Abstract:
A substrate with plane patterns formed in a liquid process wherein the plane patterns are formed based on a combination of plane shapes by which a difference in internal pressure of a solution between any two points of the solution is small, the solution being ejected onto the substrate so as to form the plane patterns by the liquid process.

Description:
FIELD OF THE INVENTION  
       [0001]     The present invention relates to a substrate constituting a flat panel type display device and having plane patterns formed thereon, and a display device using the substrate, and particularly relates to a substrate in which plane patterns of scanning lines, video lines, source electrodes, semiconductor layers, pixel electrodes, etc. in a display panel constituting a flat panel type display device such as a liquid crystal display device or an organic EL display device are formed in a liquid process such as an inkjet method, and a display device using the substrate.  
       BACKGROUND OF THE INVENTION  
       [0002]     For example, in a flat panel type display device such as a liquid crystal display device or an organic EL display device, a display panel constituting the display device has a display region in which a large number of pixels are arrayed in a matrix on a substrate. An active matrix display panel is used broadly as the display panel. In the active matrix display panel, TFT (Thin Film Transistor) devices are provided as switching devices for the pixels arrayed in the display region respectively. Here, a liquid crystal display device will be described as a typical example of such a flat panel type display device.  
         [0003]     A display panel constituting an active matrix liquid crystal display device (hereinafter referred to as “liquid crystal panel”) has plane patterns on an opposed surface or opposed surfaces of one or both of a pair of insulating substrates preferably made of glass. A liquid crystal layer is sandwiched between the opposed substrates. TFT devices, pixel electrodes for display, electrodes for applying scanning signals or video signals to the TFT devices, scanning signal lines for transmitting the scanning signals, video signal lines for transmitting the video signals, terminal portions for connecting these signal lines to external drive circuits, etc. are formed on one of the substrates (TFT substrate).  
         [0004]     A color filter, a black matrix and an opposed electrode are formed on the other substrate (CF (Color Filter) substrate). There are some available display systems such as a TN (Twisted Nematic) system in which an electric field substantially perpendicular to the liquid crystal sandwiched between the plane patterns of the opposed substrates (also referred to as “vertical electric field”) is applied for display, an IPS (In-Plane Switching) system in which a lateral electric field substantially parallel to the plane patterns is applied for display, etc.  
         [0005]     The scanning signal lines, the scanning signal electrodes, the terminal portions for connecting the scanning signal lines with an external drive circuit, the video signal lines, the video signal electrodes, the terminal portions for connecting the video signal lines to an external drive circuit, etc., which are used in the active matrix liquid crystal device, are generally produced as plane patterns by patterning a conductive thin film material such as metal. In the background art, the plane patterns are produced in the following manner. That is, a thin film of metal or the like is formed all over the surface of a substrate in a film forming method such as a sputtering method or a vapor deposition method, and the thin film is processed into a desired shape in a photolithographic process or an etching process.  
         [0006]     In addition to the aforementioned background-art technique, there has been proposed a technique for forming plane patterns of wiring or the like in a liquid process using an inkjet apparatus or the like. According to this forming method, the throughput can be improved on a large scale while the cost can be reduced. For example, when wiring patterns are to be formed in a liquid process, ink of a solvent mixed with metal is ejected only to portions where the wiring patterns should be formed. After that, the solvent is evaporated by heat applied thereto, and sintering is performed. Thus, desired wiring patterns can be obtained.  
         [0007]     When such a liquid process is used, the photolithographic process and the etching process are dispensable so that the number of processes can be reduced. Since patterns can be formed only in necessary portions due to the liquid process, the cost of materials can be also suppressed so that the cost can be reduced. In addition, the film thickness can be increased without lowering the throughput, so that the resistance of wiring can be lowered easily. Further, since etchant such as acid or alkali to be used in an etching process is dispensable, the load on environment can be also reduced.  
         [0008]     As a background-art technique relating to patterning of wiring or the like using an inkjet method which is a typical liquid process technique, JP-A-2000-353594 discloses a film forming technique in which banks are built up on a substrate so as to form grooves in the substrate surface, and the grooves are filled with a thin film material liquid in an inkjet method so as to form a thin film.  
         [0009]     According to the inkjet method, a solution including pigment or the like (hereinafter referred to as “ink”) is ejected from nozzles so as to drop onto a substrate to thereby form patterns. The ink is dried or fired to be hardened. Thus, desired patterns can be obtained. Just after the ink lands on the substrate, the ink shows behavior like liquid due to a solvent included therein. When the liquid is dropped onto the substrate, the liquid flows to make its internal pressure constant and reduce its surface area, so that plane patterns are changed. Thus, some kind of pattern is formed into a shape different from a desired shape of the pattern. The fact that the pattern has a shape different from a desired shape means that there occurs an abnormal pattern. For example, liquid may overflow in a tail portion of a pattern, liquid may overflow in a part of a linear pattern, liquid may overflow in a bent portion, or the film thickness may vary due to the shape of a pattern.  
       SUMMARY OF THE INVENTION  
       [0010]     It is an object of the present invention to provide a substrate with high-precision plane patterns by which occurrence of an abnormal pattern is reduced or prevented in any pattern formed in a liquid process such as an inkjet method, and a display device using the substrate.  
         [0011]     The present invention is characterized in that the plane patterns are formed based on a combination of plane shapes by which a difference in internal pressure of liquid ejected onto a substrate between any two points of the liquid is small, and the surface area of the liquid is reduced.  
         [0012]     As for the behavior of droplets dropped onto the substrate, description will be made below about occurrence of an abnormal pattern caused by a flow of the liquid due to a difference in internal pressure of the dropped droplets, and occurrence of an abnormal pattern caused by a flow of the liquid due to stability of the surface energy. First, the internal pressure of the liquid will be described with reference to  FIG. 24 .  
         [0013]      FIG. 24  is a diagram for explaining the internal pressure of liquid. Internal pressure Pz of liquid  500  shown in  FIG. 24  at the point Z of the liquid  500  can be expressed by the following expression (1) when γ L  designates the surface tension of the liquid, Rx designates the curvature radius of the liquid on a plane including an axis x and the point Z, and Ry designates the curvature radius of the liquid on a plane perpendicular to the aforementioned plane. 
   P   Z =γ L (1 /R   x +1 /R   y )=γ L   ·C   (1)         where C designates a curvature          
         [0015]     The liquid flows so that the internal pressure of the liquid shown in the aforementioned expression (1) becomes equal between any two points of the surface of the liquid. Thus, the shape of the liquid is changed. Since the surface tension γ L  has a value proper to the liquid, the curvature C changes to relax the internal pressure of the liquid. Specifically, the curvature C is reduced in a site where the internal pressure is high. On the contrary, the curvature C is increased in a site where the internal pressure is low. As a result, there occurs an abnormal pattern different from a desired pattern. Based on the aforementioned fact, the internal pressures of the liquid at points are compared with one another with reference to  FIGS. 25A-25C  when a scanning line pattern of a display panel is formed by way of example.  
