公开(公告)号：GB2313465B

公开(公告)日：1999-11-17

申请号：GB9709681

申请日：1997-05-14

Applicant: IBM

Inventor： KIMURA YASUHIRO ,  MATINO HARUHIRO

IPC: G02F1/133 ,  G09G3/20 ,  G09G3/36

Abstract: To correct the dependency of the transmissivity/applied voltage characteristics on color, a computing circuit is provided for generating corrected gray scale data by performing an addition or subtraction of the gray scale level related to at least one color. A delay circuit delays the gray scale data for uncorrected colors to maintain synchronization between the gray scale signals of all colors.

公开(公告)号：BR8704370A

公开(公告)日：1988-04-19

申请号：BR8704370

申请日：1987-08-25

Applicant: IBM

Inventor： MATINO HARUHIRO

IPC: G09G3/20 ,  G02F1/133 ,  G09G3/36 ,  H04N3/12 ,  G06F3/147

公开(公告)号：DE68915414D1

公开(公告)日：1994-06-23

申请号：DE68915414

申请日：1989-12-13

Applicant: IBM

Inventor： MATINO HARUHIRO ,  UEKI TOSHIHIRO

IPC: G02F1/133 ,  G02F1/1335 ,  G02F1/1343 ,  G02F1/1362 ,  G09G3/20 ,  G09G3/36 ,  G02F1/136

Abstract: The present invention relates to a liquid crystal display device (DU) comprising a plurality of display units each having n (where n is a positive integer) pixels (picture elements) (T1, T2, T3, T4 : S1, S2, S3), each of which pixels can be made either to transmit or to receive light, means for applying a voltage to the region of the liquid crystal (3) adjacent to each pixel in order to control the transmission characteristic of each pixel and a light transmission factor control layer (31, 32, 33, 34) for controlling the light transmission factor of each pixel. According to the invention, the display device is characterised in that the ratios between the light transmission factors of the pixels in each display unit are 2 : 2 : 2 : 2 .

公开(公告)号：CA2006244C

公开(公告)日：1993-08-31

申请号：CA2006244

申请日：1989-12-20

Applicant: IBM

Inventor： MATINO HARUHIRO ,  UEKI TOSHIHIRO

IPC: G02F1/133 ,  G02F1/1335 ,  G02F1/1343 ,  G02F1/1362 ,  G09G3/20 ,  G09G3/36

Abstract: The disclosure describes the provision of a liquid crystal display device which permits of multi-gradation display merely he the application and non-application of a voltage to a liquid crystal without increasing an area of one display unit and without the necessity for fine adjustment of the voltage applied to the liquid crystal of each pixel.

公开(公告)号：DE68915414T2

公开(公告)日：1994-11-24

申请号：DE68915414

申请日：1989-12-13

Applicant: IBM

Inventor： MATINO HARUHIRO ,  UEKI TOSHIHIRO

IPC: G02F1/133 ,  G02F1/1335 ,  G02F1/1343 ,  G02F1/1362 ,  G09G3/20 ,  G09G3/36 ,  G02F1/136

Abstract: The present invention relates to a liquid crystal display device (DU) comprising a plurality of display units each having n (where n is a positive integer) pixels (picture elements) (T1, T2, T3, T4 : S1, S2, S3), each of which pixels can be made either to transmit or to receive light, means for applying a voltage to the region of the liquid crystal (3) adjacent to each pixel in order to control the transmission characteristic of each pixel and a light transmission factor control layer (31, 32, 33, 34) for controlling the light transmission factor of each pixel. According to the invention, the display device is characterised in that the ratios between the light transmission factors of the pixels in each display unit are 2 : 2 : 2 : 2 .

公开(公告)号：DE3884313T2

公开(公告)日：1994-04-21

申请号：DE3884313

申请日：1988-07-22

Applicant: TOSHIBA KAWASAKI KK ,  IBM

Inventor： MATINO HARUHIRO ,  UEKI TOSHIHIRO ,  OANA YASUHISA ,  KAJIMURA MOTOJI

IPC: G02B5/20 ,  G02F1/1335 ,  G09F9/35 ,  G02F1/133

Abstract: A color liquid crystal display having chromatic pixels and achromatic pixels, comprises: color filters (12, 14, 16) formed at locations corresponding to said chromatic pixels (13, 15, 17) and having a light transmitting area for predetermined wavelength; and translucent filters (18) formed at locations corresponding to said achromatic pixels (19) and near an outer periphery of locations corresponding to said chromatic pixels so as to be overlapped with said color filters.

