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51. 发明专利

JPH09105908A ACTIVE MATRIX TYPE LIQUID CRYSTAL DISPLAY DEVICE 失效
公开(公告)号：JPH09105908A
公开(公告)日：1997-04-22
申请号：JP26123595
申请日：1995-10-09
申请人： HITACHI LTD
发明人： ASHIZAWA KEIICHIRO , OTA MASUYUKI , OGAWA KAZUHIRO , YANAGAWA KAZUHIKO , YANAI MASAHIRO , KONDO KATSUMI , OE MASATO , KONISHI NOBUTAKE
IPC分类号： G02F1/1337 , G02F1/133 , G02F1/1343 , H01L21/336 , H01L29/786
摘要： PROBLEM TO BE SOLVED: To provide an active matrix type liquid crystal display device with which a visual field angle comparable to that of a cathode ray tube is realized since the range of the visual field angle in which gradations are uniform is broad and in which a horizontal electric field system capable of improving picture quality is adopted, SOLUTION: In an active matrix type liquid crystal display device having one pair of substrates, liquid crystal layer to be held in between the one pair of substates. active elements formed on the substrate of one side, pixel electrodes SL connected to the active elements and counter electrodes CL formed on either of the one pair of substrates and impressing electric fields almost parallel with the surface of the substrate in between the pixel electrodes SL, the liquid crystal layer has initial orientational directions of liquid crystal molecules of one direction and also has driving directions of the liquid crystal molecules of not less than two directions in the surface of the substrate.

52. 发明专利

JPH0915650A LIQUID CRYSTAL DISPLAY DEVICE 失效
公开(公告)号：JPH0915650A
公开(公告)日：1997-01-17
申请号：JP1118696
申请日：1996-01-25
申请人： HITACHI LTD
发明人： OTA MASUYUKI , YANAGAWA KAZUHIKO , ASHIZAWA KEIICHIRO , MISHIMA YASUYUKI , OGAWA KAZUHIRO , OE MASATO , KONDO KATSUMI , YANAI MASAHIRO
IPC分类号： G02F1/136 , G02F1/13 , G02F1/1343 , G02F1/1368
摘要： PROBLEM TO BE SOLVED: To provide a device with excellent picture quality capable of driven by a low voltage and low power consumption by being satisfied dielectric anisotropy of a liquid crystal composition, the substantial thickness of the liquid crystal composition layer, the electrode width of a pixel electrode in the latitudinal direction, the electrode width of a counter electrode in the latitudinal direction and the interval between the pixel electrode and the counter electrode with specified relations. SOLUTION: Every pixel is arranged in a crossing area among a scan signal line GL, a counter voltage signal line CL and two pieces of adjacent video signal lines DL. Further, every pixel contains a thin film transistor TFT, a storage capacity Cs+g , the pixel electrode PX and the counter electrode CT. At this time, the dielectric anisotropy Δε of the liquid crystal composition, the substantial thickness deff of the liquid crystal composition, the electrode width Wp of the pixel electrode PX in the latitudinal direction, the electrode width Wc of the counter electrode CT in the latitudinal direction and the interval L between the pixel electrode PX and the counter electrode CT are satisfied with Δε>0, 2.8μm

53. 发明专利

JPH07306417A ACTIVE MATRIX TYPE LIQUID CRYSTAL DISPLAY DEVICE 失效
公开(公告)号：JPH07306417A
公开(公告)日：1995-11-21
申请号：JP3334195
申请日：1995-02-22
申请人： HITACHI LTD
发明人： OE MASATO , KONDO KATSUMI , OTA MASUYUKI
IPC分类号： G02F1/1333 , C09K19/02 , C09K19/20 , C09K19/30 , G02F1/13 , G02F1/133 , G02F1/1337 , G02F1/1343 , G02F1/136
摘要： PURPOSE:To obtain a device having a wide visual field angle and high opening rate by adopting a structure in which electrodes for driving liquid crystals are held by >=2 layers of upper and lower dielectric layers exclusive of the liquid crystal layer for the electrodes for driving liquid crystals and specifying the specific resistance of the liquid crystals to a specific range. CONSTITUTION:The wire-shaped electrodes l, 3, 4 are formed on the inner side of a pair of transparent substrates and orientation control films 5 are applied thereon and are subjected to an orientation treatment. A liquid crystal compsn. is clamped between a pair of the substrates. The bar-shaped liquid crystal molecules 6 are so oriented as to have some angle with the longitudinal direction of the striped electrodes 1, 3, 4 at the time of non-impression of an electric field. Changing of light transmittance by impression of the electric field 9 is made possible by arranging polarizing plates 8 at a prescribed angle 11. The structure in which the electrodes for driving liquid crystals are held by >=2 layers of the upper and lower dielectric layers exclusive of the liquid crystal layer is adopted for the electrodes for driving the liquid crystals. The specific resistance of the liquid crystals is specified to to >=1X10 OMEGA.cm. The opening rate is increased by specifying the specific resistance of the liquid crystals to OMEGA.cm such a manner.

