Image source: Sony
It is reported that Sony launched the world's first LCD TV using full array RGB LED backlight as early as 2004. Since then, Sony has continued to improve the accuracy of backlight control and conducted in-depth research into the characteristics of LED components.
Sony's new generation RGB LED backlight technology system uses independently driven RGB LEDs to achieve wide color gamut performance on the display. Independent color luminescence ensures high color purity, allowing the display to cover more than 99% of DCI-P3 color gamut and reaches approximately 90% of the ITU-R BT.20202 standard.
Traditional LED backlight and RGB-LED
In addition, the system has the function of dynamically allocating the optimal power of RGB channels, and can intelligently adjust the light source distribution method according to specific scenes. Unlike traditional high-brightness TVs that only enhance the brightness of bright elements such as stars or the moon in a night scene, Sony's technology allows brightness adjustments to be coordinated with color gradients. At the same time, the system is able to achieve a peak brightness of over 4000 cd/m2.
In addition, the display system uses 96-bit high bit rate signal processing, with high-speed and high-precision signal processing capabilities, can not only present deeper blacks and brighter whites at the same time, but also delicately reproduce light and dark changes in pictures containing a large number of mid-tones, making the light and shadow levels more natural.
Color volume comparison of OLED, LED and RGB-LED
In terms of color control, by independently controlling the brightness of high-density RGB LEDs, the system can achieve vivid and vivid performance in bright areas while avoiding white overflow (White Clipping); in dark areas, it can delicately restore the light and shadow levels and prevent the loss of black details (Black Crushing). In addition, the display system's processing power is approximately twice that of traditional local dimming (Local Dimming) technology, and combined with pixel correction technology, it can accurately present small color differences to ensureColor accuracy to avoid color cast.
Sony said that the company is jointly developing a control processor with its long-term strategic partner MediaTek. As a leading supplier of smart TV SoC (Pentonic series), MediaTek has rich technical experience. In addition, Sony is also cooperating with ROHM to develop LED drivers. IC, and jointly develop LED components with Sanan Optoelectronics. These partners jointly support Sony's development direction in next-generation display technology.
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