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1. 发明专利

JP2002318395A DISPLAY DEVICE 失效
公开(公告)号：JP2002318395A
公开(公告)日：2002-10-31
申请号：JP2001124867
申请日：2001-04-23
申请人： CANON KK
发明人： IBA JUN , YAGYU MINETO
IPC分类号： G02F1/139 , G02F1/133 , G02F1/13357 , G02F1/141 , G09F9/00 , G09F9/30 , G09F9/35 , G09G3/20 , G09G3/34 , G09G3/36
摘要： PROBLEM TO BE SOLVED: To prevent an opening ratio from being lowered. SOLUTION: In this display device, data for a red picture are held on a capacitor 8R via TFT(thin film transistors) 4R, 5R, data for a green picture are held on a capacitor 8G via TFT(thin film transistors) 4G, 5G and data for a blue picture are held on a capacitor 8B via TFT(thin film transistors) 4B, 5B. Then, data held on three capacitors 8R, 8G, 8B are transferred to a pixel electrode 22b by making the TFT 6R, 6G, 6B to be turned on successively. Such a drive is performed on the whole of a display panel, but a field sequential drive is performed respectively by the irradiation of red light when data for the red picture are transferred to pixel electrodes 22b of entire pixels, of green light when data for the green picture are transferred to pixel electrodes 22b of entire pixels and of blue light when data for the blue picture are transferred to pixel electrodes 22b of entire pixels. Since the number of pieces of TFT and capacitors per one pixel is small in this device, the opening ratio is made high.

2. 发明专利

JPH10221684A LIQUID CRYSTAL DEVICE 失效
公开(公告)号：JPH10221684A
公开(公告)日：1998-08-21
申请号：JP2112297
申请日：1997-02-04
申请人： CANON KK
发明人： IBA JUN , TSUBOYAMA AKIRA , IWASAKI MANABU
IPC分类号： G02F1/1335 , G02F1/13357
摘要： PROBLEM TO BE SOLVED: To obtain a liquid crystal device by which a design free degree is high, cost is inexpensive and a sufficient optical characteristic and durability are realized by permitting the polarization degree of a polarizing plate which is arranged at a light emitting side to be higher than that of the polarizing plate which is arranged at an incident side. SOLUTION: The polarizing plate 1 at the light emitting side, the polarizing plate 2 at the incident side, a liquid crystal cell 10 and a back light 3 such as a fluorescent tube, etc., are provided. The liquid crystal cell 10 is constituted by pinching liquid crystal between a pair of substrates 11a and 11b consisting of glass, etc., which is provided with a transparent electrode and an orienting film, etc. The polarizing plates 1 and 2 used for the liquid crystal device are obtained by adhering a protecting film to an polarizer. Then, the polarization degree of the polarizing plate 1 which is arranged at the light emitting side is higher than that of the polarizing plate 2 which is arranged at the incident side. When the liquid crystal cell which is provided with a characteristic for converting incident and straight polarized light into the oblong polarized light of straight polarized light or an almost straight line so as to execute emission is used as the liquid crystal cell, an optical characteristic which is synthetically superior concerning contrast and a transmissivity is realized.

3. 发明专利

JPH09325322A LIQUID CRYSTAL DEVICE 失效
公开(公告)号：JPH09325322A
公开(公告)日：1997-12-16
申请号：JP14047896
申请日：1996-06-03
申请人： CANON KK
发明人： IBA JUN , KATAKURA KAZUNORI
IPC分类号： G02F1/133 , G09G3/36
摘要： PROBLEM TO BE SOLVED: To provide the liquid crystal display device which can make a gradational display even when using liquid crystal having steep V-T characteristics. SOLUTION: While a scanning signal applying means 2 applies a scanning signal to a scanning electrode group X formed on a couple of opposite substrates in matrix and an information signal applying means 3 applies an information signal to an information electrode group Y, a characteristic varying means 10 varies voltage-transmissivity characteristics showing the relation between the composite waveform voltage of the scanning signal and information signal of the liquid crystal and its transmissivity. Further, this characteristic varying means 10 varies the voltage-transmissivity characteristics periodically and put the respective varied voltage-transmissivity characteristics together to vary the voltage-transmissivity characteristics of the liquid crystal which vary in transmissivity suddenly when the composite waveform voltage exceeds a specific value, thereby making gentle the variation in the transmissivity with the composite waveform voltage of the liquid crystal. Consequently, the gradational display can be made even when the liquid crystal having the steep V-T characteristics is used.

