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1. 发明专利

JP2002226495A METAL COORDINATION COMPOUND, LIGHT EMITTING ELEMENT AND DISPLAY DEVICE 审中-公开
公开(公告)号：JP2002226495A
公开(公告)日：2002-08-14
申请号：JP2001344550
申请日：2001-11-09
申请人： CANON KK
发明人： TAKIGUCHI TAKAO , TSUBOYAMA AKIRA , OKADA SHINJIRO , NOGUCHI KOJI , MORIYAMA TAKASHI , KAMATANI ATSUSHI , KOGORI MANABU
IPC分类号： H01L51/50 , C07D213/16 , C07D213/26 , C07D213/50 , C07D213/61 , C07D213/63 , C07D215/04 , C07D215/20 , C07D231/12 , C07D233/54 , C07D233/58 , C07D235/04 , C07D263/54 , C07D277/62 , C07F15/00 , C09K11/06 , H01L51/00 , H01L51/30 , H05B33/14
摘要： PROBLEM TO BE SOLVED: To obtain a light emitting element having high-efficiency luminescence, maintaining high brightness for a long period of time and less conduction deterioration. SOLUTION: This light emitting element is characterized by having an organic compound layer containing a metal coordination compound represented by general formula (1) M is Ir, Pt, Rh or Pd; n is 2 or 3; Y is a 2-6C alkylene group; ring A is a cyclic group containing a nitrogen atom bonded to M and may contain a substituent group).

2. 发明专利

JP2002116466A LIQUID CRYSTAL DEVICE 失效
公开(公告)号：JP2002116466A
公开(公告)日：2002-04-19
申请号：JP2000308217
申请日：2000-10-06
申请人： CANON KK
发明人： ISOBE RYUICHIRO , NOGUCHI KOJI , MUNAKATA HIROHIDE , ASAO YASUSHI , TOGANO TAKESHI
IPC分类号： G02B5/30 , C09K19/02 , G02F1/13363 , G02F1/137 , G02F1/141 , G09F9/35
摘要： PROBLEM TO BE SOLVED: To prevent degradation in color reproducibility in a color display liquid crystal panel. SOLUTION: When no electric field is applied on a liquid crystal panel 2, the average molecular axis of the liquid crystal 21 is in the direction denoted as 21a shown in Figure. The light irradiating a polarizer 4 is converted into linearly polarized light as propagating through the polarizer 4, then rotated into the direction denoted as 21c as propagating through the liquid crystal panel 2, and further rotated into the direction denoted as 3b as propagating through a uniaxial phase compensation member 3. The light passes a polarizer 5 to produce a white display state. On the other hand, when an electric field is applied on the liquid crystal panel 2 to align the average molecular axis of the liquid crystal into the position denoted as 21b, the light is rotated into the same direction as the sign 4a as propagating the liquid crystal panel 2 and the uniaxial phase compensation member 3. The light can not pass the polarizer 5, which produces a black display state. By driving the device as above described, degradation in the color reproducibility is prevented.

3. 发明专利

JP2002116422A METHOD OF MANUFACTURING LIQUID CRYSTAL ELEMENT AND METHOD OF DRIVING THE ELEMENT 审中-公开
公开(公告)号：JP2002116422A
公开(公告)日：2002-04-19
申请号：JP2001232490
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： G02F1/13 , G02F1/133 , G02F1/139
摘要： PROBLEM TO BE SOLVED: To prevent the image persistence of a displayed picture from being generated. SOLUTION: When an active matrix type liquid crystal panel having chiral smectic liquid crystal is manufactured, a voltage for aging is applied to each pixel via a TFT(thin film transistor) 4. In this case, the voltage for aging to be applied to liquid crystal is made to become much by elongating the gate-on time of the TFT 4. Since the voltage-to-transmissivity characteristic of liquid crystal becomes stable by the voltage for aging to be applied in this manner and the characteristic 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.

4. 发明专利

JP2001092421A METHOD FOR DRIVING LIQUID CRYSTAL ELEMENT 失效
公开(公告)号：JP2001092421A
公开(公告)日：2001-04-06
申请号：JP26953599
申请日：1999-09-22
申请人： CANON KK
发明人： NOGUCHI KOJI , SATO KOICHI , HANIYU YUKIO , NUKANOBU TSUNEKI , YAGYU MINETO
IPC分类号： G09G3/36 , G02F1/133 , G09G3/20
摘要： PROBLEM TO BE SOLVED: To prevent a frame frequency from lowering and to prevent a display from becoming dark. SOLUTION: When an active matrix type liquid crystal panel P is driven, a picture is displayed by applying a gate voltage Vg to the gate electrode 5a of a TFT 5 for every frame and also by applying a write voltage +VD or -VD to the source electrode 5b of the FTF 5. Then, the frame frequency is prevented from lowering and the display is prevented from becoming dark by performing such a display without applying a reset voltage to the panel P.

