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Selection method of oled doping concentration

A doping concentration and display device technology, which is applied in the selection of OLED doping concentration and the detection of OLED leakage point, can solve the problems of temperature rise, optimal doping concentration error, and inability to accurately reflect luminous efficiency, and achieve The effects of accurate detection, reduction of leakage, improvement of yield and life

Active Publication Date: 2018-11-23
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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Problems solved by technology

Since the external quantization efficiency of OLED display devices is generally lower than its internal quantization efficiency (Internal Quantunm Efficiency, IQE), it cannot accurately reflect the actual luminous efficiency. There is an error in the optimal doping concentration
[0005] When the anode and cathode of the OLED display device are connected to the reverse voltage, if there is a leakage point on the OLED display device, a leakage current will be generated at the leakage point to increase the temperature of the leakage point, increasing the power of the OLED display device. consumption, which affects the yield and life of OLED display devices, so it is necessary to repair the leakage point of OLED display devices

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  • Selection method of oled doping concentration
  • Selection method of oled doping concentration
  • Selection method of oled doping concentration

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Embodiment Construction

[0038] 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.

[0039] see Figure 1 to Figure 3 , the present invention firstly provides a method for selecting OLED doping concentration, comprising the following steps:

[0040] Step 1. Please refer to figure 2 , step 1, providing several OLED display devices 12 with different doping concentrations, the several OLED display devices 12 with different doping concentrations are arranged on the same base substrate 11 or on several different base substrates 11;

[0041] Specifically, in the step 1, several OLED display devices 12 have reserved wires, so as to facilitate the application of voltage to the OLED display devices 12 for detection in the subsequent steps.

[0042] Step 2, see figure 2 , providing a temperature detection system 20;

[0043] The t...

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Abstract

The invention provides an OLED (Organic Light Emitting Diode) doping concentration selection method and an OLED current leakage point detection method. According to the OLED doping concentration selection method, through applying forward electrode to a plurality of OLED display devices, an infrared sensor is used for sensing the surface temperature of each OLED display device, a computer is used for comparing and analyzing the surface temperature of each OLED display device, the best OLED doping concentration is obtained, and the best OLED doping concentration detection is accurate. According to the OLED current leakage point detection method, through applying reverse electrode to a plurality of OLED display devices on an OLED display panel, an infrared sensor is used for sensing the surface temperature of each OLED display device on the OLED display panel, a computer is used for comparing and analyzing the surface temperature of each OLED display device, the accurate position of a current leakage point on the OLED display panel is obtained, basis is provided for repair of the current leakage point, current leakage is reduced, and the yield and the service life of the OLED display device are improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a method for selecting an OLED doping concentration and a method for detecting an OLED leakage point. Background technique [0002] Organic light emitting diodes (Organic Light Emitting Diodes, OLED) display devices have self-illumination, low driving voltage, high luminous efficiency, short response time, high definition and contrast, nearly 180° viewing angle, wide operating temperature range, and can realize flexible display and With many advantages such as large-area full-color display, it is recognized by the industry as a display device with the most potential for development. [0003] OLED display devices belong to self-luminous display devices, and generally include pixel electrodes and common electrodes used as anodes and cathodes respectively, and an organic light-emitting layer arranged between the pixel electrodes and the common electrodes, so that when an appropriat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/26G01R31/02G01J5/00
CPCG01J5/00G01R31/2635G01R31/58
Inventor 黄伟
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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