Tunable backlight device, a display device and a method of driving the same
First Claim
1. A tunable backlight device, comprising:
- at least one backlight apparatus with high color gamut and low luminance;
at least one backlight apparatus with low color gamut and high luminance;
a storage, configured to store a library of current feedback coefficients;
a processor configured to receive feedback coefficients from the library of current feedback coefficients, determine a first current feedback coefficient (K1) for the backlight apparatus with high color gamut and low luminance, and a second current feedback coefficient (K2) for the backlight apparatus with low color gamut and high luminance, according to requirements on chromaticity and luminance, wherein the requirements on the chromaticity and luminance for a preset scene are stored in advance;
a backlight driving apparatus configured to supply currents to the backlight apparatus with high color gamut and low luminance and the backlight apparatus with low color gamut and high luminance to enable light emission, based on the first and the second current feedback coefficients from the processor, respectively; and
a light guide plate configured to mix the lights emitted from the backlight apparatus with high color gamut and low luminance and the lights emitted from the backlight apparatus with low color gamut and high luminance;
wherein in response to a total input power being a constant, a sum of the first current feedback coefficient and the second current feedback coefficient is equal to 1.
1 Assignment
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Accused Products
Abstract
The present disclosure provides a tunable backlight device, a display device and method of driving the display device. The tunable backlight device comprises: at least one backlight apparatus with high color gamut and low luminance; at least one backlight apparatus with low color gamut and high luminance; a storage configured to store a library of current feedback coefficients; a current feedback apparatus, configured to determine a first current feedback coefficient (K1) for the backlight apparatus with high color gamut and low luminance and a second current feedback coefficient (K2) for the backlight apparatus with low color gamut and high luminance, according to the requirements, respectively; a backlight driving apparatus configured to supply respective currents to both the backlight apparatuses to emit lights, based on the first and the second current feedback coefficients, respectively; and a light guide plate configured to mix the lights emitted from the both backlight apparatuses.
5 Citations
13 Claims
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1. A tunable backlight device, comprising:
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at least one backlight apparatus with high color gamut and low luminance; at least one backlight apparatus with low color gamut and high luminance; a storage, configured to store a library of current feedback coefficients; a processor configured to receive feedback coefficients from the library of current feedback coefficients, determine a first current feedback coefficient (K1) for the backlight apparatus with high color gamut and low luminance, and a second current feedback coefficient (K2) for the backlight apparatus with low color gamut and high luminance, according to requirements on chromaticity and luminance, wherein the requirements on the chromaticity and luminance for a preset scene are stored in advance; a backlight driving apparatus configured to supply currents to the backlight apparatus with high color gamut and low luminance and the backlight apparatus with low color gamut and high luminance to enable light emission, based on the first and the second current feedback coefficients from the processor, respectively; and a light guide plate configured to mix the lights emitted from the backlight apparatus with high color gamut and low luminance and the lights emitted from the backlight apparatus with low color gamut and high luminance; wherein in response to a total input power being a constant, a sum of the first current feedback coefficient and the second current feedback coefficient is equal to 1. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of driving a tunable backlight device, comprising:
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receiving requirements on chromaticity and luminance; generating a first current feedback coefficient (K1) to a backlight apparatus with high color gamut and low luminance, and a second current feedback coefficient (K2) to a backlight apparatus with low color gamut and high luminance respectively, based on the requirements on chromaticity and luminance; supplying currents to the backlight apparatus with high color gamut and low luminance and the backlight apparatus with low color gamut and high luminance to emit lights, based on the first and the second current feedback coefficients, respectively; and mixing the lights emitted from the backlight apparatus with high color gamut and low luminance and the lights emitted from the backlight apparatus with low color gamut and high luminance by a light guide plate; wherein in response to a total input power being a constant, a sum of the first current feedback coefficient and the second current feedback coefficient is equal to 1.
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13. A method of driving a tunable backlight device, comprising:
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acquiring a preset scene to be displayed; providing a first current feedback coefficient (K1) to a backlight apparatus with high color gamut and low luminance, and second current feedback coefficient (K2) to a backlight apparatus with low color gamut and high luminance respectively, based on the preset scene; supplying respective currents to the backlight apparatus with high color gamut and low luminance and the backlight apparatus with low color gamut and high luminance to emit lights, based on the first and the second current feedback coefficients, respectively; and mixing the lights emitted from the backlight apparatus with high color gamut and low luminance and the lights emitted from the backlight apparatus with low color gamut and high luminance by a light guide plate; wherein in response to a total input power being a constant, a sum of the first current feedback coefficient and the second current feedback coefficient is equal to 1.
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Specification