Device for measuring and correcting the luminance of a display
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United States of America Patent
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Oct 30, 2007
Grant Date -
Jul 21, 2005
app pub date -
Aug 27, 2004
filing date -
Aug 27, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
A device for measuring and correcting the luminance of a flat screen display, which can be illuminated from the rear by the light of a backlight, having a backlight control, which adjusts a luminance measured by a sensor to a selectable setpoint value representing the intensity of the light of the backlight. The sensor is arranged in an area of the flat screen display device that is not visible to a viewer, and a swivel is provided to swivel the sensor out, essentially parallel to the display panel, from a standby position to a position for measuring the luminance of a test image that can be displayed on the display panel during a calibration phase. As a result, effects due to aging and/or temperature of the display panel and interfering with the luminance of the display panel are detected and can be largely corrected.
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