High-stability quantum dot color conversion layer and preparation method thereof

• Main Authors: WANG SHULI, ZHU LIHONG, CHEN ZHONG, GUO WEIJIE, SUN YUE, LIN YUE, YAN ZIJUN, WU TINGZHU
• Format: Patent
• Language: Chinese; English
• Published: 03.05.2024
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; SEMICONDUCTOR DEVICES

The invention discloses a high-stability quantum dot color conversion layer and a preparation method thereof.The high-stability quantum dot color conversion layer comprises a substrate and a black matrix which is arranged on the substrate and used for isolating and controlling pixels, a quantum dot layer is arranged in the black matrix, and a heat conduction coating is arranged on the black matrix; the side surface of the quantum dot layer is in contact with the heat-conducting coating; a surface modification layer is arranged on the upper surface of the quantum dot layer, the surface modification layer is obtained through deposition under the condition that the temperature is lower than 100 DEG C through ALD, and the thickness ranges from 5 nm to 100 nm; a protective layer is arranged on the surface modification layer, the protective layer is obtained through deposition at the temperature of 110-200 DEG C, and the thickness range of the protective layer is 5-100 nm. By using the quantum dot color conversion