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1. 发明专利

JPS6252529A RUBBING TREATMENT TO CURVILINEAR SUBSTRATE OF LIQUID CRYSTAL CELL 失效
公开(公告)号：JPS6252529A
公开(公告)日：1987-03-07
申请号：JP19331285
申请日：1985-09-02
申请人： TOYOTA MOTOR CORP
发明人： FUKUOKA YUKO , OTSUKA YASUHIRO , UENO HIDEAKI , HAMAGUCHI SHIGEKI
IPC分类号： G02F1/133 , G02F1/1337 , G09F9/35
摘要： PURPOSE:To permit a uniform rubbing treatment by disposing at least a pair of transparent substrates having the curvature equal to the inside surface or outside surface of a rubbing roll to the inside and outside surfaces of the rubbing roll to grasp the rubbing roll, then rotating the rubbing roll. CONSTITUTION:A transparent electrode 2 of an ITO film essentially consisting of indium oxide and tin oxide or 'NESA(R)' film, etc. consisting of tin oxide is formed on the transparent substrate. An oriented film 3 is formed on such transparent electrode. The oriented film is formed of polyimide, silane coupling agent, chromium carboxylate complex, etc. The approximately cylindrical rubbing roll 12 having the curvature approximately equal to the curvature of the transparent substrates to be subjected to the rubbing treatment is used in the stage of applying the rubbing treatment directly onto the transparent substrates 1 or the oriented film. The rubbing treatment is, therefore, executed by installing the transparent substrates to the inside and outside surfaces of the rubbing roll and rotating the rubbing roll. The plural transparent substrates can be disposed in this stage. The uniform rubbing treatment is thereby executed.

2. 发明专利

JPS62180332A VARIABLE COLOR LIQUID CRYSTAL CELL 失效
公开(公告)号：JPS62180332A
公开(公告)日：1987-08-07
申请号：JP2338886
申请日：1986-02-05
申请人： TOYOTA MOTOR CORP
发明人： FUKUOKA YUKO , OTSUKA YASUHIRO , HAMAGUCHI SHIGEKI
IPC分类号： G02F1/133 , G02F1/137 , G02F1/139
摘要： PURPOSE:To obtain a prescribed color tone difference even by the same applied voltage, and also, to change it to other color tone, as well, by constituting a liquid crystal layer of two or more liquid crystal areas whose optical anisotropy (DELTAn) is different from each other. CONSTITUTION:On a liquid crystal receiver use container 18, a liquid crystal cell is held so as not to be immersed, and they are set to a vacuum injector. After pressure reduction and absorption, at the time of opening to the air, the liquid crystal cell 19 is made to descend to a position where it is immersed into a liquid crystal, and simultaneously, cocks 14, 15 are opened. A liquid crystal A in a container A12 decreases, a liquic crystal B of a container B13 flows into the container A12 and both the liquid crystals A, B are mixed. Accordingly, a mixture of both the liquid crystals is injected into the liquid crystal cell 19, also susequently, a mixed liquid crystal (namely, a mixed liquid crystal whose DELTAn is large gradually) in which a density of the liquid crystal B has become larger gradually is injected continuously into the liquid crystal cell, and in the end, the liquid crystal B is injected to the lowest end of the liquid crystal cell 19. Subsequently, a variable color liquid crystal cell is obtained by sticking a polarizing plate to cloth, on both sides of this liquid crystal element.

