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1. 发明专利

JPH1195032A OPTICAL FILTER 失效
公开(公告)号：JPH1195032A
公开(公告)日：1999-04-09
申请号：JP25551597
申请日：1997-09-19
申请人： OKI ELECTRIC IND CO LTD
发明人： NOMOTO TSUTOMU
IPC分类号： G02B6/00
摘要： PROBLEM TO BE SOLVED: To provide a wave length dispersion compensating function for a luminous signal and a distribution function to an optional beam passage for the luminous signal. SOLUTION: This optical filter 10 is provided with one input port 12, two output ports 14a, 14b, two optical circulators 16a, 16b, and two FBGs(fiber Bragg grating) 18a, 18b. Respective optical circulators 16a, 16b are provided with the first ports (a), the second ports (b), and the third ports (c). Each optical circulator is constituted to output a luminous signal input to the first port (a) to the second port (b), and to output the luminous signal input to the second port (b) to the third port (c). The first port (a) in the first circulator 16a is connected to the input port 12. The third ports (c) in the respective circulators are connected to the respective output ports 14a, 14b. The second port (b) in the first optical circulator 16a and the first port (a) in the second optical circulator 16b are connected via the first FBG 18a. The end of the second FBG 18b is connected to the second port (b) in the second optical circulator 16b.

2. 发明专利

JPH06202148A THIN-FILM TRANSISTOR FOR LIQUID CRYSTAL DISPLAY DEVICE AND ITS PRODUCTION 失效
公开(公告)号：JPH06202148A
公开(公告)日：1994-07-22
申请号：JP34760292
申请日：1992-12-28
申请人： CASIO COMPUTER CO LTD , OKI ELECTRIC IND CO LTD
发明人： NOMOTO TSUTOMU , KAMATA HIDEKI , ONO ICHIRO
IPC分类号： G02F1/136 , G02F1/1368 , H01L29/78 , H01L29/786 , H01L29/784
摘要： PURPOSE:To provide the thin-film transistor(TFT) for a liquid crystal display device at a good yield without display defects by simple stages by preventing the overhang by ohmic barrier layers, thereby preventing line defects and spot defects and enhancing the reliability of connection to display electrodes and, a process for production of such TFT. CONSTITUTION:The drain electrode and source electrode of this TFT consist of a three-layered structure consisting of a first layer 29a of the source electrode and first layer 29b of the drain electrode which are the ohmic barrier layers with semiconductor layers 27a, 27b, a second layer 30b of the source electrode and second layer 30b of the drain electrode which consist of a low-resistance material and are main signal wiring layers, and a third layer 31a of the source electrode and third layer 31b of the drain electrode which are battery reaction preventive layers. Similarly the low-resistance data line consists of a three- layered structure consisting of a first layer data wiring 29c which is the ohmic barrier layer, a second layer data wiring 30c which consists of a low-resistance material and is the main wiring layer and a third layer data wiring 31c which is the battery reaction preventive layer.

3. 发明专利

JPH04299866A MANUFACTURE OF ACTIVE MATRIX LIQUID CRYSTAL DISPLAY 失效
公开(公告)号：JPH04299866A
公开(公告)日：1992-10-23
申请号：JP6458291
申请日：1991-03-28
申请人： OKI ELECTRIC IND CO LTD
发明人： NOMOTO TSUTOMU , OGURA SHIGEKI , NISHIKI TAMAHIKO , YOSHIZAWA YOSHIYO
IPC分类号： G02F1/136 , G02F1/1368 , H01L27/12 , H01L29/78 , H01L29/786
摘要： PURPOSE:To reduce the drop of a liquid crystal driving voltage, in a TFT array surface protecting film. CONSTITUTION:By using a plasma CVD method, a surface protecting film is formed of a tantalum oxide film having high permittivity (20-30). Thereby the voltage drop in the surface protecting film is reduced to 1/4, as compared with the conventional silicon nitride film or silicon oxide film.

