Samsung has presented the first SUHD TV with the best picture quality ever produced for an LCD-based television. Next level of the picture quality is achieved thanks to quantum dot nano crystal semiconductor technology which allows to create displays with more colors than standard LCD displays.
So what is the difference between a usual LCD TV and SUHD TV? And how does quantum dot nano crystal technology work?
In a usual LCD TV the color picture is created with a mix from thousands of red, green, and blue (RGB) pixels. To produce these colors white light is used.
White light is generated by blue LEDs coated in yellow phosphorus (white light may be produced by combining the wavelength of yellow and blue light only, this effect was discovered by Sir Isaac Newton in early 1700s). Next, the white light is passed through a specific filter to take out any unwanted colors. After that only pure red, green, and blue colors reach the surface of TV screen. But at the stage where the unwanted colors are filtered out, the overall brightness of the TV picture is reduced.
Contrary to described method, Samsung engineers use special nano crystals in their SUHD TV to create pure red, green, and blue colors for pixels without having to filter out other colors. The new technology (actually, quantum dots were invented about 30 years ago, but only now have come to TV sets) uses quantum dots to emit light. Quantum dot nano crystals are small particles of about 2 to 10 nanometers in diameter. The color of emitted light depends on dot’s size; smaller dots appear blue, larger ones more red. It means that light doesn’t have to pass through filters and lose brightness.
As a result of implementing the new technology, the TV picture becomes brighter, colors have better accuracy and higher saturation. Samsung says its SUHD sets achieve up to 2.5 times the light output of standard LED LCDs.
Samsung presented its 88-inch JS9500SUHD TV based on the new technology at CES 2015.
Wonjin Lee, the Executive Vice President of Samsung Electronics, has also presented new Smart TV system called Tizen, which will power all Samsung TVs in future. Tizen powers TVs with fast and intuitive interface, it also enables the user to sync external devices like tablets, phones and smart watches to the screen via Bluetooth.