US Patent 11402947 Electronic device and method for testing the same

An electronic device includes: an input sensor on a display panel; and a sensor controller configured to operate in a first mode for sensing a first input by an input device or a second mode for sensing a second input through the input sensor, the sensor controller being configured to transmit an uplink signal to the input device through the input sensor and to receive a downlink signal from the input device through the input sensor in the first mode, wherein an input sensing frame comprises an uplink period in which the uplink signal is provided to the input sensor, and an interval between a start time point of the display frame and a start time point of the uplink period is variable in a unit of at least one input sensing frame during k input sensing frames, where k is an integer equal to or greater than 2.