Touch sensing apparatus

A touch sensing apparatus, configured to receive an input signal of a stylus pen, comprising:

• a display panel;
• a touch panel, bonded to the display panel and comprising a substrate, a touch sensing element and a decorative element, wherein the touch sensing element is located on the substrate and comprises a plurality of nodes for detecting the input signal of the stylus pen, the plurality of nodes are disposed in an active area of the substrate and are not disposed in a peripheral area of the substrate, and the decorative element covers at least a portion of the peripheral area and exposes at least a portion of the active area;
• and
• a control circuit, coupled to the display panel and the touch panel, wherein
• when the control circuit receives a tip-on signal representing that the stylus pen touches the touch sensing apparatus, and a first capacitive sensing value of a first node at an edge of the active area falls in a first threshold range, the control circuit determines that the input signal of the stylus pen is a peripheral area input signal, and sets the display panel to display a first graph corresponding to the peripheral area input signal;
• when the control circuit receives the tip-on signal representing that the stylus pen touches the touch sensing apparatus, and a second capacitive sensing value of the first node at the edge of the active area is larger than a second threshold that is larger than or equal to a maximum value of the first threshold range, the control circuit determines that the input signal of the stylus pen is an active area input signal, and sets the display panel to display a second graph corresponding to the active area input signal;
• and
• when the control circuit does not receive the tip-on signal representing that the stylus pen touches the touch sensing apparatus, and a third capacitive sensing value of the first node at the edge of the active area is larger than a third threshold, the control circuit determines that the input signal of the stylus pen is a hover input signal, and sets the display panel to display a third graph corresponding to the hover input signal.