Sealant coating equipment for liquid crystal panel and its coating method

Patent metadata

Field	Value
Publication number	US-9250478-B2
Application number	US-201113375439-A
Country	US
Kind code	B2
Filing date	Oct 26, 2011
Priority date	Oct 14, 2011
Publication date	Feb 2, 2016
Grant date	Feb 2, 2016

Abstract

The present invention discloses a sealant coating equipment of a liquid crystal panel which comprises a nozzle, the nozzle is used for sealant coating of substrates required to be sealant-coated, the equipment further comprises a monitoring and detecting device. When the nozzle is performing sealant coating, the monitoring and detecting device is used for instantaneously acquiring images after the sealant coating is performed by the nozzle, determining if there are defects of sealant coating according to the acquired images, and recording location data of defective sealant coatings when determining that there are the defective sealant coatings. When the nozzle finishes the sealant coating, the monitoring and detecting device is further used for displaying images of the defective sealant coatings and locations data of the defective sealant coatings. The present invention further discloses a sealant coating method of a liquid crystal panel.

First claim

What is claimed is:

1. A sealant coating method of a liquid crystal panel, characterized in that: the method comprises following steps of:
providing a sealant coating equipment and a liquid crystal panel substrate required to be sealant-coated, the sealant coating equipment comprises a nozzle and a monitoring and detecting device, wherein the monitoring and detecting device is correspondingly connected with the nozzle, and is disposed with the nozzle according to a predetermined angle, wherein the predetermined angle includes a vertically set first preset inclined angle θ 1 , and a horizontally set second preset inclined angle θ 2 , wherein each of θ 1 and θ 2 is less than 90 degrees;
coating a sealant onto the liquid crystal panel substrate by the nozzle to form a sealant coating;
instantaneously acquiring images via the monitoring and detecting device while coating the sealant by the nozzle;
determining defects in the sealant coating by the monitoring and detecting device;
after determining the defects in the sealant coating, recording location data of the defects by the monitoring and detecting device; and
after recording the location data of the defects, displaying images of the defects in the sealant coating and the location data of the defects by the monitoring and detecting device when the nozzle finishes coating the sealant;
wherein the step of determining the defects in the sealant coating by the monitoring and detecting device includes a step of:
comparing the acquired images with pre-stored standard images by the monitoring and detecting device.

2. The sealant coating method of a liquid crystal panel as claimed in claim 1 , characterized in that: before the step of instantaneously acquiring images via the monitoring and detecting device while coating the sealant by the nozzle, the method further includes following steps of:
storing of control data by the monitoring and detecting device;
wherein the images are acquired according to the control data including a moving speed, an image reading view and an image acquiring frequency of an image acquiring unit.

3. The sealant coating method of a liquid crystal panel as claimed in claim 2 , characterized in that: the monitoring and detecting device includes the image acquiring unit, an image processing unit and a control and display unit, wherein
the images are acquired by the image acquiring unit while coating the sealant by the nozzle;
the defects in the sealant coating are determined by the image processing unit, and the location data of the defects in the sealant coating is recorded by the image processing unit; and
the control data is pre-stored by the control and display unit, and the images of the defects in the sealant coating and the location data of the defects are displayed by the control and display unit.

Assignees

• Lee Chien-Pang
• Shenzhen China Star Optoelect

Inventors

• Lee Chien-Pang

Classifications

• B05C5/0204

  for applying liquid or other fluent material to the edges of essentially flat articles · CPC title

• G02F1/1309

  Repairing; Testing · CPC title

• B05D1/26

  performed by applying the liquid or other fluent material from an outlet device in contact with, or almost in contact with, the surface · CPC title

• B05C5/0216

  by relative movement of article and outlet according to a predetermined path · CPC title

• G02F1/1339 Primary

  Gaskets; Spacers; Sealing of cells · CPC title