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41. 发明专利

JPH01274115A LIGHT CRYSTAL LIGHT VALVE 失效
公开(公告)号：JPH01274115A
公开(公告)日：1989-11-01
申请号：JP10482088
申请日：1988-04-27
申请人： SEIKO EPSON CORP
发明人： ARIGA SHUJI
IPC分类号： G09F9/30 , G02F1/133 , G02F1/1343 , H01B5/14
摘要： PURPOSE:To enable neutral light control by forming a common electrode on a counter substrate of 2 kinds of thin films; a thin metallic film and a transparent electrode and bringing the transparent electrode into contact with a liquid crystal layer so that the light valve can deal sufficiently with driving of TFT (thin-film transistors). CONSTITUTION:The common electrode on the counter substrate 101 is formed of two kinds of the thin films; the thin metallic film 102 and the transparent electrode 103 and the transparent electrode 103 is brought into contact with the liquid crystal layer 105. Since the thin metallic film 102 acts in an auxiliary manner to maintain sufficiently low resistance even if the transparent electrode 103 is set thin, the resistance value of the common electrode is sufficiently lowered. Further, the flawing of the thin metallic film 102 surface in a rubbing treatment at the time of a liquid crystal orientation treatment is obviated and the good oriented state is maintained by setting the transparent electrode 103 to the liquid crystal layer 105 side. The practicable use of the low-resistance common electrode which can deal sufficiently with the driving of the TFTs is thereby enabled and the neutral light control is enabled as well.

42. 发明专利

JPH01270031A LIQUID CRYSTAL DISPLAY PANEL 失效
公开(公告)号：JPH01270031A
公开(公告)日：1989-10-27
申请号：JP9945188
申请日：1988-04-22
申请人： SEIKO EPSON CORP
发明人： ARIGA SHUJI
IPC分类号： G02F1/137 , G02F1/139
摘要： PURPOSE:To improve a color reproduction range and color reproducibility by specifying the double refractive index and thickness of a twisted nematic liquid crystal compsn. held by a sealing member between a pair of substrates and impressing a specified effective voltage as a black display signal thereto. CONSTITUTION:The liquid crystal cell is constituted by sticking the transparent substrate 101 formed with active switching elements 102 controlling the electro- optical effect of the liquid crystal and the counter substrate 103 to each other by a sealing member 108. The twisted nematic liquid crystal compsn. 107 is sealed in the liquid crystal cell. The double refractive index DELTAn of the liquid crystal compsn. 107 and the thickness (d) of the liquid crystal layer are set at 1.2

43. 发明专利

JPS63212902A CUBE PRISM 失效
公开(公告)号：JPS63212902A
公开(公告)日：1988-09-05
申请号：JP23833087
申请日：1987-09-22
申请人： SEIKO EPSON CORP
发明人： KAMAKURA HIROSHI , SONEHARA TOMIO , ONO TAKESHI , NAKAMURA JUNICHI , ARIGA SHUJI , YAJIMA FUMITAKA
IPC分类号： G02B5/04
摘要： PURPOSE:To execute color separation and color synthesis of transmitted light of a prism effectively by constructing a cube prism by allowing each vertex of four rectangular prisms having thin film layers for selectively reflecting color light on two edges forming a right angle therebetween to contact coincidently. CONSTITUTION:Thin film layers for selectively reflecting red(R) and blue(B) color light from each dichroic mirror are formed on two edges of a rectangular prism 20 forming a right angle therebetween, by vapor deposition. The four rectangular prisms 20 are allowed to contact so as the vertex of each right angle coincide to each other and allowing one of the two edges forming a right angle of the rectangular prism 20 to contact, thus forming a cube prism 30. White light 31 is made incident to a surface of the cube prism 30 at right angles, and separated into three primary colors R, B, and G by the respective selective reflection film. Since the cube prism is constituted of four rectangular prisms, transmitted light through the prism is converted completely to color synthesized light or color separated light.

44. 发明专利

JPS62299940A LIQUID CRYSTAL LIGHT VALVE 失效
公开(公告)号：JPS62299940A
公开(公告)日：1987-12-26
申请号：JP14453086
申请日：1986-06-20
申请人： SEIKO EPSON CORP
发明人： ARIGA SHUJI
IPC分类号： G02F1/133 , G02F1/1335 , G02F1/137 , G02F1/139
摘要： PURPOSE:To attain uniform light control over the whole visual wavelength area by optimizing the double refraction anisotropy of TN liquid crystal and the arrangement of a polarizing plate under specific conditions. CONSTITUTION:The double refraction anisotropy DELTAn of the TN liquid crystal and the thickness (d) between a pair of substrates 101, 103 are set up so as to form 0.9

