3D display apparatus and dynamic grating
A 3D display apparatus is provided, which comprises: a display, a camera configured to track human-eye position information of human eyes, and a processor electrically connected with the camera and configured to generate a control signal according to the human-eye position information. Preferably, the display comprises a dynamic grating, which is electrically connected with the processor and configured to, according to the control signal, control bright and dark stripes of the dynamic grating to change in position adaptively according to positions of human eyes. Thereby, the 3D display apparatus of the present disclosure utilizes the camera to track human-eye position information and then utilizes the control unit to change positions of bright and dark stripes of the grating according to the human-eye position information so as to adapt to different observing positions of the user's two eyes, thus achieving a 3D image effect.
1. A three-dimensional (3D) display apparatus, comprising:
a display;
a camera, disposed on a front end surface of the display to track human-eye position information of human eyes; and
a processor electrically connected to the camera, being configured to generate a control signal according to the human-eye position information;
wherein the display comprises a dynamic grating electrically connected to the processor, the dynamic grating comprises a first substrate, an electrolyte layer, an electrochromic layer and a second substrate arranged in this order, the first substrate, the electrolyte layer and the second substrate transmit light incident thereon, the first substrate is formed with a first conductive layer on a surface thereof, the second substrate is formed with a second conductive layer on a surface thereof, the second conductive layer comprises a plurality of second electrodes and black insulation bars disposed between adjacent ones of the second electrodes, the electrochromic layer comprises a plurality of identical electrochromic sheets arranged at equal intervals and light-transmitting clearances between adjacent ones of the electrochromic sheets, the second electrodes make contact with the electrochromic sheets in one-to-one correspondence, the dynamic grating further comprises a control unit, the control unit is configured to control ON/OFF of a voltage applied to the electrochromic sheet between the first conductive layer and each of the second electrodes according to the control signal so that bright and dark stripes of the grating change in position adaptively according to different observing positions of the user's two eyes, and then the electrochromic sheets not applied with the voltage is colored by ions provided by the electrolyte layer to present dark stripes that are opaque while the electrochromic sheets applied with the voltage is decolored by ions provided by the electrolyte layer to present bright stripes that are light transmissive.
2. The 3D display apparatus of claim 1 , wherein the control unit is configured to control ON/OFF of the voltage applied to the electrochromic sheet between each of the second electrodes and the first conductive layer independently.
3. The 3D display apparatus of claim 1 , wherein the plurality of second electrodes arranged at equal intervals include first groups of second electrodes and second groups of second electrodes arranged alternately, each of the first groups of second electrodes includes N (where N≧2, and N is a natural number) second electrodes, each of the second groups of second electrodes includes M (where M≧2, and M is a natural number) second electrodes, all the 1 st second electrodes in the first groups of second electrodes are electrically connected to a same output terminal of the control unit, all the 2 nd second electrodes in the first groups of second electrodes are electrically connected to a same output terminal of the control unit, . . . , and all the N th second electrodes in the first groups of second electrodes are electrically connected to a same output terminal of the control unit, all the 1 st second electrodes in the second groups of second electrodes are electrically connected to a same output terminal of the control unit, all the 2 nd second electrodes in the second groups of second electrodes are electrically connected to a same output terminal of the control unit, . . . , and all the M th second electrodes in the second groups of second electrodes are electrically connected to a same output terminal of the control unit.
4. The 3D display apparatus of claim 1 , wherein each of the electrochromic sheets has a width of a, and the light-transmissive clearance between any two adjacent electrochromic sheets has a width of b, where a≧5b.
5. The 3D display apparatus of claim 1 , wherein each of the electrochromic sheets comprises: a printable electrochromic ink, or an electrochromic thin film, or a piece of electrochromic glass, or an electrically-controlled light-transmissive thin film.
6. The 3D display apparatus of claim 1 , wherein the electrolyte layer comprises a printable electrolyte ink.
7. The 3D display apparatus of claim 1 , wherein the first conductive layer comprises
a printable transparent conductive ink, or a conductive plastic thin film, or a piece of indium tin oxide (ITO) conductive glass;
each of the second electrodes comprises a printable transparent conductive ink, or a conductive plastic thin film, or a piece of ITO conductive glass.
8. A dynamic grating, used in a three-dimensional (3D) display apparatus, comprising: a first substrate, an electrolyte layer, an electrochromic layer and a second substrate arranged in this order, the first substrate, the electrolyte layer and the second substrate transmit light incident thereon, the first substrate is formed with a first conductive layer on a surface thereof, the second substrate is formed with a second conductive layer on a surface thereof, the second conductive layer comprises a plurality of second electrodes and black insulation bars disposed between adjacent ones of the second electrodes, the electrochromic layer comprises a plurality of identical electrochromic sheets arranged at equal intervals and light-transmitting clearances between adjacent ones of the electrochromic sheets, the second electrodes make contact with the electrochromic sheets in one-to-one correspondence, the dynamic grating further comprises a control unit, the control unit is configured to control ON/OFF of a voltage applied to the electrochromic sheet between the first conductive layer and each of the second electrodes according to a control signal so that bright and dark stripes of the grating change in position adaptively according to different observing positions of an user's two eyes, and then the electrochromic sheets not applied with the voltage is colored by ions provided by the electrolyte layer to present dark stripes that are opaque while the electrochromic sheets applied with the voltage is decolored by ions provided by the electrolyte layer to present bright stripes that are light transmissive.
9. The dynamic grating of claim 8 , wherein the control unit is configured to control ON/OFF of the voltage applied to the electrochromic sheet between each of the second electrodes and the first conductive layer independently.
10. The dynamic grating of claim 8 , wherein the plurality of second electrodes arranged at equal intervals include first groups of second electrodes and second groups of second electrodes arranged alternately, each of the first groups of second electrodes includes N (where N≧2, and N is a natural number) second electrodes, each of the second groups of second electrodes includes M (where M≧2, and M is a natural number) second electrodes, all the 1 st second electrodes in the first groups of second electrodes are electrically connected to a same output terminal of the control unit, all the 2 nd second electrodes in the first groups of second electrodes are electrically connected to a same output terminal of the control unit, . . . , and all the N th second electrodes in the first groups of second electrodes are electrically connected to a same output terminal of the control unit, all the 1 st second electrodes in the second groups of second electrodes are electrically connected to a same output terminal of the control unit, all the 2 nd second electrodes in the second groups of second electrodes are electrically connected to a same output terminal of the control unit, . . . , and all the M th second electrodes in the second groups of second electrodes are electrically connected to a same output terminal of the control unit.
11. The dynamic grating of claim 8 , wherein each of the electrochromic sheets has a width of a, and the light-transmissive clearance between any two adjacent electrochromic sheets has a width of b, where a≧5b.
12. The dynamic grating of claim 8 , wherein each of the electrochromic sheets comprises: a printable electrochromic ink, or an electrochromic thin film, or a piece of electrochromic glass, or an electrically-controlled light-transmissive thin film.
13. The dynamic grating of claim 8 , wherein the electrolyte layer comprises a printable electrolyte ink.
14. The dynamic grating of claim 8 , wherein the first conductive layer comprises a printable transparent conductive ink, or a conductive plastic thin film, or a piece of indium tin oxide (ITO) conductive glass;
each of the second electrodes comprises a printable transparent conductive ink, or a conductive plastic thin film, or a piece of ITO conductive glass.