Driver circuit for display device and display device
First Claim
1. A driver circuit for a display device including a plurality of signal supply lines, the driver circuit comprising:
- a write circuit for writing write signals onto the signal supply lines line by line or by units of lines; and
a precharge circuit for precharging the signal supply lines, while a write signal is written by the write circuit onto a signal supply line, the precharge circuit precharging another signal supply line, and, while no write signal is written by the write circuit onto any of the signal supply lines, the precharge circuit precharging the signal supply lines simultaneously.
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Accused Products
Abstract
A driver circuit for a display device includes NOR circuits on the input side of switches for controlling precharge of data signal lines and selected pixels connected to the data signal lines. While a video signal is written onto a data signal line, a signal instructing precharge of another data signal line is inputted from a shift register to the NOR circuits. A simultaneous precharge instruction signal is inputted from outside to the NOR circuits. According to this arrangement, precharge is performed in both a period in which a video signal is supplied to a data signal line and a period in which no video signal is supplied to any of the data signal lines. As a result, it is possible to perform precharge even with a precharge power source having relatively low driving capability, and to precharge the signal supply lines of the display device sufficiently.
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Citations
20 Claims
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1. A driver circuit for a display device including a plurality of signal supply lines, the driver circuit comprising:
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a write circuit for writing write signals onto the signal supply lines line by line or by units of lines; and
a precharge circuit for precharging the signal supply lines, while a write signal is written by the write circuit onto a signal supply line, the precharge circuit precharging another signal supply line, and, while no write signal is written by the write circuit onto any of the signal supply lines, the precharge circuit precharging the signal supply lines simultaneously. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A display device, comprising:
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a plurality of pixels;
a plurality of data signal lines and a plurality of scanning signal lines corresponding to the plurality of pixels;
a data signal line driver for writing video signals onto the data signal lines and the pixels; and
a scanning signal line driver for writing scanning signals onto the scanning signal lines so as to select pixels onto which the video signals are to be written, the data signal line driver including a write circuit for writing the video signals onto the data signal lines line by line or by units of lines; and
a precharge circuit for precharging the data signal lines, while a video signal is written by the write circuit onto a data signal line, the precharge circuit precharging another data signal line, and, while no video signal is written by the write circuit onto any of the data signal lines, the precharge circuit precharging the data signal lines simultaneously. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification