Display device and control method for display device

Abstract

A display device comprising: a reference value storage unit (23) that stores a reference value for a color region, said value being the result of measurement by a reference color sensor of a primary color displayed in a display unit (40); a difference calculation unit (32) that calculates the difference between a measurement value for a color region, said value being the result of measurement by a user of the display device of a primary color displayed in the display unit, using a color sensor used for display device calibration, and a reference value for the color region stored in the reference value storage unit; and an output unit (35) that outputs a warning indicating a color sensor error to the user, when the difference calculated by the difference calculation unit is a pre-set permissible value or greater, during calibration by the user.

Description

technical field [0001] The present invention relates to a display device having a device that detects the chromaticity and brightness of an image displayed on a display unit of the display device using an external sensor and corrects the chromaticity and brightness, and a control method of the display device. Background technique [0002] A simple color sensor (hereinafter, referred to as a simple sensor) is exclusively used as a sensor for detecting the chromaticity and brightness of an image displayed on the display unit for calibrating the display device. The simple sensor is an important component that determines the performance of the display device. [0003] Therefore, it is desirable to warn the user that the colorimetric error in the measured chromaticity and luminance becomes more than constant or changes due to individual differences, aging, etc. of the simple sensor. [0004] However, for example, when displaying a reference color (such as three primary colors R,...

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Problems solved by technology

[0004] However, for example, when a reference color (such as three primary colors R, G, and B) is displayed on a display device, and the displayed color is measured by a simple sensor, even if the output of the simple sensor greatly differs from the preset reference value (for example, the X, Y and Z values ​​stipulated in the XYZ colorimetric system of CIE1931), and it is impossible to judge whether the cause is the display error of the display device or the color measurement error of the simple sensor

[0005] This is because the reliability of the display device and simple sensors are low

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