Pressure feedback device for providing feedback operation, touch display device and method for operating the same

A pressure feedback device comprising:

• a pressure sensing device, configured to sense a pressure signal upon an occurrence of touch;
• a processor, configured to generate a feedback signal according to the pressure signal;
• and
• a touch feedback device, configured to perform a corresponding feedback operation according to the feedback signal,
• wherein the touch feedback device comprises a first driving electrode layer, a second piezoelectric material layer and a second driving electrode layer, and the second piezoelectric material layer is interposed between the first driving electrode layer and the second driving electrode layer, and
• wherein the pressure sensing device comprises a common electrode layer, a first piezoelectric material layer, and a signal transmitting layer, and the first piezoelectric material layer is interposed between the common electrode layer and the signal transmitting layer;
• the common electrode layer is disposed in the same layer as the first driving electrode;
• the first piezoelectric material layer is disposed in the same layer as the second piezoelectric material layer;
• and the signal transmitting layer is disposed in the same layer as the second driving electrode layer.

A touch display device comprising a display panel and a pressure feedback device disposed over the display panel, wherein the pressure feedback device comprises:

• a pressure sensing device, configured to sense a pressure signal upon an occurrence of touch;
• a processor, configured to generate a feedback signal according to the pressure signal;
• a touch feedback device, configured to perform a corresponding feedback operation according to the feedback signal;
• a display region and a peripheral region located around the display region;
• wherein the pressure sensing device is disposed in the peripheral region, and the touch feedback device is disposed in the display region;
• and
• a flexible circuit board, a first signal transmitting line and a second signal transmitting line, wherein the pressure sensing device is connected to the flexible circuit board through the first signal transmitting line;
• and the touch feedback device is connected to the flexible circuit board through the second signal transmitting line.