Synaptics Incorporated
REDUCING CONNECTIONS FROM A SENSING MODULE ASSOCIATED WITH A DISPLAY DEVICE

Abstract:

An input device includes a display substrate; a stack of display layers and at least one capacitive sensing layer disposed on the display substrate, the stack of display layers including display pixels of a display screen. The input device further includes capacitive sensing electrodes disposed in the at least one capacitive sensing layer and configured for capacitance sensing. The input device also includes a source driver circuit configured to drive at least a subset of the display pixels; a multiplexer (MUX) circuit coupled to sources and a sensing channel. The sources includes at least a subset of the sensing electrodes. The MUX circuit selectively couples one of the sources to the sensing channel based on a control signal. The input device also includes a semiconductor package enclosing the source driver circuit and the MUX circuit.