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101. 发明专利

JPH10153769A LIQUID CRYSTAL DISPLAY ELEMENT, AND ITS MANUFACTURE, AND LIQUID CRYSTAL DISPLAY DEVICE USING THE SAME 失效
公开(公告)号：JPH10153769A
公开(公告)日：1998-06-09
申请号：JP31175796
申请日：1996-11-22
申请人： HITACHI LTD
发明人： FUNAHATA KAZUYUKI , YOKOKURA HISAO , KONDO KATSUMI
IPC分类号： G02F1/133 , G02F1/1333 , G02F1/1335 , G02F1/1339
摘要： PROBLEM TO BE SOLVED: To provide a liquid crystal display element with which a uniform liquid crystal thickness as well as a high quality picture are obtained and a manufacturing method for the same. SOLUTION: The liquid crystal display element is manufactured by including a process for forming one electrode substrate by laminating and hardening an orientation-controlled film 12 constituting of a resin thin film on a substrate 10 equipped with transparent electrodes 11, a process for executing an orientation treatment such as rubbing on the orientation-controlled film 12, a process for forming a flattening and simultaneously spacer material-fixing film 13 in gaps between transparent electrodes so as to eliminate the difference of the surface level occurring in the transparent electrodes 11 and in the gaps between transparent electrodes, a process for displacing/fixing spacer materials 14 to the flattening and simultaneously spacer material-fixing film, a process for removing the spacers not fixed to the flattening and simultaneously spacer material-fixing film and a process for superposing the one electrode substrate, from which the spacer materials are removed, on the other electrode substrates (22, 21, 20) via the fixed and remained spacer materials 14.

102. 发明专利

JPH0480722A ACTIVE MATRIX LIQUID CRYSTAL DISPLAY DEVICE 失效
公开(公告)号：JPH0480722A
公开(公告)日：1992-03-13
申请号：JP19300990
申请日：1990-07-23
申请人： HITACHI LTD , HITACHI HARAMACHI SEMI CONDUCT
发明人： WAKUI TAKAYUKI , SAITO RYUICHI , TSUMURA MAKOTO , NEMOTO FUMIAKI , MATSUI MAKOTO , NAGAE KEIJI , FUNAHATA KAZUYUKI , MIKAMI YOSHIAKI , KITAJIMA MASAAKI
IPC分类号： G02F1/136 , G02F1/1368 , G09F9/30 , H01L21/336 , H01L27/12 , H01L29/78 , H01L29/786
摘要： PURPOSE:To reduce the picture element area and to improve the opening ratio by setting channel width which is the longitudinal direction of a thin film transistor between two adjacent signal electrode lines so as to be in a direction intersecting orthogonally the signal electrode lines. CONSTITUTION:This film transistors 411 - 415 are arranged nearly in the center between two adjacent video signal lines 401, where there are many picture elements, laterally (the channel width direction of the thin film transistors is perpendicular to video signals). The channel width W of the thin film transistors are set normally larger than the channel length L. Consequently, effective utilization between two adjacent video signal lines is available. Further, a transparent electrode 420 has an effective area part arranged in a nearly square shape between two adjacent video signal lines 401. The machining of the transparent pixel electrode 420 which is effective numerical for opening ratio is facilitated. Consequently, the picture element area is reduced and the opening ratio is improved.

103. 发明专利

JPH0480721A ACTIVE MATRIX LIQUID CRYSTAL DISPLAY DEVICE 失效
公开(公告)号：JPH0480721A
公开(公告)日：1992-03-13
申请号：JP19300890
申请日：1990-07-23
申请人： HITACHI LTD , HITACHI HARAMACHI SEMI CONDUCT
发明人： WAKUI TAKAYUKI , SAITO RYUICHI , TSUMURA MAKOTO , NEMOTO FUMIAKI , MATSUI MAKOTO , NAGAE KEIJI , FUNAHATA KAZUYUKI , MIKAMI YOSHIAKI , KITAJIMA MASAAKI
IPC分类号： G02F1/1335 , G02F1/136 , G02F1/1368
摘要： PURPOSE:To prevent a DC voltage, to prevent deterioration and to improve the reliability by providing a conductive layer on a signal electrode line via an insulating film. CONSTITUTION:A DC voltage developed between a video signal line 104 applied with a voltage and an opposite common transparent pixel electrode 453 is connected to a common transparent pixel electrode 453 which has a conductive layer 480 formed on an upper transparent glass electrode substrate 403 via silver paste 430 and is applied with a common electrode, so the video signal line 401 and common transparent pixel electrode 453 are held at the same potential, so that the voltage is canceled. The conductor layer is provided on an electric conductor applied with the voltages of the video signal line 401 and common transparent picture element electrode 453 and connected to the common transparent pixel electrode to nearly eliminate the potential difference; and then the DC voltage developed between them can be canceled, the deterioration is prevented, and the reliability is improved.

