Ultrashort pulse laser-based AMOLED TV non-thermal repair
technology and repair device
Client / Market
- Companies interested in non-thermal repair machining technology of large size
AMOLED panel
Necessity of this Technology
- Non-thermal repair process is necessary, and a system for large size processing
needs to be established.
- Repair process using nanosecond laser inevitably causes thermal damage to the object.
- In case of processing an organic matter that is very sensitive to the processing
temperature, unnecessary damages are caused from heat around the processing unit.
- When defect or error occurs during large size AMOLED panel manufacturing, the
entire quantity is discarded. From the production yield perspective, this is a serious
downside, therefore a repair technology is needed.
Technical Differentiation
- Ultrashort pulse laser has relatively short pulse width compared to nanosecond
laser and can be used for non-thermal processing to minimize damage from heat
on the object.
- With the ultrashort laser machining system using a gantry, a large size AMOLED
panel can be repaired.
- The beam size can be adjusted with the motorized slit to adjust the beam shape in
the light path of the ultrashort pulse laser-based machining system, and with the
square-shaped beam, machining of area requiring repair can be executed with the
minimum line width of 500 nm.
- Using the gantry established for this system, the defective area of the large size
AMOLED panel is detected and is quickly repaired using the ultrashort pulse laser.
Excellence of Technology
- The process irradiates the femtosecond laser beam to the target layer and
processes the desired area. It is utilized for partial repair of a specific defective area.
- For this, the beam shape and the machining size is adjusted through the slit.
- It is the blueprint that roughly shows the active organic self-illuminator TV’s
femtosecond laser repair system. For large area repair, the gantry system is used
to adjust the laser beam location, not the target for repair, for machining.
- The repair target is fixed with the vacuum chuck of the stage to minimize the
elevation difference error.
- The head researcher for this technology has over 10 years of research experience in
ultrashort femtosecond laser-applied superprecision micro machining field.
Current Intellectual Property Right Status
PATENT
- Non-thermal Repair Method and Device for Full HD High Resolution Mobile Active
Organic Self-illuminator (KR1477005)
- Non-thermal Repair Method and Device for Active Organic Self-illuminator Using
Selective Pulse Width Tunable Laser (KR1450767)
- Thermal and Non-thermal Converged Repair Device for Active Organic Selfilluminator
(KR1387996)
- Non-thermal Repair Method and Device for Transparent Active Organic Selfilluminator
Using Ultrashort Pulse Laser (KR2012-0042367)
- Non-thermal Repair Method and Device for Large Size Active Organic Selfilluminator
Using Ultrashort Pulse Laser (KR2012-0056576)
- Non-thermal Repair Method and Device for Active Organic Self-illuminator Using
Ultrashort Pulse Laser (KR2012-0016303)
- Non-thermal Repair Method and Device for Flexible Active Organic Self-illuminator
Using Ultrashort Pulse Laser (KR2012-0016139)
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