PRODUCTION OF LIQUID CRYSTAL DISPLAY DEVICE

• Main Authors: HODATE MARI, OKI KENICHI, YANAI KENICHI, TAKIZAWA YUTAKA, TANAKA TSUTOMU, WADA TAMOTSU
• Format: Patent
• Language: English
• Published: 21.07.1995
• Edition: 6
• Subjects: ADVERTISING; BASIC ELECTRIC ELEMENTS; CRYPTOGRAPHY; 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; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; FREQUENCY-CHANGING; LABELS OR NAME-PLATES; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; SEALS; SEMICONDUCTOR DEVICES; SIGNS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

PURPOSE:To make the formation of a black matrix on a substrate possible without increasing the number of stages and to compatibly attain an improvement in opening rate and reduction of a cost. CONSTITUTION:An ITO film and a Cr film are laminated and formed on a glass 21 and are subjected to patterning to form at least drains, drain bus lines, sources and display electrodes 25. An operating semiconductor layer and a gate insulating film as well as gate electrodes and gate bus lines are formed. A black resin film is then formed over the entire surface and are thereafter subjected to patterning to form patterns, i.e., the black matrix or a part thereof. The Cr film on the display electrodes 25 is then removed with the patterns of the black resin film 30 to make the electrodes transparent.