45. 发明专利

JPS62295024A PROJECTION TYPE DISPLAY DEVICE 失效
公开(公告)号：JPS62295024A
公开(公告)日：1987-12-22
申请号：JP13960586
申请日：1986-06-16
申请人： SEIKO EPSON CORP
发明人： ARIGA SHUJI
IPC分类号： G02B27/28 , G02F1/1335 , G09F9/00 , H04N9/31
摘要： PURPOSE:To reduce optical loss at the time of optically modulating a TN liquid crystal light valve as low as possible, to improve light using efficiency and to obtain a projection image with high luminance by using a dichroic prism having selective polarized light separating characteristics in addition to color selective reflection characteristics for color separation and color synthesis. CONSTITUTION:The titled device is constituted of an illuminating system, a dichroic mirror system for separating white light into color beams, a TN liquid crystal light valve 207 for forming an image by using plural color beams, a dichroic mirror system for synthesizing the color beams, and a projecting optical system. The dichroic mirror systems for color synthesis and color separation are dichroic prisms 202, 208 having polarized light separating characteristics selectively reflecting incident polarized light having a polarizing axis almost vertical to an incident plane on the dichroic mirror surface. Since the dichroic prisms 202, 208 are used for color separation and color synthesis, a highly reliable display device having high luminance can be obtained.

46. 发明专利

JPS62199195A PROJECTION TYPE STEREOSCOPIC TELEVISION RECEIVER 失效
公开(公告)号：JPS62199195A
公开(公告)日：1987-09-02
申请号：JP4232486
申请日：1986-02-27
申请人： SEIKO EPSON CORP
发明人： ONO TAKESHI , SONEHARA TOMIO , NAKAMURA JUNICHI , ARIGA SHUJI , YAJIMA FUMITAKA , KAMAKURA HIROSHI
IPC分类号： H04N13/04 , G02B27/22 , G02B30/25 , G02F1/13 , G02F1/133 , G02F1/1335 , G03B35/26
摘要： PURPOSE:To display a color picture, to attain a compact size and a light weight and to exhibit a large screen by using two sheets of liquid crystal panels on which color filter layers are formed, and displaying a picture for the left eye on one of the panels and a picture for the right eye on the other panel. CONSTITUTION:The liquid crystal panels 9, 10 for the right eye and the left eye on which the color filter layers are formed so as to intersect orthogonally polarizing axes of light transmitting the two sheets of the liquid crystal panels. Chrominance signals are reproduced respectively from a video signal 46 for the left eye and a video signal 47 for the right eye in a signal processing circuit 48, converted into a signal suitable for driving the liquid crystal panel in a signal converting circuit 49 and inputted to an X driver circuit 53. Then, the output of the circuit 53 is connected to the source line of the panels 9 and 10 to generate a voltage corresponding to picture data, and a Y driver circuit 54 is connected to a gate line to select and drive the gate line for display. Thereby, polarizing glasses are used to observe not only a black and white picture but also the color picture and the large screen can be exhibited with the compact and light device.

47. 发明专利

JPS62194226A PROJECTION TYPE DISPLAY DEVICE 失效
公开(公告)号：JPS62194226A
公开(公告)日：1987-08-26
申请号：JP3573286
申请日：1986-02-20
申请人： SEIKO EPSON CORP
发明人： ARIGA SHUJI , KAMAKURA HIROSHI , ONO TAKESHI , NAKAMURA JUNICHI , YAJIMA FUMITAKA , SONEHARA TOMIO
IPC分类号： H04N5/74 , G02F1/133 , G02F1/1335 , G02F1/137
摘要： PURPOSE:To realize a liquid crystal light valve which can made gradation display having no hues and black and white display and to obtain a projection displays device using the liquid crystals light valve common to R, G and B by incorporating a dichromatic dye into a twisted nematic liquid crystal. CONSTITUTION:Black and white switching having no hue is made possible by making the dischromatic dye compatible with the twisted nematic liquid crystal. Incident light from a halogen lamp 1 is collimated by a lens 2 and the collimated light is separated to R, G and B components by a dichroic prism 3. The separated components are made incident on the twisted nematic light valves 6-8 for R, G and B via a mirror 4 and are again made incident on the dichroic prism 5 from which the synthesized light is emitted. The light is macro-projected on a screen 10 by a projection lens 9 and a color image is obtd. The resulted projection image has the excellent color purity and gradation display. Since the light valves for R, G and B have the same optical characteristics, the easy color reproduction is made possible without correcting the impressed voltages for each of R, G and B.

