OLED (Organic Light Emitting Diode) driving circuit, display panel, preparation method and display equipment

A technology for driving circuits and display panels, used in static indicators, instruments, etc., can solve problems such as irreversible effects on function and stability, and achieve the effect of eliminating negative effects and improving reliability.

Active Publication Date: 2022-04-19
SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Based on this, it is necessary to provide an OLED drive circuit, a display panel, a preparation method and a display device for the problem that large currents easily cause irreversible effects on the function and stability of TFT devices in existing OLED aging tests.

Method used

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  • OLED (Organic Light Emitting Diode) driving circuit, display panel, preparation method and display equipment
  • OLED (Organic Light Emitting Diode) driving circuit, display panel, preparation method and display equipment
  • OLED (Organic Light Emitting Diode) driving circuit, display panel, preparation method and display equipment

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Embodiment Construction

[0041] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. A preferred embodiment of the application is shown in the drawings. However, the present application can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this application more thorough and comprehensive.

[0042] It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to and integrally integrated with the other element, or there may be an intervening element at the same time. The terms "disposition", "one end", "other end" and similar expressions are used herein for the purpose of description only.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commo...

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Abstract

The invention relates to an OLED (Organic Light Emitting Diode) driving circuit, a display panel, a preparation method and display equipment, in the circuit, the anode of an organic light emitting diode is connected with a driving node, and the cathode of the organic light emitting diode is connected with a low power supply voltage end; the cathode of the diode device is connected with the anode of the organic light-emitting diode; the output end of the auxiliary cathode circuit is connected with the anode of the diode device, and the auxiliary cathode circuit receives a test current signal; a connecting part is arranged between the low power supply voltage end and the auxiliary cathode line; in the aging test period, the connecting part is disconnected, so that the auxiliary cathode line transmits a test current signal to the organic light emitting diode; and after the aging test period is finished, the connecting part is conducted, so that the organic light-emitting diode works normally. In the aging test process, the flowing large current can avoid the TFT path, the negative influence of the large current on the TFT device is eliminated, and after the aging test is completed, the normal light emitting of the organic light emitting diode is not influenced, and the reliability of the OLED driving circuit is improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an OLED driving circuit, a display panel, a preparation method and a display device. Background technique [0002] OLED (Organic Light-Emitting Diode, organic light-emitting diode) is an active light-emitting device. Compared with LCD (Liquid Crystal Display, liquid crystal display), OLED does not need to provide a backlight source, and the OLED display device has ultra-thin, high brightness, and drive Advantages such as low voltage are considered to be next-generation display devices. [0003] After the initial production of the organic light-emitting diode in the OLED display device is completed, a large current needs to be passed through for a long time (such as several hours) for aging test. The purpose is to make the light-emitting diode quickly pass through the early brightness fluctuation and rapid decay Period, improve the stability of light-emitting diodes. [0004] I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/3208G09G3/3233G09G3/00
CPCG09G3/3208G09G3/3233G09G3/006
Inventor 申郑
Owner SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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