OLED display panel and color coordinate adjusting method thereof

• Main Authors: WEI BINGSHUO, TAN QI, ZHANG LEI, LI DANDAN
• Format: Patent
• Language: Chinese; English
• Published: 14.10.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; SEMICONDUCTOR DEVICES

The invention relates to the technical field of display, in particular to an OLED display panel and a color coordinate adjusting method thereof. The OLED display panel comprises an anode layer, a light-emitting device module and a cathode layer which are sequentially arranged in the light-emitting direction, the light-emitting device module comprises a plurality of functional layers, and at least one functional layer is doped with a piezoelectric material which stretches out and draws back in the light-emitting direction under the action of an electric field; the film thickness of the functional layer doped with the piezoelectric material is increased or decreased along with the stretching of the piezoelectric material under the action of an electric field, so that the color coordinates of the OLED display panel are changed. The piezoelectric material is doped into one or more functional layers of the light-emitting device module, so that the film thickness of the corresponding functional layers is automatica