Method of adjusting the colors of a polychrome plasma panel and a plasma panel using such a method
First Claim
1. A glow discharge panel comprising:
- means for providing a plurality of red, blue, and green color sources on said panel;
means for providing a first alternating frequency holding signal to all of said red color sources;
means for providing a second alternating frequency holding signal to all of said blue color sources;
means for providing a third alternating frequency holding signal to all of said green color sources;
means for adjusting the frequency of at least two of said alternating frequency holding signals; and
wherein each of said color sources comprises two plates, with electrodes on at least one plate, and an ionizable gas between the plates which ionizable gas emits ultra-violet radiation in response to the gas being ionized by signals, including said holding signal, being applied to said electrodes, and further comprising luminescent material on one of said plates and which emits the colored light when said emitted ultra-violet radiation is received thereon from said ionized gas;
whereby in accordance with the adjusted frequencies of said holding signals, a desired color balance of said panel is achieved.
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Abstract
A method of adjusting the colors of a polychrome plasma panel is provided, including a plurality of elementary image points, each point being formed by several zones covered with luminophores of different colors, each of these zones corresponding to the intersection of electrodes for applying control signals and more particularly a holding signal to each zone during operation, which method consists in applying to the different zones of each elementary image point a respective holding signal at an adjustable frequency, identical for all the luminophores of the same type of all the image points of the panel, and the colors of the panel are adjusted by adjusting the frequency of the different holding signals used.
25 Citations
6 Claims
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1. A glow discharge panel comprising:
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means for providing a plurality of red, blue, and green color sources on said panel; means for providing a first alternating frequency holding signal to all of said red color sources; means for providing a second alternating frequency holding signal to all of said blue color sources; means for providing a third alternating frequency holding signal to all of said green color sources; means for adjusting the frequency of at least two of said alternating frequency holding signals; and wherein each of said color sources comprises two plates, with electrodes on at least one plate, and an ionizable gas between the plates which ionizable gas emits ultra-violet radiation in response to the gas being ionized by signals, including said holding signal, being applied to said electrodes, and further comprising luminescent material on one of said plates and which emits the colored light when said emitted ultra-violet radiation is received thereon from said ionized gas; whereby in accordance with the adjusted frequencies of said holding signals, a desired color balance of said panel is achieved. - View Dependent Claims (3, 4, 5, 6)
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2. A glow discharge panel comprising:
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means for providing a plurality of different color sources on said panel; means for providing separate and different alternating frequency color signals to all of said different color sources of the same color; means for adjusting the frequency of at least one of said alternating frequency holding signals; and wherein each of said color sources comprises two plates, with electrodes on at least one plate, and an ionizable gas between the plates which ionizable gas emits ultra-violet radiation in response to the gas being ionized by signals, including said holding signal, being applied to said electrodes, and further comprising luminescent material on one of said plates and which emits the colored light when said emitted ultra-violet radiation is received thereon from said ionized gas; whereby in accordance with the adjusted frequency of said holding signal a desired colored balance of said panel is achieved.
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Specification