Condensing mechanism and decompression drying device
A decompression drying device and condensing surface technology, which is applied to printing devices, typewriters, printing, etc., can solve the problems of long interval time, uneven film quality, and large difference in drying degree of ink materials, and achieve different evaporation conditions. Reduce, ensure the uniformity of film formation, and avoid the effect of excessive difference in drying atmosphere
Active Publication Date: 2020-12-29
GUANGDONG JUHUA PRINTING DISPLAY TECH CO LTD
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but if figure 2 As shown, for a large-sized glass substrate 140, because the interval between the area A that is inkjet printed first and the area B that is inkjet printed later is too long, the difference in the drying degree of the ink material is too large, and the subsequent drying under reduced pressure After treatment, there will be uneven film quality
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[0022] In order to facilitate the understanding of the present invention, the following will describe the present invention more fully and give preferred embodiments of the present invention. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.
[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.
[0024] Such as image 3 and ...
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The invention relates to a condensing mechanism and a decompression drying device. The condensing mechanism comprises a condensing base plate and condensing movable plates, wherein one surface of thecondensing base plate is a condensing surface, and the condensing surface is arranged towards a sample platform; and the condensing movable plates are positioned between the condensing base plate andthe sample platform and each condensing movable plate has a first state and a second state, wherein the first state is a state that the condensing movable plates are attached to the condensing surface; and while the second state is a state that the condensing movable plates are not attached to the condensing surface. When the condensing mechanism is used, the condensing movable plates corresponding to the ink-jet printing starting area can be switched to the second state, so that the evaporation speed of an organic solvent in an area, corresponding to the condensing movable plates, on a glasssubstrate is lower than that in other areas. Therefore, the difference of evaporation conditions on the whole glass substrate can be reduced, so that film forming uniformity during a decompression drying process is guaranteed.
Description
technical field [0001] The invention relates to the field of display technology, in particular to a condensation mechanism and a decompression drying device. Background technique [0002] In terms of production, some functional materials in OLED can be produced by inkjet printing process, such as hole injection layer (HIL), hole transport layer (HTL), light emitting layer material (EML), etc. Such as figure 1 As shown, the functional layer material ink 130 is printed into the pixel pit 110 by the inkjet printing head 120 in an inkjet printing manner. Among the factors affecting the efficiency of OLED devices, the uniformity of film formation of each functional layer material is a very important point of investigation. In the OLED device manufacturing process, a step that has a great influence on the uniformity of ink material film formation is the decompression drying process. The volatilization rate of solvent components in the ink and the air pressure control in the cavi...
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IPC IPC(8): B41J3/407B41J11/00B41J29/377
CPCB41J3/4073B41J11/0015B41J29/377
Inventor 柳开郎
Owner GUANGDONG JUHUA PRINTING DISPLAY TECH CO LTD