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US 9,001,406 B2Granted
Reflective display utilizing luminescence
AssigneeHewlett-Packard Development Company, L.P.
InventorsXia Sheng, Gary Gibson, Dick Henze, Zhang-Lin Zhou
Life of this patent
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Abstract
A reflective color display pixel has a top surface for receiving ambient light, and a plurality of sub-pixels including a first sub-pixel. The first sub-pixel has a broadband mirror and a luminescent layer disposed over the broadband mirror. The luminescent layer contains a luminescent material for absorbing a portion of the ambient light and emitting light of a first color, and a light-absorbing material for absorbing light of wavelengths longer than a wavelength of the first color.
Claims13
A reflective color display pixel comprising:
- a top surface for receiving ambient light;
- and
- a plurality of sub-pixels including a first sub-pixel, the first sub-pixel having a broadband mirror and a luminescent layer disposed over the broadband mirror, the luminescent layer containing luminescent material particles fixably disposed within the luminescent layer for absorbing a portion of the ambient light and emitting light of a first color, and light-absorbing material particles fixably disposed within the luminescent layer and being different particles than the luminescent material particles for absorbing light of wavelengths longer than a wavelength of the first color.
A reflective color display comprising:
- a plurality of pixels, each pixel having a top surface for receiving ambient light and at least a first sub-pixel for generating a first color, a second sub-pixel for generating a second color, and a third sub-pixel for generating a third color, the first sub-pixel having a broadband mirror and a luminescent layer disposed over the broadband mirror, the luminescent layer of the first sub-pixel containing luminescent material particles fixably disposed within the luminescent layer for absorbing a portion of the ambient light and emitting light of the first color, and light-absorbing material particles fixably disposed within the luminescent layer and being different particles than the luminescent material particles for absorbing light of wavelengths longer than a wavelength of the first color.
Dependencies are inferred from the claim text.