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Drive controlling circuit of active matrix organic light emitting diodes and adjusting white balancing method

A technology for driving control circuits and light-emitting diodes, applied in electroluminescent light sources, light sources, electric light sources, etc., can solve problems such as poor white balance and inconsistent luminous brightness, and achieve the effect of optimal white balance

Active Publication Date: 2005-10-12
AU OPTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Obviously, the brightness attenuation characteristics of the red, green and blue polymer luminescent materials are not the same, so when the active matrix organic light emitting diode display panel is operated for a long time, there will be inconsistent luminance, resulting in inconsistent white balance. good question

Method used

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  • Drive controlling circuit of active matrix organic light emitting diodes and adjusting white balancing method
  • Drive controlling circuit of active matrix organic light emitting diodes and adjusting white balancing method
  • Drive controlling circuit of active matrix organic light emitting diodes and adjusting white balancing method

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Embodiment Construction

[0023] figure 2 Shown is an active matrix organic light emitting diode pixel circuit diagram. As shown in the figure, the Active Matrix Organic Light Emitting Diode (AMOLED for short) pixel includes: a transistor 210 , a transistor 220 , a capacitor 230 and an OLED 240 . Wherein, the gate of the transistor 210 is connected to the scan line, the drain is connected to the data line, the source is connected to one end of the capacitor 230 and the gate of the transistor 220, the drain of the transistor 220 is connected to the power supply Vdd, and the source is connected to the anode terminal of the organic light emitting diode 240 .

[0024] Its operation method is that when a horizontal scanning signal received by the scanning line scans the pixel, the transistor 210 is turned on to transmit the voltage of the data line to the gate of the transistor 220 to obtain the gate voltage Vg. Generally speaking, the display brightness of the OLED 240 is proportional to the current Id ...

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PUM

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Abstract

A method for adjusting white balance and its organic LED driving control circuit of active matrix includes providing multiple programmable voltage sources to be used as picture element power source of red, green and blue for organic LED display panel of active matrix and utilizing a white balance adjustment circuit to dynamically adjust voltage value of programmable voltage source according to working condition of display panel for achieving white balance purpose of display panel.

Description

technical field [0001] The present invention relates to an active matrix organic light emitting diode (Active Matrix Organic Light Emitting Diode, referred to as AMOLED) drive control circuit, and in particular to an active matrix organic light emitting diode drive control circuit and adjustment method that can dynamically adjust white balance . Background technique [0002] With the development of information technology, various information devices such as computers, mobile phones, personal digital assistants (PDAs) and digital cameras are constantly being introduced. In these information devices, displays have always played a pivotal role, and flat panel displays (FPDs) are gradually becoming popular due to their thinness, light weight and power-saving characteristics. [0003] Among all kinds of flat-panel displays, active matrix organic light-emitting diode displays are very suitable for electronic clocks, mobile phones, personal digital assistants and digital cameras b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/3233H05B33/00
Inventor 李易书
Owner AU OPTRONICS CORP
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