5. 发明专利

JP2001059958A METHOD FOR DRIVING LIQUID CRYSTAL ELEMENT 失效
公开(公告)号：JP2001059958A
公开(公告)日：2001-03-06
申请号：JP23632599
申请日：1999-08-24
申请人： CANON KK
发明人： SATO KOICHI , SHIMIZU KOJI , HANIYU YUKIO , NAKAMURA SHINICHI , TAKIGUCHI TAKAO , NOGUCHI KOJI
IPC分类号： G09G3/36 , G02F1/133 , G09F9/35 , G09G3/20
摘要： PROBLEM TO BE SOLVED: To prevent orientation degradation or burning due to aging and to obtain a method for driving liquid crystal having quick response and high picture quality by applying a shut-down signal with which the absolute value of voltage is gradually reduced for a specified period and then making an element to be an off-state, after applying of the display signal is completed. SOLUTION: A liquid crystal element having a V-shaped response characteristic utilizing chiral smectic liquid crystal has normally a stable state in an intermediate position between two uniformly oriented states as a normal state. In this element, so called frame inversion drive which drives an element voltage signal by polarity inversion frame by frame is preferably utilized so that DC voltage is not continuously applied to the liquid crystal and the liquid crystal oriented state is inverted by interposing the normal state frame by frame to execute display of a picture and the like. After completing applying of a display signal, a signal with which an absolute value of voltage is gradually reduced is applied for a specified period and then the element is made to be an off-state and left standing. Thereby, change of a switching characteristic of the element after the element is left standing is extremely suppressed.

6. 发明专利

JP2001021895A LIQUID CRYSTAL DEVICE 失效
公开(公告)号：JP2001021895A
公开(公告)日：2001-01-26
申请号：JP19709499
申请日：1999-07-12
申请人： CANON KK
发明人： HANIYU YUKIO , NAKAMURA SHINICHI , SATO KOICHI , NOGUCHI KOJI , SHIMIZU KOJI , TAKIGUCHI TAKAO
IPC分类号： C09K19/02 , C09K19/32 , G02F1/133 , G02F1/1337 , G02F1/137 , G02F1/141
摘要： PROBLEM TO BE SOLVED: To improve problems of improper gradation or deterioration in contrast by constituting a liquid crystal layer of an interface layer consisting of a liquid crystal formed on the interface with one of substrates having an alignment controlling layer and of a liquid crystal layer excluding the interface layer consisting of a liquid crystal having smaller spontaneous polarization than the liquid crystal in the interface layer. SOLUTION: The liquid crystal layer 18 has an interface layer formed on the interface with at least one of substrates 11, 12 having orientation controlling layers 15, 17, respectively, and a bulk layer excluding the interface layer, these layers consist of different liquid crystals from each other. Both of the liquid crystal A which constitutes the interface layer and the liquid crystal B which constitutes the bulk layer show V-shape response characteristics when used in a single state, and the liquid crystal B has smaller spontaneous polarization than the liquid crystal A. Specifically, an antiferroelectric liquid crystal is preferably used. As for the means to form the interface layer, for example, the liquid crystal A is dissolved or dispersed if necessary in a solvent and applied on the surface of the substrate before the cell is formed.

7. 发明专利

JP2001021866A METHOD FOR DRIVING LIQUID CRYSTAL ELEMENT 失效
公开(公告)号：JP2001021866A
公开(公告)日：2001-01-26
申请号：JP19709399
申请日：1999-07-12
申请人： CANON KK
发明人： HANIYU YUKIO , NAKAMURA SHINICHI , SATO KOICHI , TAKIGUCHI TAKAO , NOGUCHI KOJI , SHIMIZU KOJI , MORIYAMA TAKASHI
IPC分类号： G09G3/36 , G02F1/133
摘要： PROBLEM TO BE SOLVED: To display with analog gradation and high contrast without causing gradation deviation by driving a liquid crystal only in the range from a stable state of the liquid crystal when no voltage is applied to the state showing changes in brightness without domains. SOLUTION: The liquid crystal element is produced by holding a liquid crystal layer 18 between a pair of substrates 11, 12. A common electrode 16 is formed on the substrate 12 facing pixel electrodes 13. A referential voltage is applied on the common electrode 16. A voltage according to the information signal voltage is applied on the liquid crystal layer 18 to change the transmittance to display with gradation. The liquid crystal element is a chiral smectic liquid crystal element having one stable state when no voltage is applied. The chiral smectic liquid crystal element showing V-shape response characteristics causes changes in the brightness without domains and causes the changes in the brightness due to inversion of domains in the switching process depending on the voltage applied. The driving conditions for the liquid crystal are determined by avoiding the range where the brightness changes due to the inversion of domains but in the range where the brightness changes without domains.

