Organic EL display with an organic compound derivative layer
View Patent ↗An organic EL display includes an anode electrode; a cathode electrode; at least one organic layer selected from a hole transport layer, a hole injection layer, a light-emitting layer, an electron transporting layer, and an electron injection layer between the anode electrode and the cathode electrode; and at least one organic compound derivative layer arranged between the anode electrode and the cathode electrode, the organic compound derivative layer having a structure of formula: R 1 R 2 MR 3 R 4 , where “M” is one metal selected from a group consisting of Ti, Pt and one metal belonging to groups 13 and 14 of periods 3 to 5.
1. An organic EL display, comprising:
an anode electrode;
a cathode electrode;
an organic layer comprising a light-emitting layer arranged between the anode electrode and the cathode electrode, a hole transport layer arranged between the anode electrode and the light-emitting layer, and an electron transporting layer arranged between the cathode electrode and the light-emitting layer; and
at least one organic compound derivative layer arranged between the hole transport layer and the light-emitting layer or between the electron transporting layer and the cathode electrode, the organic compound derivative layer having the formula:
R 1 R 2 MR 3 R 4 ,
wherein “M” is Si, one of “R 1 ” to “R 4 ” is an alkyl group ranging from 1 to about 20 carbons, and the other three of “R 1 ” to “R 4 ” are each an acetoxy group.
2. The display of claim 1 , further comprising: a layer selected from a hole injection layer and an electron injection layer arranged between the anode electrode and the cathode electrode.
3. The display of claim 1 , wherein the organic compound derivative layer is formed using one of a dip coating technique, a spin coating technique, a roll coating technique, and a vacuum depositing technique.
4. The display of claim 1 , wherein a thickness of the organic compound derivative layer is in a range from about 1 Å to about 1000 Å.
5. The display of claim 4 , wherein the thickness of the organic compound derivative layer is about 100 Å.
6. The display of claim 1 , wherein the organic compound derivative layer has a molecular weight ranging from about 100 to about 10,000 g/mol.
7. The device of claim 1 , wherein the organic compound derivative layer further includes a surfactant.
8. The device of claim 7 , wherein the surfactant includes one selected from the group consisting of an alkyl group, an alkylaryl group, a fluoroalkyl group, and an alkylsiloxane group, a sulfate, a sulfonate, a carboxylate, an amide, a betainic structures, and a quarternized ammonium group.
9. The device of claim 7 , wherein the surfactant includes a non-ionic surfactant.
10. The device of claim 9 , wherein the non-ionic surfactant is a non-ionic fluoride-based surfactant.
11. The device of claim 7 , wherein the surfactant is in an amount ranging from about 0.1 wt % to about 0.3 wt %.