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

A driving method and compensation circuit technology, applied in static indicators, instruments, etc., can solve the problems affecting display quality, display brightness unevenness, etc., and achieve the effects of comprehensive electrical parameter drift, favorable aperture ratio, and slowing down the degradation speed.

Active Publication Date: 2022-03-29
SOUTHEAST UNIV
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  • Description
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AI Technical Summary

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 of 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, comprising 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 memory Capacitor Cs, compensation capacitor Cc, organic light emitting diode OLED, first scan control line Vs1, second scan control line Vs2, data signal line Vdata, power supply / reference multiplexing line Vdd / Vref. The driving method includes a compensation phase, a data writing phase and a light emitting phase. Wherein, the data writing phase not only realizes writing of data signals, but also realizes compensation for changes in mobility of the driving tube T5. The active matrix organic light emitting diode pixel compensation circuit of the present invention has the advantages of high aperture ratio, compensating the change of the mobility of the driving tube, slowing down the degradation speed of the 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 Patents(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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