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Active matrix organic light emitting diode (OLED) and driving method thereof

A light-emitting display and active matrix technology, applied to static indicators, instruments, etc., can solve problems such as changes in brightness and color coordinates, improve display problems, and achieve temperature compensation effects

Active Publication Date: 2016-04-06
CHENGDU VISTAR OPTEOLECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide an active matrix organic light emitting display and its driving method, so as to solve the problem that the brightness and color coordinates of the existing active matrix organic light emitting display change due to the temperature change of the screen body

Method used

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  • Active matrix organic light emitting diode (OLED) and driving method thereof
  • Active matrix organic light emitting diode (OLED) and driving method thereof
  • Active matrix organic light emitting diode (OLED) and driving method thereof

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Embodiment 1

[0031] Please refer to figure 1 , which is a schematic structural diagram of an active matrix organic light emitting display according to Embodiment 1 of the present invention. Such as figure 1 As shown, the active matrix organic light emitting display includes: an OLED screen body (not shown in the figure) and a driving device 20 for driving the OLED screen body, and the driving device 20 includes a temperature compensation unit, a gamma generating Device 25 and adder 27, the output end of described gamma generator 25 and temperature compensation unit are all connected with the input end of described adder 27, and described gamma generator 25 is used for video data code-conversion into data signal The temperature compensation unit is used to sense the temperature change of the OLED panel and output a compensation signal, and the adder 27 is used to superpose the data signal and the compensation signal to obtain a driving signal.

[0032] Specifically, the temperature compen...

Embodiment 2

[0047] Please refer to image 3 , which is a schematic structural diagram of an active matrix organic light emitting display according to Embodiment 2 of the present invention. Such as image 3 As shown, the active matrix organic light emitting display includes: an OLED screen body (not shown in the figure) and a driving device 30 for driving the OLED screen body, and the driving device 30 includes a temperature compensation unit, a gamma generating device 35, a gamma reference voltage generator 36 and an adder 37, the output terminals of the gamma reference voltage generator 36 and the temperature compensation unit are all connected to the input end of the adder 37, and the gamma reference voltage generates The device 36 is used to provide a gamma reference voltage, the temperature compensation unit is used to sense the temperature change of the OLED panel and output a compensation signal, and the adder 37 is used to superimpose the gamma reference voltage and the compensati...

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Abstract

The invention provides an active matrix OLED and a driving method thereof, wherein the active matrix OLED comprises an OLED screen body and a driving device used for driving the OLED screen body, and the driving device comprises a gamma generator, a temperature compensation unit and a summator. An output end of the gamma generator and the temperature compensation unit are both connected to an input end of the summator. The gamma generator is used for providing a data signal, and the temperature compensation unit is used for sensing the temperature change of the OLED screen body and outputting a compensation signal, and the summator is used for overlaying the data signal and the compensation signal in order to obtain a driving signal. According to the invention, a temperature compensation result is realized by obtaining the compensation signal of the OLED screen body temperature through adoption of the temperature compensation unit and by overlaying the compensation signal and the data signal generated by the gamma generator, and a display problem caused due to the screen body temperature change can be improved.

Description

technical field [0001] The invention relates to the field of flat panel display technology, in particular to an active matrix organic light emitting display and a driving method thereof. Background technique [0002] In recent years, with the rapid development and application of information technology, wireless mobile communication and information home appliances, people's dependence on electronic products is increasing day by day, which brings about the vigorous development of various display technologies and display devices. The flat panel display device has the characteristics of complete planarization, lightness, thinness, power saving, etc., and thus has been widely used. [0003] Among them, the active matrix organic light-emitting display (English full name ActiveMatrixOrganicLightingEmittingDisplay, referred to as AMOLED) is a flat-panel display device that uses a thin film transistor (English full name ThinFilmTransistor, referred to as TFT) to control an organic li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/3225
CPCG09G3/3208
Inventor 永井肇杨楠胡思明张小宝朱晖
Owner CHENGDU VISTAR OPTEOLECTRONICS CO LTD
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