Patent Publication Number: US-2011052826-A1

Title: Application device and driving method thereof

Description:
BACKGROUND OF THE INVENTION 
     (1) Field of the Invention 
     The present invention relates to an application device and a driving method thereof. 
     (2) Description of the Related Art 
     Conventionally, there is known a nozzle printing method by which an electroluminescence (EL) material-containing liquid is applied to grooves by continuously pouring the EL material-containing liquid into the grooves through a nozzle, each of the grooves being located between partition walls which are formed to enclose a transparent electrode (anode) provided on a glass substrate, at an EL material-containing layer forming step of a manufacturing process of an EL element used for an EL panel. This application method is, for example, disclosed in Japanese Patent Application Laid-open Publication No. 2002-75640. 
     In this case, the EL material-containing layer is formed by drying the applied EL material-containing liquid, and The EL element is manufactured by disposing a counter electrode (cathode) on the formed EL material-containing layer. An application target region to which the EL material-containing liquid is applied is a light-emitting region of the EL panel. 
     However, in the case disclosed in the above-mentioned document, the nozzle which discharges the EL material-containing liquid is provided with a holding member which moves along a guiding member. Therefore, when the guiding member is distorted, a vibration occurs at the time of movement of the holding member. As a result, the nozzle may slip out of a position for the application target region provided in each of the grooves between the partition walls, for example. When the EL material-containing liquid is applied to the application target region from the nozzle whose position is not appropriate for the application target region, the EL material-containing liquid may be applied to the outside of the application target region, and/or the thickness of the applied EL material-containing liquid may become uneven. As a result, the EL material-containing layer may be poorly formed. These problems are caused not only by the nozzle printing method but also by an ink-jet method by which application is performed by intermittently discharging liquid drops. 
     SUMMARY OF THE INVENTION 
     The present invention has an advantageous effect of providing an application device and a driving method thereof, the application device which can appropriately apply a liquid to an application target region on a substrate, and which can prevent a liquid-applied film from being poorly formed. 
     To obtain the advantageous effect mentioned above, a first aspect of the present invention is an application device to apply a liquid on an application target region of a substrate, the application device comprising: at least one discharge section including a nozzle hole which discharges the liquid; a supporting table on which the substrate is disposed; a carrying section to move the discharge section relative to the supporting table in a first direction; a displacement amount detection section to detect a displacement amount of the discharge section in a second direction which crosses the first direction while the discharge section is moved relative to the supporting table in the first direction by the carrying section; a position adjustment section to move one of the discharge section and the supporting table relative to the other in the second direction; and a control section to control the position adjustment section so as to move the one of the discharge section and the supporting table in an offset direction which offsets the displacement amount while the discharge section is moved relative to the supporting table in the first direction by the carrying section. 
     To obtain the advantageous effect mentioned above, a second aspect of the present invention is a driving method of an application device to apply a liquid on an application target region of a substrate, the driving method comprising the steps of: disposing the substrate on a supporting table; moving at least one discharge section relative to the supporting table in a first direction, the discharge section including a nozzle hole which discharges the liquid; detecting a displacement amount of the discharge section in a second direction which crosses the first direction while moving the discharge section relative to the supporting table in the first direction; and moving one of the discharge section and the supporting table relative to the other in an offset direction which offsets the displacement amount while moving the discharge section relative to the supporting table in the first direction. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The present invention will be fully understood by its detailed description below and appended drawings. However, the detailed description and the drawings are given by way of explanation for the present invention only, and thus are not intended to limit the scope of the present invention, wherein 
         FIG. 1  is a schematic view showing an application device according to a first embodiment of the present invention; 
         FIGS. 2A and 2B  schematically show application operation performed by the application device according to the first embodiment of the present invention; 
         FIG. 3  is a sectional view showing a nozzle head of the application device according to the first embodiment of the present invention; 
         FIG. 4  is a sectional view showing a structure of a degassing section at a standby position of the application device according to the first embodiment of the present invention; 
         FIGS. 5A and 5B  show the nozzle head and a position adjustment section of the application device according to the first embodiment of the present invention; 
         FIG. 6  is an explanatory diagram showing operation of the position adjustment section of the application device according to the first embodiment of the present invention; 
         FIG. 7  is a diagram illustrating the operation of the position adjustment section of the application device according to the first embodiment of the present invention; 
         FIG. 8  is an explanatory diagram showing a pattern of application of a liquid, the application performed by moving the nozzle head of the application device according to the first embodiment of the present invention; 
         FIG. 9  is a schematic view showing the application device according to a second embodiment of the present invention; 
         FIG. 10A  is a diagram illustrating detection of a distortion of a bank by an image pickup section of the application device according to the second embodiment of the present invention; 
         FIGs. 10B to 10F  show different setting positions of the image pickup section of the application device according to the second embodiment of the present invention, respectively; 
         FIG. 11  is a plane view showing an arrangement of pixels of an EL panel; 
         FIG. 12  is a plane view showing a schematic structure of the EL panel; 
         FIG. 13  is a circuit diagram showing a circuit for one pixel of the EL panel; 
         FIG. 14  is a plane view showing one pixel of the EL panel; 
         FIG. 15  is a sectional view taken from the line XV-XV in  FIG. 14  and viewed along the arrows in  FIG. 14 ; 
         FIG. 16  is a sectional view showing a pixel electrode exposed between banks of the EL panel; 
         FIG. 17  is a frontal view showing an example of a cell phone which employs the EL panel as a display panel; 
         FIGS. 18A and 18B  are perspective views showing an example of a digital camera from the front and the back, respectively, the digital camera which employs the EL panel as a display panel; and 
         FIG. 19  is a perspective view showing an example of a personal computer which employs the EL panel as a display panel. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Hereinafter, preferred embodiments to implement the present invention are described referring to the drawings. Various limitations are attached to the following embodiments, the limitations which are technically preferred to implement the present invention. However, the following embodiments, to which the limitations are attached, and the drawings are not intended to limit the scope of the present invention. 
     An application device is used for forming, for example, an organic layer (a hole injection layer, a light-emitting layer, an electron injection layer, or the like) of an organic electroluminescence display panel which is a light-emitting panel; an organic layer of an organic transistor; an organic color developing layer (a color developing layer including an organic material for developing a color of red, green, or blue, a black matrix including an organic material, or the like) of a color filter of a liquid crystal display; an organic electrically-conductive layer (an electrically-conductive wire including an organic material, or the like) of each of various electronic devices; and other organic layers, or a functional layer including an inorganic material such as metal particles which are dispersed or dissolved in a liquid. 
     In each of the following embodiments, a case where the present invention is applied to an application device which uses the nozzle printing method is described. However, the present invention is not limited thereto. For example, the present invention can be appropriately applied to an application device which uses the ink-jet method by which application is performed by intermittently discharging liquid drops. 
     First Embodiment 
     (1) Structure of Application Device According to First Embodiment 
       FIG. 1  is a schematic view showing an application device according to a first embodiment of the present invention. 
     As shown in  FIG. 1 , an application device  100  includes the following elements a to j. 
     a. a liquid tank  108  to store a liquid  120 ; 
     b. a nozzle head (discharge section)  106  including a nozzle which discharges the liquid  120 ; 
     c. a supply pipe  107  which is laid from the liquid tank  108  to the nozzle head  106 ; 
     d. a supply device  116  to supply the liquid  120  stored in the liquid tank  108  to the nozzle head  106  through the supply pipe  107 ; 
     e. a worktable  101  as a supporting table of which a substrate  121 , a target of application of the liquid  120 , is disposed on the top surface; 
     f. a carriage  105  as a nozzle carrying section (carrying section) by which the nozzle head  106  is moved in a prescribed moving direction (first direction) relative to the substrate  121  disposed on the worktable  101 ; 
     g. a moving device  102  to move the worktable  101  in a direction (second direction) which crosses the moving direction of the nozzle head  106 ; 
     h. a displacement amount detection section  111  to detect the amount of displacement (which may be referred to as a displacement amount hereinafter) of the nozzle head  106  in the second direction, the displacement which occurs while the nozzle head  106  is moved in the first direction; 
     i. a position adjustment section  110  to adjust a position of the nozzle head  106  relative to the substrate  121  by moving the nozzle head  106  in the second direction; and 
     j. a control section  119  to control each section and the like of the application device  100 . 
     The moving direction (first direction) of the nozzle head  106  is referred to as a main-scanning direction. 
     As shown in  FIG. 1 , the worktable  101  is disposed on the moving device  102 , and the substrate  121  is disposed on the worktable  101 . 
     The moving device  102  moves the worktable  101  and the substrate  121  disposed thereon in a linear direction. The moving device  102  includes a rail to guide the worktable  101 , and a drive mechanism to drive the worktable  101  along the rail, for example. 
     The moving device  102  is controlled by the control section  119 . The control section  119  intermittently drives the moving device  102 , and the moving device  102  intermittently moves the worktable  101  and the substrate  121 . That is, the moving device  102  repeats a stop-start movement of the worktable  101  and the substrate  121  by the control of the control section  119 . 
     The moving direction of the worktable  101  is referred to as a sub-scanning direction. 
     Above the worktable  101 , a rail  103  as a guiding section of the carrying section is provided, the rail  103  being supported by a machine casing  104 . The rail  103  is disposed in a direction which is the orthogonal direction to the moving direction of the worktable  101  viewed from above. The rail  103  is equipped with the carriage  105 , and the carriage  105  is equipped with the nozzle head  106 . The carriage  105  and the nozzle head  106  are guided along the rail  103  so as to be movable along the rail  103 . 
     The carriage  105  reciprocates the nozzle head  106  in the main-scanning direction within a parallel plane to the top surface of the worktable  101 , the main-scanning direction which is the orthogonal direction to the moving direction of the worktable  101 . For example, the carriage  105  includes a built-in driving source such as a built-in motor, and the carriage  105  is driven by the built-in motor and moves along the rail  103 . 
     The carriage  105  is controlled by the control section  119 . The control section  119  drives the carriage  105  when the moving device  102  stops, which happens intermittently, and the carriage  105  moves while the moving device  102  stops. 
     Here, the outline of application operation performed by the application device according to the embodiment of the present invention is described.  FIGS. 2A and 2B  schematically show application operation performed by the application device  100  according to the first embodiment of the present invention. The X direction and the Y direction shown in  FIGS. 2A and 2B  are the first direction and the second direction mentioned above, respectively. 
     As shown in  FIG. 2A , the application device  100  applies the liquid  120  onto the substrate  121  by moving the nozzle head  106  in the X direction and the Y direction relative to the substrate  121  by the carriage  105  and the moving device  102  while discharging the liquid  120  from the nozzle of the nozzle head  106 . The application device  100  which performs the application operation shown in  FIG. 2A  includes only one nozzle head  106 , and the application operation is performed one line by one line thereby. However, the application device  100  is not limited to having only one nozzle head  106 , and may include two or more nozzle heads  106 . In such a case, the application is performed on a plurality of lines at the same time. The number of the lines corresponds to the number of the nozzle heads  106 . 
       FIG. 2B  schematically shows application operation performed by the application device  100  which includes two nozzle heads  106  and performs the application on two lines at the same time thereby. In this case, the two nozzle heads  106  are equipped with the carriage  105  such that the two nozzle heads  106  are disposed parallel to each other along the Y direction. The two nozzle heads  106  move at the same time. The application operation shown in  FIG. 2B  is the same as the application operation shown in  FIG. 2A , except that a moving amount of the substrate  121  in the Y direction, the substrate  121  moved by the moving device  102 , doubles as compared with the case shown in  FIG. 2A . 
