Merck Patent Gmbh

Wuhan Xinqu Chuangrou Optoelectronics Technology Co., Ltd

Neudrive Limited

Cpi Innovation Services Limited

Simon Dominic Ogier

Janos Veres

Beverley Anne Brown

Stephen William Leeming

Richard Williams

Remi Manouk Anemian

Marco Palumbo

Keri Laura McCall

Stephen G Yeates

Soad Mohialdin-Khaffaf

Michael James Simms

Toby Cull

Paul Craig Brookes

Raymond Fisher

David Christoph Mueller

Julie Diane Ellis Jones

Stuart Edmund Willetts

Aaron James Page

Neil David Forrest

Richard Thomas Williams

Keri Laura Mccall

A semiconducting composition comprising a semiconducting polymer and a semiconducting non-polymeric polycyclic compound, wherein the semiconducting polymer comprises units of A and/or B: wherein R, R, R, R, R, R, x, y, p, q, r, R, R, R, Rand Rhave any of the meanings defined in the description.

Semiconducting compositions comprising semiconducting polymers

A semiconductor composition which comprises a soluble polyacene semiconductor and a polymeric semiconducting binder the binder having a permittivity greater than 3.4 at 000 Hz. The charge mobility of the semiconducting binder when measured in a pure state is greater than 10cm/Vs and more preferably greater than 10cm/Vs. Organic thin film transistors in which the source and drain electrodes are bridged by the semiconductor composition have desirable properties of reproducibility and charge mobility. The organic semiconducting composition can be applied by solution coating.

Transistors and methods for making them

This invention comprises a field effect transistor which comprises source and drain electrodes () which are bridged by a semiconductor which comprises semiconducting crystallites, the conductivity of the semiconductor being controlled by a gate electrode () which is insulated from the semiconductor and the source and drain electrodes, to which a potential is applied for controlling the conductivity of the semiconductor, in which at least part of the facing surfaces of the source and drain electrodes are geometrically formed such that they provide current flow of different directions between the electrodes through the said channel. By this means current is caused to flow through more orientations of the crystals resulting in greater uniformity of performance between different transistors when there is a degree of variable crystallographic orientation.

Transistors

This invention comprises a semiconducting polymer having a permittivity greater than 3.4 at 1000 Hz and a charge mobility in the pure state greater than 10cmVsand more preferably greater than 10cmVs. Preferred polymers include repeating units of triarylamines which have specific cyano and/or alkoxy substitution. They are suitable for use in electronic components such as organic thin film transistors.

Semiconductor compounds

The invention relates to a process for preparing an electronic device using a protection layer, and to improved electronic devices prepared by this process, in particular organic field effect transistors (OFETs).

Process for preparing an electronic device

An organic semiconducting layer formulation containing an organic binder which has a permittivity, &#x2208;, at 1,000 Hz of 3.3 or less and a polyacene compound of Formula A: and processes for the preparation thereof and uses thereof in various electronic devices.

Organic semiconducting layers

A compound of formula 8 and uses thereof in various electronic devices and in a formulation for ink jet printing and in an organic semiconducting layer formulation.

Organic pentacene semiconducting layers

This invention relates to organic light emitting diodes (OLEDs) and to methods for their manufacture. The invention provides an OLED element or display which enables contrast to be produced in an image. In accordance with the invention a layer of ink is patterned as a blocking layer between two OLED layers. The ink reduces or prevents conduction, i.e. movement of charge, between the two OLED layers in that area of the device. The ink may be dark in color, e.g. black, to increase the contrast ratio of the OLED. The blocking layer is provided between any two layers in the OLED and blocks the charge movement in these areas. The blocking layer may comprise a multiplicity of ink dots, the density of which determines the extent to which conduction is hindered. The blocking layer may be produced as a 'grey-scale' pattern wherein the density of dots is varied across the pattern.

Organic light emitting diodes

A composition for use as an organic semiconducting (OSC) material, the composition comprising: (i) at least one higher molecular weight organic semiconducting compound having a number average molecular weight (M) of at least 5000, and (ii) at least one lower molecular weight organic semiconducting compound having a number average molecular weight (M) of 1000 or less. Use of the composition in an electronic device, e.g. FET or OLED.

Organic semiconducting materials

The present invention relates to a process for reducing the mobility of an semiconductor (OSC) layer in an electronic device, which has a semiconducting channel area, in specific areas outside said channel area by applying an oxidzing agent to the OSC layer.

Process for making an organic field effect transistor

A compound of formula 9 and uses thereof in various electronic devices and in a formulation for ink jet printing and in an organic semiconducting layer formulation.

Organic semiconductor layers

A method for forming an organic electronic device, which method comprises the steps of: The method allows the formation of a device structure wherein the device layers to be patterned are self-aligned. The method enables a multiplicity of layers to be patterned in a single set of printing and lift-off steps using one pattern which ensures the excellent vertical alignment of edges, which would be difficult to achieve by direct printing. Horizontal alignment can also be achieved. The size of the device features can be reduced below the actual printing resolution. Examples of organic electronic devices include OFETs, OLEDs, memory, sensing elements, solar cells, photo-sensors, photoreceptors for electrophotography and the like.

Organic electronic devices

A process of manufacturing an organic field effect device is provided comprising the steps of (a) depositing from a solution an organic semiconductor layer; and (b) depositing from a solution a layer of low permittivity insulating material forming at least a part of a gate insulator, such that the low permittivity insulating material is in contact with the organic semiconductor layer, wherein the low permittivity insulating material is of relative permittivity from 1.1 to below 3.0. In addition, an organic field effect device manufactured by the process is provided.

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Sowerby Bridge, United Kingdom

Simon Dominic Ogier