Illumination device and electronic device including the same

An electronic device comprising:

• an illumination device comprising:
• a display panel comprising:
• a first surface on which an image is displayed;
• a second surface opposite to the first surface;
• display pixels interposed between the first surface and the second surface;
• and
• a transmitting window interposed between the first surface and the second surface;
• a light source disposed on a side of the second surface of the display panel, and emitting light toward the second surface;
• a light transmitter interposed between the light source and the display panel, and transmitting the emitted light to the transmitting window, the transmitted light being incident on the second surface of the display panel and being transmitted through the transmitting window toward the first surface of the display panel;
• and
• a diffuser diffusing the light transmitted through the transmitting window, the diffused light being irradiated onto a front surface of a target object;
• a sensor configured to receive light that is reflected from the target object comprising the front surface onto which the diffused light is irradiated;
• and
• a processor configured to obtain information regarding the target object, from the received light.

An illumination device comprising:

• a display panel comprising:
• a first surface on which an image is displayed;
• a second surface opposite to the first surface;
• display pixels interposed between the first surface and the second surface;
• and
• transmitting windows interposed between the first surface and the second surface;
• a light source comprising light-emitting elements emitting light toward the second surface;
• and
• a light transmitter interposed between the light source and the display panel, and comprising meta-lenses disposed at positions respectively corresponding to positions of the light-emitting elements, each of the meta-lenses comprising nano-structures transmitting the emitted light to the transmitting windows, and the transmitted light being incident on the second surface of the display panel and being transmitted through the transmitting windows toward the first surface of the display panel.