LG Chem and Other OLED Light Panel Makers at the OLED Summit
October 30, 2012

LG Chem and Other OLED Light Panel Makers at the OLED Summit


The 2012 World OLED Summit was held in September 26~28th in San Francisco and 200 attendees learned the most recent developments on OLEDs technology in displays and lighting.  For the OLED lighting sessions, the leading OLED lighting producers-Fraunhofer, First O-Lite, Konica Minolta, LG Chem, OSRAM, Panasonic, and Philips-shared company’s updates on R&D and their commercialization efforts.  The key issue was how to accelerate and differentiate the OLED lighting vs. LEDs in the lighting market by increasing the lumens per watt, while concurrently reducing a cost per kilo-lumen.  Some of the OLED lighting producers have already commercialized OLED lighting and are characterized in Table 1.

Table 1: Currently Available OLED Lighting Product

Source: Companies, OLED-A



During the conference, LG Chem, Panasonic and Philips revealed their plans for maximum panel sizes and efficacy level as shown in Table 2.    


Table 2:                  OLED Lighting Target Key Specification by 2015

Source: Companies, OLED-A


Joon Park, Vice President of OLED Sales & Marketing for LG Chem gave a talk on the company’s investment plan and product roadmaps. LG Chem has been operating an in-line Gen 2 Fab (370 x 470 mm) with 7K substrates/month in Ochang, Korea; however, the company plans to build a Gen 5 line, with mass production set for in 2014.  LG Chem originally planned to build a Gen-4 line (1100 x 1250 mm), however, with the availability of tools for Gen 5, the company decided to go with the larger Fab in order to take a leadership position in both volume and cost (figure 1). 


Figure 1: LG Chem Cost Target

Source: LG Chem


The pilot line G2- Ochang fab- will produce 100 x 100 mm2 lighting panels with 1.8 mm thickness, weighing under 40g.  The company explained that its light panel has an efficacy of 45lm/W with ~10K hour’s lifetime (L70) at 3,000 cd/m2.  The company’s goal is to produce OLED light panels with greater than 60lm/W, greater than 3,000 cd/m2, at less than USD50/Klm.  Therefore, the company is accelerating plans for light panels by increasing efficacy from 45 lm/W to 60 lm/W and then 80 lm/W, using improved material efficiency and a Stacked Structure as shown in Figure 2. 


Figure 2 : Stacked Structure

Source: LG Chem


The target date for delivering 80 lm/W is Q2’2013 on a 150 x 150 mm2 panel and by 2015 develop a light panel size of 300 x 300 mm2.  LG Chem expects to see more development on panel sizes up to 300 x 300 mm2 with more than 135lm/W efficacy with 3000 cd/m2 luminance and prices down to USD50/Klm by 2015. (Table 3)  LG Chem plans its cost reduction through reducing photo-masks and organic materials costs by increasing glass substrate size from G2 to G5 and improving evaporation efficiency and material utilization, while implementing the Frit System, which uses non-cavity glass. 


The company targets the light panel dimensions at 1.4 mm thickness by using 0.7 mm thickness coverglass and substrate glass, while using a thickness of a 0.2 mm out-coupling film (Figure 2).  Table 3 shows the company’s plans for transparent light panels in 2013 and flexible panels in 2015. 


Figure 2. Side View of LG4S1-R Panel (Thin Film 0.2mm thin)

Source: LG Chem


Table 3: LG Chem Targeted Specification and Substrate Size

Source: LG Chem, OLED-A




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