Display panel and preparation method thereof

• Main Authors: LUO CHUANBAO, LU MACAI
• Format: Patent
• Language: Chinese; English
• Published: 26.02.2021
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; SEMICONDUCTOR DEVICES

The invention provides a display panel and a preparation method thereof. The display panel comprises a substrate layer, a first metal layer located on the substrate layer, a thermal oxidation protection layer located on the first metal layer, a buffer layer located on the substrate layer and covering the thermal oxidation protection layer, an active layer located on the buffer layer, a gate insulating layer positioned on the active layer and the buffer layer, and a second metal layer positioned on the gate insulating layer, wherein the first metal layer comprises a source electrode and a drainelectrode, and the second metal layer comprises a grid electrode and a grid line. According to the invention, the source/drain electrode of a thin film transistor is arranged on the surface of the substrate layer, so shading effect is achieved, and the frequency of a yellow light process is reduced. 本发明提供一种显示面板及其制备方法。所述显示面板包括：衬底层、位于所述衬底层之上的第一金属层、位于所述第一金属层之上的热氧化保护层、位于所述衬底层之上且覆盖所述热氧化保护层的缓冲层、位于所述缓冲层之上的有源层、位于所述有源层和所述缓冲层之上的栅绝