Patent ID: 11917850
Assignee: WUHAN TIANMA MICROELECTRONICS CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 16:
17. A preparation method of a display panel, comprising:
preparing a substrate plate, comprising a plurality of light-emitting areas and a plurality of non-light-emitting areas, wherein the plurality of light-emitting areas are spaced apart from each other by the plurality of non-light-emitting areas;
preparing a light-emitting element in each of the plurality of light-emitting areas, wherein the light-emitting element comprises an anode and a cathode that are arranged opposite to each other, and a light-emitting layer located between the anode and the cathode; and
preparing a cover layer on a light-emission side of the light-emitting element, wherein the cover layer comprises a substrate doped with first dopants, wherein the first dopants are magnetic; and wherein when an external magnetic field intensity applied to the cover layer is changed by an amount greater than a preset magnetic field intensity, the first dopants in the substrate are rearranged from a first mode to a second mode;
wherein projections of the anode, the cathode, and the light-emitting layer of one light-emitting element of the plurality of light-emitting elements on the cover layer overlap with each other, and overlapping parts of the projections are all located in one of the plurality of light-emitting areas,
wherein the cover layer comprises a first section and a second section, wherein the first section is associated with the plurality of light-emitting areas and the second section is associated with the plurality of non-light-emitting areas in a direction perpendicular to a surface of the display panel, and
wherein in the first section, a doping concentration of the first dopants is a first concentration C1, and in the second section, a doping concentration of the first dopants is a second concentration C2, wherein C2≥C1>0, or wherein C2>0 and C1=0.