     When a plurality of nozzle heads  106  is equipped with the carriage  105 , the supply pipe  107 , the liquid tank  108 , and a massflow controller  109  are provided with each of the plurality of nozzle heads  106 . 
     In the following, the case where the application device  100  includes one nozzle head  106  is described. 
       FIG. 3  is a sectional view showing a nozzle head of the application device according to the first embodiment of the present invention. 
     The nozzle head  106  is equipped with the carriage  105  such that the tip of the nozzle head  106  looks down. 
     As shown in  FIG. 3 , the supply pipe  107  is connected to an inlet  162  provided at the upper end of a near-cylindrical nozzle-head main body section  161  of the nozzle head  106 . A base  165  is provided at the lower end of the nozzle-head main body section  161 , and an opening  166  is formed at the center of the base  165 . 
     A space  163  where the liquid  120  is stored is formed in the nozzle-head main body section  161 . A nozzle plate  167  is provided under the space  163 , and the opening  166  is blockaded by the nozzle plate  167 . A microscopic nozzle hole (nozzle)  168  is formed at a position which is at the near-center of the nozzle plate  167  and corresponds to the opening  166 . The diameter of the nozzle hole  168  is 10 μm to 20 μm, for example. The liquid  120  is discharged from the nozzle hole  168 . 
     A filter  164  to remove particles in a liquid is provided at the near-middle in the nozzle-head main body section  161 . The space  163  is divided into two spaces, namely, an inlet  162 -side space and an opening  166 -side space, by the filter  164 . 
     A displacement amount detection section  111  is, for example, a force sensor, a gyroscope, or the like, which uses a piezoelectric element. The displacement amount detection section  111  detects a displacement amount of the nozzle head  106  in the sub-scanning direction (for example, a Y-axis direction or the second direction) which is the orthogonal direction to the main-scanning direction (for example, an X-axis direction or the first direction) while the nozzle head  106  moves along the rail  103  in the main-scanning direction. 
     The displacement amount detection section  111  is disposed on a side surface of the nozzle head  106 , for example. The displacement amount detection section  111  detects the amount of displacement of the nozzle head  106  in the sub-scanning direction, which is the orthogonal direction to the main-scanning direction, based on the displacement of the nozzle head  106 , when the nozzle head  106  moves along the rail  103  in the main-scanning direction, and slips in the sub-scanning direction. 
     It is desired that the nozzle head  106  move linearly along the rail  103 . However, when the rail  103  is distorted, for example, by having bumpiness, the carriage  105  may move with a squeak and/or a clatter depending on the distortion peculiar to the rail  103 . 
     The displacement amount detection section  111  is structured to detect the amount of displacement of the nozzle head  106  based on the displacement of the nozzle head  106 , the displacement which occurs following a vibration of the nozzle head  106  when the squeak and/or the clatter of the carriage  105  is conveyed to the nozzle head  106  and vibrates the nozzle head  106  accordingly. The displacement amount detection section  111  is controlled by the control section  119 . 
     The nozzle head  106  is equipped with the carriage  105  with the position adjustment section  110  in between. As shown in  FIG. 3 , the position adjustment section  110  includes, for example, a top surface section  110   a  which is fixed to the carriage  105 , a bottom surface section  110   c  on which the nozzle head  106  is set up, and a stretch section  110   b  which relatively moves the top surface section  110   a  and the bottom surface section  110   c  in the sub-scanning direction. 
     The position adjustment section  110  is, for example, a precision linear stage, a piezo stage, an electrostatic stage, or the like. When a prescribed driving signal is input, the stretch section  110   b  is stretched in a horizontal direction (Y-axis direction) which is the orthogonal direction to the main-scanning direction (X-axis direction). As a result, the position adjustment section  110  moves the nozzle head  106  provided with the bottom surface section  110   c  in the sub-scanning direction (Y-axis direction) which is the orthogonal direction to the main-scanning direction (X-axis direction). Then, the position adjustment section  110  adjusts a position of the nozzle head  106  relative to the substrate  121  by moving the nozzle head  106  in the sub-scanning direction while the nozzle head  106  is moved in the main-scanning direction by the carriage  105 . 
     The position adjustment section  110  moves the nozzle head  106  relative to the substrate  121  based on a displacement amount of the nozzle head  106 , the displacement amount which is detected by the displacement amount detection section  111 , in an offset direction which offsets the displacement amount of the nozzle head  106 . 
     The position adjustment section  110  is controlled by the control section  119 . 
     The supply pipe  107  is laid from the nozzle head  106  to the liquid tank  108 . One end of the supply pipe  107  is connected to the nozzle head  106 , and the other end of the supply pipe  107  is connected to the liquid tank  108 . 
     As the supply pipe  107 , a tube composed of a material having resistance properties to the liquid  120  stored in the liquid tank  108  is used. More specifically, the supply pipe  107  is a tube composed of, for example, silicone resin. The inside diameter of the supply pipe  107  is 1 mm to 7 mm. The supply pipe  107  may be equal or unequal in inside diameter for the whole length thereof which is laid from the nozzle head  106  to the liquid tank  108 . For example, the inside diameter of the supply pipe  107  may be larger (for example, about 7 mm) at a part which is closer to the liquid tank  108  of the supply pipe  107 , and be smaller (for example, about 1 mm) at a part which is closer to the nozzle head  106  of the supply pipe  107 . 
     The liquid  120  is stored in the liquid tank  108 . The liquid  120  is, for example, an organic liquid, an aqueous liquid, an emulsion liquid, or the like. The liquid  120  is appropriately selected depending on a use of the application device  100 . 
     The liquid tank  108  is provided with the supply device  116 . The supply device  116  supplies the liquid  120  stored in the liquid tank  108  to the nozzle head  106  through the supply pipe  107 . The supply device  116  preferably pumps the liquid  120  into the supply pipe  107  in a state where the pressure of the liquid  120  to be supplied to the nozzle head  106  is kept uniform. 
     The supply device  116  is, for example, a pump, or more specifically, a piston-type pressure pump or a gas-type pressure pump. The piston-type pressure pump pushes out the liquid  120  stored in the liquid tank  108  to the supply pipe  107  by a movable piston being pressed by a driving source such as a motor, an air cylinder, or a solenoid, the movable piston which is housed in the syringe-type liquid tank  108 . The gas-type pressure pump pushes out the liquid  120  stored in the liquid tank  108  to the supply pipe  107  by supplying a gas (mainly an inert gas such as a nitrogen gas) into the well-closed liquid tank  108  and applying pressure to the surface of the liquid  120  in the liquid tank  108 . A pump other than the piston-type pressure pump and the gas-type pressure pump may be used as the supply device  116 . 
     The supply device  116  is controlled by the control section  119 . The control section  119  drives the supply device  116  when the carriage  105  starts to move, and the supply device  116  performs the operation for supplying the liquid  120  while the carriage  105  moves. 
     The massflow controller  109  is provided at a halfway section of the supply pipe  107 . The massflow controller  109  measures and controls a flow rate of the liquid  120  which flows in the supply pipe  107 . The flow rate thereof measured by the massflow controller  109  is output to the control section  119 . 
     The control section  119  determines a value of the flow rate thereof which is set by the massflow controller  109 . (The value of the flow rate which is set is referred to as a set flow rate hereinafter.) The massflow controller  109  performs a constant flow control such that a value of the flow rate of the liquid  120  which flows in the supply pipe  107  is kept at the set flow rate. 
       FIG. 4  is a sectional view showing a structure of a degassing section at a standby position of the application device according to the first embodiment of the present invention. 
     The standby position of the nozzle head  106  is set in the vicinity of the worktable  101  and below the rail  103 . An airtight cap  150  is provided at the standby position as the degassing section. 
     As shown in  FIG. 4 , one end of a drainpipe  151  is connected to the airtight cap  150 . The nozzle hole  168  of the nozzle head  106  is led to the drainpipe  151  by the airtight cap  150  closely contacting with the lower end of the nozzle head  106 . The other end of the drainpipe  151  is connected to a cold trap  130 . 
     The cold trap  130  includes: an outer container  131 ; a refrigerant  133  disposed in the outer container  131 ; and an airtight container  132  housed in the outer container  131  such that the airtight container  132  is soaked in the refrigerant  133 . The other end of the drainpipe  151  passes through the top surface of the airtight container  132 . One end of a suction pipe  152  is connected to a vacuum pump (pressure reducing device)  140 , and the other end of the suction pipe  152  passes through the top surface of the airtight container  132 . In the airtight container  132 , the other end of the suction pipe  152  is disposed at a position higher than a position of the other end of the drainpipe  151 . 
     When the nozzle head  106  is in a standby state where the nozzle head  106  does not apply the liquid  120  to the substrate  121 , or when air bubbles left in the nozzle head  106  are removed, the nozzle head  106  is moved to the airtight cap  150  by the carriage  105  so as to be connected to the airtight cap  150 . 
     The liquid  120  in the liquid tank  108  can be pulled toward the nozzle head  106 , and the liquid  120  discharged from the nozzle head  106  can be caught by the cold trap  130 , by the vacuum pump  140  being operated to perform suction in a state where the airtight cap  150  and the lower end of the nozzle head  106  are in close contact with each other. Also, the air bubbles left in the nozzle head  106  can be sucked out and removed by the vacuum pump  140  performing suction. 
     Next, offset processing to offset a displacement amount of the nozzle head  106  relative to the substrate  121  is described. The offset processing is performed by moving the nozzle head  106  by the position adjustment section  110  in accordance with the displacement amount of the nozzle lead  106  in the sub-scanning direction, the displacement amount detected by the displacement amount detection section  111 . 
     It is preferable that the nozzle head  106  move linearly in the main-scanning direction along the rail  103 , and apply the liquid  120  by discharging the liquid  120  at the near-center of an application target region in the width direction thereof which is the orthogonal direction to the main-scanning direction, the application target region to which the liquid  120  is applied on the substrate  121 . However, the carriage  105  may move with a squeak and/or a clatter depending on a distortion peculiar to the rail  103 . Displacement of the nozzle head  106  in the sub-scanning direction may occur when the squeak and/or the clatter of the carriage  105  is conveyed to the nozzle head  106  and vibrates the nozzle head  106  accordingly. 
     When the displacement of the nozzle head  106  in the sub-scanning direction occurs at the time of applying the liquid  120  to the substrate  121  by moving the nozzle head  106  in the main-scanning direction, the amount of the liquid  120  applied to the application target region may be unequal in the width direction of the application target region, or the liquid  120  may be applied to a part which is not the application target region because of the nozzle head  106  slipping out of a position corresponding to the application target region. 
     It is necessary to offset a displacement amount of the nozzle head  106  relative to the substrate  121  in order to prevent such a trouble and to appropriately apply the liquid  120 . 
       FIGs. 5A and 5B  show the nozzle head and a position adjustment section of the application device according to the first embodiment of the present invention. 
       FIG. 6  is an explanatory diagram showing operation of the position adjustment section of the application device according to the first embodiment of the present invention. 
       FIG. 7  is a diagram illustrating the operation of the position adjustment section of the application device according to the first embodiment of the present invention. 
     The displacement amount detection section  111  described above converts vibration intensity corresponding to the detected displacement amount of the nozzle head  106  into the electric signal of a displacement amount signal, and outputs the displacement amount signal which indicates the magnitude (distance) and the direction of the detected displacement amount to the control section  119 . 
