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公开(公告)号：DE69212311T2
公开(公告)日：1997-01-23
申请号：DE69212311
申请日：1992-04-29
Applicant: IBM
Inventor： YAMAGUCHI HIDEFUMI
Abstract: A method and an apparatus for driving a liquid crystal display, in which flicker and cross talk are removed for arbitrary display patterns. The liquid crystal display has a plurality of scan lines, a plurality of data lines, and a plurality of pixels arranged in a matrix at the intersections of the scan and the data lines. The polarity of data signals outputted to the data lines is inverted for each occurrence of a pixel to be placed into a predetermined state. The predetermined state may be a dark state or a bright state of a binary display, or one of several levels of a display having more than two gray scale levels.
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公开(公告)号：CA2046357C
公开(公告)日：1994-07-05
申请号：CA2046357
申请日：1991-07-05
Applicant: IBM
Inventor： KIMURA SHINICHI , SUZUKI HIROSHI , YAMAGUCHI HIDEFUMI
Abstract: LIQUID CRYSTAL DISPLAY Without the need of a data signal of high frequency such as a horizontal scanning frequency, the polarity of data signal applied to one pixel can be inverted to the polarity of data signal applied to pixels horizontally and vertically adjacent to the one pixel so that a flicker cannot be recognized by an observer. A first data signal is applied to every other column conductor of a plurality of column conductors and a second data signal is applied to remaining column conductors. The polarity of the first data signal is inverted to that of the second data signal. In one mode of the invention, the pixels in the same row are connected to the same row, and the pixels in one column are alternately connected to one column conductor to which the first data signal is applied and to the other column conductor to which the second data signal is applied. The pixels in a column adjacent to the above one column are alternately connected to the above one and the other column conductors with one pixel being shifted in the column direction with respect to the pixels in the above one column. In another mode of the invention, the pixels in each row are alternately connected to adjacent two row conductors, and the pixels in each column are alternately connected to one column conductor to which the first data signal is applied and to the other column conductor to which the second data signal is applied. In both modes, the frequency of the first and second data signals can be made a flame frequency. If the number of row conductors are 550, the frequency of data signal is 550 times smaller than prior art.
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公开(公告)号：DE3363865D1
公开(公告)日：1986-07-10
申请号：DE3363865
申请日：1983-02-23
Applicant: IBM
Inventor： YAMAGUCHI HIDEFUMI
Abstract: A deflection distortion correcting circuit for CRT display with interlaced scanning is disclosed, which correct concurrently both linearity of vertical deflection and pairing of horizontal interlaced scanning lines which is caused by variation in anode voltage. This can be achieved simply and easily by combining an adder with a conventional cubic curve linearity correction circuit to introduce a pairing correcting component related to the variation in anode voltage into the cubic curve linearity correction.
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公开(公告)号：CA2065229C
公开(公告)日：1998-07-21
申请号：CA2065229
申请日：1992-04-08
Applicant: IBM
Inventor： YAMAGUCHI HIDEFUMI
Abstract: To provide a method and an apparatus for driving a liquid crystal display, by which flickers and cross talk can be removed even for any display pattern on the liquid crystal display. The liquid crystal display having a plurality of scan lines, a plurality of data lines and a plurality of pixels arranged in a matrix at the intersections of the scan and the data lines; wherein the polarity of data signals outputted to the data lines can be inverted for each occurrence of a pixel to be placed into a predetermined state.
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公开(公告)号：ES2090635T3
公开(公告)日：1996-10-16
申请号：ES92909311
申请日：1992-04-29
Applicant: IBM
Inventor： YAMAGUCHI HIDEFUMI
Abstract: A method and an apparatus for driving a liquid crystal display, in which flicker and cross talk are removed for arbitrary display patterns. The liquid crystal display has a plurality of scan lines, a plurality of data lines, and a plurality of pixels arranged in a matrix at the intersections of the scan and the data lines. The polarity of data signals outputted to the data lines is inverted for each occurrence of a pixel to be placed into a predetermined state. The predetermined state may be a dark state or a bright state of a binary display, or one of several levels of a display having more than two gray scale levels.
