T/SZSA 029.4-2025 Active Group standards

T/SZSA 029.4-2025 Health Display Technology Specification Part 4: Requirements and Measurement Methods for Electronic Display Screens

Publish Date: 2025-05-09 Implement Date: 2025-05-09 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/SZSA 029.4-2025

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Other

ICS Name: Electronic display devices

Publish Date: 2025-05-09

Implement Date: 2025-05-09

Scope

Scope: This standard specifies the requirements and measurement methods for color temperature, harmful blue light energy ratio in the spectrum, and brightness under different environmental lighting conditions of electronic display screens in health display technology specifications. This standard applies to products with electronic display screens such as mobile phones, tablet computers, laptops, desktop computers, televisions, learning machines, and electronic watches; in addition, the appropriate screen brightness range under environmental lighting conditions (0 lx to 10,000 lx) can also be used as a reference for outdoor large screens. Main technical content: The imaging principle of electronic display products can be mainly divided into two categories. One category, such as LCD screens, uses white backlight sources and controls the proportion and intensity of RGB three-color light in pixels through diffusion plates, polarizing plates, and liquid crystal deflection to achieve color and image display. The other category, such as OLED screens, does not need backlight sources and directly displays images by controlling the emission intensity of organic semiconductor chips in each pixel of RGB three colors. Both types of image display rely on organic or inorganic blue LEDs. Studies have shown that prolonged exposure to displays such as mobile phones, desktops, tablets, children's learning machines, and televisions can cause visual fatigue and myopia [1], while harmful blue light radiation (referring to the 415-455 nm band) is the main trigger for cataracts and macular degeneration of the retina, especially for minors who are in the growth and development stage, as their eyes are more sensitive to short-wave blue light [2] and are more prone to vision disorders and other eye diseases. According to the 2018 statistics from the National Health Commission [3], the myopia rate among minors has reached 53.6% and is showing an increasing and younger trend [4]. The preve