Abstract:
Disclosed herein are a transparent electronic display board and a method for manufacturing the same. The transparent electronic display board displays text, images, or videos by means of switching on or off a plurality of light emitting elements installed on transparent electrodes. The transparent electronic display board is configured such that wiring of the light emitting elements is effectively formed. Therefore, the number of assembly processes and the level of difficulty in manufacture thereof can be reduced, allowing for improved productivity.

Description:
CROSS REFERENCE TO RELATED APPLICATIONS AND CLAIM OF PRIORITY 
       [0001]    This patent application claims benefit under 35 U.S.C. 119(e), 120, 121, or 365(c), and is a National Stage entry from International Application No. PCT/KR2012/010103, filed 27 Nov. 2012, which claims priority to Korean Patent Application No. 10-2012-0078116, filed 18 Jul. 2012, entire contents of which are incorporated herein by reference. 
     
    
     BACKGROUND 
       [0002]    1. Technical Field 
         [0003]    The present invention generally relates to transparent electronic display boards and methods of manufacturing the same. More particularly, the present invention relates to a transparent electronic display board that displays text, images, or videos by means of switching on or off a plurality of light emitting elements installed on transparent electrodes, wherein the transparent electronic display board is configured such that wiring of the light emitting elements is effectively formed, whereby the number of assembly processes and the level of difficulty in manufacture can be reduced, thus improving productivity. 
         [0004]    2. Background Art 
         [0005]    Generally, light emitting devices such as neon lamps, cold cathode lamps (CCLs), light emitting diodes (LEDs), etc. are widely used in outdoor electronic display boards. External electrode fluorescent lamps (EEFLs), cold cathode fluorescent lamps (CCFLs), LED electronic displays, etc. are used as indoor light emitting devices. 
         [0006]    Neon lamps or CCLs use high voltage power and thus have disadvantages including high power consumption, risk of electric shock or fire, and short lifetimes. On the other hand, EEFLs or CCFLs have problems with being used outdoors because they use high frequency. Furthermore, EEFLs or CCFLs have disadvantages including low intensity of illumination and short lifetimes. 
         [0007]    Electronic display boards using LEDs are characterized in that light is emitted in one direction because a rear surface of the board that is opposed to a light emitting surface is covered with a cover for arrangement of wires or black background treatment. 
         [0008]    Recently, light emitting devices are used not only as lighting, but also as advertising signboards or interior decorations for beauty. 
         [0009]    However, the above-mentioned light emitting devices are limited in enhancing aesthetic effects because of the size of a lamp or the size of a stand for supporting a light emitting device. 
         [0010]    To enhance aesthetic effects, transparent electronic display boards were introduced, in which a plurality of light emitting elements provided on transparent electrodes emits light and thus displays text or a figure on the transparent electrode and plays a video using a controller. In such a transparent electronic display board, a plurality of light emitting elements is wired on transparent electrodes. Typically, light emitting elements each having two, three, or four electrodes are used. Of conventional transparent electronic display boards, a wiring diagram of a transparent electronic display board having four-electrode light emitting elements is illustrated in  FIG. 1 . 
         [0011]      FIG. 1  is a wiring diagram showing a conventional transparent electronic display board. 
         [0012]    Referring to  FIG. 1 , the conventional transparent electronic display board includes: a plurality of light emitting elements  1  that is adhered between transparent plates facing each other by transparent resin; transparent electrodes  2   a  through  2   d  that are applied to either of transparent plates and are respectively connected to electrodes of the light emitting element to supply power to the light emitting element; and conductive tape  2   a ′ through  2   d ′ supplying power to the transparent electrodes  2   a  through  2   d.    
         [0013]    Each light emitting element  1  comprises a four-electrode light emitting element  1 . In detail, the light emitting element  1  includes a single cathode electrode and three anode electrodes that are respectively connected to the transparent electrodes  2   a  through  2   d  extending from the transparent conductive tapes  2   a ′ through  2   d ′. The light emitting elements  1  are aligned in rows with respect to the vertical direction. A plurality of rows of light emitting elements  1 , in each of which the light emitting elements  1  are aligned with each other in the vertical direction, are provided. 
