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

Claim 5:
6. The liquid crystal display device according to claim 5, further comprising
a plurality of scanning lines to which the pixels are coupled, wherein
the liquid crystal capacitance value includes a first capacitance value at a first gradation and a second capacitance value at a second gradation smaller than the first gradation,
the first gradation is set to a gradation of 95% or larger in the pixel,
the second gradation is set to a gradation of 5% or smaller in the pixel,
a period from a selection timing of the scanning line to which the pixel is coupled to the detection timing of the detected capacitance value is defined as a first period,
a period from the selection timing of the scanning line to which the pixel is coupled to when the liquid crystal capacitance value reaches the first capacitance value or the second capacitance value corresponding to the gradation of the pixel is defined as a second period,
a region where the first period is equal to or longer than the second period is defined as a first region,
a region where the first period is shorter than the second period is defined as a second region,
the detection circuit determines, when the pixel is provided in the first region, the first capacitance value to be the liquid crystal capacitance value of the pixel at the detection timing, and
the detection circuit determines, when the pixel is provided in the second region, a value obtained by multiplying the first capacitance value by a coefficient corresponding to a ratio between the first period and the second period to be the liquid crystal capacitance value of the pixel at the detection timing.