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公开(公告)号：CA2322598A1
公开(公告)日：2001-06-17
申请号：CA2322598
申请日：2000-10-06
Applicant: IBM
Inventor： TAIRA YOICHI
IPC: G02F1/137 , G02F1/1335 , G02F1/136 , G02F1/139
Abstract: It is the object of the present invention to provide the reflective guest-ho st LCD device of the low cost and the simple structure which realizes both the high contrast ratio and high reflectivity. A reflective liquid crystal display device of the present invention comprises: a first transparent substrate; a first electrode means disposed on one surface of th e first transparent substrate; a second transparent substrate having a first surface and a secon d surface; and a second electrode means disposed on the first surface of the second transparent substrate; wherein the first transparent substrate and the second transparent substrate are so arranged that the first electrode means and the second electrode means faces to each other and a spa ce is provided between the first electrode means and the second electrode means, a guest-ho st liquid crystal layer is disposed in the space, the first electrode means and the second electrode means define a plurality of picture element positions, and a reflector unit having a shape of a trigonal pyramid is disposed at each of the plurality of picture element positions on the second surface of the second transparent substrate. 17
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公开(公告)号：DE69126292D1
公开(公告)日：1997-07-03
申请号：DE69126292
申请日：1991-10-28
Applicant: IBM
Inventor： DHONG SANG HOO , HWANG WEI , TAIRA YOICHI
IPC: G11C11/407 , G11C11/408 , H01L21/76 , H01L21/8242 , H01L27/10 , H01L27/108 , H03K5/02 , G11C8/00
Abstract: A wordline driver circuit is shown for a DRAM, the circuit comprising a PMOS transistor structure (58) having one contact coupled to a wordline (60), a second contact coupled to a negative voltage supply and a gate coupled to a control input, the transistor having an N-well (64) about the gate, first and second contacts. An isolating structure (66) is positioned about the N-well (64) to enable it to be a separately controlled from surrounding N-well structures (64). Pulse circuits (52) are coupled to the transistor (58) for applying, when activated, a potential that enables the wordline (60) to transition to a more negative potential. A bias circuit is also provided for biasing the N-well (64) at a first potential and a second lower potential, the second lower potential applied when the pulse circuits (52) are activated. As a result, body effects in the PMOS transistor (58) are minimized while at the same time enabling a boost potential to be applied to the wordline (60).
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公开(公告)号：BR9202062A
公开(公告)日：1993-02-02
申请号：BR9202062
申请日：1992-05-29
Applicant: IBM
Inventor： TAIRA YOICHI
Abstract: A method and apparatus for wavelength conversion of coherent light which can prevent optical destruction of a wavelength conversion element (14) and achieve a high wavelength conversion efficiency. The apparatus for wavelength conversion of coherent lights in the present invention has an optical focusing system for focusing the input coherent light on the wavelength conversion element in an optical cavity (15), which optical focusing system makes the cross-sectional shape of a light beam non-circular, preferably, elliptical.
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公开(公告)号：CA2066000A1
公开(公告)日：1992-12-05
申请号：CA2066000
申请日：1992-04-14
Applicant: IBM
Inventor： TAIRA YOICHI
Abstract: JA9-91-520 AN APPARATUS FOR WAVELENGTH CONVERSION OF LASER LIGHT The object is to provide an apparatus for wavelength conversion of laser light which can prevent optical destruction of a wavelength conversion element and achieve a high wavelength conversion efficiency. The apparatus for wavelength conversion of laser lights in the present invention has an optical focusing system for focusing the input laser light on the wavelength conversion element in an optical cavity, which optical focusing system makes the cross-sectional shape of a light beam non-circular, preferably, elliptical.
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