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Amoled Brightness Compensation Method and Amoled Driving System

A technology of brightness compensation and driving system, applied in instruments, static indicators, etc., can solve the problems of organic light-emitting diode brightness attenuation, more and more serious color shift, AMOLED display device color shift, etc., to maintain luminous brightness and color gamut , Improve the effect of display brightness drop

Active Publication Date: 2018-05-01
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to long-term operation under DC bias, the brightness of the organic light-emitting diode will gradually decay, so as the use time of the organic light-emitting diode increases, the brightness of the AMOLED display device will become lower and lower.
Furthermore, organic light-emitting diodes of different colors have different decay speeds, such as figure 1 As shown, in red (Red, R), green (Green, G), blue (Blue, B) organic light-emitting diodes, blue OLED attenuation is the most obvious, which will lead to AMOLED display device will produce Color shift, and the color shift will become more and more serious with the prolongation of use time

Method used

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  • Amoled Brightness Compensation Method and Amoled Driving System
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  • Amoled Brightness Compensation Method and Amoled Driving System

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Embodiment Construction

[0044] In order to further illustrate the technical means adopted by the present invention and its effects, the following describes in detail in conjunction with preferred embodiments of the present invention and accompanying drawings.

[0045] see figure 2 , the present invention firstly provides a kind of AMOLED brightness compensation method, comprises the following steps:

[0046] Step 1. Provide an AMOLED drive system.

[0047] Please also see image 3 and Figure 4 , the AMOLED drive system includes: a display unit 1, a source drive unit 2 electrically connected to the display unit 1, a gate drive unit 3 electrically connected to the display unit 1, and a source drive unit 3 electrically connected to the display unit 1. The compensation unit 4 electrically connected to the unit 2 and the test pixel unit 5 electrically connected to the source driving unit 2 and the gate driving unit 3 .

[0048] Further, the test pixel unit 5 is arranged outside the display unit 1 , ...

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Abstract

The invention provides an AMOLED luminance compensation method and an AMOLED drive system, additionally provided with a compensation unit (4) comprising first, second, and third luminance sensors (42, 43, 44) and a compensation IC (41), and comprising The test pixel unit (5) of red, green, and blue test pixels (51, 52, 53) senses red, green, and the brightness of the blue test pixel (51, 52, 53) at the initial moment and the compensation moment, and then the compensation voltage required by the red, green, and blue organic light-emitting diodes can be calculated by the compensation IC (41), and then the red , green, and blue organic light-emitting diodes perform brightness compensation separately, which can improve the color shift caused by the decrease in display brightness caused by the brightness attenuation of organic light-emitting diodes and the different brightness attenuation speeds of organic light-emitting diodes of different colors, and maintain the luminous brightness of AMOLED and color gamut.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an AMOLED brightness compensation method and an AMOLED driving system. Background technique [0002] Flat panel display devices have many advantages such as thin body, power saving, and no radiation, and have been widely used. Existing flat panel display devices mainly include liquid crystal display (Liquid Crystal Display, LCD) and organic light emitting diode display (Organic Light Emitting Display, OLED). [0003] Organic light-emitting diode display devices have many advantages such as self-illumination, low driving voltage, high luminous efficiency, short response time, high definition and contrast, nearly 180° viewing angle, wide operating temperature range, flexible display and large-area full-color display, etc. , is recognized by the industry as the most promising display device. OLED display devices can be divided into passive matrix OLED (Passive Matrix OLED, PMOLED...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/3225
Inventor 徐向阳
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD