公开(公告)号：EP0493659A2

公开(公告)日：1992-07-08

申请号：EP91118320.0

申请日：1991-10-28

申请人： International Business Machines Corporation

发明人： Dhong, Sang Hoo ,  Hwang, Wei ,  Taira, Yoichi

IPC分类号： G11C11/408 ,  G11C8/00

CPC分类号： H03K5/023 ,  G11C11/4085

摘要： 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).

摘要翻译： 示出了用于DRAM的字线驱动器电路，该电路包括具有耦合到字线（60）的一个触点的PMOS晶体管结构（58），耦合到负电压源的第二触点和耦合到控制输入的栅极 晶体管具有围绕栅极，第一和第二触点的N阱（64）。 隔离结构（66）围绕N阱（64）定位，以使其能够与周围的N阱结构（64）分开控制。 脉冲电路（52）耦合到晶体管（58），用于在激活时施加使字线（60）转变到更负的电位的电位。 还提供偏置电路用于使N阱（64）偏置在第一电位和第二较低电位，当脉冲电路（52）被激活时施加的第二较低电位。 结果，使PMOS晶体管（58）中的身体效应最小化，同时能够将升压电位施加到字线（60）。

公开(公告)号：EP0649049A2

公开(公告)日：1995-04-19

申请号：EP94307640.6

申请日：1994-10-18

申请人： International Business Machines Corporation

发明人： Taira, Yoichi

IPC分类号： G02F1/37

CPC分类号： G02F1/37 ,  G02F2001/3546

摘要： The wavelength converting device comprises a BBO crystal of length L along the propagation direction of incident light C and a filter transmitting only light E by second harmonic generation. The BBO crystal is composed of 10 pieces of crystal equally divided in parallel planes along the propagating direction of the light. Each crystal piece has a crystal axis respectively and is positioned with the crystal angle satisfying a phase matching condition for second harmonic generation and so that the adjacent crystal axis is oriented in a crystallographically different way. The acceptance angle φ in the insensitive direction becomes the same as the acceptance angle ϑ in the sensitive direction; therefore, there is no necessity for gathering light to an oval shape, and maximum conversion efficiency can be obtained by gathering light with a conventional spherical lens.

公开(公告)号：EP0517518A2

公开(公告)日：1992-12-09

申请号：EP92305129.6

申请日：1992-06-04

申请人： International Business Machines Corporation

发明人： Taira, Yoichi

IPC分类号： G02F1/37 ,  H01S3/108 ,  H01S3/109

CPC分类号： G02F1/37 ,  G02B27/09 ,  G02B27/0911 ,  G02F2001/3542

摘要： 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.

摘要翻译： 一种用于相干光的波长转换的方法和装置，其可以防止波长转换元件（14）的光学破坏并实现高波长转换效率。 本发明的相干光的波长转换装置具有用于将输入的相干光聚焦在光学腔（15）中的波长转换元件上的光学聚焦系统，该光学聚焦系统使光束的横截面形状 非圆形，优选椭圆形。

公开(公告)号：EP0649049A3

公开(公告)日：1996-05-01

申请号：EP94307640.6

申请日：1994-10-18

申请人： International Business Machines Corporation

发明人： Taira, Yoichi

IPC分类号： G02F1/37

CPC分类号： G02F1/37 ,  G02F2001/3546

摘要： The wavelength converting device comprises a BBO crystal of length L along the propagation direction of incident light C and a filter transmitting only light E by second harmonic generation. The BBO crystal is composed of 10 pieces of crystal equally divided in parallel planes along the propagating direction of the light. Each crystal piece has a crystal axis respectively and is positioned with the crystal angle satisfying a phase matching condition for second harmonic generation and so that the adjacent crystal axis is oriented in a crystallographically different way. The acceptance angle φ in the insensitive direction becomes the same as the acceptance angle ϑ in the sensitive direction; therefore, there is no necessity for gathering light to an oval shape, and maximum conversion efficiency can be obtained by gathering light with a conventional spherical lens.

