Display module for achieving seamless splicing display, method for manufacturing same, and display device

A display module, comprising:

• a first display panel comprising a first edge sealing region;
• a second display panel comprising a second edge sealing region, wherein the second display panel and the first display panel are disposed in a same layer and spliced with each other, and the second edge sealing region is abutted against the first edge sealing region;
• a third display panel comprising a third edge sealing region, wherein the third display panel is disposed on backlight sides of the first display panel and the second display panel, wherein both an orthographic projection of the first edge sealing region onto the third display panel and an orthographic projection of the second edge sealing region onto the third display panel fall within a display region of the third display panel;
• a dimming LCD panel comprising a fourth edge sealing region, wherein the dimming LCD panel and the third display panel are disposed in a same layer and spliced with each other, and the fourth edge sealing region is abutted against the third edge sealing region;
• a first polarizer disposed on light-emitting sides of the first display panel and the second display panel, and provided with a first opening, wherein an orthographic projection of the first opening onto the reference plane covers orthographic projections of the first edge sealing region and the second edge sealing region onto the reference plane;
• a second polarizer disposed on backlight sides of the third display panel and the dimming LCD panel, and provided with a second opening, wherein an orthographic projection of the second opening onto the reference plane covers orthographic projections of the third edge sealing region and the fourth edge sealing region onto the reference plane;
• and
• a third polarizer disposed on the backlight sides of the first display panel and the second display panel, and disposed on the light-emitting sides of the third display panel and the dimming LCD panel;
• wherein the first display panel, the second display panel, and the third display panel are all liquid-crystal display (LCD) panels;
• an orthographic projection of a display region of at least one of the first display panel and the second display panel onto a reference plane is at least partially overlapped with an orthographic projection of a dimming region of the dimming LCD panel onto the reference plane, wherein the reference plane is parallel to a display surface of the display module;
• and a direction of a polarization axis of the first polarizer is parallel to a direction of a polarization axis of the second polarizer, and is perpendicular to a direction of a polarization axis of the third polarizer.