2023-05-19 16:43:00
The light-emitting technology of OLED (organic light-emitting diode) panels can be divided into fluorescent and phosphorescent. Called PHOLED, displays with organic phosphorescent light-emitting diodes are considerably more energy efficient. According to Universal Display Corporation (UDC), the largest manufacturer of materials for OLED screens in the world, responsible for providing hardware for LG Display and Samsung Display, its phosphorescent light emitting diode is capable of converting 100% of electrical energy in light against a conversion of only 25% in displays that use organic fluorescent diodes.
What is PHOLED and what are its advantages in OLED TVs?
PHOLED screen technology brings the same benefits of color fidelity and individual pixel control as OLED panels have. However, its great advantage lies in the energy efficiency of the subpixels used, where instead of using organic fluorescent light emitting diodes, they use diodes with phosphorescent technology. According to the manufacturer UDC, phosphorescent diodes are 75% more efficient than fluorescent ones, being able to convert 100% of electrical energy into light.
The transition to the new technology developed for OLED TVs, PHOLED
According to FlatPanelsHD, organic phosphorescent light-emitting diodes are already partially present in OLED TVs from Samsung and LG. An OLED pixel is made up of three subpixels: red, green and blue (RGB). At the moment, only the red and green pixels already use phosphorescent technology, with only the blue remaining to reach 100% conversion of electrical energy into light.
Universal Display (UDC) Vice President Mike Hack said in an interview with the korean newspaper ETNews on the start of mass production of blue phosphorescent pixels from 2024.
We plan to mass produce them from 2024.
Changing the blue OLED from fluorescence to phosphorescence can increase the luminous efficiency by 4 times.
The UDC (Universal Display Corporation) announced in May 2023 that it is expanding its operations with the opening of a new factory of organic phosphorescent light emitting diodes for OLED screens in Ireland, as per the TomsGuide website reported. That means there’s a chance that next year (2024) could see the launch of OLED TVs containing all three phosphorescent subpixels that make up each OLED pixel.
According to FlatPanelsHD, the UDC appears that Samsung Display and LG Display are currently reviewing phosphorescent blue subpixels to implement in upcoming OLED TV releases. Mike Hack says:
The specific application schedule is to be determined by (client companies) Samsung Display and LG Display.
We plan to provide it to our customers at a reasonable price.
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