4. 发明专利

JPH08146350A VIDEO DISPLAY DEVICE 失效
公开(公告)号：JPH08146350A
公开(公告)日：1996-06-07
申请号：JP30701694
申请日：1994-11-15
申请人： CANON KK
发明人： IBA JUN , SUDO TOSHIYUKI
IPC分类号： G02B27/02 , G02B27/22 , H04N5/64 , H04N13/04
摘要： PURPOSE: To easily discriminate the deviation of observer's eyeball from an optimum pupil area by installing an optical member whose transmission optical characteristic in a central area is made differ from that in a peripheral part near a diaphragm. CONSTITUTION: A video displayed on a display screen 11a for a liquid crystal display(LCD) panel 11 is observed by the observer's eye positioned at an eye point 17 through a field lens 12, a relay optical system 13 and an eyepiece optical system 16. A filter 14 is attachably/detachably mounted adjacent to the diaphragm 10 of the relay optical system 13. The members 30 to 32 of the filter 14 are disk-like and doughnut-like color filters having different phases respectively, for example, transparent, green and red filters are arranged from the center in this order. In the case of inserting the filter 14 in the optical path, if the observer's eyeball 18 is adjusted to the position deviated from the optimum pupil position E in the eye point 17, the video displayed on the LCD panel is colored.

5. 发明专利

JPH0823541A COLOR IMAGE PICKUP DEVICE 失效
公开(公告)号：JPH0823541A
公开(公告)日：1996-01-23
申请号：JP15868194
申请日：1994-07-11
申请人： CANON KK
发明人： IBA JUN , SHIRAISHI AKIHIKO
IPC分类号： H04N9/07
摘要： PURPOSE:To reproduce a correct color tone with less moire and to suppress the generation of a pseudo contour in a color image pickup device such as a video camera or the like. CONSTITUTION:An image pickup sensor 101 where an object image is formed is provided with a color filter array 100 provided with the color filter array of Bayer system, the chrominance signals of R (red), G1 (green), G2 (green) and B (blue) from the image pickup sensor 101 are passed through thinning filters 106-109 and made simultaneous, the difference signals of R signals and G1 signals and G2 signals and B signals are generated by adders 129 and 130 and the difference signals of the R signals and G2 signals and the G1 signals and the B signals are generated by the adders 139 and 140. Then, the respective difference signals for which a difference with the R signals is obtained are inputted to a mixing circuit 150, the respective difference signals for which the difference with the B signals is obtained are inputted to the mixing circuit 151 and R-G and B-G signals are generated by multiplying a coefficiet corresponding to the size of the difference signals and the respective difference signals. After white balance adjustment is performed in a white balance part 145, color difference signals R-Y and B-Y are generated by a color difference matrix processing part 113.

6. 发明专利

JP2000122035A DISPLAY DEVICE 失效
公开(公告)号：JP2000122035A
公开(公告)日：2000-04-28
申请号：JP29592198
申请日：1998-10-16
申请人： CANON KK
发明人： KATAKURA KAZUNORI , ONO TOMOYUKI , IBA JUN
IPC分类号： G09F9/35 , G02F1/133
摘要： PROBLEM TO BE SOLVED: To correct fine DC components which are generated from variations, etc., of component elements and parts and are superposed over the entire part of a matrix electrode section. SOLUTION: The optical modulation material disposed between a pair of substrates arranged to face each other is driven by impressing information signals and scanning signals to the matrix electrodes formed on these substrates by a driving means 105. One or more pulses having the DC component are impressed thereto within the electrical relaxation period of the optical modulation material via a scanning signal control circuit 102 and an information signal control circuit 103 by a pulse impressing means 4.

