Abstract:
An organic light emitting device that obtains stable image qualities through prevention of any significant decrease in brightness at high temperature. The organic light emitting device includes an anode; a cathode facing the anode; an organic emitting layer interposed between the anode and the cathode; an electron transport layer interposed between the organic emitting layer and the cathode and comprising an alkali metal compound or an alkali earth metal compound; and a buffer layer interposed between the organic emitting layer and the electron transport layer.
Abstract:
Disclosed are a light emitting display device and a method for fabricating the same. The light emitting display device according to the present embodiments includes a first substrate including a pixel region and a non-pixel region surrounding the pixel region; a plurality of light emitting diodes disposed in the pixel region of the first substrate, and each including a first electrode, a light emitting layer, and a second electrode; and a second substrate disposed to face the first substrate. Also, the light emitting display device according to the present embodiments includes a sealant by coupling the first substrate to the second substrate to encapsulate the pixel region; and a spacer disposed between the first substrate and the second substrate and provided in a non-light emission region arranged between the adjacent light emitting diodes. In this case, the spacer is disposed on the second electrode of the non-light emission region to be in contact with the second substrate.
Abstract:
An organic electroluminescent display device includes an anode electrode formed on a substrate; a buffer pattern formed under the anode electrode having a certain thickness; a pixel define layer for exposing a portion of the anode electrode; an organic thin film layer formed on the anode electrode; and a cathode electrode formed on the substrate. An upper surface of the pixel define layer is at least coplanar with or lower than that of the anode electrode. The thickness of the pixel define layer is at least substantially the same as or less than a sum of thicknesses of the anode electrode and the buffer pattern.
Abstract:
A flat display device including a display region, for displaying an image, between a first substrate and a second substrate. The flat display device includes a sealant adhering the first substrate to the second substrate, one or more interconnection lines between the sealant and the first substrate, and a covering film between the sealant and the interconnection lines.
Abstract:
An organic electroluminescent display comprises: anode electrodes of R, G and B unit pixels formed separate from each other on a substrate; organic thin-film layers of the R, G and B unit pixels formed on the anode electrodes; and a cathode electrode formed over an entire surface of the substrate. The anode electrode of at least one unit pixel, among the R, G and B unit pixels, has a thickness different from anode electrodes of the other unit pixels. The anode electrode of each of the unit pixels comprises a first film having a high reflectivity and a second film for adjusting a work function. The second film of at least one unit pixel, among the unit pixels, has a thickness different from the second films of the other unit pixels. The second film of the R unit pixel is thicker than the second films of the other unit pixels.
Abstract:
A novel phosphorescent material containing an iridium metal compound and an organic electroluminescent device using the same are provided. When used for an emissive layer of an organic electroluminescent device, the phosphorescent material offers greater luminescent efficiency and improved driving voltage characteristics, compared to conventional red luminescent materials, and reduces the amount of power consumed in the organic electroluminescent device.
Abstract:
Provided is an electroluminescent display device having a negligibly small voltage drop of a cathode, no external light reflection, and high contrast and luminance. The electroluminescent display device includes a rear substrate, a first electrode layer formed above the rear substrate, a second electrode layer formed above the first electrode layer, the second electrode layer facing the first electrode layer, a light-emitting layer interposed between the first electrode layer and the second electrode layer, the light-emitting layer having at least an emission layer, a front substrate facing the rear substrate and contacting an upper surface of the second electrode layer, and a functional thin film formed between the second electrode layer and the front substrate, the functional thin film having a conductive material at least in a portion thereof contacting the second electrode layer.
Abstract:
Provided is an electroluminescent display device having a negligibly small voltage drop of a cathode, no external light reflection, and high contrast and luminance. The electroluminescent display device includes a rear substrate, a first electrode layer formed above the rear substrate, a second electrode layer formed above the first electrode layer, the second electrode layer facing the first electrode layer, a light-emitting layer interposed between the first electrode layer and the second electrode layer, the light-emitting layer having at least an emission layer, a front substrate facing the rear substrate and contacting an upper surface of the second electrode layer, and a functional thin film formed between the second electrode layer and the front substrate, the functional thin film having a conductive material at least in a portion thereof contacting the second electrode layer.
Abstract:
A front emitting or a dual-side emitting organic electroluminescent display device which has uniform luminance. The organic electroluminescent display device includes a substrate on which a first electrode for defining at least a portion of a pixel region is formed. An organic film layer including an emitting layer is formed on the substrate, and a second electrode including a first semi-transmissive type metal layer is formed on the organic film layer. A first transmissive type conductive oxide layer is formed on the first semi-transmissive type metal layer. A second semi-transmissive type metal layer is formed on the first transmissive type conductive oxide layer, and the second transmissive type conductive oxide layer is formed on the second semi-transmissive type metal layer.
Abstract:
The present invention relates to a both-side light emitting organic EL display device including a reflection film having an opening and a first electrode formed on the reflection film and in the opening. An organic layer is formed on the first electrode, and a second electrode is formed on the organic layer. The opening corresponds to a central portion of the first electrode.