Electro-optical device, light receiving device, and electronic apparatus
View Patent ↗An electro-optical device includes a transparent substrate, a PIN type diode formed in the transparent substrate and receiving light introduced through a light receiving side surface of the transparent substrate, and a reflecting portion provided on a surface side opposite to the light receiving side surface of the transparent substrate and for reflecting light passed through the transparent substrate to the PIN type diode.
1. An electro-optical device comprising:
a display panel including a first and a second transparent substrates oppositely disposed;
a lighting unit provided at a downside of the second transparent substrate;
a light receiving element for detecting a luminance of an ambient light incident from an observation surface side of the first transparent substrate side; and
a reflector that is provided at a downside of and opposing the light receiving element, the reflector to:
(1) reflect the ambient light and introduce the ambient light to the light receiving element from the downside of the light receiving element; and
(2) shield the light receiving element from a light of the lighting unit, the lighting unit being provided at a downside of the reflector; and
wherein the reflector shields the light receiving element from substantially all of the light from the lighting unit.
2. The electro-optical device according to claim 1 , wherein the second transparent substrate is an element substrate on which are formed a switching element, a pixel electrode, and the light receiving element.
3. The electro-optical device according to claim 2 , the switching element including a semiconductor layer, the light receiving element being formed by the Same layer as the semiconductor layer.
4. The electro-optical device according to claim 1 , brightness of the lighting unit being controlled by using a detected result of the light receiving element.
5. The electro-optical device according to claim 1 , the light receiving element including a PIN diode, and an I type region of the PIN type diode being masked.
6. The electro-optical device according to claim 1 , the reflector being provided in a frame body that holds the lighting unit.
7. The electro-optical device according to claim 1 , the display panel including an effective display region defined by a light shielding film, the light shielding film having an aperture in which the light receiving element is provided.
8. The electro-optical device according to claim 1 , the light receiving element being provided in a region in which the first and the second tranparent substrate are opposed.
9. The electro-optical device according to claim 1 , the light receiving element being provided on the second transparent substrate, and provided in a region in which the first and the second transparent substrate are not opposed.
10. An electronic apparatus including the electro-optical device according to claim 1 .
11. The electro-optical device according to claim 1 , the light receiving element including a PIN diode.
12. The electro-optical device according to claim 1 , the light receiving element having a first side that faces the first transparent substrate side, and a second side opposing the first side.
13. The electro-optical device according to claim 12 , the reflector opposing the second side of the light receiving element.
14. The electro-optical device according to claim 1 , wherein the reflector is between the light receiving element and the lighting unit.