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公开(公告)号：JPH0720429A
公开(公告)日：1995-01-24
申请号：JP18736793
申请日：1993-06-30
Applicant: SONY CORP
Inventor： YOU EIHO , YASUDA AKIO , NITO KEIICHI , TAKANASHI HIDEHIKO , MATSUI ERIKO , HIDE SHICHIYOU , KATAOKA NOBUE
IPC: G02F1/13 , G02F1/1335 , G02F1/1347 , G09G3/36 , H04N5/335 , H04N5/349 , H04N5/357 , H04N5/372 , H04N5/66
Abstract: PURPOSE:To enable wobbling without spoiling the performance and to obtain high resolution by converging incident light on a position on the light incidence side of a wobbling element, corresponding to a pixel of an optical element, to specific size. CONSTITUTION:A microlens 76 is arranged opposite having an optical axis common to a microlens 74 on a display side and constitutes a light converging element 77 for projection light from the display 2. In this case, incident light 6 from each pixel of the display 2 can securely be converged on the microlens 76 through the microlens 74 and made incident on the liquid crystal element 3 of the wobbling elements 7 as parallel light to the same width and the same size with a transparent electrode 13. Therefore. the width or size of the luminous flux of the incident light becomes equal to the width or size of a black stripe part 75. Consequently, polarized light 6 projected from the display 2 is made incident on a liquid crystal element 3 to the same width and the same pitch and shifted in phase by this liquid crystal element 3 to change the direction of the polarized light.
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公开(公告)号：JPH0667132A
公开(公告)日：1994-03-11
申请号：JP35591491
申请日：1991-12-21
Applicant: SONY CORP
Inventor： MATSUI ERIKO , ENOMOTO MASAHISA , YASUDA AKIO , NITO KEIICHI , TAKANASHI HIDEHIKO , MIYASHITA MAYUMI , KATAOKA NOBUE
IPC: G02F1/13
Abstract: PURPOSE:To uniformly form the gap between the glass substrates of a liquid crystal display element at a prescribed value with good accuracy by specifying the surface roughness of the pressurizing surface of the jig for pressure adhering to a specific value or below. CONSTITUTION:The jig 10 for pressure adhering is constituted of a lower metallic plate 1a, an upper metallic plate 1b parallel therewith and guide rods 2a, 2b erecting perpendicularly on the lower metallic plate 1a. Holes are so bored in the upper metallic plate 1b that the guide rods 2a, 2b are fitted therein. The surface roughness of the opposite surfaces of the lower metallic plate 1a and the upper metallic plate 1b is specified to 0.4S pr smaller surface roughness specified by the requirements specified in JIS(Japanese Industrial Standards) B0601, i.e., 0.4mum or smaller in order to control the gap between the glass substrates to 1.4mum+ or -0.1mum at the time of assembling the liquid crystal element for which, for example, a ferroelectric liquid crystal is used. Such metallic plates 1a, 1b are produced preferably of a material having a high hardness; for example, plates of alloy tool steel SKS-3 provided with titanium layers of 4mum thickness on the surfaces to be formed as pressurizing surfaces thereof are usable.
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公开(公告)号：JPH05173152A
公开(公告)日：1993-07-13
申请号：JP35591391
申请日：1991-12-21
Applicant: SONY CORP
Inventor： YASUDA AKIO , NITO KEIICHI , MATSUI ERIKO , TAKANASHI HIDEHIKO , MIYASHITA MAYUMI , KATAOKA NOBUE
IPC: G02F1/13 , G02F1/1341
Abstract: PURPOSE:To inject liquid crystal in a short time and stabilize the initial orientation of liquid crystal, to easily position a liquid crystal reservoir and a liquid crystal cell without contacting, and to decrease the amount of liquid crystal used at the time of the liquid crystal injection and improve the yield of the liquid crystal injection into the liquid crystal cell. CONSTITUTION:The liquid crystal cell 2 which has a space where the liquid crystal is charged between a couple of transparent substrates 6a and 6b is provided with 22 liquid crystal injection holes 5 or the width of a liquid crystal injection hole is increased. The liquid crystal injection hole 5 is positioned so that the liquid crystal can be injected crossing the direction of the liquid crystal orienting films of the glass substrates 6a and 6b. The peripheral wall of the space of the liquid crystal reservoir where the liquid crystal cell 2 is put is tapered downward. Further, the space of the liquid crystal reservoir where the liquid crystal is reserved is slanted. The liquid crystal begins to be degassed once entering an isotropic state when the liquid crystal is injected.
