Claims
- 1. A display device, comprising,
a memory which stores a first correction value regarding light emission with first luminance of pixels of a field emission display panel and a second correction value regarding light emission with second luminance of pixels of the field emission display panel, the second luminance being more than the first luminance; and a correcting circuit which corrects a video signal inputted thereto by using the first and second correction values read from the memory, wherein an image is displayed on the field emission display panel using the video signal corrected by the correcting circuit.
- 2. A display device, comprising:
a high-voltage power supply circuit; a field emission display panel to which a voltage is supplied from the high-voltage power supply circuit; a first signal generator to generate a signal to emit light with first luminance from pixels of the field emission display panel; a second signal generator to generate a signal to emit light with second luminance from pixels of the field emission display panel, the second luminance being more than the first luminance; a current measuring circuit which detects a first current flowing from the high-voltage power supply circuit when the signal from the first signal generator is supplied and detecting a second current flowing from the high-voltage power supply circuit when the signal from the second signal generator is supplied; a converter which converts a first current value detected by the current measuring circuit into first digital data and converts a second current value detected by the current measuring circuit into second digital data; a first computing unit which compares the first digital data with a first reference value to output a first correction value and compares the second digital data with a second reference value to output a second correction value; a memory which stores the first and second correction values; a second computing unit to compute a video signal inputted thereto and the first correction value read from the memory; and a third computing unit to compute an output from the second computing unit and the second correction value read from the memory, wherein an output from the third computing unit is fed as an input signal to a data driver electrically connected to the field emission display panel and is displayed thereon.
- 3. A display device according to claim 2, wherein the second computing unit is an adder.
- 4. A display device according to claim 1, wherein:
the video signal is a digital video signal quantized in a unit of N bits (N is an integer equal to or more than one); and the first collection value is a digital value including M bits (M is an integer equal to or more than N/2).
- 5. A display device according to claim 2, wherein:
the video signal is a digital video signal quantized in a unit of N bits (N is an integer equal to or more than one); and the first collection value is a digital value including M bits (M is an integer equal to or more than N/2).
- 6. A display device according to claim 3, wherein:
the video signal is a digital video signal quantized in a unit of N bits (N is an integer equal to or more than one); and the first collection value is a digital value including M bits (M is an integer equal to or more than N/2).
- 7. A display device according to claim 1, wherein the second collection value includes at most two bits.
- 8. A display device according to claim 2, wherein the second collection value includes at most two bits.
- 9. A display device according to claim 3, wherein the second collection value includes at most two bits.
- 10. A display device according to claim 4, wherein the second collection value includes at most two bits.
- 11. A display device, comprising;
a panel including a plurality of display pixels; a memory which stores a first correction value regarding light emission with first luminance of pixels of the panel and a second correction value regarding light emission with second luminance of pixels of the panel, the second luminance being more than the first luminance; and a correcting circuit which corrects a video signal inputted thereto by using the first and second correction values read from the memory, wherein an image is displayed on the panel by using the signal corrected by the correcting circuit.
- 12. A display device according to claim 11, wherein the display pixels comprise at least an insulator layer and a phosphor layer arranged between electrodes.
- 13. A displaying method comprising the steps of:
storing into a memory a first correction value regarding light emission with first luminance of pixels of a field emission display panel and a second correction value regarding light emission with second luminance of pixels of the field emission display panel, the second luminance being more than the first luminance; and correcting a video signal inputted thereto by using the first and second correction values read from the memory, wherein an image is displayed on the field emission display panel using the corrected video signal.
Priority Claims (1)
Number |
Date |
Country |
Kind |
2003-170186 |
Jun 2003 |
JP |
|
CROSS-REFERENCE TO RELATED APPLICAITON
[0001] This invention relates to a patent application Ser. No. ______ entitled “A DISPLAY DEVICE HAVING A CIRCUIT PROTECTION FUNCTION” filed by Watanabe et al. on ______ claiming foreign priority under 35 U.S.C. Section 119 of Japanese Patent Application No. 2003-170182.