Flexible organic electroluminescence display (OELD) and manufacture method thereof

Abstract

The invention discloses a manufacture method of a flexible organic electroluminescence display (OELD). The manufacture method comprises the following steps of: (1) taking an FPC (Flexible Printed Circuit) base material comprising a first Cu layer, a PI layer and a second Cu layer, and photoetching the second Cu layer to obtain a required first electrode pattern; (1) processing the first electrode pattern to obtain a substrate; (3) evaporating an organic electroluminescence material and a second electrode on the substrate in sequence; (4) packaging to form a device; and (5) binding IC (Integrated Circuit) to obtain the flexible OELD. According to the manufacture method of the flexible OELD, disclosed by the invention, FPC in COF (Chip on Flex) is used as the base material to manufacture the flexible OELD, is good in flexibility and strong in electroconductivity, and can be used to completely isolate the influence of water vapor to OELD, so that the advantages of a plastic thin film and a stainless sheet are combined, the permeation of the water vapor and oxygen on the surface of the base material can be isolated completely, and by adoption of a process of etching one Cu layer in the FPC, the manufacture method is suitable for mass production.

Description

technical field [0001] The invention relates to a manufacturing method of an organic electroluminescent display, in particular to a flexible organic electroluminescent display and a manufacturing method thereof. Background technique [0002] Organic electroluminescent display, or OLED for short, is a new type of flat panel display, because it has many advantages such as active light emission, high contrast, fast response speed, thin and light, etc., it is known as a new generation of display that can replace liquid crystal display (LCD for short) . The principle of luminescence is to insert various functional layers between the anode and the cathode, including charge injection layer, charge transport layer and light-emitting layer, and apply an appropriate voltage between the electrodes to make the device emit light. The structure diagram of OLED is shown in figure 1 As shown, it includes: substrate 11, generally made of glass ion; anode 12, generally ITO transparent condu...

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Problems solved by technology

However, the plastic film has poor temperature resistance, and many high-temperature environments in the OLED manufacturing process cannot be tolerated by the plastic film; and the plastic film has poor water resistance, resulting in a short OLED life. In order to improve the water resistance, it is necessary to evaporate and coat multi-layer resistance. Water materials, resulting in complicated process, not suitable for mass production

Although the stainless steel film has good flexibility, temperature and water resistance, its roughness is too high, and it will still have a high roughness after polishing. It is too high for OLED devices and is still not suitable.

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