         [0014]    The transparent electrodes  2   a  through  2   d  extend from opposite ends of the transparent plate and are respectively connected to the anode electrodes and the cathode electrode of the corresponding four-electrode light emitting element  1 . The transparent electrodes  2   a  through  2   d  are separated and insulated from each other such that they do not make contact with each other. 
         [0015]    Furthermore, the transparent electrodes  2   a  through  2   d  are configured such that they successively extended from the opposite ends of the transparent plate to the light emitting elements  1  aligned with each other on the central portion of the transparent plate. That is, the first transparent electrode  2   a , which is connected to the cathode electrode to function as a ground terminal, and the second through fourth transparent electrodes  2   b  through  2   d , which are connected to the respective anode electrodes, are successively provided. The fifth through seventh transparent electrodes  2   e  through  2   g  connected to the corresponding anode electrodes are successively provided next to the fourth transparent electrodes  2   d . Another first transparent electrode connected to the cathode electrodes of other light emitting elements is provided next to the seventh transparent electrode. That is, in the conventional technique, the sixth through eighth transparent electrodes  2   f  through  2   h  connected to the anode electrodes are formed. 
       SUMMARY 
       [0016]    However, in the conventional transparent electronic display board, the number of transparent electrodes that are connected to the cathode electrodes of the light emitting elements and function as ground terminals must be changed depending on the number of light emitting elements arranged in the vertical or horizontal direction. Therefore, the number of manufacturing processes becomes comparatively large, whereby production costs are increased, and productivity is reduced. 
         [0017]    Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a transparent electronic display board configured such that a transparent electrode for cathode electrodes is connected as a common electrode to cathode electrodes of four-electrode light emitting elements. This reduces the number of processes for connecting the transparent electrode to the light emitting elements, whereby manufacturing times can be reduced, and productivity can be enhanced. 
         [0018]    In a transparent electronic display board according to the present invention, a transparent electrode for cathode electrodes is connected in common to cathode electrodes of a plurality of light emitting elements. As such, a design for wiring transparent electrodes connected to the light emitting element can be simplified. Therefore, the number of processes can be reduced, and productivity can be enhanced. 
     
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         [0019]      FIG. 1  is a view showing a conventional transparent electronic display board. 
           [0020]      FIG. 2  is a view illustrating a transparent electronic display board according to the present invention. 
           [0021]      FIG. 3  is a view showing the wiring of transparent electrodes in the transparent electronic display board according to the present invention. 
           [0022]      FIG. 4  is an enlarged view of  FIG. 3 . 
           [0023]      FIG. 5  is a flowchart showing a method of manufacturing the transparent electronic display board according to the present invention. 
           [0024]      FIG. 6  is a view showing another embodiment of the transparent electronic display board according to the present invention. 
           [0025]      FIG. 7  is an enlarged view of portion ‘B’ of  FIG. 6 . 
       
    
    
     DETAILED DESCRIPTION 
       [0026]    In a first embodiment of the present invention, a transparent electronic display board includes: a pair of transparent plates spaced apart from each other and bonded to each other by transparent resin charged into a space between the transparent plates; one or more light emitting elements fastened to any one selected from between the transparent plates; transparent electrodes formed on the selected transparent plate, the transparent electrodes being electrically connected to anode electrodes and cathode electrodes of the light emitting elements; and transparent conductive tape adhered to each of the transparent electrodes on one edge of the transparent plate, the transparent conductive tape supplying power to the corresponding transparent electrode. Each of the light emitting elements includes one or more anode electrodes. The transparent electrodes comprise one or more anode connection electrodes respectively connected to the anode electrodes, and a cathode connection electrode connected in common to the cathode electrodes formed on the respective light emitting elements. 
         [0027]    In a second embodiment of the present invention, the cathode connection electrode and the anode connection electrodes may respectively include connection terminals successively extending from on at least one of an upper, lower, left and right edges of the transparent plates, the connection terminals being connected to the corresponding transparent conductive tape. Of the connection terminals, the connection terminal of the cathode connection electrode may be disposed at an uppermost position. The connection terminals of the anode connection electrodes may be successively disposed below the connection terminal of the cathode connection electrode. 
         [0028]    In a third embodiment of the present invention, the cathode connection electrode and the anode connection electrodes may respectively include connection terminals successively extending from on at least one of an upper, lower, left and right edges of the transparent plates, the connection terminals being connected to the corresponding transparent conductive tape. Of the connection terminals, the connection terminal of the cathode connection electrode may be disposed at a lowermost position. The connection terminals of the anode connection electrodes may be successively disposed below the connection terminal of the cathode connection electrode. 
         [0029]    In a fourth embodiment of the present invention, the anode connection electrodes may be respectively connected to the anode electrodes of each of the light emitting elements. At least one of the anode connection electrodes may be spaced apart from another of the anode connection electrodes by the cathode connection electrode disposed therebetween. 
         [0030]    In a fifth embodiment of the present invention, the light emitting elements may form a plurality of light emitting element groups each including one or more light emitting elements arranged in a horizontal direction. The light emitting element groups may be successively arranged in a vertical direction. For each of the light emitting element groups, the number of anode connection electrodes may be equal to the number of anode electrodes of each of the light emitting elements. 
         [0031]    In a sixth embodiment of the present invention, each of the anode connection electrodes may include extensions extending in one direction from at least one among an upper portion, a lower portion and a central portion of each of the light emitting element groups including the light emitting elements arranged in one direction, the extensions being connected to the corresponding anode electrodes of the respective light emitting elements. 
         [0032]    In a seventh embodiment of the present invention, is a method of manufacturing a transparent electronic display board, including: a transparent electrode forming operation of forming a transparent electrode on an entire area of the transparent plate; an anode-connection-electrode area partitioning operation of separating, from the transparent electrode, areas corresponding to anode connection electrodes connected to anode electrodes of light emitting elements after the transparent electrode forming operation; a transparent-conductive-tape adhesion operation of adhering transparent conductive tape to areas corresponding to the anode connection electrodes after the area partitioning operation; and a light-emitting-element adhesion operation of disposing the light emitting element such that the anode electrodes are aligned with the respective anode connection electrodes and then adhering the light emitting element to the transparent plate 
         [0033]    In an eighth embodiment of the present invention, the anode-connection-electrode area partitioning operation may include forming the one or more anode connection electrodes corresponding to the number of anode electrodes of each of the light emitting elements. The anode connection electrodes may be disposed at one or more positions among above, below, and on a central portion of the areas on which the light emitting elements are adhered, such that the anode connection electrodes are spaced apart from each other in a vertical direction. The anode connection electrodes may extend in a direction in which the light emitting elements are arranged. 
         [0034]    In a ninth embodiment of the present invention, the anode-connection-electrode area partitioning operation may include forming extensions extending from each of the anode connection electrodes toward the areas on which the light emitting elements are adhered. The extensions may be connected to the corresponding anode electrodes of the respective light emitting elements. 
       MODE FOR INVENTION 
       [0035]    Hereinafter, a transparent electronic display board and a method of manufacturing the same according to the present invention will be described in detail with reference to the attached drawings. 
         [0036]      FIG. 2  is a view illustrating a transparent electronic display board according to the present invention.  FIG. 3  is a view showing the wiring of transparent electrodes in the transparent electronic display board according to the present invention.  FIG. 4  is an enlarged view of a portion of  FIG. 3 . 
         [0037]    Referring to  FIGS. 2 through 4 , the transparent electronic display board according to the present invention includes: a pair of transparent plates  10  that are spaced apart from each other by a predetermined distance and are adhered to each other by transparent resin; transparent electrodes  21  through  24  that are made of conductive material and are formed on either of the transparent plates  10  so as to introduce power; a plurality of light emitting elements  20 ,  20 ′,  20 ″, and  20 ′″ that are fastened to either of the transparent plates  10  and emit light using power applied from the transparent electrodes  21  through  24 ; a controller  30  for controlling on or off states of the light emitting elements  20 ; and transparent conductive tape  25  supplying power to the transparent electrodes  21  through  24 . 
