LCD is a nonemissive technology where a unit of backlight source is used to create light propagation through a liquid crystal panel (the polarizer absorbs ≈50% of the incident light) and then color filters are used to convert this mixture of white light into perfect red, green, and blue color. ![]() In 2000s, the liquid crystal display (LCD) was successfully introduced as an alternative to CRT technology. Because of their prominent features such as good response rate and best visual depth, CRT-based televisions have gained splendid popularity in the display industry for nearly four decades, from 1950s to 1990s. The design of CRT is comprised of the vacuum tube having an electron gun which generates the beam of guided electrons which is then directed toward the specially designed screen to emit primary colors, i.e., red, green, and blue (RGB). In display technology, the very first cathode ray tube (CRT)-based color television was introduced in 1940s, leading to the first color broadcast in 1954. With the advancement in technology, the use of “display technology” in our daily life is increasing abruptly because of its broad range of applications such as televisions, desktop monitors, smartphones health care devices, and data projectors. In this review, the various mass transfer display technologies and color conversion strategies which are being used for the realization of a full-color display are discussed. Besides micro-LEDs, the other option for future displays includes the usage of color conversion medium (phosphor/ quantum dots) to convert some of the blue light into other colors. However, to attain a remarkable position in future display technology, the micro-LEDs need to overcome problems associated with mass transfer and its high cost of manufacturing. In the above scenario, the micro-LEDs (light-emitting diodes) display which has outstanding features, such as low power consumption, wider color gamut, longer lifetime, and short response-time, can replace traditional liquid crystal displays and organic LEDs-based display technologies. ![]() High-resolution, transparent, and flexible displays are the main types of display to be used in future. The demand for high-performance displays is continuously increasing because of their wide range of applications in smart devices (smartphones/watches), augmented reality, virtual reality, and naked eye 3D projection.
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