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Driving method and pixel units of active matrix organic light emitting diode panel

A technology of light-emitting diodes and active matrix, applied in instruments, static indicators, etc., can solve the problems of poor brightness uniformity of active matrix organic light-emitting diode panels, variation of transistor M200 drive current, etc., to solve uneven brightness and improve display The effect of uniform quality and brightness

Active Publication Date: 2015-02-25
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this control method easily causes the driving current of the transistor M200 to vary, resulting in poor brightness uniformity of the active matrix organic light emitting diode panel

Method used

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  • Driving method and pixel units of active matrix organic light emitting diode panel
  • Driving method and pixel units of active matrix organic light emitting diode panel
  • Driving method and pixel units of active matrix organic light emitting diode panel

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Embodiment Construction

[0033] In order to further illustrate the technical means adopted by the present invention and its effects, the following describes in detail in conjunction with preferred embodiments of the present invention and accompanying drawings.

[0034] see Figures 3 to 6 , the present invention provides a driving method for an active matrix organic light emitting diode panel, comprising the following steps:

[0035] Step 1, provide an active matrix organic light emitting diode panel, the active matrix organic light emitting diode panel includes several pixel units 20 arranged in a matrix, each pixel unit 20 includes: a row scan line signal supply unit 22, a data signal The supply unit 24 , the driving voltage supply unit 26 , the first transistor M1 , the second transistor M2 , the storage unit 27 and the light emitting unit 28 .

[0036] The first transistor M1 has a first gate g, a first source s, and a first drain d, and the second transistor M2 has a second gate g, a second drai...

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Abstract

A drive method and a pixel unit of an active matrix organic light emitting diode (AMOLED) panel. The drive method comprises: Step 1, providing an AMOLED panel, comprising pixel units, each pixel unit comprising: a row scan line signal supply unit, a data signal supply unit, a drive voltage supply unit, a first transistor, a second transistor, a storage unit, and a light emitting unit, where the first transistor has a first gate and a first source; Step 2, the data signal supply unit providing frame image data, and evenly dividing one field corresponding to each piece of frame image data into multiple subfields, and the drive voltage supply unit providing multiple drive voltages; Step 3, the row scan line signal supply unit outputting a high level, and the data signal supply unit applying a control signal on the first transistor, forming a voltage difference between the first gate and the first source, and when a voltage difference of a subfield is located in a high voltage difference region, providing, by using the drive voltage supply unit, a drive voltage to drive the light emitting unit.

Description

technical field [0001] The present invention relates to an organic light-emitting diode (Organic Light-Emitting Diode, OLED) display technology, in particular to a driving method and a pixel unit of an active matrix organic light-emitting diode panel. Background technique [0002] Organic light-emitting diode panel refers to a thin-film light-emitting device made of organic semiconductor materials and driven by DC voltage. The principle of OLED light emission is to use indium tin oxide (ITO) transparent electrode and metal electrode as the anode and cathode of the device respectively. Driven by a certain voltage, electrons and holes are injected from the cathode and anode to the electron and hole transport layers respectively. The holes migrate to the light-emitting layer through the electron and hole transport layers respectively, and meet in the light-emitting layer to form excitons and excite the light-emitting molecules, and emit visible light through radiation. [0003...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/32
CPCG09G3/32G09G3/3233G09G3/2025G09G2320/0233G09G2330/028
Inventor 李纯怀
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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