Knee bolster device for vehicle

A knee bolster device for a vehicle, comprising:

• a lower crash pad panel made up of an injection-molded composite material having a continuous fiber and a thermoplastic material woven in a net shape to form woven fabric and so that the woven fabric is stacked in a multi-layered shape thereto at a rear surface of the lower crash pad panel to improve rigidity of the lower crash pad panel, wherein the rear surface of the lower crash pad panel faces a forward direction of the vehicle;
• a shock absorbing foam mounted on the rear surface of the lower crash pad panel, the shock absorbing foam being configured to absorb an impact;
• and
• a rear supporting bracket formed at one side of a cowl cross bar to be spaced apart from a rear side of the shock absorbing foam, the rear side facing the forward direction of the vehicle at a predetermined interval and the rear supporting bracket having one end opened, wherein the rear supporting bracket is configured to absorb the impact while deforming together with the shock absorbing foam.