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Light emitting device and display device

A technology of light-emitting devices and light-emitting layers, which is applied in the direction of light-emitting materials, electric solid-state devices, semiconductor devices, etc., can solve the problems of no improvement, reduce the turn-on voltage, improve the luminous efficiency, and facilitate the injection of electrons and/or holes Effect

Active Publication Date: 2017-11-24
WUHAN TIANMA MICRO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The known technology improves the electron conduction rate by controlling the electron transport rate or the hole transport rate alone. Although it has a certain effect, the voltage, efficiency and life of some known technology light-emitting devices are not improved but worse.

Method used

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  • Light emitting device and display device
  • Light emitting device and display device
  • Light emitting device and display device

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Embodiment Construction

[0027] In order to better understand the technical solutions of the present invention, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0028] It should be clear that the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0029] Terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. As used in the embodiments of the present invention and the appended claims, the singular forms "a", "said" and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0030] An embodiment of the present inv...

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Abstract

The invention relates to the field of organic light emitting display, and in particular relates to a light emitting device and a display device. The light emitting device comprises an anode, a cathode opposite to the anode, and at least three organic layers arranged between the anode and the cathode. Each organic layer in at least three organic layers independently contains a compound with a spirobifluorene structure, or at least two organic layers contain at least three kinds of compounds with a spirobifluorene structure. According to the embodiment of the invention, the compounds with the spirobifluorene structure are arranged in the organic layers; since the spirobifluorene compounds have the same main ring structure, holes among different organic layers or the energy level difference of electron transport HOMO or LUMO can be reduced; the injection of electrons and / or holes is easier; the luminous efficiency can be improved; and the turn-on voltage can be reduced.

Description

technical field [0001] The invention relates to the field of organic light-emitting display, in particular, to a light-emitting device and a display device. Background technique [0002] With the advent of the information age, conventional cathode-ray tube (cathode-ray tube, CRT) displays are being replaced by flat-panel displays, and one of the most used flat-panel displays is Liquid Crystal Display (LCD), which has power consumption Low and light, but since LCDs are not self-illuminating, there are technical limitations in terms of contrast, viewing angle, and area and size. Organic Light Emitting Diode (OLED, Organic Light Emitting Diode) has the characteristics of self-illumination, wide viewing angle, short response time, high luminous efficiency, wide color gamut, low operating voltage, thin panel, and can produce large-size and bendable displays. So much attention. [0003] In existing OLED display devices, the main light-emitting unit is composed of an anode, a cat...

Claims

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Application Information

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IPC IPC(8): H01L51/50H01L51/54
CPCH10K85/625H10K85/624H10K50/15H10K50/16H10K50/17H10K50/171H10K50/18H10K50/11H10K2101/30C07D213/22C09K11/06C07D251/24H10K85/626H10K85/633H10K85/654H10K2101/40C07C2603/18C07C211/61C07C13/72C09K2211/1018C07C2603/97H10K50/165
Inventor 刘营王湘成牛晶华舒鹏
Owner WUHAN TIANMA MICRO ELECTRONICS CO LTD
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