       FIGs. 5A and 5B  show the nozzle head  106  and the position adjustment section  110  viewed from above the nozzle hole  168  of the nozzle plate  167  of the nozzle head  106 . The displacement amount detection section  111  is, for example, equipped with the nozzle head  106  as shown in  FIG. 5A . While the displacement amount detection section  111  moves the carriage  105  in the X-axis direction along the rail  103  and reciprocates the nozzle head  106  one time in the main-scanning direction which is along the rail  103 , the displacement amount detection section  111  detects the vibration intensity of a vibration which occurs when the nozzle head  106  slips in the sub-scanning direction (Y-axis direction) which is the orthogonal direction to the main-scanning direction. Then, the displacement amount detection section  111  outputs the displacement amount signal regarding the vibration intensity to the control section  119 . The control section  119  stores waveform data of the displacement amount signal in a memory  118 . When a value of the displacement amount signal is positive, the value thereof indicates that the displacement is to the right in a travelling direction of the nozzle head  106 , for example. When a value of the displacement amount signal is negative, the value thereof indicates that the displacement is to the left in the travelling direction of the nozzle head  106 , for example. 
     The displacement amount detection section  111  may be equipped with the carriage  105  as shown in  FIG. 5B . 
     Furthermore, the displacement amount detection section  111  may use the average value of a plurality of displacement detected by reciprocating the carriage  105  along the rail  103  multiple times as a displacement amount. 
     The vibration intensity detected by the displacement amount detection section  111  also indicates a distortion peculiar to the rail  103 , the distortion which is resulted from bumpiness or the like of the rail  103 . That is, the more the rail  103  is distorted, the larger the vibration detected by the displacement amount detection section  111  is. Hence, the vibration intensity and the displacement amount signal are correlative with the distortion of the rail  103 . Consequently, the vibration intensity which is correlative with the distortion of the rail  103  and the displacement amount signal which corresponds to the vibration intensity can be correlated with the rail  103  in the length direction thereof. 
     The control section  119  generates a driving signal for moving the nozzle head  106  in the offset direction which offsets a displacement amount of the nozzle head  106  relative to the substrate  121  in accordance with a displacement amount signal which is regarding vibration intensity detected by the displacement amount detection section  111 , and which is stored in the memory  118 . For example, the control section  119  generates a driving signal which has the same magnitude level as the magnitude of the displacement amount signal and whose value (positive or negative) is opposite thereto. In this case, the driving signal is generated by converting the phase of the displacement amount signal into the opposite. Waveform data regarding the generated driving signal is also stored in the memory  118 . 
     The control section  119  outputs the generated driving signal to the position adjustment section  110  so as to operate the position adjustment section  110  such that the amount of the displacement of the nozzle head  106 , the displacement which occurs when the carriage  105  vibrates, is offset. 
     More specifically, the control section  119  operates the position adjustment section  110  by outputting a driving signal in response to the start of movement of the carriage  105 . Then, as shown in  FIG. 6 , the position adjustment section  110  offsets the amount of displacement of the nozzle head  106 , the displacement which occurs following a vibration of the carriage  105 , by performing an offset action downwardly in the Y-axis direction at a position where the displacement of the nozzle head  106  occurs upwardly in the Y-axis direction following the vibration of the carriage  105  which occurs upwardly in the Y-axis direction because of a distortion of the rail  103  or the like. 
     Similarly, the position adjustment section  110  offsets the amount of displacement of the nozzle head  106 , the displacement which occurs following a vibration of the carriage  105 , by performing the offset action upwardly in the Y-axis direction at a position where the displacement of the nozzle head  106  occurs downwardly in the Y-axis direction following the vibration of the carriage  105  which occurs downwardly in the Y-axis direction because of a distortion of the rail  103  or the like. 
     The control section  119  continuously operates the position adjustment section  110  based on a driving signal while the carriage  105  moves the nozzle head  106  in the main-scanning direction. As a result, by the offset action of the position adjustment section  110 , the amount of the displacement of the nozzle head  106 , the displacement which occurs because of the distortion peculiar to the rail  103 , can be offset. Accordingly, the nozzle head  106  can be moved linearly relative to the substrate  121 , as shown in  FIG. 7 . 
     The offset processing is not limited to being performed by operating the position adjustment section  110 , the offset processing to offset the amount of displacement of the nozzle head  106 , the displacement which occurs following a vibration of the carriage  105 , based on a driving signal which the control section  119  generates in accordance with a displacement amount signal which corresponds to vibration intensity detected by the displacement amount detection section  111 . 
     For example, the offset processing to offset the amount of displacement of the nozzle head  106 , the displacement which occurs following a vibration of the carriage  105 , can be performed by making the moving device  102  function as a position adjustment section. 
     In this case, the control section  119  generates a driving signal in accordance with a displacement amount signal which is regarding vibration intensity detected by the displacement amount detection section  111 , and which is stored in the memory  118 , the driving signal which has the same magnitude level as the magnitude of a displacement amount signal and whose value (positive or negative) is the same as the value of the displacement amount signal. That is, the driving signal is a signal whose phase is the same as the phase of the displacement amount signal. 
     The control section  119  outputs the driving signal to the moving device  102 , and operates the moving device  102  such that the amount of the displacement of the nozzle head  106 , the displacement which occurs following the vibration of the carriage  105 , is offset. The control section  119  operates the moving device  102  such that the worktable  101  is moved in the same direction (sub-scanning direction) with the same magnitude (distance) as the direction and the magnitude (distance) of the displacement amount of the nozzle head  106 . By moving the worktable  101  in the sub-scanning direction in accordance with the displacement amount of the nozzle head  106 , the substrate  121  disposed on the worktable  101  conforms to the displacement of the nozzle head  106 . Therefore, the amount of the displacement of the nozzle head  106 , the displacement which occurs following the vibration of the carriage  105 , can be offset. 
     The function of the control section  119  to generate a driving signal in accordance with a displacement amount signal and to output the generated driving signal to the position adjustment section  110  may be performed by a logic circuit or by execution of a program. 
     (2) Operation of Application Device According to First Embodiment and Application Method Thereby 
     In the following, operation of the application device  100 , an application method by using the application device  100 , and the like are described. 
       FIG. 8  is an explanatory diagram showing a pattern of application of a liquid, the application performed by moving a nozzle head of the application device according to the first embodiment of the present invention. 
     First, the control section  119  operates the carriage  105  in a state where the liquid  120  is not discharged from the nozzle hole  168  of the nozzle head  106 , and reciprocates the carriage  105  with the nozzle head  106  one time in the main-scanning direction along the rail  103 . 
     While the nozzle head  106  reciprocates one time along the rail  103 , the displacement amount detection section  111  detects the amount of displacement of the nozzle head  106  in the sub-scanning direction, the displacement which occurs while the nozzle head  106  moves in the main-scanning direction. 
     The displacement amount detection section  111  detects the amount of the displacement of the nozzle head  106  in the sub-scanning direction, the displacement caused by a distortion peculiar to the rail  103 , and outputs vibration intensity and a displacement amount signal regarding the detected amount of the displacement of the nozzle head  106  to the control section  119 . 
     The control section  119  stores waveform data regarding the vibration intensity and the displacement amount signal, which are supplied from the displacement amount detection section  111 , in the memory  118 . 
     The control section  119  generates a driving signal in accordance with the vibration intensity and the displacement amount signal, and stores waveform data regarding the driving signal. 
     In the above, the carriage  105  is reciprocated one time in the main-scanning direction along the rail  103 , but not limited thereto. The carriage  105  may be reciprocated multiple times in the main-scanning direction along the rail  103 , and the displacement amount detection section  111  may use the average value of a plurality of displacement detected by reciprocating the carriage  105  multiple times as a displacement amount. 
     Next, the liquid tank  108  is filled with the liquid  120 . In a case where the liquid tank  108  is replaceable, the liquid tank  108  filled with the liquid  120  is set to the supply pipe  107 , and the supply device  116  is set to the liquid tank  108 . 
     At this point, the supply pipe  107  is empty, namely, the supply pipe  107  is not filled with the liquid  120 . 
     After that, the control section  119  operates the carriage  105  so as to move the nozzle head  106  to the standby position. At the standby position, the airtight cap  150  closely contacts with the lower end of the nozzle head  106 . 
     Then, while operating the vacuum pump  140  so as to reduce the pressures in the supply pipe  107  and the nozzle head  106 , the control section  119  operates the supply device  116 . Consequently, the liquid  120  in the liquid tank  108  flows into the supply pipe  107 , and then is supplied into the nozzle head  106 . 
     In addition, the control section  119  determines the set flow rate of the massflow controller  109 , and adjusts the amount of the liquid  120  which is discharged from the nozzle head  106 . 
     Next, the substrate  121  is disposed on the worktable  101 . 
     As shown in  FIG. 8 , a plurality of panel regions R 1  and a plurality of margin regions R 2  are arranged alternately on the substrate  121 . The plurality of panel regions R 1  is cut out from the substrate  121  at the end so as to be a plurality of EL panels  1 , respectively, and a plurality of application target regions R 3  to which the liquid  120  is applied is provided in each of the panel regions R 1 . Each of the margin regions R 2  is located between the panel regions R 1 , and is a non-application target region to which the liquid  120  is not necessary to be applied. 
     Next, the control section  119  operates the carriage  105 . At the time, the control section  119  keeps operating the supply device  116  which supplies the liquid  120  stored in the liquid tank  108  into the supply pipe  107 . 
     The control section  119  operates the carriage  105  to move the nozzle head  106  with the carriage  105  in the main-scanning direction. 
     Since the supply device  116  keeps operating at the time, the liquid  120  stored in the liquid tank  108  is supplied to the nozzle head  106 , and a flow rate of the liquid  120  flowing in the supply pipe  107  is controlled by the massflow controller  109  to be kept at the set flow rate which is fixed. 
     Accordingly, while the carriage  105  moves, the liquid  120  is continuously discharged from the nozzle hole  168  of the nozzle head  106 . As a result, the liquid  120  discharged from the nozzle hole  168  of the nozzle head  106  is applied linearly to one of the application target regions R 3  on the substrate  121 , so that a linear organic layer pattern which is along the main-scanning direction is formed in the application target region R 3 . 
     When the carriage  105  moving from one end to the other end of the moving area thereof reaches the other end, the control section  119  stops the carriage  105 . 
     Next, the control section  119  controls the moving device  102  to move the worktable  101  and the substrate  121  through a prescribed distance in the sub-scanning direction. 
     At the time as well, the liquid  120  is continuously discharged from the nozzle hole  168  of the nozzle head  106 . As a result, a linear organic layer pattern which is along the sub-scanning direction is formed on the substrate  121 . The moving device  102  stops thereafter. 
     Next, the control section  119  operates the carriage  105  to move the nozzle head  106  with the carriage  105  the other way around in the main-scanning direction. 
     At the time as well, the liquid  120  is continuously discharged from the nozzle hole  168  of the nozzle head  106 . As a result, the liquid  120  discharged from the nozzle hole  168  of the nozzle head  106  is applied linearly to another of the application target regions R 3  on the substrate  121 , so that a linear organic layer pattern which is along the main-scanning direction is formed in the application target region R 3 . 
     When the carriage  105  moving from the other end to the one end of the moving area thereof reaches the one end, the control section  119  stops the carriage  105 . 
     Next, the control section  119  controls the moving device  102  to move the worktable  101  and the substrate  121  through a prescribed distance in the sub-scanning direction. 
     At the time as well, the liquid  120  is continuously discharged from the nozzle hole  168  of the nozzle head  106 . As a result, a linear organic layer pattern which is along the sub-scanning direction is formed on the substrate  121 . The moving device  102  stops thereafter. 
