Anti-static method, anti-static device and flat display manufacturing equipment

Patent metadata

Field	Value
Publication number	US-2016374186-A1
Application number	US-201514897920-A
Country	US
Kind code	A1
Filing date	Jul 21, 2015
Priority date	Jan 5, 2015
Publication date	Dec 22, 2016
Grant date	—

Abstract

An anti-static method, an anti-static device and flat display manufacture equipment are disclosed. The anti-static device includes an adjustable gas supply system, configured for supplying gas; a plurality of outlets, wherein gas supplied by the gas adjustable system blows a substrate, and discharge needles disposed in the gas outlets and configured for ionizing air near pinpoints of the discharge needles or the gas passing by the pinpoints of the discharge needles, making gas blown out of the gas outlets contain ions. The anti-static device can solve a problem that a display panel is damaged by static charges due to accumulation and hence discharging of static charges in a flat display field.

First claim

1 . An anti-static device, applied in a display manufacture field, comprising:
an adjustable gas supply system configured for supplying gas; a plurality of gas outlets, wherein gas supplied by the gas adjustable system blows a bottom surface of a substrate, and the bottom surface of the substrate is a surface contacting with a display manufacture equipment; and discharge needles, disposed in the gas outlets and configured for ionizing air near pinpoints of the discharge needles and/or a portion of the gas passing by the pinpoints of the discharge needles by electrically discharging, making gas blown out of the gas outlets comprise ions.

2 . The anti-static device according to claim 1 , wherein the gas supplied by the adjustable gas supply system is compressed gas.

3 . The anti-static device according to claim 1 , wherein the gas outlets are disposed on a surface of the display manufacture equipment contacting with the substrate.

4 . The anti-static device according to claim 1 , further comprising:
a control module, which is configured to adjust concentration of ions that reach the surface of the substrate by controlling a discharge voltage of the discharge needles, a gas flux of the outlets of the adjustable gas supply system, and/or a distance from the outlets to the surface of the substrate.

5 . The anti-static device according to claim 4 , further comprising:
a movable device and a drive control portion that drives and controls movement of the movable device; wherein the plurality of the gas outlets are disposed on the movable device and the drive control portion is connected with the control module.

6 . The anti-static device according to claim 4 , wherein the adjustable gas supply system comprises a flow control module configured for controlling the gas flux, and the flow control module is connected with the control module.

7 . The anti-static device according to claim 4 , further comprising: a voltage supply circuit of the discharge needles, wherein the voltage supply circuit comprises a voltage regulation module, and the voltage regulation module is connected with the control module.

8 . The anti-static device according to claim 4 , wherein a gas injector is disposed inside the gas outlets or the gas injector directly forms the gas outlets; the gas injector comprises a filter, a gas channel and a sprayer nozzle; a gas inlet end of the gas injector is connected with the gas outlets of the adjustable gas supply system and the gas supplied by the adjustable gas supply system enters via the gas inlet end and then is sprayed out from the sprayer nozzle after passing the filter and the gas channel.

9 . The anti-static device according to claim 8 , wherein a gas flow passage of the gas injector is further provided with:
a pressure control device, which is configured for measuring and adjusting pressure of gas sprayed out of the sprayer nozzle and connected with the control module.

10 . The anti-static device according to claim 4 , wherein a gas flow passage from the adjustable gas supply system to the gas outlets is further disposed with: a uniform pressure cabin formed by a closed space;
a gas outlet port of the uniform pressure cabin is connected to the plurality of gas outlets or the gas outlet port directly forms the gas outlets; a gas inlet port of the uniform pressure cabin is connected with the gas outlets of the adjustable gas supply system via pipes.

11 . The anti-static device according to claim 10 , wherein the gas inlet port of the uniform pressure cabin is a pipe that gradually becomes thick.

12 . The anti-static device according to claim 10 , wherein a gas flow passage between the adjustable gas supply system and the gas outlets is disposed with a solenoid valve that connects with the control module.

13 . The anti-static device according to in claim 4 , wherein a gas flow passage between the adjustable gas supply system and the gas outlets is disposed with a solenoid valve that connects with the control module.

14 . The anti-static device according to claim 1 , wherein a gas flow passage between the adjustable gas supply system and the gas outlets is disposed with:
a gas shunt device, wherein a gas inlet end of the gas shunt device is connected with the gas supply pipe and the gas shunt device comprises a plurality of gas outlet ports; the plurality of the gas outlet ports are respectively connected to the plurality of the gas outlets or directly form the plurality of the gas outlets.

15 . (canceled)

16 . A flat display manufacture equipment, comprising the anti-static device according to claim 1 .

17 . The flat display manufacture equipment according to claim 16 , further comprising: a distance sensor configured for sensing a distance between the substrate and the flat display manufacture equipment.

18 . The flat display manufacture equipment according to claim 16 , wherein the flat display manufacture equipment is static spinning equipment, heat-curing equipment, inspection equipment which requires applying of pressure, or alignment/rotation machine.

19 . The flat display manufacture equipment according to claim 18 , wherein the flat display manufacture equipment is the alignment/rotation machine, the alignment/rotation machine includes a main structure in which a cavity is disposed, and the adjustable gas supply system of the anti-static device is disposed in the cavity;
the main structure is further provided with a surface that contacts with the substrate, a motion guide slot is provided on the surface, and the movable device of the anti-static device moves along the motion guidance slot.

20 . The flat display manufacture equipment according to claim 19 , wherein a drive control portion of the anti-static device comprises a driving wheel and a toothed belt; a center shaft of the movable device is fixed on the toothed belt, and the toothed belt is engaged with the driving wheel, whereby the movable device moves along the motion guide slot upon the driving wheel driving the toothed belt.

21 . An anti-static method, comprising:
employing an adjustable gas supply system to supply gas; providing a plurality of gas outlets, wherein gas supplied by the adjustable gas supply system blows a bottom surface of a substrate, and the bottom surface of the substrate is a surface contacting with a flat display manufacture equipment; and ionizing air near pinpoints of discharge needles and/or a portion of the gas passing by the pinpoints of the discharge needles by allowing the discharge needles disposed in the gas outlets to electrically discharge, making the gas blown from the gas outlets comprise ions.

Assignees

• Hefei Boe Optoelectronics Tech
• Boe Technology Group Co Ltd

Inventors

• Jing Yangkun

Classifications

• G02F1/1303 Primary

  Apparatus specially adapted to the manufacture of LCDs · CPC title

• H05F3/04 Primary

  by means of spark gaps or other discharge devices (devices providing for corona discharge per se H01T19/00) · CPC title

• G02F1/13

  based on liquid crystals, e.g. single liquid crystal display cells · CPC title