Patent ID: 9336723
Filing Date: 2016-05-10
CPC Classification: G06F,G09G,H01L

Claim Text:
1. A touch screen comprising: a transistor layer including a first transistor and a second transistor connected to the first transistor; a first layer disposed over the transistor layer and configured to operate as a light-emitting diode (LED) cathode during a display phase and as touch circuitry during a touch sensing phase; an LED layer disposed between the transistor layer and the first layer, wherein the first transistor is connected to the LED layer and a power supply line; and a gate voltage line connected to a gate terminal of the second transistor, wherein during the display phase, the gate voltage line is set to a first voltage, which causes the second transistor to turn on, and during the touch sensing phase, the gate voltage line is set to a second voltage, which causes the second transistor to turn off.