NL8901481A - Passieve ferro-elektrisch vloeibaar kristal weergeefinrichting en werkwijze ter vervaardiging daarvan. - Google Patents
Passieve ferro-elektrisch vloeibaar kristal weergeefinrichting en werkwijze ter vervaardiging daarvan. Download PDFInfo
- Publication number
- NL8901481A NL8901481A NL8901481A NL8901481A NL8901481A NL 8901481 A NL8901481 A NL 8901481A NL 8901481 A NL8901481 A NL 8901481A NL 8901481 A NL8901481 A NL 8901481A NL 8901481 A NL8901481 A NL 8901481A
- Authority
- NL
- Netherlands
- Prior art keywords
- liquid crystal
- display device
- treatment
- low
- spread
- Prior art date
Links
- 239000005262 ferroelectric liquid crystals (FLCs) Substances 0.000 title claims description 9
- 238000000034 method Methods 0.000 title claims description 9
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 28
- 238000011282 treatment Methods 0.000 claims description 23
- 239000004973 liquid crystal related substance Substances 0.000 claims description 14
- 239000004990 Smectic liquid crystal Substances 0.000 claims description 12
- 230000005684 electric field Effects 0.000 claims description 8
- 230000007704 transition Effects 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 238000009826 distribution Methods 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 4
- 238000007669 thermal treatment Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 2
- 230000003746 surface roughness Effects 0.000 claims description 2
- 238000002834 transmittance Methods 0.000 claims description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims 1
- 230000007547 defect Effects 0.000 description 12
- 239000000463 material Substances 0.000 description 8
- 125000006850 spacer group Chemical group 0.000 description 4
- 241001270131 Agaricus moelleri Species 0.000 description 3
- 238000009827 uniform distribution Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000015654 memory Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000005577 local transmission Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/139—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
- G02F1/141—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent using ferroelectric liquid crystals
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
- G02F1/133753—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133371—Cells with varying thickness of the liquid crystal layer
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
- G02F1/133753—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle
- G02F1/133761—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle with different pretilt angles
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1339—Gaskets; Spacers; Sealing of cells
- G02F1/13392—Gaskets; Spacers; Sealing of cells spacers dispersed on the cell substrate, e.g. spherical particles, microfibres
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F2203/00—Function characteristic
- G02F2203/30—Gray scale
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Liquid Crystal (AREA)
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL8901481A NL8901481A (nl) | 1989-06-12 | 1989-06-12 | Passieve ferro-elektrisch vloeibaar kristal weergeefinrichting en werkwijze ter vervaardiging daarvan. |
| DE69015005T DE69015005T2 (de) | 1989-06-12 | 1990-06-06 | Passive ferroelektrische Flüssigkristall-Anzeigevorrichtung und Verfahren zur Herstellung derselben. |