         [0016]      FIGS. 25A-25C  are diagrams for explaining an example of a plane pattern of a scanning line of a display panel formed by a photolithographic process and an etching process on a metal film formed in a sputtering method.  FIG. 25A  shows the plane pattern of the scanning line.  FIGS. 25B and 25C  are comparative tables of internal pressures of liquid in feature points of the plane pattern of the scanning line in  FIG. 25A . Points a to m in  FIG. 25A  are feature points for comparing internal pressures of liquid of a scanning line  101  with one another.  
         [0017]     The scanning line  101  can be divided into a terminal portion  103 , a scanning signal line  102  and a terminal portion  106 . Further, the scanning signal line  102  involves a scanning signal electrode  104  and a crossing portion  105 . The terminal portion  103  is formed in at least one end portion of one scanning line  101  so as to connect with an external drive circuit. The pattern width of the terminal portion  103  is generally formed to be wider than the width of the scanning signal line  102 . The scanning signal line  102  is a line through which a signal applied from the terminal portion  103  is transmitted to the scanning signal electrode  104 . The scanning signal line  102  occupies a major part of the scanning line.  
         [0018]     A thin film transistor (TFT) is formed above the scanning signal electrode  104 . A voltage for turning ON/OFF the TFT is applied to the scanning signal electrode  104 . Such scanning signal electrodes  104  are disposed at even intervals correspondingly to TFTs existing in a lateral direction (extending direction of the scanning signal line  102 ). The width and length of each scanning signal electrode  104  depends on the dimensions of each TFT to be manufactured.  
         [0019]     The crossing portion  105  is disposed to reduce the capacitance with a video signal line formed above the scanning signal electrode. Such crossing portions  105  a real so disposed at even intervals correspondingly to the TFTs existing in the lateral direction. The width of each crossing portion  105  is generally made as narrow as possible because the crossing portion  105  is provided to reduce the capacitance. The length of the crossing portion  105  depends on the line width of the video signal line and the alignment accuracy of photolithography. The terminal portion  106  is a literal portion corresponding to the terminal of the scanning signal line  102 . The width of the terminal portion  106  is generally equal to that of the scanning signal line  102 .  
         [0020]     Each feature point shown in  FIG. 25A  is a point defined to evaluate the internal pressure of the liquid. As for the feature of each point, a point a is at the center of the terminal portion  103 ; a point b is in a pattern boundary of the terminal portion  103 ; a point c is in a corner of the terminal portion  103 ; a point d is a corner of a connection portion between the terminal portion  103  and the scanning signal line  102 ; a point e is at the center of the scanning signal line  102 ; a point f is in a surface opposed to a portion where the scanning signal electrode  104  is connected; a point g is in a corner of a connection portion between the scanning signal line  102  and the scanning signal electrode  104 ; a point h is at the center of the scanning signal electrode  104 ; a point i is in a corner of the scanning signal electrode  104 ; a point j is in a corner of a convex portion of a connection portion between the scanning signal line  102  and the crossing portion  105 ; a point k is in a corner of a concave portion of the connection portion between the scanning signal line  102  and the crossing portion  105 ; a point l is in a pattern boundary of the crossing portion  105 ; and a point m is in a pattern boundary of the terminal portion  106  of the scanning signal line  102 . The internal pressure of the liquid at each of these points will be evaluated.  
         [0021]     When the pattern shown in  FIGS. 25A-25C  is formed out of liquid, the internal pressures of the liquid at the feature points are compared with the internal pressure of the liquid at the feature point e. As shown in  FIGS. 25B and 25C , the internal pressures are evaluated as follows. 
        liquid internal pressure higher than that at feature point e: c, h, i, j, l, m     liquid internal pressure equal to that at feature point e: f     liquid internal pressure lower than that at feature point e: a, b, d, g, k 
 
 Thus, the liquid flows to relax the internal pressure difference of the liquid. 
       
 
         [0025]      FIG. 26  is a diagram for explaining a scanning line plane pattern  303  just after the liquid is ejected and a scanning line plane pattern  304  deformed due to a flow of the liquid caused by an internal pressure difference of the liquid. The scanning line plane pattern  304  deformed due to a flow of the liquid caused by an internal pressure difference of the liquid changes in accordance with its regions as follows. 
        terminal portion  103 : Pattern width is narrowed, and corner portions expand outside.     scanning signal electrode  104 : Pattern width changes to be wider, and corner portions expand outside.     crossing portion  105 : Pattern width changes to be wider, and becomes equal to the width of the scanning signal line  102 .     terminal portion  106 : Pattern width changes to be wider, and corner portions expand outside.          
         [0030]     Therefore, when a plane pattern is formed in a liquid process such as an inkjet method, an abnormal pattern may occur if a plane pattern to be used for forming wiring in a sputtering method or the like is used as it is. Thus, it is likely that stability in manufacturing cannot be secured. In order to secure stability in manufacturing, it is essential to apply a plane pattern by which the difference in internal pressure of the liquid among the feature points can be reduced or eliminated.  
         [0031]     Next, occurrence of an abnormal pattern caused by a flow of liquid due to the stability of surface energy of the liquid will be described with reference to  FIG. 27 .  FIG. 27  is a diagram for explaining a linear pattern  305  just after liquid is ejected and a linear pattern  306  deformed due to a flow of the liquid caused by the stability of the surface energy. Compare the surface energy of the deformed linear pattern  306  with that of the linear pattern  305  obtained just after the ejection. The surface energy of the deformed linear pattern  306  becomes lower than that of the linear pattern  305  when the wavelength λ of the deformed linear pattern  306  satisfies the following expression (2). 
 
λ&gt;πD 
 
 This is known as Rayleigh-Plateau instability. The liquid is deformed from the linear pattern  305  to the linear pattern  306  so as to have a stable shape. It is known that the wavelength k of the deformed linear pattern  306  is apt to be: 
 
λ√{square root over (2)}πD  (3) 
 
         [0032]     Therefore, when a pattern is formed in a liquid process such as an inkjet method, an abnormal pattern may occur if a plane pattern to be used for forming wiring in a sputtering method or the like is used as it is. Thus, there is a fear that stability in manufacturing cannot be secured. In order to secure stability in manufacturing, it is essential to apply a plane pattern by which the surface energy of each droplet is minimized.  
