Patent ID: 8773372
Filing Date: 2014-07-08
Classification: G06F

Abstract:
1. An optical plate structure for a touch panel, comprising: an optical plate having a light-emitting surface and a side surface, wherein the light-emitting surface and the side surface are connected to each other, and the light-emitting surface comprises a plurality of micro-structures; at least a light source, disposed beside the side surface of the optical plate, and emitting a first light to be incident on the side surface to enter the optical plate, wherein the first light is guided by the optical plate and emitted out of the optical plate from the light-emitting surface of the optical plate to become a second light, wherein the micro-structures allow the light-emitting surface to have a first Ra value at a place relatively far to the light source and a second Ra value at a place relatively near to the light source, and the first Ra value is greater than the second Ra value; and at least an optical camera disposed beside or in a corner of the optical plate and above the light-emitting surface, for detecting a third light incident on the light camera, wherein the second light is reflected by an object touching the optical plate to become the third light.