Organic light emitting diode circuit and driving method thereof

一种发光二极管、驱动方法的技术，应用在仪器、静态指示器等方向，能够解决亮度无法一致、画面亮度不均匀、晶体管驱动电流差异等问题，达到改善充电不足、降低亮度不均、抑制驱动电流变异的效果

Active Publication Date: 2014-05-07
AU OPTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] When manufacturing transistors, due to the influence of manufacturing process variations, the threshold voltage (Vth) of different transistors may be different from each other, so that the driving current generated by the transistors during operation is also different.
When the driving current is different, it causes the brightness emitted by each OLED to be inconsistent, which in turn leads to the problem of uneven brightness (mura) in the display screen when displaying images.

Method used

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  • Organic light emitting diode circuit and driving method thereof
  • Organic light emitting diode circuit and driving method thereof
  • Organic light emitting diode circuit and driving method thereof

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Embodiment Construction

[0049] The content of the present invention can be explained by the following embodiments, but the embodiments of the present invention are not intended to limit the present invention to be implemented in any specific environment, application or method as described in the following embodiments. Therefore, the descriptions of the following examples are only to illustrate the present invention, but not to limit the present invention. In the following embodiments and drawings, elements not directly related to the present invention have been omitted and not shown, and the size ratios between the elements shown in the drawings are only for understanding, and are not intended to be limited to The actual implementation ratio of the present invention.

[0050] The terms "first", "second", ... etc. used herein do not refer to a particular order or sequence, nor are they used to limit the present invention, but are only used to distinguish elements or operations described with the same ...

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Abstract

The invention discloses an organic light emitting diode circuit and a driving method thereof. The organic light emitting diode circuit comprises a storage unit, a transistor, a coupling capacitor, a compensation unit, an input unit, a switching unit, and an organic light emitting diode. The transistor is used to drive a second end of the transistor by voltage stored by the storage unit, so as to generate driving current. The coupling capacitor changes potential of the second end of the transistor. The compensation unit makes potential of the second end of the transistor change according to a first scanning signal. The input unit transmits data voltage to the storage unit according to a second scanning signal. The switching unit is connected according to a lighting signal, so that the driving current is transmitted to the organic light emitting diode through the switching unit.

Description

technical field [0001] The invention relates to an organic light emitting diode circuit and a driving method thereof, in particular to an organic light emitting diode circuit with a dynamic reset potential and a driving method thereof. Background technique [0002] Due to the development of display technology in recent years, flat panel displays have been widely used in daily life. Among them, organic light-emitting diode (OLED) displays are more popular because of their high image quality, high contrast and high response speed. [0003] Generally speaking, an OLED display includes a data driving unit, a scanning driving unit and a plurality of display units. Each display unit includes an organic light emitting diode circuit, and the organic light emitting diode circuit includes a plurality of transistors. [0004] When manufacturing transistors, the threshold voltage (Vth) of different transistors may be different due to the influence of manufacturing process variations, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/32
CPCG09G3/3233G09G3/3291G09G2300/0819G09G2300/0842G09G2300/0852G09G2310/0202G09G2320/0233
Inventor 钟杰兴
Owner AU OPTRONICS CORP
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