         [0033]     That is, a substrate with plane patterns formed using a liquid process according to the present invention is characterized in that the plane patterns are formed based on a combination of plane shapes by which a difference in internal pressure of liquid (solution of a pattern forming material) ejected onto a substrate so as to form the plane patterns is small between any two points of the liquid. The plane shapes are formed based on plane shapes by which the surface area of the liquid is minimized.  
         [0034]     According to the present invention, in wiring patterns formed using a liquid process such as an inkjet method, the wiring patterns are formed by a combination of plane patterns by which the internal pressure of the liquid is constant in the plane patterns and the surface area of the liquid is minimized. Thus, it is possible to obtain a substrate in which occurrence of an abnormal pattern at the time of manufacturing is reduced or prevented. A display device (display panel) is constructed using the substrate having the plane patterns as wiring patterns. Thus, it is possible to obtain a low-cost and high-quality display device. 
     
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0035]      FIGS. 1A-1C  are diagrams for explaining Embodiment 1 of the present invention;  
         [0036]      FIGS. 2A-2C  are diagrams for explaining Embodiment 2 of the present invention;  
         [0037]      FIGS. 3A-3C  are diagrams for explaining Embodiment 3 of the present invention;  
         [0038]      FIGS. 4A-4C  are diagrams for explaining Embodiment 4 of the present invention;  
         [0039]      FIGS. 5A-5C  are diagrams for explaining Embodiment 5 of the present invention;  
         [0040]      FIGS. 6A-6C  are diagrams for explaining Embodiment 6 of the present invention;  
         [0041]      FIGS. 7A-7C  are diagrams for explaining Embodiment 7 of the present invention;  
         [0042]      FIGS. 8A-8C  are diagrams for explaining Embodiment 8 of the present invention;  
         [0043]      FIGS. 9A-9C  are diagrams for explaining Embodiment 9 of the present invention;  
         [0044]      FIGS. 10A-10C  are diagrams for explaining Embodiment 10 of the present invention;  
         [0045]      FIG. 11  is a diagram for explaining Embodiment 11 of the present invention;  
         [0046]      FIG. 12  is a diagram for explaining Embodiment 12 of the present invention;  
         [0047]      FIG. 13  is a diagram for explaining Embodiment 13 of the present invention;  
         [0048]      FIG. 14  is a diagram for explaining Embodiment 14 of the present invention;  
         [0049]      FIG. 15  is an outline view of a liquid crystal display device using wiring formed in an inkjet method;  
         [0050]      FIG. 16  is a schematic circuit diagram of a display portion of the liquid crystal display device shown in  FIG. 15 ;  
         [0051]      FIG. 17  is a plan view of the TFT substrate side of a region A shown in  FIG. 16 ;  
         [0052]      FIG. 18  is a diagram for explaining another plane pattern of a terminal portion of a scanning line formed in an inkjet method;  
         [0053]      FIG. 19  is a diagram for explaining another plane pattern of a terminal portion of a scanning line formed in an inkjet method;  
         [0054]      FIG. 20  is a diagram for explaining another plane pattern of a terminal portion of a scanning line formed in an inkjet method;  
         [0055]      FIG. 21  is a diagram for explaining another plane pattern of a T portion formed in an inkjet method;  
         [0056]      FIG. 22A  is a view for diagrams for explaining design values of a plane pattern and internal pressure values in the plane pattern when the contact angle between each substrate according to Embodiments 1-4 and liquid is set to be 50°;  
         [0057]      FIG. 22B  is a view for diagrams for explaining design values of a plane pattern and internal pressure values in the plane pattern when the contact angle between each substrate according to Embodiments 5-8 and liquid is set to be 50°;  
         [0058]      FIG. 22C  is a view for diagrams for explaining design values of a plane pattern and internal pressure values in the plane pattern when the contact angle between each substrate according to Embodiments 9-10 and liquid is set to be 50°;  
         [0059]      FIG. 23A  is a view for diagrams for explaining design values of a plane pattern and internal pressure values in the plane pattern when the contact angle between each substrate according to Embodiments 1-4 and liquid is set to be 20°;  
         [0060]      FIG. 23B  is a view for diagrams for explaining design values of a plane pattern and internal pressure values in the plane pattern when the contact angle between each substrate according to Embodiments 5-8 and liquid is set to be 20°;  
         [0061]      FIG. 23C  is a view for diagrams for explaining design values of a plane pattern and internal pressure values in the plane pattern when the contact angle between each substrate according to Embodiments 9-10 and liquid is set to be 200;  
         [0062]      FIG. 24  is a diagram for explaining the internal pressure of liquid;  
         [0063]      FIGS. 25A-25C  are diagrams for explaining an example of a plane pattern of a scanning line of a display panel formed by a photolithographic process and an etching process on a metal film formed in a sputtering method;  
         [0064]      FIG. 26  is a diagram for explaining a scanning line plane pattern just after liquid is ejected and a scanning line plane pattern deformed due to a flow of the liquid caused by an internal pressure difference of the liquid; and  
         [0065]      FIG. 27  is a diagram for explaining a linear pattern just after liquid is ejected and a linear pattern deformed due to a flow of the liquid caused by the stability of the surface energy. 
     
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS  
       [0066]     A substrate with plane patterns formed in consideration of the aforementioned behavior of droplets and a display device using the substrate will be described below with reference to their embodiments. In the following embodiments, a substrate with wiring patterns formed by dropping wiring material ink (also referred to as “liquid” or “solution”) by inkjet and a display device using the substrate will be described by way of example. In addition, the following embodiments will be described on the assumption that the contact angle between the substrate and the wiring material ink is 90 degrees (°).  
         [0067]      FIGS. 1A-1C  are explanatory diagrams of Embodiment 1 of the present invention.  FIG. 1A  is a plan view showing a plane pattern of a terminal portion  103  formed in an inkjet method.  FIG. 1B  shows an example of design.  FIG. 1C  is a comparative table of internal pressure of liquid in feature points. A difference between internal pressure of liquid occurring at each feature point a, b of a terminal portion  103  and that at a feature point e of a scanning signal line  102  is caused by the width of the terminal portion  103  wider than the width of the scanning signal line  102 .  
         [0068]     In Embodiment 1, rod-like cut patterns  203  are disposed in the terminal portion  103  so as to form the terminal portion  103  into comb tooth patterns  201 . A width D TH  of each comb tooth pattern  201  is made equal to a width D G  of the scanning signal line  102 . The comb tooth patterns  201  are connected with one another through a comb teeth connection pattern  202  formed vertically. Like each comb tooth pattern  201 , a width D TV  of the comb teeth connection pattern  202  is made equal to the width D G  of the scanning signal line  102 .  
