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1. 发明公开

EP0897128A4 OPTICAL DEVICE AND ITS MANUFACTURING METHOD 失效
标题翻译：光学器件及其制造方法
公开(公告)号：EP0897128A4
公开(公告)日：2000-09-27
申请号：EP98901077
申请日：1998-01-30
申请人： SONY CORP
发明人： UDAKA TOORU , MIYAGAKI HIDEHARU , YAMADA SHINICHIRO , IMOTO HIROSHI , KAWABATA MASARU
IPC分类号： G02F1/19 , G02F1/15 , G02F1/155 , G02F1/17
CPC分类号： G09G3/38 , G02F1/1506 , G02F1/155 , G02F2201/121
摘要： Counter electrodes (17a and 17b) of ITO working electrodes (2a-2e and 3a-3e) are made of a sintered body which are obtained by sintering a conductive paste prepared by dispersing silver or carbon conductive particles in a binder, or by sintering silver or carbon conductive particles. Therefore the counter electrodes (17a and 17b) do not have angular portions where concentration of electric field may occur. By using this method, the material cost of the counter electrodes of an optical filter whose light transmissivity is controlled by utilizing the precipitation of silver onto an ITO transparent electrode from a silver salt solution can be reduced. Silver particles which may contaminate the silver salt solution, lower the transparency of the element and cause short-circuit between electrodes are prevented from precipitate on the counter electrodes.

2. 发明专利

JPH075497A OPTICAL FILTER 失效
公开(公告)号：JPH075497A
公开(公告)日：1995-01-10
申请号：JP26977293
申请日：1993-10-01
申请人： SONY CORP
发明人： UDAKA TOORU , NODA KAZUHIRO , YASUDA AKIO , WATANABE HARUO , HIKUMA KOICHIRO
IPC分类号： G02F1/15
摘要： PURPOSE:To obtain a nonlight-emitting type optical filter using a RED material which consumes low electric power and is suitable for a visible ray region by forming such a reversible system that silver from silver salt is precipitated on an electrode or dissolved by driving and controlling electrodes facing to each other. CONSTITUTION:This optical filter 10 has transparent substrates 4, 5 which constitute a cell as a display window and working electrodes 2, 3 on the inner surfaces of substrates facing to each other. At least one of the electrodes acts as a coloring electrode or color-erasing electrode. counter electrodes 6 are provided to serve also as spacers. A RED liquid 1 containing silver (complex) salt is sealed between electrodes 2, 3. One of the electrodes 2, 3 is used as an anode and the other is used as a cathode. DC driving voltage is applied between these a specified time to cause oxidation-reduction reaction of silver (complex) salt on the cathode side to precipitate Ag. Thus, a transparent state is changed into a colored state. By precipitating Ag on the electrode, a specified color (depending on the silver complex salt used) is observed through the display window and the RED can be used as a filter material.

3. 发明专利

JPH08136957A OPTICAL FILTER 失效
公开(公告)号：JPH08136957A
公开(公告)日：1996-05-31
申请号：JP30325094
申请日：1994-11-11
申请人： SONY CORP
发明人： UDAKA TOORU , MIYAGAKI EIJI
IPC分类号： G02B5/20 , G02F1/15
摘要： PURPOSE: To obtain an optical filter adequate for a visible light region of a non-light emission type with low electric power consumption by using a RED liquid contg. a silver salt as a filter material for adjusting light quantity and forming a reversible system which precipitates and dissolves silver on electrodes by driving control of counter electrodes. CONSTITUTION: The counter electrodes disposed on transparent substrates 4, 5 are respectively divided to central parts 2a, 3a and annular electrodes 2b, 3b to 2e, 3e disposed concentrically around these parts. The circumferences of 2e, 3e are provided with the counter electrodes 6A, 6B of the silver. The respective electrodes are connected to respective driving sources. The transparent substrates 4, 5 are disposed at prescribed intervals by spacers 7 and the RED liquid 1 is enclosed therebetween. The RED liquid 1 is controlled in oxidation reduction reaction according to impressed voltages and, therefore, the precipitation quantity of the silver on the cathodes of the respective divided electrodes is changeable by the impressed voltages. Then, the control of various densities with various patterns by the impressed voltages on the divided electrodes is possible and the effective utilization as the optical filter is possible.

4. 发明专利

JPH08334791A OPTICAL DEVICE AND ELECTROLYTIC SOLUTION 失效
公开(公告)号：JPH08334791A
公开(公告)日：1996-12-17
申请号：JP15984295
申请日：1995-06-02
申请人： SONY CORP
发明人： MIYAGAKI EIJI , UDAKA TOORU , NODA KAZUHIRO , HIKUMA KOICHIRO
IPC分类号： G02F1/15
摘要： PURPOSE: To obtain such an optical device that can be driven at low electric power consumption and has excellent long-term storage stability and that the transmittance for light in a visible ray region can be controlled, spectral characteristics are good when the device is shielded from light, and coloring or deterioration of an electrolytic soln. is not caused when silver is dissolved, by using a reversible system in which silver is precipitated on an electrode from silver bromide or dissolved from the electrode. CONSTITUTION: A soln. prepared by dissolving silver bromide in a solvent is disposed between electrodes facing each other to precipitate or dissolve silver by driving and controlling these electrodes. In this case, a RED soln. having 0.03-2.0mol/L silver bromide is preferably used. Further, an additive selected from among brightener, complexing agent and reducing agent is added to the soln. For example, a brightener selected from among thiourea, mercaptobenzoimidazole, etc., is used. A complexing aqent selected from among phthalic acid, succinic acid, etc., is used. A reducing agent selected from among ascorbic acid, tartaric acid, etc., is used.

