Active matrix/organic light emitting diode and driving circuit and method thereof

A panel drive circuit, light-emitting diode technology, applied in static indicators, instruments, etc., can solve the problems of drift, poor transistor uniformity, poor uniformity of AMOLED brightness, etc., and achieve the effect of ensuring consistency and good uniformity

Inactive Publication Date: 2012-08-29
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because in the existing low-temperature polysilicon process, the threshold voltage V of the transistor th The uniformity is poor, and drift will occur during use, so when the same data v

Method used

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  • Active matrix/organic light emitting diode and driving circuit and method thereof
  • Active matrix/organic light emitting diode and driving circuit and method thereof
  • Active matrix/organic light emitting diode and driving circuit and method thereof

Examples

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Example Embodiment

[0027] The active matrix organic light emitting diode panel (hereinafter referred to as AMOLED) and its driving circuit and method will be described in detail below in conjunction with the accompanying drawings.

[0028] Such as image 3 Shown is a schematic diagram of the AMOLED driving circuit of the present invention. In this embodiment, the AMOLED driving circuit includes two transistors, a capacitor, an organic light emitting diode (hereinafter referred to as OLED), a voltage regulating module, and corresponding input and output terminals. Corresponding to each AMOLED drive circuit, the corresponding input and output terminals include a horizontal scan signal terminal Scan, a data signal terminal Vdata, a first control signal terminal CR1, a second control signal terminal CR2, and a high-level signal terminal Vdd And a low-level signal terminal Vss. Specifically, the AMOLED drive circuit includes:

[0029] The driving transistor DTFT has its gate connected to the second capa...

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Abstract

The invention disclose an active matrix/organic light emitting diode and a driving circuit and method thereof, which relate to the technical field of organic light emitting display, and aim to increase the brightness uniformity of the active matrix/organic light emitting diode. The driving circuit of the active matrix/organic light emitting diode comprises a driving transistor, a first transistor, a second capacitor, an organic light emitting diode and a voltage regulating module, wherein the voltage regulating module connected among a first control signal end, a second control signal end and a high level signal end is connected with the second capacitor, the driving transistor and the first transistor and used for regulating the grid source voltage of the driving transistor connected with the second capacitor so that the driving current of the driving transistor in a saturated state is unrelated to the threshold voltage of the driving transistor. The active matrix/organic light emitting diode can be used for organic light emitting display.

Description

technical field [0001] The invention relates to the field of organic light-emitting display technology, in particular to an active matrix organic light-emitting diode panel, a driving circuit and a method thereof. Background technique [0002] AMOLED (Active Matrix Organic Light Emitting Diode) is an active matrix organic light emitting diode panel. Compared with the traditional transistor liquid crystal display panel (TFT LCD, Thin Film Transistor Liquid Crystal Display), AMOLED has the advantages of faster response speed, higher contrast ratio, and wider viewing angle, so it is called the next generation display technology. It is favored by most display technology developers. [0003] The active matrix organic light emitting diode panel is driven by a driving circuit to emit light. The traditional 2T1C drive circuit consists of two transistors (TFT) and a capacitor (C), the traditional 2T1C drive circuit such as figure 1 shown. figure 1 Among them, transistor M1 is a s...

Claims

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Application Information

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IPC IPC(8): G09G3/32
CPCG09G3/3233G09G2300/0852G09G2300/0861G09G2320/045G09G2300/0819G09G3/32
Inventor 祁小敬谭文
Owner BOE TECH GRP CO LTD
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