| EP90201437A EP0402984B1 (de) | 1989-06-12 | 1990-06-06 | Passive ferroelektrische Flüssigkristall-Anzeigevorrichtung und Verfahren zur Herstellung derselben |
| US07/535,809 US5151804A (en) | 1989-06-12 | 1990-06-11 | Ferroelectric liquid crystal display having a spread of angles for grayscale and method of manufacture |
| KR1019900008503A KR910001436A (ko) | 1989-06-12 | 1990-06-11 | 액정 디스플레이 장치 및 그 제조방법 |
| JP2151799A JPH0325417A (ja) | 1989-06-12 | 1990-06-12 | 液晶装置及び表示装置 |
| HK170196A HK170196A (en) | 1989-06-12 | 1996-09-12 | Passive ferro-electric liquid crystal display device and method of manufacturing such a device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL8901481A NL8901481A (nl) | 1989-06-12 | 1989-06-12 | Passieve ferro-elektrisch vloeibaar kristal weergeefinrichting en werkwijze ter vervaardiging daarvan. |
| NL8901481 | 1989-06-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL8901481A true NL8901481A (nl) | 1991-01-02 |
Family
ID=19854816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL8901481A NL8901481A (nl) | 1989-06-12 | 1989-06-12 | Passieve ferro-elektrisch vloeibaar kristal weergeefinrichting en werkwijze ter vervaardiging daarvan. |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US5151804A (de) |
| EP (1) | EP0402984B1 (de) |
| JP (1) | JPH0325417A (de) |
| KR (1) | KR910001436A (de) |
| DE (1) | DE69015005T2 (de) |
| HK (1) | HK170196A (de) |
| NL (1) | NL8901481A (de) |
Families Citing this family (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5293544A (en) * | 1989-03-07 | 1994-03-08 | Canon Kabushiki Kaisha | Liquid crystal apparatus including panel having plural bent layers of liquid crystal molecules |
| JP2802685B2 (ja) * | 1991-01-08 | 1998-09-24 | キヤノン株式会社 | 強誘電性液晶装置 |
| US5347381B1 (en) * | 1991-01-25 | 1997-07-01 | Sharp Kk | Ferroelectric liquid crystal display device with molecules between hairpin and lightning defects following the lightning defects |
| JPH04258924A (ja) * | 1991-02-13 | 1992-09-14 | Canon Inc | カイラルスメクチック液晶素子およびその製造方法 |
| JP3076085B2 (ja) * | 1991-04-27 | 2000-08-14 | 株式会社半導体エネルギー研究所 | 液晶電気光学装置 |
| JP2713513B2 (ja) * | 1991-08-29 | 1998-02-16 | シャープ株式会社 | 液晶表示装置 |
| US5353141A (en) * | 1991-10-08 | 1994-10-04 | Canon Kabushiki Kaisha | Method for aligning treatment of liquid crystal device including varying with time the feeding speed of the rubbing roller |
| JP2877601B2 (ja) * | 1992-01-10 | 1999-03-31 | 松下電器産業株式会社 | 液晶表示装置とその製造法 |
| DE69320073T2 (de) * | 1992-01-24 | 1999-02-25 | Canon K.K., Tokio/Tokyo | Verfahren zur Behandlung einer chiralen smektischen Flüssigkristallvorrichtung |
| US5455695A (en) * | 1992-01-27 | 1995-10-03 | Canon Kabushiki Kaisha | Process for producing liquid crystal device including rubbing with two rubbing rollers rotating in same directions at different speeds |
| JPH05273554A (ja) * | 1992-01-29 | 1993-10-22 | Canon Inc | 強誘電性液晶素子 |
| TW476422U (en) * | 1992-01-29 | 2002-02-11 | Sharp Kk | Liquid crystal display |
| JP3456493B2 (ja) * | 1992-10-24 | 2003-10-14 | ソニー株式会社 | 液晶素子 |
| US5631752A (en) * | 1992-12-24 | 1997-05-20 | Casio Computer Co., Ltd. | Antiferroelectric liquid crystal display element exhibiting a precursor tilt phenomenon |
| US5781266A (en) * | 1993-09-27 | 1998-07-14 | Matsushita Electric Industrial Co., Ltd. | Ferroelectric liquid crystal display device and method for producing the same |
| US5510914A (en) * | 1993-11-15 | 1996-04-23 | The Regents Of The University Of Colorado | Smectic liquid crystal analog phase modulator |