         [0069]     Application of the plane pattern according to Embodiment 1 improves the pressure at the feature point a, b in  FIG. 1A  on a large scale so that the pressure at the feature point a, b is 1.0 time as large as that at the feature point e, as compared with the plane pattern according to the background art in which the former is 0.1 time as large as the latter.  
         [0070]     According to Embodiment 1, the internal pressure of the liquid at the feature point a, b can be made equal to that at the feature point e. It is therefore possible to reduce the occurrence of abnormal patterns at the time of manufacturing due to a difference in internal pressure of the liquid in the terminal portion  103 .  
         [0071]     However, the internal pressure of the liquid at the feature point c increases to be 5.8 times as large as that at the feature point e in the plane pattern according to this embodiment, as compared with the plane pattern according to the background art in which the former is 5.1 times as large as the latter. The internal pressure of the liquid at the feature point d is −4.3 times as large as that at the feature point e both in the plane patterns according to the background art and in the plane patterns according to this embodiment. Thus, the difference in internal pressure of the liquid at the feature point c, d may be not relaxed sufficiently. A method for relaxing the difference in internal pressure of the liquid at the feature point c will be described later in Embodiment 3. On the other hand, a method for relaxing the difference in internal pressure of the liquid at the feature point d will be described later in Embodiments 4-8.  
         [0072]     In the plane pattern according to Embodiment 1, there is another new feature point j′ in the terminal portion  103 . The internal pressure of the liquid at the feature point j′ is lower than that at the feature point e. As a result, the feature point j′ may cause occurrence of an abnormal pattern. A plane pattern to relax the difference in internal pressure of the liquid at the feature point j′ will be shown later in Embodiment 3.  
         [0073]      FIGS. 2A-2C  are explanatory diagrams of Embodiment 2 of the present invention.  FIG. 2A  is a plan view showing a plane pattern in a terminal portion  103  formed in an inkjet method.  FIG. 2B  shows an example of design.  FIG. 2C  is a comparative table of internal pressure of liquid in feature points. The chain line shows a background-art terminal portion plane pattern  301 .  
         [0074]     In Embodiment 2, circular cut patterns  204  are disposed on a square grille in the terminal portion  103 . No pattern is formed in the region of each circular cut pattern  204 . Thus, the terminal portion  103  is formed as a wiring pattern with circular holes made therein. The plane pattern is formed so that a radius r T  of each terminal portion circular cut pattern  204  and an interval s between the terminal portion circular cut patterns  204  are 1.5D G  and 0.8D G  respectively with respect to a width D G  of a scanning signal line  102 .  
         [0075]     The plane pattern according to Embodiment 2 improves the internal pressure of the liquid at the feature point a on a large scale so that the internal pressure of the liquid at the feature point a is 0.8 times as large as that at the feature point e, as compared with that the plane pattern according to the background art in which the former is 0.1 time as large as the latter. In the same manner, the internal pressure of the liquid at the feature point b, the internal pressure of the liquid at the feature point c and the internal pressure of the liquid at the feature point d are improved from 0.1 time to 0.9 times, from 5.1 times to 0.1 time and from −4.3 times to 0.9 times respectively on a large scale.  
         [0076]     According to Embodiment 2, a difference in internal pressure of the liquid between the feature point a, b, c, d and the feature point e can be reduced so that it is possible to reduce the occurrence of abnormal patterns at the time of manufacturing due to the difference in internal pressure of the liquid in the terminal portion  103 .  
         [0077]      FIGS. 3A-3C  are explanatory diagrams of Embodiment 3 of the present invention.  FIG. 3A  is a plan view showing a plane pattern of a bent portion  121  formed in an inkjet method.  FIG. 3B  shows an example of design.  FIG. 3C  is a comparative table of internal pressure of liquid in feature points. The chain line shows a plane pattern  302  near feature points c and j′ in the terminal portion  103  in Embodiment 1.  
         [0078]     A difference in internal pressure of liquid between the feature point c, j′ and the feature point e in the scanning signal line  102  is caused by the discontinuity of a pattern in a corner of the bent portion  121  or a large curvature of the bent portion  121  in spite of the continuity of the pattern. Here, the continuity is defined as that “when a plane pattern is expressed by a function, it is differentiable all over the domain of the function”.  
         [0079]     In Embodiment 3, chamfering  205  is applied to the inner side of the bent portion along a circle A of a radius r A  around an origin O, and chamfering  206  is applied to the outer side of the bent portion along a circle B of a radius r B  around the origin O. The plane pattern is formed so that the radius r A  of the circle A is 2D G  with respect to a width D G  of the scanning signal line  102 . The radius r B  of the circle B is a sum of the radius r A  of the circle A and the width D G  of the scanning signal line  102 . Thus, the radius r B  of the circle B is 3D G .  
         [0080]     Application of the plane pattern according to this embodiment improves the internal pressure of the liquid at the feature point c on a large scale so that the internal pressure of the liquid at the feature point c is 1.2 times as large as that at the feature point e, as compared with Embodiment 1 in which the former is 5.8 time as large as the latter. In the same manner, the internal pressure of the liquid at the feature point j′ is improved from −4.3 times to 0.8 times.  
         [0081]     According to Embodiment 3, a difference in internal pressure of the liquid between the feature point c, j′ and the feature point e can be relaxed so that it is possible to reduce the occurrence of abnormal patterns at the time of manufacturing due to the difference in internal pressure of the liquid in the bent portion  121 .  
         [0082]      FIGS. 4A-4C  are explanatory diagrams of Embodiment 4 of the present invention.  FIG. 4A  is a plan view showing a first plane pattern of a connection portion (hereinafter referred to as “T portion  122 ”) between a scanning signal line  102  and a scanning signal electrode  104  formed in an inkjet method.  FIG. 4B  shows an example of design.  FIG. 4C  is a comparative table of internal pressure of liquid in feature points. The chain line shows a plane pattern  307  of a background-art T portion.  
         [0083]     A difference in internal pressure of liquid between a feature point g and a feature point e in the scanning signal line  102  is caused by the discontinuity of a pattern in a corner of the T portion or a large curvature of the T portion in spite of the continuity of the pattern. On the other hand, a difference in internal pressure of liquid between a feature point h and a feature point e in the scanning signal line  104  is caused by a difference between a width D E  of the scanning signal electrode  104  and a width D G  of the scanning signal line  102 .  
         [0084]     In this embodiment, chamfering  207  is applied to each corner of the T portion along a circle A of a radius r A  around an origin O. In this event, the plane pattern is formed so that the radius r A  of the circle A is 2D G  with respect to the width D G  of the scanning signal line  102 . The width D E  of the scanning signal electrode  104  is made equal to the width D G  of the scanning signal line  102 .  
