DISPLAY DRIVER CIRCUIT, DISPLAY DEVICE, AND DISPLAY DRIVING METHOD
First Claim
1. A display drive circuit for carrying out display with a tone corresponding to a potential of a pixel electrode by driving a display panel including a plurality of rows each including a scan signal line, a switching element that is turned on/off by the scan signal line, the pixel electrode connected to one end of the switching element, and a capacitive coupling interconnection capacitively-coupled to the pixel electrode, and further including a data signal line connected to the other end of the switching element on each of the rows,the display drive circuit comprising:
- a scan signal line drive circuit that outputs, in a horizontal scanning period which is sequentially allocated to the each of the rows, a scan signal for turning on the switching element on one row;
a data signal line drive circuit that outputs a data signal of which polarity is reversed in sync with the horizontal scanning period for the each of the rows and of which polarity is opposite in an adjacent horizontal scanning period on one and the same row;
a capacitive coupling interconnection drive circuit that outputs, after the horizontal scanning period for the each of the rows, a potential shift signal of which potential is switched between two potential levels along a direction determined according to the polarity of the data signal in the horizontal scanning period concerned, whereinthe capacitive coupling interconnection drive circuit outputs the potential shift signal, in a first vertical scanning period from which output of a data signal corresponding to a video image to be displayed is started, so that a potential of the potential shift signal at a time of on-to-off switching of the switching element on the one row is different from a potential of a potential shift signal on an adjacent row.
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Accused Products
Abstract
One embodiment of the present invention includes: a gate line drive circuit that outputs, in a horizontal scanning period which is sequentially allocated to each one of rows, a gate signal for turning on the switching element on one row; a source bus line drive circuit that outputs a source signal of which polarity is reversed in sync with the horizontal scanning period for each of the rows and of which polarity is opposite in an adjacent horizontal scanning period on one and the same row; a CS bus line drive circuit that outputs, after the horizontal scanning period for each of the rows, a CS signal of which potential is switched along a direction (from low level to high level or from high level to low level) determined according to the polarity of the source signal in the horizontal scanning period concerned, wherein the CS bus line drive circuit outputs the CS signal in a first frame so that a potential of the CS signal at a time of on-to-off switching of the switching element on the one row is different from a potential of a CS signal on an adjacent row. This eliminates the occurrence of lateral stripes in the first frame from which display corresponding to a video signal is started in CC driving premised on line inversion driving.
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Citations
12 Claims
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1. A display drive circuit for carrying out display with a tone corresponding to a potential of a pixel electrode by driving a display panel including a plurality of rows each including a scan signal line, a switching element that is turned on/off by the scan signal line, the pixel electrode connected to one end of the switching element, and a capacitive coupling interconnection capacitively-coupled to the pixel electrode, and further including a data signal line connected to the other end of the switching element on each of the rows,
the display drive circuit comprising: -
a scan signal line drive circuit that outputs, in a horizontal scanning period which is sequentially allocated to the each of the rows, a scan signal for turning on the switching element on one row; a data signal line drive circuit that outputs a data signal of which polarity is reversed in sync with the horizontal scanning period for the each of the rows and of which polarity is opposite in an adjacent horizontal scanning period on one and the same row; a capacitive coupling interconnection drive circuit that outputs, after the horizontal scanning period for the each of the rows, a potential shift signal of which potential is switched between two potential levels along a direction determined according to the polarity of the data signal in the horizontal scanning period concerned, wherein the capacitive coupling interconnection drive circuit outputs the potential shift signal, in a first vertical scanning period from which output of a data signal corresponding to a video image to be displayed is started, so that a potential of the potential shift signal at a time of on-to-off switching of the switching element on the one row is different from a potential of a potential shift signal on an adjacent row. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A display driving method for carrying out display with a tone corresponding to a potential of a pixel electrode by driving a display panel including a plurality of rows each including a scan signal line, a switching element that is turned on/off by the scan signal line, the pixel electrode connected to one end of the switching element, and a capacitive coupling interconnection capacitively-coupled to the pixel electrode, and further including a data signal line connected to the other end of the switching element on each of the rows,
the display driving method comprising: -
a scan signal line driving process of outputting, in a horizontal scanning period which is sequentially allocated to the each of the rows, a scan signal for turning on the switching element on one row; a data signal line driving process of outputting a data signal of which polarity is reversed in sync with the horizontal scanning period for the each of the rows and of which polarity is opposite in an adjacent horizontal scanning period on one and the same row; and a capacitive coupling interconnection driving process of outputting, after the horizontal scanning period for the each of the rows, a potential shift signal of which potential is switched between two potential levels along a direction determined according to the polarity of the data signal in the horizontal scanning period concerned, wherein the capacitive coupling interconnection drive circuit outputs the potential shift signal, in a first vertical scanning period from which output of a data signal corresponding to a video image to be displayed is started, so that a potential of the potential shift signal at a time of on-to-off switching of the switching element on the one row is different from a potential of a potential shift signal on an adjacent row.
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Specification