Quantum Dot Display Science and Technology

Preface

The idea to start this book project was born out of a pressing need for a comprehensive resource on quantum dots (QDs) for display applications. This need arises from the fact that QD display development efforts are often isolated from each other due to the diverse range of applications and requirements. Unlike the more linear evolution of technologies like Liquid Crystal Displays (LCDs) and Organic Light-Emitting Diodes (OLEDs), QDs have carved a niche as a supporting technology, offering superior color quality at a low cost. This is achieved through the narrow emission spectrum of QDs and the ability to fine-tune colors by altering QD sizes, all while leveraging cost-effective solution processes.

The first quantum dot display products were developed in the search for a technology that could improve the color performance of LCDs to compete against the emerging OLED technology. In 2013, the same year that OLED smartphone displays reached 441 ppi and the first 55” OLED TVs were launched, Sony and QD Vision commercialized the first QD LCD TVs with “Color IQ” technology, marking the beginning of the commercialization of QD displays. That same year, 3M and Nanosys introduced the first Quantum Dot Enhanced Film (QDEF) in Amazon’s Kindle Fire HDX 7-inch model. The QDEF approach, which later became the industry standard, integrates a QD film with a blue light-emitting diode (LED) backlight, achieving vibrant, saturated colors even at high luminance. In 2022, the first two TVs ...