         [0085]     Application of the plane pattern according to Embodiment 4 improves the internal pressure of the liquid at the feature point g without changing the internal pressure of the liquid at the feature point f, so that the internal pressure of the liquid at the feature point g is 0.0 time as large as that at the feature point e, as compared with the plane pattern according to the background art in which the former is −4.3 time as large as the latter. In the same manner, the internal pressure of the liquid at the feature point h is improved from 2.0 times to 1.0 time.  
         [0086]     According to Embodiment 4, a difference in internal pressure of the liquid between the feature point g, h and the feature point e can be relaxed so that it is possible to reduce the occurrence of abnormal patterns at the time of manufacturing due to the difference in internal pressure of the liquid in the T portion  122 .  
         [0087]      FIGS. 5A-5C  are explanatory diagrams of Embodiment 5 of the present invention.  FIG. 5A  is a plan view showing a first plane pattern of a connection portion (T portion  122 ) between a scanning signal line  102  and a scanning signal electrode  104  formed in an inkjet method.  FIG. 5B  shows an example of design.  FIG. 5C  is a comparative table of internal pressure of liquid in feature points. The chain line shows a plane pattern  307  of a background-art T portion.  
         [0088]     In Embodiment 5, chamfering  207  is applied to each corner of the T portion and a width D E  of the scanning signal electrode  104  is made equal to a width D G  of the scanning signal line  102  in the same manner as in Embodiment 3. In addition to this method, chamfering  208  along a circle C of a radius r c  around an origin O c  is applied to a surface of the T portion opposed to the corners, so as to provide the plane pattern with a concave portion. In addition, a side of the scanning signal line  102  where the concave portion has been formed is formed out of a gentle curved surface. Thus, discontinuity is prevented in the plane pattern. In this event, the plane pattern is formed so that the radius r A  is 2D G  with respect to the width D G  Of the scanning signal line  102 . In the same manner, the plane pattern is formed so that the relations r C =2.0D G , D G ′=0.8D G  and D E =D G  are established.  
         [0089]     Application of the plane pattern according to Embodiment improves the internal pressure of the liquid at the feature point g on a large scale without changing the internal pressure of the liquid at the feature point f, so that the internal pressure of the liquid at the feature point g is 1.0 time as large as that at the feature point e, as compared with the plane pattern according to the background art in which the former is −4.3 time as large as the latter. In the same manner, the internal pressure of the liquid at the feature point h is improved from 2.0 times to 1.0 time.  
         [0090]     According to Embodiment 5, a difference in internal pressure of the liquid between the feature point g, h and the feature point e can be relaxed so that it is possible to reduce the occurrence of abnormal patterns at the time of manufacturing due to the difference in internal pressure of the liquid in the T portion  122 .  
         [0091]      FIGS. 6A-6C  are explanatory diagrams of Embodiment 6 of the present invention.  FIG. 6A  is a plan view showing a plane pattern of a connection portion (T portion  122 ) between a scanning signal line  102  and a scanning signal electrode  104  formed in an inkjet method.  FIG. 6B  shows an example of design.  FIG. 6C  is a comparative table of internal pressure of liquid in feature points. The chain line shows a plane pattern  307  of a background-art T portion.  
         [0092]     In Embodiment 6, chamfering  207  is applied to each corner of the T portion and a width D E  of the scanning signal electrode  104  is made equal to a width D G  of the scanning signal line  102  in the same manner as in Embodiment 3. In addition to this method, a T portion cut pattern  209  of a radius r D  is disposed inside the scanning signal line  102  near the T portion. No wiring is formed in the T portion cut pattern  209 . Thus, the scanning signal line  102  is formed into a wiring pattern in which a circular hole is made in the wiring. In this event, the plane pattern is formed so that the radius r A  is 0.8D G  with respect to the width D G  of the scanning signal line  102 . In the same manner, the plane pattern is formed so that the relations r D =0.8D G , D G ′=0.6D G , D G ″=D G  and D E =D G  are established.  
         [0093]     Application of the plane pattern according to Embodiment 6 improves the internal pressure of the liquid at the feature point g on a large scale without changing the internal pressure of the liquid at the feature point f, so that the internal pressure of the liquid at the feature point g is 1.0 time as large as that at the feature point e, as compared with the plane pattern according to the background art in which the former is −4.3 time as large as the latter. In the same manner, the internal pressure of the liquid at the feature point h is improved from 2.0 times to 1.0 time.  
         [0094]     Due to the application of this embodiment, a difference in internal pressure of the liquid between the feature point g, h and the feature point e can be relaxed so that it is possible to reduce the occurrence of abnormal patterns at the time of manufacturing due to the difference in internal pressure of the liquid in the T portion  122 .  
         [0095]      FIGS. 7A-7C  are explanatory diagrams of Embodiment 7 of the present invention.  FIG. 7A  is a plan view showing a plane pattern of a connection portion (T portion  122 ) between a scanning signal line  102  and a scanning signal electrode  104  formed in an inkjet method.  FIG. 7B  shows an example of design.  FIG. 7C  is a comparative table of internal pressure of liquid in feature points. The chain line shows a plane pattern  307  of a background-art T portion.  
         [0096]     In Embodiment 7, chamfering  207  is applied to each corner of the T portion and a width D E  of the scanning signal electrode  104  is made equal to a width D G  of the scanning signal line  102  in the same manner as in Embodiment 3. In addition to this method, a T portion cut pattern  209  is disposed as described in Embodiment 6. Further, chamfering  208  along a circle D of a radius r D  around an origin O D  is applied to a surface of the T portion opposed to the corners, so as to provide the plane pattern with a convex portion. In addition, a side of the scanning signal line  102  where the convex portion has been formed is formed out of a gentle curved surface. Thus, discontinuity is prevented in the plane pattern. In this event, the plane pattern is formed so that the radius r A  is 0.8D G  with respect to the width D G  of the scanning signal line  102 . In the same manner, the plane pattern is formed so that the relations r D =0.8D G , D G ′=0.6D G , D G =1.12D G  and D E =D G  are established.  
         [0097]     Application of the plane pattern according to Embodiment 7 improves the internal pressure of the liquid at the feature point g on a large scale without changing the internal pressure of the liquid at the feature point f, so that the internal pressure of the liquid at the feature point g is 1.1 time as large as that at the feature point e, as compared with the plane pattern according to the background art in which the former is −4.3 time as large as the latter. In the same manner, the internal pressure of the liquid at the feature point h is improved from 2.0 times to 1.0 time.  
