Coating system and coating method

Patent metadata

Field	Value
Publication number	US-10201828-B2
Application number	US-201515127692-A
Country	US
Kind code	B2
Filing date	Oct 29, 2015
Priority date	Jun 1, 2015
Publication date	Feb 12, 2019
Grant date	Feb 12, 2019

Abstract

A coating system and a coating method are provided. The coating system includes: a coating device, a detecting device, and an adjusting device, wherein, the coating device is configured for applying a coating material on a substrate; the detecting device is configured for detecting a film thickness of the coating material at a measuring point when the coating device is applying the coating material and sending the detected film thickness to the adjusting device; the adjusting device is configured for selectively generating a preset feeding speed according to the film thickness and sends the preset feeding speed to the coating device. The coating system and the coating method are capable of adjusting film thickness in real time.

First claim

The invention claimed is:

1. A coating system, comprising: a coating device, a detecting device, and an adjusting device,
wherein the coating device is configured for applying a coating material on a substrate; the detecting device is configured for detecting a film thickness of the coating material at a measuring point when the coating device is applying the coating material and sending the detected film thickness to the adjusting device; and the adjusting device is configured for selectively generating a preset feeding speed according to the film thickness and sends the preset feeding speed to the coating device in a case that the preset feeding speed is generated,
wherein the detecting device includes a light source, a transmitting terminal, a receiving terminal, and a signal processing module; the transmitting terminal and the receiving terminal being located on two sides of the substrate and arranged opposite to each other;
the light source is configured for providing irradiation light for the transmitting terminal,
the transmitting terminal is configured for transmitting an irradiation beam to the substrate so that the irradiation beam passes through the substrate and the coating material,
the receiving terminal is configured for receiving the irradiation light after passing through the substrate and the coating material, and sending the received irradiation light to the signal processing module; and
the signal processing module is configured for generating the film thickness according to the received irradiation light.

2. The coating system according to claim 1 , wherein:
the signal processing module includes a spectrograph and a first computing module;
the spectrograph is configured for converting the received irradiation light into a spectral line; and
the first computing module is configured for generating the film thickness by carrying out a computing process on the spectral line.

3. The coating system according to claim 2 , wherein:
the coating device includes a platform, a pump, and a nozzle; the nozzle being located above the substrate, a hollow structure being arranged in the platform, and the transmitting terminal being located in the hollow structure;
the platform is configured for carrying the substrate;
the pump is configured for driving the nozzle to spray the coating material;
the nozzle is configured for applying the coating material on the substrate.

4. The coating system according to claim 3 , wherein a material of a portion of the platform, located between the transmitting terminal and the substrate, is a transparent material.

5. The coating system according to claim 2 , wherein:
the adjusting device includes: a judging module and a second computing module;
the judging module is configured for judging whether |(T1−T2)/T1| is less than or equal to a preset difference value;
the second computing module is configured for computing the preset feeding speed according to a formula [1+(T1−T2)/T1]V in a case that the judging module judges that |(T1−T2)/T1| is greater than the preset difference value, and sending the preset feeding speed to the coating device so that the coating device drives a nozzle to spray the coating material at the preset feeding speed; and
where T1 is a standard film thickness, T2 is the detected film thickness, and V is an original feeding speed of the coating device when the detecting device is detecting the film thickness of the coating material at the measuring point.

6. The coating system according to claim 1 , wherein:
the coating device includes a platform, a pump, and a nozzle, the nozzle being located above the substrate, a hollow structure being arranged in the platform, and the transmitting terminal being located in the hollow structure;
the platform is configured for carrying the substrate;
the pump is configured for driving the nozzle to spray the coating material; and
the nozzle is configured for applying the coating material on the substrate.

7. The coating system according to claim 6 , wherein, a material of a portion of the platform, located between the transmitting terminal and the substrate, is a transparent material.

8. The coating system according to claim 7 , wherein:
the coating device further includes: a mobile device disposed above the substrate, the receiving terminal and the nozzle being located on the mobile device, and the transmitting terminal and the receiving terminal being located behind the nozzle;
the mobile device is movable above the substrate so that the receiving terminal and the nozzle move synchronously; and
the transmitting terminal is located under the substrate and configured to move synchronously with the receiving terminal and the nozzle.

9. The coating system according to claim 7 , wherein:
the adjusting device includes: a judging module and a second computing module;
the judging module is configured for judging whether |(T1−T2)/T1| is less than or equal to a preset difference value;
the second computing module is configured for computing the preset feeding speed according to a formula [1+(T1−T2)/T1]V in a case that the judging module judges that |(T1−T2)/T1| is greater than the preset difference value, and sending the preset feeding speed to the coating device so that the coating device drives the nozzle to spray the coating material at the preset feeding speed; and
where T1 is a standard film thickness, T2 is the detected film thickness, and V is an original feeding speed of the coating device when the detecting device is detecting the film thickness of the coating material at the measuring point.

10. The coating system according to claim 6 , wherein:
the coating device further includes a mobile device disposed above the substrate, the receiving terminal and the nozzle being located on the mobile device, and the transmitting terminal and the receiving terminal being located behind the nozzle;
the mobile device is movable above the substrate so that the receiving terminal and the nozzle move synchronously; and
the transmitting terminal is located under the substrate and configured to move synchronously with the receiving terminal and the nozzle.

11. The coating system according to claim 10 , wherein:
the adjusting device includes: a judging module and a second computing module;
the judging module is configured for judging whether |(T1−T2)/T1| is less than or equal to a preset difference value;
the second computing module is configured for computing the preset feeding speed according to a formula [1+(T1−T2)/T1]V in a case that the judging module judges that |(T1−T2)/T1| is greater than the preset difference value, and sending the preset feeding speed to the coating device so that the coating device drives the nozzle to spray the coating material at the preset feeding speed; and
where T1 is a standard film thickness, T2 is the detected film thickness, and V is an original feeding speed of the coating device when the detecting device is detecting the film thickness of the coating material at the measuring point.

12. The coating system according to claim 1 , wherein:
the adjusting device includes a judging module and a second computing module;
the judging module is configured for judging whether |(T1−T2)/T1| is less than or equal to a preset difference value;
the second computing module is configured for computing the preset feeding speed according to a formula [1+(T1−T2)/T1]V in a case that the judging module judges that |(T1−T2)/T1| is greater than the preset difference value, and sending the preset feeding speed to the coating device so that the coating device drives a nozzle to spray the coating material at the preset feeding speed; and

Assignees

• Boe Technology Group Co Ltd
• Hefei Boe Optoelectronics Tech

Inventors

• Zhang Xiaomei
• Wang Zhiqiang

Classifications

• B05C11/02 Primary

  Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface {; Controlling means therefor}(B05C7/00 takes precedence; Hand tools for such purposes B05C17/10); Control of the thickness of a coating {by spreading or distributing liquids or other fluent materials already applied to the coated surface}(controlling supply of liquid or other fluent material B05C11/10) · CPC title

• B05C5/02

  {the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g.} from an outlet device in contact or almost in contact, with the work · CPC title

• B05C21/00

  Accessories or implements for use in connection with applying liquids or other fluent materials to surfaces, not provided for in groups B05C1/00 - B05C19/00 (accessories or implements for use in connection with painting or artistic drawing and fully provided for in B44D3/02 - B44D3/38, see subgroups of B44D3/00) · CPC title

• B05C9/00

  Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important · CPC title

• B05C11/1005 Primary

  responsive to condition of liquid or other fluent material already applied to the surface, e.g. coating thickness, weight or pattern · CPC title