Patent ID: 9648700
Date: 2017-05-09
CPC Classifications: G06F,G06K,G09G,H05B,Y02B

Claim:
1. A system, comprising: a current sensor configured to convert a current flowing through a plurality of pixels into an output voltage, wherein each of the plurality of pixels comprises an organic light emitting diode (OLED); a switch configured to decouple the plurality of pixels from the current sensor in a first switching state and to couple the plurality of pixels to the current sensor in a second switching state; and a controller configured to control the switch to be in the first switching state based on the plurality of pixels functioning in a display mode, and to control the switch to be in the second switching state based on the plurality of pixels functioning in a sense mode, wherein the controller is further configured to determine that the plurality of pixels have been touched based on a light level associated with one or more samples of the output voltage.