Samsung improves the luminous efficiency and usage time of QLED devices

28 November 2019, 04:40:00

Samsung improves the luminous efficiency and usage time of QLED devicesThis morning, Samsung Electronics announced that it has improved the structure of the quantum dot material to achieve a 21.4% increase in luminous efficiency and usage time of self-luminous QLED devices. The latest findings are published in the world-renowned journal Nature. Samsung Electronics Co., Ltd. Chairman Eun-Joo Chang said, "We have shown the possibility of commercializing the next generation display with Samsung's proprietary core material technology."

Won-Ho Won, a researcher at Samsung Advanced Institute of Technology (first author), said, "This study is meaningful in that we understand how the quantum dot material is made and developed a method to make quantum dots with high efficiency regardless of shell thickness. We have shown how to improve the efficiency and lifetime of QLEDs by minimizing energy consumption between quantum dots and by adjusting charge balance."

Samsung has launched its first QLED TV product in 2015 and has already obtained 170 new patents for quantum dot self-luminous QLED material and device structure. In this case, to improve light loss, the surface oxidation of the core, which is the light-emitting part of the quantum dot particles, is suppressed, and the shell around the core is grown uniformly in a symmetrical structure without defects, and at the same time, the energy is increased by increasing the thickness. In addition, shorter ligands on the surface of the shell improve the current injection speed, resulting in higher luminous efficiency and longer lifetime for QLED devices.

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Specifications

Complete specifications of various desktop monitors and smart TVs, grouped according to their brand and year of announcement

AcerAOCAOpenAppleAsusBang & OlufsenBenQContinental EdisonDellDenverEdenwoodEIZOFujitsuGamemaxGigabyteGrundigHaierHannspreeHisenseHitachiHKCHPHuaweiIiyamaInsigniaJVCLeEcoLenovoLGLoeweMedionMetzMonopriceMotorolaMSINECNixeusNokiaOK.OnePlusOzonePanasonicPhilipsPixioQNIXRazerRCASamsungSceptreSharpSkyworthSonyTCLTelefunkenThomsonToshibaVestelVideoSevenViewSonicVizioWasabi MangoXiaomiYashi