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Dolby unveils 46 “prototype HDR display with 1,838 LEDs in the backlight system: brightness – over 4000 cd / sq.cm
Dolby Laboratories and SIM2 Multimedia Demonstrate Prototype New High Dynamic Range (HDR) LCD Using Dolby’s Locally Variable LED Backlighting System.
Dolby’s HDR technologies leverage the power of the LED backlighting system to deliver incredible contrast and brightness. This is said to achieve “real-world” image quality in terms of visual perception of depth, detail and color.
The backlight system and the backlight cooling system were designed by SIM2. In addition, SIM2 will carry out a reference design for serial production.
Features of the prototype:
- Screen size – 46 inches (117 cm) diagonal;
- Screen resolution – 1920 ? 1080 pixels;
- The aspect ratio of the screen is 16: 9;
- The number of LEDs in the backlighting system is 1838;
- Brightness – over 4000 cd / sq.cm
- Luminescence uniformity – more than 95% over the entire area.
As for contrast, the company points out without false modesty that it is equal to infinity. The meaning of this statement becomes clear if we remember that contrast is the ratio of maximum brightness to minimum, and the minimum brightness of the LEDs is zero. In the interval between the minimum and maximum values of the brightness of the LEDs installed in the prototype backlighting system, set by a 16-bit number. The prototype control circuit is based on Xilinx Virtex programmable gate arrays.
Interestingly, the well-known designer Giorgio Revoldini worked on the design of the prototype body, who has already designed SIM2 Multimedia products more than once – for example, the Grand Cinema HT3000 DLP projector.
Source: Dolby Laboratories