Active matrix type liquid crystal display device having chromium alloy connecting portions which are other than the material of the data line or gate line

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;
• a scan pulse generating chip;
• an image data generating chip;
• a plurality of scan lines, which are arranged dispersedly on one substrate of the pair of substrates and are connected to the scan pulse generating chip;
• and a 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 image data generating chip;
• flexible printed cables respectively connected to the scan pulse generating chip and the image data generating chip;
• and
• further comprising, in a plurality of the 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 on another substrate with the liquid crystal layer being held therebetween and supplied with a liquid crystal driving voltage;
• and
• an 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;
• wherein the scan lines and the scan pulse generating chip are connected to each other via a first opening formed in the insulating film, the data signal lines and the image data generating chip are connected to each other via a second opening formed in the insulating film, the electrodes of the semiconductor active element for driving pixels and the transparent pixel electrodes are connected to each other via a third opening formed in the insulating film, a polycrystalline thin film, which is connected to the scan pulse generating chip, is inserted into the first opening, and a polycrystalline thin film, which is connected to the image data generating chip, is inserted into the second opening, and the polycrystalline thin film, which is connected to the transparent pixel electrodes, is inserted into the third opening, and the polycrystalline thin film is composed of indium tin oxide, which is made of mainly indium oxide and added tin oxide;
• the polycrystalline thin film in the first opening and the scan pulse generating chip are connected to each other by an anisotropic conductive film;
• the polycrystalline thin film in the second opening and the image data generating chip are connected to each other by an anisotropic conductive film;
• and
• materials forming portions above the scan lines in the first opening, portions above the image data lines in the second opening, and portions above the semiconductor active elements for driving pixels in the third opening, have a 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.

The 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;
• and
• a 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;
• and
• further comprising, in a plurality of the 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;
• and
• an 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;
• wherein material forming at least one portion connecting said scan lines with the means for generating scan pulses, at least one portion connecting the data signal lines with the means for generating image data, and at least one portion connecting electrodes composing the conductor active elements for driving pixels with the transparent pixel electrodes, have a 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;
• the scan lines, the data signal lines and the electrodes composing the semiconductor active element for driving a pixel have a 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;
• the 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, the electrodes of the semiconductor active element for driving pixels and the transparent pixel electrodes are connected to each other via a third 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, which is connected to the transparent pixel electrodes, is inserted into the third opening, and the polycrystalline thin film is composed of indium tin oxide, which is made of mainly indium oxide and added tin oxide;
• and
• wherein at least one of the scan lines and the data signal lines is formed of other than the material of the connecting portions thereof.

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;
• a scan pulse generating chip;
• an image data generating chip;
• a plurality of scan lines, which are arranged dispersedly on one substrate of the pair of substrates and are connected to the scan pulse generating chip;
• and
• a 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 image data generating chip;
• flexible printed cables respectively, which is connected to the scan pulse generating chip and the image data generating chip;
• and
• further comprising, in a plurality of the pixels surrounded by the plurality of the scan lines and the plurality of the data signal lines:
• a pair of electrodes including a pixel electrode and a counter electrode provide on one substrate, which generates an electric field in the liquid crystal layer;
• an insulating film which covers respective semiconductor active elements for driving the pixels connected to the scan lines, the data signal lines, and the pixel electrodes, respective scan lines, and respective data signal lines;
• and
• wherein the scan lines and the scan pulse generating chip are connected to each other via a first opening formed in the insulating film, the data signal lines and the image data generating chip are connected to each other via a second opening formed in the insulating film, a polycrystalline thin film, which is connected to the scan pulse generating chip, is inserted into the first opening, and a polycrystalline thin film, which is connected to the image data generating chip, 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;
• the polycrystalline thin film in the first opening and the scan pulse generating chip are connected to each other by an anisotropic conductive film,
• the polycrystalline thin film in the second opening and the image data generating chip are connected to each other by an aniostropic conductive film, and
• materials forming portions above the scan lines in the first opening, portions above the image data lines in the second opening, and portions above the semiconductor active elements for driving pixels in the third opening, have a 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.

The 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;
• and
• a 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;
• and
• further comprising, in a plurality of the pixels surrounded by the plurality of the scan lines and the plurality of the data signal lines:
• a pair of electrodes including a pixel electrode and a counter electrode;
• an insulating film which covers respective semiconductor active elements for driving the pixels connected to the scan lines, the data signal lines, and the pixel electrodes, respective scan lines, and respective data signal lines;
• and
• material 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, having a substantially similar composition which is an alloy of Cr consisting of Nb, Mo, Ta, and W;
• and
• wherein the 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;
• and
• wherein at least one of the scan lines and the data lines is formed at other than the connecting portions thereof of a material other than the material of the connection portions thereof.