Manufacturing method for COA substrate

• Main Author: Deng Weijia
• Format: Patent
• Language: English
• Published: 27.02.2018
• Subjects: BASIC ELECTRIC ELEMENTS; 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; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; SEMICONDUCTOR DEVICES; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

The disclosure provides a manufacturing method for COA substrate: utilizing PEDOT, PProDOT or PEDOT derivatives with or without doping with graphene, or PProDOT derivatives replaces traditional ITO to be conductive materials of pixel electrodes; quantum dots can be modified by ProDOT derivatives or EDOT derivatives which including carboxyl group, and quantum dot color filters of red filter layers, green filter layer and blue filters layers comprised on the TFT substrate are formed by the method of electric chemical deposition based on a property of the aforementioned two being able to polymerize under influences of electric field and pixel electrode patterns on the TFT substrate. Therefore, zero waste can be achieved in quantum dots, a usage of quantum dots can be decreased, indium usage can be decreased, researching and development cost can be reduced, and the circumstances can be protected, furthermore, the QDs color film having the better bonding strength bonds the counter electrode layer through chemical bond, and avoids adverse results as a peel is caused by insufficient bonding strength between photoresist and substrate.