Display Device and Method for Fabricating the Same

Abstract

An inexpensive display device, as well as an electrical apparatus employing the same, can be provided. In the display device in which a pixel section and a driver circuit are included on one and the same insulating surface, the driver circuit includes a decoder 100 and a buffer section 101. The decoder 100 includes a plurality of NAND circuits each including p-channel TFTs 104 to 106 connected to each other in parallel and other p-channel TFTs 107 to 109 connected to each other in series. The buffer section 101 includes a plurality of buffers each including three p-channel TFTs 114 to 116.

What is claimed is: 
     
         1 . (canceled) 
     
     
         2 . A light-emitting device comprising:
 a plastic substrate;   a first adhesive over the plastic substrate;   an insulating film comprising silicon and nitrogen;   a cathode of an EL element over the insulating film; and   a second adhesive over the cathode of the EL element.   
     
     
         3 . The light-emitting device according to  claim 2 , further comprising a pixel,
 wherein the pixel comprises a first transistor and a second transistor and the EL element,   wherein one of a source and a drain of the first transistor is electrically connected to the EL element,   wherein the other of the source and the drain of the first transistor is electrically connected to a current supply line,   wherein one of a source and a drain of the second transistor is electrically connected to a gate of the first transistor,   wherein a gate of the second transistor is electrically connected to a gate wiring, and   wherein the current supply line is parallel to the gate wiring.   
     
     
         4 . The light-emitting device according to  claim 3 ,
 wherein the other of the source and the drain of the second transistor is electrically connected to a source wiring.   
     
     
         5 . The light-emitting device according to  claim 2 , further comprising a first pixel and a second pixel,
 wherein the first pixel comprises a first transistor and the EL element,   wherein the second pixel comprises a second transistor,   wherein one of a source and a drain of the first transistor is electrically connected to the EL element,   wherein the other of the source and the drain of the first transistor is directly connected to a current supply line, and   wherein one of a source and a drain of the second transistor is directly connected to the current supply line.   
     
     
         6 . The light-emitting device according to  claim 2 , further comprising a pixel,
 wherein the pixel comprises a first transistor and a second transistor and the EL element,   wherein one of a source and a drain of the first transistor is electrically connected to the EL element,   wherein the other of the source and the drain of the first transistor is electrically connected to one of a source and a drain of the second transistor, and   wherein the other of the source and the drain of the second transistor is electrically connected to a current supply line.   
     
     
         7 . The light-emitting device according to  claim 6 ,
 wherein the other of the source and the drain of the second transistor is directly connected to the current supply line.   
     
     
         8 . A light-emitting device comprising:
 a plastic substrate;   a first adhesive over the plastic substrate;   an insulating film comprising silicon and nitrogen;   a cathode of an EL element over the insulating film;   a second adhesive over the cathode of the EL element; and   a cover member over the second adhesive.   
     
     
         9 . The light-emitting device according to  claim 8 , further comprising a pixel,
 wherein the pixel comprises a first transistor and a second transistor and the EL element,   wherein one of a source and a drain of the first transistor is electrically connected to the EL element,   wherein the other of the source and the drain of the first transistor is electrically connected to a current supply line,   wherein one of a source and a drain of the second transistor is electrically connected to a gate of the first transistor,   wherein a gate of the second transistor is electrically connected to a gate wiring, and   wherein the current supply line is parallel to the gate wiring.   
     
     
         10 . The light-emitting device according to  claim 9 ,
 wherein the other of the source and the drain of the second transistor is electrically connected to a source wiring.   
     
     
         11 . The light-emitting device according to  claim 8 , further comprising a first pixel and a second pixel,
 wherein the first pixel comprises a first transistor and the EL element,   wherein the second pixel comprises a second transistor,   wherein one of a source and a drain of the first transistor is electrically connected to the EL element,   wherein the other of the source and the drain of the first transistor is directly connected to a current supply line, and   wherein one of a source and a drain of the second transistor is directly connected to the current supply line.   
     
     
         12 . The light-emitting device according to  claim 8 , further comprising a pixel,
 wherein the pixel comprises a first transistor and a second transistor and the EL element,   wherein one of a source and a drain of the first transistor is electrically connected to the EL element,   wherein the other of the source and the drain of the first transistor is electrically connected to one of a source and a drain of the second transistor, and   wherein the other of the source and the drain of the second transistor is electrically connected to a current supply line.   
     
     
         13 . The light-emitting device according to  claim 12 ,
 wherein the other of the source and the drain of the second transistor is directly connected to the current supply line.   
     
     
         14 . A light-emitting device comprising:
 a substrate;   a first adhesive over the substrate;   an insulating film comprising silicon and nitrogen;   a cathode of an EL element over the insulating film;   a second adhesive over the cathode of the EL element; and   a cover member over the second adhesive,   wherein each of the substrate and the cover member is a PET film.   
     
     
         15 . The light-emitting device according to  claim 14 , further comprising a pixel,
 wherein the pixel comprises a first transistor and a second transistor and the EL element,   wherein one of a source and a drain of the first transistor is electrically connected to the EL element,   wherein the other of the source and the drain of the first transistor is electrically connected to a current supply line,   wherein one of a source and a drain of the second transistor is electrically connected to a gate of the first transistor,   wherein a gate of the second transistor is electrically connected to a gate wiring, and   wherein the current supply line is parallel to the gate wiring.   
     
     
         16 . The light-emitting device according to  claim 15 ,
 wherein the other of the source and the drain of the second transistor is electrically connected to a source wiring.   
     
     
         17 . The light-emitting device according to  claim 14 , further comprising a first pixel and a second pixel,
 wherein the first pixel comprises a first transistor and the EL element,   wherein the second pixel comprises a second transistor,   wherein one of a source and a drain of the first transistor is electrically connected to the EL element,   wherein the other of the source and the drain of the first transistor is directly connected to a current supply line, and   wherein one of a source and a drain of the second transistor is directly connected to the current supply line.   
     
     
         18 . The light-emitting device according to  claim 14 , further comprising a pixel,
 wherein the pixel comprises a first transistor and a second transistor and the EL element,   wherein one of a source and a drain of the first transistor is electrically connected to the EL element,   wherein the other of the source and the drain of the first transistor is electrically connected to one of a source and a drain of the second transistor, and   wherein the other of the source and the drain of the second transistor is electrically connected to a current supply line.   
     
     
         19 . The light-emitting device according to  claim 18 ,
 wherein the other of the source and the drain of the second transistor is directly connected to the current supply line.