Product Description

This scheme is laser patching system designed for TFT-LCD panel. The device is equipped with Weicai self-developed control system (including Laser head and Laser Controller), advanced beam transmission system,achieve fine and tiny spots,to ensure accurate cutting at the micro level,provide accurate power control wavelengths;using Japan's original MITUTOYO precision optical image system,equipped with laser processing dedicated optical lens,image observation objective lens,servo drive electronic control system,customize suspension pneumatic shock system,precision steel frame base and other components constitute.The system includes Nd-YAG, laser head of pulsed solid state laser ,consisting of water-cooled power supply and control electronics main unit. The laser mainly produces 1064nm near-infrared light.However, it have mechanism for tuning the KTP crystal and the filter wheel through angle to generate and select additional harmonics of 532 nm (green) and 355 nm (UV).This device can against short-circuit line cutting processing on a specific material layer of  workpiece, the workpieces are taken by manual mode.

Product application
Mainly used to cut and trim micron-sized parts of silicon-based semiconductor circuits,in particular, passivation layers (silicon oxide/nitride) and metal interconnects (usually aluminum).Can against the target material adjust laser pulse energy and wavelength.

Equipment use
Precision cutting of semiconductor circuits, is to repair semiconductor failures ,analysis and in optical micromachining applications excellent tools for increasing productivity .Can significantly increase the of IC design engineers and fault analysis personnel productivity ,provides valuable tools for rapid removal of passivated materials and cutting circuits .The system can greatly improve the quality of production by quickly repairing defects and re-moving short circuits.On LCD screen repair industry accounted for the high-end repair technology,  the most high-end technology of LCD screen repair ,LCD screen repair industry in addition to the COF loose welding ect.(This error can be repaired with a bonding machine) others such as ITO break, short line, bright line, half-line, dotted line ,a multi-line laser machine can be used to repair. Laser machine with high efficiency, fixed rate, low cost (the same fault in the laser machine does not need replacement parts, (and do not affect the repair rate), in large-scale production factory & after sale and service company are widely used ,as the main equipment for repairing screen .


Equipment function
The device is using laser (good monochromatic, good coherence, good direction)
&(high brightness) characteristics, under various kinds of optics effect, focused into high-energy laser,use different wavelengths(1064nm,532nm) repairing Short Circuit Defects in TFT-LCD/OLED Processes,to improve the yield rate.

Field of application
Suitable for LCD panel manufacturers, Panel bonding foundry, Well-known brand manufacturers after sales, Professional LCD repair market, Professional maintenance companies and home appliance repair users.

Equipment major development projects

Overall device description

Device parameters
Dimensions: 2003mm × 1650mm × 1860mm(According to the actual design)
Equipment weight: 515KG
Laser system : RUICONG(WEICAI)
Laser Type : Semiconductor laser ND-YAG
Cooling method: water-cooled
Laser power : 0.5-2mJ/Pulse
Frequency of vibration : 1 ~ 5 Hz/ second
Peak power : 1MW
Processing method: Dotting, marking
Optional wavelength : 1064nm/532 nm
The estimated maximum output power for each laser pulse is:
532nm/2mJ/5ns
Note : These are the worst case energy for safe calculations. Actual energy level is adjustable, usually less than half of it.

General project
 Applicable LCD panel size up to 65 inches
 Dot (3um X 3um) , Line(L50um X 3um) , Block(50um X 50um)
 Electronic light gate red light
 Working power 220V , 30A
 No fuse protection circuit breaker protection
 Working temperature 20 ºC ~  30 ºC+ / - 5 ºC
 Working environment relative humidity 65 ± 5 % RH

Optical imaging system
The laser head is encapsulated in a protective housing ,to prevent beyond Class 1 limits radiation,in addition to the output beam. Microscope as beam delivery system(through the objective lens to surface of semiconductor chip), align the target and check it before and after laser application. Using several Mitutoyo M Plan Apo and NIR long working distance objective lens, for laser cutting applications.
Objective lens : Observation/laser processing dedicated type
Objective lens switching system : 4-hole/ Electric switchable type (linear)
Precision objective lens group: 5X ,10X ,20X
M Plan APO 5X Observation (standard)
M Plan APO 10X Laser processing (standard)
M Plan NIR 20X Laser processing (standard)
Processing platform and driving system
Working platform size : 1260 mm X 1200 mm
Platform material: Precision lapping optical glass platform
Platform base: Precision sheet metal base
XY axis effective stroke:1260 mm X 1000mm
XY axis driver form: Servo motor system with confidential screw
XY axis minimum resolution: 1um/pulse 
Reproducibility is less than or equal to 5 um
Z axis maximum stroke : 100mm
Z axis driver form: Servo motor system with confidential screw
Z axis minimum resolution: 0.1um/pulse
Based on the actual design configuration

Auto focus system
Focus type: manual focus
Shock absorber system
Form of shock absorber : Design suspended pneumatic shock absorber,can guarantee and greatly reduce the vibration from ground conduction .
Natural frequency (vertical/horizontal): 2~2.3 Hz
(Equipment demand floor shock proof rating: B level)

Operating mode
Software function
(1) Laser macro mode operation function
Provides Point / Line two laser processing modes, one-time quick fix after teaching.
Laser manual operation firing function
(3) Up and down light source manual adjustment
(4) Imaging parameter setting function
a. Brightness setting
b. Contrast setting
c. Saturation setting
(5)Operating language selection
a. Chinese
b. English
Common equipment
PAower supply 3 phase /AC 220 V ± 10%, 30A
Power connector M6 terminal
Ground wire JIS grade 1, above 8mmsq
Use environment
Temperature 20-26 C
Humidity 30-70% (No dew drop is allowed)
Clean level Class 10,000

Warranty Period
12 months warranty service after acceptance (excluding consumption of spare parts)
The following circumstances will not be covered by our warranty :
Improper use (including unauthorized removal or modification of the product)
Transfer after shipment (Our company will have people to follow up and have obligation to inform) ,drop or damage during transferring .
Caused by the objective environment, such as natural disasters, fires, etc.
Consumables (fuses, etc.)

Training places
One device can provide 4 technicians to participate in training learning for free. combining theory with practice, let on-site technician quickly master basic operating rules of the machine, LCD panel troubleshooting methods and basic maintenance skills.

Training time
Valid within one year
Note: Different models equipments will have relative changes in the control system and laser system parameters ,the specific scheme can be noted in customization process.