         [0098]     Due to the application of Embodiment 7, a difference in internal pressure of the liquid between the feature point g, h and the feature point e can be relaxed so that it is possible to reduce the occurrence of abnormal patterns at the time of manufacturing due to the difference in internal pressure of the liquid in the T portion  122 .  
         [0099]      FIGS. 8A-8C  are explanatory diagrams of Embodiment 8 of the present invention.  FIG. 8A  is a plan view showing a plane pattern of a connection portion (T portion  122 ) between a scanning signal line  102  and a scanning signal electrode  104  formed in an inkjet method.  FIG. 8B  shows an example of design.  FIG. 8C  is a comparative table of internal pressure of liquid in feature points. The chain line shows a plane pattern  307  of a background-art T portion.  
         [0100]     In Embodiment 8, chamfering  207  is applied to each corner of the T portion as described in Embodiment 3. In addition, a width D E  of the scanning signal electrode  104  is made equal to a width D G  of the scanning signal line  102 , and a T portion cut pattern  209  is disposed as described in Embodiment 6. In addition to these methods, the plane pattern is formed so that a linear pattern  210  of a width D P  is added to a surface of the T portion opposed to the corners. Further, chamfering  207  is applied to each corner of the connection portion between the linear pattern  210  of the opposed surface of the T portion and the scanning signal line  102  in the same manner as the aforementioned chamfering  207  applied to each corner of the T portion. In this event, the plane pattern is formed so that the radius r A  is 0.8D G  with respect to the width D G  of the scanning signal line  102 . In the same manner, the plane pattern is formed so that the relations r D =0.8D G , D G′ =0.6D G , D G ″=0.6D G , D E =D G  and D P =D G  are established.  
         [0101]     Application of the plane pattern according to Embodiment 8 improves the internal pressure of the liquid at the feature point g on a large scale without changing the internal pressure of the liquid at the feature point f, so that the internal pressure of the liquid at the feature point g is 1.0 time as large as that at the feature point e, as compared with the plane pattern according to the background art in which the former is −4.3 time as large as the latter. In the same manner, the internal pressure of the liquid at the feature point h is improved from 2.0 times to 1.0 time.  
         [0102]     According to Embodiment 8, a difference in internal pressure of the liquid between the feature point g, h and the feature point e can be relaxed so that it is possible to reduce the occurrence of abnormal patterns at the time of manufacturing due to the difference in internal pressure of the liquid in the T portion  122 .  
         [0103]     In the plane pattern according to Embodiment 8, there appears another new feature point m′ in a terminal portion of the linear pattern  210  of the opposed surface of the T portion. The internal pressure of the liquid at the feature point m′ is higher than that at the feature point e. As a result, the feature point m′ may cause occurrence of an abnormal pattern. A plane pattern to relax the difference in internal pressure of the liquid at the feature point m′ will be shown later in Embodiment 10.  
         [0104]      FIGS. 9A-9C  are explanatory diagrams of Embodiment 9 of the present invention.  FIG. 9A  is a plan view showing a plane pattern of a crossing portion  105  between a scanning signal line  102  and a scanning signal electrode  104  formed in an inkjet method.  FIG. 9B  shows an example of design.  FIG. 9C  is a comparative table of internal pressure of liquid in feature points. The chain line shows a plane pattern  310  of a background-art crossing portion.  
         [0105]     A difference in internal pressure of liquid between each feature point i, k, l and a feature point e in the scanning signal line  102  is caused by the discontinuity of a pattern in each corner of a connection portion and a width D G ′ of the crossing portion  105  narrower than a width D G  of the scanning signal line  102 .  
         [0106]     In Embodiment 9, a pattern is formed so that chamfering  211  along a circle A of a radius r A  around an origin O A  is applied to each corner of the crossing portion. In addition, a side of the crossing portion  105  where the chamfering has been applied is formed out of a gentle curved surface. Thus, discontinuity is prevented in the pattern. In this event, the plane pattern is formed so that the radius r A  is 1.5D G  with respect to the width D G  of the scanning signal line  102 . It is assumed that a width D G  of the crossing portion  105  is 0.5D G .  
         [0107]     Application of the plane pattern according to Embodiment  9  improves the internal pressure of the liquid at the feature point j on a large scale, so that the internal pressure of the liquid at the feature point j is 1.0 time as large as that at the feature point e, as compared with the plane pattern according to the background art in which the former is 5.8 times as large as the latter. In the same manner, the internal pressure of the liquid at the feature point k is improved from −3.7 times to 1.7 times, and the internal pressure of the liquid at the feature point l is improved from 2.0 times to 1.7 times.  
         [0108]     According to the application of Embodiment 9, a difference in internal pressure of the liquid between the feature point j, k, l and the feature point e can be relaxed so that it is possible to reduce the occurrence of abnormal patterns at the time of manufacturing due to the difference in internal pressure of the liquid.  
         [0109]      FIGS. 10A-10C  are explanatory diagrams of Embodiment 10 of the present invention.  FIG. 10A  is a plan view showing a plane pattern of a terminal portion  106  of a scanning signal line  102  formed in an inkjet method.  FIG. 10B  shows an example of design.  FIG. 10C  is a comparative table of internal pressure of liquid in feature points. The chain line shows a plane pattern  308  of a background-art terminal portion.  
         [0110]     In  FIG. 11A , a difference in internal pressure of liquid between a feature point m and a feature point e in the scanning signal line  102  occurs due to the fact that the terminal portion  106  has a biaxial curvature while the feature point e has a uniaxial curvature.  
         [0111]     In Embodiment 10, a semicircular pattern  212  having a chord length D C  is connected to the terminal portion. The plane pattern is formed so that the scanning signal line  102  and the terminal portion semicircular pattern  212  are connected through a gentle curved surface. Thus, discontinuity is prevented in the plane pattern. In this event, the plane pattern is formed so that the chord length D C  is 2D G  with respect to a width D G  of the scanning signal line  102   
         [0112]     Due to the plane pattern according to Embodiment 10, application of this embodiment improves the internal pressure of the liquid at a feature point m so that the internal pressure of the liquid at the feature point m is 1.0 time as large as that at the feature point e, as compared with the plane pattern according to the background art in which the former is 2.0 times as large as the latter.  
         [0113]     According to the application of the plane pattern of Embodiment 10, a difference in internal pressure of the liquid between the feature point m and the feature point e can be relaxed so that it is possible to reduce the occurrence of abnormal patterns at the time of manufacturing due to the difference in internal pressure of the liquid.  
         [0114]      FIG. 11  is an explanatory diagram of Embodiment 11 of the present invention, showing a first plane pattern of a scanning signal line  102  formed in an inkjet method. The chain line shows a plane pattern  309  of a background-art scanning signal line.  
