The reputation of LG’s OLED technology may have taken a hit during SID Display Week, a prestigious industry tradeshow in which vendors flaunt their latest and greatest display products. According to industry associates, one of the company’s panels had signs of screen burn-in on the first day of the show. The owners claim that the display was only used for 50 to 60 hours prior to the event. Burn-in refers to permanent image retention, usually caused by leaving a static image on the screen for a long period of time. TV reviews site RTings.com has been conducting a burn-in test on six 2017 OLED TVs since January this year. Uniformity issues were clearly visible after the four-week stage. LG engineers visited the site's lab and confirmed the issues were a result of a factory problem and that some panels were more prone than others.