T/CI 027-2021 Active Group standards

T/CI 027-2021 Quantum dot diffusion plate for liquid crystal display backlight module

Publish Date: 2021-09-15 Implement Date: 2021-09-15 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/CI 027-2021

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Other

ICS Name: Electronic display devices

Publish Date: 2021-09-15

Implement Date: 2021-09-15

Scope

Scope: This standard specifies the terms and definitions, product structure, technical requirements, quality assessment procedures, inspection and test methods, as well as requirements for marking, packaging, transportation, and storage of quantum dot diffusion plates for liquid crystal display backlight modules. Main technical content: Quantum dot diffusion plates refer to plastic sheets with a matte surface, made from quantum dot solutions or quantum dot powders and thermoplastic substrates, supplemented with functional additives. The sheets are produced by melt extrusion, granulation, and further mixing with substrate particles and diffusion particles, followed by melting and casting or rolling. They are used in the backlight modules of direct-type liquid crystal displays to convert part of the blue light emitted by blue LEDs into red and green light, mix with the remaining blue light to form white output, and correct non-uniform light sources into uniform surface light sources. Requirements 5.1 The appearance of the sheets should be uniform in thickness, with a smooth surface and no obvious defects affecting their use. 5.1.1 Appearance quality under blue light irradiation conditions The appearance quality under blue light irradiation conditions shall comply with Table 1. Table 1 Appearance quality requirements of sheets under blue light irradiation conditions T/CI 027—20216 Serial number Inspection item Requirements Judging criteria 1 Black (bright) spots Defects on the sheet that can be visually distinguished from the surrounding points due to the presence of foreign matter, particle agglomeration, or bubbles. According to detailed specifications or limit sample requirements 2 Black (bright) lines Defects on the sheet that can be visually distinguished from the surrounding lines due to the presence of foreign matter, scratching, or extrusion. 3 Display quality Color spots, color blocks No water ripples, Newton's rin