4. 发明专利

JPH04299836A MANUFACTURE OF ACTIVE MATRIX LIQUID-CRYSTAL DISPLAY 失效
公开(公告)号：JPH04299836A
公开(公告)日：1992-10-23
申请号：JP6458391
申请日：1991-03-28
申请人： OKI ELECTRIC IND CO LTD
发明人： SHIYOU KAZUYUKI , NOMOTO TSUTOMU , YOSHIDA MAMORU , WATANABE NOBUAKI
IPC分类号： G02F1/1343 , G02F1/136 , G02F1/1368 , H01L21/336 , H01L29/78 , H01L29/786
摘要： PURPOSE:To manufacture a TFT whose ON current is large and whose OFF current is small by accurately etching an n -a-Si ohmic layer. CONSTITUTION:When an n -a-Si ohmic layer is dry-etched by using an RIE method (a reactive ion etching method), the layer is first etched under conditions attaching great importance to uniformity and, when it is approached to the end point of its etching operation, it is etched under conditions attaching great importance to selectivity.

5. 发明专利

JPH04276722A ACTIVE MATRIX DRIVING TYPE LIQUID CRYSTAL DISPLAY 失效
公开(公告)号：JPH04276722A
公开(公告)日：1992-10-01
申请号：JP3765291
申请日：1991-03-05
申请人： OKI ELECTRIC IND CO LTD
发明人： NISHIKI TAMAHIKO , YOSHIZAWA YOSHIYO , OGURA SHIGEKI , NOMOTO TSUTOMU
IPC分类号： G02F1/1335 , G02F1/136 , G02F1/1368 , G09F9/00 , G09F9/30
摘要： PURPOSE:To prevent the generation of the light leakage near data lines and discrination lines of the active matrix driving type liquid crystal display. CONSTITUTION:This liquid crystal display is constituted by forming the shape of a counter electrode 9 (hatched part) as the assemblage of the stripe electrodes corresponding to picture element electrodes 6 to obviate the disposition of the counter electrode on data lines 3. The black matrix on a counter electrode substrate is formed of an insulator. The electric field strength in the region alongside the data lines is decreased in this way and the unnecessary movement of liquid crystal molecules is suppressed, by which the generation of the light leakage and discrination lines is prevented.

6. 发明专利

JPH0437592B2 失效
公开(公告)号：JPH0437592B2
公开(公告)日：1992-06-19
申请号：JP2705283
申请日：1983-02-22
申请人： OKI ELECTRIC IND CO LTD
发明人： NOMOTO TSUTOMU , UCHAMA AKIRA
IPC分类号： H01L27/146 , H01L31/0216 , H01L31/10 , H01L31/101

7. 发明专利

JPH04121712A LIQUID CRYSTAL DISPLAY DEVICE 失效
公开(公告)号：JPH04121712A
公开(公告)日：1992-04-22
申请号：JP24199090
申请日：1990-09-12
申请人： OKI ELECTRIC IND CO LTD
发明人： OGURA SHIGEKI , YOSHIDA MAMORU , NOMOTO TSUTOMU , SEKIDO MUTSUHIRO
IPC分类号： G02F1/136 , G02F1/133 , G02F1/1368 , G09F9/30 , G09G3/36 , H01L21/336 , H01L27/12 , H01L29/78 , H01L29/786
摘要： PURPOSE:To make the symmetric property of the waveform of a picture element signal better and to improve image quality by impressing a data signal having opposite polarity on an (n)th drain electrode and an (n+1)th drain electrode. CONSTITUTION:By facing one part of a picture element electrode 2 which receives the data signal from the (n)th drain line 4 to the (n+1)th drain line 4 by interposing a dielectric body, storing capacitance (n+1) is held. By impressing the data signal having the opposite polarity on the (n)th drain line 4 and the (n+1)th drain line 4, the voltage of a picture element is lowered to a negative side when it is positive and it is lowered to a positive side when it is negative. Then, the symmetric property of the waveform of the picture element signal is improved. Besides, by facing the other one part of the electrode 2 which receives the data signal from the (n)th drain line 4 to the (n)th of drain line 4 by interposing the dielectric body, the storing capacitance Cn is held and a voltage holding characteristic is more improved.

