Patent ID: 11862070
Assignee: LAPIS TECHNOLOGY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A source driver which is connected to a display panel including a plurality of source lines and a plurality of pixel units connected to the plurality of source lines, receives a video data signal including a series of pixel data pieces, and outputs a gradation voltage to be applied to the plurality of pixel units based on the video data signal, the source driver comprising:
a first gradation voltage generation unit which generates a gradation voltage of a first polarity to be supplied to a pixel on a first source line of the plurality of source lines;
a first amplifier which receives an input of the gradation voltage of the first polarity to an input end, amplifies the gradation voltage of the first polarity, and outputs a voltage from an output end;
a second gradation voltage generation unit which generates a gradation voltage of a second polarity corresponding to a polarity opposite to the first polarity to be supplied to a pixel on a second source line corresponding to a source line provided in the vicinity of the first source line;
a second amplifier which receives an input of the gradation voltage of the second polarity to an input end, amplifies the gradation voltage of the second polarity, and outputs a voltage from an output end; and
a voltage comparison unit which compares a voltage of the input end of the second amplifier with a voltage of the output end of the second amplifier and outputs a comparison result.