Method for forming color filter, method for forming light emitting element layer, method for manufacturing color display device comprising them, or color display device

Abstract

After a gate line ( 11 ), a TFT ( 1 ), and a data line ( 30 ) are formed, a riblike protective insulation layer ( 32 ) which coats the data line is formed on a substrate ( 10 ) serving as the element substrate of an active matrix type color liquid crystal display device or an organic EL display device. A color filter layer ( 42 ) on a transfer film ( 40 ) is press-bonded on this substrate ( 10 ) with a roller ( 46 ) moving in the extensional direction (columnar direction) of the protecting insulation layer ( 32 ). The advancement of the transfer of a color filter in the columnar direction makes it possible to bring the substrate and the color filter in contact without gaps while expelling the gas out of a pixel space in the advancement direction. During the step of forming a color filter, the protecting insulation layer ( 32 ) protects the data line ( 30 ) from the treatment liquid etc. An organic light emitting element layer is arranged in the pixel space to form an organic EL display device.

1 . A color filter formation method for transferring a color filter layer provided on a transfer film to a transferred substrate, wherein 
 said transferred substrate includes a plurality of wirings arranged side by side to extend in a predetermined direction, and a protective insulating layer covering the wirings and formed as a rib protruding from said substrate, and    said color filter layer on said transfer film is affixed onto said transferred substrate through pressure applied by a pressing mechanism, and the pressing mechanism is moved in a direction in which said protective insulating layer extends, thereby transferring said color filter layer onto said transferred substrate.    
     
     
         2 . A color filter formation method for discharging a liquid color filter material to a transferred substrate, wherein 
 said transferred substrate includes a plurality of wirings arranged side by side to extend in a predetermined direction, and a protective insulating layer covering the wirings and formed as a rib protruding from said substrate, and    said liquid color filter material is discharged from a discharging mechanism, and the discharging mechanism is relatively moved in a direction in which said protective insulating layer extends, thereby forming a color filter layer on said transferred substrate.    
     
     
         3 . An emissive element layer formation method for transferring an emissive element layer provided on a transfer film to a transferred substrate, wherein 
 said transferred substrate includes a plurality of wirings arranged side by side to extend in a predetermined direction, and a protective insulating layer covering the wirings and formed as a rib protruding from said substrate, and    an emissive layer on said transfer film is affixed onto said transferred substrate through pressure applied by a pressing mechanism, and the pressing mechanism is moved in a direction in which said protective insulating layer extends, thereby transferring said emissive element layer onto said transferred substrate.    
     
     
         4 . An emissive element layer formation method for discharging a liquid emissive element material to a transferred substrate, wherein 
 said transferred substrate includes a plurality of wirings arranged side by side to extend in a predetermined direction, and a protective insulating layer covering the wirings and formed as a rib protruding from said substrate, and    said liquid emissive element material is discharged from a discharging mechanism, and the discharging mechanism is relatively moved in a direction in which said protective insulating layer extends, thereby forming said emissive element layer on said transferred substrate.    
     
     
         5 . A method of manufacturing a color display device comprising, on a substrate, a plurality of switching elements, a data line for supplying a data signal to a corresponding switching element among said plurality of switching elements, a selection line for supplying a selection signal to said corresponding switching element, a pixel electrode directly or indirectly connected to said corresponding switching element, and a color filter formed under said pixel electrode, wherein 
 said selection line, said switching element, and said data line are formed on said substrate, and then a protective insulating layer is formed covering at least each said data line extending in a column direction and protruding from said substrate as a rib, and    a color filter layer on a transfer film is affixed onto said substrate through pressure applied by a pressing mechanism, and the pressing mechanism is moved in a direction in which said protective insulating layer extends, thereby transferring said color filter layer onto said substrate.    
     
     
         6 . A method of manufacturing a color display device according to  claim 5 , wherein, prior to transfer of said color filter, 
 a color filter block layer is formed near a region for forming a contact hole for electrically connecting layers of said pixel electrode and said switching element, and    a passage for expelling ambient gas in the column direction during transfer of the color filter is secured between the color filter block layer and said protective insulating layer.    
     
     
         7 . A method of manufacturing a color display device according to  claim 5  or  6 , wherein 
 said color display device is a color liquid crystal display device for controlling liquid crystal by a voltage corresponding to the data signal applied to said pixel electrode.  
 
     
     
         8 . The method of manufacturing a color display device according to  claim 5  or  6 , wherein 
 said color display device is a color electroluminescence display device comprising an electroluminescence element for each pixel, said pixel electrode is a first electrode of said electroluminescence element, and emissive intensity of said electroluminescence element is controlled in accordance with electric power corresponding to the data signal supplied to the first electrode.  
 
     
     
         9 . A method of manufacturing a color display device comprising a plurality of pixels on a substrate, each of said plurality of pixels including: 
 an emissive element including an emissive element layer between a first electrode and a second electrode,    a switching transistor connected to a data line and a selection line, and    an element driving transistor connected between a driving power source and said emissive element for controlling electric power supplied from the driving power source to said emissive element in accordance with a data signal supplied from a data line through said switching transistor, wherein 
 on said substrate, after said data line extending in a column direction is formed, a protective insulating layer is formed covering said data line and protruding from said substrate as a rib, and  
 the emissive element layer on a transfer film is affixed by means of a pressing mechanism onto said first electrode of said emissive element formed on said substrate in a region sandwiched by said protective insulating layers arranged side by side, and said pressing mechanism is moved in a direction in which said protective insulating layer extends, thereby transferring said emissive element layer onto said first electrode.  
   
