display is performed in accordance with a time division driver method which controls by the amount of time an EL element formed in a pixel emits light, ...


2
Shunpei Yamazaki, Jun Koyama, Kazutaka Inukai: Electronic device having a light-emitting element. Semiconductor Energy Laboratory, Fish & Richardson P C, February 10, 2004: US06690033 (135 worldwide citation)

There is provided an electronic device in which the deterioration of the device is prevented and an aperture ratio is improved without using a black mask and without increasing the number of masks. In the electronic device, a first electrode (


3
Kazutaka Inukai: Light emitting device. Semiconductor Energy Laboratory, Cook Alex McFarron Manzo Cummings & Mehler, September 14, 2004: US06791129 (131 worldwide citation)

An active matrix light emitting device which is capable of clear color display of multiple gray scales is provided. The light emitting device has a pixel portion, and the pixel portion has a plurality of pixels. Each of the plurality of pixels has an EL element, a first EL driver TFT, a second EL dr ...


4
Shunpei Yamazaki, Toshimitsu Konuma, Jun Koyama, Kazutaka Inukai, Mayumi Mizukami: Electronic device. Semiconductor Energy Laboratory, Cook Alex McFarron Manzo Cummings & Mehler, May 7, 2002: US06384427 (127 worldwide citation)

To provide an electronic device capable of bright image display. A pixel is structured such that a switching TFT and a current controlling TFT are formed on a substrate and an EL element is electrically connected to the current controlling TFT. A gate capacitor formed between a gate electrode of the ...


5
Kazutaka Inukai: Electronic device. Semiconductor Energy Laboratory, Cook Alex McFarron Manzo Cummings & Mehler, April 15, 2003: US06548960 (126 worldwide citation)

To provide an electronic device capable of suppressing a luminous amount of an EL element and realizing a large number of gray-scale levels. The electronic device is characterized in that the luminescence of the EL element is controlled by a pair of EL driver TFTs, one of the pair of EL driver TFTs ...


6
Jun Koyama, Kazutaka Inukai: Self-luminous device and electric machine using the same. Semiconductor Energy Laboratory, Fish & Richardson P C, August 30, 2005: US06936846 (103 worldwide citation)

To provide a self-luminous device capable of clear, multi-gray scale, color display and an electric machine provided with the same. Gray scale display is attained by a time division driving method in which an EL element (109) provided in a pixel (104) is controlled to emit light or not to emit light ...


7
Kazutaka Inukai: Light-emitting device and method of driving the same. Semiconductor Energy Laboratory, Cook Alex McFarron Manzo Cummings & Mehler, June 21, 2005: US06909243 (87 worldwide citation)

A novel driving method for conducting gradation display is provided. Also, a signal line driver circuit is provided which includes a current source circuit having a small area. Further, miniaturization and reduction in size of a frame of a light-emitting device can be attained. A gate selection peri ...


8
Kazutaka Inukai: Electronic device. Semiconductor Energy Laboratory, Cook Alex McFarron Manzo Cummings & Mehler, September 26, 2006: US07113154 (83 worldwide citation)

To provide an active matrix electronic device capable of performing clear color gray-scale display. The electronic device is characterized in that a plurality of pixels composing a pixel portion is surrounded by a source signal line, a first gate signal line, a second gate signal line, and a power s ...


9
Shunpei Yamazaki, Toshimitsu Konuma, Jun Koyama, Kazutaka Inukai, Mayumi Mizukami: Electro luminescence display device. Semiconductor Energy Laboratory, Cook Alex McFarron Manzo Cummings & Mehler, June 17, 2003: US06580094 (77 worldwide citation)

There is provided an electronic device having high reliability and high color reproducibility. A pixel structure is made such that a switching FET (


10
Shunpei Yamazaki, Toshimitsu Konuma, Jun Koyama, Kazutaka Inukai, Mayumi Mizukami: Electronic device. Semiconductor Energy Laboratory, Cook Alex McFarron Manzo Cummings & Mehler, December 30, 2003: US06670637 (71 worldwide citation)

To provide an electronic device capable of bright image display. A pixel is structured such that a switching TFT and a current controlling TFT are formed on a substrate and an EL element is electrically connected to the current controlling TFT. A gate capacitor formed between a gate electrode of the ...