Patent ID: 8890850

Claim:
A display device, comprising: a waveguide with a light propagating therein; at least one light source located at edges of the waveguide to emit the light to the waveguide; and a panel including a first organic light-emitting device in a sub-pixel region and a second organic light-emitting device in a sensing region adjacent to the sub-pixel region, the first organic light-emitting device for displaying a data on the panel, and the second organic light-emitting device responsive to a scattering of the light from the waveguide for outputting a signal indicative of a contact on the waveguide, wherein the sub-pixel region includes a first switching transistor which is configured to receive a scan signal from a scan line and transmit a first data signal received from a data line, a first capacitor which is configured to store the first data signal, a first driving transistor which is configured to generate a driving current corresponding to a difference between the first data signal stored in the first capacitor and a reference voltage, and the first organic light emitting device having a first electrode connected to the reference voltage and a second electrode connected to a source voltage to emit light corresponding to the driving current, wherein the sensing region includes a second switching transistor which is configured to receive the scan signal from the scan line and transmit a second data signal received from a data line, a second capacitor which is configured to store the second data signal, a second driving transistor which is configured to be turned on by the second data signal stored in the second capacitor, and the second organic light emitting device having a first electrode connected to the source voltage, and a second electrode connected to the reference voltage, and wherein the first and second organic light-emitting devices are separated from each other and included in an array of organic light-emitting device disposed on a same plane.