Display system and electrical appliance
A display system in which the luminance of light-emitting elements in a light-emitting device is adjusted based on information on an environment. A sensor obtains information on an environment as an electrical signal. A CPU converts, based on comparison data set in advance, the information signal into a correction signal for correcting the luminance of EL elements. Upon receiving this correction signal, a voltage changer applies a predetermined corrected potential to the EL elements. Thus, this display system enables control of the luminance of the EL elements.
1. An electrical appliance comprising:
a light-emitting device, the light-emitting device comprising:
an insulating film over a first substrate;
an EL element over the insulating film, the EL element comprising:
a first electrode over the insulating film;
an EL layer over the first electrode; and
a second electrode over the EL layer, and
a second substrate over the EL element,
a sensor obtaining an information signal; and
a CPU controlling a luminance of the EL element based on the information signal,
wherein the information signal is any one of an environment information signal and a living-body information signal.
2. The electrical appliance according to claim 1 , wherein the insulating film is any one of a silicon oxide film, a silicon nitride film, and a silicon oxynitride film.
3. The electrical appliance according to claim 1 , wherein the EL layer comprises a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, and an electron injection layer.
4. The electrical appliance according to claim 1 , further comprising a film over the second electrode.
5. The electrical appliance according to claim 4 , wherein the film is a silicon nitride film.
6. The electrical appliance according to claim 1 , the sensor and the CPU are formed over the first substrate.
7. An electrical appliance comprising:
a light-emitting device, the light-emitting device comprising:
an insulating film over a first substrate;
an EL element over the insulating film, the EL element comprising:
a first electrode over the insulating film;
an EL layer over the first electrode; and
a second electrode over the EL layer, and
a second substrate over the EL element,
a sensor obtaining an information signal; and
a CPU controlling a luminance of the EL element based on the information signal,
wherein the information signal is an environment information signal, and
wherein the first substrate is a plastic substrate.
8. The electrical appliance according to claim 7 , wherein the insulating film is any one of a silicon oxide film, a silicon nitride film, and a silicon oxynitride film.
9. The electrical appliance according to claim 7 , wherein the EL layer comprises a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, and an electron injection layer.
10. The electrical appliance according to claim 7 , further comprising a film over the second electrode.
11. The electrical appliance according to claim 10 , wherein the film is a silicon nitride film.
12. The electrical appliance according to claim 7 , the sensor and the CPU are formed over the first substrate.
13. An electrical appliance comprising:
a first light-emitting device and a second light-emitting device, each of the first light-emitting device and the second light-emitting device comprising:
an insulating film over a first substrate;
an EL element over the insulating film, the EL element comprising:
a first electrode over the insulating film;
an EL layer over the first electrode; and
a second electrode over the EL layer, and
a second substrate over the EL element,
a sensor obtaining an information signal; and
a CPU controlling a luminance of the EL element based on the information signal,
wherein the first light-emitting device forms a first image for right-eye, and
wherein the second light-emitting device forms a second image for left-eye.
14. The electrical appliance according to claim 13 , wherein the information signal is a living-body information signal.
15. The electrical appliance according to claim 13 , wherein the insulating film is any one of a silicon oxide film, a silicon nitride film, and a silicon oxynitride film.
16. The electrical appliance according to claim 13 , wherein the EL layer comprises a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, and an electron injection layer.
17. The electrical appliance according to claim 13 , further comprising a film over the second electrode.
18. The electrical appliance according to claim 17 , wherein the film is a silicon nitride film.
19. The electrical appliance according to claim 13 , the sensor and the CPU are formed over the first substrate.