摘要翻译： 波长转换装置包括沿着入射光C的传播方向的长度为L的BBO晶体和仅通过二次谐波发生的光E的滤光器。 BBO晶体由沿着光的传播方向平行分布的10个晶体构成。 每个晶片分别具有晶轴，并且以满足相位匹配条件的晶体角度定位用于二次谐波产生，并且使得相邻晶体轴以晶体学上不同的方式定向。 不敏感方向的接受角度phi与敏感方向上的接受角度θ相同; 因此，不需要将光聚集成椭圆形，并且通过用常规的球面透镜聚光可以获得最大的转换效率。

公开(公告)号：EP0587330A1

公开(公告)日：1994-03-16

申请号：EP93306539.3

申请日：1993-08-18

申请人： International Business Machines Corporation

发明人： Taira, Yoichi

IPC分类号： H01S3/109 ,  G02F1/37 ,  G02B5/04

CPC分类号： H01S3/109 ,  G02B5/04 ,  G02F1/37 ,  G02F2001/3509

摘要： A wavelength conversion apparatus utilizes a nonlinear optical element or a focusing lens element to spatially separate light generated by the nonlinear optical element from the fundamental wave. For example, a cylindrical lens (13) for adjusting the size of the light beam is placed at least behind a wavelength conversion nonlinear optical crystal (12), and a light beam from the crystal (12) is passed through the lens near its edge, at a distance, from the central axis of the lens (13). The light beam is subject to a prism effect, and the generated beam B is separated from fundamental wave A as a result of the refractive index dispersion of the lens (13), and is transmitted.

摘要翻译： 波长转换装置利用非线性光学元件或聚焦透镜元件将由非线性光学元件产生的光与基波空间分离。 例如，用于调整光束尺寸的柱面透镜（13）至少位于波长转换非线性光学晶体（12）的后方，并且来自晶体（12）的光束在其边缘附近通过透镜 距镜头（13）的中心轴一定距离。 光束受到棱镜效应，并且由于透镜（13）的折射率色散，所产生的光束B与基波A分离，并被透射。

公开(公告)号：EP0493659A3

公开(公告)日：1993-03-24

申请号：EP91118320.0

申请日：1991-10-28

申请人： International Business Machines Corporation

发明人： Dhong, Sang Hoo ,  Hwang, Wei ,  Taira, Yoichi

IPC分类号： G11C11/408 ,  G11C8/00

CPC分类号： H03K5/023 ,  G11C11/4085

摘要： 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).

公开(公告)号：EP0493659B1

公开(公告)日：1997-05-28

申请号：EP91118320.0

申请日：1991-10-28

申请人： International Business Machines Corporation

发明人： Dhong, Sang Hoo ,  Hwang, Wei ,  Taira, Yoichi

IPC分类号： G11C11/408 ,  G11C8/00

CPC分类号： H03K5/023 ,  G11C11/4085

公开(公告)号：EP0708354A1

公开(公告)日：1996-04-24

申请号：EP95306632.1

申请日：1995-09-20

申请人： International Business Machines Corporation

发明人： Hasegawa, Masaki ,  Taira, Yoichi

IPC分类号： G02F1/1337

CPC分类号： G02F1/133753 ,  G02F1/13378 ,  G02F1/133784 ,  G02F1/133788 ,  G02F2001/133761

摘要： Disclosed is a liquid crystal display device (10) that is fabricated by simple procedures and that has a preferable viewing angular characteristic.
Polyimide is almost uniformly coated on a colour filter substrate (12) and a TFT substrate (14) to form an orientation film (S1) (20). A rubbing process is performed for both substrates (S2). Ultraviolet light, which is linearly polarized in the direction that follows the rubbing direction, is irradiated to the substrates to which the rubbing process has been performed (S3). The side chain of polyimide, which is in the direction that follows the linearly polarizing direction, is then cut off. The side chain of polyimide that concerns only the pretilt angle of liquid crystal (16) can be cut off and the pretilt angle of liquid crystal can be accordingly changed. The substrates are located opposite with a predetermined cell gap, and their surrounding is sealed and liquid crystal is introduced between the substrates (S4 and S5). Then, polarizing plates are fixed to the external surfaces and a liquid crystal display device is thus provided (S6).

