Passive matrix display device
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorsKiyoshi Kato, Tadafumi Ozaki, Kohei Mutaguchi
Life of this patent
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Abstract
In a semiconductor device with a reflective passive matrix liquid crystal display mounted thereto, the area for mounting a logic circuit is reduced, the product is reduced in size, and further the reliability is improved. A semiconductor device with a reflective passive matrix liquid crystal display mounted thereto is reduced in size by forming all or some of externally-mounted logic circuits in a region overlapping a pixel region on a substrate where a reflective electrode is formed. The present invention can also reduce the number of IC chips and the like mounted to a substrate greatly and the reliability in mounting IC chips and the like to a substrate can be improved.
Claims58
A passive matrix display device, comprising:
- a plurality of transistors formed on a first substrate that has an insulating surface;
- a first electrode formed on the transistors;
- a second electrode formed so as to cross the first electrode;
- and
- a second substrate facing the first substrate and having an insulating surface,
- wherein the plural transistors constitute a signal line driving circuit, a scanning line driving circuit, and a logic circuit.
A passive matrix display device, comprising:
- a plurality of transistors formed on a first substrate that has an insulating surface;
- a first electrode formed on the transistors;
- a second electrode formed so as to cross the first electrode;
- and
- a second substrate facing the first substrate and having an insulating surface,
- wherein the plural transistors constitute a signal line driving circuit, a scanning line driving circuit, and a logic circuit,
- wherein the first electrode is connected to the signal line driving circuit or the scanning line driving circuit through an opening formed in the insulating film.
A passive matrix display device, comprising:
- a plurality of transistors formed on a first substrate that has an insulating surface;
- a first electrode formed on the transistors;
- a second electrode formed so as to cross the first electrode;
- and
- a second substrate facing the first substrate and having an insulating surface,
- wherein the plural transistors constitute a signal line driving circuit, a scanning line driving circuit, and a logic circuit, and
- wherein the second electrode is connected to the signal line driving circuit or the scanning line driving circuit through an FPC or a wire.
A passive matrix display device, comprising:
- a first substrate having an insulating surface;
- a second substrate facing the first substrate and having an insulating surface;
- a signal line driving circuit, a scanning line driving circuit, and a first electrode that are formed on the first substrate, the driving circuits having a plurality of TFTs;
- and
- a logic circuit and a second electrode that are formed on the second substrate.
A passive matrix display device comprising:
- a first substrate having an insulating surface;
- an electronic circuit comprising a plurality of thin film transistors formed over said first substrate;
- an interlayer insulating film formed over said electronic circuit;
- a plurality of first conductive lines formed over said interlayer insulating film and extending in parallel in a first direction;
- a plurality of second conductive lines formed over a second substrate and extending in parallel wherein said first substrate is opposed to said second substrate in such a manner that said plurality first conductive lines and said plurality of second conductive lines are in an orthogonal relation to define a plurality of pixels.
Dependencies are inferred from the claim text.