Flexible display device and support device thereof

A flexible display, comprising:

• a flexible display screen;
• and
• a support device including a skeleton chain which includes a plurality of connected skeleton units;
• each of the skeleton units comprises a head portion and a tail portion joined to the head portion;
• the head portion has a first rotary surface, the first rotary surface is a cylindrical curved surface or a spherical surface;
• the tail portion comprises a cavity, and the cavity has a second rotary surface;
• a radius of the second rotary surface of one of the skeleton units is smaller than a radius of the first rotary surface of the skeleton unit adjacent to the one of the skeleton units;
• the second rotary surface of the one of the skeleton units enwraps a part of the first rotary surface of the skeleton unit adjacent to the one of the skeleton units such that the head portion of the skeleton unit adjacent to the one of the skeleton units is engaged with the cavity of the one of the skeleton units and is rotatable with respect to the cavity of the one of the skeleton units;
• wherein the support device further comprises a soft sheath for wrapping the skeleton chain;
• and the flexible display screen is attached to the skeleton chain by the soft sheath;
• and
• wherein the flexible display screen is attached to the skeleton chain of the support device.

A support device for a flexible display device, comprising:

• at least one skeleton chain, the skeleton chain comprising a first skeleton unit and a second skeleton unit;
• wherein the first skeleton unit comprises a first head portion and a first tail portion joined to the first head portion;
• the first head portion has a first rotary surface, the first rotary surface is a cylindrical curved surface or a spherical surface;
• the first tail portion comprises a first cavity, and the first cavity has a second rotary surface;
• wherein the second skeleton unit comprises a second head portion and a second tail portion joined to the second head portion;
• the second head portion has a first rotary surface, the first rotary surface of the second head portion is a cylindrical curved surface or a spherical surface;
• the second tail portion comprises a second cavity, and the second cavity has a second rotary surface;
• and
• wherein a radius of the second rotary surface of the second cavity is smaller than a radius of the first rotary surface of the first head portion;
• the second rotary surface of the second cavity warps a portion of the first rotary surface of the first head in such a interference fit manner that the second tail portion is rotatable with respect to the first head portion;
• and
• wherein the first skeleton unit further comprises a first bar-shaped structure, the first bar-shaped structure joins the first head portion to the first tail portion;
• the second skeleton unit further comprises a second bar-shaped structure, the second bar-shaped structure joins the second head portion to the second tail portion;
• the first bar-shaped structure comprises a straight bar having a circular-arc shaped indentation;
• the indentation is at an edge of a connection portion between the first head portion and the first bar-shaped structure, and is in a path along which the second tail portion rotates with respect to the first head portion.