摘要翻译： 公开了一种液晶显示装置（10），其通过简单的程序制造并且具有优选的视角特性。 将聚酰亚胺几乎均匀地涂覆在彩色滤光片基板（12）和TFT基板（14）上以形成取向膜（S1）（20）。 对两个基板进行摩擦处理（S2）。 在摩擦处理后的基板上照射沿着摩擦方向线性偏振的紫外光（S3）。 然后切断沿着直线偏振方向的方向的聚酰亚胺的侧链。 可以切断仅涉及液晶（16）的预倾角的聚酰亚胺的侧链，并且可以相应地改变液晶的预倾角。 基板与预定的单元间隙相对地定位，并且它们的周围被密封并且液晶被引入到基板之间（S4和S5）。 然后，将偏光板固定到外表面，并由此提供液晶显示装置（S6）。

公开(公告)号：EP0595747A3

公开(公告)日：1995-04-26

申请号：EP93480137.4

申请日：1993-09-21

申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION

发明人： Dhong, Sang Hoo ,  Shin,Hyun Jong ,  Taira, Yoichi ,  Kirihata, Toshiaki ,  Sunaga, Toshio ,  Terman, Lewis Madison

IPC分类号： G11C11/409

CPC分类号： G11C11/4094

摘要： A sensing technique uses a variable precharge voltage sensing with a single bitline swing in a DRAM cell or array of DRAM cells so that the power dissipation is reduced. The bitline precharge voltage varies from one RAS cycle to the next RAS cycle depending upon the level of the data in the accessed cells. Such an arrangement eliminates the need for a reference voltage generator since the precharge voltage is not the same voltage for each RAS cycle.

摘要翻译： 感测技术在DRAM单元或DRAM单元阵列中使用具有单个位线摆动的可变预充电电压感测，从而降低功耗。 位线预充电电压从一个RAS周期变化到下一个RAS周期，这取决于所访问的单元中的数据的电平。 这样的布置消除了对参考电压发生器的需要，因为预充电电压对于每个RAS周期不是相同的电压。

公开(公告)号：EP0689087A1

公开(公告)日：1995-12-27

申请号：EP95304216.5

申请日：1995-06-19

申请人： International Business Machines Corporation

发明人： Taira, Yoichi

IPC分类号： G02F1/37

CPC分类号： G02F1/39 ,  G02F1/3534 ,  G02F1/37 ,  G02F2001/3542

摘要： Provided is a structure for efficiently converting the wavelength of light without the need for complicated adjustment.
A wavelength conversion device 10 comprises a laser device 12 for radiating light beams, a collimeter lens system 18 including lenses 14, 16 for adjusting the wavefront and diameter of a light beam to condense light, a resonator 26 comprising mirrors 22, 24 of the same radius of curvature, and a crystal 20 located inside the resonator 26 near beam-condensing sites and having a large receptive angle. The resonator 26 is a confocal resonator wherein the focus and center of curvature of the mirror 22 are equal to those of the mirror 24 and the radius of curvature of the mirrors 22, 24 exceeds the curvature of the wavefront of light beams from the collimeter lens system 18. Therefore, when a light beam is reflected from the mirrors 22, 24, the curvature of its wavefront is changed and an SHG light comprising only light beams that pass through the forward path is output efficiently.

摘要翻译： 提供了一种用于有效地转换光的波长而不需要复杂调整的结构。 波长转换装置10包括用于照射光束的激光装置12，包括用于调节光束的波前和直径以使光缩小的透镜14,16的碰撞透镜系统18，包括相同的反射镜22,24的谐振器26 曲率半径和位于谐振器26内部的光束聚集位置附近并且具有大的接收角的晶体20。 谐振器26是共焦共振器，其中反射镜22的焦点和曲率中心等于反射镜24的焦点和曲率中心，并且反射镜22,24的曲率半径超过来自碰撞透镜的光束的波前的曲率 因此，当光束从反射镜22,24反射时，其波前的曲率改变，并且仅包括穿过正向路径的光束的SHG光被有效地输出。