FIELD-SEQUENTIAL COLOR MODE TRANSITIONS
First Claim
Patent Images
1. A reflective display device, comprising:
- a front light including light sources having a first range of spectral emissions and a second range of spectral emissions;
a reflective display including a first plurality of reflective sub-pixels having a first spectral reflectance range, a second plurality of reflective sub-pixels having a second spectral reflectance range and a third plurality of reflective sub-pixels having a third spectral reflectance range, each of the first, second and third spectral reflectance ranges overlapping the first range of spectral emissions and the second range of spectral emissions;
a sensor system including an ambient light sensor; and
a control system configured to;
receive ambient light data from the ambient light sensor;
select, based at least in part on the ambient light data, a current operational mode from a plurality of operational modes, the plurality of operational modes including at least one field sequential color (FSC) operational mode; and
control the front light and the reflective display according to the current operational mode.
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Abstract
This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for selecting an operational mode of a reflective display device from a plurality of operational modes that include at least one field-sequential color mode. The operational mode may be selected based, at least in part, on ambient light data. The ambient light data may include ambient light intensity data, ambient light spectrum data and/or ambient light direction data. The operational mode may be selected based, at least in part, on other criteria, such as display application type and/or battery state data.
133 Citations
29 Claims
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1. A reflective display device, comprising:
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a front light including light sources having a first range of spectral emissions and a second range of spectral emissions; a reflective display including a first plurality of reflective sub-pixels having a first spectral reflectance range, a second plurality of reflective sub-pixels having a second spectral reflectance range and a third plurality of reflective sub-pixels having a third spectral reflectance range, each of the first, second and third spectral reflectance ranges overlapping the first range of spectral emissions and the second range of spectral emissions; a sensor system including an ambient light sensor; and a control system configured to; receive ambient light data from the ambient light sensor; select, based at least in part on the ambient light data, a current operational mode from a plurality of operational modes, the plurality of operational modes including at least one field sequential color (FSC) operational mode; and control the front light and the reflective display according to the current operational mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A reflective display device, comprising:
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front light means including light sources of a first range of spectral emissions and a second range of spectral emissions; reflective display means including a first plurality of reflective sub-pixels having a first spectral reflectance range, a second plurality of reflective sub-pixels having a second spectral reflectance range and a third plurality of reflective sub-pixels having a third spectral reflectance range, each of the first, second and third spectral reflectance ranges overlapping the first range of spectral emissions and a the second range of spectral emissions; ambient light sensor means; and control means for; receiving ambient light data from the ambient light sensor means; selecting, based at least in part on the ambient light data, a current operational mode from a plurality of operational modes, the plurality of operational modes including at least one field sequential color (FSC) operational mode; and controlling the front light means and the reflective display means according to the current operational mode. - View Dependent Claims (19, 20, 21, 22)
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23. A method of operating a reflective display device, comprising:
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receiving ambient light data, the ambient light data including ambient light intensity data; selecting, from a plurality of operational modes and based at least in part on the ambient light data, a current operational mode for a reflective display and a front light, the plurality of operational modes including at least one field sequential color (FSC) operational mode and an operational mode for high ambient light intensity level conditions in which the front light is switched off and the reflective display is operational; and controlling the front light and the reflective display according to the current operational mode. - View Dependent Claims (24, 25, 26, 27, 28, 29)
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Specification