         [0038]    Facing each other, the two transparent plates  10  are adhered to each other with transparent resin charged into a space between the transparent plates  10 . Each transparent plate  10  is made of any one of a transparent glass plate, acrylic glass, and polycarbonate. The combination between the transparent plate  10  and the light emitting elements  20  is a well-known technique; therefore, further explanation and illustration thereof will be omitted. 
         [0039]    Each light emitting element  20  is a luminous body turning light on or off depending on the supply of power. The light emitting elements  20  are fastened by conductive resin (not shown) to the transparent electrodes  21 ,  22 , and  23  provided on a surface of either of the two transparent plates  10 . A lower end of each light emitting element  20  is fastened to the transparent electrodes  21 ,  22 , and  23 . An upper portion of the light emitting element  20  is protected by the transparent resin and is adhered to the other transparent plate. Each light emitting element  20  has anode electrodes  20   a  through  20   c  and a cathode electrode  20   d . Positive power is input into or output from the anode electrodes  20   a ,  20   b , and  20   c . Negative power is input into or output from the cathode electrode  20   d . Each light emitting element  20  may comprise any one of a two-electrode light emitting element having one anode electrode and one cathode electrode, a three-electrode light emitting element having two anode electrodes and one cathode electrode, and a four-electrode light emitting element  20  having three anode electrodes and one cathode electrode. In the present invention, a four-electrode light emitting element will be illustrated as one example. 
         [0040]    The transparent electrodes  21  through  24  are formed by applying any one of an Indium Tin Oxide (ITO), Indium Zinc Oxide (IZO), and liquid polymer, which are conductive materials, to a surface of a transparent plate that faces another transparent plate. The transparent electrodes  21  through  24  are partitioned and separated from each other such that they are insulated from each other and are respectively connected to the anode electrodes  20   a ,  20   b , and  20   c  and the cathode electrode  20   d  of the light emitting element  20 . In detail, connected to the anode electrodes  20   a ,  20   b , and  20   c  of the light emitting element  20 , the anode connection electrodes  21  through  23  of the transparent electrodes  21  through  24  extend from one side of the transparent plate  10  of the entire area of the anode connection electrodes  21  through  23  in consideration of the positions of the anode electrodes of the light emitting elements, and are partitioned and separated from each other to form areas that respectively connect to the anode electrodes  20   a ,  20   b , and  20   c.    
         [0041]    The partitioned transparent electrodes  21  through  24  are respectively connected to the anode electrodes  20   a ,  20   b , and  20   c  and the cathode electrode  20   d  of the light emitting element  20 . The transparent electrodes  21  through  24  function to transmit control signals from the controller  30  to the light emitting element  20 . With regard to the transparent electrodes  21  through  24 , areas partitioned to be connected to the anode electrodes  20   a ,  20   b , and  20   c  of the light emitting element are respectively called the anode connection electrodes  21  through  23 , and an area partitioned to be connected to the cathode electrode  20   d  is called the cathode connection electrode  24 . 
         [0042]    In detail, the transparent electrodes  21 ,  22 ,  23 , and  24  comprise a plurality of groups of transparent electrodes  21 ,  22 ,  23 , and  24 . Each group of transparent electrodes  21 ,  22 ,  23 ,  24  includes: one or more anode connection electrodes  21  through  23  that are respectively connected to the one or more anode electrodes  20   a ,  20   b , and  20   c  formed on the single light emitting element  20 ; and a cathode connection electrode  24  connected to the cathode electrode  20   d.    
         [0043]    The number of anode connection electrodes  21  through  23  corresponds to the number of the anode electrodes  20   a ,  20   b , and  20   c  of each light emitting element  20 ; however, the single cathode connection electrode  24  is connected in common to the cathode electrodes  20   d  of a plurality of light emitting elements  20 . 
