A terminal device , comprising: a display unit having a display screen and configured to display images on the display screen ; and a light sensing unit located below the display unit and configured to sense incident light transmitted through the display screen ; wherein the display unit comprises a display panel and the display panel comprises: a first electrode which is a transparent electrode; a second electrode which is an opaque electrode; and an organic layer sandwiched between the first electrode and the second electrode , wherein the organic layer spontaneously emits light when a voltage difference is applied between the first electrode and the second electrode , wherein the second electrode has a semi-transparent area configured to partially reflect and partially transmit the light transmitted through the display screen and a remaining area configured to totally reflect the incident light transmitted through the display screen , the semi-transparent area is disposed corresponding to the light sensing unit and the remaining area is an area of the second electrode except for the semi-transparent area , so as to realize in the second electrode a similar effect as a one-way mirror for limited light transmission control. a display unit having a display screen and configured to display images on the display screen ; and a light sensing unit located below the display unit and configured to sense incident light transmitted through the display screen ; wherein the display unit comprises a display panel and the display panel comprises: a first electrode which is a transparent electrode; a second electrode which is an opaque electrode; and an organic layer sandwiched between the first electrode and the second electrode , wherein the organic layer spontaneously emits light when a voltage difference is applied between the first electrode and the second electrode , wherein the second electrode has a semi-transparent area configured to partially reflect and partially transmit the light transmitted through the display screen and a remaining area configured to totally reflect the incident light transmitted through the display screen , the semi-transparent area is disposed corresponding to the light sensing unit and the remaining area is an area of the second electrode except for the semi-transparent area , so as to realize in the second electrode a similar effect as a one-way mirror for limited light transmission control. a first electrode which is a transparent electrode; a second electrode which is an opaque electrode; and an organic layer sandwiched between the first electrode and the second electrode , wherein the organic layer spontaneously emits light when a voltage difference is applied between the first electrode and the second electrode , wherein the second electrode has a semi-transparent area configured to partially reflect and partially transmit the light transmitted through the display screen and a remaining area configured to totally reflect the incident light transmitted through the display screen , the semi-transparent area is disposed corresponding to the light sensing unit and the remaining area is an area of the second electrode except for the semi-transparent area , so as to realize in the second electrode a similar effect as a one-way mirror for limited light transmission control. <EOS>