LITI Laser-induced thermal imaging process suggest high resolution OLEDs in Q2 2012


Samsung Mobile Display want to use for the organic materials deposition process a new process called LITI Laser-induced thermal imaging process instead of Fine-Metal-Mask (FMM). At the 5.5G A2 P3 line SMD want to use the LITI Laser-induced thermal imaging process which suggest higher resolution AMOLEDs.

3M has partnered with Samsung to jointly develop that kind of process for AMOLEDs.
Laser Induced Thermal Imaging allows for high-resolution patterning of a variety of materials that often cannot be patterned efficiently by other conventional techniques such as photolithography. Application of LITI towards patterning vacuum-coated OLED materials is particularly attractive because of high LITI patterning resolution and accuracy and good compatibility of vacuum-coated OLED materials. LITI may induce thermal transfer defects within OLED materials.
Source:Check out this report:
Display_AMOLED_ReportE_201108_final_1

With LITI process Samsung can achieve AMOLEDs with 300ppi

Fine-Metal-Mask (FMM) is much more expensive than LITI and with FMM the manufactuerer can only produce panels with a 200ppi resolution as it has a printing accuracy of about 15 micro meters. Liti uses lasers with about 2.5 micro meters and the method is cheaper too.

ProductName Size(inch) Resolution Pixel Type ppi With Sub-pixel DisplayType TFTTech
GALAXY S1 4 800 x 480 Pentile 233 155 AMOLED LTPS
GALAXY S2 4.3 800 x 480 RGB 217 217 AMOLED LTPS
GALAXY 4.5 800 x 480 RGB 207 207 AMOLED LTPS
GALAXYNOTE 5.3 1280×800 RGB 285 190 AMOLED LTPS
GALAXYTAB 7 1024×600 RGB 170 170 LCD a-Si
GALAXYTAB7.7 7.7 1280×800 RGB 196 196 AMOLED LTPS
GALAXYTAB8.9 8.9 1280×800 RGB 170 170 LCD a-Si
GALAXYTAB10.1 10.1 1280×800 RGB 150 150 LCD a-Si
iPhone3GS 3.5 480×320 RGB 165 165 LCD a-Si
iPhone4 3.5 960×640 RGB 314 314 LCD LTPS
iPad1 9.7 1024×768 RGB 132 132 LCD a-Si
iPad2 9.7 1024×768 RGB 132 132 LCD a-Si
iPad3 9.7 2048×1536 RGB 264 264 LCD a-Si

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  4. Sharp showcase 13,5 inch OLED with QFHD and flexible 3.4 inch AMOLED at SID-2012
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