         [0115]     In Embodiment 11, a plane pattern is beforehand formed into a waved shape which is symmetric with respect to an axis parallel to the extending direction of the scanning signal line  102 . In this event, the plane pattern is formed so that a period λ of waves of the waved shape satisfies λ&lt;πD with respect to an average line width D of the scanning signal line  102 .  
         [0116]     Due to application of the plane pattern according to Embodiment 11, the surface energy can be lowered in comparison with that in the plane pattern  309  of the background-art scanning signal line. Thus, it is possible to suppress the fluidity of the pattern caused by the surface energy.  
         [0117]     According to the application of Embodiment 11, it is possible to suppress the occurrence of abnormal patterns at the time of manufacturing due to the surface energy.  
         [0118]      FIG. 12  is an explanatory diagram of Embodiment 12 of the present invention, showing a second plane pattern of a scanning signal line  102  formed in an inkjet method. In Embodiment 12, a plane pattern is formed so that protrusion portions  213  are provided in parts of the scanning signal line  102 . The protrusion portions  213  are disposed to be symmetric with respect to an axis parallel to the extending direction of the scanning signal line  102 . In this event, the plane pattern is formed so that a period λ of the protrusion portions satisfies λ&lt;πD with respect to an average line width D of the scanning signal line  102 .  
         [0119]     Due to application of the plane pattern according to Embodiment 12, the surface energy can be lowered in comparison with that in the plane pattern  309  of the background-art scanning signal line. Thus, it is possible to suppress the fluidity of the pattern caused by the surface energy.  
         [0120]     According to the application of Embodiment 12, it is possible to suppress the occurrence of abnormal patterns at the time of manufacturing due to the surface energy.  
         [0121]      FIG. 13  is an explanatory diagram of Embodiment 13 of the present invention, showing a sectional shape of a pattern formed in an inkjet method. Embodiment 13 has a structure in which a step  502  is formed on an insulating substrate  501  in each portion where a pattern  503  is absent. The step  502  is formed by patterning after applying an organic film or the like in a spin coat method, or by a printing method or the like. After the step  502  is formed, the pattern  503  is formed by a liquid process such as an inkjet method or the like.  
         [0122]     According to application of the sectional structure of Embodiment 13, there is another effect that liquid can be dammed by the wall of the step, in addition to the effects shown in Embodiments 1-12. Thus, it is possible to reduce the occurrence of abnormal patterns at the time of manufacturing.  
         [0123]     In addition, in Embodiment 13, the contact angle with the liquid on the step  502  is made higher than the contact angle with the liquid on the insulating substrate  501 , so that the effect of damming the liquid can be increased. Thus, it is possible to suppress the occurrence of abnormal patterns more effectively.  
         [0124]      FIG. 14  is an explanatory diagram of Embodiment 14 of the present invention, showing a plane pattern of a scanning line  101  formed in an inkjet method or the like. In Embodiment 14, circular cut patterns  204  are disposed in a terminal portion  103 . Protrusion portions  213  are provided in a scanning signal line  102  so as to be symmetric with respect to an axis parallel to the extending direction of the scanning signal line  102 . Chamfering  207  is applied to each corner of a connection portion between a scanning signal electrode  104  and the scanning signal line  102 , and a terminal portion semicircular pattern  212  is disposed in a terminal portion of the scanning signal electrode  104 . Chamfering  211  is applied to each corner of a crossing portion  105 , and a terminal portion semicircular pattern  212  is disposed in a terminal portion  106 . These patterns are connected through gentle curved surfaces respectively. Thus, the patterns are prevented from being discontinuous.  
         [0125]     According to application of Embodiment 14, a difference in internal pressure of liquid between any two points of the scanning line  101  can be relaxed, and the surface energy can be lowered. Thus, it is possible to suppress occurrence of abnormal patterns at the time of manufacturing.  
         [0126]      FIGS. 15-17  are explanatory diagrams of Embodiment 15 of the present invention.  FIG. 15  is an outline view of a liquid crystal display device  601  using wiring formed in an inkjet method. Scanning lines, video lines, semiconductor layers, and pixel electrodes to which the aforementioned plane patterns shown in Embodiments 1-14 have been applied are used in a display portion  602  of the liquid crystal display device  601 .  
         [0127]      FIG. 16  is a schematic circuit diagram of the display portion  602  of the liquid crystal display device  601  shown in  FIG. 15 . In the liquid crystal display device  601  shown in  FIG. 15 , a plurality of scanning lines  101  are formed horizontally at even intervals. A plurality of video lines  107  are formed at even intervals vertically to the scanning lines  101 . Each of the scanning lines  101  and the video lines  107  is provided in at least one end thereof with a terminal portion  103  for connecting with an external drive circuit. Near a crossing portion  105  between each scanning line  101  and each video line  107 , a thin film transistor (TFT)  110  is disposed as a switching device, which is connected to the scanning signal line  101  through a scanning signal electrode  104  and to the video line  107  through a video signal electrode  109 . One end of the thin film transistor  110  is connected to a pixel electrode  111  through a source electrode  117 . A liquid crystal  113  is sandwiched between the pixel electrode  111  and a common electrode  112 . The liquid crystal  113  is driven by a voltage applied between the pixel electrode  111  and the common electrode  112 .  
         [0128]      FIG. 17  is a plan view of the TFT substrate side of a region A shown in  FIG. 16 . In  FIG. 17 , the plane patterns shown in Embodiments 1-14 are applied to the scanning signal lines  102 , the scanning signal electrodes  104 , the crossing portions  105 , the video signal lines  108 , the video signal electrodes  109 , the semiconductor layers  116 , and the pixel electrodes  111 .  
         [0129]     According to Embodiment 15, it is possible to construct the liquid crystal display device  601  in which occurrence of abnormal patterns is suppressed in the scanning lines  101 , the video lines  107 , the semiconductor layers  116  and the pixel electrodes  111 .  
         [0130]     In addition to the aforementioned embodiments, the following configurations can be applied. First, in the aforementioned Embodiment 1, a plane pattern is formed so that cut patterns are disposed in parallel to a scanning signal line. However, similar effects can be obtained if the cut patterns are disposed perpendicularly to the scanning signal line.  
         [0131]     In Embodiment 1, the cut patterns are formed as rod-like cut patterns. However, the cut patterns may be formed as substantially elliptic cut patterns  214  as shown in  FIG. 18  or as substantially hexagonal cut patterns  215  as shown in  FIG. 19 . Similar effects can be obtained in this case.  
