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11. 发明专利

JP2001166340A CHOLESTERIC LIQUID CRYSTAL DISPLAY ELEMENT AND CHOLESTERIC LIQUID CRYSTAL DISPLAY DEVICE 失效
公开(公告)号：JP2001166340A
公开(公告)日：2001-06-22
申请号：JP35122399
申请日：1999-12-10
申请人： FUJI XEROX CO LTD
发明人： HIJI NAOKI , YAMAMOTO SHIGERU , HIKIJI TAKETO , SUZUKI SADAICHI
IPC分类号： G02F1/137 , G02F1/133 , G02F1/1335
摘要： PROBLEM TO BE SOLVED: To obtain a display device in which the efficiency of time use can be increased and a bright display with high contrast can be obtained for the display screen of animated images, and for the display of static images, the content of the display can be held with no or a little power supply without repeatedly writing or continuously applying a bias voltage. SOLUTION: The cholesteric liquid crystal used has a selective reflection wavelength region in the visible region, to which a black dichroic dye is added. A light-reflecting layer to reflect the light in the selective reflection wavelength region of the cholesteric liquid crystal is formed on the opposite side of the cholesteric liquid crystal layer to the observation side. In the animation mode, a driving signal S1 consisting of a selecting signal to change the cholesteric liquid crystal into homeotropic alignment or focal conic alignment and a holding signal to hold the aligned state selected by the selecting signal are applied on the colesteric liquid crystal layer in each frame. When the static image mode is switched from the animation mode, the voltage on the cholesteric liquid crystal layer is reduced to zero. Therefore, the liquid crystal is subjected to transition from the homeotropic alignment to planar alignment, and the content of the display can be held without power supply by the bistability of the planar alignment and focal conic alignment.

12. 发明专利

JP2001083496A PRODUCTION OF POLYMER NETWORK TYPE CHOLESTERIC LIQUID CRYSTAL DEVICE 失效
公开(公告)号：JP2001083496A
公开(公告)日：2001-03-30
申请号：JP25875899
申请日：1999-09-13
申请人： FUJI XEROX CO LTD
发明人： YAMAMOTO SHIGERU , HIKIJI TAKETO , HIJI NAOKI , SUZUKI SADAICHI
IPC分类号： G02F1/1334 , G02F1/1333
摘要： PROBLEM TO BE SOLVED: To obtain a device as a polymer network type cholesteric liquid crystal device which can be stabilized into a focal conic state in a short time and which can be driven at a low voltage. SOLUTION: A prepolymer containing a nematic liquid crystal having positive dielectric anisotropy, a chiral agent, a monomer and a polymerization initiator is injected into the space between substrates 1, 3 having electrodes 2, 4 formed thereon. By initiating the polymerization of the prepolymer in the state of the prepolymer showing an isotropic phase, and by polymerizing and phase separating the prepolymer while applying an electric field between the electrodes 2, 4, a cholesteric liquid crystal layer 5 having a polymer network structure showing perpendicular alignment of the polymer network 6 is formed.

13. 发明专利

JP2000267123A LIGHT CONTROLLING DEVICE 失效
公开(公告)号：JP2000267123A
公开(公告)日：2000-09-29
申请号：JP7022399
申请日：1999-03-16
申请人： FUJI XEROX CO LTD
发明人： SUZUKI SADAICHI , YAMAMOTO SHIGERU , HIKIJI TAKETO , HIJI NAOKI
IPC分类号： G02F1/137 , G02F1/133 , G02F1/1343 , G02F1/1347 , G02F1/139
摘要： PROBLEM TO BE SOLVED: To decrease the influences of reflection by electrodes and to improve the contrast in a cholesteric liquid crystal display device. SOLUTION: In the display device 10, signal electrodes 4a are formed on a substrate 2 and scanning electrodes 5a are formed on a substrate 1, both in the substrate plane direction and facing each other. Then a cholesteric liquid crystal 3 is injected to the space between the substrate 1, 2. When an electric field is not applied between the electrodes 4a, 5a, the cholesteric liquid crystal 3 is in a planar state and the axis 3h of the helix is perpendicular to the substrate plane. An electric filed over the threshold is applied perpendicularly to the axis 3h of the helix by a driving circuit 20 to align the liquid crystal molecules of the cholesteric liquid crystal 3 in the parallel or perpendicular direction to the substrate plane. Thus, the cholesteric liquid crystal 3 is changed into a transparent state. Since the electrodes 4a, 5a do not cover the pixel plane, a transparent electrode such as an ITO electrode is not required and various kinds of metals can be used.

14. 发明专利

JP2000147547A MULTICOLOR DISPLAY DEVICE 失效
公开(公告)号：JP2000147547A
公开(公告)日：2000-05-26
申请号：JP32110898
申请日：1998-11-11
申请人： FUJI XEROX CO LTD
发明人： HIJI NAOKI , YAMAMOTO SHIGERU , HIKIJI TAKETO , SUZUKI SADAICHI
IPC分类号： G02F1/1335 , G02F1/1347 , G02F1/137
摘要： PROBLEM TO BE SOLVED: To obtain a clear and bright multicolor display with a reduced number of display layers, which results in smaller parallax and cost. SOLUTION: A cell 51 having a display layer 31 comprising a right twist cholesteric liquid crystal which selectively reflects blue light, a cell 53 having a display layer 33 comprising a left twist cholesteric liquid crystal which selectively reflects green light, a cell 57 having a display layer 37 comprising a right twist cholesteric liquid crystal which selectively reflects yellow light and a cell 55 having a display layer 35 comprising a left twist cholesteric liquid crystal which selectively reflects and light are laminated successively from the viewer's side. A color filter 43 which transmits red light and absorbs light of other colors is provided between the cells 57 and 55 and a black light absorption layer 41 is formed on the rear side of the cell 55.

15. 发明专利

JP2000066245A CHOLESTERIC LIQUID CRYSTAL DISPLAY DEVICE 失效
公开(公告)号：JP2000066245A
公开(公告)日：2000-03-03
申请号：JP23834698
申请日：1998-08-25
申请人： FUJI XEROX CO LTD
发明人： HIJI NAOKI , YAMAMOTO SHIGERU , HIKIJI TAKETO , SAGAWA SHIMIZU , NINOMIYA MASANOBU , SUZUKI SADAICHI
IPC分类号： G02F1/137 , G02F1/1335
摘要： PROBLEM TO BE SOLVED: To improve the reflectance of a cholesteric liq. crystal display device with simple structure and with hardly generating parallax. SOLUTION: A cholesteric liq. crystal layer 16 is formed by injecting a cholesteric liq. crystal 15 dissolved a fluorescent dye 18 between two transparent substrates 11, 13 provided with transparent electrodes 12, 14. A light absorbing layer 17 is formed on the rear side of the substrate 13. A light emission spectrum of the fluorescent dye 18 is regulated so as to superimpose with selecting reflection spectrum of the cholesteric liq crystal 15, so that the cholesteric liq. crystal 15 reflects a fluorescence generated by the fluorescent dye 18. When light absorbance of the fluorescent dye 18 is enough elevated, fluorescence is essentially generated near a surface of an observer side of the cholesteric liq. crystal layer 16. Then when the cholesteric liq. crystal 15 is in a planar state, a fluorescent component irradiated into a half space of the side of the light absorbing layer 17 is reflected by the cholesteric liq. crystal 15 and reaches to the observer. A component irradiated to the observer side also partially reaches with scattering to the observer. Therefore, brightness in bright displaying is improved.

16. 发明专利

JPH11231135A HOLOGRAM LIGHT CONTROLLABLE ELEMENT AND ITS PRODUCTION 失效
公开(公告)号：JPH11231135A
公开(公告)日：1999-08-27
申请号：JP3781098
申请日：1998-02-19
申请人： FUJI XEROX CO LTD
发明人： SUZUKI SADAICHI , YAMAMOTO SHIGERU , SAGAWA SHIMIZU , HIKIJI TAKETO , HIJI NAOKI , NINOMIYA MASANOBU
IPC分类号： G02B5/32 , G02F1/13
摘要： PROBLEM TO BE SOLVED: To make it possible to widen the reflection spectral width of a hologram light control element, to provide a bright display as a reflection type display and to obtain sufficient whiteness. SOLUTION: A photosetting high-polymer material is applied on a transparent substrate formed with transparent electrodes and is irradiated with a laser beam from both sides of the layer, by which cured parts and uncured parts are alternately formed to a laminar form. The uncured high-polymer material is eluted to form holes 1 and photostructure changing materials 2 are injected into the holes 1 to have the photostructure changing materials 2 adsorbed in the inside wall surfaces of the holes 1. Next, liquid crystal are injected into the holes 1 to substitute the photostructure changing materials 2 with the liquid crystals exclusive of the inside wall surfaces of the holes 1. Next, the structural change of the photostructure changing materials 2 adsorbed in the inside wall surfaces of the holes 1 is caused by irradiation with polarizing UV rays 23, by which the liquid crystal molecules 3 in the holes 1 are aligned to a specific direction. As a result, the refractive index difference between the high-polymer layers 18a which are the high polymer rich parts and the liquid crystal layers 19a which are the liquid crystal rich parts is increased.

17. 发明专利

JPH1114987A LIQUID CRYSTAL DISPLAY DEVICE AND ITS MANUFACTURE 失效
公开(公告)号：JPH1114987A
公开(公告)日：1999-01-22
申请号：JP16828197
申请日：1997-06-25
申请人： FUJI XEROX CO LTD
发明人： HIKIJI TAKETO , YAMAMOTO SHIGERU , SAGAWA SHIMIZU , SUZUKI SADAICHI , NINOMIYA MASANOBU
IPC分类号： G02B5/02 , G02F1/1335 , G02F1/13357
摘要： PROBLEM TO BE SOLVED: To easily actualize the liquid crystal display device which is equipped with a light diffusion layer with superior uniformity and reproducibility in a liquid crystal cell, superior in visibility, and adaptive to high resolution. SOLUTION: On an insulating transparent substrate 11, a transparent conductive film 12 formed of a compound containing indium oxides, a silicon compound film 13, and a high polymer compound film 14 are fold in order. On the other insulating substrate 15, a metal film 16 and a high polymer compound film 17 are formed in order. A liquid crystal mixture 19 is injected into between the high polymer compound films 14 and 17 to complete a liquid crystal cell 10 of a White Tailor type reflection type liquid crystal display device. When the silicon compound film 13 is deposited on the transparent conductive film 12 consisting of the compound containing indium oxides, the surface of the silicon compound film 13 becomes uneven and the silicon compound film 13 functions as a light diffusion layer.

18. 发明专利

JPH10232624A REFLECTION TYPE DISPLAY DEVICE 失效
公开(公告)号：JPH10232624A
公开(公告)日：1998-09-02
申请号：JP4967097
申请日：1997-02-18
申请人： FUJI XEROX CO LTD
发明人： SUZUKI SADAICHI , YAMAMOTO SHIGERU , HIKIJI TAKETO , SAGAWA SHIMIZU
IPC分类号： G02F1/1335 , G09F9/00 , G09F9/35
摘要： PROBLEM TO BE SOLVED: To surely expand visual angles by a simple method in the reflection type display of an interference reflection system. SOLUTION: Prisms 20 are arranged with respect to respective pixels P of the reflection type display element 10 of the interference reflection system so that bases of the prisms 20 are closely adhered to pixel surfaces of the reflection type display element 10 with adhesive 30. One side 21 of the prism 20 is made to be an incident plane from which an outer light is taken in and an other side 22 of the prism 20 is made to be a viewing plane from which the reflected light 3 from the pixel P is emitted. Moreover, light scattering bodies 27 are provided in the vicinity of the viewing plane 22. It is preferable to form a reflection preventing film on the incident plane 21.

19. 发明专利

JPH1062764A PRODUCTION OF LIGHT CONTROL ELEMENT 失效
公开(公告)号：JPH1062764A
公开(公告)日：1998-03-06
申请号：JP23983996
申请日：1996-08-22
申请人： FUJI XEROX CO LTD
发明人： YAMAMOTO SHIGERU , HIKIJI TAKETO , HIJI NAOKI
IPC分类号： G02F1/13 , G02F1/1333 , G02F1/1347
摘要： PROBLEM TO BE SOLVED: To form light controllable layers of a multilayered lamination structure not by sticking these layers but by directly laminating the layers and making the orientation directions of the liquid crystals of the respective layers independently controllable. SOLUTION: This process has a first applying stage for applying a first high-polymer layer dispersed with the liquid crystals, a first curing stage for curing this first high- polymer layer in the state of orienting the liquid crystals 14 dispersed in the first high-polymer layer in a first direction by impressing an external field on the first high-polymer layer applied by this first applying stage, a second applying stage for applying the second high-polymer layer dispersed with the liquid crystals on the first high-polymer layer 13 cured by this first curing stage and a second curing stage for curing the second high-polymer layer 16 in the state of orienting the liquid crystals 17 dispersed in the second high-polymer layer in the second direction different from the first direction by impressing the external field in the direction different from the direction at the time of the first curing stage on the second high-polymer layer applied by the second applying stage. The liquid crystals 14, 17 dispersed in the plural laminated high-polymer layers 13, 16 are respectively oriented in the desired directions.

20. 发明专利

JPH08106105A LIQUID CRYSTAL DISPLAY DEVICE 失效
公开(公告)号：JPH08106105A
公开(公告)日：1996-04-23
申请号：JP26445094
申请日：1994-10-05
申请人： FUJI XEROX CO LTD
发明人： KYOZUKA SHINYA , HIJI NAOKI , YAMAMOTO SHIGERU
IPC分类号： G02F1/1347 , G02F1/133 , G02F1/1333
摘要： PURPOSE: To provide a reflection type liquid crystal display device which has light diffusibility sufficient for preventing the mirror surface characteristic of reflection electrodes at the time of bright display and has improved display quality by lessening backward scattering at the time of dark display. CONSTITUTION: This liquid crystal display device is formed of a laminated structure of a first liquid crystal cell (light diffusion layer 25) and a second liquid crystal cell (GH liquid crystal layer 3) and is so constituted that these liquid crystal cells are controlled to a combination of either of a diffused state and transparent state or the transparent state and absorption state by impression of an AC power source 40 and, therefore, the bright display is made when the states of the first liquid crystal cell (light diffusion layer 25) and the second liquid crystal cell (GH liquid crystal layer 3) attain the diffused state and the transparent state, and the dark display is made when the liquid crystal cells attain the transparent state and the absorption state, by which the sufficient light diffusibility is obtd. at the time of the bright display in the first liquid crystal (light diffusion layer 25) and the backward scattering is lessened at the time of the dark display.

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