IC CARD WITH DISPLAY AND ITS LIQUID CRYSTAL DISPLAY

• Main Author: MATSUMOTO FUMINAO
• Format: Patent
• Language: English
• Published: 02.11.2001
• Edition: 7
• Subjects: ADVERTISING; BOOK COVERS; BOOKBINDING; CALCULATING; COMPUTING; COUNTING; CRYPTOGRAPHY; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; DISPLAY; DISPLAYING; EDUCATION; FILES; FREQUENCY-CHANGING; HANDLING RECORD CARRIERS; LABELS OR NAME-PLATES; LOOSE LEAVES; MOVABLE-STRIP WRITING OR READING APPARATUS; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PERFORMING OPERATIONS; PHYSICS; PRESENTATION OF DATA; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITYFEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOTOTHERWISE PROVIDED FOR; RECOGNITION OF DATA; RECORD CARRIERS; SEALS; SIGNS; SPECIAL PRINTED MATTER; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; TRANSPORTING

PROBLEM TO BE SOLVED: To make a liquid crystal display thin to an extent that it can be mounted on an IC card and to devise arrangement and structure of a connecting part of a circuit board in a polymer film liquid crystal display so that defective connection due to deformation of the connecting part with circuit film is surely prevented. SOLUTION: The liquid crystal display panel is formed by using a polymer film substrate. Electrical connecting parts for the liquid crystal display and an external circuits are intensively arranged in a narrow area when a liquid crystal panel is mounted on the IC card. The connecting parts amount the circuit boards and the external circuit film are intensively arranged on short sides of the IC card. The rear sides of the connecting parts amount electrodes of the liquid crystal display and the external circuits to perform display control of the liquid crystal display are covered by an optical member such as a polarizing plate, a reflection plate and a phase difference plate.