Semiconductor device, display device and device fabricating method

Abstract

The invention provides a display device using a one-dimensional substrate making layout of a substrate unnecessary and realizing a further low cost. A display device of the invention comprises a first fiber 80 having a silicon layer or an oxide layer, on which an active element is formed, formed on the surface of it and a second fiber 81 forming a combined one-dimensional substrate together with the first fiber 80 by being combined with the first fiber 80 and having light emitting layers formed on a plurality of domains of it, wherein the first fiber 80 and the second fiber 81 are respectively drawn out from take-up jigs, are cut in necessary lengths and separated into plural fibers, and these plural first or second fibers 80 or 81 are mounted in parallel with each other on a fixing jig and in this state, at least one-side elements of active elements and passive elements are formed on the first or second fibers 80 or 81.

1 . A semiconductor device comprising: 
 a semiconductor layer formed on the surface of a quartz fiber; and    an active element formed on said semiconductor layer.    
   
   
       2 . A semiconductor device according to  claim 1 , wherein said semiconductor layer is a single crystal or polycrystal silicon layer.  
   
   
       3 . A semiconductor device according to  claim 1 , wherein wiring is formed on said quartz fiber.  
   
   
       4 . A semiconductor device according to  claim 3 , wherein a metal wire material is connected to said wiring.  
   
   
       5 . A semiconductor device according to  claim 1 , wherein said active element is a transistor.  
   
   
       6 . A semiconductor device according to  claim 5 , wherein said transistor is a MOS transistor and has an oxide film formed on said semiconductor layer and a gate electrode formed on said oxide film.  
   
   
       7 . A display device comprising: 
 a fiber made of a transparent insulating material;    an electrode film formed on said fiber; and    a light emitting layer formed on said fiber.    
   
   
       8 . A display device according to  claim 7 , wherein said fiber is formed out of one of quartz and plastic.  
   
   
       9 . A display device according to  claim 7 , wherein said electrode film is a transparent electrode film.  
   
   
       10 . A display device according to  claim 9 , wherein said transparent electrode film is formed between said light emitting layer and said fiber.  
   
   
       11 . A display device according to  claim 7 , wherein said transparent electrode film is formed on the opposite face of said organic light emitting layer to said fiber side.  
   
   
       12 . A display device according to  claim 7 , wherein said electrode film is connected to the opposite face of said light emitting layer to the light output direction.  
   
   
       13 . A display device according to  claim 7 , wherein said light emitting layer is an organic electroluminescence layer.  
   
   
       14 . A display device according to  claim 7 , wherein said light emitting layer is formed in a plurality of domains.  
   
   
       15 . A display device according to  claim 7 , wherein a plurality of said fibers are arranged in parallel adjacently to each other.  
   
   
       16 . A display device including: 
 a first fiber on which an active element is formed; and,    a second fiber which forms a combined one-dimensional substrate together with said first fiber by being combined with said first fiber and light emitting layers are formed on a plurality of domains thereof.    
   
   
       17 . A display device according to  claim 16 , wherein a plurality of said combined one-dimensional substrates form a display screen by being arranged in parallel with each other.  
   
   
       18 . A display device according to  claim 16 , which comprises: a first protective film formed out of a transparent material at the light outputting side of said display screen; and 
 a second protective film formed out of a light shielding material at the opposite side to the light outputting side of said display screen.    
   
   
       19 . A display device according to  claim 16 , wherein a first signal line conductor being formed in the longitudinal direction and introducing an external image signal into said active element, and a current source linear conductor being formed in the longitudinal direction and supplying said light emitting layer with current are formed on said first fiber.  
   
   
       20 . A display device according to  claim 16 , wherein a current source is connected to an end of said current source linear conductor.  
   
   
       21 . A display device according to  claim 16 , which further comprising: 
 a conductive pad being formed on said first fiber and connected to said active element; and    a second signal line conductor being disposed in a direction crossing the longitudinal direction of said first fiber and connected to a conductive pad.    
   
   
       22 . A display device according to  claim 21 , wherein a driving circuit is connected to ends of said first signal line conductor and said second signal line conductor.  
   
   
       23 . A display device according to  claim 22 , which includes a common electrode consisting of a transparent conductor formed on the light outputting side of said light emitting layer.  
   
   
       24 . A display device according to  claim 7 , wherein light emitting element fibers having light emitting elements formed thereon are arranged into the shape of a flat surface or a curved surface in the longitudinal direction of a one-dimensional base material composed of said fiber or a one-dimensional substrate having electrodes formed on said one-dimensional base material, and a driving circuit is set in the vicinity of each of said light emitting elements.  
   
   
       25 . A display device according to  claim 24 , wherein said driving circuit is formed out of said one-dimensional base material or a one-dimensional substrate obtained by forming a semiconductor on said one-dimensional base material and is connected to said light emitting element fiber corresponding to said driving circuit.  
   
   
       26 . A display device according to  claim 25 , wherein the shape of a section of said one-dimensional substrate is a rectangle or a polygon.  
   
   
       27 . A display device according to  claim 25 , wherein the maximum projected area of said light emitting element fiber is equal to or larger than the maximum projected area of said one-dimensional substrate.  
   
   
       28 . A display device according to  claim 24 , wherein said light emitting element fibers having said light emitting elements formed thereon are arranged into the shape of a flat surface or a curved surface in the longitudinal direction of said one-dimensional base material or a one-dimensional TCO substrate having transparent electrodes formed on said one-dimensional base material, and said driving circuit of each of said light emitting elements is formed using said one-dimensional substrate.  
   
   
       29 . A device fabricating method comprising the steps of; 
 drawing out a fiber having a semiconductor layer or an insulating layer formed on the surface of it and further being covered with a protective film from a take-up jig;    removing said protective film drawn out from said take-up jig;    cutting and separating a portion, from which said protective film has been removed, of said fiber in necessary lengths and into plural fibers;    fixing said plural fibers on the outer surface or inner surface of an annular face; and    forming at least one-side elements of active elements and passive elements on said fibers on said annular face.    
   
   
       30 . A device fabricating method according to  claim 29 , wherein said annular face is one of the surface of a cylinder or a polygonal prism or the inner surface of a tube.  
   
   
       31 . A device fabricating method according to  claim 29 , which comprises a step of disposing a process head over said fiber on said annular face, turning said annular face and successively growing films one-dimensionally on said fibers.  
   
   
       32 . A device fabricating method according to  claim 29 , which comprises a step in which said fiber is placed in a film forming atmosphere in a state where it is fixed on said annular face.  
   
   
       33 . A device fabricating method according to  claim 29 , which comprises a step of disposing a process head over said fiber, turning said annular face and successively applying resist to said fibers.  
   
   
       34 . A device fabricating method according to  claim 33 , which comprises a step of disposing a lens system of an exposure apparatus over said fiber, turning said annular face and successively exposing resist on said fibers.  
   
   
       35 . A device fabricating method according to  claim 29 , which comprises a step in which said fibers are immersed in a solution together with said annular face and are wet-processed.  
   
   
       36 . A device fabricating method comprising the steps of: 
 drawing out a fiber having a semiconductor layer or an insulating layer formed on the surface of it and further being covered with a protective film from a take-up jig;    removing said protective film drawn out from said take-up jig;    cutting and separating a portion, from which said protective film has been removed, of said fiber in necessary lengths and into plural fibers;    mounting said plural fibers on a fixing jig at some intervals; and    forming at least one-side elements of active elements and passive elements on said fibers fixed on said fixing jig.