Method for displaying luminance compensation of display screen and system thereof

Abstract

The invention provides a method for displaying luminance compensation of a display screen and a system thereof. The display screen is divided into a plurality of displaying regions, and a specific position in each displaying region is a sampling region; and the system comprises a sampling device for collecting luminance values of the sampling regions, a compensating device for providing specific compensating current for the displaying regions respectively and for obtaining corresponding compensating luminance values by controlling the time of compensating current, and a compensation control device for controlling the compensating device to compensate luminance of pixel points in different displaying regions respectively according to the received luminance values of the sampling regions obtained by the sampling device, thus leading to uniform displaying luminance of the display screen.

Description

technical field [0001] The invention relates to a display brightness compensation method and a system thereof, in particular to a display brightness compensation method and a system for large-sized OLED display screens. Background technique [0002] OLED (Organic Light Emitting Diode, organic light emitting diode in Chinese) display has received widespread attention due to its advantages such as active light emission, high brightness, high contrast, light and thin, large viewing angle and fast response speed. If the display has any flaws, such as bright spots, dark spots, uneven brightness, etc., it will degrade the picture quality of the display. Uneven brightness will cause distortion when viewing. At present, the problem of uneven brightness in OLED panels has seriously affected its competitiveness in the display market. For this problem of brightness non-uniformity, many researchers have taken a series of measures from the process, such as many researchers have propose...

AI Technical Summary

Problems solved by technology

However, this method is only possible for small-size screens, and for medium-sized or large-screen displays, the point-by-point detection method is impractical

This is because when the screen is relatively large, the number of pixels is too large, and the point-by-point detection method needs to consume a lot of hardware resources, and the manufacturing cost will be extremely high.

In addition, because the resolution capability of the luminance meter is limited, it is difficult to use the point-by-point detection method of the luminance meter to detect brightness in practical applications.

In this regard, some researchers have proposed the idea of ​​detecting pixel power point by point, which undoubtedly requires a greater workload, and for information display, the displayed information is for people to see. For the human visual system, The useful optical radiation power is only a part of the total power, so the idea of ​​using power detection instead of brightness detection itself is inaccurate

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