7. 发明专利

JP2000111879A LIQUID CRYSTAL DEVICE 失效
公开(公告)号：JP2000111879A
公开(公告)日：2000-04-21
申请号：JP28712098
申请日：1998-10-08
申请人： CANON KK
发明人： IBA JUN
IPC分类号： G09F9/35 , G02F1/133
摘要： PROBLEM TO BE SOLVED: To provide a liquid crystal device in which the number of wring is less, a frame frequency does not fall, a pixel structure is simple, and also image quality is little degraded. SOLUTION: Pixels 94 are divided into n-pieces (n is an integer of 3 or larger) of sub-pixels of which each differs in size and can also be selected and driven simultaneously. And, a shift of the center of gravity due to gradation display is made small by locating pixel electrodes 25, 39 composing the largest sub-pixel of the divided sub-pixels at the farthest position from the center of gravity 28 of the pixels, making the center of gravity 35 of the largest sub-pixel coincide with the center of gravity 28 of the pixels, and further, making each center of gravity of the pixel electrodes 26, 27 composing the remaining sub-pixels except the largest sub-pixel not coincide with the center of gravity 28 of the pixels but making the center of gravity 36 of the sub-pixel group formed of all the remaining sub-pixels with the center of gravity 28 of the pixels.

8. 发明专利

JPH10115834A LIQUID CRYSTAL DEVICE 失效
公开(公告)号：JPH10115834A
公开(公告)日：1998-05-06
申请号：JP27117896
申请日：1996-10-14
申请人： CANON KK
发明人： TSUBOYAMA AKIRA , KATAKURA KAZUNORI , IBA JUN , IWASAKI MANABU , MIZUTANI HIDEMASA
IPC分类号： G02F1/1343 , G02F1/133 , G02F1/1345 , G09F9/35
摘要： PROBLEM TO BE SOLVED: To provide a liquid crysatal device capable of obtaining high picture quality at high productivity. SOLUTION: Scan electrodes S1-S1024 are divided, and division scan electrodes are formed, and plural division pixels constituting pixels are formed on intersected parts between these division scan electrodes and information electrodes I1-I1280, and a scan signal is applied to respective division scan electrodes by scan signal application means S1a, S1-S1024a, S1024b of signal application parts DS1-DS1024. Then, by alternately arranging these signal application parts DS1-DS1024 on both sides of plural scan electrodes S1-S1024, a temp. distribution is reduced, and display unevenness is made hardly to occur. Further, when the scan signal is applied to two division scan electrodes simultaneously according to a display mode, by arranging simultaneously selected two signal application parts DS1-DS1024 on the sides different from each other of the scan electrodes S1-S1024, the temp. distribution is reduced to prevent the occurrence of display unevenness.

9. 发明专利

JPH1010529A LIQUID CRYSTAL DISPLAY DEVICE AND INFORMATION TRANSFER DEVICE WITH IT 失效
公开(公告)号：JPH1010529A
公开(公告)日：1998-01-16
申请号：JP16487296
申请日：1996-06-25
申请人： CANON KK
发明人： IWASAKI MANABU , TSUBOYAMA AKIRA , KATAKURA KAZUNORI , IBA JUN
IPC分类号： G02F1/1335 , G02F1/13357
摘要： PROBLEM TO BE SOLVED: To obtain an excellent white display color. SOLUTION: When chromaticity of a required white display of a liquid crystal display device 1 are defined x(FL), y(FL), the chromaticity of a turn-on color of a back light device 3 are x(BL), y(BL), the chromaticity of transmission light of a liquid crystal element 2 when the liquid crystal element 2 is lighted from a rear side by the back light device 3 with equal energy white light are x(LC), y(LC), when the emission characteristics of fluorescent tubes 14a, 14b, 14c, 14d of the back light device 3 are adjusted so as to be satisfied simultaneously with the relations: (x(FL)-x(LC)).(x(BL)-x(FL))>0 and (y(FL)-y(LC)).(y(BL)-y(FL))>0, the excellent white display color is obtained.

10. 发明专利

JPH1010495A LIQUID CRYSTAL DEVICE 失效
公开(公告)号：JPH1010495A
公开(公告)日：1998-01-16
申请号：JP16633296
申请日：1996-06-26
申请人： CANON KK
发明人： IBA JUN , KATAKURA KAZUNORI , OKADA SHINJIRO
IPC分类号： G02F1/133 , G09G3/36
摘要： PROBLEM TO BE SOLVED: To provide a liquid crystal device which can widen the driving margin even when liquid crystals with asymmetrical threshold characteristic are used. SOLUTION: An DC voltage impressing means 10 impresses a weak DC voltage component on an information signal to be impressed on a matrix of the information electrode group 3a formed on a pair of opposing substrates. An impressed voltage adjusting means 12 controls the DC voltage impressing means 10 to adjust the magnitude of the DC voltage component. Thereby the magnitude of the synthesized signal of the scan signal and the information signal is adjusted and the asymmetricity of switching of the liquid crystal is resolved.

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