In the past two years, we feel that HDR technology has been added to high-end TVs and monitors, and even industry chip, display panel, monitor, PC, and system manufacturers have participated in the formulation of relevant HDR standards. What are the advantages of this frequently exposed technology?
Why are more and more display devices adding HDR technology?
HDR technology is the abbreviation of high dynamic lighting rendering, also called high dynamic range. Compared with ordinary image processing, HDR can provide more dynamic performance and image details. Images can better reflect the visual effects of objects in the real environment.
HDR technology can adjust the brightness range and improve the contrast of the brightest and darkest pictures, so as to obtain a wider color range, in addition to significantly improving the grayscale, it also brings a blacker or whiter color effect.
It can be said that monitors equipped with HDR technology can be comprehensively improved in terms of RGB, brightness, and color performance, and their impact on image quality is very obvious.
All in all, the image quality improvement of HDR technology is intuitive. In recent years, many display manufacturers have equipped their products with HDR technology, which can bring high contrast and excellent color performance.
In addition, if HDR is installed on OLED products, more amazing display effects may be born. OLED abandons the backlight and can realize the self-illumination of each pixel, and the high dynamics of HDR can be fully displayed on OLED TVs.
DisplayHDR 1.0 standard
In terms of technical standards, there are open HDR-10 and patented Dolby Vision in the TV field. VESA (Video Electronics Standards Association) has now launched the first new HDR technical standard for PC monitors - DisplayHDR 1.0.
The DisplayHDR 1.0 standard is aimed at LCD liquid crystal displays, which occupy more than 99% of the products on the market, and defines three different levels. The requirements for specifications such as display brightness, color gamut, and color depth are different, but all must have true 8-bit color display. Panel (about 15% market share):
DisplayHDR 400 is the lowest-end, requiring support for global dimming, peak brightness not lower than 400nit, global continuous brightness not lower than 320nit, ITU-R BT. The 709 color gamut (basically similar to the sRGB color gamut) covers no less than 95% and supports HDR-10.
DisplayHDR 600 is aimed at high-end monitors and notebooks, requiring a screen with 10-bit processing capability, a peak brightness of 600nit, a continuous brightness of 350nit, a black and white brightness response time of no more than 8 frames, and a color gamut covering 99% ITU-R BT. 709, 90% DCI-P3 65.
DisplayHDR 1000 is only capable of professional monitors, with a peak brightness of 1000nit, a continuous brightness of 600nit, and a significant increase in color gamma.
Therefore, at present, you can also judge the professional level of the display by the HDR standard supported by the display.
