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71. 发明专利

JPH0980453A PRODUCTION OF LIQUID CRYSTAL ELEMENT 失效
公开(公告)号：JPH0980453A
公开(公告)日：1997-03-28
申请号：JP25721895
申请日：1995-09-11
申请人： CANON KK
发明人： YAMASHITA MASATAKA , MIZUNO YU , NOGUCHI KOJI , MORI YOSHIMASA
IPC分类号： G02F1/13 , G02F1/1341
摘要： PROBLEM TO BE SOLVED: To eliminate the splashing of a liquid crystal compsn. caused by foaming of a liquid crystal material, the contamination of an injecting device and an injection defect without the impairment of productivity by subjecting the liquid crystal compsn. past a mixing treatment stage to a deaerating treatment before a liquid crystal injecting stage. SOLUTION: The process for producing the liquid crystal element having the liquid crystal injecting stage for sticking the heated liquid crystal compsn. to the liquid crystal injection port of a liquid crystal cell in an environment of an atm. pressure or below and injecting this liquid crystal compsn. into the display region of the liquid crystal cell is provided with the mixing treatment stage for uniformly mixing plural liquid crystalline compds. constituting the liquid crystal compsn. and a deaerating treatment stage for removing the gases intruded into the liquid crystal compsn. by heating the uniformly mixed liquid crystal compsn. and, further, resting the compsn. in the environment of the atm. pressure or below as the stages before the liquid crystal injecting stage. The resting of the liquid crystal compsn. under the atm. pressure or below after heating the liquid crystal comps. to what deg.C in this deaerating treatment stage is determined by taking the properties of the liquid crystalline compds., the viscosity at the temp. near the transition temp. to the isotropic liquid phase of the liquid crystal compsn., etc., into consideration.

72. 发明专利

JPH08209141A LIQUID CRYSTAL COMPOSITION, LIQUID CRYSTAL ELEMENT CONTAINING THE SAME AND LIQUID CRYSTAL DEVICE CONTAINING THE SAME 失效
公开(公告)号：JPH08209141A
公开(公告)日：1996-08-13
申请号：JP3295695
申请日：1995-01-31
申请人： CANON KK
发明人： YAMASHITA MASATAKA , TERADA MASAHIRO , MORI YOSHIMASA , YAMADA NOBUTSUGU , KATAGIRI KAZUHARU , NOGUCHI KOJI
IPC分类号： G02F1/13 , C09K19/02 , C09K19/34 , C09K19/42 , C09K19/44 , C09K19/46
摘要： PURPOSE: To obtain a liquid crystal composition suppressed in the reduction of drive margin at a low-temperature region by mixing liquid crystal compounds represented by specified formulas with each other in a specified ratio. CONSTITUTION: This composition comprises 0.1-30wt.% each of liquid crystal compounds represented by formulas I and II (wherein R1 and R2 are each a 1-18 C alkyl; X1 , X3 and X4 are each a single bond, O or a group of formula III; X2 is a single bond, OCH2 or a group of formula III; A1 is a group of formula IV; A2 is a group of formula V; and (m) and (n) are each 3-16) and the balance of other liquid crystal compounds. This composition has chiral smectic C phase, and the tilt angle δ of the layer of the chiral smectic C phase has an adjusted value of 3-15 deg. in the temperature range of 0-60 deg.C. A liquid crystal element is prepared by forming a transparent electrode made of a thin film of e.g. SnO2 on a glass base plate, coating the electrode with a single-layer or a multi-layering insulating alignment control layer, holding two such glass base plates with a spacer to keep them distant from each other by about 0.5-20nm, pouring the liquid crystal composition into the space, curing the composition and sticking a polarizing plate to the outside surface of each glass base plate.

73. 发明专利

JP2002170678A ORGANIC ELECTROLUMINESCENT ELEMENT 失效
公开(公告)号：JP2002170678A
公开(公告)日：2002-06-14
申请号：JP2000366549
申请日：2000-12-01
申请人： CANON KK
发明人： MORIYAMA TAKASHI , OKADA SHINJIRO , TAKIGUCHI TAKAO , TSUBOYAMA AKIRA , KOGORI MANABU , KAMATANI ATSUSHI , NOGUCHI KOJI
IPC分类号： C09K11/06 , H01L27/32 , H01L51/50 , H01L51/52 , H05B33/04 , H05B33/14
摘要： PROBLEM TO BE SOLVED: To restrain adverse effect from oxygen, improve initial brightness and restrain performance degradation with time, in an organic EL element of high efficiency which is expected to be still more efficient. SOLUTION: An organic luminescent structure equipped with electrodes opposing each other pinching an organic compound layer 3 including an organic luminescent material layer and an oxygen absorbent 5 are incorporated together to block and seal oxygen, and a phosphorescent luminescent material is used as an organic luminescent material.

74. 发明专利

JP2002116467A METHOD FOR MANUFACTURING LIQUID CRYSTAL DEVICE AND METHOD FOR DRIVING LIQUID CRYSTAL DEVICE 审中-公开
公开(公告)号：JP2002116467A
公开(公告)日：2002-04-19
申请号：JP2001232491
申请日：2001-07-31
申请人： CANON KK
发明人： ASAO YASUSHI , MUNAKATA HIROHIDE , TOGANO TAKESHI , MORI HIDEO , NOGUCHI KOJI , ISOBE RYUICHIRO
IPC分类号： G02F1/141 , G02F1/133 , G09G3/20 , G09G3/36
摘要： PROBLEM TO BE SOLVED: To prevent persistence of a display image by the treatment in a short time. SOLUTION: In the process of manufacturing an active matrix type liquid crystal panel P having a chiral smectic liquid crystal, an ageing voltage is applied on each pixel through a TFT 4. The ageing voltage is controlled to be higher than the maximum of the driving voltage (driving voltage applied on the liquid crystal for image display). The voltage-transmittance characteristics of the liquid crystal are stabilized in a short time by applying the ageing voltage, and it avoids changes in various characteristics during displaying images or prevents persistence of the display image based on the changes in the characteristics.

75. 发明专利

JP2002116426A METHOD OF MANUFACTURING LIQUID CRYSTAL ELEMENT AND METHOD FOR DRIVING THE ELEMENT 审中-公开
公开(公告)号：JP2002116426A
公开(公告)日：2002-04-19
申请号：JP2001232492
申请日：2001-07-31
申请人： CANON KK
发明人： ASAO YASUSHI , MUNAKATA HIROHIDE , TOGANO TAKESHI , MORI HIDEO , NOGUCHI KOJI , ISOBE RYUICHIRO
IPC分类号： G02F1/141 , G02F1/133
摘要： PROBLEM TO BE SOLVED: To perform a processing for preventing the image persistence of a displayed picture from being generated in a short time without the breakage of the circuit of a liquid crystal panel. SOLUTION: When an active matrix type liquid crystal panel P having chiral smectic liquid crystal is manufactured, a voltage for aging is applied between a common electrode 3a and a pixel electrode 3b. As a result, since the voltage- to-transmissivity characteristic of a chiral smectic liquid crystal 2 becomes stable and the characteristics is never changed when a picture is displayed, the image persistence of the displayed picture based on the change of the characteristic is prevented from being generated. In this case, the potential to be applied to the common electrode 3a is made larger and the potential to be applied to the pixel electrode 3b is made to be within the tolerance range of the breakdown voltage of a TFT(thin film transistor) 4. Thus, the TFT 4 is never destroyed by the potential to be applied to the pixel electrode 3b and also a voltage applying time (aging processing time) is shortened by enlarging the voltage to be applied to the liquid crystal 2.

76. 发明专利

JP2001356349A LIQUID CRYSTAL DEVICE AND DISPLAY PANEL 失效
公开(公告)号：JP2001356349A
公开(公告)日：2001-12-26
申请号：JP2001074089
申请日：2001-03-15
申请人： CANON KK
发明人： NOGUCHI KOJI , MUNAKATA HIROHIDE , ISOBE RYUICHIRO
IPC分类号： G02F1/13363 , G02F1/1337 , G02F1/1368 , G02F1/139
摘要： PROBLEM TO BE SOLVED: To reduce decrease in the contrast caused by the temperature characteristics of Δn of the liquid crystal composition. SOLUTION: In the liquid crystal display device having a nematic liquid crystal held between two substrates and having parallel or antiparallel direction of uniaxial alignment of the upper and lower substrates, the alignment state of the liquid crystal molecules are changed so as to compensate the changes in the birefringent of the liquid crystal composition caused by the temperature change to decrease the changes in the retardation of the liquid crystal device with temperature.

