Material coating equipment and control method thereof

Abstract

The embodiment of the invention provides material coating equipment and a control method thereof, relates to the field of preparation of display devices, and can improve the control precision of silica gel coating flow. The material coating equipment comprises a storage cavity, an air pressure cavity, a flow adjusting rod, an air pressure adjusting device and an air supply source. The flow adjusting rod penetrates through the storage cavity, and is provided with an adjusting head at one end near a discharge port of the storage cavity; and one end, deviated from the discharge port, of the flow adjusting rod is connected with a piston in the air pressure cavity. An output end of the air pressure adjusting device is connected with the air pressure cavity, and an input end of the air pressure adjusting device is connected with the air supply source for receiving a preset material flow of the discharge port to convert the preset material flow into a preset air pressure value, matched with the preset material flow, of the air pressure cavity and controlling the flow of gas output to the air pressure cavity by the air supply source according the preset air pressure value. The material coating equipment is used for coating materials.

Description

technical field [0001] The invention relates to the field of display device preparation, in particular to a material coating device and a control method thereof. Background technique [0002] TFT-LCD (ThinFilmTransistorLiquidCrystalDisplay, Thin Film Transistor Liquid Crystal Display), as a flat panel display device, is more and more used in high performance display field. [0003] The array substrate of the TFT-LCD includes a display area and a non-display area located around the display area. The above-mentioned non-display area is used for setting circuit structures such as driving circuits, data leads, and data terminals. In order to protect the components or lines in the above circuit structure, silica gel is usually coated on the surface of the circuit structure, so as to avoid damage to the circuit structure caused by external water, oxygen and dust, and reduce the aging rate. [0004] Existing silicone coating devices such as figure 1 As shown, a storage cavity 1...

AI Technical Summary

Problems solved by technology

[0005] However, since the above-mentioned knob-type regulating valve 102 needs to be manually adjusted, the adjustment accuracy is low, resulting in a large deviation between the amount of silica gel finally coated and the amount of silica gel set in advance, resulting in the undesirable phenomenon of uneven coating, and then reduced product quality

And when the above-mentioned poor coating occurs, it is necessary to stop the machine, adjust the knob-type regulating valve 102 again, and remove the silica gel in the bad position for re-coating, thereby increasing the length of the preparation process and reducing production efficiency

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