公开(公告)号：JPH04100567A

公开(公告)日：1992-04-02

申请号：JP21493090

申请日：1990-08-16

Applicant: CASIO COMPUTER CO LTD

Inventor： KITAGAWA KATSUMI ,  NAKAJIMA YASUSHI ,  TAKEI MANABU

IPC: B05D1/20

Abstract: PURPOSE:To use a shallow water tank and reduce a space above the water tank by a method wherein monomolecular films on the water surface are caused to adhere to the outer peripheral surface of a lower rotating drum so as to be picked up and then transferred onto the surface of a base plate via an upper rotating drum. CONSTITUTION:When liq. substances are dropped onto the water surface between a transfer barrier 13 in a water tank 11 and a lower rotating drum 14 therein and the lower rotating drum 14 and an upper rotating drum 15 are made to rotate, monomolecular films A are forced toward the lower rotating drum 14 by a transfer barrier 13 and adhered successively to the outer periphery thereof so as to be picked up and then transferred onto the outer periphery of the upper rotating drum 15. As a base plate is being carried on the upper rotating drum 15 synchronously with the rotation thereof, the monomolecular films A are transferred onto the underside of the base plate 10. In this way a shallow water tank 11 can be used. Also a small space above the water tank 11 suffices for this purpose.

公开(公告)号：JPH0497221A

公开(公告)日：1992-03-30

申请号：JP21184090

申请日：1990-08-10

Applicant: CASIO COMPUTER CO LTD

Inventor： NAKAJIMA YASUSHI

IPC: G02F1/1333 ,  G09F9/35

Abstract: PURPOSE:To reduce electric power consumption by nearly equaling the refractive indices of the high-polymer material and liquid crystal material of a composite material in the state of not impressing a voltage thereto and generating a difference in the refractive indices of the high-polymer material and the liquid crystal material in the state of impressing the voltage thereto. CONSTITUTION:The composite material 6 consists of the mixture composed of the high-polymer material 7 and the liquid crystal material 8 which is nearly equal in the refractive index in the state of not impressing the voltage between electrodes 3 and 4 facing each other to the refractive index of the high-polymer material. A photosensitive resin, such as, for example, UV curing resin, is used as the high-polymer material 7 in this case and the liquid crystal compsn. having the large refractive index anisotropy DELTAn and the refractive index of the bulk nearly equal to the refractive index of the high-polymer material 7 is used as the liquid crystal material 8. A liquid crystal compd. of, for example, a cyano biphenyl system, is used for this liquid crystal compsn. The optical element which allows the transmission of light when not impressed with the voltage and can scatter the light when impressed with the voltage is obtd. in this way.

公开(公告)号：JP2001091962A

公开(公告)日：2001-04-06

申请号：JP27033999

申请日：1999-09-24

Applicant: CASIO COMPUTER CO LTD

Inventor： NAKAJIMA YASUSHI

IPC: G02F1/137 ,  G02F1/1337 ,  G02F1/1343 ,  G02F1/136 ,  G02F1/1368 ,  G02F1/139

Abstract: PROBLEM TO BE SOLVED: To provide an in-plane switching mode liquid crystal display element which performs display with a lateral electric field and attains sufficiently high resolution and an aperture ratio by controlling light transmissivity over a region corresponding to a space between segment electrodes and common electrodes and a region corresponding to the electrodes. SOLUTION: A liquid crystal material having negative dielectric anisotropy is used. In the vicinity of a substrate provided with the segment electrodes and common electrodes 3, 4, liquid crystal molecules 20 are oriented so as to have the long molecular axes 20a nearly aligned in the direction of the lateral electric field E generated when driving voltage is applied between the segment electrodes and common electrodes 3, 4. By applying the lateral electric field E, the orientation direction of the long molecular axes 20a of the liquid crystal molecules 20 is made to change into a direction which crosses the direction of the electric field.

