Touch sensitive display system

摘要

A display includes a display area that emits light and a border region surrounding at least a portion of the light emitting region. A light guide plate is overlaying the display area. A lighting module is operatively interconnected with the light guide plate to provide light to the light guide plate and positioned within the border region, and a one camera module is operatively interconnected with the light guide plate to sense light from the light guide plate and positioned within the border region. The display determines a position of a touch on the light guide plate by determining a location of frustrated total internal reflection within the light guide plate as a result of the touch on the light guide plate.

主权项

1. A display comprising:
(a) a display area that emits light, a liquid crystal layer and a backlight layer; (b) a border region surrounding at least a portion of said light emitting region; (c) a light guide plate overlaying said display area, said light guide plate positioned at a location on a side of said liquid crystal layer opposite that of said backlight layer; (d) at least one lighting module operatively interconnected with said light guide plate to provide light to said light guide plate and positioned within said border region; (e) at least one camera module operatively interconnected with said light guide plate to sense light from said light guide plate, said at least one camera module supported by said light guide plate, said at least one camera module positioned at a location on a side of said liquid crystal layer opposite that of said backlight layer, and said at least one camera module positioned within said border region; where (f) said display receives a measured angle of a touch on said light guide plate by sensing frustrated total internal reflection within said light guide plate as a result of a true angle of said touch on said light guide plate, said true angle different than said measured angle, where said display determines said true angle using said measured angle.