Image display device
View Patent ↗A shift in the frame of a moving image in an image display device using self-luminous element is made hard to see. A data line driving circuit is provided with a triangular wave generating circuit for generating a number of types of triangular waves having different phases and waveforms, and gradation voltage-triangular wave switching circuit for selecting and switching one of the number of types of triangular waves generated by the triangular wave generating circuit for each signal line. One horizontal period is divided into a signal write-in period and a triangular wave period, so that the signal voltage and triangular wave are outputted during the signal write-in period and the triangular wave period, respectively.
1. An image display device, comprising:
a display portion formed of a display region where a number of pixels are aligned in a matrix in rows and columns;
a number of signal lines aligned so as to extend in the column direction of said matrix in order to input a display signal voltage into pixels in said display region; and
a signal line driving circuit for applying a signal voltage to said signal lines, characterized in that said signal line driving circuit has a voltage generating circuit which outputs a signal voltage in accordance with input display data to said signal lines during a certain period in one horizontal period and outputs a triangular wave voltage which increases and decreases in one frame period to each of the signal lines with opposite phases between odd columns and even columns of said signal lines during the remaining period of said one horizontal period.
2. An image display device, comprising:
a display portion formed of a display region where a number of pixels are aligned in a matrix in rows and columns;
a number of signal lines aligned so as to extend in the column direction of said matrix in order to input a display signal voltage into pixels in said display region;
a signal line driving circuit for applying a signal voltage to said signal lines;
a voltage generating circuit for generating a voltage which increases and decreases in a certain period; and
a switching circuit for switching signals outputted to said signal lines, characterized in that said voltage generating circuit generates two types of voltages:
a voltage which increases and decreases during said one frame period and a voltage gained by inverting this voltage, and
said switching circuit switches and outputs said signal voltage in accordance with input display data during one horizontal period and the two types of voltages which increase and decrease during said certain period between signal lines in odd columns and even columns of said signal lines, the two types of voltages being a triangular wave voltage which increases and decreases during said certain period to each of the signal lines with opposite phases between odd columns and even columns of said signal lines during said certain period.