公开(公告)号：JP2000010074A

公开(公告)日：2000-01-14

申请号：JP18990298

申请日：1998-06-19

Applicant: CASIO COMPUTER CO LTD

Inventor： NAKAJIMA YASUSHI

IPC: G02F1/133 ,  G09G3/36

Abstract: PROBLEM TO BE SOLVED: To prevent the fixation of a reverse twist oriented fault of liquid crystal and to make an excellent display with high surface pressure resistance possible by providing a period supplying a data voltage to respective drain lines and a period supplying a voltage of a potential equal to a common electrode in every scan field. SOLUTION: A liquid crystal panel is provided with a common voltage generation circuit, a drain voltage (data signal) generation circuit, a gate voltage (scan signal) generation circuit and a control circuit, and the control circuit controls the respective circuits so as to become a common signal Vcom, a drain signal Dn (case of black display) and gate signals gate gate 1 - gate 220. When such a liquid crystal display device is driven at 60 Hz, the scan time of the gate signals gate 1-gate 220 for every field becomes 13.93 m sec, and an excess period T=2.74 m sec of a second half of every field is the period not contributing to a display. A reset voltage is supplied to respective drain lines 4 in the period T.

公开(公告)号：JPH10186400A

公开(公告)日：1998-07-14

申请号：JP34370496

申请日：1996-12-24

Applicant: CASIO COMPUTER CO LTD

Inventor： NAKAJIMA YASUSHI

IPC: G02F1/1337 ,  G02F1/136 ,  G02F1/1368

Abstract: PROBLEM TO BE SOLVED: To display a picture of high quality, in which a defect due to a discrimination is almost not present in spite of being a liquid crystal display element in which an auxiliary capacitance is formed by opposing the electrode for auxiliary capacitance to edge parts of the pixel electrode by suppressing the generation of the discrimination line due to the effect of an electric field to be generated between a pixel electrode and an electrode for auxiliary capacitance although. SOLUTION: The generation of the discrimination line due to the effect of a transverse electric field is suppressed by providing an electrode for auxiliary capacitance 13 by avoiding prescribed areas in edge parts to be the upstream side in the orientation processing direction (a) of an oriented film being on the electrode 13 when the areas are seen from the center of a pixel electrode 3 in among peripheral parts of the pixel electrode 3 and making most of a traverse electric field to be generated in-between the edge parts of the pixel electrode 3 and the outer peripheral part of the electrode for auxiliary capacitance 13 the electric field of a direction orienting liquid crystal molecules in a direction, which is not different so much from the orientation direction by the oriented film.

公开(公告)号：JPH09311314A

公开(公告)日：1997-12-02

申请号：JP12847796

申请日：1996-05-23

Applicant: CASIO COMPUTER CO LTD

Inventor： NAKAJIMA YASUSHI

IPC: G02F1/1337 ,  G02F1/133 ,  G02F1/1343

Abstract: PROBLEM TO BE SOLVED: To form a high quality picture in which a display defect due to a discrimination is not present by providing an electric field generation suppressing film covering an area ranging over from above the edge part of the pixel electrode of the downstream side of the orientation processing direction of an oriented film to above a signal line in the inner surface of the substrate of one side and providing the oriented film on the film. SOLUTION: An electric field generation suppressing film 30 covering the area ranging over from above the edge part of the pixel electrode 3 of the (a) side of the orientation processing direction of an oriented film 15 provided on a rear side substrate 1 among pixel electrodes of both sides of a signal line 11 to above the signal line 11 is provided in the inner surface of the rear side of a substrate 1 and the oriented film 15 is provided on the film. For example, the film 30 is formed so as to cover the whole width of the signal 11. When this area is covered with the film 30 in such a manner, an electric field of a direction orienting liquid crystal moleculars to a direction reverse to the orientation direction of the oriented film 15 among traverse electric fields to be generated in between the signal line 11 and the edge part of the pixel electrode 3, in short, the traverse electric field of the direction generating the discrimination is almost extinguished.

