Matrix-type display device

DETAILED DESCRIPTION An object of the present invention is to reduce the power consumption and the amount of heat generation during operation of a matrix-type display device.
To attain the above object, according to a first aspect of the invention, there is provided a matrix-type display device comprising pixels arranged in matrix form; scanning lines for supplying scanning signals to the respective pixels; signal lines for supplying display signals to the respective pixels; a scanning line driver circuit connected to the scanning lines; a signal line driver circuit connected to the signal lines, at least one of the scanning line driver circuit and the signal line driver circuit being divided into a plurality of sectional circuits; and selection means for selectively supplying a clock signal to the respective sectional circuits.
In the above matrix-type display device, the divided signal line driver circuit may comprise a decoder circuit for selecting among the signal lines and a counter circuit for controlling the decoder circuit, each of the decoder circuit and the counter circuit being divided to constitute the sectional circuits.
In the above matrix-type display device, the divided scanning line driver circuit may comprise a decoder circuit for selecting among the scanning lines and a counter circuit for controlling the decoder circuit, each of the decoder circuit and the counter circuit being divided to constitute the sectional circuits.
The above matrix-type display device may further comprise a select signal generation circuit for supplying a select signal to the selection means, and the select signal generation circuit, the scanning line driver circuit, and the signal line driver circuit may be formed on the same substrate as the pixels by using thin-film transistors.
According to a second aspect of the invention, there is provided a matrix-type display device comprising pixels arranged in matrix form; scanning lines for supplying scanning signals to the respective pixels; signal lines for supplying display signals to the respective pixels; a scanning line driver circuit connected to the scanning lines; a signal line driver circuit connected to the signal lines, at least one of the scanning line driver circuit and the signal line driver circuit being divided into a plurality of sectional circuits; and selection means for selectively supplying a power supply voltage to the respective sectional circuits