Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1998-08-27
2000-12-05
Powell, Mark R.
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345209, 345 98, G09G 336, G09G 500
Patent
active
061573582
ABSTRACT:
Since each driving circuit has corresponded to the entire range of signal voltage, the dynamic range is large, it is difficult to constitute it by high Vth transistors, and a circuit having sufficient driving capacity for both input and output of current must be used, leading to increased circuit area and current consumption. To solve the problem, a circuit for driving column lines is divided into two in response to signal voltage with, for example, the common voltage as a reference, and these two column line driving circuits are arranged on the upper and lower sides of the LCD effective screen portion every two columns, and when the output end of the one column line driving circuit is connected to one of two column lines the analog switches are open-close timing controlled so that the output end of the other column line driving circuit is connected to the other of the two column lines.
REFERENCES:
patent: 5168270 (1992-12-01), Maumori et al.
patent: 5196738 (1993-03-01), Takahara et al.
patent: 5266936 (1993-11-01), Saitoh
patent: 5640174 (1997-06-01), Kamei et al.
patent: 5686936 (1997-11-01), Maekawa et al.
patent: 5907314 (1999-05-01), Negishi et al.
patent: 5973660 (1999-10-01), Hashimoto
patent: 5995072 (1999-11-01), Nakajima
patent: 6008801 (1999-12-01), Jeong
patent: 6069605 (2000-05-01), Ozawa
Tsuchi H Et Al: "17.2: A New Digital Data-Line Circuit for TFT-LCD Driving" SID International Symposium, US, Santa Ana, SID, vol. 27, pp. 251-254 XP000621040 ISSN: 0097-966X *p. 252, left-hand column--right-hand column, line 2; figure 1*.
Maekawa Toshikazu
Nakajima Yoshiharu
Blackman Anthony J
Kananen Ronald P.
Powell Mark R.
Sony Corporation
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