Abstract: A donor substrate for a laser induced thermal imaging method and an organic electroluminescent display device fabricated using the same are provided. The donor substrate may be constructed with base film; a light-to-heat conversion layer formed on the base film; a buffer layer formed on the entire surface of the light-to-heat conversion layer; a metal layer formed on the buffer layer; and a transfer layer formed of an organic material and formed on the metal layer, thereby enhancing the characteristics of a transfer pattern by transferring a small molecular material using the laser induced thermal imaging method.

Abstract: A display device includes an underlying layer formed over a substrate; an insulating layer formed over the substrate to expose the underlying layer; and an organic EL layer formed on the exposed portion of the underlying layer, wherein a thickness of the insulating layer is formed to a predetermined thickness to prevent defects in the organic EL layer that can occur in an edge portion of the exposed portion.

Abstract: Methods of fabricating an OLED and a donor substrate are provided. The method includes: preparing a base substrate of a donor substrate; forming a light to heat conversion layer and a transfer layer on the base substrate; preparing a donor substrate including performing a dry cleaning process after forming the transfer layer; preparing a substrate, on which the transfer layer of the donor substrate is to be transferred; laminating the donor substrate and the substrate; and patterning the transfer layer by irradiating a laser to transfer the transfer layer on the substrate.

Abstract: A display device includes an underlying layer formed over a substrate; an insulating layer formed over the substrate to expose the underlying layer; and an organic EL layer formed on the exposed portion of the underlying layer, wherein a thickness of the insulating layer is formed to a predetermined thickness to prevent defects in the organic EL layer that can occur in an edge portion of the exposed portion.

Abstract: A thin film transistor (TFT) including a semiconductor film that may be simply patterned, a method of manufacturing the TFT, a flat panel display (FPD) including the TFT, and a method of manufacturing the FPD. The TFT includes a gate electrode, source and drain electrodes electrically insulated from the gate electrode, and a semiconductor film electrically insulated from the gate electrode and including source and drain regions coupled to the source and drain electrodes, respectively, and a channel region coupling the source and drain regions. The semiconductor film has a groove that isolates the channel region from an adjacent TFT.

Abstract: Relating to a method for fabricating an organic electroluminescent display having improved surface flatness and thickness uniformity as well as an improved image quality at edge regions of a pattern, a method for fabricating an organic electroluminescent display includes the steps of: forming a first electrode layer on a transparent substrate, the first electrode layer being a positive electrode; forming an assistant layer on the first electrode layer; forming an organic luminescent layer on the assistant layer by scanning a donor film using a laser beam, the donor film being disposed on the substrate having luminescent materials for R, G, and B; removing the donor film; and forming a second electrode layer on the organic luminescent layer, the second electrode layer being a negative electrode, wherein the step of forming an organic luminescent layer comprises the step of dithering the laser beam in a direction perpendicular to a scanning direction of the laser beam.

Abstract: A display device includes an underlying layer formed over a substrate; an insulating layer formed over the substrate to expose the underlying layer; and an organic EL layer formed on the exposed portion of the underlying layer, wherein a thickness of the Insulating layer is formed to a predetermined thickness to prevent defects in the organic EL layer that can occur in an edge portion of the exposed portion.

Abstract: A donor film for laser induced thermal imaging method having a base film, a light-to-heat conversion layer formed on the base film, a reflection layer or a metal layer formed on the light-to-heat conversion layer, and a transfer layer formed on the reflection layer and formed of an organic material. The donor film is capable of reducing an edge open defect and increasing The amount of energy absorbed into the light-to-heat conversion layer by forming either the reflection layer or the metal layer between the light-to-heat conversion layer and the transfer layer, preventing damage of the substrate by not transmitting a laser beam to the substrate and prevents deterioration of the transfer layer by preventing gas generated from the light-to-heat conversion layer by heat from penetrating into the transfer layer and dissipating heat transferred to the transfer layer well into the transfer layer.

Abstract: A donor substrate for laser transfer comprises: a base film; a light-to-heat conversion layer formed on the base film; and a transfer layer formed of an organic material on the light-to-heat conversion layer. The transfer layer contains a thermosetting electroluminescent material, and an organic electroluminescence display device is manufactured using the same. Thus, R, G and B emission layers are simply formed with a fine pattern by a thermal curing process after laser transfer. As a result, the emission layers are not damaged, and the manufacturing cost of a full-color organic electroluminescence display device is reduced due to employment of a simplified mask process. The donor substrate is advantageous to use in the manufacture of a large-sized organic electroluminescence display device.

Abstract: A donor substrate for laser induced thermal imaging method and an electroluminescence display device fabricated using the donor substrate and provides an organic electroluminescence display device having superior characteristics of emitting layer by protecting transfer layer from excessive heat by providing a donor substrate for laser induced thermal imaging comprising a base substrate, a light-heat converting layer formed on an upper part of the base substrate; and a transfer layer formed on an upper part of the light-heat converting layer and formed of an organic material, wherein a light absorbing material contained in the light-heat converting layer to generate heat by absorbing laser has a concentration gradient in a direction form a base substrate side to a transfer layer side in the light-heat converting layer, and an organic electroluminescence display device fabricated using the donor substrate.

