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Filtering device and filtering method

A filter device and filter method technology, applied in the direction of separation method, filter separation, filter circuit, etc., can solve problems such as product defects, and achieve the effect of improving removal efficiency and product yield

Active Publication Date: 2019-02-22
WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The application provides a filtering device and a filtering method to solve the problem that there are bubbles and gels in the existing polyimide solution, resulting in defective products in the subsequent coating process

Method used

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  • Filtering device and filtering method

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Embodiment Construction

[0041] The following descriptions of the various embodiments refer to the accompanying drawings to illustrate specific embodiments that the present application can be used to implement. The directional terms mentioned in this application, such as [top], [bottom], [front], [back], [left], [right], [inside], [outside], [side], etc., are for reference only The orientation of the attached schema. Therefore, the directional terms used are used to illustrate and understand the application, but not to limit the application. In the figures, structurally similar elements are denoted by the same reference numerals.

[0042] The present application provides a filtering device and a filtering method to solve the problem of defective products in the subsequent coating process caused by bubbles and gels in the existing polyimide solution.

[0043] see figure 1 , figure 1 It is a schematic structural diagram of the filtering device 100 provided in the first embodiment of the present appl...

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Abstract

The application provides a filtering device and a filtering method. The filtering device is used for filtering a solution. The filtering device comprises a bubble filtering system; the bubble filtering system at least comprises a first bubble filtering system and a second bubble filtering system; the first filtering system is used for performing first bubble filtering on the solution; the second filtering system is used for performing second bubble filtering on the solution, wherein the filtering precision of the second filtering system is higher than that of the first filtering system. According to the application, gel and bubbles in the solution are subjected to graded filtering by designing the filtering device and the filtering method, so that the removal efficiency of the bubbles andthe gel in the solution can be improved, and then, the product yield in a subsequent coating process is improved.

Description

technical field [0001] The present application relates to the technical field of display production, in particular to a filtering device and a filtering method. Background technique [0002] At present, flexible active matrix organic light-emitting diode (Flexible AMOLED) devices are mainly developed and manufactured based on polyimide, and polyimide is usually coated by slit coating or spin coating. The imine (PI) liquid is coated on the glass substrate, followed by drying and baking. [0003] Existing polyimide solutions often contain a large number of micron-sized bubbles and gels, and the bubbles cannot be effectively squeezed out during and after coating. In the subsequent drying and baking stages, these bubbles will The pores of a certain size (1-4 μm) are diffused on the surface of the polyimide, and these pores will fall off in the subsequent process. This seriously affects the stability of the subsequent process. [0004] The method commonly used at present to re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D36/00
CPCB01D36/001B01D19/0031B01D19/0068
Inventor 王选芸
Owner WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD