Patent ID: 9086761
Filing Date: 2015-07-21
Classification: G06F

Abstract:
1. A display apparatus comprising: a display panel that displays an image using a first light; a light guide part positioned at a front side of the display panel to emit a second light different from the first light and guide the second light; a backlight unit positioned at a rear side of the display panel to provide the first light to the display panel; an image information collecting part that photographs the second light emitted from the light guide part to output an image information; and a processing part that processes the image information to generate a coordinate value of a position at which an object provided on the light guide part is positioned, wherein the backlight unit comprises a plurality of first light sources that emit the first light; and a diffusion plate disposed between the display panel and the first light sources to diffuse the first light emitted from the first light sources, the diffusion plate being provided with a plurality of openings formed therethrough, wherein the image information collecting part comprises: a plurality of lenses that receive the second light emitted from the light guide plate, the lenses being provided directly on an upper surface of the diffusion plate to correspond to the openings in one-to-one correspondence; a plurality of optical fiber groups that guide the second light provided through the lenses, ends of the optical fiber groups being accommodated in the openings, respectively; and at least one camera disposed below the diffusion plate to photograph the second light guided by the optical fiber groups and output the image information, wherein the optical fiber groups are disposed between the lens and the camera, wherein the plurality of optical fiber groups is configured to carry the second light from the plurality of lenses to the at least one camera while bypassing the diffusion plate, wherein the diffusion plate comprises a first diffusion portion substantially parallel to the display panel and being provided with the openings and a second diffusion portion extended from the first diffusion portion to a direction vertical to the display panel, and a portion at which the first diffusion s ort on meets the second diffusion portion has a round shape, and wherein the first light sources are divided into a first light source group positioned adjacent to the first diffusion portion and a second light source group positioned adjacent to the second diffusion portion.