AMOLED brightness compensation method and AMOLED driving system

A technology of brightness compensation and drive system, which is applied in the direction of instruments and static indicators, etc. It can solve the problems of more and more serious color shift, organic light-emitting diode brightness attenuation, organic light-emitting diode attenuation speed, etc., to improve the brightness of the display. , Maintain the effect of luminous brightness and color gamut

Active Publication Date: 2016-01-27
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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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 brightness compensation method and an AMOLED driving system. A compensation unit (4) comprising first, second and third brightness sensors (42, 43, 44) and a compensation IC (41) and a test pixel unit (5) comprising red, green and blue test pixels (51, 52, 53) are additionally arranged. Brightness of the red, green and blue test pixels (51, 52, 53) at the initial moment and the compensation moment is respectively sensed by the first, second and third brightness sensors (42, 43, 44) so that compensation voltage respectively required by red, green and blue organic light-emitting diodes can be calculated by the compensation IC (41), then brightness compensation is respectively performed on the red, green and blue organic light-emitting diodes, and thus reduction of displayer brightness caused by brightness attenuation of the organic light-emitting diodes and color cast caused by difference of brightness attenuation speed of different colors of organic light-emitting diodes can be improved and luminescence brightness and color gamut of the AMOLED can be maintained.

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 devices (Liquid Crystal Display, LCD) and organic light emitting diode display devices (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 two categories: passive matrix O...

Claims

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Application Information

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