REINFORCING STRUCTURE OF THIN-TYPE ELECTRONIC APPARATUS

• Main Author: TOMINO TADASHI
• Format: Patent
• Language: English
• Published: 24.07.1986
• Subjects: BASIC ELECTRIC ELEMENTS; BOOK COVERS; BOOKBINDING; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; FILES; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; LOOSE LEAVES; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS; MOVABLE-STRIP WRITING OR READING APPARATUS; PERFORMING OPERATIONS; PRINTED CIRCUITS; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITYFEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOTOTHERWISE PROVIDED FOR; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; SEMICONDUCTOR DEVICES; SPECIAL PRINTED MATTER; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSPORTING

PURPOSE:To thin an apparatus largely by working a lead frame for a built-in IC element as a reinforcing frame in combination and also operating the lead frame as a circuit substrate in combination. CONSTITUTION:A metallic lead frame is expanded in approximately the same size as the size of the external form of an apparatus, and key contacts 1-1, connecting leads 1-2 between a liquid-crystal display element and an IC, an IC bonding region 1-3, connecting terminals 1-4 for chip parts except the IC, connecting terminals 1-5 with electrode terminals for a key sheet, holes 2 for bonding sealing resins on the surface and the back, etc. are arranged properly by using the excess section of the frame. The surface and the back are sealed with a resin 5 with the exception of the key contacts 1-1, the leads 1-2 and the terminals 1-5. Sections 6 are punched, and required circuits are made independent electrically. A solar cell panel 8 is placed on a predetermined position, and the flexible key sheet 9 with terminals and movable contacts for a key where opposite to the terminals 1-5 and a decorative display film 10 are laminated, thus completing a card desk-top calculator. A conventional reinforcing frame is unnecessitated, thus forming an apparatus in extremely thin size.