公开(公告)号：EP1244736A4

公开(公告)日：2003-01-15

申请号：EP00975463

申请日：2000-10-26

Applicant: CANDESCENT INTELLECTUAL PROP

Inventor： PORTER JOHN D ,  SKINNER MICHAEL P ,  SIMMONS STEPHANIE

IPC: C08J3/09 ,  C08J5/18 ,  C08K5/3415 ,  H01J9/02 ,  C08K5/34 ,  C08L69/00

CPC classification number: C08J3/096 ,  C08J3/09 ,  C08J3/091 ,  C08J5/18 ,  C08J2369/00 ,  C08K5/3415 ,  H01J9/025 ,  H01J2329/00 ,  C08L69/00

Abstract: A liquid chemical formulation suitable for making a thin solid polycarbonate film contains polycarbonate material and a liquid typically capable of dissolving the polycarbonate material to a concentration of at least 1%. The polycarbonate material may consist of homopolycarbonate or/and copolycarbonate. Examples of the liquid include pyridine, a ring-substituted pyridine derivative, pyrrole, a ring-substituted pyrrole derivative, pyrrolidine, a pyrrolidine derativive, chlorobenzene, and cyclohexanone. A liquid film (36A) of the formulation is formed over a substructure (30) and processed to remove the liquid. The resultant solid polycarbonate film can later serve as a track layer through which charged particles (70) are passed to form charged-particle tracks (72). Apertures (74) are created through the track layer by a process that entails etching along the tracks. The aperture-containing polycarbonate track layer is typically used in fabricating a gated electron-emitting device.