Display device and drive method therefor
A timing control circuit ( 1 ) and data line drive circuits ( 2 a ) to ( 2 f ) are connected in a multi-drop manner. When sending video data (VD) to the data line drive circuits ( 2 a ) to ( 2 f ), the timing control circuit ( 1 ) changes a transmission condition in accordance with a transmission distance between the timing control circuit ( 1 ) and a destination data line drive circuit. The timing control circuit ( 1 ) increases a transmission frequency as the transmission distance is shorter. The timing control circuit ( 1 ) may decrease a transmission signal amplitude as the transmission distance is shorter. With this, the video data (VD) is transmitted to the plurality of the data line drive circuits ( 2 a ) to ( 2 f ) in a suitable manner.
1. A display device comprising:
a display panel having a plurality of data lines;
a control circuit configured to send video data; and
a plurality of data line drive circuits configured to drive the data lines based on the video data received from the control circuit, wherein
the control circuit and the data line drive circuits are connected in a multi-drop manner,
the control circuit is configured to change a transmission condition in accordance with a transmission distance between the control circuit and a destination data line drive circuit when sending the video data,
the data line drive circuits are arranged along one side of the display panel, and
the control circuit is configured
to send the video data in accordance with an arrangement order of the data line drive circuits,
to change the transmission condition monotonously within one horizontal period, and
to reverse a sending order of the video data every horizontal period.
2. The display device according to claim 1 , wherein the control circuit is configured to increase a transmission frequency as the transmission distance is shorter when sending the video data.
3. The display device according to claim 1 , wherein the control circuit is configured to decrease a transmission signal amplitude as the transmission distance is shorter when sending the video data.
4. The display device according to claim 1 , wherein the control circuit is configured to change the transmission condition with respect to one or more data line drive circuits.
5. The display device according to claim 1 , wherein the control circuit is configured to change the transmission condition while sending the video data to one data line drive circuit.
6. The display device according to claim 1 , wherein the display panel is a liquid crystal panel.
7. A drive method for a display device including a display panel having a plurality of data lines, and a control circuit and a plurality of data line drive circuits connected in a multi-drop manner, the method comprising the step of:
sending video data from the control circuit;
receiving the video data by the data line drive circuits; and
driving the data lines based on the video data received by the data line drive circuits, wherein
in the sending, a transmission condition is changed in accordance with a transmission distance between the control circuit and a destination data line drive circuit,
the data line drive circuits are arranged along one side of the display panel, and
in the sending,
the video data is sent in accordance with an arrangement order of the data line drive circuits,
the transmission condition is changed monotonously within one horizontal period, and
a sending order of the video is reversed every horizontal period.
8. The display device according to claim 2 , wherein the control circuit is configured to decrease a transmission signal amplitude as the transmission distance is shorter when sending the video data.