         [0044]    For example, for a four-electrode light emitting element  20 , the transparent electrodes  21  through  24  comprise a plurality of groups each of which includes a first through third anode connection electrodes  21  through  23  that are respectively connected to a first through third anode electrodes  20   a ,  20   b , and  20   c.    
         [0045]    A first group of anode connection electrodes  21  through  23  includes: a first anode connection electrode  21  connected to the first anode electrode  20   a  of the first light emitting element  20 ; a second anode connection electrode  22  connected to the second anode electrode  20   b ; and a third anode connection electrode  23  connected to the third anode electrode  20   c.    
         [0046]    A second group of anode connection electrodes  21 ′,  22 ′, and  23 ′ includes first anode connection electrodes  21 ′ through  23 ′ that are respectively connected to the first through third anode electrodes  20   a ,  20   b , and  20   c  of the second light emitting element  20 . That is, the anode connection electrodes  21  through  23  of the transparent electrodes that form the plurality of groups are respectively connected to the one or more anode electrodes  20   a ,  20   b , and  20   c  formed on each light emitting element  20 . 
         [0047]    However, the cathode connection electrode  24  is used in common. In other words, it is connected in common to the cathode electrodes  20   d  that are formed on the respective light emitting elements  20 . 
         [0048]    As such, in one embodiment, the present invention is characterized in that the single cathode connection electrode  24  is connected in common to the cathode electrodes  20   d  of the light emitting elements  20  provided on the transparent electronic display board, and the anode connection electrodes  21  through  23  are respectively connected to the anode electrodes  20   a ,  20   b , and  20   c  of each light emitting element  20 . 
         [0049]    The anode connection electrodes  21  through  23  form connection terminals (not designated by reference numerals) that are provided on one edge of the transparent plate  10  and are successively arranged downward from an upper end of the edge. The connection terminals comprise start points from which the anode connection electrodes  21  through  23  extend, and to which the transparent conductive tape  25  is adhered. 
         [0050]    In detail, on any one of an upper, lower, left and right edges of the transparent plate  10 , the cathode connection electrode  24 , connection terminals of the anode connection electrodes  21  through  23  of the first group, connection terminals of the anode connection electrodes  21 ′ through  23 ′ of the second group, and the connection terminals of the anode connection electrodes  21 ″ through  23 ″ of the third group are successively formed from the upper end or one end of the edge of the transparent plate  10 . Furthermore, the transparent conductive tape  25  is adhered to each of the connection terminals that are the start points of the anode connection electrodes  21  through  23 . 
         [0051]    Extending from the connection terminals, the anode connection electrodes  21  through  23  are respectively connected to the anode electrodes  20   a ,  20   b , and  20   c  of the light emitting elements  20 . The cathode connection electrode  24  corresponds to the entire area other than areas on which the anode connection electrodes  21  through  23  are formed. 
         [0052]    In one embodiment of the present invention, the transparent electrodes  21  through  24  are formed on the entirety of the transparent plate  10 . Thereafter, areas to which the anode connection electrodes  21  through  23  and the light emitting element  20  will be adhered are separated from each other such that they can be insulated from each other. The transparent conductive tape  25  is adhered to each of the areas allocated to the anode connection electrodes  21  through  23  so that electric signals can be transmitted between the controller  30  and the anode connection electrodes  21  through  23 . 
         [0053]    In addition, the present invention can be modified in a variety of ways as well as the above-mentioned embodiment. Hereinafter, another embodiment of the present invention will be described in detail with reference to  FIGS. 5 through 7 . 
         [0054]      FIG. 5  is a flowchart showing a method of manufacturing the transparent electronic display board according to the present invention. 
         [0055]      FIG. 6  is a view showing another embodiment of the transparent electronic display board according to the present invention.  FIG. 7  is an enlarged view of portion ‘B’ of  FIG. 6 . A light emitting element illustrated in  FIGS. 5 through 7  comprises a four-electrode light emitting element including three anode electrodes and a single cathode electrode. The present invention is not limited to this. A two- or three-electrode light emitting element also falls within the technical bounds of the present invention. 
