Abstract: A knob structure for adjusting a sound parameter is provided, which includes a knob, an encoder, an interference component and a switching module. The knob has a shaft portion and an internal teeth portion. The encoder is connected to the shaft portion of the knob, in which the encoder includes a turntable and a bottom plate. The turntable has one or more protrusions in contact with the bottom plate. When the knob is rotated to rotate the turntable of the encoder, the one or more protrusions rub against the bottom plate. The interference component has a first end adjacent to the internal teeth portion of the knob. The switching module is configured to make the first end of the interference component be in contact with or moved away from the internal teeth portion of the knob. A headphone including the knob structure is also provided.

Abstract: A touch panel includes a substrate, a decoration pattern, a covering layer, and a touch sensing element. The substrate has a first region and a second region. The decoration pattern is disposed on the first region of the substrate and has a first thickness. The covering layer includes a first portion covering the second region of the substrate and a second portion covering the decoration pattern, wherein the second portion has a second thickness and the first portion has a third thickness. The second thickness is less than the third thickness. The touch sensing element is disposed on the covering layer.