Array substrate and manufacturing method thereof, and liquid crystal display

• Main Author: PIAO XIANGZHEN
• Format: Patent
• Language: English
• Published: 15.07.2015
• 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 invention discloses an array substrate and a manufacturing method thereof, and a liquid crystal display (LCD). The substrate of the array substrate is provided with a plurality of conductive pictures and insulating layers; via holes are formed in the insulating layer; the conductive picture at least comprises a first conductive picture; the insulating layer at least comprises a first insulating layer and a second insulating layer; the first conductive picture is formed above the first insulating material and covers the lower side of the second insulating layer; the via hole comprises a first via hole and a second via hole; the first via hole runs through the first insulating layer and the second insulating layer; the second via hole runs through the second insulating layer and over the first conductive picture; and a protecting layer is formed between the first conductive picture and the second insulating layer. The array substrate and manufacturing method thereof, and LCD can protect the conductive pictures in etching the via hole by setting the protecting layer on the conductive pictures below the via hole so as to prevent from over-etching and guarantee the display effect of the LCD.