         [0056]    Referring to  FIGS. 5 through 7 , the transparent electronic display board according to this embodiment of the present invention includes: one or more light emitting element groups  201 ,  202 , and  203 , each of which includes one or more light emitting element  20 ,  20 ′, and  20 ″ arranged in the horizontal direction; at least one cathode electrode  20   d  connected in common to anode electrodes  20   a ,  20   b , and  20   c  of the light emitting elements  20 ,  20 ′, and  20 ″ of each light emitting element group  201 ,  202 ,  203 ; and a cathode connection electrode  24  connected in common to the cathode electrodes  20   d  of the light emitting elements  20 ,  20 ′, and  20 ″. 
         [0057]    In this embodiment, each light emitting element  20 ,  20 ′,  20 ″ includes one or more anode electrodes  20   a ,  20   b , and  20   c  and a single cathode electrode  20   d . One or more light emitting elements are arranged in the horizontal direction to form a single light emitting element group. 
         [0058]    The light emitting element groups  201 ,  202 , and  203  are successively arranged from the upper end of the transparent plate  10  to the lower end thereof. 
         [0059]    Each light emitting element group  201 ,  202 ,  203  includes one or more light emitting elements  20 ,  20 ′, and  20 ″ that are arranged in the horizontal direction at positions spaced apart from each other. Each light emitting element  20 ,  20 ′,  20 ″ may comprise any one of two-, three-, and four-electrode light emitting elements. In this embodiment, a four-electrode light emitting element will be illustrated as one example. 
         [0060]    The anode connection electrodes  21 ,  22 , and  23  comprise at least one group of anode connection electrodes. The anode connection electrodes  21 ,  22 , and  23  of each group extend from one side of the transparent plate  10  and are connected to the anode electrodes  20   a ,  20   b , and  20   c  of the light emitting elements  20 ,  20 ′, and  20 ″ of the corresponding light emitting element group. 
         [0061]    For example, the number of anode connection electrodes  21 ,  22 , and  23  is the same as that of the anode electrodes  20   a ,  20   b , and  20   c  of each light emitting element  20 ,  20 ′,  20 ″. Each anode connection electrode  21 ,  22 ,  23  is connected in common to the corresponding anode electrodes  20   a ,  20   b ,  20   c  of the light emitting elements of the same light emitting element group. That is, a first group of anode connection electrodes  21 ,  22 , and  23  that is connected to the first light emitting element group includes: a first anode connection electrode  21  that is connected to the first anode electrodes  20   a  of the light emitting elements of the first light emitting element group  201 ; a second anode connection electrode  22  that is connected in common to the second anode electrodes  20   b  of the first light emitting element group  201 ; and a third anode connection electrode  23  that is connected to the third anode electrodes  20   c  of the first light emitting element group  201 . 
         [0062]    The cathode connection electrode  24  is connected in common to the cathode electrodes of all of the light emitting elements  20 ,  20 ′, and  20 ″ of the first light emitting element group  201  and thus functions as a ground terminal. 
         [0063]    The first anode connection electrode  21  is disposed at an upper position of each light emitting element group  201 ,  202 ,  203  and extends in the direction in which the light emitting elements  20 ,  20 ′,  20 ″, and  20 ′″ are arranged. The third anode connection electrode  23  is disposed at a lower position of each light emitting element group  201 ,  202 ,  203  and extends in the direction in which the light emitting elements  20 ,  20 ′,  20 ″, and  20 ′″ are arranged. The second anode connection electrode  22  is disposed between the first anode connection electrode  21  and the third anode connection electrode  23  and extends in the direction of the arrangement of the light emitting element group. 