公开(公告)号：DE3884313D1

公开(公告)日：1993-10-28

申请号：DE3884313

申请日：1988-07-22

Applicant: TOSHIBA KAWASAKI KK ,  IBM

Inventor： MATINO HARUHIRO ,  UEKI TOSHIHIRO ,  OANA YASUHISA ,  KAJIMURA MOTOJI

IPC: G02B5/20 ,  G02F1/1335 ,  G09F9/35 ,  G02F1/133

Abstract: A color liquid crystal display having chromatic pixels and achromatic pixels, comprises: color filters (12, 14, 16) formed at locations corresponding to said chromatic pixels (13, 15, 17) and having a light transmitting area for predetermined wavelength; and translucent filters (18) formed at locations corresponding to said achromatic pixels (19) and near an outer periphery of locations corresponding to said chromatic pixels so as to be overlapped with said color filters.

公开(公告)号：CA1283473C

公开(公告)日：1991-04-23

申请号：CA572879

申请日：1988-07-22

Applicant: IBM

Inventor： MATINO HARUHIRO ,  UEKI TOSHIHIRO ,  OANA YASUHISA ,  KAJIMURA MOTOJI

IPC: G02B5/20 ,  G02F1/1335 ,  G09F9/35 ,  G02F1/133

Abstract: A colour liquid crystal display compirses colour filters formed at locations corresponding to chromatic pixels and having a light transmitting area for predetermined wavelength. Translucent filters formed at locations corresponding to achromatic pixels, and near an outer periphery of locations corresponding to the chromatic pixels, are overlapped with the colour filters. A manufacturing method for realizing the above comprises the steps of: forming material constituting translucent filters on a substrate; removing the material constituting the translucent filters at locations corresponding to pixels on which colour filters are to be formed from the substrate; and forming the material constituting the colour filters at colour filter locations corresponding to pixels on which the colour filters are to be formed on the substrate and at locations which are near the colour filter locations so as to be overlapped with the material constituting the translucent filters.

公开(公告)号：GB2313465A

公开(公告)日：1997-11-26

申请号：GB9709681

申请日：1997-05-14

Applicant: IBM

Inventor： KIMURA YASUHIRO ,  MATINO HARUHIRO

IPC: G02F1/133 ,  G09G3/20 ,  G09G3/36

Abstract: In a colour liquid crystal display grey scale data for one colour is fed to a computing circuit 32. This circuit modifies the grey scale data by addition or subtraction so that it has the same transmissivity as the other colours. The unmodified greyscale signals for the other colours are directed to a buffer 26 which delays the signals while the modified greyscale is being generated. This technique corrects for the dependency of the transmissivity/voltage characteristic on wavelength.

公开(公告)号：CA2006244A1

公开(公告)日：1990-06-21

申请号：CA2006244

申请日：1989-12-20

Applicant: IBM

Inventor： MATINO HARUHIRO ,  UEKI TOSHIHIRO

IPC: G02F1/133 ,  G02F1/1335 ,  G02F1/1343 ,  G02F1/1362 ,  G09G3/20 ,  G09G3/36

Abstract: The present invention relates to a liquid crystal display device (DU) comprising a plurality of display units each having n (where n is a positive integer) pixels (picture elements) (T1, T2, T3, T4 : S1, S2, S3), each of which pixels can be made either to transmit or to receive light, means for applying a voltage to the region of the liquid crystal (3) adjacent to each pixel in order to control the transmission characteristic of each pixel and a light transmission factor control layer (31, 32, 33, 34) for controlling the light transmission factor of each pixel. According to the invention, the display device is characterised in that the ratios between the light transmission factors of the pixels in each display unit are 2 : 2 : 2 : 2 .