Display device and electronic apparatus
View Patent ↗A display device includes a pixel portion including a plurality of pixels; a display switching function portion that displays an image based on light emitted from the pixel portion, and is capable of switching a three-dimensional display and a two-dimensional display of the image; and a sensor portion that detects whether or not an object comes into contact with or approaches.
1. A display device comprising:
a pixel portion including a plurality of pixels;
a display switching function portion configured to display an image based on light emitted from the pixel portion, the display switching function portion is capable of switching between a three-dimensional display of the image and a two-dimensional display of the image; and
a sensor portion configured to detect whether or not an object comes into contact with the sensor portion or approaches the sensor portion,
wherein:
the pixel portion includes an organic electroluminescent layer and a common electrode in this order above a plurality of pixel electrodes,
the display switching function portion includes a function layer and a driving electrode in this order above a counter electrode, the function layer allows an emission angle or an emission area of a light beam to vary in response to an applied voltage, and
the sensor portion includes a detection electrode above the driving electrode, a capacitative element being between the driving electrode and the detection electrode,
a driving circuit is configured to output a sensor driving signal to the driving electrode during the three-dimensional display and during the two-dimensional display, the driving circuit is configured to output a 3D display driving signal to the driving electrode during the three-dimensional display at a pulse width that is longer than a pulse width of the sensor driving signal and to output a 2D display driving signal to the driving electrode during the two-dimensional display at a pulse width that is longer than the pulse width of the sensor driving signal.
2. The display device according to claim 1 ,
wherein the display switching function portion is configured by any one of a liquid crystal lens, a liquid lens, and a barrier parallax.
3. The display device according to claim 2 ,
wherein the sensor portion is an electrostatic capacitance type touch sensor.
4. The display device according to claim 1 ,
wherein the display switching function portion and the sensor portion are provided in this order from the pixel portion side.
5. The display device according to claim 1 ,
wherein the pixel portion is sealed between a first substrate and a second substrate,
the counter electrode is provided above the second substrate with a third substrate interposed therebetween, and
a fourth substrate is provided between the driving electrode for a sensor and the detection electrode.
6. The display device according to claim 1 ,
wherein the pixel portion is sealed between a first substrate and a second substrate,
the counter electrode is provided directly on the second substrate, and
a fourth substrate is provided between the driving electrode for a sensor and the detection electrode.
7. The display device according to claim 1 ,
the pixel portion and a protective layer are formed in this order above a first substrate,
the counter electrode is provided on the protective layer, and
a fourth substrate is provided between the driving electrode.
8. The display device according to claim 1 ,
wherein the common electrode in the pixel portion also serves as the counter electrode in the display switching function portion.
9. The display device according to claim 1 ,
wherein the common electrode in the pixel portion also serves as the counter electrode in the display switching function portion.
10. The display device according to claim 9 ,
the pixel portion is provided on a first substrate,
the function layer is provided on the common electrode of the pixel portion, and
a fourth substrate is provided between the driving electrode.
11. The display device according to claim 1 ,
wherein the driving electrode includes one or a plurality of strip-shaped driving electrodes,
the detection electrode includes one or a plurality of strip-shaped detection electrodes that extend in a direction intersecting the strip-shaped driving electrodes.
12. The display device according to claim 1 ,
wherein the display switching function portion is a liquid crystal lens, and
a liquid crystal layer in which a refraction index varies in response to an applied voltage is provided as the function layer.
13. The display device according to claim 1 ,
wherein the display switching function portion is a liquid lens, and
a polar liquid layer and a nonpolar liquid layer in which a shape of an interface therebetween varies in response to an applied voltage are provided as the function layer.
14. The display device according to claim 1 ,
wherein the display switching function portion is a liquid crystal barrier, and
a liquid crystal layer, which is capable of switching transmission and interception of a selective area in response to an applied voltage, is provided as the function layer.
15. The display device according to claim 1 ,
a detection circuit configured to perform an object detection process based on a detection signal obtained from the detection electrode, the sensor driving signal being transferred onto the detection electrode to become the detection signal.
16. The display device according to claim 1 ,
the plurality of pixels is to be driven by the 2D display driving signal during the two-dimensional display and by the 3D display driving signal during the three-dimensional display.
17. An electronic apparatus comprising:
the display device according to claim 1 .