Method and apparatus for color-correction of display modules/LEDs of red, green and blue color-correction combinations
AssigneesHybrid Electronics Australia Pty Ltd., Persistent Vision Pty Ltd.
InventorsWalter Henry Berryman, John McRae Badcock
Life of this patent
Estimating the term…
Abstract
Apparatus for color correcting a display module is disclosed. The display module includes a plurality of light emitting elements such as LEDs. The LEDs typically include sources of nominally red, green and blue colors. The apparatus includes a device for activating a light emitting element to emit an uncorrected first color and a device for activating at least one further light emitting element which emits a color other than the first color, to produce a corrected first color. An array of corrected display modules and a method of correcting a color in a display module are also disclosed.
Claims17
A colour display module having spectrally corrected sources of light for use in a display panel having a plurality of like colour display modules, said display module including:
- sources of nominally red, green and blue colours, each source being subject to unwanted spectral variation;
- means associated with the nominally red source for activating the nominally green and blue sources to produce a spectrally corrected red source;
- means associated with the nominally green source for activating nominally red and blue sources to produce a spectrally corrected green source;
- and
- means associated with the nominally blue source for activating the nominally red and green sources to produce a spectrally corrected blue source;
- whereby the range of colours available to be displayed by the spectrally corrected red, green and blue sources substantially does not vary from one module to another notwithstanding the spectral variation of the nominally red, green and blue sources.
A method of correcting a colour display module having sources of nominally red, green and blue colours, each source being subject to unwanted spectral variation, said module being suitable for use in a display panel having a plurality of like colour display modules, said method including the steps of:
- activating the nominally green and blue sources to produce a spectrally corrected red source;
- activating the nominally red and blue sources to produce a spectrally corrected green source, and
- activating the nominally red and green sources to produce a spectrally corrected green source;
- whereby the range of colours available to be displayed by the spectrally corrected red, green and blue sources substantially does not vary from one module to another notwithstanding the spectral variation of the nominally red, green and blue sources.
Dependencies are inferred from the claim text.