     After that, the control section  119  repeats controlling the carriage  105  and the moving device  2 , and controlling the supply device  116  and the massflow controller  109 . 
     Consequently, the carriage  105  repeatedly moves from end to end of the moving area thereof while the liquid  120  is continuously discharged from the nozzle hole  168  of the nozzle head  106 . Also, the moving device  2  moves the worktable  101  and the substrate  121  through a prescribed distance in the sub-scanning direction when the carriage  105  reaches an end (the one end or the other end) of the moving area thereof. 
     As a result, as shown in  FIG. 8 , an organic layer pattern which looks as if a kudzu vine is folded is formed on the substrate  121  by the liquid  120  discharged from the nozzle head  106 . 
     The control section  119  repeats controlling the carriage  105 , the moving device  102 , the supply device  116 , the massflow controller  109 , and the like to apply the liquid  120  onto the substrate  121 , during which the control section  119  outputs a driving signal generated beforehand to the position adjustment section  110 . 
     That is, when the control section  119  operates the carriage  105  to move the nozzle head  106  with the carriage  105  in the main-scanning direction so as to apply the liquid  120  to the substrate  121 , the control section operates the position adjustment section  110  based on a driving signal. 
     Then, the position adjustment section  110  which is operated based on the driving signal adjusts a position of the nozzle head  106  by moving in the sub-scanning direction, and offsets the amount of displacement of the nozzle head  106  in the sub-scanning direction, the displacement which occurs following a vibration of the carriage  105  resulted from a distortion peculiar to the rail  103 . 
     The position adjustment section  110  offsets the amount of the displacement of the nozzle head  106  in the sub-scanning direction, the displacement which occurs following the vibration of the carriage  105 , namely, offsets the amount of the displacement of the nozzle head  106  relative to the substrate  121 . 
     Consequently, while the carriage  105  moves the nozzle head  106  in the main-scanning direction, the amount of a displacement of the nozzle head  106  in the sub-scanning direction is offset by the position adjustment section  110  being operated, and hence, the nozzle head  106  can linearly move in the main-scanning direction relative to the substrate  121 . 
     Since the nozzle head  106  whose amount of displacement in the sub-scanning direction is offset linearly moves in the main-scanning direction relative to the substrate  121 , the liquid  120  discharged from the nozzle head  106  is linearly applied onto the substrate  121 . As a result, a linear organic layer pattern which is along the main direction is formed in each of the application target regions R 3  on the substrate  121 . 
     The control section  119  recognizes a current position of the nozzle head  106  moving and applying the liquid  120 . The control section  119  is structured to be able to identify a current position of the nozzle head  106  relative to the substrate  121  by performing prescribed arithmetic processing based on the size of the substrate  121  and the respective moving areas and moving speeds of the carriage  105  and the moving device  102 , and/or structured to be able to estimate, from the current position, a position where the nozzle head is in a prescribed time by performing arithmetic processing similar to the prescribed arithmetic processing. 
     The control section  119  moves the nozzle head  106  to the standby position where the airtight cap  150  is at a timing when the nozzle head  106  is at a position corresponding to one of the margin regions R 2  of the substrate  121 , in order to remove air bubbles in the nozzle head  106  or to fill the liquid tank  108  with the liquid  121 , before the discharge of the liquid  120  from the nozzle head  106  becomes impossible. Thereby, the liquid  120  does not run out in the panel regions R 1  of the substrate  121 . 
     As described above, according to the application device  100  in the first embodiment, when the carriage  105  is moved along the rail  103 , and the nozzle head  106  is moved in the main-scanning direction so as to apply the liquid  120  to the substrate  121 , the amount of displacement of the nozzle head  106  in the sub-scanning direction can be offset by the position adjustment section  110  being operated, the displacement which occurs following a vibration of the carriage  105  caused by a distortion peculiar to the rail  103 . 
     In addition, according to the application device  100 , the nozzle head  106  can be linearly moved in the main-scanning direction relative to the substrate  121  by offsetting a displacement amount of the nozzle head  106  in the sub-scanning direction by the position adjustment section  110  being operated. 
     Moreover, according to the application device  100 , the liquid  120  discharged from the nozzle head  106  can be appropriately applied to the substrate  121  by linearly moving the nozzle head  106  in the main-scanning direction relative to the substrate  121 . 
     More specifically, the liquid  120  can be appropriately applied to the substrate  121  (substrate  10 ) by linearly moving the nozzle head  106  in the main-scanning direction along each of a plurality of banks  13  (described below) which are partition walls extending in the main-scanning direction, without climbing over the banks  13  in the sub-scanning direction and/or being applied to the outside of the application target regions R 3 . Each of the application target regions R 3  is located between the banks  13  which are next to each other. 
     Second Embodiment 
     (3) Structure of Application Device According to Second Embodiment 
       FIG. 9  is a schematic view showing the application device according to a second embodiment of the present invention. 
       FIG. 10A  is a diagram illustrating detection of a distortion of a bank by an image pickup section of the application device according to the second embodiment of the present invention, and  FIGS. 10B to 10F  show different setting positions of the image pickup section, respectively. 
       FIGS. 10A to 10F  show the principal part of the application device viewed from above the carriage  105 . 
     The application device  100 A according to the second embodiment is different from the application device  100  according to the first embodiment in that the application device  100 A includes an image pickup section  112  which can pick up an image of the top surface of the substrate  121  disposed on the worktable  101 . The image pickup section  112  is equipped with the carriage  105 , for example. 
     The image pickup section  112  includes, for example, a pickup element such as a CCD, and picks up an image of the top surface of the substrate  121  while moving in the main-scanning direction with the nozzle head  106  which moves when the carriage  105  moves. The image pickup section  112  picks up an image of an area of the substrate  121 , the area including at least one application target region R 3  to which the liquid  120  is applied in the main-scanning direction. (See  FIG. 10A .) 
     The image pickup section  112  picks up an image of a position at the application target region R 3  on the substrate  121 , the position to which the liquid  120  is to be applied. 
     The image pickup section  112  picks up an image of banks  13  (described below) which are partition walls extending in the main-scanning direction and which sandwich the application target region R 3  to which the liquid  120  is applied on the substrate  121 . 
     The image pickup section  112  picks up an image of an application target region R 3  and/or partition walls (banks  13 ) which are features of the substrate  121 , for example, centering on a mark or the like provided with the substrate  121 . Image pickup data of the substrate  121  whose image is picked up by the image pickup section  112  is output to the control section  119 . 
     The image pickup section  112  is controlled by the control section  119 . 
     The position adjustment section  110  is operated based on a driving signal so as to move the nozzle head  106  in accordance with a displacement amount of the nozzle head  106  in the sub-scanning direction, the displacement amount which is detected by the displacement amount detection section  111 , in the offset direction which offsets the displacement amount of the nozzle head  106  relative to the substrate  121 . In addition, the position adjustment section  110  is operated to adjust a position of the nozzle head  106  based on the features of the substrate  121  by moving the nozzle head  106  in the sub-scanning direction, the features whose image is picked up by the image pickup section  112 . The position of the nozzle head  106  is adjusted such that the nozzle head  106  is disposed at a position which corresponds to an application target region R 3  of the substrate  121 . More specifically, the position of the nozzle head  106  is adjusted such that the nozzle hole  168  of the nozzle head  106  is disposed at the near-center of the application target region R 3  in a width direction thereof which is the orthogonal direction to the main-scanning direction. 
     The control section  119  allows the image pickup section  112  to pick up an image of the area of the substrate  121 , the area including an application target region R 3 , while moving the carriage  105  along the rail  103  so as to move the image pickup section  112  in the main-scanning direction. The image pickup data of the substrate  121  whose image is picked up by the image pickup section  112  is correlated with a position of the carriage  105  which moves along the rail  103 . 
     The control section  119  performs prescribed image recognition processing on the image pickup data of the substrate  121  whose image is picked up by the image pickup section  112 , extracts banks  13  which are the features of the substrate  121 , extracts reference lines which are lined with the side walls of the banks  13 , respectively, and obtains a center line of the application target region R 3  which is sandwiched by the banks  13 . 
     As shown in  FIG. 10A , when a bank  13  formed on the substrate  121  (substrate  10 ) is formed as designed, the extracted reference line regarding the bank  13  is linearly extended in the main-scanning direction at a prescribed position. 
     On the other hand, when a bank  13  is not formed as designed, and the width of the bank  13 , the width being along the sub-scanning direction, is uniformly wide or uniformly narrow, the extracted reference line regarding the bank  13  is linearly extended in the main-scanning direction at a position which is slipped in the sub-scanning direction. 
     Also, when a bank  13  is not formed as designed and is distorted, the extracted reference line regarding the bank  13  is irregularly extended. For example, the reference line is distorted and bent in the sub-scanning direction. 
     The control section  119  generates position adjustment amount data based on the extracted reference lines of the banks  13  for the position adjustment section  110  to move the nozzle head  106  in the sub-scanning direction such that the position of the nozzle head  106  is adjusted to be a position corresponding to the application target region R 3  between the banks  13  on the substrate  121 . The position adjustment data corresponds to slips and/or distortions of the extracted reference lines in the sub-scanning direction which is the orthogonal direction to the main-scanning direction, and is correlated with a position of the carriage  105  which moves along the rail  103 . 
     That is, the position adjustment amount data defines a moving amount of the nozzle head  106  in the sub-scanning direction, the movement amount for adjusting a position of the nozzle head  106  to be at a position corresponding to the application target region R 3  in accordance with a position of the nozzle head  106  which moves in the main-scanning direction along the rail  103 . The generated position adjustment amount data is stored in the memory  118 . 
     The control section  119  moves the nozzle head  106  in the sub-scanning direction by operating the position adjustment section  110  according to the position adjustment amount data generated based on the image pickup data of the substrate  121  whose image is picked up by the image pickup section  112 . Consequently, the nozzle head  106  is disposed at a position corresponding to the application target region R 3 , the position which keeps a prescribed amount (distance) from the banks  13  in a horizontal direction. More specifically, the nozzle hole  168  of the nozzle head  106  is disposed at a position corresponding to the near-middle between the banks  13 . 
     The liquid  120  discharged from the nozzle head  106 , which moves in the main-scanning direction, can be uniformly applied to the application target region R 3  in the width direction thereof by operating the position adjustment section  110  by the control section  119  based on the position adjustment amount data so as to dispose the nozzle hole  168  of the nozzle head  106  at a position corresponding to the near-middle between the banks  13 , and accordingly to dispose the nozzle head  106  at a position corresponding to the application target region R 3  between the banks  13 . 
     The processing to dispose the nozzle head  106  at a position corresponding to an application target region R 3  between banks  13  based on the position adjustment amount data is not limited to be performed by operating the position adjustment section  110  by the control section  119 . 
     For example, the processing to dispose the nozzle head  106  at a position corresponding to an application target region R 3  between banks  13  may be performed by making the moving device  102  function as a position adjustment section. More specifically, the moving device  102  moves the worktable  101  in the sub-scanning direction based on the position adjustment amount data, and accordingly, the substrate  121  disposed on the worktable  101  is moved relative to the nozzle head  106 . As a result, the processing mentioned above is performed. 
     Practically, the control section  119  operates the position adjustment section  110  to move the nozzle head  106  in the sub-scanning direction based on a moving amount which is calculated from a moving amount of the nozzle head  106  according to a driving signal and a moving amount of the nozzle head  106  according to the position adjustment amount data. 
