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Active matrix organic light emitting diode pixel compensation circuit and driving method thereof

A light-emitting diode and active matrix technology, applied in the field of active matrix organic light-emitting diode pixel compensation circuit and its drive, can solve the problems of unevenness of display brightness and affecting display quality, etc., achieve comprehensive drift of electrical parameters, and facilitate opening The effect of high rate, good picture stability and uniformity

Active Publication Date: 2021-08-13
SOUTHEAST UNIV
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  • Description
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  • Application Information

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Problems solved by technology

[0004] In addition to the drift of the key electrical parameters of the transistor, the degradation of the electrical parameters of the OLED (especially the increase in the operating voltage Voled) will also cause the unevenness of the display brightness, thereby affecting the display quality

Method used

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

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Embodiment Construction

[0035] Below in conjunction with embodiment the present invention will be further described.

[0036]An active matrix organic light emitting diode pixel compensation circuit provided by the present invention includes a first switching transistor T1, a second switching transistor T2, a third switching transistor T3, a fourth switching transistor T4, a driving transistor T5, a storage capacitor Cs, and a compensation capacitor Cc, an organic light emitting diode OLED, a first scanning control line Vs1 , a second scanning control line Vs2 , a data signal line Vdata, and a power supply / reference multiplexing line Vdd / Vref.

[0037] The first switching transistor T1 , the second switching transistor T2 , the third switching transistor T3 , the fourth switching transistor T4 and the driving transistor T5 are all N-type transistors.

[0038] The drain of the first switching transistor T1 is connected to the data signal line Vdata, the gate is connected to the first scanning control l...

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Abstract

The invention discloses an active matrix organic light emitting diode pixel compensation circuit and a driving method thereof. The circuit comprises a first switch transistor T1, a second switch transistor T2, a third switch transistor T3, a fourth switch transistor T4, a driving tube T5, a storage capacitor Cs, a compensation capacitor Cc, an organic light emitting diode OLED, a first scanning control line Vs1, a second scanning control line Vs2, a data signal line Vdata and a power supply / reference multiplexing line Vdd / Vref. The driving method comprises a compensation stage, a data writing stage and a light emitting stage. In the data writing-in stage, writing-in of data signals is achieved, and compensation of migration rate changes of a driving tube T5 is also achieved. The active matrix organic light emitting diode pixel compensation circuit has the advantages of being high in aperture ratio, compensating migration rate changes of a driving tube, slowing down the degradation speed of an organic light emitting diode (OLED) and the like.

Description

technical field [0001] The present invention relates to the field of display pixel circuits, in particular to an active-matrix organic light emitting diode (Active-Matrix Organic Light Emitting Diode, AMOLED) pixel compensation circuit and a driving method thereof. Background technique [0002] As a human-computer interaction interface, the flat panel display is currently widely used in various electronic products. Active matrix organic light-emitting diodes are considered to be the mainstream display technology of the next generation, with independent light emission, wide viewing angle, good uniformity, high brightness, high contrast, low power consumption, and wide operating temperature range (can still work at -40°C) And it is beneficial to the advantages of flexible display, so it has received extensive attention and research. The traditional active matrix organic light emitting diode pixel circuit consists of two thin film transistors (2T, T means Transistor), a storag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/3258G09G3/3266
CPCG09G3/3258G09G3/3266G09G2320/0233
Inventor 黄晓东李鼎张超王明阳
Owner SOUTHEAST UNIV
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