▎ 摘　　要

NOVELTY - Highly oriented graphitic film (114) has a graphitic material and/or a chemically fuctionalized graphitic material having chemically bonded graphene planes which are parallel to one another. The graphitic film has a thickness of 0.1 mm or less. The physical density of the film is 1.8 g/cm3 or more. The inter-plane spacing of the film is less than 0.4 nm. The oxygen content of the film is less than 1 wt.%. The electrical conductivity of the film is 3000 S/cm or more. USE - Highly oriented graphitic film is used in microelectronic device e.g. smart phone, tablet computer, flat-panel display, flexible display, LED, electronic watch, wearable electronic device, digital camera and microelectronic communication device (all claimed). ADVANTAGE - The highly oriented graphitic film has excellent electrical conductivity, thermal conductivity, physical density, tensile strength and elastic modulus. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) microelectronic device; and (2) preparation of highly oriented graphitic film, which involves preparing dispersion of pristine graphene sheets which are dispersed in a liquid medium to form pristine graphene liquid crystal phase, dispensing and depositing dispersion onto a surface of a supporting substrate to form a layer of pristine graphene, subjecting liquid crystal phase to an orientation-inducing stress, completely removing liquid medium from the pristine graphene to form a dried pristine graphene layer, optionally comprising dried pristine graphene layer to reduce thickness of pristine graphene layer, heat- treating pristine graphene layer at 1500 degrees C for sufficient period of time and compressing graphitic film to produce highly oriented graphitic film. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic drawing of a process for producing a film. Flakes of natural graphite (100) Graphite intercalation compounds (102) Flexible graphite foil (106) Expanded graphite flakes (108) Graphene film (114)