A hinge mechanism mountable on a support mechanism for carrying a flexible display, the support mechanism including abase seat, and first and second substrate units which are respectively disposed at two sides of the base seat opposite in a left-right direction, said hinge mechanism comprising:
- amounting assembly securely mountable on the base seat, said mounting assembly having first and second pivoted portions opposite to each other in the left-right direction and respectively adjacent to the first and second substrate units;
- a first linking unit disposed at and pivotable relative to said first pivoted portion, and including
- a first inner pivot arm having a first inner pivot end which is pivotably connected to said first pivoted portion about a first inner pivot axis, and a first inner connecting end which is opposite to said first inner pivot end to be turned about the first inner pivot axis during pivoting of said first linking unit,
- a first outer pivot arm having a first outer slided body which extends in the left-right direction to terminate at a first outer pivot end that is disposed outboard of said first inner pivot end, said first outer pivot end being pivotably connected to said first pivoted portion about a first outer pivot axis which is offset from the first inner pivot axis in an up-down direction with a first height such that said first outer slided body is turned about the first outer pivot axis during the pivoting of said first linking unit, and
- a first slide piece connected with the first substrate unit, and having a first slide body which extends in the left-right direction to have a proximate slide end that is proximate to said mounting assembly and that is slidable on said first outer slided body, and a distal connecting end that is distal from said mounting assembly and that is connected with said first inner connecting end;
- and
- a second linking unit disposed at and pivotable relative to said second pivoted portion, and including
- a second inner pivot arm having a second inner pivot end which is pivotably connected to said second pivoted portion about a second inner pivot axis, and a second inner connecting end which is opposite to said second inner pivot end to be turned about the second inner pivot axis during pivoting of said second linking unit,
- a second outer pivot arm having a second outer slided body which extends in the left-right direction to terminate at a second outer pivot end that is disposed outboard of said second inner pivot end, said second outer pivot end being pivotably connected to said second pivoted portion about a second outer pivot axis which is offset from the second inner pivot axis in the up-down direction with a second height such that said second outer slided body is turned about the second outer pivot axis during the pivoting of said second linking unit, and
- a second slide piece connected with the second substrate unit, and having a second slide body which extends in the left-right direction to have a proximate slide end that is proximate to said mounting assembly and that is slidable on said second outer slided body, and a distal connecting end that is distal from said mounting assembly and that is connected with said second inner connecting end, wherein
- during the pivoting of said first linking unit, turning of said first inner connecting end brings said distal connecting end of said first slide body into an outward movement away from said first outer slided body, and during the pivoting of said second linking unit, turning of said second inner connecting end brings said distal connecting end of said second slide body into an outward movement away from said second outer slided body so as to place the first substrate unit and the second substrate unit from a parallel unfolded state to an upright folded state, and form a leeway space between the first and second substrate units.