Method for increasing contrast of OLED display screen

A display and contrast technology, applied in static indicators, color signal processing circuits, instruments, etc., can solve the problems of OLED screen display effect decline and OLED screen impact, and achieve the effect of improving detail display effect and enhancing contrast
CN101794552BInactive Publication Date: 2012-07-04IRICO
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
IRICO
Publication Date
2012-07-04
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for increasing the contrast of an OLED display screen, which comprises: firstly, determining the maximum value of the monochromatic brightness total values of a display signal; secondly, calculating the ratios of the maximum value to the monochromatic brightness reference values of all pixels, and dividing the obtained ratios into four ratio intervals which are divided in advance; thirdly, processing the ratios by using different nonlinear calibration modes according to different intervals; and finally, outputting the processed display signal to the OLED display screen for display. By increasing the brightness of the low-light part of a dark field and the brightness of the high-light part of a bright field, the method of the invention improves the detail display of the OLED display screen and increases image contrast, so that the OLED display screen can clearly display image frames in high light.
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Description

technical field

[0001] The invention relates to a method for enhancing the contrast of an OLED display screen, which is suitable for full-color and monochrome display screens of PMOLED and AMOLED. Background technique

[0002] OLED is Organic Light-Emitting Diode (Organic Light-Emitting Diode), also known as Organic Electroluminescence Display (OELD). Since 2003, this kind of display device has been widely used in MP3 players because of its lightness, lightness, power saving and other characteristics. For DC and mobile phones, which are also digital products, OLED display devices have only been shown in some exhibitions before. The engineering samples of the screen have not yet entered the stage of practical application. However, OLED screens have many incomparable advantages over LCDs, so it has always been favored by people in the industry.

[0003] OLED display technology is different from traditional LCD display methods. It does not require a backlight, and uses very t...

Claims

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