77. 发明专利

JP2001228495A LIQUID CRYSTAL ELEMENT AND LIQUID CRYSTAL DEVICE 失效
公开(公告)号：JP2001228495A
公开(公告)日：2001-08-24
申请号：JP2000038696
申请日：2000-02-16
申请人： CANON KK
发明人： NOGUCHI KOJI , MORI YOSHIMASA , TERADA MASAHIRO , ASAO YASUSHI , TOGANO TAKESHI , MORIYAMA TAKASHI , YAGYU MINETO , NUKANOBU TSUNEKI
IPC分类号： G09F9/00 , C09K19/34 , G02F1/13 , G02F1/137 , G02F1/141
摘要： PROBLEM TO BE SOLVED: To prevent the effect of previous-state history and the image. SOLUTION: In an active matrix type liquid crystal panel (P) as shown in figure, a picture display is performed by arranging an alignment control layer at least at the part of a pixel and by applying a reset voltage and a writing voltage to the control layer. As a result, the effect of the display state of a previous frame (the previous-state history) is managed to be small and, also, the image of liquid crystal 2 is prevented.

78. 发明专利

JP2001215534A LIQUID CRYSTAL DEVICE, AND DRIVE METHOD FOR LIQUID CRYSTAL DEVICE 失效
公开(公告)号：JP2001215534A
公开(公告)日：2001-08-10
申请号：JP2000020636
申请日：2000-01-28
申请人： CANON KK
发明人： SHIMIZU KOJI , SATO KOICHI , HANIYU YUKIO , TAKIGUCHI TAKAO , NAKAMURA SHINICHI , NOGUCHI KOJI , YAGYU MINETO , NUKANOBU TSUNEKI
IPC分类号： G09G3/36 , G02F1/133 , G02F1/137 , G02F1/139
摘要： PROBLEM TO BE SOLVED: To prevent occurrence of the display gradation changes, luminance unevenness, etc., which accompany temperature change. SOLUTION: In a liquid crystal panel P1 shown in drawing, since a chiral smectic liquid crystal 2 in which a threshold voltage for switching differs for each domain is used, when a certain write voltage is applied only a domain where the threshold voltage is smaller than the writing voltage is switched, and the domain where the threshold voltage is larger than the write voltage is not switched. Therefore, the area switched by controlling the write voltage changes, and the gradation display can be performed by it. In addition, a liquid crystal material with a small (for example, change per 10 deg.C is 10% or less) temperature change of the threshold voltage is used for the chiral smectic liquid crystal 2, the display gradation change, etc., accompanying the temperature change can be prevented.

79. 发明专利

JP2001133751A METHOD OF DRIVING LIQUID CRYSTAL ELEMENT 失效
公开(公告)号：JP2001133751A
公开(公告)日：2001-05-18
申请号：JP2000253308
申请日：2000-08-24
申请人： CANON KK
发明人： HANIYU YUKIO , SATO KOICHI , NAKAMURA SHINICHI , TAKIGUCHI TAKAO , SHIMIZU KOJI , NOGUCHI KOJI
IPC分类号： G02F1/133 , G09G3/20 , G09G3/36
摘要： PROBLEM TO BE SOLVED: To stably display over a long period of time by preventing an image persistence and aligned state variation of a liquid crystal in an active matrix chiral smectic liquid crystal element. SOLUTION: The liquid crystal is driven by maintaining its maximum tilt angle in real driving in the angular range

80. 发明专利

JP2001021867A LIQUID CRYSTAL DEVICE 失效
公开(公告)号：JP2001021867A
公开(公告)日：2001-01-26
申请号：JP19769299
申请日：1999-07-12
申请人： CANON KK
发明人： HANIYU YUKIO , SATO KOICHI , NAKAMURA SHINICHI , NOGUCHI KOJI , SHIMIZU KOJI , TAKIGUCHI TAKAO
IPC分类号： G02F1/137 , G02F1/133 , G02F1/141
摘要： PROBLEM TO BE SOLVED: To provide a liquid crystal device having V-shape response characteristics and excellent gradation by using a liquid crystal device having V-shape response characteristics and a specified temperature range where a smectic-A phase and a smectic phase having V-shape response characteristics are present as mixed. SOLUTION: The liquid crystal device contains a chiral smectic liquid crystal and has V-shape response characteristics. The chiral smectic liquid crystal consists of a liquid crystal composition containing at least two kinds of liquid crystal compounds having a smectic phase showing V-shape response characteristics in the lower temperature side of the smectic-A phase. The temperature range where the smectic-A phase and the smectic phase having V-shape response characteristics are present as mixed is specified to within 3.0 deg.C. As for the liquid crystal compound having the smectic-A phase and the smectic phase having V-shape response characteristics, a compound expressed by -COOC*HR1-R2 is preferably used. In the formula, R1 is CH3 or CF3 and R2 is a 1 to 20C alkyl group which may have substituents.

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