NOVELTY - Carbon fiber structure (100) comprises a carbon fiber-reinforced carbon composite material including carbon fibers and a carbonaceous matrix, where the carbon fibers are configured by a linear fiber and form thin piece bodies in which a longitudinal direction of the carbon fibers is oriented in parallel to a surface direction of the carbon fiber structure within the carbonaceous matrix, and the structure is configured by a laminate having the thin piece bodies laminated in it.    USE - The carbon fiber structure is useful in silicon single crystal pull-up apparatuses, compound semiconductor crystal pull-up apparatuses, manufacturing apparatus of silicon for solar cell (e.g. silicon thin film forming apparatus), apparatus parts in atomic energy, nuclear fusion or metallurgy field, space parts and aerospace parts.    ADVANTAGE - The carbon fiber structure: is homogenous and free from defects; provides easily manufactured thin walled carbon fiber reinforced carbon composite material with high strength, heat resistance at high temperature, high chemical stability with low warp or deformation even under shrinkage; and provides fibers that are easily become linear and provides joining strength in thickness direction.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for manufacturing of the carbon fiber structure comprising: (a) suspending carbon fibers and a binder, which is a precursor component of the carbonaceous matrix in a liquid and adding an aggregating agent to aggregate the carbon fibers and binder to form flocks; (b) filtering the liquid having flocks in it by a die having a porous die face to laminate the flocks on a surface of the porous die face to form a laminate of the flocks; (c) pressurizing the laminate of flocks and orienting the longitudinal direction of the carbon fibers in parallel to the surface direction of the porous die face to convert the flocks into thin pieces to form a laminate of thin piece body precursor; and (d) calcining the precursor and carbonizing the binder to form the carbonaceous matrix, thus forming the laminate of thin piece bodies.    DESCRIPTION OF DRAWING(S) - The figure shows a perspective view of the carbon fiber structure.    Carbon fiber structure (100)