A Touch Display Device
(57) Abstract
A touch display device includes a display panel; a backlight that includes a back plate; a pressure touch detection chip; a pressure sensing layer and a voltage reference layer arranged between the display panel and the back plate, the pressure sensing layer and the voltage reference layer are opposite to each other and arranged in different layers. The pressure sensing layer includes a plurality of sensing electrodes arranged as an array, where each sensing electrode is electrically connected to the pressure touch detection chip through a lead wire. The voltage reference layer is configured to receive a stable reference voltage signal; and the pressure touch detection chip is configured to determine a value of a pressure on the display panel according to a detected change of capacitance between the pressure sensing layer and the voltage reference layer.
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