5. 发明专利

JPH06301065A OPTICAL FILTER 失效
公开(公告)号：JPH06301065A
公开(公告)日：1994-10-28
申请号：JP11395793
申请日：1993-04-16
申请人： SONY CORP
发明人： UDAKA TOORU , YASUDA AKIO
IPC分类号： G02F1/15
摘要： PURPOSE:To provide an optical filter with gradations by changing the various densities at the time of coloring an electrochromic material by controlling driving of a counter electrode. CONSTITUTION:A pair of transparent substrates 4, 5 constituting the cell of the optical filter 10 are arranged as a display window apart a specified spacing and the inside surfaces of the respective substrate are provided with working electrodes 2, 3. The substrates 4, 5 are provided with a counter electrode 6 consisting of a platinum plate in common use as a spacer over the entire periphery thereof. An EC liquid 1 contg. plural biologen compds. varying in absorption wavelength from each other is encapsulated between the electrodes 2 and 3. The biologen compds. induce an oxidation reduction reaction and prescribed dyestuff are precipitated on the cathode when a driving voltage is applied between the working electrodes 2 and 3. The various densities of the coloration change with the magnitude of the voltage or the application time thereof and the optical filter is functioned as a transmission variable filter by controlling the change.

6. 发明专利

JPH08262501A OPTICAL DEVICE AND ELECTROLYTE 失效
公开(公告)号：JPH08262501A
公开(公告)日：1996-10-11
申请号：JP8754995
申请日：1995-03-20
申请人： SONY CORP
发明人： UDAKA TOORU , MIYAGAKI EIJI , NODA KAZUHIRO , HIKUMA KOICHIRO
IPC分类号： G02F1/15 , G02F1/17
摘要： PURPOSE: To obtain an optical device adequate for a visible light region of a non-light emission type with low electric power consumption by arranging a soln. prepd. by dissolving silver chloride into a solvent between counter electrodes and allowing the precipitation and dissolution to occur by driving control of these electrodes. CONSTITUTION: A pair of transparent substrate constituting a cell are arranged as a display window 4, 5 with a specified spacing in an optical filter 10. The inside surfaces of the respective substrates are provided with the ITO electrodes 2 and 3 at least one of which are electrodes for coloration to face each other. A RED liquid 1 prepd. by dissolving the silver chloride into a nonaq. solvent is sealed as the RED material between the ITO electrodes 2 and 3 in contact with these electrodes. A DC driving voltage is impressed between the ITO electrodes 2 and 3, at least either of which as anode and the other as cathode, for the prescribed period of time, by which the oxidation-reduction reaction of Ag +e Ag is effected at the silver salt on the cathode side. The transparent sate is thus shifted to the colored state by Ag precipitate. The color is observable from display windows 4, 5 and the filter material is obtd.

7. 发明专利

JPH08136956A OPTICAL FILTER 失效
公开(公告)号：JPH08136956A
公开(公告)日：1996-05-31
申请号：JP30325194
申请日：1994-11-11
申请人： SONY CORP
发明人： UDAKA TOORU , MIYAGAKI EIJI , NODA KAZUHIRO
IPC分类号： G02F1/15
摘要： PURPOSE: To obtain a non-light-emitting optical filter which is appropriately used for light in the visible region and the power consumption of which is low by using a RED solution contg. a silver salt as a filter material for adjusting light quantity and forming a reversible system for depositing or dissolving silver on electrodes placed opposite to each other through controlling the drive of the electrodes. CONSTITUTION: This optical filter 10 is provided with a pair of transparent substrates 4 and 5 used as display windows and working electrodes 2 and 3 placed opposite to each other on the inner surfaces of the substrates 4 and 5 respectively. A RED solution 1 contg. a silver salt is filled into the space between the working electrodes 2 and 3 to allow the solution 1 to contact with these electrodes 2 and 3, which space is subsequently sealed. In the filter 10 having such a structure, the silver salt is subjected to redox reaction by applying a driving voltage between the working electrodes 2 and 3 for a prescribed period of time to deposit silver on the electrodes 2 and 3. A specific color of the silver deposit can be observed from each of the display windows 4 and 5 and thus, the filter material is formed. Since the filter effect due to this coloration, i.e., the transmissivity of visible light varies with the operating variables of the applied voltage and applied period of time of the voltage, this filter functions as a variable transmissivity filter by controlling these operating variables.

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