Patent ID: 11899880
Assignee: JAPAN DISPLAY INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 3:
4. A liquid crystal display device comprising:
a liquid crystal layer provided between a first substrate and a second substrate;
a detection electrode configured to detect an external proximity object;
a plurality of pixels overlapping the detection electrode in plan view; and
a detection circuit configured to detect a detected capacitance value generated in the detection electrode, wherein
a capacitance value at a predetermined gradation of each of the pixels is used as a reference capacitance value of a liquid crystal capacitance value generated between the pixel and the detection electrode, and
the detection circuit corrects the detected capacitance value by calculating, for each of the pixels, a difference between the liquid crystal capacitance value of the pixel at a detection timing of the detected capacitance value and the reference capacitance value, adding up the differences of the respective pixels, and subtracting the added value from the detected capacitance value.