Assembled screen unit and display module

An assembled screen unit, comprising a display panel, a frame, a sound-production stimulation unit, a supporting structure and an acoustic cavity, wherein the frame, the sound-production stimulation unit, and the supporting structure are located on a back side of the display panel;

• the supporting structure is located on a side of the sound-production stimulation unit away from the display panel, and the supporting structure is configured to support the sound-production stimulation unit;
• the back side of the display panel comprises a central region and an edge region;
• the sound-production stimulation unit is in contact with the central region, and the sound-production stimulation unit is configured to stimulate vibration of the display panel to produce sound;
• and
• an orthographic projection of the frame on the back side of the display panel is located in the edge region, and the frame is configured to support the display panel;
• wherein the frame comprises a first sub-portion and a second sub-portion, and an orthographic projection of the second sub-portion on the back side of the display panel is closer to the central region than an orthographic projection of the first sub-portion on the back side of the display panel;
• a first vibration isolation portion is provided between the first sub-portion and the display panel;
• a second vibration isolation portion is provided between the second sub-portion and the display panel;
• and the first vibration isolation portion has a thickness less than the second vibration isolation portion;
• wherein the second sub-portion is formed by extending out from a side of the first sub-portion close to the central region in a direction approaching the central region;
• and
• a gap between a side of the second sub-portion close to the display panel and the edge region is greater than a gap between the side of the first sub-portion close to the display panel and the edge region;
• wherein the acoustic cavity is located on a side of the frame facing away from the display panel, and the acoustic cavity is connected to the second sub-portion;
• and
• the acoustic cavity is fastened to the back side of the display panel in a closed manner, and an orthographic projection of the acoustic cavity on the back side of the display panel covers the central region.