A high-viscosity liquid supply and discharge device
A high-viscosity, supply-and-discharge technology, which is applied to the device and coating of the surface coating liquid, can solve the problem that the nozzle is prone to bubbles, etc., and achieve the effect of improving the coating quality
Active Publication Date: 2019-12-03
WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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Problems solved by technology
[0003] In view of this, the present invention provides a high-viscosity liquid supply and discharge device, which is used to solve the problem in the prior art that the high-viscosity liquid after degassing is easy to generate bubbles in the liquid supply pipeline and nozzle, and reduce the high-viscosity liquid material. The number of air bubbles after curing improves the coating quality
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[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Apparently, the described embodiments are some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.
[0017] like figure 1 As shown, the embodiment of the present invention provides a high-viscosity liquid supply and discharge device 10 , and the supply and discharge device 10 includes a nozzle 1 , a liquid supply pipe, and a foam discharge pipe 3 . The nozzle 1 has a cavity, the bottom of the nozzle 1 is provided with a liquid outlet 11, and near the liquid outlet 11, two liquid supply pipes 21 are connected to the opposite side walls of the nozzle 1 and 22 (respect...
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Disclosed is a high-viscosity liquid supply and discharge device (10), comprising a nozzle (1), liquid supply pipes (21, 22) and a bubble discharge pipe (3), wherein the bottom of the nozzle (1) is provided with a liquid outlet end (11), the liquid supply pipes (21, 22) are respectively connected to opposite side walls of the nozzle (1) near the liquid outlet end (11), and each of the liquid supply pipes (21, 22) has one end thereof extending into a cavity of the nozzle (1); the liquid supply pipes (21, 22) are further provided with bubble sensors (23, 24); the bubble discharge pipe (3) is arranged at the top of the nozzle (1), and the bubble discharge pipe (3) is provided with bubble discharge valves (310, 320, 330); and the bubble discharge valves (310, 320, 330) are configured to be opened to discharge bubbles when the bubble sensors (23, 24) detect that bubbles exist in the liquid supply pipes (21, 22) and / or the nozzle (1). In the supply and discharge device (10), a high-viscosity liquid flows into the nozzle (1) from the liquid supply pipes (21, 22) at the two sides of the nozzle (1), and by means of the bubble sensors (23, 24) on the liquid supply pipes (21, 22) and the bubble discharge pipe (3) connected to the nozzle (1), the high-viscosity liquid without bubbles can be discharged via the liquid outlet end (11) at the bottom of the nozzle (1).
Description
technical field [0001] The invention relates to the field of flat panel display technology, in particular to a high-viscosity liquid supply and discharge device. Background technique [0002] In the field of flat panel display, such as the production of flexible substrates in flexible organic electroluminescent devices, and the production of liquid crystal alignment films or sealants in liquid crystal displays, the coating of high-viscosity materials (such as polyimide PI). Usually, the liquid of high-viscosity material is transported from the liquid supply pipeline to the slit nozzle (Slit Nozzle) after defoaming, and then sprayed and coated. Generally, the liquid supply pipeline is set above the slit nozzle. When the high-viscosity material is injected from the top of the nozzle, some air bubbles will be generated in the pipeline, and some air bubbles will remain in the high-viscosity liquid material in the nozzle and cannot be discharged, and then solidify after the high...
Claims
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IPC IPC(8): B05C5/02B05C11/10
CPCB05C5/02B05C11/10
Inventor 孙超
Owner WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD