Optical cross-talk reduction in a quantum-dot-based full-color micro-light-emitting-diode display by a lithographic-fabricated photoresist mold

32‐1: Invited Paper: Review of Micro‐light‐emitting‐diode Technology for Micro‐display Applications

“…When the layers are implemented on subpixels, the occurrences of color crosstalk within adjacent subpixels are inevitable. To resolve this matter, a black matrix was tried to separate each subpixel and eventually block the crosstalk as depicted in Figure 3 [36]. As like the QD, the material, as well as the process for the black matrix must be studied further.…”

High performance color‐converted micro‐LED displays

“…However, the fabrication process is complicated since different semiconductor substrates are required for growing blue/green micro‐LEDs and red micro‐LED. Another simpler method utilizes single‐color micro‐LEDs to excite the color converters, such as phosphors or quantum dots (QDs) . For example, UV LED array with pixelated RGB QDs can achieve high efficiency and wide color gamut because no color filter is needed.…”

65‐2: Invited Paper: Enabling Technology for MicroLED Display Based on Quantum Dot Color Converter

“…Although pick-and-place technology could enable the demonstration of micro-LED displays based on RGB micro-LEDs, several technical issues, such as complicated drive circuit, misalignment of pixels during multiple transfers, and difficult mass transfer, have delayed its commercialization. As an alternative way for demonstrating fullcolor display, the use of color-conversion materials with excitation sources, such as ultraviolet (UV) or blue micro-LEDs, has attracted much attention [2]. Phosphors have been widely used to convert blue light into green or red light.…”