     That is, the control section  119  moves the nozzle head  106  in the sub-scanning direction such that the amount of displacement of the nozzle head  106  in the sub-scanning direction is offset, the displacement which occurs while the carriage  105  moves in the main-scanning direction, and the nozzle head  106  is disposed at a position corresponding to an application target region R 3  between banks  13  in accordance with the respective shapes of the banks  13  formed on the substrate  121 . 
     The application device  100 A and the application device  100  have a similar structure and operate in a similar way, except for what is described above. 
     In the embodiment described above, the image pickup section  112  is equipped with the carriage  105 , but not limited thereto. As shown in  FIG. 10B , the image pickup section  112  may be equipped with the nozzle head  106 . 
     Also, as shown in  FIGS. 10C and 10D , the image pickup section  112  may be provided on the extension of the nozzle head  106  in the main-scanning direction. In this case, the center line of the application target region R 3  on which the application is performed can be obtained at the same time as the application is performed. Accordingly, an effect of reducing the capacity of the memory  118  of the control section  119  can be obtained. In this case as well, the image pickup section  112  may be equipped with the carriage  105  as shown in  FIG. 10C  or may be equipped with the nozzle head  106  as shown in  FIG. 10D . 
     Furthermore, as shown in  FIGS. 10E and 10F , two image pickup sections  112  may be provided on the extension of the nozzle head  106  in the main-scanning direction and at the front and the back of the moving direction of the nozzle head  106 . In this case, the center line of the application target region R 3  can be obtained in two-way application in the main-scanning direction, too. In this case too, the image pickup section  112  may be equipped with the carriage  105  as shown in  FIG. 10E  or may be equipped with the nozzle head  106  as shown in  FIG. 10F . 
     (4) Operation of Application Device According to Second Embodiment 
     Next, operation of the application device  100 A according to the second embodiment is described. 
     Here, the description is given to the operation of the position adjustment section  110  to dispose the nozzle head  106  in accordance with the respective shapes of the banks  13  formed on the substrate  121  at a position which corresponds to an application target region R 3  between banks  13 . While the position adjustment section  110  is operated to adjust a position of the nozzle head  106  in accordance with the respective shapes of the banks  13 , the position adjustment section  110  is also operated to offset the amount of displacement of the nozzle head  106  in the sub-scanning direction, the displacement which occurs while the carriage  105  moves in the main-scanning direction. The operation of the position adjustment section  110  to offset the amount of displacement of the nozzle head  106  is similar to the operation thereof in the first embodiment, and hence the description thereof is omitted. The descriptions of the other operations of the application device  100 A which are similar to the operations of the application device  100  according to the first embodiment are also omitted or simplified. 
     First, the substrate  121  is disposed on the worktable  101 . At the time, the substrate  121  is set to the worktable  101  such that banks  13  formed on the substrate  121  extend in the main-scanning direction (X-axis direction). 
     Next, the control section  119  operates the carriage  105  in a state where the liquid  120  is not discharged from the nozzle hole  168  of the nozzle head  106 , and reciprocates the carriage  105  with the nozzle head  106  and the image pickup section  112  one time in the main-scanning direction along the rail  103 . 
     While the image pickup section  112  reciprocates one time along the rail  103 , the image pickup section  112  picks up an image of an area of the substrate  121 , the area including an application target region R 3  and at least one bank  13  contiguous to the application target region R 3  to which the liquid  120  discharged from the nozzle head  106  is to be applied at the next step. 
     The control section  119  extracts a reference line regarding the bank  13  based on the image pickup data of the image picked up by the image pickup section  112 . 
     The control section  119  generates the position adjustment amount data based on the extracted reference line, the position adjustment amount data which is used for moving the nozzle head  106  in the sub-scanning direction. The position adjustment amount data is stored in the memory  118 . 
     While the image pickup section  112  and the nozzle head  106  reciprocate one time along the rail  103 , the displacement amount detection section  111  detects a displacement amount of the nozzle head  106 , and outputs vibration intensity and a displacement amount signal regarding the displacement amount to the control section  119 . 
     The control section  119  stores waveform data corresponding to the vibration intensity and the displacement amount signal which are supplied from the displacement amount detection section  111  in the memory  118 . 
     The liquid tank  108  is filled with the liquid  120 , and the liquid  120  in the liquid tank  108  is supplied into the supply pipe  107 , and then to the nozzle head  106 . 
     Next, the control section  119  operates the carriage  105  to move the nozzle head  106  with the carriage  105  in the main-scanning direction. At the time, the supply device  116  keeps operating, so that the liquid  120  in the liquid tank  108  is supplied to the nozzle head  106 , and the massflow controller  109  controls a flow rate of the liquid  120  flowing in the supply pipe  107  to be kept at the set flow rate which is fixed. As a result, the liquid  120  is continuously discharged from the nozzle hole  168  of the nozzle head  106  while the carriage  105  moves. 
     The discharged liquid  120  is applied onto the substrate  121  linearly, and hence a linear organic layer which is pattern along the main-scanning direction is formed on the substrate  121 . 
     The control section  119  operates the position adjustment section  110  based on the position adjustment amount data which is generated beforehand to move the nozzle head  106  in the sub-scanning direction, and to dispose the nozzle hole  168  of the nozzle head  106  at a position corresponding to the near-middle between the banks  13 , while operating the carriage  105  and the like to move the nozzle head  106  in the main direction and apply the liquid  120  onto the substrate  121  thereby. 
     That is, since the nozzle head  106  which moves in the main-scanning direction when the carriage  105  moves is disposed at a position corresponding to the near-middle between the banks  13 , the nozzle head  106  moves along the near-middle between the banks  13 . Consequently, the liquid  120  discharged from the nozzle head  106  is appropriately applied to the application target region R 3  between the banks  13 , and applied uniformly in the width direction of the application target region R 3 . 
     When the nozzle head  106  applies the liquid  120  to the application target region R 3  between the banks  13 , and the carriage  105  moves in the main-scanning direction, the image pickup section  112  picks up an image of an area of the substrate  121 , the area including the next application target region R 3  and at least one bank  13  contiguous to the next application target region R 3 . The next application target region R 3  is located next to the application target region R 3  to which the liquid  120  is currently applied, and the liquid  120  is applied to the next application target region R 3  next. 
     The control section  119  extracts a reference line regarding the bank  13  contiguous to the next application target region R 3 , and generates the position adjustment amount data based on the extracted reference line. 
     That is, when the control section  119  moves the carriage  105  so as to apply the liquid  120  discharged from the nozzle head  106  to a plurality of application target regions R 3 , the control section  119  allows the image pickup section  112  to pick up an image of an area of the substrate  121 , the area including an application target region R 3  to which the nozzle head  106  is going and at least one bank  13  which is contiguous to the application target region R 3 , so as to extract a reference line regarding the bank  13 , and the like. Before the nozzle head  106  reaches the application target region R 3  whose image is picked up, and liquid  121  is applied to the application target region R 3 , the control section  119  generates the position adjustment amount data which is used for disposing the nozzle head  106  at a position corresponding to the application target region R 3 . 
     The area of the substrate  121 , the area whose image is picked up by the image pickup section  112 , is not limited to including an application target region R 3  which is the next line to an application target region R 3  to which the liquid  120  is currently applied by the nozzle head  106 , and a bank  13  which is contiguous to the application target region R 3  at the next line. The image pickup section  112  may pick up an image of an area of the substrate  121 , the area including an application target region R 3  which is located at a few lines ahead of the application target region R 3  to which the liquid  120  is currently applied, and a bank  13  which is contiguous to the application target region R 3 . 
     As described above, according to the application device  100 A in the second embodiment, when the nozzle head  106  is moved in the main-scanning direction to apply the liquid  120  to the substrate  121 , the position adjustment section  110  is operated to adjust a position of the nozzle head  106  in the sub-scanning direction in accordance with a position and/or a shape of one or both of banks  13  which are next to each other and whose image is picked up by the image pickup section  112 . As a result, the application device  100 A can move the nozzle head  106  to a position corresponding to the application target region R 3 , and adjust a position of the nozzle hole  168  of the nozzle head  106  to be a position corresponding to the near-middle between the banks  13 . 
     According to the application device  100 A, the position adjustment section  110  is operated to adjust a position of the nozzle head  106  to be a position corresponding to the application target region R 3  between the banks  13 , so that the nozzle hole  168  of the nozzle head  106  which moves along the rail  103  moves along the near-middle between the banks  13 . As a result, the liquid  120  discharged from the nozzle head  106  can be appropriately applied to the application target region R 3  between the banks  13 . 
     More specifically, the nozzle head  106  is moved relative to the substrate  121  (substrate  10 ) along the banks  13  which extend in the main-scanning direction. As a result, the liquid  120  can be appropriately applied to the application target region R 3  between the banks  13 , and uniformly applied in the width direction of the application target region R 3 , without being applied to the outside of the application target region R 3 . 
     As described above, in the application device  100 A, the image pickup section  112  picks up an image of an area of the substrate  121  when the carriage  105  moves in the main-scanning direction and the nozzle head  106  applies the liquid  120  to a plurality of application target regions R 3 , each of which is located between banks  13  which are next to each other, and the area described above includes an application target region R 3  to which the nozzle head  106  is going and at least one bank  13  which is contiguous to the application target region R 3 , but is not limited thereto. 
     As shown in  FIGS. 10C and 10D , the image pickup section  112  may be provided on the extension of the nozzle head  106  in the main-scanning direction, and the area of the substrate  121  whose image is picked up by the image pickup section  112  may be including an application target region R 3  to which the liquid  120  is currently applied and at least one bank  13  which is contiguous to the application target region R 3 . 
     When, as shown in  FIG. 10C , the image pickup section  112  is equipped with the carriage  105 , and the nozzle head  106  is provided so as to be movable in the sub-scanning direction by the position adjustment section  110 , first, the image-pickup section  112  is adjusted such that the center of a range of which the image-pickup section  112  picks up an image (image-pickup range of the image-pickup section  112  hereinafter) is a position to which the liquid  120  discharged from the nozzle head  106  is applied on the substrate  121 . 
     The control section  119  extracts one or both of banks  13  which are the features of the substrate  121 , and next to each other, and then extracts a center line between the banks  13  which sandwich an application target region R 1 , for example, by performing prescribed image recognition processing on the image pickup data of the substrate  121  whose image is picked up by the image pickup section  112 . 
     Then, when the control section  119  moves the carriage  105  to apply the liquid  120  discharged from the nozzle head  106  to the application target region R 3  along the banks  13  which extend in the main-scanning direction, the control section  119  allows the image pickup section  112  to pick up an image of the banks  13  which are located at the both sides of the application target region R 3 , respectively, and extracts a center line between the banks  13 . 
     When the center line extracted by the control section  119  from the image pickup data is, for example, distorted to the right, the application target region R 3  between the banks  13  is distorted to the right relative to the image pickup section  112  (carriage  105 ). Hence, the control section  119  operates the position adjustment section  110  so as to move the nozzle head  106  to the right in the travelling direction thereof for a moving amount corresponding to the amount of the distortion of the center line. Similarly, when the line extracted by the control section  119  from the image pickup data is, for example, distorted to the left, the application target region R 3  between the banks  13  is distorted to the left relative to the image pickup section  112  (carriage  105 ). Hence, the control section  119  operates the position adjustment section  110  so as to move the nozzle head  106  to the left in the travelling direction thereof for a moving amount corresponding to the amount of the distortion of the center line. 
