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Active organic light-emitting diode displayer and driving method thereof

A technology of light-emitting diodes and driving methods, applied in static indicators, instruments, etc., can solve the problems of uneven display brightness and deviation, and achieve the effects of simple circuit structure, improved image quality, and favorable production and implementation.

Inactive Publication Date: 2013-01-16
SICHUAN CCO DISPLAY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, under the same gate-source input voltage, the source-drain current of different driving transistors is different, which makes the current flowing through OLED deviate when the same image data is input, resulting in uneven display brightness (MURA)

Method used

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  • Active organic light-emitting diode displayer and driving method thereof
  • Active organic light-emitting diode displayer and driving method thereof
  • Active organic light-emitting diode displayer and driving method thereof

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Embodiment Construction

[0023] Such as figure 2 and image 3 The active organic light-emitting diode display and its driving method of the present invention shown in the display have a row driver and a column driver connected to the pixel array, and also have a compensation unit, and a timing controller for receiving input signals is arranged in the compensation unit. The timing controller is connected to the column driver through the superimposer, and the timing controller is also connected to the row driver; the input end of the superimposing device is also sequentially connected to a display look-up table (LUT: Look-Up-Table) memory , A / D converter and current detector;

[0024] The pixel array is composed of pixel units, and each pixel unit includes a first switch conduction element T1 and a second switch conduction element T3 with a PMOS transistor structure, and a drive conduction element T2 with a PMOS transistor structure, and the first switch The source and drain of the conduction element...

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PUM

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Abstract

The invention relates to an active organic light-emitting diode (OLED) displayer and a driving method thereof. A compensation unit, a row driver and a column driver are arranged in the displayer, wherein the row driver and the column driver connect pixel arrays; a superimposer connected with a time schedule controller is arranged in the compensation unit; the time schedule controller is also connected with the row driver; the superimposer is connected with a storage, an A / D (alanog / digital) converter, a current detector and the column driver; a pixel unit of the pixel arrays comprises a first switch conduction element and a second switch conduction element of which control pins are simultaneously connected with the row driver; a data pin of the first switch conduct element is respectively connected with the column driver and a driving conduction element; a capacitor is arranged between an input pin and a control pin of the driving conduction element; the second switch conduction element is connected with the driving conduction element and the current detector; and the cathode of the OLED is connected to a power supply. The active organic light-emitting diode displayer can compensate for the factor causing poor image quality caused by inconsistent transfer characteristics of the driving conduction element, and improve the image quality of an AMOLED (active matrix / organic light emitting diode) displayer, and is simple in circuit structure.

Description

technical field [0001] The invention relates to a display and a driving method for the display, in particular to an active organic light emitting diode (AMOLED) display and a driving method thereof. Background technique [0002] In flat panel display technology, organic light-emitting diode display (OLED) is recognized as the successor by the industry due to its thinness, active light emission, fast response speed, wide viewing angle, rich color and high brightness, low power consumption, and high and low temperature resistance. The third generation of display technology after Liquid Crystal Display (LCD). According to the driving method, OLED is divided into passive organic light emitting diode (PMOLED, also known as passive matrix OLED) and active organic light emitting diode (AMOLED, also known as active matrix OLED). Among them, AMOLED is driven by integrating a thin film transistor (TFT) and a capacitor in each pixel and maintaining the voltage by the capacitor. AMOLE...

Claims

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Application Information

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IPC IPC(8): G09G3/32G09G3/3233G09G3/3258
Inventor 田朝勇郎丰伟
Owner SICHUAN CCO DISPLAY TECH
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