Liquid crystal display device, backlight used for same display device, method for driving same backlight and method for manufacturing same backlight
View Patent ↗A Liquid Crystal Display (LCD), a backlight used for the LCD and a method for producing the LCD and the backlight are provided which are capable of inhibiting an increase in component counts and in assembling processes and of reducing them, thereby achieving low costs. A display image is obtained by arranging a backlight section being able to perform scanning as a single unit in a manner that it positionally matches a liquid crystal displaying section. The backlight section is provided with a plurality of scanning electrodes and light emitting layers each providing a different luminescent color, and being spatially separated from each other on a principal face of the backlight and scanning is performed on a plurality of light emitting layers providing a different luminescent color.
1. A system, comprising:
a group of scanning electrodes disposed on a first glass substrate of a backlight, wherein the group of scanning electrodes are configured to receive a direct current voltage; and
a group of common electrodes disposed on a second glass substrate of the backlight, wherein the group of common electrodes are configured to generate a light emitting discharge responsive to application of an alternating current voltage.
2. The system of claim 1 , wherein the alternating current voltage comprises at least one of a sine waveform voltage or a rectangular waveform voltage.
3. The system of claim 1 , wherein the group of scanning electrodes and the group of common electrodes are further configured to cause the light emitting discharge in a gas between the first glass substrate and the second glass substrate in response to the alternating current voltage exceeding a threshold voltage.
4. The system of claim 1 , wherein the group of scanning electrodes and the groups of common electrodes are further configured to vary an intensity of light produced by the light emitting discharge in response to a variation of the direct current voltage.
5. The system of claim 1 , wherein the group of scanning electrodes and the group of common electrodes are further configured to vary a luminance of light produced by the light-emitting discharge in response to a variation of a frequency of the alternating current voltage.
6. The system of claim 1 , further comprising a transparent dielectric layer disposed on the first glass substrate.
7. The system of claim 1 , further comprising a white dielectric layer disposed on the second glass substrate.
8. The system of claim 1 , wherein the group of scanning electrodes comprise belt-shaped electrodes.
9. The system of claim 1 , further comprising an auxiliary discharging electrode configured to continuously discharge during scanning of the group of scanning electrodes.
10. The system of claim 9 , wherein a first area of discharge associated with the auxiliary discharging electrode is smaller than a second area of discharge associated with a scanning electrode of the group of scanning electrodes.
11. The system of claim 9 , further comprising a fluorescent material disposed on a first region of the second glass substrate corresponding to the group of scanning electrodes, wherein a second region of the second glass substrate corresponding to the auxiliary discharging electrode is free of fluorescent material.
12. The system of claim 9 , further comprising a partition wall disposed between a first light emitting region corresponding to the auxiliary discharging electrode and a second light emitting region corresponding to the group of scanning electrodes.
13. A method, comprising:
applying a direct current voltage to a group of scanning electrodes disposed on a first glass substrate of a backlight; and
applying an alternating current voltage to generate a light emitting discharge to a group of common electrodes disposed on a second glass substrate of the backlight.
14. The method of claim 13 , wherein the applying the alternating current voltage comprises applying a sine waveform voltage or a rectangular waveform voltage.
15. The method of claim 13 , wherein the applying the direct current voltage and the applying the alternating current voltage facilitate a discharge in a gas between the first glass substrate and the second glass substrate.
16. The method of claim 15 , further comprising varying an intensity of light emitted by the discharge in response to varying the direct current voltage.
17. The method of claim 15 , further comprising varying a luminance of light emitted by the discharge in response to varying a frequency of the alternating current voltage.
18. The method of claim 13 , wherein the applying the direct current voltage comprises applying the direct current voltage to a group of belt-shaped scanning electrodes.
19. A system, comprising
means for generating a light emitting discharge responsive to an alternating current voltage applied to a group of common electrodes disposed on a first glass substrate of a backlight; and
means for controlling the light emitting discharge responsive to a direct current voltage applied to a group of scanning electrodes disposed on a second glass substrate of the backlight.
20. The system of claim 19 , wherein the means for controlling comprises means for varying an intensity of light produced by the light emitting discharge responsive to a variation of the direct current voltage.