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Patent Agency Ranking
公开(公告)号：DE69212311D1
公开(公告)日：1996-08-22
申请号：DE69212311
申请日：1992-04-29
Applicant: IBM
Inventor： YAMAGUCHI HIDEFUMI
Abstract: A method and an apparatus for driving a liquid crystal display, in which flicker and cross talk are removed for arbitrary display patterns. The liquid crystal display has a plurality of scan lines, a plurality of data lines, and a plurality of pixels arranged in a matrix at the intersections of the scan and the data lines. The polarity of data signals outputted to the data lines is inverted for each occurrence of a pixel to be placed into a predetermined state. The predetermined state may be a dark state or a bright state of a binary display, or one of several levels of a display having more than two gray scale levels.
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公开(公告)号：DE69110361D1
公开(公告)日：1995-07-20
申请号：DE69110361
申请日：1991-07-01
Applicant: IBM
Inventor： KIMURA SHINICHI , SUZUKI HIROSHI , YAMAGUCHI HIDEFUMI
Abstract: A liquid crystal display comprises a first set of the column conductors (D1 to Dm-1) and a second set of the column conductors (D2 to Dm-2). The first set of column conductors (D1 to Dm-1) are interposed between the second set of column conductors (D2 to Dm-2). The display further includes a plurality of thin film transistors (4) arranged in a matrix of rows and columns. Each transistor has a gate electrode connected to a row conductor, and a conduction channel connected at one end to a column conductor and at the other end to a pixel electrode (5). In any one column of transistors (4), alternate transistors (4a,4b) have their conduction channels connected to different ones of the sets of column conductors.
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公开(公告)号：CA2046358C
公开(公告)日：1994-10-25
申请号：CA2046358
申请日：1991-07-05
Applicant: IBM
Inventor： SUZUKI HIROSHI , YAMAGUCHI HIDEFUMI
IPC: G02F1/136 , G02F1/133 , G02F1/1343 , G02F1/1362 , G02F1/1368 , G09G3/20 , G09G3/36 , H01L21/336 , H01L27/12 , H01L29/78 , H01L29/786
Abstract: To provide a liquid crystal display having a uniform display characteristic the invention permits the channel width of a thin film transistor driving each pixel to be changed in proportion to the size of each pixel electrode.
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公开(公告)号：CA2065229A1
公开(公告)日：1992-11-16
申请号：CA2065229
申请日：1992-04-08
Applicant: IBM
Inventor： YAMAGUCHI HIDEFUMI
Abstract: A method and an apparatus for driving a liquid crystal display, in which flicker and cross talk are removed for arbitrary display patterns. The liquid crystal display has a plurality of scan lines, a plurality of data lines, and a plurality of pixels arranged in a matrix at the intersections of the scan and the data lines. The polarity of data signals outputted to the data lines is inverted for each occurrence of a pixel to be placed into a predetermined state. The predetermined state may be a dark state or a bright state of a binary display, or one of several levels of a display having more than two gray scale levels.
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公开(公告)号：CA1309521C
公开(公告)日：1992-10-27
申请号：CA572878
申请日：1988-07-22
Applicant: IBM
Inventor： YAMAGUCHI HIDEFUMI
IPC: G02B5/20 , G02F1/1335 , G02F1/1343 , H04N9/12 , H04N3/12 , G02F1/133
Abstract: A colour display for producing substantially homogenous display quality for vertical and oblique, as well as horizontal lines calls for the sequential arrangement of red, green, and blue picture elements, respectively, in diagonal directions of first, second and third coincident rectangles such that the red, green and blue picture elements are respectively positioned at the vertices of their respective rectangles.
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