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31. 发明专利

JPH089395A COLOR IMAGE PICKUP DEVICE 失效
公开(公告)号：JPH089395A
公开(公告)日：1996-01-12
申请号：JP14174494
申请日：1994-06-23
申请人： CANON KK
发明人： IBA JUN , SHIRAISHI AKIHIKO
IPC分类号： H04N9/07
摘要： PURPOSE:To make luminance signals close to the signals of an NTSC system and to improve color reproducibility by providing a color filter for which the sum of the spectroscopic sensitivity of all the picture elements becomes approximately the ratio of R:G:B=2:3:1 and a signal processing circuit for which the component ratio of the luminance signal becomes approximately R:G:B=2:3:1. CONSTITUTION:While (n) is defined as a positive integer, the scanning signals of R+Cy, G+Ye, R+Cy and G-Ye are obtained at the time of the nH scanning of a first field. When a yellow light transmission filter Ye and a cyan light transmission filter Cy are respectively expressed by R+G and G+B, nH scanning signal components are defined as R+G+B, R+2G, R+G+B and R+2G and the luminance signals proportional to 2R+3G+B are obtained through a low-pass filter. Also, chrominance signals proportional to B-G are obtained through a band-pass filter. That is, the scanning signals of G+Cy, R+Ye, G+Cy and R+Ye are obtained at the time of the (n+1)H scanning of the first field and G+Cy, R+Ye, G+Cy and R+Ye are obtained at the time of the n'H scanning of a second field.

32. 发明专利

JP2003223857A ELECTRON BEAM EQUIPMENT AND IMAGE FORMING SYSTEM 审中-公开
公开(公告)号：JP2003223857A
公开(公告)日：2003-08-08
申请号：JP2002023102
申请日：2002-01-31
申请人： CANON KK
发明人： IBA JUN , AZUMA HISAFUMI , HAYAMA AKIRA , FUSHIMI MASAHIRO
IPC分类号： H01J29/88 , H01J29/87 , H01J31/12
摘要： PROBLEM TO BE SOLVED: To provide an electron beam equipment and an image forming system which are equipped with superior visual quality being able to correct beam gap and which have a spacer with proper yield, without forming a spacer electrode by a new process. SOLUTION: The spacer 1020 composes that irregularity is formed on an exposure surface standing between an electron source and an electron beam irradiated member and that an antistatic film 11 is covered on this irregularity, connects with the electron source and is provided with a site which is flatter than the irregularity in areas near the electron source or the electron beam irradiated member. This antistatic film 11 comprises that its sheet resistance value of a part of a irregular shape, having a predetermined angle with respect to a normal line which is vertical to a parallel face with the electron source, is set higher than that of the other parts. COPYRIGHT: (C)2003,JPO

33. 发明专利

JP2001133753A METHOD OF DRIVING LIQUID CRYSTAL ELEMENT 失效
公开(公告)号：JP2001133753A
公开(公告)日：2001-05-18
申请号：JP2000252538
申请日：2000-08-23
申请人： CANON KK
发明人： IBA JUN
IPC分类号： G02F1/133 , G09G3/20 , G09G3/36
摘要： PROBLEM TO BE SOLVED: To provide a method of driving liquid crystal element with improved moving picture quality without generating lowering of brightness and contrast and display unevenness in a panel due to wiring delay. SOLUTION: In the active matrix liquid crystal element one frame is divided into n-number of subframes. Extending from the first to the (n-1)-th subframe with short periods an intermediate display between the previous and the present frames is carried out. The real display is carried out in the n-th subframe corresponding to the display data.

34. 发明专利

JP2000111876A LIQUID CRYSTAL ELEMENT 失效
公开(公告)号：JP2000111876A
公开(公告)日：2000-04-21
申请号：JP28363298
申请日：1998-10-06
申请人： CANON KK
发明人： IBA JUN , TOKUNAGA HIROYUKI
IPC分类号： G09G3/36 , G02F1/133
摘要： PROBLEM TO BE SOLVED: To drive self-polarizing liquid crystal fast by making the quantity of electric charges held in an active element and liquid crystal at the end of a selection period larger than the electric charge quantity obtained by subtracting the quantity of electric charges consumed for switching in the selection period of the active element from the quantity of electric charges needed to switch all liquid crystal molecules of a pixel. SOLUTION: At an arbitrary pixel, the active element is held low in impedance in a 1st period to apply electric charges to the liquid crystal of the pixel. In a 2nd period, the active element is held high in impedance and the electric charges are held in the liquid crystal and active element to place the liquid crystal in a specific transmissivity state. Then (C1c+Cac)×Voff-(2Ps.S-Qon)>0 is met, where C1c(F) is the capacitance of the liquid crystal, Voff(V) the voltage applied to the liquid crystal at the start of the 2nd period, Qon(C) the quantity of electric charges consumed by liquid crystal molecules to switch in the 1st period, Ps(C/m2) the self-polarization of the liquid crystal, and S(m2) the area of the pixel.

