LG OLED TV Panels Certified For Eye Comfort
LG Display (LGD), the world’s primary manufacturer of WOLED panels used in almost all of today’s 4K OLED TVs, has received an “Eye Comfort Display certification” from independent testing specialists TÜV Rheinland, for its large-sized OLED TV panels.
TÜV Rheinland is a German-based, globally recognized independent testing organization. LGD, which produces WOLED (white OLED) display panels for OLED TVs made by LG, Sony, Bang & Olufsen and others, said, TÜV Rheinland certified that it panels meet its eye-comfort standards for three key qualifications.
These include such “common concerns” as: blue light content, flicker, and high-quality imaging.
The inspection service found that “light produced by LG Display’s 65-inch OLED panels consists of 34% blue light, which is lower than the 50% threshold. While the highest spec 65-inch LCD panels produce 64% blue light, LG Display’s OLED panels emit only half that amount,” according to a statement released by LG Display.
Prolonged exposure to blue light at night has been linked to certain deteriorating eye-sight issues including macular degeneration. This is because virtually all visible blue light passes through the eye’s cornea and lens and reaches the retina where light-sensitive cells can be damaged. Studies have shown that exposure to light at night, particularly blue light emitted by electronics devices and certain energy-saving light bulbs, can be harmful. However, exactly how much exposure to TV, PC and mobile device screens and at what intensity level damage occurs is less clear.
One of the advantages of OLED displays and lighting panels is that LG’s WOLED panels emit white light that is then passed through red, green and blue color filters, unlike LED-LCD TVs that typically start with a very bright blue or blue-violet LED backlight that passes through red and green color filters or quantum dots to produce the full color range.
One of the advantages underscored by proponents of WOLED panels is lower blue light emission compared to LED-LCD based TV technologies.
TÜV Rheinland said LG Display’s large-size OLED panels “met every testing criteria including in the high color range and High Dynamic Range categories. The company scored 0.87% in the light reflection category, which is half of that of LCD panels,” according to LG Display.
LG Display said it is encouraging its OLED TV panel customers and distribution companies to use TÜV Rheinland’s certification mark in the sales and promotion of OLED televisions using its panels.
“Certification by TÜV Rheinland means that LG Display’s OLED TV panels are now internationally recognized as displays beneficial for eye health,” stated Dr. Chang-Ho Oh, LG Display TV business unit executive VP/head. He added, “We anticipate that consumers can now choose OLED TVs with more confidence.”
“TÜV Rheinland is an internationally renowned independent testing service provider with many years of experience in the test certification field. We congratulate LG Display on receiving the certification, and we will provide the necessary support for the company to get additional international recognition for the quality of OLED, the next-generation display technology,” said Holger Kunz, Executive Vice President of Products at TÜV Rheinland.
Coming online in the next several years from a number of potential competitors to LG Display will be cheaper OLED TV display panels that use inkjet printing technology to mass produce an alternative form of panel technology to WOLED. The blue-light emission levels from such panels has not been disclosed as yet.
Interestingly, LG Display’s biggest rival, Samsung Display revealed in February that new smaller-sized OLED screens it produces for the Samsung Galaxy S10 smartphone and other mobile displays now produce considerably less blue-light emissions than any other mobile display. Samsung said its blue-light-eradicating advancement was similarly certified by TÜV Rheinland.
In addition, Samsung has said that it is in development of a hybrid QD-OLED (quantum dot)-OLED based TV panel. The company has not said if its blue-light-eradicating advancement used in RGB mobile screens will be applicable to this forthcoming large-format hybrid technology.
The QD-OLED technology is said use blue OLED emitters and inkjet printed red and green quantum-dots to produce full color images.
China-based TCL is also said to be developing a hybrid quantum dot OLED technology called H-QLED that is to use blue OLED emitters combined with red and green quantum dot emitters. The materials will be combined and printed using inkjet technology. Stay tuned for blue-light emission ratings for these newer OLED technologies once they surface in the market.
By Greg Tarr
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