104. 发明专利

JPH03219210A LIQUID CRYSTAL DISPLAY DEVICE 失效
公开(公告)号：JPH03219210A
公开(公告)日：1991-09-26
申请号：JP1361790
申请日：1990-01-25
申请人： HITACHI LTD
发明人： MORI YUJI , FUNAHATA KAZUYUKI , NAGAE KEIJI , HASHIMOTO TADAHIKO
IPC分类号： G02F1/13 , G02F1/133 , G09G3/36
摘要： PURPOSE:To allow the displaying of moving images by irradiating a liquid crystal element with a laser beam to write the images and successively rewriting only the moving parts. CONSTITUTION:The part indicating flow on the display screen of the thermal writing type liquid crystal display device to which a thermoelectrooptical effect is applied is displayed by using an intermittent line kind, such as broken line, and only the part of the flow is successively rewritten. Namely, the flow is expressed by moving the disconnected part at every rewriting. This rewriting is necessitated to be executed only with the part of the route where the movement is ought to be displayed. The repeating of the rewriting is thus executed in a short period of time. The easy visual displaying of the conduct of the flow is executed in this way.

105. 发明专利

JPH01283585A PROJECTION TYPE DISPLAY 失效
公开(公告)号：JPH01283585A
公开(公告)日：1989-11-15
申请号：JP11244988
申请日：1988-05-11
申请人： HITACHI LTD
发明人： MORI YUJI , KOSAKA MASAHIRO , FUNAHATA KAZUYUKI , HOSHINO MINORU , NAGAE KEIJI
IPC分类号： G09F9/00 , H04N5/74 , H04N9/31
摘要： PURPOSE:To reduce the size and weight of the projection type display by separating a multicolor image to images of red, green, and blue which are the primary colors of light, and connecting in common scanning signal lines of three pictures on an optical switch elements for displaying the images of the primary colors. CONSTITUTION:Light emitted by a light source 1 becomes three pieces 20a, 20b, and 20c of luminous flux of the three primary colors through a condenser lens 2 and a dichroic mirrors 3, 4, and 5 to illuminate a polarizing plate 12, a liquid crystal element 6 which becomes the optical switch element, and a polarizing plate 13. The pieces of luminous flux of the respective colors passed through the liquid crystal element 6 are made incident on optical waveguide glass members 7 and 8, put together by a dichroic prism 9, and projected on a screen 11 by a projection lens 10 to display a full-color image. The liquid crystal element 30 has three display parts 31, 32, and 33 corresponding to the primary colors, and scanning signals supplied to the respective display parts are supplied at a time through common scanning lines 34. Consequently, intervals of respective pictures are made small and the device is reduced in size and weight.

106. 发明专利

JPH01200326A MULTICOLOR LIQUID CRYSTAL PROJECTION TYPE DISPLAY DEVICE 失效
公开(公告)号：JPH01200326A
公开(公告)日：1989-08-11
申请号：JP2369788
申请日：1988-02-05
申请人： HITACHI LTD
发明人： FUNAHATA KAZUYUKI , MORI YUJI , HASHIMOTO TADAHIKO , NAGAE KEIJI
IPC分类号： G02F1/13
摘要： PURPOSE:To prevent an image from shifting in position and color by nearly equalizing the coefficients of heat expansion of a mount for a galvanomirror and a laser light reflecting plate which is fixed on the mount. CONSTITUTION:The mount 31 for the galvanomirror 30 and the laser light reflecting plate 32 are nearly equalized in coefficient of heat expansion. If the laser light reflecting plate 32 fixed to the galvanomirror mount 31 which determines the position of a laser beam is strained thermally, an image formed on a liquid crystal element becomes different in position. For the purpose, the galvanomirror mount 31 and the reflecting plate 32 fixed thereto are equalized in coefficient of heat expansion to enable the galvanomirror mount 31 and reflecting plate 32 to expand and contract equally even if the ambient temperature varies. Consequently, the image is prevented from shifting in position and color.

