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

Claim 17:
18. A display device comprising:
a display panel which includes a plurality of source lines and a plurality of gate lines and a plurality of pixel units respectively provided in a matrix shape at intersection portions of the plurality of source lines and the plurality of gate lines; and
a source driver which 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,
wherein the source driver includes:
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 first source output terminal which outputs the voltage output from the first amplifier to the first source line,
a first resistor element which is provided between the first amplifier and the first source output terminal and of which one end is connected to the output end of the first amplifier and the other end is connected to the first source output terminal,
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,
a second source output terminal which outputs the voltage output from the second amplifier to the second source line,
a second resistor element provided between the second amplifier and the second source output terminal and of which one end is connected to the output end of the second amplifier and the other end is connected to the second source output terminal, and
a voltage comparison unit which compares a voltage of the output end of the second amplifier with a voltage of a connection node between the other end of the second resistor element and the second source output terminal and outputs a comparison result.