Liquid crystal display device
OwnerTakuya Takahashi, Isao Ikuta +4inventors
InventorsTakuya Takahashi, Isao Ikuta, Katsumi Tamura, Youichi Sakaki, Ken-Ichi Onisawa, Masahiko Ando
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Abstract
A liquid crystal display device in which at least one of the scanning line GL, data line DL, source and drain electrodes SD1, SD2 of the thin film transistor TFT comprises a laminated film containing a first electroconductive film and a second electroconductive film, the first electroconductive film being made of a molybdenum-based Mo alloy and the second electroconductive film being made of a silver-based Ag alloy and disposed on the first electroconductive film, can be produced at low cost.
Claims21
A liquid crystal display device comprising a pair of substrates, a liquid crystal layer sandwiched between said pair of substrates, plural scanning lines formed on one of said substrates, plural data lines crossing said scanning lines matrix-wise, thin film transistors disposed close to the crossing points of said scanning and data lines, and pixel electrodes connected to said thin film transistors, wherein:
- at least one of said scanning line, said data line, and the source and drain electrodes of said thin film transistor comprises a laminated film containing a first electroconductive film and a second electroconductive film;
- said first electroconductive film is made of a molybdenum-based alloy;
- and
- said second electroconductive film is made of a silver-based alloy and disposed on said first electroconductive film.
A liquid crystal display device comprising a pair of substrates, a liquid crystal layer sandwiched between said pair of substrates, plural scanning lines formed on one of said substrates, plural data lines crossing said scanning lines matrix-wise, thin film transistors disposed close to the crossing points of said scanning and data lines, and pixel electrodes connected to said thin film transistors, wherein:
- each of said data lines comprises a laminated film containing a first electroconductive film and a second electroconductive film;
- said first electroconductive film is made of a molybdenum-based alloy;
- and
- said second electroconductive film is made of a silver-based alloy and disposed on said first electroconductive film.
A liquid crystal display device comprising a pair of substrates, a liquid crystal layer sandwiched between said pair of substrates, plural scanning lines formed on one of said substrates, plural data lines crossing said scanning lines matrix-wise, thin film transistors disposed close to the crossing points of said scanning and data lines, pixel electrodes connected to said thin film transistors, gate insulating films covering said scanning lines almost entirely, and protective insulating films covering said data lines and said thin film transistors almost entirely, wherein:
- each of said data lines comprises a laminated film containing a first electroconductive film and a second electroconductive film;
- said first electroconductive film is made of a molybdenum-based alloy;
- said second electroconductive film is made of a silver-based alloy and disposed on said first electroconductive film;
- and
- at the terminal of each said data line is formed a contact hole passing through said protective insulating film and said second electroconductive film.
A liquid crystal display device comprising a pair of substrates, a liquid crystal layer sandwiched between said pair of substrates, plural scanning lines formed on one of said substrates, plural data lines crossing said scanning lines matrix-wise, thin film transistors disposed close to the crossing points of said scanning and data lines, pixel electrodes connected to said thin film transistors, gate insulating films covering said scanning lines almost entirely, and protective insulating films covering said data lines and said thin film transistors almost entirely, wherein:
- each of said data lines comprises a laminated film containing a first electroconductive film and a second electroconductive film;
- said first electroconductive film is made of a molybdenum-based alloy;
- said second electroconductive film is made of a silver-based alloy and disposed on said first electroconductive film;
- at the terminal of each said data line is formed a contact hole passing through said protective film and said second conductive film;
- and
- said first electroconductive film at the bottom of each said contact hole is in contact with a transparent electroconductive film.
A liquid crystal display device comprising a pair of substrates, a liquid crystal layer sandwiched between said pair of substrates, plural scanning lines formed on one of said substrates, plural data lines crossing said scanning lines matrix-wise, thin film transistors disposed close to the crossing points of said scanning and data lines, and pixel electrodes connected to said thin film transistors, wherein:
- the source and drain electrodes of each said thin film transistor comprise a laminated film containing of a first electroconductive film and a second electroconductive film;
- said first electroconductive film is made of a molybdenum-based alloy;
- and
- said second electroconductive film is made of a silver-based alloy and disposed on said first electroconductive film.