公开(公告)号：JPH0943638A

公开(公告)日：1997-02-14

申请号：JP21395795

申请日：1995-08-01

Applicant: CASIO COMPUTER CO LTD

Inventor： NAKAJIMA YASUSHI ,  MANNOUJI TOSHIHIRO ,  AWATA HIROKO

IPC: G02F1/1333 ,  G02F1/136 ,  G02F1/1368

Abstract: PROBLEM TO BE SOLVED: To provide a liquid crystal element which is hardly affected by the parasitic capacitance of a TFT and has a wide angle of visibility. SOLUTION: A pixel electrode 22 is formed on a TFT substrate 11, a lower layer electrode 31 and an additional capacitance electrode 38 are formed on a counter substrate 12, a color filter 33, etc., are formed thereon and upper layer electrodes 35a, 35b are formed on a color filter 33, etc. The upper electrode 35a is connected to the lower electrode 31. Liquid crystal 13 is enclosed between the TUFT substrate 11 and the counter substrate 12 to constitute the liquid crystal display element. The driving voltage applied between the lower layer electrode 31 and the pixel electrode 22 is applied to the liquid crystal 13 as it is in a region where the upper layer electrode 35a is arranged, and is lowered by a color filter 33 and applied to the liquid crystal 13 in a region where the upper layer 35b is arranged. Further, the additional capacitance is individually connected to the liquid crystal capacitance in both regions. Consequently, the lowering of voltage of the pixel electrode 22 due to the parasitic capacitance of the TFT 21 is reduced.

公开(公告)号：JPH0915583A

公开(公告)日：1997-01-17

申请号：JP18657295

申请日：1995-06-30

Applicant: CASIO COMPUTER CO LTD

Inventor： NAKAJIMA YASUSHI

IPC: G02F1/1333 ,  G02F1/133 ,  G02F1/1335 ,  G09F9/00 ,  G09F9/30

Abstract: PURPOSE: To provide a liquid crystal display element whose visual field angle is uniform and wide. CONSTITUTION: On the counter substrate 12 side of a liquid crystal display element, a lower layer electrode 31 and an upper layer electrode 35 arranged on it are formed as an electrode to be confronted with a pixel electrode 22. In each pixel, an area where a driving voltage is impressed as it is by the upper layer electrode 35 and an area where a lowered by a color filter 33 is impressed from the lower layer electrode 31 are formed and the visual field angle of the pixel is widened. Since permittivity lowering agent is incorporated into color filters 33G, 33B of respective R, B colors, voltages lowered in respective filters are larger than the voltage lowered in the color filter 33R. Consequently, the difference between voltage to be impressed on liquid crystal of two areas in an R pixel becomes larger than the difference between voltage to be impressed on liquid crystal of two areas in G, B pixels and visual field angle improving effects are made almost equal in respective R, G, B colors and visual field angles for every pixel become uniform and wide.

公开(公告)号：JPH08171091A

公开(公告)日：1996-07-02

申请号：JP31346794

申请日：1994-12-16

Applicant: CASIO COMPUTER CO LTD

Inventor： IWASAKI MAKOTO ,  NAKAJIMA YASUSHI

IPC: G02F1/1337

Abstract: PURPOSE: To provide a liquid crystal display element with which the observation of its display with a good contrast is possible and the range of visual field angles is widened. CONSTITUTION: This liquid crystal display element is formed by holding liquid crystals between a pair of substrates 1 and 2 formed with electrodes 3, 4 and subjecting the molecules of these liquid crystals to twist orientation. The surfaces of these substrates 1, 2 on which the electrodes are formed are provided with an oriented layer 10a of a first layer having a prescribed orientation characteristic to the liquid crystal molecules and oriented layers 10b of a second layers which exist in interspersion nearly uniformly on this oriented layer 10a of the first layer and have the orientation characteristics different from the orientation characteristic of the oriented layer 10a of the first layer.

公开(公告)号：JPH07311381A

公开(公告)日：1995-11-28

申请号：JP12584994

申请日：1994-05-17

Applicant: CASIO COMPUTER CO LTD

Inventor： MORI MIWAKO ,  NAKAJIMA YASUSHI

IPC: G02B6/00 ,  F21V8/00 ,  G02F1/1333 ,  G02F1/1335 ,  G02F1/13357

Abstract: PURPOSE:To change the luminance of the light emitting surface of a backlight unit or the display surface of a display device without changing the luminance of a light source. CONSTITUTION:This backlight unit 12 is provided with a polymer dispersion type liquid crystal panel 16 on the upper surface of a light emitting device 15. The panel 16 is constituted by sealing substance including liquid crystal 27 in polymer 26 between two transparent substrates 21 and 22 having transference electrodes 23 and 24 on their opposed surfaces. Therefore, by changing voltage impressed between the electrodes 23 and 24, the scattering intensity of light is changed, and a light transmitted state is changed. As a result, not only the luminance of the light emitting surface of the unit 12 but also that of the display surface of the display device are changed without changing the luminance of the light source 19.