Display device and panel compensation method thereof
AssigneeSilicon Works Co., Ltd.
InventorsKyung Jik Min, Won Kab Oh, Su Hun Yang, Jeong Hie Choi
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Abstract
Disclosed are a display device and a panel compensation method of the display device. The panel compensation method of the display device includes a step of allowing at least one line pixel of a display panel to be a current source that generates a pixel current with the same value, and a step of correcting a deviation between all current sensing paths of a source driver by using the pixel current with the same value and correcting a characteristic deviation between all pixels after correcting the deviation between the current sensing paths.
Claims18
A panel compensation method of a display device, comprising the steps of:
- (a) using at least one line pixel as a current source that generates a pixel current with a same value by correcting a characteristic deviation of the at least one line pixel of a display panel;
- and
- (b) correcting a deviation between current sensing paths of a source driver by using the pixel current with the same value provided from the at least one line pixel, and correcting a characteristic deviation between pixels by using the corrected current sensing paths.
A display device comprising:
- a sensing circuit that performs at least one of first driving for sensing a voltage of a sensing line corresponding to at least one line pixel of a display panel and to which a reference voltage is applied, second driving for sensing a pixel voltage corresponding to first reference data applied to the at least one line pixel, third driving for sensing a pixel current with a same value applied to sensing lines, and fourth driving for sensing a current of pixels corresponding to second reference data applied to the pixels;
- an analog-to-digital converter that converts sensing signals by at least one of the first driving to the fourth driving into first to fourth digital data;
- and
- a compensation circuit that controls the reference voltage to be applied to the sensing line corresponding to the at least one line pixel, controls the first reference data to be applied to the at least one line pixel, controls the pixel current with the same value to be applied to the sensing lines, controls the second reference data to be applied to the pixels, and corrects characteristics of the sensing circuit, a characteristic deviation of the at least one line pixel, a deviation between current sensing paths of the sensing circuit, and a characteristic deviation between the pixels by using the first to fourth digital data received from the analog-to-digital converter.
A display device comprising:
- a panel compensation circuit,
- wherein the panel compensation circuit corrects characteristics of a source driver by applying a reference voltage to a sensing line corresponding to at least one line pixel of a display panel,
- corrects a characteristic deviation of the at least one line pixel by applying first reference data, in which the characteristics of the source driver have been corrected, to the at least one line pixel,
- corrects a deviation between current sensing paths of the source driver by applying a pixel current with a same value of the at least one line pixel to the sensing lines, and
- corrects a characteristic deviation between pixels by applying second reference data, in which the deviation between the current sensing paths of the source driver has been corrected, to the pixels.
Dependencies are inferred from the claim text.