Liquid crystal display panel and method for manufacturing the same

A liquid crystal display panel including an active matrix substrate, another substrate facing the active matrix substrate and liquid crystal intervening between the two substrates, wherein:

• the active matrix substrate comprises a transparent substrate, on which a plurality of scan lines, a plurality of signal lines crossing the scan lines, switching elements provided at the intersections of the scan lines and signal lines, pixel electrodes connected to the switching elements and connecting electrodes provided on leading end portions of the scan lines and signal lines are formed;
• at least a connecting part of the connecting electrodes is formed by using aluminum or alloy mainly composed thereof;
• and
• in an active matrix substrate area with the intervening liquid crystal present therein, an insulating film covers the surfaces of uppermost layer scan lines, signal lines and electrodes of the switching elements.

A liquid crystal display panel including an active matrix substrate, another substrate facing the active matrix substrate and liquid crystal intervening between the two substrates, wherein:

• the active matrix substrate comprises a transparent substrate, on which a plurality of scan lines, a plurality of signal lines crossing the scan lines, switching elements provided at the intersections of the scan lines and signal lines, pixel electrodes connected to the switching elements, opposite electrodes and connecting electrodes provided on leading end portions of the scan lines and signal lines are formed;
• at least a connecting part of the connecting electrodes is formed by using aluminum or alloy mainly composed thereof;
• and
• in an active matrix substrate area with the intervening liquid crystal present therein, an insulating film covers the surfaces of uppermost layer scan lines, signal lines, electrodes of the switching elements and opposed electrodes.

A liquid crystal display panel including an active matrix substrate, another substrate facing the active matrix substrate and liquid crystal intervening between the two substrates, wherein:

• the active matrix substrate comprises a transparent substrate, on which a plurality of signal lines, a plurality of switching elements provided at the plurality of signal lines, pixel electrodes connected to the switching elements and connecting electrodes provided on leading end portions of the signal lines are formed;
• at least a connecting part of the connecting electrodes is formed by using aluminum or alloy mainly composed thereof;
• and
• portions of the signal lines in an area with the intervening liquid crystal therein are covered by an insulating film.

A method of manufacturing of a liquid crystal display panel comprising steps of:

• forming terminal electrodes by selectively forming a first metal film on a transparent substrate;
• forming an inter-layer insulating film with a terminal contact hole reaching the first metal film;
• selectively forming a second metal film, which is a single-layer film of aluminum or an alloy thereof or a laminate film including an uppermost layer of aluminum or an alloy thereof, in the terminal contact hole;
• and
• forming a protective insulating film with a terminal contact hole.

A method of manufacturing of a liquid crystal display panel comprising steps of:

• forming terminal electrode by selectively forming a first metal film on a transparent substrate;
• forming an inter-layer insulating film with a terminal contact hole reaching the first metal film;
• selectively forming a second metal film which is a single-layer film of aluminum or an alloy thereof or a laminate film including an uppermost layer of aluminum or an alloy thereof and an insulating film which is an aluminum oxide film or a laminate film of aluminum oxide and aluminum hydroxide thereon in the terminal contact hole, and
• forming a protective insulating film and an insulating film with a terminal contact hole reaching the second metal film.

A method of manufacturing of a liquid crystal display panel comprising steps of:

• forming terminal electrodes by selectively forming a first metal film on a transparent substrate;
• forming an inter-layer insulating film with a terminal contact hole reaching the first metal film;
• and
• selectively forming a second metal film, which is a single-layer film of aluminum or an alloy thereof or a laminate film including an uppermost layer of aluminum or an alloy thereof, in the terminal contact hole,
• forming an insulating film, which is an aluminum oxide film or a laminate film of aluminum oxide and aluminum hydroxide, to cover the surfaces of uppermost layer lead lines and electrodes.