Liquid crystal display device having driving circuit forming on a heat-resistant sub-substrate

A liquid-crystal display device having a driving circuit, comprising:

• a first substrate on which a plurality of first electrodes are arrayed in a stripe-like manner, said first substrate having substantially no heat resistance property;
• a plurality of first terminals electrically connected with said plurality of first electrodes on the first substrate and extending to a periphery of said first substrate in order to supply driving signals to the first electrodes;
• a second substrate having substantially no heat resistance property and separated from said first substrate with a predetermined gap therebetween, said second substrate having a plurality of second electrodes which are arranged in a stripe-like manner in a direction approximately orthogonal to said first electrodes;
• a plurality of second terminals arranged on a peripheral portion of said second substrate, and electrically connected with said plurality of second electrodes in order to supply driving signals to the second electrodes;
• sealing means for enclosing a region containing said plurality of first electrodes which oppose said second electrodes, inside the first terminals on said first substrate and also inside the second terminals on said second substrate, and for bonding said first substrate with said second substrate;
• a liquid crystal material sealed in the region enclosed by said first substrate, second substrate, and sealing means;
• a heat-resistant sub-substrate having a smaller area than that of said first substrate and connected to the periphery of said first substrate;
• a driving circuit block having
• driving circuit means for generating the driving signals to be supplied to at least one of said first and second electrodes according to an input display control signal, said driving circuit means formed on said sub-substrate and including a plurality of input terminals for receiving the display control signal supplied from the outside and a plurality of thin-film transistors connected with said input terminals, said transistors comprised of a semiconductor having a crystal structure and
• output terminals for outputting the driving signals;
• and
• connecting means for electrically connecting the output terminals of said driving circuit block with at least one of said first and second terminals formed on said first and second substrates.

A liquid-crystal display device having a driving circuit, comprising:

• a first substrate on which a plurality of first electrodes are arrayed, said first substrate having substantially no heat resistance property;
• active elements arranged on said first substrate, and connected to said first electrodes respectively;
• a plurality of signal supplying lines electrically connected with said active elements on said first substrate and extending to a periphery of said first substrate, said signal supplying lines having terminal portions formed on at least one end thereof in order to supply driving signals to said first electrodes;
• a second substrate having substantially no heat resistance property and separated from said first substrate with a predetermined gap therebetween, said second substrate having at least one second electrode arranged to oppose the first electrodes;
• sealing means for enclosing a region containing said plurality of first electrodes inside the terminal portions of said first substrate, and for bonding said first substrate with said second substrate;
• a liquid crystal material sealed in the region enclosed by said first substrate, second substrate, and sealing means;
• a heat-resistant sub-substrate having a smaller area than that of said first substrate and connected to the periphery of said first substrate;
• a driving circuit block having:
• driving circuit means for generating the driving signals to be supplied to at least said first electrode according to an input display control signal, said driving circuit means formed on said sub-substrate and including a plurality of input terminals for receiving the display control signal supplied from the outside and a plurality of thin-film transistors connected with said input terminals, said transistors comprised of a semiconductor having a crystal structure and,
• output terminals for outputting the driving signals;
• and
• connecting means for electrically connecting each output terminal of said driving circuit block with each terminal portion of said signal supplying lines formed on said first substrate.