Author
Kousai Takamasa
Bio: Kousai Takamasa is an academic researcher. The author has contributed to research in topics: Liquid-crystal display & Layer (electronics). The author has an hindex of 2, co-authored 2 publications receiving 180 citations.
Papers
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Patent•
27 May 1997
TL;DR: In this article, a liquid crystal display device including a display section including a liquid-crystal layer, pixel electrodes located in a matrix on one of the pair of substrates, a plurality of first thin film transistors respectively connected to the plurality of pixel electrodes, and a peripheral driving circuit located for driving the display section, the peripheral drive circuit being located on the substrate on which the first thin-film transistors are located and having a second thin film transistor.
Abstract: A liquid crystal display device including: a display section including a liquid crystal layer; a pair of substrates interposing the liquid crystal layer; a plurality of pixel electrodes located in a matrix on one of the pair of substrates; a plurality of first thin film transistors respectively connected to the plurality of pixel electrodes; and a peripheral driving circuit located for driving the display section, the peripheral driving circuit being located on the substrate on which the first thin film transistors are located and having a second thin film transistor. Each of the first thin film transistors includes a first channel layer formed of a first crystalline silicon layer, and the second thin film transistor includes a second channel layer formed of a second crystalline silicon layer having a higher mobility than the mobility of the first crystalline silicon layer. The second crystalline silicon layer includes a catalytic element for promoting crystallization.
178 citations
Patent•
16 Jun 1999
TL;DR: In this paper, a liquid crystal display device including a display section including a liquid-crystal layer, pixel electrodes located in a matrix on one of the pair of substrates, a plurality of first thin film transistors respectively connected to the plurality of pixel electrodes, and a peripheral driving circuit located for driving the display section, the peripheral drive circuit being located on the substrate on which the first thin-film transistors are located and having a second thin film transistor.
Abstract: A liquid crystal display device including: a display section including a liquid crystal layer; a pair of substrates interposing the liquid crystal layer; a plurality of pixel electrodes located in a matrix on one of the pair of substrates; a plurality of first thin film transistors respectively connected to the plurality of pixel electrodes; and a peripheral driving circuit located for driving the display section, the peripheral driving circuit being located on the substrate on which the first thin film transistors are located and having a second thin film transistor. Each of the first thin film transistors includes a first channel layer formed of a first crystalline silicon layer, and the second thin film transistor includes a second channel layer formed of a second crystalline silicon layer having a higher mobility than the mobility of the first crystalline silicon layer. The second crystalline silicon layer includes a catalytic element for promoting crystallization.
2 citations
Cited by
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Patent•
01 Aug 2008
TL;DR: In this article, the oxide semiconductor film has at least a crystallized region in a channel region, which is defined as a region of interest (ROI) for a semiconductor device.
Abstract: An object is to provide a semiconductor device of which a manufacturing process is not complicated and by which cost can be suppressed, by forming a thin film transistor using an oxide semiconductor film typified by zinc oxide, and a manufacturing method thereof. For the semiconductor device, a gate electrode is formed over a substrate; a gate insulating film is formed covering the gate electrode; an oxide semiconductor film is formed over the gate insulating film; and a first conductive film and a second conductive film are formed over the oxide semiconductor film. The oxide semiconductor film has at least a crystallized region in a channel region.
1,501 citations
Patent•
17 Jan 2006
TL;DR: In this article, the authors propose a technique by which a pattern of wirings or the like which is partially constitutes a semiconductor device or a display device can be formed with a desired shape with controllability.
Abstract: To provide a semiconductor device and a display device which can be manufactured through a simplified process and the manufacturing technique. Another object is to provide a technique by which a pattern of wirings or the like which is partially constitutes a semiconductor device or a display device can be formed with a desired shape with controllability.
1,043 citations
Patent•
08 Jan 2003
TL;DR: In this article, the surface of a source signal line or a power supply line in a pixel portion is plated to reduce a resistance of a wiring, and a terminal is similarly plated in order to make the resistance reduction.
Abstract: There is provided a light emitting device in which low power consumption can be realized even in the case of a large screen. The surface of a source signal line or a power supply line in a pixel portion is plated to reduce a resistance of a wiring. The source signal line in the pixel portion is manufactured by a step different from a source signal line in a driver circuit portion. The power supply line in the pixel portion is manufactured by a step different from a power supply line led on a substrate. A terminal is similarly plated to made the resistance reduction. It is desirable that a wiring before plating is made of the same material as a gate electrode and the surface of the wiring is plated to form the source signal line or the power supply line.
806 citations
Patent•
08 Jan 2003
TL;DR: In this paper, an active matrix display (AMD) with pixel electrodes, gate wirings and source wires is proposed, in which pixel electrodes are arranged in the pixel portions to realize a high numerical aperture without increasing the number of masks or the amount of steps.
Abstract: An active matrix display device having a pixel structure in which pixel electrodes, gate wirings and source wirings are suitably arranged in the pixel portions to realize a high numerical aperture without increasing the number of masks or the number of steps. The device comprises a gate electrode and a source wiring on an insulating surface, a first insulating layer on the gate electrode and on the source wiring, a semiconductor layer on the first insulating film, a second insulating layer on the semiconductor film, a gate wiring connected to the gate electrode on the second insulating layer, a connection electrode for connecting the source wiring and the semiconductor layer together, and a pixel electrode connected to the semiconductor layer.
432 citations
Patent•
13 Feb 2001
TL;DR: In this article, an electro-optical device having a plurality of pixels, including a majority of EL elements, provides a gray-scale display by controlling a period of time at which the plurality of the EL elements emit light in one frame period, and a polarity of an EL driving voltage, which is a difference between the potentials applied to the first and second electrodes, is inverted for each one-frame period.
Abstract: An electro-optical device having a plurality of pixels including a plurality of EL elements, wherein the electro-optical device provides a gray scale display by controlling a period of time at which the plurality of the EL elements emit light in one frame period; the plurality of the EL elements have a first electrode and a second electrode; the first electrode is held at a constant potential; and a potential of the second electrode changes in such a manner that a polarity of an EL driving voltage, which is a difference between the potentials applied to the first and second electrodes, is inverted for each one frame period.
370 citations