Stacked structure and organic thin film transistor and array having the same

Abstract

A stacked structure including a soluble organic semiconductor material and a water soluble photosensitive material is provided. The water soluble photosensitive material is directly disposed on the surface of the soluble organic semiconductor material.

1 . A stacked structure, comprising:
 a soluble organic semiconductor material; and   a water soluble photosensitive material, directly disposed on a surface of the soluble organic semiconductor material.   
     
     
         2 . The stacked structure as claimed in  claim 1 , wherein the soluble organic semiconductor material comprises a soluble polymer semiconductor material or a soluble small molecular semiconductor material. 
     
     
         3 . The stacked structure as claimed in  claim 2 , wherein the soluble polymer semiconductor material is one selected from a group consisting of polythiophene, polyhexylthiophene, poly(3-hexylthiophene), poly(p-phenylene vinylene), poly(dioctylfluorene-co-benzothiadiazole), polyacetylene, polyprrole, polyailine and a combination thereof, or derivatives thereof. 
     
     
         4 . The stacked structure as claimed in  claim 2 , wherein the soluble small molecular semiconductor material comprises a pentacene derivative expressed by one of following chemical formulae: 
       
         
           
           
               
               
           
         
         
           
           
               
               
           
         
       
     
     
         5 . The stacked structure as claimed in  claim 1 , wherein the water soluble photosensitive material comprises dichromated polyvinyl alcohol (DCPVA) or a waterborne photoresist. 
     
     
         6 . The stacked structure as claimed in  claim 1 , wherein the soluble organic semiconductor material and the water soluble photosensitive material have a same pattern. 
     
     
         7 . An organic thin film transistor (OTFT), comprising:
 a gate;   a gate insulating layer, covering the gate;   a source and a drain, disposed on the gate insulating layer;   an active layer, located above the gate insulating layer and disposed between the source and the drain, wherein the active layer comprises a soluble organic semiconductor material; and   a protective layer, directly disposed on a surface of the active layer, wherein the protective layer comprises a water soluble photosensitive material.   
     
     
         8 . The OTFT as claimed in  claim 7 , wherein the active layer is located above the source and the drain. 
     
     
         9 . The OTFT as claimed in  claim 7 , wherein the source and the drain are located above the active layer. 
     
     
         10 . The OTFT as claimed in  claim 7 , wherein the soluble organic semiconductor material comprises a soluble polymer semiconductor material or a soluble small molecular semiconductor material. 
     
     
         11 . The OTFT as claimed in  claim 10 , wherein the soluble polymer semiconductor material is one selected from a group consisting of polythiophene, polyhexylthiophene, poly(3-hexylthiophene), poly(p-phenylene vinylene), poly(dioctylfluorene-co-benzothiadiazole), polyacetylene, polyprrole, and polyailine and a combination thereof, or derivatives thereof. 
     
     
         12 . The OTFT as claimed in  claim 10 , wherein the soluble small molecular semiconductor material comprises a pentacene derivative expressed by one of following chemical formulae: 
       
         
           
           
               
               
           
         
         
           
           
               
               
           
         
       
     
     
         13 . The OTFT as claimed in  claim 7 , wherein the water soluble photosensitive material comprises DCPVA or a waterborne photoresist. 
     
     
         14 . An OTFT array, comprising:
 a plurality of scan lines and a plurality of data lines;   a plurality of OTFTs, electrically connected to the scan lines and the data lines, wherein each of the OTFTs comprises:
 a gate; 
 a gate insulating layer, covering the gate; 
 a source and a drain, disposed on the gate insulating layer; 
 an active layer, located above the gate insulating layer and disposed between the source and the drain, wherein the active layer comprises a soluble organic semiconductor material; and 
 a protective layer, disposed on a surface of the active layer, wherein the protective layer comprises a water soluble photosensitive material. 
   
     
     
         15 . The OTFT array as claimed in  claim 14 , wherein the active layer of each OTFT is located above the source and the drain. 
     
     
         16 . The OTFT array as claimed in  claim 14 , wherein the source and the drain of each OTFT are located above the active layer. 
     
     
         17 . The OTFT array as claimed in  claim 14 , wherein the soluble organic semiconductor material comprises a soluble polymer semiconductor material or a soluble small molecular semiconductor material. 
     
     
         18 . The OTFT array as claimed in  claim 17 , wherein the soluble polymer semiconductor material is one selected from a group consisting of polythiophene, polyhexylthiophene, poly(3-hexylthiophene), poly(p-phenylene vinylene), poly(dioctylfluorene-co-benzothiadiazole), polyacetylene, polyprrole, and polyailine and a combination thereof, or derivatives thereof. 
     
     
         19 . The OTFT array as claimed in  claim 17 , wherein the soluble small molecular semiconductor material comprises a pentacene derivative expressed by one of following chemical formulae: 
       
         
           
           
               
               
           
         
         
           
           
               
               
           
         
       
     
     
         20 . The OTFT array as claimed in  claim 14 , wherein the water soluble photosensitive material comprises DCPVA or a waterborne photoresist.