An active organic electroluminescent display and making method thereof
A technology of electroluminescence and manufacturing method, which is applied in the direction of electroluminescence light source, electric light source, static indicator, etc., and can solve problems such as short circuit of pixels, poor flatness, and reduction of luminous efficiency of organic electroluminescence components.
Inactive Publication Date: 2007-12-26
TPO DISPLAY
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Problems solved by technology
However, due to the poor surface flatness of the organic material, the surface average roughness (roughness average, Ra) of the transparent conductive layer formed on it is as high as 3-4nm, which is about the applicable standard for general transparent conductive layers (the average roughness is about 1nm), which seriously reduces the luminous efficiency of the organic electroluminescence component, and its uneven tip will cause a tip discharge effect, causing the organic layer to be broken down, resulting in a short circuit of the pixel
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[0125] First, a substrate 10 is provided, please refer to FIG. 5( a ). The substrate is a transparent substrate, which can be made of light-transmitting glass or plastic. If it is a plastic substrate, its material can be polyethylene terephthalate, polyester, polycarbonates, polyacrylates or polystyrene. A buffer layer 30 is formed on the substrate 10, and a gate insulating layer 32 and a plurality of transistors 20 are formed on the buffer layer 30 to serve as a control circuit of the organic electroluminescence display. The transistor is a thin film transistor (thin film transistor, TFT), which may be a polysilicon thin film transistor, an amorphous silicon thin film transistor, or an organic thin film transistor. Next, a first cladding layer 34 made of dielectric material is formed on the surface of the transistor and other areas of the substrate, exposing the drain 21 of the transistor to be connected with the pixel electrode. Here, the method of forming the first claddi...
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Abstract
An active driving organic electroluminescent display and process for making the same, wherein the display comprises, a substrate, a plurality of transistors formed on the substrate as the control circuit of the display, a first coating layer consisting of dielectic material formed on the substrate and the transistors, a second coating layer consisting of organic material formed on the first coating layer, a pixel electrode formed in a predetermined area of the pixel electrode, an insulation layer formed at least on the two side walls of the pixel electrode and on the second coating layer, an organic light-emitting diode material layer, and a sheet metal formed on the organic light-emitting diode material layer as its cathode.
Description
technical field [0001] The present invention relates to an active organic electroluminescent (AM-OLED) display and a manufacturing method, in particular to a method for manufacturing an active organic electroluminescent (AM-OLED) display with a structure for improving the surface roughness of an anode transparent conductive layer Specifically speaking, it is a method for manufacturing an active organic electroluminescence display. Background technique [0002] Organic light emitting diode (OLED; organic light emitting diode) is a light emitting diode that uses an organic layer as the active layer. It has been gradually used in flat panel displays in recent years. According to the driving method, it can be divided into passive active Electromechanical Luminescent (PM-OLED) and Active Organic Electroluminescent (AM-OLED) displays. Active organic electroluminescence (AM-OLED) display is based on the principle of adding current to a specific organic thin film layer to convert e...
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IPC IPC(8): H01L51/50H01L51/56H05B33/12G09G3/34H05B33/10
Inventor 张世昌谢秀春蔡耀铭
Owner TPO DISPLAY