INTEGRATED ACTIVE MATRIX TOUCH PANEL WITH AMPLIFICATION

A touch panel includes a plurality of touch panel elements that are operable in a sense mode and a function mode, each touch panel element comprising an array of unit cells. Each unit cell includes: a pixel array including a plurality of pixels arranged in rows and columns; a first transistor M1 that is connected at a first M1 terminal to a sense line (SEN) and at a gate of the first transistor to a first select line (SEL); a second transistor M2 that is connected at a first M2 terminal to a function line (FNC) and at a gate of the second transistor to a second select line (SELB); and amplifier circuitry that is integrated into the unit cell. During a function mode the second transistor is placed in an on state by a control signal from the SELB line to electrically connect the unit cell to the FNC line, and the first transistor is in an off state to electrically disconnect the first transistor from the SEN line. During the sense mode the first transistor is placed in an on state by a control signal from the SEL line to electrically connect the unit cell to the SEN line, and the second transistor is in an off state to electrically disconnect the second transistor from the FNC line; and the amplifier circuitry amplifies a sense signal that flows through the first transistor to the SEN line when the unit cell is in the sense mode.