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1. 发明专利

JP2003186413A DISPLAY 审中-公开
公开(公告)号：JP2003186413A
公开(公告)日：2003-07-04
申请号：JP2001384413
申请日：2001-12-18
申请人： HITACHI LTD , NITTO DENKO CORP
发明人： ADACHI MASAYA , KOMURA SHINICHI , AIZAWA KAORU
IPC分类号： G02B5/20 , G02B5/30 , G02B27/28 , G09F9/00 , G09F9/30 , H01L27/32 , H01L51/50 , H01L51/52 , H05B33/02 , H05B33/14
摘要： PROBLEM TO BE SOLVED: To provide a display which makes a bright display by making the light emitted by a light emission layer contribute to the display with efficiency and has a high contrast ratio by reducing reflection of external light by a reflective member on the reverse surface of the light emission layer. SOLUTION: The display has the light emission layer 100 and the light reflective member arranged on the reverse surface of the light emission layer and is constituted by arranging a polarized light separating means 500, an optical retardation plate 700, and a polarizing plate 600, which separate light in a specified wavelength range corresponding to the light emitted from the light emission layer into two kinds of polarized light components by reflection and transmission, on the top surface side of the light emission layer. COPYRIGHT: (C)2003,JPO

2. 发明专利

JP2000147499A REFLECTION TYPE LIQUID CRYSTAL DISPLAY DEVICE 失效
公开(公告)号：JP2000147499A
公开(公告)日：2000-05-26
申请号：JP31757098
申请日：1998-11-09
申请人： HITACHI LTD , NITTO DENKO CORP
发明人： KOMURA SHINICHI , FUNAHATA KAZUYUKI , YANO SHUJI , UMEMOTO SEIJI , HIYAMA IKUO
IPC分类号： G02F1/1335 , G02F1/13357 , G02F1/1343
摘要： PROBLEM TO BE SOLVED: To attain an image display with high contrast by arranging a film whose refractive index is nearly equal to that of the member for the surface of a reflection type liquid crystal panel which is adhered with adhesive agent whose refractive index is nearly equal to the member for the surface of the reflection type liquid crystal panel on the surface of the reflection type liquid crystal panel, installing a light reflecting means on the film and reflecting illuminating light toward the reflection type liquid crystal panel. SOLUTION: A phase plate 70, a light diffusion layer 80, a polarization plate 90, an adhesive layer 12 and a light guide film 11 are successively provided on the surface of the upper transparent substrate 22. Plural prism parts 11a for reflecting the illuminating light to the rear side of the light guide film 11 are installed on the surface of the light guide film 11. By changing the shape of a groove in accordance with a distance from an illumination lamp 13, the uniform illumination is accomplished by the prism part 11a. The light guide film 11 is adhered to the polarization plate 90 with the adhesive layer 12 whose refractive index is nearly equal to those of the conductive film 11 and the polarization plate 90, then, multiple reflection is not caused, then, the image display with high contrast can be attained.

