Merck Patent Gmbh

Merck Kgaa

Hsin-Rong Tseng

Gaëlle Béalle

Christoph Leonhard

Anja Jatsch

Manuel Hamburger

Irina Martynova

Aurélie Ludemann

Philip Edward May

Edgar Kluge

Peter Levermore

Pawel Miskiewicz

Margarita Wucherer-Plietker

Li Wei Tan

Daniel Walker

Thorsten Schenk

Beate Burkhart

Katja Scheible

Dietmar Kunkel

Leticia Garcia Diez

Gaelle Béalle

Sabine Knippel

Katja Maria Scheible

Gaëlle Bealle

The present invention relates to a method for forming an organic element of an electronic device having at least two different pixel types including a first pixel type (pixel A) and a second pixel type (pixel B), —wherein at least one layer of pixel A is deposited by applying an ink A containing at least one organic functional material A and at least one solvent A by a printing process, —wherein at least one layer of pixel B is deposited by applying an ink B containing at least one organic functional material B and at least one solvent B by a printing process, —wherein at least one organic functional material A and at least one organic functional material B are different, and —wherein at least one solvent A and at least one solvent B are different, characterized in that both inks, ink A and ink B, in addition contain at least one common solvent S, and characterized in that the boiling point of solvent A and the boiling point of solvent B is at least 10° C. lower than the boiling point of the common solvent S.

Method for forming an organic element of an electronic device

The present invention relates to formulations for the preparation of organic electronic devices (OLEDs) which comprise (A) at least one specific ester solvent containing an aromatic group and (B) at least one organic functional material selected from organic conductors, organic semiconductors, organic fluorescent compounds, organic phosphorescent compounds, organic light-absorbent compounds, organic light-sensitive compounds, organic photosensitisation agents and other organic photoactive compounds, selected from organometallic complexes of transition metals, rare earth metals, lanthanides and actinides.

Esters containing aromatic groups as solvents for organic electronic formulations

The present invention relates to a formulation containing at least one organic functional material and at least three different organic solvents, selected from at least two different organic solvents A and at least one organic solvent B, wherein at least one organic solvent A has a boiling point in the range from 250 to 350&#xb0; C. and a viscosity of &#x2265;15 mPas, the at least one organic solvent B has a boiling point in the range from 200 to 350&#xb0; C. and a viscosity of &#x2264;10 mPas, and the solubility of the at least one organic functional material in the second organic solvent B is &#x2265;5 g/l; as well as to electroluminescent devices prepared by using these formulations.

Formulation of an organic functional material

The present invention relates to a formulation containing at least one organic functional material and at least four different organic solvents, a first organic solvent A, a second organic solvent B, a third organic solvent C, and a fourth organic solvent D, wherein the first organic solvent A comprises a group, which is capable of receiving or giving a hydrogen bonding, the second organic solvent B has a boiling point in the range from 50 to 350&#xb0; C., the third organic solvent C has a boiling point in the range from 100 to 300&#xb0; C., and the fourth organic solvent D has a boiling point in the range from 200 to 400&#xb0; C., is present in an amount from 0.01 to 1 vol.-% and has a viscosity of &#x2265;15 mPas, the solubility of the at least one organic functional material in the second organic solvent B and in the fourth organic solvent D is &#x2265;5 g/l, the boiling point of the third organic solvent C is at least 10&#xb0; C. lower than the boiling point of the second organic solvent B; and the boiling point of the fourth organic solvent D is at least 10&#xb0; C. higher than the boiling point of the second organic solvent B; as well as to electroluminescent devices prepared by using these formulations.

The present invention relates to a formulation containing at least one organic functional material and at least two different solvents, a first organic solvent A and a second organic solvent B, wherein the first organic solvent A comprises a group, which is capable of receiving or giving a hydrogen bonding, and wherein the second organic solvent B has a boiling point in the range from 150 to 350&#xb0; C. and the solubility of the at least one organic functional material in the second organic solvent is &#x2265;5 g/l.

The present invention relates to formulations comprising at least one organic semiconductor and at least one organic solvent, characterized in that the formulation contains less than 100 ppm of phenole type impurities, to their use for the preparation of electronic devices, to methods for preparing electronic or optoelectronic devices using the formulations of the present invention, and to electronic or optoelectronic devices prepared from such methods and formulations.