35. 发明专利

JPH11311770A METHOD FOR DRIVING LIQUID CRYSTAL ELEMENT AND LIQUID CRYSTAL DISPLAY DEVICE USING THE LIQUID CRYSTAL ELEMENT 失效
公开(公告)号：JPH11311770A
公开(公告)日：1999-11-09
申请号：JP12021598
申请日：1998-04-30
申请人： CANON KK
发明人： IBA JUN , ENOMOTO TAKASHI
IPC分类号： G02F1/133 , G09G3/36
摘要： PROBLEM TO BE SOLVED: To supply sufficient charge amount even in the case of high speed driving, to realize accurate gradation display and high transmissivity and to improve display characteristic by supplying necessary charge to liquid crystal over a selection period divided into (n) by making a non-selection period intervene in between. SOLUTION: The non-selection periods D1 and D2 are made to intervene in the periods H1 to H3 obtained by dividing the scanning selection period of a scanning signal conductor G1 into three, for example. The voltage waveform (a) of a scanning signal is impressed on the scanning signal conductor G1 and the voltage waveform (b) of an information signal is impressed on an information signal conductor S1 , then voltage waveform (c) is impressed on the liquid crystal of a pixel on the intersection of two waveforms. The voltage is impressed on the liquid crystal in the period H1 and drops by a current associated with the switching of the liquid crystal in the period D1 . The charge is supplied further in the next period H2 , and the voltage to be impressed gets higher and drops with the switching, but it attains the specified voltage, because the necessary charge amount is supplied by applying the charge in the period H3 . The high transmissivity corresponding to the voltage is obtained.

36. 发明专利

JPH11142816A LIQUID CRYSTAL DISPLAY DEVICE 失效
公开(公告)号：JPH11142816A
公开(公告)日：1999-05-28
申请号：JP32393597
申请日：1997-11-11
申请人： CANON KK
发明人： IBA JUN , TSUBOYAMA AKIRA , INABA YUTAKA , KATAKURA KAZUNORI
IPC分类号： G02F1/133 , G09G3/36
摘要： PROBLEM TO BE SOLVED: To attain high speed drive for polarity driving liquid crytal(LC) represented by ferroelectric liquid crystal and to attain a large screen without reducing picture quality due to the drop of frame frequency. SOLUTION: A liquid crystal display device(LCD) is provided with polarity drivable LC and scanning electrode and information electrode groups arrayed like a matrix and allowed to drive respective pixels by impressing scanning signals and information signals from these electrode groups. In the LCD, a means for driving respective pixels simultaneously selects M scanning electrodes when M is an integer >2, at least two scanning selection signals which are not allowed to coincide with each other even when their phases are shifted within a selection period are impressed to the M scanning electrodes and one of at least 2M information singals of which DC components are compensated in the selection period is selected so that the integration value of a voltage pulse of one polarity out of synthetic voltage between the scanning signals to be impressed to pixels on the scanning electrodes selected within the selection period and the information signal is larger than the integration value of a voltage pulse of the other polarity and then impressed to the information electrodes.

37. 发明专利

JPH11119196A LIQUID CRYSTAL DEVICE 失效
公开(公告)号：JPH11119196A
公开(公告)日：1999-04-30
申请号：JP22245898
申请日：1998-07-23
申请人： CANON KK
发明人： IBA JUN , TSUBOYAMA AKIRA , INABA YUTAKA
IPC分类号： G02F1/133 , G09G3/36
摘要： PROBLEM TO BE SOLVED: To perform high-speed driving and to enlarge a screen without inviting the decline of image quality due to the decline of a frame frequency by impressing scanning signals and information signals for making the integrated value of the write pulses of a polarity to be written in a pixel larger than the integrated value of the pulses of the polarity not to be written in the pixel. SOLUTION: M lines of scanning electrodes are simultaneously selected, and among the write pulses for deciding the state of the pixel impressed in the selection period of the scanning signals, the integrated value of the write pulses provided with the polarity for writing the pixel is made larger than the integrated value of the write pulses provided with the polarity for not writing the picture element. In this case, for a matrix, a phase for generating selection pulses is defined as 1, the phase for not generating the selection pulses is defined as 0, a selection pulse voltage is defined as Vsc and a reference voltage is defined as Vc. Then, in the example of 2-line simultaneous scanning for instance, when white display is defined as 1 and black display is defined as 0, the display patterns of (11), (00), (10) and (01) and the information signals corresponding to them are considered.