3. 发明专利

JP2005122110A Display device and method of driving the same 有权
标题翻译：显示装置及其驱动方法
公开(公告)号：JP2005122110A
公开(公告)日：2005-05-12
申请号：JP2004201899
申请日：2004-07-08
申请人： Hitachi Displays Ltd , Hitachi Ltd , 株式会社日立ディスプレイズ , 株式会社日立製作所
发明人： HIROTA SHOICHI , EDO SUSUMU , KANEKO HIRONORI , OSHIMA TETSUYA , SUGITA TATSUYA , KOMURA SHINICHI , FUNAHATA KAZUYUKI
IPC分类号： G02F1/1368 , G02F1/133 , G02F1/167 , G09G3/20 , G09G3/34 , G09G3/36 , H01L27/01 , H01L27/12 , H01L31/0392
CPC分类号： G09G3/3648 , G06F1/3203 , G06F1/3265 , G09G3/2011 , G09G3/2074 , G09G3/2077 , G09G3/3433 , G09G3/3655 , G09G3/3659 , G09G2300/0465 , G09G2300/0842 , G09G2310/0262 , G09G2310/04 , G09G2310/06 , G09G2320/0247 , H01L27/12 , Y02D10/126 , Y02D10/153
摘要： PROBLEM TO BE SOLVED: To provide a display device having in combination super-high fineness display performance on a par with that of printed matter due to a single channel transistor configuration and a low electric power consumption property due to low-frequency driving. SOLUTION: A reference voltage line 108 is synchronously scanned with scanning of a scanning signal line 109, electric potential of the reference voltage line is set to be the potential of a common electrode 120 by synchronizing with the scanning signal line, the second transistor is set to be OFF state during the reference voltage line is set in the common potential for a pixel wherein a node 125 between an image signal memory 124 and the second transistor 122 is set in the potential so that the second transistor becomes OFF and the potential of a signal line 110 is set to be high level when the potential of the scanning signal line changes from high level to low level for the pixel wherein the node between the image signal memory and the second transistor is set in the potential so that the second transistor becomes ON. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：解决的问题：提供一种由于单通道晶体管配置而具有与印刷物质量相当的超高精度显示性能的显示装置和由于低频驱动而导致的低功耗特性。解决方案：通过扫描信号线109的扫描同步扫描参考电压线108，通过与扫描信号线同步将参考电压线的电位设置为公共电极120的电位，第二在参考电压线被设置为其中图像信号存储器124和第二晶体管122之间的节点125被设置为电位以使得第二晶体管变为截止的像素的公共电位时，将晶体管设置为截止状态，并且当图像信号存储器和第二晶体管之间的节点被设置为电位时，扫描信号线的电位从高电平变为低电平时，将信号线110的电位设置为高电平，第二晶体管导通。版权所有（C）2005，JPO＆NCIPI

4. 发明专利

JP2004286836A Electrophoresis display device and method manufacturing the same 有权
公开(公告)号：JP2004286836A
公开(公告)日：2004-10-14
申请号：JP2003076013
申请日：2003-03-19
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KANEKO HIRONORI , OSHIMA TETSUYA , SUGITA TATSUYA , KOMURA SHINICHI , HIROTA SHOICHI , SASAKI HIROSHI
IPC分类号： G02F1/1339 , G02F1/167
CPC分类号： G02F1/167 , G02F1/13394
摘要： PROBLEM TO BE SOLVED: To provide an electrophoresis display device in which uniform display characteristics in a surface are obtainable by uniformly disposing an insulating solvent in minute spaces partitioned for each pixel.
SOLUTION: The electrophoresis display device is equipped with transparent first and second substrates 1, 2 disposed so as to hold a specified gap in between, charged particles 6 dispersed in the insulating solvent 5 disposed in the gap and first and second electrodes 3, 4 disposed either on the first substrate 1 or on the second substrate 2 and, at the same time, is constructed so as to arrange the insulating solvent 5 on lyophilic parts on the surfaces of the first and second substrates 1, 2 by arranging lyophobic parts 8 and the lyophilic parts 9 on the surfaces of the first and second substrates 1, 2.
COPYRIGHT: (C)2005,JPO&NCIPI

5. 发明专利

JP2004206075A Driving method of liquid crystal display, and liquid crystal display 有权
公开(公告)号：JP2004206075A
公开(公告)日：2004-07-22
申请号：JP2003355776
申请日：2003-10-16
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SEKIGUCHI YOSHIFUMI , HIROTA SHOICHI , KOMURA SHINICHI , EDO SUSUMU
IPC分类号： G02F1/133 , G09G3/20 , G09G3/36
CPC分类号： G09G3/3648 , G09G3/3614 , G09G3/3677 , G09G3/3688 , G09G2310/06 , G09G2320/0204 , G09G2320/0209 , G09G2320/0214 , G09G2320/0219 , G09G2320/0247
摘要： PROBLEM TO BE SOLVED: To eliminate flickering occurring in display when a driving frequency is set low. SOLUTION: When driving by separating one frame period T into a scanning period T1 and a holding period present immediately after the scanning period, respective signal wirings are repeated alternately between a straight polarity frame period and a negative frame period. Further, when the straight polarity signal wirings and negative polarity signal wirings are alternately repeated during a certain frame period for every column, a voltage V sigm in the holding period of the straight polarity signal wirings is always set larger than an opposing electrode voltage V com , and the voltage V sigm in the holding period of the negative polarity signal wiring is always set smaller than the opposing electrode voltage V com . COPYRIGHT: (C)2004,JPO&NCIPI

