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Electroluminescence multi-color displayed high-molecular film and preparation method thereof

A polymer film, light-emitting display technology, applied in the direction of electroluminescence light source, electric light source, light source, etc., can solve the problems of long time, complicated process and high cost, and achieve the effect of easy realization and large area film

Inactive Publication Date: 2005-07-13
GUANG ZHOU NEW VISION OPTO ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The defect of this method is that in the process of preparing color light-emitting display devices, it is necessary to prepare more than nine organic layers, more than two transparent electrode layers, and three metal layers at the same time, and the process is very complicated. Long time, resulting in high cost and low yield

Method used

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  • Electroluminescence multi-color displayed high-molecular film and preparation method thereof
  • Electroluminescence multi-color displayed high-molecular film and preparation method thereof
  • Electroluminescence multi-color displayed high-molecular film and preparation method thereof

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Embodiment Construction

[0028] The best embodiment of the present invention is to adopt ITO transparent conductive glass as substrate, prepare PEDOT (polyaniline derivative) hole transport layer (thickness 70nm) with spin coating method, heat 70 ℃ in vacuum oven, 2 hours . Select high luminous efficiency and hole-transporting polymer materials with red (poly-p-acetylene derivative MEHPPV), green (poly-p-acetylene derivative P-PPV) and blue (polyfluorene PF) luminescent colors. The molecular structure is as follows :

[0029]

[0030]MEHPPV, P-PPV and PF were dissolved in toluene solvent to make 0.5mol / ml, 1mol / ml and 2mol / ml toluene solutions respectively, and the three polymer uniform films were prepared by spin coating method. Blue (PF) luminescent film (thickness 60nm), green (P-PPV) luminescent film (thickness 50nm) and red (MEH-PPV) luminescent film (thickness 50nm) were sequentially made on the PEDOT polymer film. Metal electrodes with low work function (Ca-4nm / Al-200nm two metals) are vac...

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Abstract

The present invention relates to a polymer film for electroluminescent multicolor luminescence display and a preparation method thereof. The film is composed of a transparent substrate, a transparent electrode, a hole transport layer, a multilayer polymer film and a metal electrode film in sequence; Metal layers are respectively plated between the polymer layer and the second polymer layer, between the second polymer layer and the third polymer layer, and on the third polymer layer. Viewed from a direction perpendicular to the film, all metal layers The layers do not block each other, and the present invention uses the excitation energy of the wide-bandgap polymer luminescent material to easily carry out the intermolecular energy transfer mechanism to the narrow-gap polymer luminescent material by regulating the electron and hole carrier transport process to realize the color polymer Luminescent display; this film has the effects and advantages of ultra-thin, stable, and adjustable luminescent color, and can realize the production of polymer color display.

Description

technical field [0001] The invention relates to an electroluminescent material for realizing color display, more specifically a polymer film for electroluminescent multicolor display. [0002] The invention also relates to a preparation method of the polymer film for electroluminescence display. Background technique [0003] The phenomenon that electroluminescent devices constructed of polymer films can obtain bright luminescence under low voltage driving is gradually applied to various types of flat panel displays, such as mobile phones, PDAs, computer display terminals, TVs, and various instrument displays. As a polymer light-emitting device for display, it has many incomparable advantages of similar devices: ultra-thin, light weight, active light emission, wide viewing angle, high efficiency, high brightness, simple process, low power consumption, low cost, flexible screen display, etc. . The basic structure of this polymer display device includes two layers of electrod...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B33/10H05B33/14
Inventor 彭俊彪曹镛杨伟莫越奇高维先
Owner GUANG ZHOU NEW VISION OPTO ELECTRONICS TECH