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

Red phosphorescent compound and organic light emitting diode device using red phosphorescent compound

A light-emitting diode, red phosphorescence technology, applied in indium organic compounds, platinum group organic compounds, light-emitting materials, etc., can solve problems such as difficulty in providing high light-emitting efficiency and reduced visibility

Inactive Publication Date: 2019-01-15
YURUI SHANGHAI CHEM
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most particularly, when a red phosphorescent material is used, as the color purity increases (i.e., the X value of the CIE chromaticity coordinate becomes larger), visibility decreases, making it difficult to provide high luminous efficiency

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
  • Red phosphorescent compound and organic light emitting diode device using red phosphorescent compound
  • Red phosphorescent compound and organic light emitting diode device using red phosphorescent compound
  • Red phosphorescent compound and organic light emitting diode device using red phosphorescent compound

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0112] The ITO glass substrate was patterned to have a light emitting area of ​​3 mm x 3 mm. Then, the patterned ITO glass substrate was washed. The substrate is then placed in a vacuum chamber. The standard pressure setting is 1×10 -6 support. Thereafter, on the ITO substrate with CuPc NPB CBP+RD-001(5%) Alq 3 LiF and Al The sequence forms layers of organic matter.

[0113] At 0.9mA, the brightness is equal to 1131cd / m 2 (6.0V). At this time, CIEx=0.673, y=0.329.

no. 2 approach

[0115] The ITO glass substrate was patterned to have a light emitting area of ​​3 mm x 3 mm. Then, the patterned ITO glass substrate was washed. The substrate is then placed in a vacuum chamber. The standard pressure setting is 1×10 -6 support. Thereafter, on the ITO substrate with CuPc NPB CBP+RD-361(5%) Alq 3 LiF and Al The sequence forms layers of organic matter.

[0116] At 0.9mA, the brightness is equal to 1214cd / m 2 (6.2V). At this time, CIEx=0.674, y=0.327.

no. 3 approach

[0118] The ITO glass substrate was patterned to have a light emitting area of ​​3 mm x 3 mm. Then, the patterned ITO glass substrate was washed. The substrate is then placed in a vacuum chamber. The standard pressure setting is 1×10 -6 support. Thereafter, on the ITO substrate with CuPc NPB CBP+RD-002(5%) Alq 3 LiF and Al The sequence forms layers of organic matter.

[0119] At 0.9mA, the brightness is equal to 1102cd / m 2 (6.1V). At this time, CIEx=0.676, y=0.325.

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 red phosphorescent compound and an organic light emitting diode device using the red phosphorescent compound. The red phosphorescent compound having the structural formula as shown in I, wherein R1, R2, R3 and R4 are independently selected from one of H and C1 to C6 alkyl groups; in the formula (I), a group shown in the specification is selected one the group consisting of a specific alkanedione and a derivative thereof. The organic light emitting diode device includes a positive pole, a hole injecting layer, a hole transporting layer, a light emitting layer,an electron transporting layer, an electron injecting layer and a negative pole which are sequentially deposited; the organic light emitting diode device comprises the red phosphorescent compound as adopant. The red phosphorescent compound enables the organic light emitting diode device to have high efficiency and high color purity and narrow spectrum.

Description

technical field [0001] The present invention relates to an organic light emitting diode device, in particular, to a red phosphorescent compound and an organic light emitting diode device using the same. In particular, the present invention relates to red phosphors used as dopants for light-emitting layers of organic light-emitting diode devices. Background technique [0002] In recent years, as the size of display devices has become larger, there has been an increasing demand for flat panel display devices that occupy less space. The flat panel display devices include organic electroluminescent devices, also known as organic light emitting diodes (OLEDs). The technology of this organic light emitting diode device is developing at a tremendous rate and many prototypes have been disclosed. [0003] An organic electroluminescent device emits light when charges are injected into an organic layer formed between an electron injection electrode (cathode) and a hole injection elec...

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 Applications(China)
IPC IPC(8): C07F15/00C09K11/06H01L51/50H01L51/54
CPCC09K11/06C07F15/0033C09K2211/185H10K85/342H10K50/11
Inventor 郑贤哲
Owner YURUI SHANGHAI CHEM