38. 发明专利

JPH1184339A DISPLAY DEVICE 失效
公开(公告)号：JPH1184339A
公开(公告)日：1999-03-26
申请号：JP24158297
申请日：1997-09-05
申请人： CANON KK
发明人： KATAKURA KAZUNORI , ONO TOMOYUKI , IBA JUN , TSUBOYAMA AKIRA
IPC分类号： G02F1/133 , G09G3/36
摘要： PROBLEM TO BE SOLVED: To provide a display device capable of compensating a minute DC component which is caused by the variation of constituting elements, parts or the like and is superposed on the whole of matrix electrode parts. SOLUTION: All of plural driving voltages V1-V4 are uniformly changed according to temp. information from a temp. detecting means 108 by a first voltage control means 8 provided in a driving means 105 driving optical elements. Moreover, second voltage control means 9, 10 changing the prescribed driving voltage V4 among the plural driving voltages V1-V4 in an amount smaller than the amount of change of the voltage in which the plural voltages are changed uniformly, are provided in the driving means 105 and the prescribed driving voltage V4 is minutely changed by the second voltage control means 9, 10 in accordance with off-set information from an off-set means 3. Moreover, the prescribed driving voltage V4 is made so as to be applied intermittently and with a constant time ratio without depending on the display information as well by forming the pulses of an information signal with this prescribed driving voltage V4.

39. 发明专利

JPH10339864A LIQUID CRYSTAL ELEMENT DRIVING METHOD AND LIQUID CRYSTAL DEVICE 失效
公开(公告)号：JPH10339864A
公开(公告)日：1998-12-22
申请号：JP9877798
申请日：1998-04-10
申请人： CANON KK
发明人： KATAKURA KAZUNORI , IBA JUN , TSUBOYAMA AKIRA , OKADA SHINJIRO
IPC分类号： G02F1/133 , G09G3/36
摘要： PROBLEM TO BE SOLVED: To obtain satisfactory picture quality by making write pulses to be impressed on pixels into pulses of a waveform in which periods of low voltage value are provided before and after across the period of a high voltage at the time of a high temp. to make a driving margin larger with a low power consumption regardless of the temps. SOLUTION: The temp. of a display part 101 is inputted to a temp. detecting circuit 109 via a temp. detecting element 108 and a driving control circuit 105 transmits waveform data to a scanning signal impression circuit 102 and an information signal impression circuit 103 through a scanning signal control circuit 104 and an information signal control circuit 106 based on the data. Specifically, temp. regions of two or more which do not overlap are set as to temps. of the display part 101. Then, when the temp. of the area being a higher temp. side is detected, data are transmitted to the scanning signal impressing circuit 102 and the information signal impressing circuit 103 so that the write pulse to be impressed on the pixels have a high voltage only in the central par and low voltage parts in the both sides of the central part and the circuits perform drivings with the waveform.

40. 发明专利

JPH10268294A LIQUID CRYSTAL DEVICE 失效
公开(公告)号：JPH10268294A
公开(公告)日：1998-10-09
申请号：JP7679097
申请日：1997-03-28
申请人： CANON KK
发明人： IBA JUN , TSUBOYAMA AKIRA
IPC分类号： G02B5/30 , G02F1/1335
摘要： PROBLEM TO BE SOLVED: To improve field angle characteristics of a contrast by using a polariz ing plate having improved field angle characteristics in a polarized state by equipping the polarizing plate with a polarizer whose refractive index in its transmission axis direction exceeds a specific value. SOLUTION: Transparent protection films 3a and 3b are adhered to a polarizing element which has a high refractive index with adhesive layers 2a and 2b. The polarizer 1 in use has the high refractive index exceeding 1.6. The refractive index L is preferably >=1.7 and more preferably >=1.75, and a proper choice is made according to obtained field angle characteristics. As the polarizer 1, a film etc., is used which is obtained by processing a film formed of hydrophilic macromolecules like a polyvinyl alcohol, partially formalized polyvinyl alcohol, or partially saponified ethylene vinyl acetate copolymer film with iodine and/or dichroic dye and drawing it, or processing a plastic film of vinyl chloride and orienting polyene.

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