| US5623354A (en) * | 1994-02-10 | 1997-04-22 | International Business Machines Corporation | Liquid crystal display with multi-domains |
| GB2293260B (en) * | 1994-09-19 | 1998-07-08 | Sharp Kk | Liquid crystal device |
| US5847799A (en) * | 1995-05-31 | 1998-12-08 | Casio Computer Co., Ltd. | Antiferroelectric liquid crystal display device |
| US5724116A (en) * | 1995-06-06 | 1998-03-03 | Citizen Watch Co., Ltd. | Liquid crystal panel with memory function |
| DE69625889D1 (de) * | 1995-07-03 | 2003-02-27 | Citizen Watch Co Ltd | Flüssigkristallvorrichtung |
| US6175401B1 (en) * | 1997-05-02 | 2001-01-16 | Casio Computer Co., Ltd. | Liquid crystal display device having a liquid crystal layer which contains liquid crystal molecules in a plurality of alignment state and method for driving the same |
| JP3551702B2 (ja) * | 1997-05-08 | 2004-08-11 | カシオ計算機株式会社 | 液晶表示素子とその駆動方法 |
| KR101500684B1 (ko) * | 2008-04-17 | 2015-03-10 | 삼성디스플레이 주식회사 | 캐리어 기판 및 이를 이용한 가요성 표시 장치의 제조 방법 |
| US8821970B2 (en) | 2009-05-22 | 2014-09-02 | Corning Incorporated | Slip agent for protecting glass |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1601601A (en) * | 1978-01-18 | 1981-11-04 | Standard Telephones Cables Ltd | Liquid crystal display cells |
| GB2173336B (en) * | 1985-04-03 | 1988-04-27 | Stc Plc | Addressing liquid crystal cells |
| JPH0723942B2 (ja) * | 1985-08-08 | 1995-03-15 | 株式会社半導体エネルギ−研究所 | 液晶装置 |
| SE8504761D0 (sv) * | 1985-10-14 | 1985-10-14 | Sven Torbjorn Lagerwall | Improvements of ferroelectric liquid crystal devices |
| JPS62124525A (ja) * | 1985-11-25 | 1987-06-05 | Semiconductor Energy Lab Co Ltd | 液晶装置 |
| JPS62159124A (ja) * | 1986-01-07 | 1987-07-15 | Semiconductor Energy Lab Co Ltd | 液晶装置 |
| US4796980A (en) * | 1986-04-02 | 1989-01-10 | Canon Kabushiki Kaisha | Ferroelectric liquid crystal optical modulation device with regions within pixels to initiate nucleation and inversion |
| US4932758A (en) * | 1987-09-17 | 1990-06-12 | Canon Kabushiki Kaisha | Ferroelectric smectic liquid crystal device having a bistable alignment state providing two stable orientation states |
| EP0310403B1 (de) * | 1987-09-29 | 1995-06-14 | Semiconductor Energy Laboratory Co., Ltd. | Elektrooptische Flüssigkristallvorrichtung |
| NL8703085A (nl) * | 1987-12-21 | 1989-07-17 | Philips Nv | Werkwijze voor het besturen van een weergeefinrichting. |
| EP0327071B1 (de) * | 1988-02-02 | 1995-05-03 | Seiko Epson Corporation | Elektro-optische Vorrichtung |
-
1989
- 1989-06-12 NL NL8901481A patent/NL8901481A/nl not_active Application Discontinuation
-
1990
- 1990-06-06 EP EP90201437A patent/EP0402984B1/de not_active Expired - Lifetime
- 1990-06-06 DE DE69015005T patent/DE69015005T2/de not_active Expired - Fee Related
- 1990-06-11 US US07/535,809 patent/US5151804A/en not_active Expired - Fee Related
- 1990-06-11 KR KR1019900008503A patent/KR910001436A/ko not_active Ceased
- 1990-06-12 JP JP2151799A patent/JPH0325417A/ja active Pending
-
1996
- 1996-09-12 HK HK170196A patent/HK170196A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE69015005D1 (de) | 1995-01-26 |
| HK170196A (en) | 1996-09-20 |
| DE69015005T2 (de) | 1995-06-22 |
| US5151804A (en) | 1992-09-29 |
| EP0402984A1 (de) | 1990-12-19 |
| KR910001436A (ko) | 1991-01-30 |
| JPH0325417A (ja) | 1991-02-04 |
| EP0402984B1 (de) | 1994-12-14 |
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