Formulations with a low content of phenol type impurities

The present invention relates to a method for forming an organic EL element having at least one pixel type comprising at least three different layers including a hole injection layer (HIL), a hole transport layer (HTL) and an emission layer (EML), characterized in that the HIL, the HTL and the EML of at least one pixel type are obtained by depositing inks wherein the layers are annealed after said depositing steps in a first, second and third annealing step and the difference of the annealing temperature of the first and of the second annealing step is below 35&#xb0; C., preferably below 30&#xb0; C., more preferably below 25&#xb0; C. and the annealing temperature of the third annealing step is no more than 5&#xb0; C. above the annealing temperature of the first and/or the second annealing step, preferably the annealing temperature of the third annealing step is equal to or below the annealing temperature of the first and the second annealing step, wherein the first annealing step is performed before the second annealing step and the second annealing step is performed before the third annealing step.

Method for forming an organic electroluminescence (EL) element with annealing temperatures for different pixels

The present invention relates to formulations containing at least one organic functional material and at least a first organic solvent, wherein said first organic solvent is an alkyl benzoate solvent, as well as to electronic devices prepared by using these formulations.

The present invention relates to formulations for the preparation of organic electronic devices which comprise at least one specific ketone solvent containing a non aromatic cycle and at least one organic functional material, preferably selected from organic conductors, organic semiconductors, organic fluorescent compounds, organic phosphorescent compounds, organic light-absorbent compounds, organic light-sensitive compounds, organic photosensitisation agents and other organic photoactive compounds, selected from organometallic complexes of transition metals, rare earths, lanthanides and actinides.

Formulations containing ketones comprising non-aromatic cycles

The present invention relates to a formulation containing at least one organic functional material and at least two different organic solvents, a first organic solvent A and a second organic solvent B, wherein the first organic solvent A has a boiling point in the range from 250 to 350&#xb0; C. and a viscosity of &#x3e;15 mPas, the second organic solvent B has a boiling point in the range from 200 to 350&#xb0; C. and a viscosity of &#x2264;10 mPas, the solubility of the at least one organic functional material in the second organic solvent B is &#x2265;5 g/l, and the boiling point of the first organic solvent A is at least 10&#xb0; C. higher than the boiling point of the second organic solvent B; as well as to electroluminescent devices prepared by using these formulations.

The present invention relates to formulations for the preparation of organic electronic devices which comprise at least one specific A/JV-dialkylaniline and at least one organic functional material selected from organic conductors, organic semiconductors, organic fluorescent compounds, organic phosphorescent compounds, organic light-absorbent compounds, organic light-sensitive compounds, organic photosensitisation agents and other organic photoactive compounds, selected from organometallic complexes of transition metals, rare earths, lanthanides and actinides.

Formulations containing N,N-dialkylaniline solvents

Described herein is a process for the preparation of an electronic device such as an organic electroluminescent device (OLED), wherein two adjacent functional layers having an interface are formed from solution in a kinetically controlled manner. The process is particularly suitable for fast and efficient production of electronic devices by printing or coating processes. The description further relates to an electronic device which is obtainable by said process.

Process for making electronic device

The present invention relates to a method for forming an organic element of an electronic device having at least two different pixel types including a first pixel type (pixel A) and a second pixel type (pixel B) wherein at least one layer of the pixel A and one layer of pixel B are deposited by applying an ink at the same time, characterized in that the ink for manufacturing a layer for the pixel A and the ink for manufacturing a layer for the pixel B which are deposited at the same time are different and the layer obtained by depositing the ink for manufacturing a layer for the pixel A and the layer obtained by depositing the ink for manufacturing a layer for the pixel B are dried thereafter, wherein the relative difference of the drying time (t&#x2212;t/t) of both layers being deposited at the same time and being obtained by two different inks for manufacturing a layer for the pixel A and a layer for the pixel B is at most 0.5 wherein tis the drying time of the layer of one pixel type and tis the drying time of the layer of the other pixel type and tis greater than or equal to t.

The present invention relates to formulations for the preparation of organic electronic devices (OLEDs) which comprise at least one specific ester solvent containing a non aromatic cycle and at least one organic functional material selected from organic conductors, organic semiconductors, organic fluorescent compounds, organic phosphorescent compounds, organic light-absorbent compounds, organic light-sensitive compounds, organic photosensitisation agents and other organic photoactive compounds, selected from organometallic complexes of transition metals, rare earths, lanthanides and actinides.

Growing community of inventors

Frankfurt am Main, Germany

Hsin-Rong Tseng