3. 发明专利

JPS62145217A RUBBING TREATMENT TO CURVED SUBSTRATE OF LIQUID CRYSTAL CELL 失效
公开(公告)号：JPS62145217A
公开(公告)日：1987-06-29
申请号：JP28613885
申请日：1985-12-19
申请人： TOYOTA MOTOR CORP
发明人： FUKUOKA YUKO , HAMAGUCHI SHIGEKI
IPC分类号： G02F1/1337 , G02F1/133 , G09F9/35
摘要： PURPOSE:To make a uniform rubbing treatment even to a transparent substrate having a curved shape by fixing the transparent substrate in the state of grasping a rubbing fabric between one projecting surface and other recessed surface of the transparent substrate then moving the rubbing fabric in a rubbing direction. CONSTITUTION:This oriented polyimide film 3 is subjected to the rubbing treatment by using a rubbing device 1. The endless rubbing fabric formed of a belt- like fabric having flexibility is held freely rotatably by a driving means on a treating table 13. A fixing jig 14 is provided on the treating base 13 so as to enclose part of the rubbing fabric 12. The 1st curved glass 15 which possesses the projecting surface having R=900 curvature is attached to the upper side sandwiching the rubbing fabric 12 of the fixing jig 14. On the other hand, the 2nd curved glass 16 which has the recess having R=100 curvature is attached to the lower side of the rubbing fabric 12. A roller 17 is rotated by a driving device in this state and the rubbing fabric 12 is rotated for 10 seconds at 50cm/ sec speed, by which the rubbing treatment is executed.

4. 发明专利

JPS62289811A GUEST-HOST TYPE LIQUID CRYSTAL CELL 失效
公开(公告)号：JPS62289811A
公开(公告)日：1987-12-16
申请号：JP13405686
申请日：1986-06-10
申请人： TOYOTA MOTOR CORP
发明人： FUKUOKA YUKO , HAMAGUCHI SHIGEKI
IPC分类号： G02F1/13 , G02F1/133 , G02F1/137 , G02F1/139
摘要： PURPOSE:To execute a display of a different coloring degree by adding a dyestuff to a liquid crystal consisting of two or more liquid crystal areas of each different dielectric anisotropy (DELTAepsilon), and changing an inclination of a dyestuff molecule together with a liquid crystal molecule at every area against an impressed voltage. CONSTITUTION:ITO electrodes 18a, 18b, and horizontal oriented films 20a, 20b are superposed on the inside of glass plates 12a, 12b, and a polarizing plate 22 is stuck to the outside. The glass plates are sealed up tightly 24 through a spacer and a liquid crystal is injected. A dichroic dyestuff 14 and mixed liquids A, B are put into containers 50a, 50b by an equal quantity, and the container 50b is stirred 58. An empty cell 10 is held on a liquid crystal reservoir 60, and after pressure reduction, the cell is immersed and a mixture of the liquid crystals A, B is injected at the time of opening an open air, and subsequently, density of the liquid crystal A increases gradually, the mixed liquid whose dielectric anisotropy has increased is injected continuously, and in the end, the liquid crystal A is injected. When 4V is applied to this cell, the whole surface is changed to black, and when the potential is changed by 0-4V, an area 28a of only the liquid crystal A is colored, and area 28b of only the liquid crystal B of the right end becomes transparent, and a display of a different coloring degree is obtained.

5. 发明专利

JPS62180330A FORMATION OF ORIENTED FILM 失效
公开(公告)号：JPS62180330A
公开(公告)日：1987-08-07
申请号：JP2338986
申请日：1986-02-05
申请人： TOYOTA MOTOR CORP
发明人： FUKUOKA YUKO , OTSUKA YASUHIRO , HAMAGUCHI SHIGEKI
IPC分类号： G02F1/1337 , G02F1/133
摘要： PURPOSE:To prevent repelling and to form an uniformly oriented film by executing solvent removal under the reduced pressure in a chamber for reduced pressure so that the solvent contained in an orienting agent can be quickly removed after development. CONSTITUTION:A polyimide liquid (5-10% solid and solvent N methyl-2- pyrolidone) is placed on a glass substrate 1 and thereafter a table 2 is rotated to spread the polyimide liquid on the glass substrate 1. A cock 5 for the reduced pressure chamber is opened to reduce the pressure in the chamber 3 for the reduced pressure by which the solvent contained in the polyimide liquid is quickly removed. The reduced pressure in the chamber 3 is then released and the fixing of the glass substrate 1 to the table 2 is released as well. The glass substrate 1 formed with the polyimide film on an ITO film is taken out of the chamber 3 and is heated. The oriented polyimide films are respectively formed on the ITO films of a pair (2 sheets) of the glass substrates with the ITO films in the above-mentioned manner; further, the glass substrates with the ITO films having the polyimide films are subjected to a rubbing treatment.