A liquid crystal display device comprising a pair of substrates, a liquid crystal layer sandwiched between said pair of substrates, plural scanning lines formed on one of said substrates, plural data lines crossing said scanning lines matrix-wise, thin film transistors disposed close to the crossing points of said scanning and data lines, gate insulating films covering said scanning lines almost entirely, and protective insulating films covering said data lines and said thin film transistors almost entirely, wherein:
- the source and drain electrodes of each said thin film transistor comprise a laminated film containing a first electroconductive film and a second electroconductive film;
- said first electroconductive film is made of a molybdenum-based alloy;
- said second electroconductive film is made of a silver-based alloy and disposed on said first electroconductive film;
- and
- each said source electrode has formed therein a contact hole passing through said protective insulating film and said second electroconductive film.
A liquid crystal display device comprising a pair of substrates, a liquid crystal layer sandwiched between said pair of substrates, plural scanning lines formed on one of said substrates, plural data lines crossing said scanning lines matrix-wise, thin film transistors disposed close to the crossing points of said scanning and data lines, and pixel electrodes connected to said thin film transistors, wherein:
- each of said scanning lines comprises a laminated film containing of a first electroconductive film and a second electroconductive film;
- said first electroconductive film is made of a molybdenum-based alloy;
- and
- said second electroconductive film is made of a silver-based alloy and disposed on said first electroconductive film.
A liquid crystal display device comprising a pair of substrates, a liquid crystal layer sandwiched between said pair of substrates, plural scanning lines formed on one of said substrates, plural data lines crossing said scanning lines matrix-wise, thin film transistors disposed close to the crossing points of said scanning and data lines, pixel electrodes connected to said thin film transistors, gate insulating films covering said scanning signal lines almost entirely, and protective insulating films covering said picture signal lines and said thin film transistors almost entirely, wherein:
- each of said scanning signal lines comprises a laminated film containing of a first electroconductive film and a second electroconductive film;
- said first electroconductive film is made of a molybdenum-based alloy;
- said second electroconductive film is made of a silver-based alloy and disposed on said first electroconductive film;
- and
- at the terminal of each said scanning line is formed a contact hole passing through said protective insulating film, said gate insulating film and said second electroconductive film.
A liquid crystal display device comprising a pair of substrates, a liquid crystal layer sandwiched between said pair of substrates, plural scanning lines formed on one of said substrates, plural data lines crossing said scanning lines matrix-wise, thin film transistors disposed close to the crossing points of said scanning and data lines, pixel electrodes connected to said thin film transistors, gate insulating films covering said scanning lines almost entirely, and protective insulating films covering said data lines and said thin film transistors almost entirely, wherein:
- each of said scanning lines comprises a laminated film containing of a first electroconductive film and a second electroconductive film;
- said first electroconductive film is made of a molybdenum-based alloy;
- said second electroconductive film is made of a silver-based alloy and disposed on said first electroconductive film;
- at the terminal of each said scanning line is formed a contact hole passing through said protective insulating film, said gate insulating film and said second electroconductive film;
- and
- said first electroconductive film at the bottom of said contact hole is in contact with a transparent electroconductive film.
A liquid crystal display device comprising a pair of substrates, a liquid crystal layer sandwiched between said pair of substrates, plural scanning lines formed on one of said substrates, plural data lines crossing said scanning lines matrix-wise, thin film transistors disposed close to the crossing points of said scanning and data lines, pixel electrodes connected to said thin film transistors, gate insulating films covering said scanning lines almost entirely, and protective insulating films covering said data lines and said thin film transistor almost entirely, in which the driver chips are packaged according to the chip-on-glass (COG) system, wherein:
- the plural lines connected to the input side of said driver chips comprise a first line group composed of at least one line and a second line group composed of the lines not belonging to the first line group;
- and
- said first and second line groups are arranged with the interposition therebetween of at least one of said gate insulating film and said protective insulating film.
Dependencies are inferred from the claim text.