     That is, by picking up an image of an application target region R 3  to which the liquid  120  discharged from the nozzle head  106  is currently applied and banks  13  which sandwich the application target region R 3 , the control section  119  instantly judges a distortion of the application target region R 3  and/or the banks  13  in the sub-scanning direction, and operates the position adjustment section  110 . Then, the position adjustment section  110  moves the nozzle head  106  in the sub-scanning direction, and adjusts a position of the nozzle head  106  to be a position corresponding to the application target region R 3 . 
     By these operations of the image pickup section  112  and the position adjustment section  110  as well, the position of the nozzle head  106  is adjusted to be the position corresponding to the application target region R 3  between the banks  13 , and the nozzle hole  168  of the nozzle head  106  can be moved along the near-middle between the banks  13 . Accordingly, the liquid  120  discharged from the nozzle head  106  can be appropriately applied to the application target region R 3  between the banks  13 , and uniformly applied in the width direction of the application target region R 3 . 
     When, as shown in  FIG. 10D , the image pickup section  112  is equipped with the nozzle head  106  so as to be movable in the sub-scanning direction by the position adjustment section  110 , and the nozzle head  106  and the image pickup section  112  are moved together in the sub-scanning direction by operating the position adjustment section  110 , the image pickup section  112  and the nozzle head  106  are set to the application device  110 A such that the center of the image-pickup range of the image pickup section  112  corresponds to the position of the nozzle head  106 , for example. 
     In this case, the control section  119  extracts one or both of banks  13  which are the features of the substrate  121 , and next to each other, and then extracts a center line between the banks  13  which sandwich an application target region R 1 , for example, by performing prescribed image recognition processing on the image pickup data of the substrate  121  whose image is picked up by the image pickup section  112 . 
     Then, the control section  119  operates the position adjustment section  110  such that the center line extracted by the control section  119  from the image pickup data always be the center of the image-pickup range of the image pickup section  112 . As a result, the nozzle head  106  can be always disposed at a position corresponding to the near-middle of the application target region R 3  between the banks  13 . 
     That is, the control section  119  operates the position adjustment section  119  such that the center of the image-pickup range of the image pickup section  112  becomes the near-middle of the application target region R 3  between the banks  13  while allowing the image pickup section  112  to pick up an image of the application target region R 3  to which the liquid  120  discharged from the nozzle head  106  is currently applied and the banks  13  which sandwich the application target region R 3 . As a result, the nozzle head  106  whose position corresponds to the center of the image-pickup range of the image pickup section  112  is adjusted to be disposed at a position corresponding to the application target region R 3 . 
     By these operations of the image pickup section  112  and the position adjustment section  110  as well, the position of the nozzle head  106  can be adjusted to be the position corresponding to the application target region R 3  between the banks  13 , and the nozzle hole  168  of the nozzle head  106  can be moved along the near-middle between the banks  13 . Accordingly, the liquid  120  discharged from the nozzle head  106  can be appropriately applied to the application target region R 3  between the banks  13 . 
     In addition, as shown in  FIGS. 10E and 10F , when two image pickup sections  112  are severally provided on the extension of the nozzle head  106  in the main-scanning direction, and at the front and the back of the moving direction of the nozzle head  106 , the similar operations described above referring  FIGS. 10C and 10D  can be appropriately performed in two-way application in the main-scanning direction. Accordingly, the liquid  120  can be more uniformly applied to the application target region R 3 . 
     (5) Structure of Electroluminescence Display Panel 
     Next, the structure of an electroluminescence (EL) panel  1  which is manufactured by using the application device according to the embodiments of the present invention is described. 
     A plurality of EL display panels  1  are formed on the large substrate  121 , and each of the EL display panels  1  is cut out therefrom, as shown in  FIG. 8 . 
     The large substrate  121  is divided into a plurality of small substrates  10 , each of which corresponds to each of the EL panels  1 . 
       FIG. 11  is a plane view showing an arrangement of a plurality of pixels P of the EL panel  1  which is a light-emitting panel. 
       FIG. 12  is a plane view showing the schematic structure of the EL panel  1 . 
       FIG. 13  is a circuit diagram showing a circuit for one pixel of the EL panel  1  which is driven by an active matrix driving method. 
     As shown in  FIGs. 11 and 12 , a plurality of pixels P, each of which emits light of red (R), green (G), or blue (B), is disposed in a matrix of a prescribed pattern on the EL panel  1 . 
     On the EL panel  1 , a plurality of scanning lines  2  are arranged to be almost parallel to each other in the row direction, and a plurality of signal lines  3  are arranged to be almost parallel to each other in the column direction. The signal lines  3  are almost the orthogonal direction to the scanning lines  2  viewed from above. 
     Each of a plurality of voltage supply lines  4  is provided between the scanning lines  2  which are next to each other, and provided parallel to the scanning lines  2 . An area which is enclosed by a scanning line  2 , two signal lines  3  which are contiguous to the scanning line  2 , and a voltage supply line  4  corresponds to a pixel P. 
     Of the plurality of pixels P of the EL panel  1 , a plurality of pixels P which emit light of R, a plurality of pixels P which emit light of G, and a plurality of pixels P which emit light of B are arranged along the signal lines  3 , respectively, along the arranged direction of the signal lines  3 . Also, the pixels P which emit light of R, G, and B are arranged in the arranged direction of the scanning lines  2  in the order of a pixel P which emits light of R, a pixel P which emits light of G, and a pixel P which emits light of B. 
     A plurality of banks  13  which are partition walls extending in a direction parallel to the signal lines  3  are provided on the EL panel  1 . Prescribed carrier transfer layers (hole injection layers  8 B and light-emitting layers  8 C described below) are provided in each area sandwiched by the banks  13  which are contiguous to each area, and each area becomes a light-emitting area of the pixels P for emitting light of each color. That is, the banks  13  partition the pixels P of the EL panel  1  into groups of pixels P, each of the groups thereof emitting light of red, green, or blue. Each of the carrier transfer layers transfers electron holes or electrons by applying a voltage. 
     As shown in  FIGS. 12 and 13 , the scanning lines  2 , the signal lines  3  which are the orthogonal direction to the scanning lines  2 , and the voltage supply lines  4  which are parallel to the scanning lines  2  are provided on the EL panel  1 . 
     A switching transistor  5  which is a thin film transistor, a driving transistor  6  which is a thin film transistor, a capacitor  7 , and an EL element  8  are provided in each pixel P of the EL panel  1 . 
     In each pixel P, the gate of the switching transistor  5  is connected to the scanning line  2 , one of the drain and the source of the switching transistor  5  is connected to the signal line  3 , and the other of the drain and the source of the switching transistor  5  is connected to one of two electrodes of the capacitor  7  and to the gate of the driving transistor  6 . 
     One of the drain and the source of the driving transistor  6  is connected to the voltage supply line  4 , and the other of the drain and the source of the driving transistor  6  is connected to the other of the two electrodes of the capacitor  7  and to the anode of the EL element  8 . 
     The cathode of the EL element  8  of each pixel P maintains a constant voltage Vcom, namely, is grounded, for example. 
     In the periphery of the EL panel  1 , each scanning line  2  is connected to a scanning driver. Each voltage supply line  4  is connected to a constant voltage source or a driver which appropriately outputs a voltage signal. 
     Each signal line  3  is connected to a data driver. The EL panel  1  is driven by these drivers by using the active matrix driving method. Prescribed electric power is supplied to each voltage supply line  4  by the constant voltage source or the driver mentioned above. 
     Next, the EL panel  1  and the circuitry of a pixel P thereof are described. 
       FIG. 14  is a plane view showing one pixel P of the EL panel  1 . 
       FIG. 15  is a sectional view taken from the line XV-XV in  FIG. 14  and viewed along the arrows in  FIG. 14 . 
     As shown in  FIG. 14 , the switching transistor  5  and the driving transistor  6  are arranged along the signal line  3 . The capacitor  7  is arranged in the vicinity of the switching transistor  5 , and the EL element  8  is arranged in the vicinity of the driving transistor  6 . 
     The switching transistor  5 , the driving transistor  6 , the capacitor  7 , and the EL element  8  are arranged between the scanning line  2  and the voltage supply line  4 . 
     As shown in  FIG. 15 , the driving transistor  6  includes a gate electrode  6   a , a semiconductor film  6   b , a cannel protection film  6   d , impurity semiconductor films  6   f  and  6   g , a drain electrode  6   h , and a source electrode  6   i.    
     The switching transistor  5  includes a gate electrode  5   a , a semiconductor film, a cannel protection film, impurity semiconductor films, a drain electrode  5   h , and a source electrode  5   i . The switching transistor  5  is a thin film transistor similar to the driving transistor  6  which is described in details below, and hence the detailed description of the switching transistor  5  is omitted. 
     As shown in  FIGs. 14 and 15 , an interlayer insulating film  11  which becomes a gate insulating film is deposited all over a surface of the substrate  10 , and an interlayer insulating film  12  is deposited on the interlayer insulating film  11 . 
     The signal line  3  is formed between the interlayer insulating film  11  and the substrate  10 . The scanning line  2  and the voltage supply line  4  are formed between the interlayer insulating film  11  and the interlayer insulating film  12 . 
     The gate electrode  6   a  is formed between the substrate  10  and the interlayer insulating film  11 . 
     The gate electrode  6   a  is composed of a Cr film, an Al film, a Cr/Al laminated film, an AlTi alloy film, or an AlTiNd alloy film, for example. 
     The interlayer insulating film  11  is deposited on the gate electrode  6   a , and the gate electrode  6   a  is covered with the interlayer insulating film  11 . 
     The interlayer insulating film  11  is composed of a silicon nitride or polycrystalline silicon, for example. The intrinsic semiconductor film.  6   b  is formed at a position on the interlayer insulating film  11 , the position corresponding to the gate electrode  6   a . The semiconductor film  6   b  and the gate electrode  6   a  face each other across the interlayer insulating film  11 . 
     The semiconductor film  6   b  is composed of amorphous silicone or polycrystalline silicon, for example. A cannel is formed in the semiconductor film  6   b.    
     On the center part of the semiconductor film  6   b , the insulating channel protection film  6   d  is formed. The cannel protection film  6   d  is composed of a silicone nitride or a silicone oxide, for example. 
     On one end of the semiconductor film  6   b , the impurity semiconductor film  6   f  is formed such that apart of the impurity semiconductor film  6   f  is superposed on the channel protection film  6   d . On the other end of the semiconductor film  6   b , the impurity semiconductor film  6   g  is formed such that a part of the impurity semiconductor film  6   g  is superposed on the channel protection film  6   d.    
     The impurity semiconductor films  6   f  and  6   g  are formed at the one end of the semiconductor film  6   b  and the other end thereof, respectively, such that the impurity semiconductor films  6   f  and  6   g  are separated from each other. The impurity semiconductor films  6   f  and  6   g  are n-type semiconductors, but not limited thereto. For example, the impurity semiconductor films  6   f  and  6   g  may be p-type semiconductors. 
     The drain electrode  6   h  and the source electrode  6   i  are formed on the impurity semiconductor films  6   f  and  6   g , respectively. The drain electrode  6   h  and the source electrode  6   i  are composed of, for example, Cr films, Al films, Cr/Al laminated films, AlTi alloy films, or AlTiNd alloy films, respectively. 
     The interlayer insulating film  12  which becomes a protection film is deposited on the channel protection film  6   d , the drain electrode  6   h , and the source electrode  6   i . The channel protection film  6   d , the drain electrode  6   h , and the source electrode  6   i  are covered with the interlayer insulating film  12 . 
