Full-color polarization electroluminescence element
Technical field
The present invention is a kind of full-color polarization electroluminescence element, can be applicable to industries such as organic electro-luminescent display, three-dimensional film display, and a high efficiency polarization light source is provided.
Background technology
General polarization image all is to utilize Polarizer to absorb the polarised light of a direction of image, and to obtain linear polar biased light, the result because of Polarizer absorbs makes its energy utilization efficiency not high, and the highest also only have 50%.
For example very popular in recent years three-dimensional film, the mode of its demonstration is to utilize two displays to throw different polarization light show images simultaneously in screen, the special spectacles that has different polaroids about utilizing spectators again and being worn, experience stereopsis, yet by after the polaroid, its energy is absorbed in a large number.
The light emitting source of display, its material is divided into and uses two kinds of inorganic compound and fluorescent organic compounds, use the backlight of inorganic compound to comprise brilliant formula of heap of stone or thick pattern, the fluorescent organic compound then roughly is divided into micromolecule electroluminescence element (OLED) and macromolecule electroluminescence element (PLED) according to its molecular weight.
The principle of luminosity of organic electroluminescent element is to utilize properties of materials, with electron hole combination on luminescent layer, and electronics is fallen back ground state by the form of excitation state, and unnecessary energy is disengaged with the form of ripple, thereby reach the generation of the light-emitting component that different wave length is arranged.Wherein anode (Anode) is tin indium oxide (ITO) electro-conductive glass film, with sputter or evaporation mode, be attached on glass or the transparent plastic substrate, negative electrode then contains magnesium (Mg), aluminium (Al), lithium metals such as (Li), then be the light-emitting zone that a plurality of organic films form between two electrodes, comprise injection region, hole (Hole injection layer; HIL) hole-transfer district (HoleTransport Layer; HTL) organic luminous layer (Emitting layer) and electron transfer layer (Electron Transport Layer; ETL), when practical application is produced in batches, consider, also can comprise other different films sometimes based on different demands.
Because organic molecule electroluminescence material can not tempering, so can't be in the mode of rubbing or stretching, make the luminescent layer molecules align have directivity, wish to get the light source of polarization, normally utilize a Polarizer to absorb the polarised light of a direction of image, obtaining a linear polar biased optical image, so the utilization ratio of its energy of light source is not high, and usually usury efficient is 50%.
Summary of the invention
Main purpose of the present invention is to solve above-mentioned defective, for fear of the existence of defective, the invention provides a high efficiency polarization light source.The present invention utilizes directed micromolecular evaporation coating technique, in the micromolecule both alignment layers that has directivity under room temperature or the particular substrate temperature with special angle oblique evaporation one deck on tin indium oxide (ITO) electrically-conductive backing plate, distinguish evaporation red (R), green (G), blue (B) three look micromolecule luminescent materials on this micromolecule both alignment layers with the light shield technology again, one cathode layer and encapsulation are set at last again, promptly get a light-emitting component that can send linear polarization light.
The invention provides a kind of full-color polarization electroluminescence element, include: a transparency carrier (10); One is positioned at the transparency conducting layer (20) on the aforesaid substrate; One is positioned at the micromolecule both alignment layers (30) of above-mentioned transparency conducting layer (20); One is positioned at the micromolecule luminescent layer (40) on the above-mentioned micromolecule both alignment layers (30); One is positioned at the electron transfer layer (50) on the above-mentioned micromolecule luminescent layer (40); One is positioned at the cathode layer (60) on the above-mentioned electron transfer layer (50); Wherein,, above-mentioned micromolecule luminescent layer is arranged according to the lattice direction of both alignment layers, thereby obtained sending out the electroluminescence element of polar biased light by oblique evaporation micromolecule luminescent layer.
Description of drawings
Fig. 1 is a program flow diagram of the present invention.
Fig. 2 is an organigram of the present invention.
Detailed Description Of The Invention
Relevant detailed description of the present invention and technology contents now cooperate graphic being described as follows:
Please consulting simultaneously shown in Fig. 1,2, is program flow diagram of the present invention and organigram.
Wherein, the surface of transparency conducting layer 20 has the bonding of indium tin-oxygen-silicon-organic functional base, and these micromolecule both alignment layers 30 materials conjugated oligomer (a-sexithiophene) that is a polythiofuran derivative, silicon dioxide, potassium chloride crystallizing layer or Potassium Hydrogen Phthalate (the potassium acid phthalate of oblique evaporation; KAP).
And this three looks micromolecule luminescent material is respectively:
The small molecule material that glows:
Or
The small molecule material of green light:
The small molecule material of blue light-emitting:
Or
By, above-mentioned this has the micromolecule both alignment layers 30 of directivity, utilizes its surface to have the specific lattice direction, when therefore micromolecule luminescent layer 40 is arranged at its surface, can arrange according to this direction, form specific direction, therefore can obtain the electroluminescence element of a polar biased light.
See also shown in Figure 2, it is organigram of the present invention, as shown in the figure: the present invention is a kind of electroluminescence element of full-color polarization, include a transparency carrier 10, one is positioned at transparency conducting layer 20, on this transparency carrier 10 is positioned at micromolecule both alignment layers 30, on the above-mentioned transparency conducting layer 20 and is positioned at micromolecule luminescent layer 40 on the above-mentioned micromolecule both alignment layers 30, one is positioned at electron transfer layer 50, on the above-mentioned micromolecule luminescent layer 40 is positioned at cathode layer 60 on the above-mentioned electron transfer layer 50.
The above only is preferred embodiment of the present invention, can not with qualification scope of the invention process, promptly the equalization of being done according to the present patent application claim changes and modifies, and all should still belong to the scope that patent of the present invention contains.