Timing controller, driver, and display system including them
Disclosed are a timing controller and driver which are improved to have a function of compensating a source signal to be provided to a display panel, and a display system including the timing controller and the driver.
1. A timing controller of a display system, comprising:
a location weight provider configured to provide a location weight set according to the position of each horizontal line, each horizontal line displaying display data corresponding to a current horizontal period; and
a data converter configured to output a transmission signal as a packet, the transmission signal having the display data and control data,
wherein the control data includes a compensation weight generated using the location weight.
2. The timing controller according to claim 1 , wherein the location weight provider stores a plurality of preset location weights corresponding to a plurality of display regions, respectively, into which a display panel is divided for each display region to include a plurality of horizontal lines, and provides the location weight of a display region in which the horizontal line is included.
3. The timing controller according to claim 2 , wherein the location weight provider provides a location weight of a higher value as the display region is farther away from an input location of the display panel where a source signal corresponding to the display data is applied.
4. The timing controller according to claim 1 , wherein the location weight provider comprises:
a location weight storage configured to store a plurality of preset location weights corresponding to a plurality of display regions, respectively, into which a display panel is divided, each display region includes a plurality of horizontal lines; and
a location weight outputter configured to receive the display data to provide location information of the horizontal line corresponding to the current horizontal period on the display panel, to the location weight storage, and receive and output the location weight of the display region corresponding to the location information.
5. The timing controller according to claim 1 , further comprising:
a gray weight provider configured to provide a gray weight corresponding to a gray difference between display data of a previous horizontal period and the display data of the current horizontal period; and
a compensation weight provider configured to provide the compensation weight obtained by calculating the location weight and the gray weight,
wherein the data converter configures the control data including the compensation weight, and outputs the transmission signal in which the display data and the control data are configured as a packet.
6. The timing controller according to claim 5 , wherein the gray weight provider stores a plurality of preset gray weights corresponding to a plurality of gray difference ranges, respectively, into which a maximum range of the gray difference is divided, and provides the gray weight of a gray difference range in which the gray difference is included.
7. The timing controller according to claim 5 , wherein the gray weight provider comprises:
a gray weight storage configured to store a plurality of preset gray weights corresponding to a plurality of gray difference ranges, respectively, into which a maximum range of the gray difference is divided; and
a gray weight outputter configured to receive the display data to provide the gray difference between the display data of the previous horizontal period and the display data of the current horizontal period, to the gray weight storage, and receive and output the gray weight of a gray difference range in which the gray difference is included.
8. The timing controller according to claim 7 , wherein the gray weight outputter provides a gray difference for each column between the display data of the previous horizontal period and the display data of the current horizontal period, to the gray weight storage, and receives and outputs a gray weight for each column.
9. A driver of a display system, comprising:
a recoverer configured to receive a transmission signal, and recover and output display data of a current horizontal period and control data included in the transmission signal;
a signal processing unit configured to generate an analog signal corresponding to the display data;
a controller configured to provide a driving control signal in response to a compensation weight included in the control data; and
an output buffer configured to output a source signal corresponding to the analog signal, and be controlled by the driving control signal in power for outputting the source signal,
wherein the compensation weight is generated using a location weight set according to the position of each horizontal line, each horizontal line displaying display data corresponding to a current horizontal period.
10. The driver according to claim 9 , wherein the location weight corresponds to, among a plurality of preset location weights corresponding to a plurality of display regions, respectively, into which the display panel is divided for each display region to include a plurality of horizontal lines, a display region in which the horizontal line is included.
11. The driver according to claim 9 , wherein
the compensation weight is obtained by calculating the location weight and a gray weight, and
the gray weight corresponds to, among a plurality of preset gray weights corresponding to a plurality of gray difference ranges, respectively, into which a maximum range of a gray difference is divided, a gray difference range in which the gray difference between display data of a previous horizontal period and the display data of the current horizontal period is included.
12. A display system comprising:
a timing controller configured to provide a transmission signal; and
a driver configured to receive the transmission signal, recover display data of a current horizontal period and control data included in the transmission signal, and output a source signal corresponding to the display data and the control data,
the timing controller comprising:
a location weight provider configured to provide a location weight set according to the position of each horizontal line, each horizontal line displaying display data corresponding to the current horizontal period;
a gray weight provider configured to provide a gray weight corresponding to a gray difference between display data of a previous horizontal period and the display data of the current horizontal period;
a compensation weight provider configured to provide a compensation weight obtained by calculating the location weight and the gray weight; and
a data converter configured to output the transmission signal as a packet, the transmission signal having the display data and the control data, the control data including the compensation weight generated using the location weight,
wherein the driver generates an analog signal corresponding to the display data and a driving control signal corresponding to the compensation weight, outputs a source signal corresponding to the analog signal through an output buffer, and controls power of the output buffer for outputting the source signal by the driving control signal.
13. The display system according to claim 12 , wherein the location weight provider stores a plurality of preset location weights corresponding to a plurality of display regions, respectively, into which a display panel is divided for each display region to include a plurality of horizontal lines, and provides the location weight of a display region in which the horizontal line is included.
14. The display system according to claim 12 , wherein the gray weight provider stores a plurality of preset gray weights corresponding to a plurality of gray difference ranges, respectively, into which a maximum range of the gray difference is divided, and provides the gray weight of a gray difference range in which the gray difference is included.
15. The display system according to claim 12 , wherein the driver comprises:
a recoverer configured to receive the transmission signal, and recover and output the display data of the current horizontal period and the control data included in the transmission signal;
a signal processing unit configured to generate the analog signal corresponding to the display data;
a controller configured to provide the driving control signal in response to the compensation weight included in the control data; and
the output buffer configured to output the source signal corresponding to the analog signal, and be controlled by the driving control signal in power for outputting the source signal.