Patent ID: 9286848
Filing Date: 2016-03-15
CPC Classification: G06F,G09G,H01L

Claim Text:
1. A method for driving a liquid crystal display device comprising first light sources, second light sources, a detection circuit, an image sensor driver circuit, a scan line driver circuit and a pixel portion, the pixel portion comprising display pixels in m rows and n columns and image-capture pixels in x rows and y columns (m, n, x and y are natural numbers of 4 or more), comprising the steps of: performing first supply of an image signal of a first color for the display pixels in first to k-th rows sequentially (k is a natural number of less than m/2) in a period; performing second supply of an image signal of a second color for the display pixels in (k+1)-th to 2k-th rows sequentially in the period; emitting light of the first color for the display pixels in first to s-th rows and light of the second color for the display pixels in (k+1)-th to (k+s)-th rows (s is a natural number of k/2 or less) in the period and after the first supply for the display pixels in the first to s-th rows and the second supply for the display pixels in the (k+1)-th to (k+s)-th rows are finished; performing a first image capture utilizing light of the first color in the image-capture pixels in first to v-th rows sequentially (v is a natural number of x/4 or less) while emitting the light of the first color to obtain an image of the first color; and performing a second image capture utilizing light of the second color in the image-capture pixels in (w+1)-th to (w+v)-th rows sequentially (w is a natural number greater than or equal to 2v and less than or equal to x/2) while emitting the light of the second color to obtain an image of the second color, wherein the first color and the second color are different from each other, wherein the first supply and the second supply are performed concurrently, wherein the first image capture and the second image capture are performed concurrently, wherein the first light sources emit light of the first color, wherein the second light sources emit light of the second color, wherein the liquid crystal display device further comprises a first image-capture signal line and a second image-capture signal line which are parallel to each other and provided for each column of the image-capture pixels, wherein in each column, the image-capture pixels in the first to v-th rows are connected to the first image-capture signal line and the image-capture pixels in the (w+1)-th to (w+v)-th rows are connected to the second image-capture signal line, wherein the first image capture is performed by determining a potential of the first image-capture signal line by the detection circuit and the second image capture is performed by determining a potential of the second image-capture signal line by the detection circuit, wherein the pixel portion comprises a first region which includes the display pixels in the first to k-th rows and the image-capture pixels in the first to v-th rows and a second region which includes the display pixels in the (k+1)-th to 2k-th rows and the image-capture pixels in the (w+1)-th to (w+v)-th rows, and wherein the second region includes the first image-capture signal line and the second image-capture signal line.