Progress in Color Conversion Technology for Micro‐LED

Abstract

LCD (TFT-LCD) improved this problem. [3] As a display technology that is lightweight and not inferior to CRT, it quickly replaced CRT and became one of the most mainstream displays on the market at that time. The characteristics of LCD still have the disadvantage of limited contrast and poor flexibility. In recent years, the most mature and comprehensive display technology in the market is organic light-emitting diode (OLED). [4] Compared with LCD, its self-luminous ability, transparency, true dark tone, and manufacturing flexibility are one of the highlights of OLED, and it has been widely used in the market. [5,6] The disadvantage is that it is technically difficult to make materials and control color stability, and at the same time, it has high cost, low yield, short lifespan, and

Complete Issue

“…34 The miniaturization is particularly challenging for red because of the technological challenges posed by the III-V semiconductors used for direct red emitters. 35 Other factors include reliability, efficiency, absorption, and environmental challenges of down-conversion materials 36 when applied to high spatial resolutions, such as those matching human visual acuity at normal direct-viewing distance (e.g., in a smartwatch or smartphone).…”

In‐Plane Sensing Opportunities in MicroLED Displays

“…The miniaturization is particularly challenging for red because of the technological challenges posed by the III‐V semiconductors used for direct red emitters 35 . Other factors include reliability, efficiency, absorption, and environmental challenges of down‐conversion materials 36 when applied to high spatial resolutions, such as those matching human visual acuity at normal direct‐viewing distance (e.g., in a smartwatch or smartphone).…”

Chromaticity-Tunable All-Inorganic Color Converters Fabricated by 3D Printing for Modular Plant Growth Lighting Devices

“…Natural light is seriously affected by the alternation of day and night, seasons, latitude, and weather conditions. , The regulation of artificial light has become an inevitable choice for improving the efficiency of agricultural production according to the rhythm of the growth and development of plants . At present, light-emitting diodes (LEDs) have become a new generation of lighting sources that are suitable for modern intelligent agricultural production due to their high brightness, energy efficiency, environmental protection, low voltage, adjustable wavelength, etc. − However, as a result of the poor chemical stability and thermal conductivity of the organic encapsulation resin in commercial LEDs, the aging and yellowing of resin and the degradation of the performance of the phosphor easily occur under long-term irradiation of high-power chips or in a high-temperature environment, resulting in light failure, color deviation, and short actual service lives of LEDs. In addition, the narrow emission bandwidth of commercial plant lighting LEDs cannot meet the requirements of the growth and development rhythms for different plants.…”