     
     
         10 . A method of manufacturing a color display device comprising a plurality of pixels on a substrate, each of said plurality of pixels including: 
 an emissive element including an emissive element layer between a first electrode and a second electrode,    a switching transistor connected to a data line and a selection line, and    an element driving transistor connected between a driving power source and said emissive element for controlling electric power supplied from the driving power source to said emissive element in accordance with a data signal supplied from a data line through said switching transistor, wherein 
 after said data line extending in a column direction is formed, a protective insulating layer is formed covering said data line and protruding from said substrate as a rib on said substrate, and  
 a liquid emissive element material is discharged from a discharging mechanism, and said discharging mechanism is moved in a direction in which said protective insulating layer extends, thereby forming said emissive element layer on said first electrode of said emissive element.  
   
     
     
         11 . A color display device, comprising, on a substrate: 
 a plurality of switching elements arranged in a matrix;    a plurality of data lines extending in a column direction for supplying a data signal to a corresponding switching element among said plurality of switching elements;    a plurality of selection lines extending in a row direction for supplying a selection signal to the corresponding switching element;    a pixel electrode disposed in a pixel region sectioned by said data line and said selection line for receiving directly or indirectly the data signal through said corresponding switching element; and    a protective insulating layer formed covering said data line, wherein 
 a color filter of a color assigned to each pixel is further formed in a pixel space provided so that said protective insulating layer acts as a side edge in the column direction.  
   
     
     
         12 . A color display device composed of liquid crystal sealed between first and second substrates disposed opposite to each other, comprising, on said first substrate: 
 a plurality of switching elements arranged in a matrix;    a plurality of data lines extending in a column direction for supplying a data signal to a corresponding switching element among said plurality of switching elements;    a plurality of selection lines extending in a row direction for supplying a selection signal to the corresponding switching element;    a pixel electrode disposed in a pixel region sectioned by said data line and said selection line for receiving the data signal through said corresponding switching element, and driving liquid crystal between said pixel electrode and an electrode on said second substrate provided opposite thereto; and    a protective insulating layer formed covering said data line, wherein 
 a color filter of a color assigned to each pixel is further formed in each pixel space provided so that said protective insulating layer acts as a side edge in the column direction.  
   
     
     
         13 . A color display device according to  claim 11  or  12 , further comprising a color filter block layer between a region for forming a contact hole electrically connecting layers of said pixel electrode and said switching element, and a pixel space provided so that said protective insulating layer acts as a side edge in the column direction.  
     
     
         14 . A color display device according to any one of claims  11 - 13 , wherein 
 said protective insulating layer has a thickness such that an upper surface thereof is positioned approximately as high as or higher than an upper surface of said color filter.    
     
     
         15 . A color display device according to any one of claims  11 - 14 , wherein 
 said color display device is a color liquid crystal display device for controlling liquid crystal by a voltage corresponding to the data signal applied to said pixel electrode.    
     
     
         16 . A color display device according to any one of claims  11 - 14 , wherein 
 said color display device is an electroluminescence display device comprising an electroluminescence element for each pixel, and    said pixel electrode is a first electrode of said electroluminescence element, and emissive intensity of said electroluminescence element is controlled in accordance with electric power corresponding to the data signal supplied to said first electrode.    
     
     
         17 . A color display device comprising a plurality of pixels on a substrate, each pixel including: 
 an emissive element including an emissive element layer between a first electrode and a second electrode;    a switching transistor connected to a data line and a selection line; and    an element driving transistor connected between a driving power source and said emissive element for controlling electric power supplied from the driving power source to said emissive element in accordance with a data signal supplied from the data line through said switching transistor, wherein 
 a protective insulating layer is formed at least covering said data line extending in a column direction; and  
 an emissive element layer capable of emitting light of a color assigned to a corresponding pixel among said plurality of pixels is formed in a pixel space provided so that said protective insulating layer acts as a side edge in the column direction.  
   
     
     
         18 . A color display device according to  claim 17 , wherein 
 said protective insulating layer has a thickness such that an upper surface thereof is positioned approximately as high as or lower than an upper surface of said emissive element layer.    
     
     
         19 . A color display device, wherein 
 a plurality of pixel regions are formed in a matrix on a substrate;    in each pixel region, at least a switching element connected to a data line and a selection line, and a pixel electrode receiving directly or indirectly a data signal through said switching element are disposed; and    a color filter of an assigned color is formed in a pixel space provided so that a rib-shaped insulating layer formed to extend on a boundary between adjoining pixel regions assigned colors different from each other acts as a sidewall in a column direction.    
     
     
         20 . A color display device comprising a plurality of pixels on a substrate, each pixel including: 
 an emissive element including an emissive element layer between a first electrode and a second electrode;    a switching transistor connected to a data line and a selection line; and    an element driving transistor connected between a driving power source and said emissive element for controlling electric power supplied from the driving power source to said emissive element in accordance with a data signal supplied from the data line through said switching transistor, wherein 
 an emissive element layer capable of emitting light of an assigned color is formed in each pixel space provided so that a rib-shaped insulating layer formed to extend on a boundary between adjoining pixel regions assigned colors different from each other acts as a sidewall in a column direction.