LCD-CRT hybrid image tube
First Claim
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1. An LCD-CRT hybrid image tube, said tube comprising:
- a screen comprised of a plurality of pixels, each of said pixels being made of a phosphor dot triplet, a means for exciting said phosphor dots, a first radiation source for emitting decay stimulation spectra toward said screen;
an LCD array positioned between said first source and said screen, said array being suitable for receiving video signals from externally and, in response thereto, transmitting decay patterns to said phosphor dots and a re-imaging lens, said re-imaging lens being placed between said array and said screen for re-imaging the decay patterns on said screen, thereby controlling the intensity of the visible light output of said dots.
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Abstract
An LCD projection system, located within a standard color CRT, is used to oject toward the screen decay stimulation patterns that vary dynamically from one frame to the next for each pixel based on the video signals received from external sources. This controls the output light intensity of the phosphors that are excited by a single electron gun. This system eliminates the three-electron-gun configuration of the standard CRT as well as the requirement of a shadow mask. What results is a CRT that is more rugged, easier to manufacture and that produces brighter and sharper images on its screen.
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Citations
9 Claims
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1. An LCD-CRT hybrid image tube, said tube comprising:
- a screen comprised of a plurality of pixels, each of said pixels being made of a phosphor dot triplet, a means for exciting said phosphor dots, a first radiation source for emitting decay stimulation spectra toward said screen;
an LCD array positioned between said first source and said screen, said array being suitable for receiving video signals from externally and, in response thereto, transmitting decay patterns to said phosphor dots and a re-imaging lens, said re-imaging lens being placed between said array and said screen for re-imaging the decay patterns on said screen, thereby controlling the intensity of the visible light output of said dots. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
- a screen comprised of a plurality of pixels, each of said pixels being made of a phosphor dot triplet, a means for exciting said phosphor dots, a first radiation source for emitting decay stimulation spectra toward said screen;
Specification