107. 发明专利

JPH01120538A LIQUID CRYSTAL DISPLAY ELEMENT 失效
公开(公告)号：JPH01120538A
公开(公告)日：1989-05-12
申请号：JP27745187
申请日：1987-11-04
申请人： HITACHI LTD
发明人： HIRAKATA JUNICHI , FUNAHATA KAZUYUKI , NAGAE KEIJI , KIKUCHI NAOKI , SHINDO YASUHIKO
IPC分类号： G02F1/1347 , G02F1/133
摘要： PURPOSE:To form a background color and the color of a display part as nonchromatic colors so that black and white display is enabled by forming a liquid crystal element into a two-layered structure and optimizing the product of the anisotropy of the refractive indices of liquid crystals and the thicknesses of respective liquid crystal layers. CONSTITUTION:The upper limit of the twist angle 15 of liquid crystal molecules is set at 270 deg. and the lower limit at 180 deg.. The same liquid crystals are used for a 1st layer 3 and the 2nd layer 2 and the thicknesses of the liquid crystal layers are equaled or the products of the anisotropy of the refractive indices of the liquid crystals of the respective layers and the thicknesses of the liquid crystal layers are equaled; further, the sizes of the twist angles 15 and 24 of the respective layers are equaled to reverse the directions of the twists. The liquid crystal layers are so superposed on each other that the visual angle directions 16 and 25 intersect orthogonally with each other so that the axes of absorption (or axes of polarization) 6 of polarizing plates are perpendicular or parallel to or with each other. The color of the display is black in the state of impressing no driving voltage to the cell when the axes of absorptions are perpendicular to each other and the color of the display is white when said axes are parallel with each other.

108. 发明专利

JPH01105217A NEMATIC LIQUID CRYSTAL DISPLAY DEVICE WITH TWISTED SPIRAL STRUCTURE 失效
公开(公告)号：JPH01105217A
公开(公告)日：1989-04-21
申请号：JP18185688
申请日：1988-07-22
申请人： HITACHI LTD
发明人： FUNAHATA KAZUYUKI , MORI YUJI , HIRAKATA JUNICHI , NAGAE KEIJI , KAWAKAMI HIDEAKI , KINUGAWA KIYOSHIGE , SHINDO YASUHIKO
IPC分类号： G02F1/1335 , G02F1/133
摘要： PURPOSE:To allow staining of a background and a display part to be similar to an achromatic color and to execute not only a black and white display but also a color display by bringing a transmission light colored by a double refraction property determined by a constituting condition of a liquid crystal element, to phase correction by using a phase plate. CONSTITUTION:As for a liquid crystal display element which is called a supertwisted nematic type, one of a background or a display part is colored, therefore, the phase correction is executed by using a phase plate having a double refraction property. Therefore, between the liquid crystal display element and the upper side polarizing plate 24, the phase plate for setting a background color and a display color to an achromatic color is placed, and as for the phase plate, an element which has enclosed a liquid crystal 33 whose torsion angle alphais '0' deg. degree, what is called a parallel orientation is used. In such a way, the background and the display part can be brought close to the achromatic color, and not only a black and white display but also a color display can be executed.

109. 发明专利

JPS6468090A MULTICOLOR PROJECTION TYPE LIQUID CRYSTAL DISPLAY 失效
公开(公告)号：JPS6468090A
公开(公告)日：1989-03-14
申请号：JP22407387
申请日：1987-09-09
申请人： HITACHI LTD
发明人： FUNAHATA KAZUYUKI , NAGAE KEIJI , MORI YUJI , HASHIMOTO TADAHIKO
IPC分类号： H04N9/31
摘要： PURPOSE:To attain miniaturization, high luminance and high contrast by being composed of a single light source, two dichroic mirrors, projecting system composed of three reflection type liquid crystal elements and projecting lens, and a writing system having a semiconductor laser as a main part. CONSTITUTION:White projected light irradiated from a xenon arc lamp is narrowed down by a lens system 13 and reflected to a dichroic mirror 121 side by a mirror 141 provided on a central part in a projecting lens 16 by an off-axis optical system. Out of the reflected white light, only a blue light component is reflected by the dichroic mirror 121, reflected by a mirror 142 and made incident on a liquid crystal element 151. Out of red and green light components to permeate through the dichroic mirror 121, only the green light component is reflected by a dichroic mirror 122, reflected by a mirror 143 and made incident on a liquid crystal element 152. The red one permeates through the dichroic mirrors 121 and 122 and is made incident on a liquid element 153. Thus, the miniaturization, the high luminance and the high contrast can be attained.

110. 发明专利

JPS63284595A GRAPHIC REWRITING 失效
公开(公告)号：JPS63284595A
公开(公告)日：1988-11-21
申请号：JP11905887
申请日：1987-05-18
申请人： HITACHI LTD , HITACHI PROCESS COMPUTER ENG
发明人： HASHIMOTO TADAHIKO , IGARI KUNIYUKI , SHIMOYAMA KAZUHIKO , FUNAKOSHI SHUJI , KATSUYAMA ICHIRO , FUNAHATA KAZUYUKI
IPC分类号： G09G3/18 , G02F1/13

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