6. 发明专利

JP2002236289A LIQUID CRYSTAL DISPLAY DEVICE 失效
公开(公告)号：JP2002236289A
公开(公告)日：2002-08-23
申请号：JP2001034014
申请日：2001-02-09
申请人： HITACHI LTD
发明人： UCHIUMI YUKA , HIYAMA IKUO , KOMURA SHINICHI , KONDO KATSUMI
IPC分类号： G02F1/133 , G02F1/1335 , G02F1/13357 , G02F1/1368 , G09F9/00
摘要： PROBLEM TO BE SOLVED: To reduce blue fog caused by the fluctuation of the threshold in the panel surface and blue fog in a low luminance area in a normally closed type liquid crystal display device utilizing birefringence and to provide a liquid crystal display device provided with a means for maintaining satisfactory image quality. SOLUTION: In the liquid crystal display device including a normally closed type liquid crystal display panel wherein a liquid crystal layer 10 is sealed between a pair of substrates 13 and 14 which are superposed on each other at a prescribed interval and at least, one of which is transparent and polarizing plates 11 and 12 are disposed on the outer sides of respective substrates, a light source unit and a light guide 3 disposed under the liquid crystal panel and making the emitted light of the light source unit enter uniformly into the liquid crystal display panel, a spectrum absorbing means 40 absorbing light having 400-440 nm visible wavelength region of the emitted light from a light source 1 of the light source unit is provided in any position from the light source unit to the upper surface of the liquid crystal display panel.

7. 发明专利

JPH11218762A LIQUID CRYSTAL DISPLAY DEVICE 失效
公开(公告)号：JPH11218762A
公开(公告)日：1999-08-10
申请号：JP31634998
申请日：1998-11-06
申请人： HITACHI LTD , HITACHI DEVICE ENG
发明人： HIRAKATA JUNICHI , KONDO KATSUMI , ABE HIDETOSHI , ITO OSAMU , HIYAMA IKUO , KITAJIMA MASAAKI , KOMURA SHINICHI , SUZUKI KENKICHI , KIKUCHI NAOKI , MADOKORO HITOMI
IPC分类号： G02F1/133 , G02B5/30 , G02F1/1333 , G02F1/1335 , G02F1/13363
摘要： PROBLEM TO BE SOLVED: To improve the contrast, the visual angle characteristic and the display uniformness by arranging a specific double refraction medium between a liquid crystal layer and at least one of the polarizing plates and setting the delay phase axis of the medium to the angle which is capable of compensating for the residual phase difference of the layer. SOLUTION: The device is provided with the liquid crystal layer, in which the twist angles of nematic liquid crystals are set in the range of 180 to 360 degrees between top and bottom substrates, a pair of polarizing plates 1 and 10 which hold the layer and the control means which varies the transmitted liquid quantity of the liquid crystals by applying the voltage having more than two values between electrodes. A double refraction medium 3 is arranged between the layer and at least one of polarizing plates 1 and 10. The medium 3 has the phase difference, which is equal to the residual phase difference of the boundary section of the layer while the voltage is applied having different tilt angles of liquid crystal molecules 7 of the boundary section of the substrate of the layer and the liquid crystal molecules between other substrates, or the phase difference in the range of 0.1 to 0.2 μm. Moreover, a delayed phase axis 4 of the medium 3 is set to the angle which is capable of compensating for the residual phase difference of the liquid crystal layer.