8. 发明专利

JPH04120521A LIQUID CRYSTAL DISPLAY DEVICE 失效
公开(公告)号：JPH04120521A
公开(公告)日：1992-04-21
申请号：JP24160590
申请日：1990-09-11
申请人： OKI ELECTRIC IND CO LTD
发明人： OGURA SHIGEKI , NISHIKI TAMAHIKO , NOMOTO TSUTOMU , SEKIDO MUTSUHIRO
IPC分类号： G02F1/1343 , G02F1/133 , G02F1/136 , G02F1/1368 , G09G3/36
摘要： PURPOSE:To improve image quality and to prevent the deterioration of a liquid crystal by impressing an AC signal which has the polarity reverse from the polarity of a gate pulse and falls upon rising of the gate pulse and rises upon falling of the gate pulse to an auxiliary electrode. CONSTITUTION:A liquid crystal layer is provided on a picture element electrode 2 and further a common electrode is provided thereon. The auxiliary electrode 7 having an auxiliary capacity is provided between this electrode and the picture element electrode 2. The AC signal which has the polarity reverse from the polarity of the gate pulse and falls upon rising of the gate pulse and rises upon falling of the gate pulse is applied to the auxiliary electrode 7 and the signal breaking through the picture element electrode 2 is offset by the gate pulse to decrease the shift quantity of a source signal waveform by the signal breaking through the picture element electrode by this AC signal. The image quality is improved and the deterioration of the liquid crystal is prevented.

9. 发明专利

JPH0467020A THIN FILM TRANSISTOR ARRAY 失效
公开(公告)号：JPH0467020A
公开(公告)日：1992-03-03
申请号：JP17831790
申请日：1990-07-05
申请人： OKI ELECTRIC IND CO LTD
发明人： NOMOTO TSUTOMU , NOBORI MASAHARU
IPC分类号： G02F1/1343 , G02F1/133 , G02F1/136 , G02F1/1362 , G02F1/1368
摘要： PURPOSE:To maintain the liquid crystal function of a liquid crystal display device for a long period and to improve the display quality by forming an electrode for auxiliary capacity of the same metal with a signal scanning electrode and also forming at least part of a dielectric layer of the oxide of the same metal with the signal scanning electrode. CONSTITUTION:The electrode 3 for auxiliary capacity is formed of the same metal with the signal scanning electrode 2 and the dielectric layer 4 is a metal oxide film formed by oxidizing the surface of the electrode 3 for auxiliary capacity. The electrode 3 for auxiliary capacity is formed of the material which hardly transmits light, so an aperture rate is preferably secured by reducing an area which overlaps with a picture element electrode 5 as much as possible and the electrode 3 is formed normally along the edge part of the picture element electrode 5. Consequently, the liquid crystal function of the liquid crystal display device can be maintained for a long period and the isplay uality can be improve.

10. 发明专利

JPH0426827A THIN-FILM TRANSISTOR ARRAY 失效
公开(公告)号：JPH0426827A
公开(公告)日：1992-01-30
申请号：JP13192990
申请日：1990-05-22
申请人： OKI ELECTRIC IND CO LTD
发明人： NOMOTO TSUTOMU
IPC分类号： G02F1/136 , G02F1/1368 , H01L29/78 , H01L29/786
摘要： PURPOSE:To obviate the generation of a display defect in a liquid crystal display device by laminating a silicon oxide film and silicon nitride film in this order on at least a part of the oxidized parts on gate electrodes as a gate insulating film. CONSTITUTION:The gate insulating film 14 is formed of the laminate of the three-layered structure consisting of the 1st gate insulating film 14a formed by partially anodizing the parts where the thin-film transistors of gate electrodes 12 are formed and the parts intersecting with the gate electrodes 11, the 2nd gate insulating film 14b consisting of the silicon oxide formed to cover this film and the 3rd gate insulating film 14c consisting of the silicon oxide formed thereon. The probability that a pinhole is generated at the same point of the respective layers is, therefore, extremely low and even if the pinhole is generated in one film, the pinhole is usually complemented by the other film laminated on the upper layer or lower layer of the pinholed point and, therefore, the insulation defect hardly arises. The liquid crystal device which decreases the display defects is obtd. in this way.

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