Device for measuring and correcting the luminance of a display

Details Device for measuring and correcting the luminance of a display Device for measuring and correcting the luminance of a display

2007-10-30

2007-10-30

Vu, David H. (Department: 2821)

Electric lamp and discharge devices: systems

Plural power supplies

Plural cathode and/or anode load device

C315S149000, C315S307000

Reexamination Certificate

active

10927080

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.

REFERENCES:
patent: 6836074 (2004-12-01), Nakamura
patent: 6914389 (2005-07-01), Chang et al.
patent: 199 35 458 (2001-02-01), None
patent: 101 38 005 (2003-02-01), None

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