Perovskite quantum dots film exhibits low cost, low heavy metal content, high brightness and narrow emission peak. Here, we introduced features of Perovskite quantum dots film and its beneficial effects in LCD TVs applications. Afterwards, we thoroughly compared the Perovskite quantum dots film and CdSe based quantum dots enhancement film.
This paper reports an ultra-large laminated quantum dot diffuser plate (QD-DP) prepared by a multi-layer co-extrusion method for television (TV) backlights. The QD-DP has a sandwich-like structure that contains a middle QD functional layer for color conversion and top/bottom polymer layers for both encapsulation and protection. Reliability tests show that the QD-DP exhibits outstanding long-term stability under harsh conditions with continuous blue light excitation, high temperature, and high humidity. A 75-inch TV prototype is assembled by employing an ultra-large QD-DP based backlight module, which can achieve the color gamut of 118.3% NTSC1931, the brightness of 372 nits, and the uniformity of 84%. Compared with conventional QD-film based TV, the proposed TV prototype provides comparable performance with a simpler structure and lower cost. As a promising QD backlight device, this new QD device has a bright application prospect in large-sized displays.
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