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US 7,064,736 B2Granted
Liquid crystal display device
AssigneeHitachi, Ltd.
InventorsYasuyuki Kudo, Tsutomu Furuhashi, Yoshiro Mikami, Shinichi Komura, Toshio Miyazawa
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Abstract
A liquid crystal display device includes a liquid crystal panel having a plurality of pixels disposed in a matrix format, a Y-selecting signal generating unit for selecting one or more pixel rows, an X-selecting signal generating unit for selecting one or more pixel columns, and a tone signal generating unit for generating a tone signal for applying the corresponding tone voltage to tone information of said display data onto each of the pixels.
Claims9
A display device for displaying display data, comprising:
- a display panel having a plurality of pixels disposed in a matrix format;
- a Y-circuit for generating a Y-selecting signal for selecting one or more pixel rows of said plurality of pixels and outputting said Y-selecting signals to said pixels;
- and
- an X-circuit for generating a tone signal according to said display data for each of said plurality of pixels and outputting said tone signal to said plurality of pixels,
- wherein each of said plurality of pixels includes a memory for holding the tone signal, a conversion circuit for converting, based on a sweep signal of a stepwise waveform, the tone signal from said memory into a pulse voltage having a time width according to said display data, and an electrode driven by the pulse voltage.
2 more elements
A display device for displaying display data, comprising:
- a display panel having a plurality of pixels disposed in a matrix format;
- a Y-circuit for generating a Y-selecting signal for selecting one or more pixel rows of said plurality of pixels and outputting said Y-selecting signals to said pixels;
- and
- an X-circuit for generating a tone signal according to said display data for each of said plurality of pixels and outputting said tone signal to said plurality of pixels,
- wherein each of said plurality of pixels includes a memory for holding the tone signal, a first conversion circuit for generating a binary pulse signal having a time width according to the tone signal from said memory, a second conversion circuit for outputting, in accordance with a level of the pulse signal, an ac signal having an amplitude which changes periodically or a center voltage having a level between a high level and a low level of the ac signal, and an electrode driven by the selected signal from said selection circuit.
2 more elements
Dependencies are inferred from the claim text.