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Organic Light Emitting Diode Driver Circuit

A technology of light-emitting diodes and driving circuits, which is applied in the direction of instruments and static indicators, etc., can solve the problem that the data signal generation circuit is difficult to have three signals with different potentials, so as to improve the consistency and stability and eliminate the influence of the threshold voltage , Improve the effect of display quality

Active Publication Date: 2015-11-04
CHANGSHA HKC OPTOELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, within one cycle, the data signal in the driving circuit needs to be switched between three signals with different potentials, and it is difficult for the existing data signal generating circuit to realize three signals with different potentials.

Method used

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  • Organic Light Emitting Diode Driver Circuit
  • Organic Light Emitting Diode Driver Circuit
  • Organic Light Emitting Diode Driver Circuit

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Embodiment Construction

[0037] 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.

[0038] see Figure 6 , the present invention provides a driving circuit for an organic light emitting diode, comprising: a first thin film transistor T1, a second thin film transistor T2, a third thin film transistor T3, a fourth thin film transistor T4 and a first capacitor C 1 , the first thin film transistor T1 has a first gate g1, a first source s1 and a first drain d1, and the second thin film transistor T2 has a second gate g2, a second source s2 and a second drain electrode d2, the third thin film transistor T3 has a third gate g3, a third source s3 and a third drain d3, and the fourth thin film transistor T4 has a fourth gate g4, a fourth source s4 and a fourth Four drains d4, the first drain d1 is connected to the second gate g2, the...

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Abstract

A drive circuit of an organic light-emitting diode (400), comprising: a first thin film transistor (T1), a second thin film transistor (T2), a third thin film transistor (T3), a fourth thin film transistor (T4) and a first capacitor (C1). By way of newly adding a fourth thin film transistor (T4) to an existing 3T1C drive circuit, the drive circuit of the organic light-emitting diode (400) not only eliminates the influence of a threshold voltage, improves the consistency and stability of a current of the organic light-emitting diode (400) and improves the display quality of the organic light-emitting diode (400), but also enables a data signal to only switch between two signal bands with different levels, thereby effectively solving the problem that a data signal in the existing drive circuit needs to switch among three signal bands with different levels within a time period while it is difficult to achieve three signal bands with different levels.

Description

technical field [0001] The invention relates to the field of plane display, in particular to a driving circuit of an organic light emitting diode. Background technique [0002] The flat panel display device has many advantages such as thin body, power saving, and no radiation, and has been widely used. Existing flat panel display devices mainly include Liquid Crystal Display (LCD) and Organic Electroluminescence Device (OELD), also known as Organic Light Emitting Diode (OLED). [0003] Organic light-emitting diodes have the characteristics of self-luminescence, high brightness, wide viewing angle, high contrast, flexibility, low energy consumption, etc., so they have received extensive attention, and as a new generation of display methods, they have gradually replaced traditional liquid crystal display devices and are widely used. It is used in mobile phone screens, computer monitors, full-color TVs and other fields. Organic electroluminescent devices are different from tr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/32
CPCG09G3/3233G09G2300/0819G09G2300/0842G09G2310/0251G09G2320/0233G09G2320/045G09G3/3225G09G3/3258G09G3/3266G09G2310/0216
Inventor 吴小玲
Owner CHANGSHA HKC OPTOELECTRONICS CO LTD