2019 Mini LED backlight products are expected to be mass-produced

- Nov 15, 2018-

According to Trendsce Photovoltaic Research (WitsView) "New Display Technology Cost Analysis Report", after nearly a year of brewing, the Mini LED display technology has matured, and the precision and speed (UPH) of the Mini LED (Die Bond) has Significant improvement, 2019 has a good chance to see the end products with Mini LED backlight. As the number of Mini LEDs is different, the production cost of the overall display will increase by 1.2 to 2 times.

LED light angle and machine thickness affect the number of Mini LEDs used

Li Zhihao, vice researcher of WitsView, pointed out that the number of Mini LEDs used is related to the thickness of the whole machine and the brightness required for the backlight. Since electronic products have recently been demanding towards thin and light design, the remaining light mixing area in the backlight decreases with the thickness of the whole machine. It is necessary to shorten, but in order to maintain good optical performance, the number of Mini LEDs used is also high. If you want to maintain a thin design, but at the same time reduce the number of LEDs used, turning on the LED light angle is another option. The exit angle of the current Mini LED is between 120 and 140 degrees, and the epitaxial plant is committed to increasing the light extraction angle to 140 to 160 degrees. By reducing the number of Mini LEDs used, the production cost is further reduced.

The main competitor of Mini LED backlight is still OLED

WitsView analysis, Mini LED backlight is actually not out of the traditional LCD architecture, mainly by increasing the number of LEDs used to increase the brightness, and close to the level of OLED in comparison, the most important is to enhance dynamic contrast (HDR) Presentation. Taking a 65-inch UHD 4K TV panel as an example, if a traditional high-order direct-lit backlight is used with a quantum dot film (QDEF), the cost of the panel module is about $600. The Mini LED backlight and the LED use of 16,000 are used. The module price is at $700. If the sprint specification is used to pull 40,000 units, the cost may increase to $1,200, which is 20% more expensive than OLED TVs of the same size and resolution. Therefore, if Mini LEDs compete with OLEDs for high-end TV market, there is still room for cost, how to balance the specifications and costs, or whether the technology can ultimately be accepted by the market.