         [0132]     In Embodiment 2, a plane pattern is formed so that terminal portion circular cut patterns  204  are disposed on a square grille. However, the cut patterns  204  may be disposed on a hexagonal grille as shown in  FIG. 20 . Similar effects can be obtained in this case.  
         [0133]     In Embodiment 2, 6, 7 or 8, a cut pattern is formed to be substantially circular. However, the cut pattern may be formed as a substantially octagonal T portion cut pattern  209  as shown in  FIG. 21 . Similar effects can be obtained in this case. In the same manner, occurrence of abnormal patterns can be suppressed if a substantially elliptic cut pattern or a substantially n-sided (n is an integer larger than 3) cut pattern is disposed.  
         [0134]     In Embodiment 3-8, chamfering  207  along a circle A around an origin O A  is applied to each corner of a T portion. However, chamfering may be applied along an octagon AA as shown in  FIG. 21 . Similar effects can be obtained in this case. In the same manner, occurrence of abnormal patterns can be suppressed if substantially elliptic or substantially n-sided (n is an integer larger than 4) chamfering is disposed.  
         [0135]     In Embodiment 3, chamfering  205  along a circle A around an origin O is applied to the inner side of a bent portion while chamfering  206  along a circle B around the origin O is applied to the outer side of the bent portion. However, chamfering may be applied to the bent portion with predetermined curvatures while the center of the circle A does not coincide with the center of the circle B. Similar effects can be obtained in this case.  
         [0136]     In Embodiment 3, chamfering  205  along a circle A around an origin O is applied to the inner side of a bent portion while chamfering  206  along a circle B around the origin O is applied to the outer side of the bent portion. However, without being limited to this configuration, chamfering may be applied along substantially ellipses or substantially n-sided polygons (n is an integer larger than 4) around the origin O. Similar effects can be obtained in this case.  
         [0137]     In Embodiments 5 and 7, chamfering  207  along a circle A around an origin O A  is applied to each corner of a T portion. However, without being limited to this configuration, chamfering may be applied along a substantially ellipse or a substantially n-sided polygon (n is an integer larger than 4) around the origin O A . Similar effects can be obtained in this case.  
         [0138]     In Embodiment 10, a plane pattern is formed so that a terminal portion semicircular pattern  212  is disposed in a terminal portion  106 . However, a shape of half an ellipse or a substantially n-sided polygon (n is an integer larger than 3) may be applied. Similar effects can be obtained in this case.  
         [0139]     In Embodiments 1-10, effects of the present invention have been described with specific numerical values. These values are calculated on the assumption that the contact angle of the substrate with respect to the liquid is 90°. The design values will change if the contact angle of the substrate with respect to the liquid changes.  
         [0140]      FIGS. 22A, 22B  and  22 C are views for explanatory diagrams of design values of plane patterns and internal pressure values in the plane patterns on the assumption that the contact angle of the substrate with respect to the liquid is 50° in Embodiments 1 to 10.  FIGS. 23A, 23B  and  23 C are views for explanatory diagrams of design values of plane patterns and internal pressure values in the plane patterns on the assumption that the contact angle of the substrate with respect to the liquid is 20° in Embodiments 1 to 10. As is understood from  FIGS. 22A, 22B ,  22 C,  23 A,  23 B and  23 C, a difference in internal pressure of the liquid can be relaxed by optimum design even when the contact angle of the substrate with respect to the liquid changes. Thus, occurrence of abnormal patterns can be suppressed.  
         [0141]     In Embodiments 1 and 2, description has been made about the shape of the terminal portion  103 . Without being limited to the terminal portion  103 , Embodiments 1 and 2 may be applied to any plane pattern in which a substantially linear pattern and a substantially quadrangular pattern wider than the substantially linear pattern are formed on an insulating substrate, and a short side of the substantially linear pattern is connected to a part of a side of the substantially quadrangular pattern.  
         [0142]     In Embodiment 3, description has been made about the shape of a part of the terminal portion  103  as a site where the bent portion  121  is formed. Without being limited to a part of the terminal portion  103 , Embodiment 3 may be applied to any plane pattern in which a substantially linear pattern  1  and a substantially linear pattern  2  are formed on an insulating substrate, and a short side of the substantially linear pattern  1  is connected to an end portion of along side of the substantially linear pattern  2  so as to form an L-shaped bent portion.  
         [0143]     Further, in Embodiments 4, 5, 6, 7 and 8, description has been made about a connection portion between the scanning signal line  102  and the scanning signal electrode  104 . Without being limited to the connection portion between the scanning signal line  102  and the scanning signal electrode  104 , Embodiments 4, 5, 6, 7 and 8 may be applied to any plane pattern in which a substantially linear pattern  1  and a substantially linear pattern  2  are formed on an insulating substrate, and a short side of the substantially linear pattern  1  is connected to a part of a long side of the substantially linear pattern  2  so as to form a T shape.  
         [0144]     Furthermore, in Embodiment 9, description has been made about the shape of the crossing portion  105 . Without being limited to the crossing portion  105 , Embodiment 9 may be applied to any plane pattern in which a substantially linear pattern  1 , a substantially linear pattern  2  having a short side length equal to that of the substantially linear pattern  1  and a substantially linear pattern  3  having a short side length shorter than that of any one of the substantially linear patterns  1  and  2  are formed on an insulating substrate, while a part of a short side of the substantially linear pattern  1  is connected to a short side  1  of the substantially linear pattern  3 , and the other short side  2  of the substantially linear pattern  3  is connected to a part of a short side of the substantially linear pattern  2 .  
         [0145]     In Embodiment 10, description has been made about the terminal portion  106  of the scanning signal line  102 . Without being limited to the terminal portion  106  of the scanning signal line  102 , the plane pattern according to Embodiment 10 may be applied to any longitudinal terminal portion of a substantially linear pattern  1 .  
         [0146]     Furthermore, in Embodiments 11 and 12, description has been made about the shape of the scanning signal line  102 . However, without being limited to the scanning signal line  102 , the plane patterns according to Embodiments 11 and 12 may be applied to any substantially linear pattern.  
         [0147]     In Embodiment 13, description has been made about the case where a plane pattern according to Embodiments 2, 4, 10 and 12 is applied to the scanning signal line  102 . Similar effects can be obtained when at least one of the plane patterns according to Embodiments 1 to 12 is applied.  
         [0148]     Further, in Embodiment 16, description has been made about the case in which patterns according to Embodiments 1 to 15 are applied to a liquid crystal display device. Without being limited to the liquid crystal display device, the plane patterns may be applied to any case in which patterns of a display device such as an organic LED display device or a PDP display device or patterns of a printed circuit board or the like are formed by use of a liquid process.