54. 发明专利

JPH07261180A ACTIVE MATRIX TYPE LIQUID CRYSTAL DISPLAY DEVICE 失效
公开(公告)号：JPH07261180A
公开(公告)日：1995-10-13
申请号：JP4681194
申请日：1994-03-17
申请人： HITACHI LTD
发明人： YOKOKURA HISAO , KONDO KATSUMI , OE MASATO , ARAYA SUKEKAZU , OHARA SHUICHI
IPC分类号： G02F1/1337 , G02F1/136
摘要： PURPOSE:To provide a liquid crystal element which can lessen various kinds of unequal display, such as striped unequal static electricity due to rubbing, unequal damage of active elements, unequal display like white dots and unequal luminance, and to greatly improve display quality and product yield in the final so as to reduce the cost by forming the oriented films of orientation control layers of an org. high- molecular substance having a specific glass transition temp. CONSTITUTION:The oriented films 17 of the orientation control layers are formed out of an org. high-molecular substance having the glass transition temp. 150 to 280 deg.C. Wire-shaped source electrodes 3 and common electrodes 4 are formed on the inner side of a pair of the transparent substrates 1 and the oriented films 17 are applied thereon and are subjected to an orientation treatment. A liquid crystal material is interposed therebetween during these treatments. Bar-shaped liquid crystal molecules 5 are so oriented as to have an angle of 45 to 90 deg. to the longitudinal direction of striped source electrodes 3 at the time of not impressing electric fields. The liquid crystal molecules 5 change their directions to be in the electric field direction when the electric field 7 is impressed. Changing of the light transmittance by electric field impression is made possible by arranging polarizing plates 2 at the transmission axes 8 of the polarizing plates.

55. 发明专利

JPH07230074A LIQUID CRYSTAL DISPLAY DEVICE 失效
公开(公告)号：JPH07230074A
公开(公告)日：1995-08-29
申请号：JP2231894
申请日：1994-02-21
申请人： HITACHI LTD
发明人： OTA MASUYUKI , OE MASATO , KONDO KATSUMI
IPC分类号： G02F1/133 , G09G3/36
摘要： PURPOSE:To provide the liquid crystal display device which has high contrast and excellent visual field characteristics at low cost without transparent electrodes by placing the device in operation while the long-axis direction of liquid crystal molecules of a liquid crystal composition material is held almost in parallel to a substrate surface according to electric field intensity based upon the potential difference between pixel electrodes and signal wirings. CONSTITUTION:Linear electrodes 201 and 2092 are formed inside a couple of transparent substrates 203, orientation control films 203 are formed thereupon by coating and oriented, and the liquid crystal composition is sandwiched between them. Rod type liquid crystal molecules 205 are oriented having slight angles to the length direction of the striped electrodes 201 and 202. Then when an electric field 207 is applied, the liquid crystal molecules 205 change their directions to the electric field direction. The polarized light transmission axis of a polarizing plate 206 is arranged at a specific angle 209, and then the light transmittance can be changed by voltage application. In display mode, the long axes of the liquid crystal molecules 205 are always nearly parallel to the substrates 203 and never rise, and then no visual angle dependency is obtained, thereby improving the visual angle characteristics.

56. 发明专利

JPH05127189A COLOR DISPLAY DEVICE 失效
公开(公告)号：JPH05127189A
公开(公告)日：1993-05-25
申请号：JP29121391
申请日：1991-11-07
申请人： HITACHI LTD
发明人： ISOGAI MASATO , ABE HIDETOSHI , KITAMURA TERUO , OE MASATO
IPC分类号： G02F1/1335 , G02F1/1333 , G02F1/1347 , G02F1/139 , G02F1/141
摘要： PURPOSE:To provide a liquid crystal display system and its device whose production is facilitated and where high definition color display is accomplished. CONSTITUTION:This device is constituted of a white light source 5, a 1st color polarizer 3A, an active matrix driving system liquid crystal element 1, a 2nd color polarizer 3B, a 2nd liquid crystal element 2A, a 3rd color polarizer 3C, and a 3rd liquid crystal element 2B. Then, the active matrix driving system liquid crystal element 1 functions as an image forming element, and the 2nd and the 3rd liquid crystal elements 2A and 2B are provided with a function for selectively transmitting the three primary colors of light by the combination of the on/off thereof as an optical switch element, so that the images corresponding to the three primary colors of the light are successively displayed by synchronously driving both of the elements 2A and 2B to realize color display. Thus, middle-definition liquid crystal display is made high-definition. Furthermore, by adding this optical system to a monochrome display, color display is attained.