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公开(公告)号：JPH05173149A
公开(公告)日：1993-07-13
申请号：JP35628491
申请日：1991-12-24
Applicant: SONY CORP
Inventor： MATSUI ERIKO , YASUDA AKIO , NITO KEIICHI , TAKANASHI HIDEHIKO , MIYASHITA MAYUMI , KATAOKA NOBUE
IPC: G02F1/1339
Abstract: PURPOSE:To precisely and uniformly form the cell gap of the liquid crystal display element to a specific value by using a seal agent which has specific viscosity for the liquid crystal display element. CONSTITUTION:The peripheral part (external frame) of one glass substrate 1 of the liquid crystal display element which has a couple of glass substrates is coated with the seal agent for the liquid crystal display element by printing, thereby forming a seal agent layer 2. In this case, the viscosity of the seal agent is 100-300 poise, so when this agent is used to assemble the liquid crystal display element, the seal agent can reasonably be applied over the glass substrate 1 to uniform thickness. At this time, the coating width of the seal agent for the liquid crystal display element is set to 0.2-0.8mm and then the adhesive strength and no position shift between the glass substrates 1 are further provided. Consequently, the cell gap of the liquid crystal display element can uniformly and precisely be controlled.
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公开(公告)号：JPH1090697A
公开(公告)日：1998-04-10
申请号：JP26561896
申请日：1996-09-13
Applicant: SONY CORP
Inventor： FUJIOKA TAKAYUKI , KATAOKA NOBUE , NITO KEIICHI , YASUDA AKIO
IPC: G02F1/1341 , G02F1/133 , G09F9/35
Abstract: PROBLEM TO BE SOLVED: To improve injection property and dispensability of a liquid crystal and to uniformly obtain a voltage-transmittance curve with high linearity all over the plane by injecting a liquid crystal between a pair of substrates, cooling the liquid crystal to the temp. to show a chiral smectic C phase and then increasing the temp. to show a chiral nematic phase. SOLUTION: A liquid crystal is injected between a pair of substrates at the temp. at which the liquid crystal shows N* (chiral nematic phase) (an arrow I), cooled to the temp. at which the liquid crystal shows SmC* (chiral smectic C phase) (an arrow II) after injection, and then further heated to the temp. at which the liquid crystal shows N* (chiral nematic phase) (an arrow III). Therefore, by injecting the liquid crystal while viscosity of the liquid crystal is maintained to a certain degree, dispersibility of a component such as fine particles in the liquid crystal is increased. By heating the liquid crystal to N* after cooling to SmC*, reorientation of the liquid crystal can be effectively performed and uniform orientation can be obtd. for the whole plane. Thus, characteristics with good linearity and easy controlling of gradation can be obtd.
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Patent Agency Ranking
公开(公告)号：JPH08201758A
公开(公告)日：1996-08-09
申请号：JP2603595
申请日：1995-01-20
Applicant: SONY CORP
Inventor： NITO KEIICHI , YASUDA AKIO , MATSUI ERIKO , TAKANASHI HIDEHIKO , YOU AKIYASU , KATAOKA NOBUE
Abstract: PURPOSE: To make it possible to attain higher resolution with good efficiency, to improve mosaic-like dotty plotting screens, etc., to seamless continuous screens and to suppress the damage of liquid crystals at the time of driving by enabling high-speed wobbling easily dealable with video rates for a display consisting of discrete pixels or a solid state image pickup element, etc., consisting of discrete photodetecting pixels. CONSTITUTION: Plural pieces of elements 7-1, 7-2 consisting of phase modulation optical element 3 which are oppositely arranged with plural pieces of optically transparent substrates 20, 21 provided with optically transparent electrodes 13, 14 and oriented films 22, 23 in this order apart a prescribed spacing from each other on the side of these electrodes 13, 14 and the oriented films 22, 23 and are injected with at least one kind of the liquid crystals 15 selected from ferroelectric liquid crystals, antiferroelectric liquid crystals and smectic liquid crystals exhibiting an electrical gradient effect within the spacing and optically transparent double refractive media 4 are laminated and are so constituted that a switching state (memory state) is maintained by impression of a low voltage in succession to the top pulses at the time of driving.
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公开(公告)号：JPH0736054A
公开(公告)日：1995-02-07
申请号：JP20175193
申请日：1993-07-22
Applicant: SONY CORP
Inventor： NITO KEIICHI , YASUDA AKIO , HIDE FUMITOMO , YOU EIHO , TAKANASHI HIDEHIKO , MATSUI ERIKO , KATAOKA NOBUE
Abstract: PURPOSE:To make it possible to efficiently attain a higher resolution and to improve mosaic-like dot plotting screen, etc., to a seamless continuous screen by making possible easy wobbling (shifting of picture elements) easy dealing with a video rate at a high speed for a display consisting of discrete pixels and a solid-state image pickup element consisting of discrete photodetecting pixels, etc. CONSTITUTION:This optical device is constituted by laminating plural pieces of elements 7-1, 7-2 each consisting of a phase modulation optical element 3 which is arranged with plural pieces of optical transparent substrates provided with optically transparent electrodes and oriented films in this order so as to face each other apart prescribed spacings on the sides of the electrodes and the oriented films and is injected with at least one kind of the liquid crystals selected from ferroelectric liquid crystals, antiferroelectric liquid crystal and smectic liquid crystals exhibiting an electric grading effect into the spacings and an optically transparent double refractive medium 4.