Abstract: An organic electroluminescence display device made by a laser induced thermal imaging process has a substrate having first and second electrode layers, and an organic layer having red, green, and blue light-emitting layers between the electrode layers. Thermosetting light-emitting materials are used to form the red, green, and blue light-emitting layers, and a laser is then selectively irradiated onto a light-to-heat conversion layer formed on the substrate to deliver heat energy converted from light energy through the light-to-heat conversion layer to the thermosetting light-emitting materials so that curing is progressed to form patterned light-emitting layers. In accordance with the fabrication method of the present invention, the light-emitting materials may be patterned using a laser, thereby fabricating a large scaled organic electroluminescence display device and simplifying the process by not using a mask when the light-emitting layers are formed.

Abstract: A thermal transfer element that a radiation absorber contained in a light-to-heat conversion layer has a concentration gradient and laser-transfers an organic thin-film layer. The thermal transfer element includes a base substrate which is a support substrate; a light-to-heat conversion layer formed on the base substrate, converting incident light to heat energy and containing a radiation absorber; and a transfer layer for image formation, wherein the radiation absorber of the light-to-heat conversion layer has a concentration distribution that the concentration is lower as it is closer to the transfer layer. The radiation absorber of the light-to-heat conversion layer has a concentration distribution that the concentration is gradually or stepwise decreased as it is farther from the base substrate and as it is closer to the transfer layer.

Abstract: The invention is directed to an organic electroluminescent (EL) display device having an improved light extracting efficiency due to a photonic crystal layer formed proximate one side of a stack. Among other elements, the stack may include a first electrode formed on a substrate, an organic light emitting layer formed above the first electrode, and a second electrode formed above the organic light emitting layer. Additionally, the photonic crystal layer may be configured to correspond to a wavelength of colored light. An organic EL display device having an improved light extracting efficiency may be manufactured using a thermal transfer donor film to adhere the photonic crystal layer to the stack.

Abstract: An organic light emitting display which is constructed with a TFT substrate having an insulating substrate and a TFT that has at least a source electrode and a drain electrode, a lower electrode formed on the TFT substrate and connected to one of source/drain electrodes, an insulating layer having an opening that exposes a portion of the lower electrode, an organic thin film layer formed on the exposed portion of the lower electrode and the insulating layer, and an upper electrode formed on the organic thin film layer, wherein the insulating layer has a taper angle less than 40° at an edge of the opening, and a step less than or equal to 3,000 ? is formed between the lower electrode and the organic thin film layer. The organic light emitting display can prevent device failure.

Abstract: A donor substrate for a full-color organic electroluminescent display device includes: a base film; a light-to-heat conversion layer formed on the base film; and a transfer layer formed on the light-to-heat conversion layer. The transfer layer is an organic layer including a patterned organic electroluminescent material. Accordingly, it is possible to manufacture a high definition and large-sized organic electroluminescent display device in which misalignment does not occur upon forming an emission layer. The donor substrate and a full-color organic electroluminescent display device including the donor substrate are manufactured by methods according to the present invention.

Abstract: A display device includes an underlying layer formed over a substrate; an insulating layer formed over the substrate to expose the underlying layer; and an organic EL layer formed on the exposed portion of the underlying layer, wherein a thickness of the insulating layer is formed to a predetermined thickness to prevent defects in the organic EL layer that can occur in an edge portion of the exposed portion.

Abstract: An organic electro luminescent display with auxiliary layers on a cathode contact and an encapsulating junction region to easily remove polymer organic layers of the junction and a method for fabricating the same. The organic electro luminescent display has the first electrode formed on a lower insulating substrate, a pixel defining layer formed to make some portions of the first electrode opened over the entire surface of the lower insulating substrate, an organic emission layer formed on an opening of the first electrode, the second electrode formed on the organic emission layer, an upper substrate for encapsulating the first electrode, the organic emission layer and the second electrode, and auxiliary layers formed on the cathode contact and the encapsulating junction region of the lower insulating substrate.

Abstract: A low molecular weight full color organic electroluminescent device and a method to fabricate the low molecular weight full color organic electroluminescent device enable scale-up and mass-production of an organic electroluminescent device of high resolution by providing a donor film of a low molecular weight full color organic electroluminescent device, the donor film including a substrate film; a photothermal conversion layer formed on the upper part of the substrate film; and a transfer layer formed on the upper part of the photothermal conversion layer and formed of a low molecular weight material. A part of the transfer layer that is irradiated and heated by a laser is separated from the photothermal conversion layer according to a change of an adhesion force of the transfer layer with the photothermal conversion layer, while part of the transfer layer which is not irradiated by the laser is fixed to the photothermal conversion layer.

Abstract: A display device includes an underlying layer formed over a substrate; an insulating layer formed over the substrate to expose the underlying layer; and an organic EL layer formed on the exposed portion of the underlying layer, wherein a thickness of the insulating layer is formed to a predetermined thickness to prevent defects in the organic EL layer that can occur in an edge portion of the exposed portion.

Abstract: In a method for fabricating an organic electroluminescent display, a first electrode layer is formed on a transparent substrate, and a hole transport layer is formed on the first electrode layer. After an organic luminescent layer is formed on the hole transport layer by scanning a donor film disposed on the substrate using a laser beam, the donor film is removed and then a second electrode is formed on the organic luminescent layer. The laser beam dithers while performing the scanning operation to make the energy distribution uniform.