Patent ID: 9354735
Filing Date: 2016-05-31
CPC Classification: G02F,G06F,G09G

Claim Text:
1. A display device having a surface for viewing an image comprising: a stack of layers configured to display the image; and a plurality of light sensitive elements included in the stack, the plurality of light sensitive elements configured to detect an object on or near the surface, wherein a processor is configured to detect a touching state of the object based on a region having an inner region and an outer region, wherein the touching state is detected when the inner region is lighter than the outer region and lighter than ambient light reaching the display, and the outer region is darker than the inner region and darker than ambient light reaching the display, a light guide having a surface wherein the processor is configured to detect the touching state of the object relative to the surface of the light guide, wherein the plurality of light sensitive elements are configured to detect a diffusion of light from the light guide due to contact of the object on the light guide.