METHOD FOR MODIFYING AN INITIAL STRESS STATE OF AN ACTIVE LAYER TO A FINAL STRESS STATE

摘要

The method comprises the steps of: a) providing a first substrate (1) comprising an active layer (10) made of a first material having a Young's modulus E1 and a thickness h1; b) providing a second substrate 2 made of a second material of Young's modulus E2 and thickness h2; c) bending the first substrate 1 and the second substrate 2 such that each of them has a curvature radius of curvature R; d) bonding the second substrate 2 to the active layer 10 such that the second substrate 2 strictly follows the shape of the first substrate 1; And e) restoring the form of the initial stationary state of the second substrate 2; The method is that the second material of the second substrate 2 Flexible material that conforms to the thickness of the second substrate (2) And the radius of curvature is a relational It is noteworthy to comply with.