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公开(公告)号：JPH0730822A
公开(公告)日：1995-01-31
申请号：JP19425293
申请日：1993-07-09
Applicant: SONY CORP
Inventor： TAKANASHI HIDEHIKO , MATSUI ERIKO , YOU EIHO , HIDE SHICHIYOU , KATAOKA NOBUE , NITO KEIICHI , YASUDA AKIO
Abstract: PURPOSE:To obtain an optical device consisting of a liquid crystal element obtaining a sharp picture in which wobbling (picture element deviation) is executed surely and excellently by adopting a ferroelectric liquid crystal or the like whose response speed is faster than a response speed of an optical element as a liquid crystal of a liquid crystal element used for wobbling. CONSTITUTION:A ferroelectric liquid crystal device whose response speed t1 is faster than a response speed t2 of an optical element (a TFT view finder in this embodiment) is adopted as a liquid crystal of a liquid crystal element used for wobbling. The time in which the transmission rate between the liquid crystal element and the optical element reaches 50% of a desired value is made coincident, the ferroelectric liquid crystal in the liquid crystal element reaches quickly a desired cone angle, a picture element of the optical element is surely shifted to an object position, a picture of one field is completely deviated and a sharp picture is obtained. In order to make the effect more remarkable, it is desired that the response speed t1 of the ferroelectric liquid crystal display device is set to 50% or below the response speed of the optical element subject to wobbling.
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公开(公告)号：JPH0728042A
公开(公告)日：1995-01-31
申请号：JP19425393
申请日：1993-07-09
Applicant: SONY CORP
Inventor： TAKANASHI HIDEHIKO , MATSUI ERIKO , YOU EIHO , HIDE SHICHIYOU , KATAOKA NOBUE , NITO KEIICHI , YASUDA AKIO
IPC: G02F1/1333 , H04N5/66
Abstract: PURPOSE:To effectively utilize the characteristics of a ferroelectric liquid crystal which is extremely high in response speed and can be driven at a video rate, to well maintain the orientability of liquid crystal molecules, to improve a switching state by an effect of an electric field and, therefore, to realize a good wobbling effect (to enhance the resolution of a display element, image pickup element, etc., or to improve display performance, image pickup performance, etc.). CONSTITUTION:Ferroelectric liquid crystals, etc., are used as the liquid crystals 15 of a liquid crystal element 3 to be used for wobbling and specific oriented films consisting of polyimide films or diagonally vapor deposited silicon oxide films are formed as the liquid crystal oriented films. The liquid crystal element 3 for wobbling, of which the contrast is held at >=+ or -50%, the cone angle within + or -20 deg., the change rate of the double refractive quantity within + or -50%, the change rate of the pretilt angle within + or -50% or the change rate of the inclination angle of layer within + or -50% as compared with before impartation of the impact of >=10G acceleration or random waves or sin wave vibrations which can be generated generally at the time of transportation or use, etc., in the case of such impartation is obtd.
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20.发明专利
公开(公告)号：JPH0720474A
公开(公告)日：1995-01-24
申请号：JP19194093
申请日：1993-07-05
Applicant: SONY CORP
Inventor： HIDE SHICHIYOU , NITO KEIICHI , YASUDA AKIO , MATSUI ERIKO , TAKANASHI HIDEHIKO , KATAOKA NOBUE , YOU EIHO
Abstract: PURPOSE:To improve phase control characteristics and more particularly the resolution of a display element, etc., to be wobbled by forming the liquid crystal oriented films to be formed on electrodes of the phase control element of polyimide. CONSTITUTION:The surfaces of transparent glass substrates 20, 21 are provided with transparent electrodes 13, 14 and are further formed with polyimide films 22, 23 as the liquid crystal oriented films thereon. These polyimide oriented films 22, 23 are subjected to prescribed rubbing treatments. The substrates 20, 21 with such oriented films are so assembled that the orientation treatment directions thereof are, for example, counterparalleled with each other on the opposite face. Glass beads 24 meeting the desired gap length are used as the spacers. The spacers are dispersed into a sealing material 25 for adhering the circumference in the case of the area smaller than the size of the transparent substrates, by which the gap between the substrates is controlled.
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