48. 发明专利

JPS62180326A LIQUID CRYSTAL VIDEO DISPLAY 失效
公开(公告)号：JPS62180326A
公开(公告)日：1987-08-07
申请号：JP2224586
申请日：1986-02-04
申请人： SEIKO EPSON CORP
发明人： YAZAWA SATORU , USHIKI TAKEYOSHI , ARIGA SHUJI
IPC分类号： G02F1/133 , G02F1/1335 , G02F1/136 , G02F1/1365 , G02F1/137 , G02F1/139
摘要： PURPOSE:To improve the contrast of a liquid crystal panel, and to improve the contrast of a liquid crystal panel, by constituting the titled display so that a liquid crystal molecule becomes roughly a vertical orientation or a hybrid orientation against a substrate, when no voltage is applied, and the liquid crystal goes to roughly horizontal against the substrate and a 90 deg. twist structure, at the time of application of a voltage. CONSTITUTION:Upper and lower polarizing plates 11, 12 are installed so as to cross vertically polarizing axes 56, 57. Oriented films on glass substrates 13, 14 are formed by superposing vertical oriented films 16, 17 on horizontal oriented films 15, 18 (an oblique vapor-deposited film of an inorganic matter or an organic film for rubbing). Also, oriented films on the glass substrates 13, 14 have a structure which has super posed horizontal oriented films 15, 18 on vertical oriented films 16, 17. In such cases, a liquid crystal 19 whose dielectric anisotropy iis negative forms a vertical orientation, at the time of no voltage is applied, and becomes a horizontal twist arrangement, at the time of a voltage is applied. Also, in case one of the glass plates is the horizon tal oriented film 15 and the other substrate is a laminated structure of the horizontal oriented film 17 and the vertical oriented film 18, it is also allowed that the horizontal oriented film 17 and the vertical oriented film 18 are laminated in reverse in its upper and lower parts.

49. 发明专利

JPS62159134A REFLECTION TYPE SCREEN 失效
公开(公告)号：JPS62159134A
公开(公告)日：1987-07-15
申请号：JP99086
申请日：1986-01-07
申请人： SEIKO EPSON CORP
发明人： YAJIMA FUMITAKA , KAMAKURA HIROSHI , ONO TAKESHI , NAKAMURA JUNICHI , SONEHARA TOMIO , ARIGA SHUJI
IPC分类号： G03B21/60
摘要： PURPOSE:To obtain a lightweight, compact screen which is stored and carried conveniently by making the screen foldable and curved in a spherical surface toward a metallic foil side when the screen is used. CONSTITUTION:A backing material 1 is provided with a diffuse reflecting layer 2 and fitted to a skeleton 3 to constitute the screen. The skeleton 3 is provided with at least one joint part 5 and made foldable, and a joint part 5 is provided to one end of the skeleton 3, which is coupled with a pole 4. The joint parts 5 are fixed while the screen is spread and folded, and allowed to move freely in other states. The skeleton 3 is arcuate while the joint parts 5 are spread, and consequently the screen becomes curved to an observer side to minimize the influence of external light.

50. 发明专利

JPS62159120A LIQUID CRYSTAL LIGHT VALVE 失效
公开(公告)号：JPS62159120A
公开(公告)日：1987-07-15
申请号：JP98986
申请日：1986-01-07
申请人： SEIKO EPSON CORP
发明人： KAMAKURA HIROSHI , ONO TAKESHI , SONEHARA TOMIO , NAKAMURA JUNICHI , ARIGA SHUJI , YAJIMA FUMITAKA
IPC分类号： G02F1/13 , G02F1/133 , G02F1/1333 , G02F1/1335 , G02F1/13357 , G09F9/00
摘要： PURPOSE:To obtain a liquid crystal light valve which has superior contract and secure sufficient brightness on a screen by bringing a cooling panel which has cooling liquid charged between two transparent substrates into contact with a liquid crystal panel. CONSTITUTION:A package substrate 60 is a circuit board, the lower substrate 61 of the liquid crystal panel is guided in a recessed part cut to the same thickness of the lower substrate 61, and the liquid crystal panel is composed of a polarizing plate 63 of almost the same size with the upper substrate 62. The polarizing plate is brought into contact with the lower substrate 65 of the cooling panel by a connector 64 so that the cooling panel contacts the liquid crystal panel. The upper substrate 66 of the cooling panel is surface where light source light is incident, so the surface is provided with a nonreflective coating to increase incidence efficiency. Guest-host type liquid crystal is charged as the cooling liquid of the cooling panel and electricity is applied to an upper and a lower solid electrode to form a liquid crystal having electrooptic effect and also realize the liquid crystal light valve which has an incident light dimming function and a cooling function.

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