Abstract:
PURPOSE: An organic light emitting display device and a driving method thereof are provided to display the images with various colors by the gray scale of various steps by inserting at least one additional bit signal for an additional sub frame. CONSTITUTION: A driving transistor(T2) switches the current supply to an OLED by an image signal. A current controller includes a plurality of current control transistors(T3,T4) controlling an amount of currents to the OLED. A driving transistor operates in a linear region. Current control transistors operate at a saturation region. A storage capacitor stores an image signal. A switching transistor stores the image signal in a storage capacitor.
Abstract:
An etchant for the source of an oxide semiconductor thin film transistor and a drain electrode, and a method for preparing an oxide semiconductor thin film transistor by using the etchant are provided to prevent the back etching of an oxide semiconductor and the dissolution of an oxide semiconductor and to improve etching rate. An etchant for the source of an oxide semiconductor thin film transistor and a drain electrode comprises hydrogen peroxide, ammonium hydroxide, and water. A manufacturing method of an oxide semiconductor thin film transistor comprises the steps of forming a gate on a substrate(110), and forming a gate insulating layer(114) on the substrate so as to cover the gate; forming a channel layer(116) comprising an oxide semiconductor on the gate insulating layer; and forming a metal layer for the formation of a source and a drain electrode at on both surfaces of the channel layer, and pattering it by using the etchant to form a source and drain electrodes(118a,118b).
Abstract:
PURPOSE: An organic semiconductor device and a manufacturing method thereof are provided to improve electrical characteristics of the organic semiconductor device by reducing contact resistance between a metal electrode and the organic semiconductor. CONSTITUTION: A gate electrode(124) is formed on a substrate. A gate insulating layer(140) is formed on the gate electrode. A source electrode(173) and a drain electrode(175) are formed on the gate insulating layer. An organic semiconductor(154) is formed on the source electrode and the drain electrode. A self-assembled monolayer(163) is formed between the organic semiconductor and the source electrode. A self-assembled monolayer(165) is formed between the organic semiconductor and the drain electrode.
Abstract:
PURPOSE: A self-assembled monolayer composition is provided to increase processing efficiency by enhancing a formation rate of the self-assembled monolayer and to improve properties of a thin film transistor. CONSTITUTION: A self-assembled monolayer composition comprises an alkoxy silane compound, base catalyst and organic solvent. A method for manufacturing a thin film transistor comprises the steps of: forming a gate electrode; forming a gate insulating layer on the gate electrode; forming a source electrode and a drain electrode on the gate insulating layer; forming the self-assembled monolayer on the gate insulating layer using the composition for a self-assembled monolayer; and forming an organic semiconductor on the self-assembled monolayer.