Organic electric-excitation illuminating display module and making method therefor

Abstract

The module of organic electro photoluminescence display includes organic electro photoluminescence display faceplate, flexible plate, and protective film possessing character of water-resistant antioxygen. The flexible plate includes following parts: base plate; first metal wire pattern, organic luminescence structure, second metal wire pattern, closing cap for sealing base plate in face to face. Being extended to a side of base plate, first metal wire pattern, and second metal wire pattern become area of exterior lead wire. The flexible plate is connected to the area of exterior lead wire of organic electro photoluminescence display faceplate. Through chemical vapor deposition in stair type, the protective film is deposited between flexible plate and base plate.

Description

technical field [0001] The invention relates to an organic electroluminescent display module and a manufacturing method thereof, in particular to an organic electroluminescent display module capable of resisting electric corrosion and a manufacturing method thereof. Background technique [0002] Galvanic corrosion is a failure mode existing in organic light-emitting display panels (hereinafter referred to as panels), please refer to figure 1 , as the name implies, the ITO electrode or metal electrode A arranged on the panel rots and loses its conductive function; the reason for this is that there are impurities on the surface of the ITO electrode or metal electrode A, and when the electrode is conducting, it will generate electricity with moisture or oxygen in the air. The chemical reaction, in the long run, will cause the ITO electrode and the metal electrode A to rot B and lose the conductive function, which will affect the normal function of the screen display. [0003] ...

AI Technical Summary

Problems solved by technology

In addition, the above-mentioned stacked structure of wires is often caused by the action of water and oxygen in the environment, or by frequent current driving, causing partial peeling, burning or short circuit of the stacked structure, which will cause abnormal display in the display area of ​​the display device, such as bright Situation of line or dark line

[0004] see figure 2 The first known panel 1a is connected to the soft board 2a through the extended substrate 11a, and the exposed ITO electrodes and metal electrodes on the substrate 11a are prone to rust due to the pollutants 3a attached thereto; , the known method of improving the above-mentioned electrode corrosion phenomenon, in addition to requiring the operator to wear gloves, is supplemented by wet cleaning to remove organic or inorganic substances on the surface of the terminal part of the panel; or, there is also a dry cleaning method using ultraviolet rays (UV clean) After attaching the soft board, use ultraviolet light to do dry cleaning of the joint between the soft board and the panel, by cleaning the organic or inorganic substances on the surface, to prevent it from reacting with moisture or oxygen in the air; however If there is no follow-up anti-fouling or water-proof action after cleaning, the probability of galvanic corrosion cannot be effectively reduced

[0005] see image 3 In the second known panel 1b, a layer of adhesive material 4b is covered on the junction of the substrate 11b or the joint between the soft board 2b and the substrate 11b, so as to prevent the erosion of moisture or pollutants 3b and make the ITO electrodes arranged on the substrate 11b Electrochemical reaction occurs with metal electrodes; however, since the glue material 4b is applied manually, it cannot be accurately controlled, and it is prone to uneven coating, and when the product is mass-produced, manual glue application is quite time-consuming , and reduce the efficiency of the production process; in addition, if the adhesive material 4b (ultraviolet curable adhesive, thermosetting adhesive or insulating water-blocking coating) needs to have good covering ability, its viscosity coefficient must be low, and its processability is at this time Poor, if the viscosity coefficient is increased in order to improve processability, the covering ability during coating cannot be taken into account; moreover, although for the current insulating materials, the adhesive material 4b has strong water and oxygen penetration resistance. A certain level, but the processing method may still produce tiny holes (pin holes), resulting in the inability to completely block the erosion of water vapor, and still unable to effectively reduce the probability of electrical corrosion

[0006] In addition, in addition to the above-mentioned joints, the electrolytic corrosion of the electrodes will also occur due to the incomplete coating of the metal electrodes on the left and right sides of the panel, which also affects the normal function of the screen display.

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