| 摘要 |
PCT No. PCT/FR93/00375 Sec. 371 Date Feb. 14, 1994 Sec. 102(e) Date Feb. 14, 1994 PCT Filed Apr. 15, 1993 PCT Pub. No. WO93/21662 PCT Pub. Date Oct. 28, 1993.The method comprises the following steps: (a) producing a first cell (1) comprising a first substrate (4), a first optically active layer (5), and between said substrate and said active layer, a soluble thin layer (12); (b) producing a second cell (2) comprising a second substrate (8) and a second optically active layer (9), different in nature from the first; (c) placing said two cells face to face so that the active layers face each other; (d) uniting the two elementary cells via their active layers by means of a transparent adhesive (3); and (e) dissolving the material of the soluble layer while leaving the other materials intact, thereby separating the first substrate from the remainder of the structure, without dissolving the first substrate.
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