Back to results
US 2022/0189374 A1Published application
Data Driving Device and Panel Driving Method of Data Driving Device
AssigneeLx Semicon Co., Ltd.
InventorHyun Woo Jeong
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to a data driving device and a panel driving method of the data driving device. More particularly, it relates to a data driving device and a panel driving method of the data driving device in which a programmable gamma circuit is applied to a gamma voltage circuit of the data driving device and some components of a channel circuit are used in common so as to reduce the size of the data driving device.
Claims9
A data driving device comprising:
- a gamma voltage circuit configured to output first gamma reference voltages corresponding to a first color during a first horizontal driving period, to output second gamma reference voltages corresponding to a second color during a second horizontal driving period, and to output third gamma reference voltages corresponding to a third color during a third horizontal driving period;
- and
- a channel circuit configured to output a first data voltage by using first color data corresponding to the first color and the first gamma reference voltages during the first horizontal driving period, to output a second data voltage by using second color data corresponding to the second color and the second gamma reference voltages during the second horizontal driving period, and to output a third data voltage by using third color data corresponding to the third color and the third gamma reference voltages during the third horizontal driving period.
A method for driving a display panel by a data driving device, comprising:
- receiving first color data corresponding to all channels of the display panel and a first gamma set value from a data processing device;
- generating first gamma reference voltages corresponding to a first color by using the first gamma set value during a first horizontal driving period;
- generating first data voltages by using the first color data and the first gamma reference voltages;
- supplying the first data voltages to first color pixels disposed on one row of the display panel;
- receiving second color data corresponding to all the channels of the display panel and a second gamma set value from the data processing device;
- generating second gamma reference voltages corresponding to a second color by using the second gamma set value during a second horizontal driving period;
- generating second data voltages by using the second color data and the second gamma reference voltages;
- supplying the second data voltages to second color pixels disposed on the one row;
- receiving third color data corresponding to all the channels of the display panel and a third gamma set value from the data processing device;
- generating third gamma reference voltages corresponding to a third color by using the third gamma set value during a third horizontal driving period;
- generating third data voltages by using the third color data and the third gamma reference voltages;
- and
- supplying the third data voltages to third color pixels disposed on the one row.
10 more elements
Dependencies are inferred from the claim text.