A liquid crystal display device having display and driver sections on a single board

Claim 2

A liquid crystal display device comprising: a first board having a reference voltage electrode on one surface; a second board having, on a main surface, a lattice of conductive stripes, a plurality of pairs of a transistor and a picture element electrode, each pair being disposed at each crossing point of said conductive stripes and said transistors being thin film transistors using polycrystalline or amorphous semiconductor, and a driving circuit for driving said conductive stripes, said driving circuit being formed in a monocrystalline semiconductor as a form of semiconductor integrated circuit; and a liquid crystal interposed between said one surface of said first board and said main surface of said second board.

Claim 3

A liquid crystal display device as claimed in claim 1, wherein said thin film transistors are field effect transistors using polycrystalline silicon or amorphous silicon as their channel regions and said driving circuit is formed in at least one MOS integrated circuit using monocrystalline silicon.

Claim 4

A liquid crystal display device as claimed in claim 2, wherein said conductive stripes are composed of parallely disposed scan electrode stripes and parallely disposed data electrode stripes, said scan electrodes and said data electrodes being arranged so as to cross orthogonally to form said lattice and being formed of conductive layers attached on said second board, and said conductive layers being connected to said MOS integrated circuit of said driving circuit on said second board.

Claim 5

A liquid crystal display device as claimed claim 3, wherein said first and second board are made of transparent materials.

Claim 6

A liquid crystal display device comprising: a first board made of a transparent material and having one surface; a common electrode formed on said one surface of said first board, said common electrode made of a transparent conductor; a second board made of a transparent insulating material and having a main surface; a silicon oxide layer formed on said main surface of said second board; a plurality of parallely disposed scan electrode stripes formed on said silicon oxide film; a plurality of parallely disposed data electrode stripes formed on said silicon oxide film, said scan electrode stripes and said data electrode stripes being arranged orthogonally and made of conductive layers physically attached on said silicon oxide layer; a plurality of thin film transistors of insulated gate field effect transistor, each of said thin film transistors being disposed on said silicon oxide film at every crossing points of said scan and data electrode stripes, said thin film transistor being formed with use of polycrystalline silicon and each of said thin film transistor having a source electrode connected to adjacent one of said scan electrode stripe, a gate electrode connected to adjacent one of said data electrode stripe and a drain electrode; a plurality of picture element electrodes made of a transparent conductor, each of said picture element electrodes being disposed on said silicon oxide film adjacent to every thin film transistors, said picture element electrodes being connected to adjacent one of said drain electrodes; first and second monocrystalline silicon layers formed on said main surface of said second board, said first monocrystalline silicon layer forming a first driver circuit driving said scan electrode stripes, said first driver circuit being formed in a form of a semi­conductor integrated circuit directly connected to said scan electrode stripes, said second monocrystalline silicon layer forming a second driver circuit driving said data electrode stripes, said second driver circuit being formed in a form of a semiconductor integrated circuit directly connected to said data electrode stripes; and a liquid crystal interposed between said one surface of said first board and said main surface of said second board.

Claim 7

A liquid crystal display device comprising: a first board made of a transparent material and having one surface; a common electrode formed on said one surface of said first board, said common electrode made of a transparent conductor; a second board made of a transparent insulating material and having a main surface; a silicon oxide layer formed on said main surface of said second board; a plurality of parallely disposed scan electrode stripes formed on said silicon oxide film; a plurality of parallely disposed data electrode stripes formed on said silicon oxide film, said scan electrode stripes and said data electrode stripes being arranged orthogonally and made of conductive layers physically attached on said silicon oxide layer; a plurality of thin film transistors of insulated gate field effect transistor, each of said thin film transistors being disposed on said silicon oxide film at every crossing points of said scan and data electrode stripes, said thin film transistor being formed with use of polycrystalline silicon and each of said thin film transistor having a source electrode connected to adjacent one of said scan electrode stripe, a gate electrode connected to adjacent one of said data electrode stripe and a drain electrode; a plurality of picture element electrodes made of a transparent conductor, each of said picture element electrodes being disposed on said silicon oxide film adjacent to every thin film transistors, said picture element electrodes being connected to adjacent one of said drain electrodes; first and second monocrystalline silicon layers formed on said main surface of said second board, said first monocrystalline silicon layer forming a first driver circuit driving said scan electrode stripes, said first driver circuit being formed in a form of a semi­conductor integrated circuit directly connected to said scan electrode stripes, said second monocrystalline silicon layer forming a second driver circuit driving said data electrode stripes, said second driver circuit being formed in a form of a semiconductor integrated circuit directly connected to said data electrode stripes; and a liquid crystal interposed between said one surface of said first board and said main surface of said second board.

Claim 8

A liquid crystal display device as claimed in claim 5, wherein said first and second driver circuits are formed in a form of MOS integrated circuit.

Claim 9

A liquid crystal display device as claimed in claim 6, said liquid crystal display device further comprising a color filter formed on the other surface of said first board opposite to said one surface.