Patent ID: 6226060
Filing Date: 2001-05-01
Classification: G02F,H05K

Abstract:
An active matrix type liquid crystal display device comprising:a pair of substrates, at least one of which is transparent;a liquid crystal layer interposed between said pair of substrates;means for generating scan pulses;means for generating image data;a plurality of scan lines, which are arranged dispersedly on one substrate of the pair of substrates and are connected to the means for generating scan pulses; anda plurality of data signal lines, which are arranged so as to cross with the plurality of the scan lines in a manner to form a matrix and are connected to the means for generating image data; andfurther, comprising, in a plurality of pixels surrounded by the plurality of the scan lines and the plurality of the data signal lines:transparent pixel electrodes arranged on one substrate of the pair of substrates,counter electrodes arranged to face the transparent pixel electrodes with the liquid crystal layer being held between them and supplied with a liquid crystal driving voltage, andan insulating film which covers respective semiconductor active elements for driving the pixels connected to the scan lines, the data signal lines, and the transparent pixel electrodes, respective scan lines, and respective data signal lines; whereinmaterial forming portions connecting the scan lines with the means for generating scan pulses, and connecting the data signal lines with the means for generating image data, a substantially similar composition which is an alloy of Cr containing at least a chemical element selected from the group consisting of Nb, Mo, Ta and W, and whereinthe scan lines and the means for generating scan pulses are connected to each other via a first opening formed in the insulating film, the data signal lines and the means for generating image data are connected to each other via a second opening formed in the insulating film, a polycrystalline thin film, which is connected to the means for generating scan pulses, is inserted into the first opening, and a polycrystalline thin film, which is connected to the means for generating image data, is inserted into the second opening, and the polycrystalline thin film is composed of indium tin oxide, which is made of mainly indium oxide and added tin oxide, having a specific resistance of, at the utmost, 6.times.10.sup.-4 .OMEGA.cm.