8. 发明专利

JPH10232401A LIQUID CRYSTAL DISPLAY DEVICE 失效
公开(公告)号：JPH10232401A
公开(公告)日：1998-09-02
申请号：JP3464597
申请日：1997-02-19
申请人： HITACHI LTD
发明人： UCHIUMI YUUKA , KOMURA SHINICHI , ARAYA SUKEKAZU , YONETANI SHIN
IPC分类号： G02F1/1339 , G02F1/136 , G02F1/1368
摘要： PROBLEM TO BE SOLVED: To suppress optical leakage around a spacer in shade display or in the vicinity of the shade display by decreasing an electric field applied to a liquid crystal layer very near the surface of the spacer lower than an electric field determined by a voltage between electrodes formed on a substrate. SOLUTION: This liquid crystal display device holes a liquid crystal layer 54 between substrates 51, 52, which are laminated via a spacer 50 so as to form approximately a fixed thickness of the liquid crystal layer 54. Here, a dielectric constant of the spacer is made to be 1.2 times as high as an effective component of the dielectric constant or more, namely, the sum of those individual components in the direction of the electric field which are vertical and horizontal components of the dielectric constant of the liquid crystal material. And, when an electric field 9 is impressed on the liquid crystal layer 54 by electrodes 1, 4 formed on the substrate 52, the electric field 9 becomes close in the spacer 50 and becomes rough about the surface of the spacer 50. Therefore, since the electric field 9 is weakened about the surface of the spacer, a threshold voltage increases apparently. Thus, an increase in an optical transmittance is suppressed and optical leakage around the spacer 50 is suppressed.

9. 发明专利

JPH09194421A CYCLIC ENONE COMPOUND AND LIQUID CRYSTAL DISPLAY DEVICE PRODUCED BY USING THE COMPOUND 失效
公开(公告)号：JPH09194421A
公开(公告)日：1997-07-29
申请号：JP710796
申请日：1996-01-19
申请人： HITACHI LTD
发明人： KAGAWA HIROYUKI , RUIIZU DAIAN FUARANDO , UCHIUMI YUUKA , KOMURA SHINICHI , KONDO KATSUMI , DEBUITSUDO AREN DANMAA , CHIYAARUZU MAIKERU MAASON , JIEEN MORERU
IPC分类号： G02F1/13 , C07C49/613 , C07C49/657 , C07C49/693 , C07C49/723 , C07C49/753 , C07C69/16 , C07D319/06 , C09K19/06
摘要： PROBLEM TO BE SOLVED: To obtain a new cyclic enone compound useful for producing a liquid crystal composition and a liquid crystal display device drivable at a low voltage, exhibiting excellent picture quality and having high safety. SOLUTION: This cyclic enone compound is expressed by formula I (A is an atomic group having a 6-membered ring structure; R1 is a substituent containing a long-chain hydrocarbon chain; R2 is H or methyl; R3 is a halogen, OH or a substituent containing at least one carbon atom) or formula II (A1 and A2 are each an atomic group having a 6-membered ring structure), e.g. 3-(4-4'-hexyloxybiphenyl)-5-fluoro-2-methylcyclopent-2-en-1-one. The compound of formula I, e.g. the exemplified compound can be produced by dropping n- butyllithium into a tetrahydrofuran solution of diisopropylamine, adding 3-(4-4'- hexyloxybiphenyl)-2-methylcyclopent-2-en-1-one to the mixture and reacting with N-fluorodibenzenesulfonimide.

10. 发明专利

JPH09105903A LIQUID CRYSTAL DISPLAY DEVICE 失效
公开(公告)号：JPH09105903A
公开(公告)日：1997-04-22
申请号：JP26270395
申请日：1995-10-11
申请人： HITACHI LTD
发明人： MORI YUJI , KOMURA SHINICHI , HIYAMA IKUO , TAKEDA NOBUHIRO , SASAKI TORU
IPC分类号： G02F1/133 , G02F1/1333 , G02F1/1345 , G09G3/36
摘要： PROBLEM TO BE SOLVED: To provide a liquid crystal display device in which the readout frequency of the picture data in a display memory is lowered and whose power consumption is reduced and whose size is made small by incorporating the display memory on the substrate of a display screen. SOLUTION: In a liquid crystal display device having a first substrate 1 on which transparent electrodes 4 are formed, a second substrate 2 confronted with the first substrate 1 and on which electrodes 5 are formed and a liquid crystal layer 3 held in between the both substrates, a memory area 9 storing the picture data of a display picture is formed on the second substrate 2 and a display area is formed like covering the memory area 9 and moreover the device has plural layers of insulating layers 6, 8 held in between the memory area 9 and the display area and an equipotential layer 7 held in between the insulating layers 6, 8.

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