Cleaning device for display panel

Patent metadata

Field	Value
Publication number	US-11449040-B2
Application number	US-201716614885-A
Country	US
Kind code	B2
Filing date	Jul 28, 2017
Priority date	May 19, 2017
Publication date	Sep 20, 2022
Grant date	Sep 20, 2022

Abstract

A cleaning device for a display panel is configured with a sensor corresponding to a water jet nozzle, and a control switch which suspends an operation of the device when the water jet nozzle is detected as working abnormally, thereby preventing abnormal products from being produced due to the failure of finding an abnormal condition of the water jet nozzle in time, ensuring the normal process of the product, and preventing the nonessential economic loss.

First claim

What is claimed is:

1. A cleaning device for a display panel, comprising:
a frame comprising a body for mounting the cleaning device and a stand supporting the body;
a water knife component comprising a water jet nozzle, a water supply tank connected to the water jet nozzle through a pipeline, and a regulating device controlling a spray intensity of the water jet nozzle;
a transfer component comprising a transport platform for transporting the display panel to be cleaned by the water jet nozzle;
a discharge component comprising a recycle tank for recycling sewage and a water cover covering two sides of the transport platform to prevent the sewage from splashing;
a detection component comprising a photosensor disposed in correspondence with the water jet nozzle to detect whether the water jet nozzle normally sprays a cleaning solution; and
a control switch electrically connected to the photosensor, wherein the control switch suspends an operation of the cleaning device when the photosensor detects that the water jet nozzle abnormally sprays the cleaning solution.

2. The cleaning device according to claim 1 , wherein the photosensor is disposed below the water jet nozzle.

3. The cleaning device according to claim 1 , wherein the transport platform comprises roller stands and conveying rollers, the roller stands are arranged in parallel along a conveying direction, and the conveying rollers are parallelly interposed between the roller stands, one side of each of the roller stands is near the water jet nozzle.

4. The cleaning device according to claim 3 , wherein the one side of each of the roller stands near the water jet nozzle is tilted up by a predetermined angle, so that the conveyed display panel meets the water jet nozzle at the predetermined angle in an upwardly tilted manner.

5. The cleaning device according to claim 3 , wherein each of the conveying rollers comprises two sub-rollers, the two sub-rollers are fixed in a V shape, and an included angle of the V shape is directed to the conveying direction of the display panel.

6. The cleaning device according to claim 3 , wherein surfaces of the conveying rollers are provided with anti-slip sleeves.

7. The cleaning device according to claim 1 , wherein the water knife component further comprises:
a vibrator driving the water jet nozzle to vibrate back and forth horizontally in a direction perpendicular to a direction transporting the display panel.

8. The cleaning device according to claim 1 , wherein a jetting direction of the water jet nozzle is tilted at a predetermined angle toward a direction in which the display panel is conveyed.

9. The cleaning device according to claim 1 , wherein the pipeline between the water jet nozzle and the water supply tank comprises a detachable filter tube, and a filter is disposed inside the filter tube.

10. The cleaning device according to claim 1 , further comprising:
a sewage loop component comprising a sewage purification tank connected to the recycle tank, and the sewage in the sewage purification tank is purified and then pumped, by a motor, to the water supply tank and is recycled.

11. The cleaning device according to claim 1 , wherein the water cover is made of a transparent material.

12. A cleaning device for a display panel, comprising:
a frame comprising a body for mounting the cleaning device and a stand supporting the body;
a water knife component comprising a water jet nozzle, a water supply tank connected to the water jet nozzle through a pipeline, and a regulating device controlling a spray intensity of the water jet nozzle;
a transfer component comprising a transport platform for transporting the display panel to be cleaned by the water jet nozzle;
a discharge component comprising a recycle tank for recycling sewage, and a water cover covering two sides of the transport platform to prevent the sewage from splashing, wherein a surface of the water cover is provided with an operation window that may be pushed and pulled;
a detection component comprising a photosensor disposed in correspondence with the water jet nozzle to detect whether the water jet nozzle normally sprays a cleaning solution; and
a control switch electrically connected to the photosensor, wherein the control switch suspends an operation of the cleaning device when the photosensor detects that the water jet nozzle abnormally sprays the cleaning solution;
wherein the transport platform comprises roller stands and conveying rollers, the roller stands are arranged in parallel along a conveying direction, the conveying rollers are parallelly interposed between the roller stands, each of the conveying rollers comprises two sub-rollers, the two sub-rollers are fixed in a V shape, and an included angle of the V shape is directed to a conveying direction of the display panel, one side of each of the roller stands is near the water jet nozzle.

13. The cleaning device according to claim 12 , wherein the photosensor is disposed below the water jet nozzle.

14. The cleaning device according to claim 12 , wherein the one side of each of the roller stands near the water jet nozzle is tilted up by a predetermined angle, so that the conveyed display panel meets the water jet nozzle at the predetermined angle in an upwardly tilted manner.

15. The cleaning device according to claim 12 , wherein surfaces of the conveying rollers are provided with anti-slip sleeves.

16. The cleaning device according to claim 12 , wherein a jetting direction of the water jet nozzle is tilted at a predetermined angle toward a direction in which the display panel is conveyed.

17. The cleaning device according to claim 12 , wherein the pipeline between the water jet nozzle and the water supply tank comprises a detachable filter tube, and a filter is disposed inside the filter tube.

18. The cleaning device according to claim 12 , further comprising:
a sewage loop component comprising a sewage purification tank connected to the recycle tank, and the sewage in the sewage purification tank is purified and then pumped, by a motor, to the water supply tank and is recycled.

19. The cleaning device according to claim 12 , wherein the water knife component further comprises:
a vibrator driving the water jet nozzle to vibrate back and forth horizontally in a direction perpendicular to the conveying direction.

20. The cleaning device according to claim 12 , wherein the water cover is made of a transparent material.

Assignees

• Hkc Corp Ltd
• Chongqing Hkc Optoelectronics Tech Co Ltd

Inventors

• Chien Chung-Kuang

Classifications

• H10P72/3314

  Continuous loading and unloading into and out of a processing chamber, e.g. transporting belts within processing chambers · CPC title

• H10P72/3211

  Changing orientation of the substrate, e.g. from a horizontal position to a vertical position · CPC title

• H10P72/0616 Primary

  Monitoring of warpages, curvatures, damages, defects or the like · CPC title

• H10P72/0604

  Process monitoring, e.g. flow or thickness monitoring · CPC title

• H10P72/0414

  using mainly spraying means, e.g. nozzles · CPC title