     The driving transistor  6  is covered with the interlayer insulating film  12 . The interlayer insulating film  12  is composed of a silicone nitride or a silicone oxide whose thickness is between 100 nm and 200 nm, for example. 
     The capacitor  7  is disposed between and connected to the gate electrode  6   a  and the source electrode  6   i  of the driving transistor  6 . 
     As shown in  FIG. 14 , one of the two electrodes of the capacitor  7 , an electrode  7   a , is formed between the substrate  10  and the interlayer insulating film  11 . The other of the two electrodes of the capacitor  7 , an electrode  7   b , is formed between the interlayer insulating film  11  and the interlayer insulating film  12 . The electrodes  7   a  and  7   b  face each other across the interlayer insulating film  11 , which is a dielectric substance. Thereby, the capacitor  7  is structured. 
     The signal line  3 , the electrode  7   a  of the capacitor  7 , the gate electrode  5   a  of the switching transistor  5 , and the gate electrode  6   a  of the driving transistor  6  are formed all together by deforming an electronic conducting film, which is deposited all over the surface of the substrate  10 , by photolithography, etching, and the like. 
     The scanning line  2 , the voltage supply line  4 , the electrode  7   b  of the capacitor  7 , the drain electrode  5   h  and the source electrode  5   i  of the switching transistor  5 , and the drain electrode  6   h  and the source electrode  6   i  of the driving transistor  6  are formed all together by deforming an electronic conducting film, which is deposited all over a surface of the interlayer insulating film  11 , by photolithography, etching, and the like. 
     In the interlayer insulating film  11 , a contact hole  11   a  is formed in a region where the gate electrode  5   a  and the scanning line  2  overlap with each other, a contact hole  11   b  is formed in a region where the drain electrode  5   h  and the signal line  3  overlap with each other, and a contact hole  11   c  is formed in a region where the gate electrode  6   a  and the source electrode  5   i  overlap with each other. Contact plugs  20   a  to  20   c  are implanted in the contact holes  11   a  to  11   c , respectively. 
     The gate electrode  5   a  of the switching transistor  5  and the scanning line  2  are electrically connected with each other by the contact plug  20   a . The drain electrode  5   h  of the switching transistor  5  and the signal line  3  are electrically connected with each other by the contact plug  20   b . The source electrode  5   i  of the switching transistor  5  and the electrode  7   a  of the capacitor  7 , and also the source electrode  5   i  of the switching transistor  5  and the gate electrode  6   a  of the driving transistor  6  are electrically connected with each other by the contact plug  20   c . The scanning line  2  and the gate electrode  5   a , the drain electrode  5   h  and the signal line  3 , and the source electrode  5   i  and the gate electrode  6   a  may directly contact with each other, respectively, not via the respective contact plugs  20   a  to  20   c.    
     The gate electrode  6   a  of the driving transistor  6  is connected to the electrode  7   a  of the capacitor  7  so as to be a single unit. The drain electrode  6   h  of the driving transistor  6  is connected to the voltage supply line  4  so as to be a single unit. The source electrode  6   i  of the driving transistor  6  is connected to the electrode  7   b  of the capacitor  7  so as to be a single unit. 
     A plurality of pixel electrodes  8   a  is provided on the substrate  10  with the interlayer insulating film  11  in between, and each of the pixel electrodes  8   a  is formed individually in each pixel P. The pixel electrode  8   a  is a transparent electrode, and is composed of tin-doped indium oxide (ITO), zinc-doped indium oxide, indium oxide (In 2 O 3 ), tin oxide (SnO 2 ), zinc oxide (ZnO), or cadmium-tin oxide (CTO), for example. A part of the pixel electrode  8   a  is superposed on the source electrode  6   i  of the driving transistor  6 , so that the pixel electrode  8   a  is connected to the source electrode  6   i.    
     As shown in  FIGS. 14 and 15 , the interlayer insulating film  12  is formed so as to cover the scanning line  2 , the signal line  3 , the voltage supply line  4 , the switching transistor  5 , the driving transistor  6 , the periphery part of the pixel electrode  8   a , the electrode  7   b  of the capacitor  7 , and the interlayer insulating film  11 . 
     A plurality of opening sections  12   a  is formed in the interlayer insulating film  12  such that each of the opening sections  12   a  exposes the center part of each of the pixel electrodes  8   a . The interlayer insulating film  12  is latticed viewed from above. 
     As shown in  FIGS. 14 and 15 , the banks  13  extend along the signal lines  3 , respectively, and the banks  13  are parallel to each other. Hence, the banks  13  form stripes. Each of the banks  13  is formed such that the bank  13  covers the switching transistor  5  and the driving transistor  6  with the interlayer insulating film  12  in between. 
     Side walls  13   a  of the banks  13  are disposed inside the corresponding opening sections  12   a , respectively. The center part of the pixel electrode  8   a  is exposed between the side walls  13   a  which face each other. 
     Each bank  13  functions as a partition wall, and prevents a liquid body from spreading from a pixel P into another pixel P which is next to the pixel P when a hole injection layer  8   b  or a light-emitting layer  8   c  is formed by a wet method. In the liquid body, a material making the hole injection layer  8   b  or the light-emitting layer  8   c  described below is dissolved or decomposed in a solvent. 
     As shown in  FIGS. 14 and 15 , the EL element  8  includes the pixel electrode  8   a  as a first electrode which acts as the anode, the hole injection layer  8   b  which is a compound film formed on the pixel electrode  8   a , the light-emitting layer  8   c  which is a compound film formed on the hole injection layer  8   b , and a counter electrode  8   d  as a second electrode formed on the light-emitting layer  8   c . The counter electrode  8   d  is a single electrode shared with all the pixels P, and formed without being divided for all the pixels P. 
     The hole injection layer  8   b  is a carrier transfer layer composed of poly(ethylenedioxy)thiophene (PEDOT) which is an electro-conductive polymer and polystyrene sulfonate (PSS) which is a dopant, for example. The hole injection layer  8   b  injects electron holes from the pixel electrode  8   a  into the light-emitting layer  8   c.    
     Each pixel P includes the light-emitting layer  8   c  having a material for emitting light of R, G, or B. The light-emitting layer  8   c  is a carrier transfer layer composed of a polyfluorene derivative light-emitting material or a polyphenylenevinylene derivative light-emitting material, for example. The light-emitting layer  8   c  emits light in response to recombination of electrons supplied from the counter electrode  8   d  and electron holes injected from the hole injection layer  8   b . Therefore, the pixels P emitting the light of R, the pixels P emitting the light of G, the pixels P emitting the light of B are different from each other in the light-emitting material of the light-emitting layer  8   c . The pattern of the pixels P emitting light of R, G, or B is a striped pattern in which the pixels P emitting light of the same color are arranged in a vertical direction. 
     The counter electrode  8   d  is composed of a material whose work function is lower than the work function of the pixel electrode  8   a . The counter electrode  8   d  is a simple substance or an alloy composed of at least one of indium, magnesium, calcium, lithium, barium, and a rare-earth metal, for example. 
     The counter electrode  8   d  is shared with all the pixels P, so that the banks  13  thereof are covered with the counter electrode  8   d  and compound films such as the light-emitting layers  8   c.    
     The hole injection layer  8   b  and the light-emitting layer  8   c  are severally provided between the banks  13  which are next to each other in the direction parallel to the banks  13 , formed in the shape of a belt, and formed without being divided in the direction parallel to the banks  13 . Therefore, the hole injection layer  8   b  and the light-emitting layer  8   c  are not partitioned by each pixel P in the direction parallel to the banks  13 . That is, the hole injection layer  8   b  and the light-emitting layer  8   c  are shared with a plurality of pixel electrodes  8   a  arranged between the banks  13  which are next to each other. On the other hand, the hole injection layer  8   b  and the light-emitting layer  8   c  are partitioned into a plurality of hole injection layers  8   b  and a plurality of light-emitting layers  8   c , respectively, by the banks  13  in the direction which is the orthogonal direction to the banks  13 . 
     The hole injection layer  8   b  and the light-emitting layer  8   c  as carrier transfer layers are laminated on the pixel electrode  8   a  between the side walls  13   a  of the respective banks  13 , the side walls  13   a  located in the opening section  12   a . (See  FIG. 15 .) That is, when a voltage is applied between the pixel electrode  8   a  and the counter electrode  8   d , the hole injection layer  8   b  and the light-emitting layer  8   c  function as carrier transfer layers at a part where the hole injection layer  8   b  and the light-emitting layer  8   c  overlap with the pixel electrode  8   a , and light is emitted at the part of the light-emitting layer  8   c.    
     More specifically, the side walls  13   a  of the banks  13  provided on the interlayer insulating film  12  are formed inside the opening section  12   a.    
     A liquid body including a material making the hole injection layer  8   b  is applied onto the pixel electrode  8   a  sandwiched by the wide walls  13   a  and enclosed by the opening section  12   a , and the substrate  10  including the liquid body is heated so as to dry the liquid body. A compound film which is formed by drying the liquid body becomes the hole injection layer  8   b  which is a first carrier transfer layer. 
     A liquid body including a material making the light-emitting layer  8   c  is applied onto the hole injection layer  8   b  sandwiched by the wide walls  13   a  and enclosed by the opening section  12   a , and the substrate  10  including the liquid body is heated so as to dry the liquid body. A compound film which is formed by drying the liquid body becomes the light-emitting layer  8   c  which is a second carrier transfer layer. 
     The counter electrode  8   d  covers the light-emitting layer  8   c  and the banks  13 . (See  FIG. 15 .) 
     On the EL panel  1 , the pixel electrodes  8   a , the substrate  10 , and the interlayer insulating film  11  are transparent, and the light emitted from each of the light-emitting layers  8   c  radiates through each of the pixel electrodes  8   a , the substrate  10 , and the interlayer insulating film  11 . Therefore, the back surface of the substrate  10  functions as a display surface. 
     Not the back surface of the substrate  10  but the side of the EL panel  1  opposite to the substrate  10  may function as a display surface. In this case, the counter electrode  8   d  is a transparent electrode, and the pixel electrodes  8   a  are reflex electrodes, and the light emitted from each of the light-emitting layers  8   c  radiates through the counter electrode  8   d.    
     The EL panel  1  emits light by being driven as follows. 
     A voltage is applied to the scanning lines  2  in order by the scanning driver in a state where the voltage at a prescribed level is applied to all the voltage supply lines  4 . Thereby, the scanning lines  2  are selected in order. 
     When each scanning line  2  is selected, and a voltage at a level according to a gradation is applied to all the signal lines  3  by the data driver, the switching transistors  5  corresponding to the selected scanning line  2  are turned on. Accordingly, the voltage at the level according to the gradation is applied to the gate electrode  6   a  of each of the driving transistors  6  corresponding to each of the switching transistors  5 . 
     According to the voltage applied to the gate electrode  6   a  of each of the driving transistors  6 , the potential difference between the gate electrode  6   a  and the source electrode  6   i  of each of the driving transistors  6  is determined, and the intensity of the drain-source current of each of the driving transistors  6  is determined accordingly. Each of the EL elements  8  corresponding to each of the driving transistors  6  emits light whose brightness depends on the drain-source current thereof. 
     After that, when the selection of the scanning line  2  is released, the switching transistors  5  are turned off. Consequently, an electric charge according to the voltage applied to the gate electrode  6   a  of each of the driving transistors  6  is stored in each of the capacitors  7 , and the potential difference between the gate electrode  6   a  and the source electrode  6   i  of each of the driving transistors  6  is maintained. 