8. 发明专利

JP2000297283A LIQUID CRYSTAL ELEMENT AND ITS DRIVING METHOD 失效
公开(公告)号：JP2000297283A
公开(公告)日：2000-10-24
申请号：JP10752399
申请日：1999-04-15
申请人： CANON KK
发明人： NOGUCHI KOJI , SATO KOICHI , HANIYU YUKIO , TERADA MASAHIRO , YAGYU MINETO , NUKANOBU TSUNEKI
IPC分类号： G09G3/36 , C09K19/02 , G02F1/13 , G02F1/133 , G02F1/1337
摘要： PROBLEM TO BE SOLVED: To obtain a liquid crystal element that has excellent displaying properties and is useful for flat panel display, or the like, by holding a specific chiral smectic liquid crystal between a couple of base plates to make the smectic liquid crystal an active matrix type and setting the ion quantity in the element less than a specific value. SOLUTION: A pair of base plates, for example, glass plates are allowed to hold a chiral smectic liquid crystal (for example, a liquid crystal composition comprising a compound of the formula, or the like) to make an active matrix type liquid crystal element that has a plurality of pixels, and the liquid crystals for individual pixels are matrix-driven by the active elements (preferably transistors) arranged to individual pixels, so that the liquid crystal may show the domain gradient and the ion amount in the element is adjusted to

9. 发明专利

JP2000290653A LIQUID CRYSTAL DEVICE AND LIQUID CRYSTAL APPARATUS MOUNTING THE DEVICE 失效
公开(公告)号：JP2000290653A
公开(公告)日：2000-10-17
申请号：JP10329799
申请日：1999-04-09
申请人： CANON KK
发明人： SATO KOICHI , HANIYU YUKIO , NOGUCHI KOJI , TERADA MASAHIRO , MORI YOSHIMASA
IPC分类号： G09F9/35 , C09K19/42 , G02F1/13 , G02F1/133
摘要： PROBLEM TO BE SOLVED: To provide a liquid crystal device designed to resolve such problems as afterimage due to liquid crystal hysteresis, liquid crystal aligning deterioration and image sticking, and to provide a liquid crystal apparatus mounting the liquid crystal device. SOLUTION: This liquid crystal device is such one as to use a chiral smectic liquid crystal 21 held by a pair of substrates 41, 42 and having monostability, namely, a fluorine-contg. chiral liquid crystal compound having smectic or potentially smectic phase, along with such a chiral smectic liquid crystal composition composed exclusively of a group of compounds made up of (a) fluorochemical terminal segment having at least one methylene group and optionally having at least one in-chain ether oxygen, (b) chiral or achiral saturated hydrocarbon terminal segment, and (c) a central core segment binding the above segments thereto, and have the function to alternately apply pole-reversing drive voltage to the liquid crystal 21 by electrodes 43 provided on the substrates 41, 42 to conduct light modulation.

10. 发明专利

JP2000191657A THIOPHENE COMPOUND, LIQUID CRYSTAL COMPOSITION CONTAINING THE SAME, LIQUID CRYSTAL DEVICE HAVING THE COMPOSITION, AND DISPLAY DEVICE AND METHOD OF DISPLAY USING THE SAME 失效
公开(公告)号：JP2000191657A
公开(公告)日：2000-07-11
申请号：JP36873898
申请日：1998-12-25
申请人： CANON KK
发明人： TAKIGUCHI TAKAO , NAKAMURA SHINICHI , HANIYU YUKIO , SATO KOICHI , SHIMIZU KOJI , NOGUCHI KOJI
IPC分类号： C07D333/24 , C07D409/04 , C09K19/34 , G02F1/13
摘要： PROBLEM TO BE SOLVED: To obtain a new compound capable of giving a liquid crystal composition good in switching characteristics and having excellent properties including quick responsiveness, diminished temperature dependency of optical speed of response and high contrast. SOLUTION: This new thiophene compound is a compound of the formula R1-A1-A2-B1-A3-B2-A4-R2 [R1 and R2 are each a 1-20C alkyl; A1 and, A2 are each a (substituted) 1,4-phenylene, pyridine-2,5-diyl, or the like; A3 and A4 are each a (substituted) 1,4-phenylene, pyrimidine-2,5-diyl, or the like; B1 and B2 are each a single bond, COO, OOC, or the like], e.g. 6-[4-(5-octylthiophen-2-yl) benzenecarbonyloxy]-1,2,3,4-tetrahydro-2-naphthalenecarboxylic acid (R)-1,1,1- trifluoro-2-hexyl ester of formula I. The aimed compound is obtained, in the case of the compound of formula I, by reducing and then esterifying a compound of formula II to form a compound of formula III which is then reacted with benzyl bromide, or the like.

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