Display panel and preparation method thereof, display master mask and display device

• Main Author: PENG NINGKUN
• Format: Patent
• Language: Chinese; English
• Published: 12.08.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; SEMICONDUCTOR DEVICES

The invention discloses a display panel and a preparation method thereof, a display master mask and a display device. The preparation method comprises the following steps: providing a supporting substrate; forming a substrate base plate; pixel structures are formed in all the display panel areas on the side, away from the supporting substrate, of the substrate, and a mark structure is formed in a cutting area on the side, away from the supporting substrate, of the substrate; a first protective film covering the display panel area and the cutting area is arranged on the sides, away from the substrate, of the pixel structures and the marking structures; the first protective film is in complete contact with the surface of one side, deviating from the substrate, of the marking structure; stripping the support substrate to form a display master mask; and determining the position of a cutting line in the cutting area based on the cutting mark, and cutting the display mother set along the cutting line to form a plur