6. 发明专利

JPS62178925A METHOD AND DEVICE FOR FORMING ORIENTATION FILM 失效
公开(公告)号：JPS62178925A
公开(公告)日：1987-08-06
申请号：JP2169186
申请日：1986-02-03
申请人： TOYOTA MOTOR CORP
发明人： HAMAGUCHI SHIGEKI , OTSUKA YASUHIRO , FUKUOKA YUKO
IPC分类号： G02F1/1337 , G02F1/133
摘要： PURPOSE:To form an orientation film whose thickness is uniform, on the whole transparent substrate surface which is not a plane, such as a curved surface, etc., by making a solution containing an orientation processing agent adhere to the surface of a transparent substrate, spreading uniformly the solution by rotating the transparent substrate, and eliminating a solvent by heating. CONSTITUTION:From a discharge port of a discharge device 1, a polyimide solution of a prescribed quantity is dripped down onto a transparent glass 2, and a rotary table 3 is rotated by a motor, so that the polyimide solution is extended and spread over uniformly on the whole surface of the glass 2. Subsequently, the solution is spread uniformly, and simultaneously, a switch of a heater 5 is turned on, and also, a rotation of the rotary table is stopped quietly. In such a case, by turning on the heater 5, N-methyl-pyrolidone being a solvent is heated through a heat transfer by the glass 2, vaporized and eliminated. In such a way an oriented film whose thickness is uniform can be formed on the surface of the transparent substrate which is not a plane, such as a curved surface, etc., and phenomena such as an uneven display, a pin hole, etc. of a liquid crystal display element, which are generated due to a fact that thickness of the oriented film is ununiform can be prevented.

7. 发明专利

JPS63301905A PHASE CONTROL ELEMENT 失效
公开(公告)号：JPS63301905A
公开(公告)日：1988-12-08
申请号：JP13859987
申请日：1987-06-02
申请人： TOYOTA MOTOR CORP , TOYOTA CENTRAL RES & DEV
发明人： FUKUOKA YUKO , UENO HIDEAKI , HAMAGUCHI SHIGEKI , TAGA YASUNORI , MOTOHIRO TOMOMI
IPC分类号： G02B5/30 , G02F1/133 , G02F1/1335
摘要： PURPOSE:To provide excellent mechanical strength to a titled element and to prevent trouble such as exfoliation by forming a 1st diffused layer between a 1st layer and intermediate layer and a 2nd diffused layer between a 2nd layer and the intermediate layer. CONSTITUTION:The 1st layer 11 and 2nd layer 15 which are diagonally vapor deposited films are joined respectively via the 1st diffused layer 12 and the 2nd diffused layer 14 to the intermediate layer 13. Since the intermediate layer 13 is an isotropic transparent material, it exerts a less adverse influence on incident light and the effect of phase control is attained by the 1st layer 11 and the 2nd layer 15. Namely, the wavelength at which the light is circularly polarized is defined by the material quality of the 1st material and the 2nd material, the film thicknesses of the 1st layer 11 and the 2nd layer 15 and the angles at which the respective layers are deposited by evaporation. The intermediate layer 13 has the excellent mechanical strength and is securely joined to the 1st layer 11 and the 2nd layer 15 via the diffused layers 12, 14. The inter-layer exfoliation is thereby prevented and the element having the mechanical strength excellent as a whole is obtd.