57. 发明专利

JP2005099881A Liquid crystal display 有权
标题翻译：液晶显示器
公开(公告)号：JP2005099881A
公开(公告)日：2005-04-14
申请号：JP2005002487
申请日：2005-01-07
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： ASHIZAWA KEIICHIRO , OTA MASUYUKI , OGAWA KAZUHIRO , YANAGAWA KAZUHIKO , YANAI MASAHIRO , KONDO KATSUMI , OE MASATO , KONISHI NOBUTAKE
IPC分类号： G02F1/1337 , G02F1/1343
摘要： PROBLEM TO BE SOLVED: To provide a liquid crystal display which has a wide range of a viewing angle at which a color tone is uniform, realizes a viewing angle close to that of a cathode-ray tube, and has improved picture quality. SOLUTION: In the liquid crystal display having a couple of substrates, a liquid crystal layer sandwiched between the couple of substrates, and pixel electrodes and a counter electrode formed on one of the couple of substrates, the counter electrode is parallel to the initial alignment direction of liquid crystal molecules and the pixel electrodes have an angle θ and -θ to the initial alignment direction of the liquid crystal molecules. Further, the pixel electrodes have tilt parts. Further, the pixel electrodes have U-shaped parts. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了提供具有宽范围的色调均匀的视角的液晶显示器，实现了与阴极射线管接近的视角，并且具有改善的图像质量。解决方案：在具有两个基板的液晶显示器中，夹在一对基板之间的液晶层和形成在一对基板中的一个基板上的像素电极和对电极，对电极平行于液晶分子和像素电极的初始取向方向与液晶分子的初始取向方向成角度θ和-θ。此外，像素电极具有倾斜部。此外，像素电极具有U形部分。版权所有（C）2005，JPO＆NCIPI

58. 发明专利

JP2002202515A LIQUID CRYSTAL DISPLAY DEVICE 审中-公开
公开(公告)号：JP2002202515A
公开(公告)日：2002-07-19
申请号：JP2002000021
申请日：2002-01-04
申请人： HITACHI LTD
发明人： ARATANI YOSHIKAZU , HAGEN KRAUSMAN , KONDO KATSUMI , ASHIZAWA KEIICHIRO , OTA MASUYUKI , OE MASATO
IPC分类号： G02F1/1343
摘要： PROBLEM TO BE SOLVED: To provide a liquid crystal display device which is extremely wide in a visual field angle, is entirely free of gradation inversion, is capable of making malti-level display and has a high aperture ratio. SOLUTION: The liquid crystal display device having matrix-form pixel electrode 2 groups formed in such a manner that the electric fields impressed to a liquid crystal layer are nearly paralleled with substrate surfaces, active elements, and prescribed driving means is so constituted that an initial alignment direction 6 of liquid crystals is determined as one direction and that one pixel has plural driving directions for the liquid crystals therein.

59. 发明专利

JP2001194670A LIQUID CRYSTAL DISPLAY DEVICE 失效
公开(公告)号：JP2001194670A
公开(公告)日：2001-07-19
申请号：JP2000364533
申请日：2000-11-27
申请人： HITACHI LTD
发明人： OE MASATO , KONDO KATSUMI
IPC分类号： G02F1/1333 , G02F1/13 , G02F1/133 , G02F1/1335 , G02F1/1337 , G02F1/1343 , G02F1/136 , G02F1/1362 , G02F1/1368
摘要： PROBLEM TO BE SOLVED: To obtain a liquid crystal display device with little after image and high display quality. SOLUTION: In the liquid crystal display device with a pair of substrates and a liquid crystal layer held between the pair of the substrates, a group of electrodes to form an electric field in the liquid crystal layer, an insulation layer and an alignment layer are arranged on the one substrate out of the pair of the substrates and the device is constructed to keep the sum of the thickness of the insulation layer and the alignment layer within >=0.5 μm and

60. 发明专利

JP2000171808A LIQUID CRYSTAL DISPLAY DEVICE 失效
公开(公告)号：JP2000171808A
公开(公告)日：2000-06-23
申请号：JP34442098
申请日：1998-12-03
申请人： HITACHI LTD
发明人： SONODA HIDEHIRO , OE MASATO , ASUMA HIROAKI
IPC分类号： G09F9/30 , G02F1/1333 , G02F1/1339
摘要： PROBLEM TO BE SOLVED: To provide a liquid crystal display device of a transverse electric field system which eliminates the light leakage by spacers, suppresses the disturbance in the electric field between electrodes and enables image display of high quality. SOLUTION: This liquid crystal display device includes a liquid crystal panel, which has at least >=2 kinds of color filters FIL(R), FIL(G),... varying in colors for color display and the black matrices BM interposed between the respective color filters on one substrate S2, is constituted by forming electrode groups PX, CT, CT1, CT2, SD2,... for pixel selection on another substrate SUB1 and is formed by laminating a liquid crystal layer LC consisting of a liquid crystal composition having dielectric anisotropy held between a pair of the substrates and polarizing plates POL1, POL2 on at least one outside surface of a pair of the substrates and a drive means which impresses the drive voltage for display to the electrode groups. In such a case, the device is provided with spacers SP formed by pressing the respective peak surfaces of the projections SP1, which bridge the spacing between the opposite inside surfaces of a pair of the substrates, are formed on the one substrate S2 side and are =108 Ω/cm in the specific resistance.

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