     Accordingly, each of the driving transistors  6  keeps supplying the drain-source current whose current value is the same as the current value of the drain-source current of each of the driving transistors  6  which is supplied while the scanning line  2  is selected, and the brightness of each of the EL elements  8  is maintained. 
     (6) Manufacturing Method of EL Panel by Using Application Device 
     Next, the manufacturing method of the EL panel by using the application device according to the embodiments of the present invention is described. 
     (6-1) Process Prior to Using Application Device (Mainly Transistor Manufacturing Process) 
       FIG. 16  is a sectional view showing a pixel electrode exposed between banks of the EL panel. 
     First, a gate metal layer is piled up on the substrate  121 , which becomes the plurality of substrates  10 , by spattering. 
     Then, the gate metal layer is patterned by photolithography, etching, and the like. 
     Accordingly, the signal line  3 , the electrode  7   a  of the capacitor  7 , the gate electrode  5   a  of the switching transistor  5 , and the gate electrode  6   a  of the driving transistor  6 , of each pixel P, are formed from the gate metal layer. 
     Next, the interlayer insulating film  11 , which becomes a gate insulating film such as silicone nitride, is piled up by plasma CVD. 
     Then, a contact hole (not shown) which is open on an external connection terminal of each scanning line  2  (for example, an end of the scanning line  2 ) is formed in the interlayer insulating film  11 . The contact hole is used for connecting the scanning line  2  with the scanning driver located at one side of the EL panel  1 . 
     Next, a semiconductor layer such as amorphous silicon which becomes the semiconductor film  6   b  ( 5   b ) and an insulating layer such as silicon nitride which becomes the channel protection layer  6   d  ( 5   d ) are sequently piled up. Thereafter, the insulating layer is patterned by photolithography, etching, and the like. Consequently, the channel protection film.  6   d  ( 5   d ) is formed from the insulating layer. 
     After that, impurity layers which become the impurity semiconductor films  6   f  and  6   g  ( 5   f  and  5   g ) are piled up, and then the impurity layers and the semiconductor layer are sequently patterned by photolithography, etching, and the like. Consequently, the impurity semiconductor films  6   f  and  6   g  ( 5   f  and  5   g ) are formed from the impurity layers, and the semiconductor film  6   b  ( 5   b ) is formed from the semiconductor layer. 
     Then, the contact holes  11   a  to  11   c  are formed by photolithography and etching. Then, the contact plugs  20   a  to  20   c  are formed in the contact holes  11   a  to  11   c , respectively. This step may be omitted. 
     A source-drain metal layer which forms the drain electrode  5   h  and the source electrode  5   i  of the switching transistor  5  and the drain electrode  6   h  and the source electrode  6   i  of the driving transistor  6  is piled up. Then, the source-drain metal layer is patterned. Consequently, the scanning line  2 , the voltage supply line  4 , the electrode  7   b  of the capacitor  7 , the drain electrode  5   h  and the source electrode  5   i  of the switching transistor  5 , and the drain electrode  6   h  and the source electrode  6   i  of the driving transistor  6  are formed from the source-drain metal layer. 
     The switching transistor  5  and the driving transistor  6  are formed as described above. Thereafter, an ITO film is piled up, and then patterned, so that the pixel electrode  8   a  is formed from the ITO film. 
     An insulating layer is deposited by vapor deposition such that the insulating layer covers the switching transistor  5 , the driving transistor  6 , and the like. Thereafter, the insulating layer is patterned by photolithography and etching. 
     Thereby, the plurality of opening sections  12   a  is formed in the insulating layer, and the interlayer insulating film  12  is formed accordingly. Each opening section  12   a  is formed above the center part of each pixel electrode  8   a , and the center part of each pixel electrode  8   a  is exposed in each opening section  12   a.    
     In addition to the plurality of opening sections  12   a , a plurality of contact holes is formed in the interlayer insulating film  12 . Each of the plurality of contact holes is open on the external connection terminal (not shown) of each of the scanning lines  2 , on an external connection terminal of each of the signal lines  3  (for example, an end of each signal line  3 ), which is used for connecting each of the signal lines  3  with the data driver located at one side of the EL panel  1 , or on an external connection terminal of each of the voltage supply lines  4  (for example, an end of each voltage supply line  4 ). 
     Next, the banks  13  which are parallel to each other and form stripes are formed by exposing photosensitive resin such as polyimide after piling up the photosensitive resin. 
     The banks  13  are formed such that the side walls  13   a  of the respective banks  13  are located on the corresponding pixel electrodes  8   a . The banks  13  expose the above-mentioned contact holes (not shown) which are open on the external connection terminals. 
     By the process described above, each of the pixel electrodes  8   a  is exposed in each of the opening sections  12   a  of the interlayer insulating film  12  as shown in  FIG. 16 . A plurality of pixel electrodes  8   a  are exposed in each concave between the banks  13  which form stripes and are next to each other, and the pixel electrodes  8   a  in each concave are arranged parallel to the banks  13 . 
     (6-2) Application Process by Using Application Device 
     In order to apply a liquid which makes carrier transfer layers to the pixel electrodes  8   a , each of which is located between the banks  13 , four application devices  100  ( 100 A) are prepared, for example. 
     The liquid tank  108  of a first application device  100  ( 100 A) is filled with the liquid  120  which includes a material for the hole injection layer  8   b.    
     The liquid tank  108  of a second application device  100  ( 100 A) is filled with the liquid  120  which includes a material for the light-emitting layer  8   c  for emitting red light. 
     The liquid tank  108  of a third application device  100  ( 100 A) is filled with the liquid  120  which includes a material for the light-emitting layer  8   c  for emitting green light. 
     The liquid tank  108  of a fourth application device  100  ( 100 A) is filled with the liquid  120  which includes a material for the light-emitting layer  8   c  for emitting blue light. 
     In the following, a case where the application is performed by using the four application devices  100  ( 100 A) in order is described, but this is not a limit. For example, the application may be performed by using one application device  100  ( 100 A) by appropriately changing the liquid  120  with which the liquid tank  108  is filled. 
     Next, the substrate  121  on which the process prior to using the application device  100  ( 100 A) is performed so that the steps until the step of forming the banks  13  are completed is disposed on the worktable  101  of the first application device  100  ( 100 A). At the time, the substrate  121  is disposed on the worktable  101  such that the direction in which the banks  13  are extended is along the main-scanning direction. 
     Then, the control section  119  controls the massflow controller  109  to set the set flow rate. 
     Next, the supply device  116  and the carriage  105  are operated by the control section  119 . Accordingly, the carriage  105  moves in the main-scanning direction from one end of the moving area thereof, and the liquid  120  is continuously discharged from the nozzle hole  168  of the nozzle head  106 . 
     Then, the discharged liquid  120  is applied between the banks  13  which are next to each other. Consequently, a belt-shaped hole injection layer  8   b  is formed between the banks  13  which are next to each other, and the pixel electrodes  8   a  arranged between the banks  13  which are next to each other are covered with the hole injection layer  8   b.    
     When the carriage  105  reaches the other end of the moving area thereof, the control section  119  stops the carriage  105 . 
     Then, the control section  119  controls the moving device  102 , so that the moving device  102  moves the worktable  101  and the substrate  121  through one pixel in the sub-scanning direction. The control section  119  stops the moving device  102  thereafter. 
     Next, the control section  119  operates the carriage  105 . Accordingly, the carriage  105  moves the other way around in the main-scanning direction, and the liquid  120  is continuously discharged from the nozzle hole  168  of the nozzle head  106 , so that a belt-shaped hole injection layer  8   b  is formed. 
     When the carriage  105  reaches the one end of the moving area thereof, the control section  119  stops the carriage  105 . Then, the control section  119  controls the moving device  102 , so that the moving device  102  moves the worktable  101  and the substrate  121  through one pixel in the sub-scanning direction. The control section  119  stops the moving device  102  thereafter. 
     After that, the control section  119  repeats controlling the carriage  105  and the moving device  102 , and controlling the supply device  116  and the massflow controller  109 . 
     Accordingly, the carriage  105  repeatedly moves from end to end of the moving area thereof while the liquid  120  is continuously discharged from the nozzle hole  168  of the nozzle head  106 . Also, each time the carriage reaches an end (the one end or the other end) of the moving area thereof, the moving device  102  moves the worktable  101  and the substrate  121  through a prescribed distance in the sub-scanning direction. 
     As a result, the liquid  120  discharged from the nozzle head  106  is applied onto the substrate  121  in a pattern which looks as if a kudzu vine is folded. (See  FIG. 8 .) 
     In such a way described above, all the pixel electrodes  8   a  on the substrate  121  are covered with the hole injection layers  8   b.    
     After drying the hole injection layers  8   b , the substrate  121  is disposed on the worktable  101  of the second application device  100  ( 100 A). 
     Belt-shaped light-emitting layers  8   c  for emitting red light are formed on the hole injection layers  8   b  by the second application device  100  ( 100 A) performing the application in the way as described above. 
     The moving device  102  intermittently moves the worktable  101  and the substrate  121  in the sub-scanning direction. The moving distance is for three pixels. 
     As a result, a light-emitting layer  8   c  for emitting red light is formed in the main-scanning direction every three rows. 
     Next, the substrate  121  is disposed on the worktable  101  of the third application device  100  ( 100 A). 
     Belt-shaped light-emitting layers  8   c  for emitting green light are formed on the hole injection layers  8   b  by the third application device  100  ( 100 A) performing the application in the way as described above. 
     The moving device  102  intermittently moves the worktable  101  and the substrate  121  in the sub-scanning direction. The moving distance is for three pixels. 
     As a result, a light-emitting layer  8   c  for emitting green light is formed in the main-scanning direction every three rows. 
     Next, the substrate  121  is disposed on the worktable  101  of the fourth application device  100  ( 100 A). 
     Belt-shaped light-emitting layers  8   c  for emitting blue light are formed on the hole injection layers  8   b  by the fourth application device  100  ( 100 A) performing the application in the way as described above. 
     The moving device  102  intermittently moves the worktable  101  and the substrate  121  in the sub-scanning direction. The moving distance is for three pixels. 
     As a result, a light-emitting layer  8   c  for emitting blue light is formed in the main-scanning direction every three rows. 
     In such a way as described above, the light-emitting layers  8   c  are formed on all of the hole injection layers  8   b.    
     (6-3) Process after Using Application Device 
     Next, the counter electrode  8   d  is deposited on the substrate  121  on which the light-emitting layers  8   c  are formed, and the light-emitting layers  8   c  and the banks  13  are covered with the counter electrode  8   d.    
     The plurality of the EL panels  1  is completed by cutting and dividing the substrate  121  into the plurality of substrates  10 . 
     As described above, the EL panel  1  manufactured by using the application device  100  ( 100 A) is used as a display panel for various electronic devices, for example. 
     For example, the EL panel  1  can be used as a display panel  1   a  of a cell phone  200  shown in  FIG. 17 , a display panel  1   b  of a digital camera  300  shown in  FIGS. 18A and 18B , and a display panel  1   c  of a personal computer  400  shown in  FIG. 19 . 
     The application of the present invention is not limited to the embodiments described above, and various modifications may be made without departing from the spirit or scope of the present invention. 
     Japanese Patent Application No. 2009-197696 filed on Aug. 28, 2009, the entire disclosure of which, including the description, claims, drawings, and abstract, is incorporated herein by reference in its entirety. 
     Although various representative embodiments are shown and described above, the present invention is not limited to the embodiments. The scope of the present invention is limited only by claims which follow.