8. 发明专利

JPS62288813A FORMATION OF ORIENTED LAYER FOR LIQUID CRYSTAL CELL 失效
公开(公告)号：JPS62288813A
公开(公告)日：1987-12-15
申请号：JP13218386
申请日：1986-06-06
申请人： TOYOTA MOTOR CORP
发明人： FUKUOKA YUKO , HAMAGUCHI SHIGEKI
IPC分类号： G02F1/1337
摘要： PURPOSE:To permit the application of an oriented layer to a liquid crystal cell having a curved shape and large size and to obtain the uniform oriented layer by atomizing a material for forming the oriented layer, and impressing a DC electric field between the substrate of the liquid crystal cell and the atomized particles, thereby sticking the electrified particles to the substrate. CONSTITUTION:A glass plate 10 constituting the contour of the liquid crystal cell is connected to the positive electrode of a high-voltage power source 14 and an electrification-atomization device 16 disposed to the position where the device faces the glass plate 10 is mounted with a spray gun 18 to face the glass plate. An electrode 32 at the nozzle end is connected to the negative electrode of the high-voltage power source 14. After the high-voltage power source 14 is set to about 100kV impressed potential, valves 28, 30 of a pipeline 24 are successively opened to atomize liquid polyimide by compressed air in the Venturi in the spray gun 18. The atomized polyimide particles are electrified to the negative potential by the electrode 32, are entrained in the flow of the compressed air and are injected to the glass plate 10 electrified to the positive potential, by which the particles are stuck to the glass plate 10. The formation of the oriented layer to the relatively intricate shape is possible as well.

9. 发明专利

JPS61182017A PREPARATION OF LIQUID CRYSTAL ELEMENT 失效
公开(公告)号：JPS61182017A
公开(公告)日：1986-08-14
申请号：JP2253085
申请日：1985-02-07
申请人： TOYOTA MOTOR CORP
发明人： HAMAGUCHI SHIGEKI , OTSUKA YASUHIRO , UENO HIDEAKI , FUKUOKA YUKO
IPC分类号： G02F1/13 , G09F9/35
摘要： PURPOSE:To obtain a large liquid crystal element giving an uniform and stable display by sealing the liquid crystal in the sealed space for the liquid crystal of the titled element followed by heating and then cooling the titled element from an end of said element along the direction of a parallel orientation treatment, when the liquid crystal is oriented in the direction of the parallel orientation treatment. CONSTITUTION:The titled element is prepared by fixing the substrate given the vertical orientation treatment with a carboxylic acid-chrom complex and the substrate given the parallel orientation treatment with polyimide followed by making fine grooves with a rubbing method, at a circumferences of the substrates. A nematic liquid crystal having a negate dielectric anisotropy is put into the space for sealing the liquid crystal lying between said substrates followed by sealing said liquid crystal in said space. The sealed nematic liquid crystal is heated at a temp. higher than that of a transition point between the isotropic phase of the nematic liquid crystal and the nematic phase. The heated liquid crystal element 10 is forced to cool from the end of the element by immersing it into a medium 14 lying in a thermostat 12 held the temp. to a room temp. at a rate of 5-10mm/sec along the direction A of rubbing.

10. 发明专利

JPH01156726A TWISTED NEMATIC LIQUID CRYSTAL DISPLAY ELEMENT 失效
公开(公告)号：JPH01156726A
公开(公告)日：1989-06-20
申请号：JP31651587
申请日：1987-12-15
申请人： TOYOTA MOTOR CORP
发明人： FUKUOKA YUKO , UENO HIDEAKI , ABE YOKO
IPC分类号： G02F1/137 , G02F1/139
摘要： PURPOSE:To improve a contrast ratio by setting a phase difference within a specific range and the degree of polarization of a couple of polarizing plates to >=97%. CONSTITUTION:Transparent substrates 61 and 62 of plastic, etc., are so arranged that the phase difference of a nematic liquid crystal layer 3 is 1.4-2.3 or 3.3-4.5 and layer 3 is sandwiched. Transparent conductive films 51 and 52 of ITO, NESA, etc., are formed on the internal surfaces of the substrates 61 and 62 by a PVD method or CVD method. Light distribution films 41 and 42 are arranged on the surfaces of the films 51 and 52, and the layer 3 with positive dielectric anisotropy and the peripheral edge part are sealed in a gap (d) formed between the films 41 and 42 with spacers by using seal parts 2. A couple of polarizing plates 11 and 12 whose polarization degree is >=97% are stuck on the external surfaces of the substrates 61 and 62. Consequently, extremely high light transmissivity, i.e. contrast ratio is obtained.

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