Unlock instant, AI-driven research and patent intelligence for your innovation.

Detecting device of organic electroluminescent device

A technology of electroluminescent devices and detection devices, which is applied in the direction of measuring devices, instruments, measuring electricity, etc., and can solve the problems of large energy consumption and consumption

Active Publication Date: 2010-09-29
GUAN YEOLIGHT TECH CO LTD +1
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This detection method also requires the display screen to work, which consumes a lot of energy

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Detecting device of organic electroluminescent device
  • Detecting device of organic electroluminescent device
  • Detecting device of organic electroluminescent device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The detection object of the present embodiment is a green test piece of 0.3cm × 0.3cm, and the device structure is: anode (ITO) / (hole injection layer) HIL / (hole transport layer) HTL / (luminescent layer) EML / (electron Transport layer) ETL / (cathode) LiF / Al, the entire screen of the test piece described in this embodiment is one pixel.

[0031] Connect the anode of the capacitance measuring instrument 11 to the anode of the test piece, and the cathode to the cathode of the test piece, and detect the capacitance value of the entire screen as 5.06nF, which meets the standard value range of the capacitance of the green test piece of 0.3cm×0.3cm in the data memory 21, which is 4.50 nF ~ 6.50nF, and the current test results also show that the experimental piece has no defects.

Embodiment 2

[0033] The detection object of this embodiment is a green test piece of 0.3 cm×0.3 cm.

[0034] Connect the anode of the capacitance measuring instrument 11 to the anode of the test piece, and the cathode to the cathode of the test piece, and detect that the capacitance value of the entire screen is 4.00nF, which does not meet the standard value of the capacitance of the green test piece of 0.3cm×0.3cm in the data memory 21 The range is 4.50nF~6.50nF. The brightness of the light-emitting area is low during the test. Impurities are found in the display area in the magnifying glass. After entering the repair program, the defect is repaired and the aforementioned test process is repeated. The measured capacitance value of the test piece is 4.64nF, which is in line with the data. The capacitance standard value range in the memory 21 is 4.50nF˜6.50nF, and the light-emitting area works normally at this time.

Embodiment 3

[0036] The detection object of this embodiment is a green test piece of 0.3 cm×0.3 cm.

[0037] Connect the anode of the capacitance measuring instrument 11 to the anode of the test piece, and the cathode to the cathode of the test piece, and detect the capacitance value of the entire screen to be 190nF, which is far beyond the standard value range of the capacitance of the green test piece of 0.3cm×0.3cm in the data memory 21 4.50nF ~ 6.50nF, and very unstable, this test piece has an obvious short circuit point, which cannot be repaired, and is a scrap product.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention discloses a detection device of an organic electroluminescent device. The detection device comprises a capacitance data acquisition unit, a data storage unit, a data comparison unit, a data processing unit and a conduction unit; the capacitance data acquisition unit is connected with the conduction unit in queue; the output of the data acquisition unit and the output of the data storage unit are respectively connected with the input end of the data comparison unit; the output end of the data comparison unit is connected with the input end of the data processing unit; andthe output end of the data processing unit is connected with the conduction unit and the data storage unit. The detection device adopts the characteristic that the organic electroluminescent device has a standard value of capacitance to detect the capacitance; the detection results are compared with the standard value of capacitance; if the detection results lie within the standard value of capacitance, the pixel has no defects; if the detection results lie beyond the standard value of capacitance, the pixel has defects and requires repairing. The detection device can simply and effectively detect the capacitance of the screen; and no devices are required in the detection.

Description

technical field [0001] The invention relates to a detection device, in particular to a detection device of an organic electroluminescent device. Background technique [0002] Organic electroluminescent displays (OLEDs) have a series of advantages such as self-luminescence, low-voltage DC drive, full curing, wide viewing angle, and rich colors, and have broad application prospects. [0003] At present, OLED devices are divided into two types: light source and dot matrix. The light source is a full-screen lighting type, which is equivalent to a single pixel in the entire screen; while the dot matrix type is mainly used in display screens and consists of multiple groups of pixels. [0004] During the preparation process of OLED, dust in the environment and impurities in the evaporation process will enter the light-emitting area. Due to the existence of dust, there will be a short circuit between the electrodes, and then there will be no bright spots and serial connections, maki...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/00G01R31/02G09G3/32G01R31/00G09G3/3208
Inventor 邱勇王龙聂鸿喜刘嵩高裕弟
Owner GUAN YEOLIGHT TECH CO LTD