To achieve quantum TV with a true technical definition, there are still technical obstacles and material recycling issues.
According to the latest report from WitsView, the optical industry research department of market research firm TrendForce, Samsung Electronics introduced its high-end TV products from "SUHD" to "QLED" at the CES show in January this year, sparking market attention to quantum TV. Development, its QLED is still the initial results of technology, to achieve the true technical definition of quantum TV, it will still face technical obstacles and material recycling issues, it is estimated that the true self-illuminating quantum TV will have a chance to come out after 2020.
WitsView said that in terms of display technology, both quantum TV and OLED TV do not need backlight. The difference is that quantum TV replaces the organic materials used in current OLEDs with quantum dots, and self-lumineses through the energy generated by quantum effects. Quantum dots with different particle sizes emit different wavelengths of light, and can exhibit different colors even without using color filters.
In terms of development time, quantum TV first integrates quantum dots with backlight modules. Whether it is packaged in LEDs or placed in quantum film of backlights, it has been relatively mature and has a high volume production performance, but further In order to combine the quantum dots with the display and replace the color filter with the quantum dots, the panel manufacturers and component manufacturers are still in the research stage, and the self-luminous quantum dots that do not use the backlight module at all are There are many issues that need to be overcome.
WitsView pointed out that the biggest advantage of QLED will be that color saturation has a better chance than OLED, and there is no problem of insufficient lifetime of blue phosphorescent materials faced by OLED. However, in order to present high color saturation, most of the quantum dots are added with heavy metal cadmium, and the doping dose does not conform to the European Union's Restriction of Hazardous Substances (RoHS), so there is a concern about environmental pollution. At present, Nanoco has developed a quantum dot technology that does not contain cadmium (Cd-free), but it has not broken through in terms of luminous efficiency. At this stage, the luminous efficiency and lifetime of self-luminescence through quantum dots alone are all off the road to commercialization. There is still a distance. WitsView predicts that to see the true quantum dot display technology shine on the product, it will still have to wait until 2020.
WitsView said that at the current stage of Samsung's QLED, it is still in the backlight of the display module to put a film filled with quantum dots (QDEF), through the backlight to achieve high color saturation effect, the practice There is not much difference between the design of the display module and the general LCD TV. For example, AUO, BOE and Sharp have similar designs on the high-end TV panels. Therefore, Samsung’s strategy seems to belong to a marketing campaign. I hope to enhance Samsung's brand recognition in Quantum TV and make a difference with LG's OLED TV. In addition, this strategy also proves that Samsung will slow down the development of large-size OLED panels in the future, focusing on OLED resources on smart phone panels.
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