Patent application number | Description | Published |
20080284321 | Organic light-emitting display device - Provided is a top emission type organic light-emitting display device having the emission luminance thereof improved by increasing a quantity of electrons injected into an electron injection layer. At least a cathode, an electron injection layer, an electron transport layer, a light-emitting layer, a hole transport layer, and an anode are sequentially accumulated on an insulating substrate. The electron injection layer is formed with a co-deposited layer having both tris(8-hydroxyquinoline)aluminum (Alq | 11-20-2008 |
20080309225 | ORGANIC ELECTROLUMINESCENT DISPLAY DEVICE - The present invention provides an organic electroluminescent display device of high efficiency and high quality, in which the efficiency for injecting electrons from a reflective cathode is improved. The organic electroluminescent display device includes a substrate, a cathode, an organic layer, and an anode. The cathode is formed above the substrate. The organic layer has a luminescent layer and is formed on the cathode. The anode is formed on the organic layer. Light emitted from the luminescent layer is extracted through the anode. The cathode is composed of an alloy containing aluminum as a main component and as a subcomponent at least one metal of oxides whose Gibbs free energies of formation are greater than that of an aluminum oxide. | 12-18-2008 |
20090015146 | ORGANIC EL DISPLAY DEVICE - The present invention provides a top-emission-type organic EL display device, that is, an organic EL display device which can suppress changes of a threshold voltage and a light emitting start voltage, and the generation of brightness irregularities. The organic EL display device includes lower electrodes arranged on a main surface of an element substrate, a multi-layered organic EL layer arranged on the lower electrodes, and a light transmitting upper electrode arranged on the organic EL layer. A layer in contact with the lower electrode of the organic EL layer forms a hole injection layer constituted of a V | 01-15-2009 |
20090021158 | Organic electroluminescence display device - An active matrix organic electroluminescence display device is provided with a transparent pixel electrode (AD | 01-22-2009 |
20090058283 | Display device - To realize a top emission type organic electroluminescent display device which requires a small number of processes, and provides good color purity, and manufacturing yield. A transparent conduction film of 5 nm to 20 nm is formed on a lower electrode. An organic electroluminescent layer is sandwiched between the transparent conduction film and an upper electrode. The transparent conduction film is formed of indium tin oxide, and an indium tin oxide resistivity is controlled to a value of 1 to 10 | 03-05-2009 |
20090058290 | Organic EL display device - The present invention provides an organic EL display device which has a long lifetime. The organic EL display device includes a plurality of pixels each of which is constituted of a top-emission-type active matrix organic EL element. The top-emission-type active matrix organic EL element includes: a pixel electrode which is connected to an active element; a reflective layer arranged between the pixel electrode and an active element and is formed over a leveling layer; an organic light emission layer which is arranged on the pixel electrode; and a common electrode which is arranged on the organic light emission layer. The reflective layer includes: a first reflective layer which is made of high-melting-point metal; and a second reflective layer which is arranged on the first reflective layer and is made of alloy containing aluminum, an aluminum compound or aluminum silicide. The second reflective layer includes a planer pattern in which an outer periphery of the second reflective layer is surrounded by the first reflective layer. The pixel electrode covers the second reflective layer. | 03-05-2009 |
20100038635 | Organic electroluminescent display device and manufacturing method of organic electroluminescent display device - The present invention provides a top-emission-type organic EL display device. In a top-emission-type organic EL display device which includes organic EL elements each of which is formed by stacking a reflective lower electrode, a function layer and a light-transmissive upper electrode in order, the upper electrode contains a plurality of fine particles which are made of a material different from a material of the upper electrode. The fine particles are preferably made of silica. A portion of the upper electrode may be provided below the fine particles and a portion of the upper electrode may be provided above the fine particles. | 02-18-2010 |
20100141616 | Display Device And Driving Method Thereof - The present invention enhances a display quality of a display device as a task. As means for solving such a task, the present invention provides a display device including a light emitting element and a switching element in a pixel, wherein the switching element is provided for supplying a power source to the light emitting element and is constituted of a first switching element and a second switching element. The first switching element and the second switching element are configured to be operated, in response to inputting of data signals into the inside of the pixel, one switching element assumes a positive bias state and another switching element assumes a reverse bias state, and the bias states are alternately changed over between the first switching element and the second switching element in response to time-sequential inputting of the data signals, and the supply of the power source to the light emitting element is performed by way of either one of the first switching element and the second switching element. | 06-10-2010 |
20110057920 | ORGANIC ELECTROLUMINESCENCE DISPLAY DEVICE - In an organic electroluminescence display device which includes: a display region DR in which a plurality of pixels are arranged; and a power source part CC which is arranged outside the display region, each of the plurality of pixels includes: a lower electrode An; a light emitting layer stacked above the lower electrode; and an upper electrode which includes a thin silver film AG and is formed by a layer shared in common by other pixels above the light emitting layer, the upper electrode extends to the power source part for electrically connection, the thin silver film has a portion arranged between the display region and the power source part, and a background layer containing an electron pair donor is arranged as a background of at least a portion of the thin silver film between the display region and the power source part. | 03-10-2011 |