         [0064]    The first anode connection electrode  21  and the third anode connection electrode  23  extend in one direction with a group (for example,  201  of  FIG. 6 ) of light emitting elements  20 ,  20 ′,  20 ″, and  20 ′″ disposed between the first and third anode connection electrodes  21  and  23 . The first anode connection electrode  21  and the third anode connection electrode  23  respectively include a plurality of extensions  211  and a plurality of extensions  231  that are extended toward and connected to the first and third anode electrodes  20   a  and  20   c  of the light emitting elements  20 ,  20 ′,  20 ″, and  20 ′″ of the first light emitting element group  201 . 
         [0065]    That is, the first anode connection electrode  21  extends in the horizontal direction and includes one or more first extensions  211  that are respectively connected to the first anode electrodes  20   a  of the light emitting elements  20 ,  20 ′,  20 ″, and  20 ′″, which are disposed below the first anode connection electrode  21 . The third anode connection electrode  23  includes one or more second extensions  231  that are respectively connected to the third anode electrodes  20   c  of the light emitting elements. 
         [0066]    The second anode connection electrode  22  extends from one side of the transparent plate  10  towards the other side and passes through a central portion of an area in which the light emitting element group is disposed. The second anode connection electrode  22  is connected in common to the second anode electrodes  20   b  of the light emitting elements that belong to each light emitting element group  201 ,  202 ,  203 . 
         [0067]    In the same manner as the preceding embodiment, the first through third anode connection electrodes  21  through  23  are configured such that they are partitioned and insulated from the transparent electrode (cathode connection electrode)  24  applied to the entirety of the transparent plate  10  and have portions that extend depending on the positions of the light emitting elements  20 ,  20 ′,  20 ″, and  20 ′″. Therefore, it is unnecessary to form a separate cathode connection electrode. 
         [0068]    Hereinafter, a method of manufacturing the transparent electronic display board according to the present invention will be described with reference to  FIG. 5 . 
         [0069]    The method of manufacturing the transparent electronic display board according to the present invention includes: a transparent electrode forming operation S 10  of forming a transparent electrode on an entire area of the transparent plate  10 ; an anode-connection-electrode area partitioning operation S 20  of separating, from the transparent electrode, areas corresponding to the anode connection electrodes  21 ,  22 , and  23  that are connected to the anode electrodes  20   a ,  20   b , and  20   c  of the light emitting elements  20  after the transparent electrode forming operation S 10 ; a transparent-conductive-tape adhesion operation S 30  of adhering the transparent conductive tape  25  to the anode connection electrodes  21 ,  22 , and  23  after the area partitioning operation S 20 ; a light-emitting-element adhesion operation S 40  of disposing the light emitting element  20  such that the anode electrodes  20   a ,  20   b , and  20   c  correspond to the respective anode connection electrodes  21 ,  22 , and  23  and then adhering the light emitting element  20  to the transparent plate; a resin filling and hardening operation S 50  of charging transparent resin into space between the two transparent plates  10  and hardening the transparent resin to bond the transparent plates  10  to each other. 
         [0070]    In the transparent electrode forming operation S 10 , the transparent electrode is formed on the entire area of either of the two transparent plates  10  forming the transparent electronic display board. 
         [0071]    In the area partitioning operation S 20  of forming areas of the anode connection electrodes  21 ,  22 , and  23 , after the transparent electrode forming operation S 10 , the transparent electrode is partitioned into a plurality of sections so as to form the anode connection electrode sections and areas for bonding the light emitting elements  20  to the transparent plate. Here, each anode connection electrode  21 ,  22 ,  23  has a connection terminal on one edge of the transparent plate  10  and is formed by an area extending from the connection terminal to the area for bonding the light emitting element  20 . The anode connection electrodes  21 ,  22 , and  23  are formed such that they are insulated from adjacent anode connection electrodes  21 ′,  22 ′, and  23 ′. The transparent electrode, other than the areas on which the anode connection electrodes  21 ,  22 , and  23  are formed, corresponds to the cathode connection electrode  24 . 
         [0072]    As such, in the anode-connection-electrode area partitioning operation S 20 , the connection terminals are successively formed on one edge of the transparent plate  10 . For example, like the anode connection electrodes  21 ,  22 , and  23  of the first group that are connected to the anode electrodes  20   a ,  20   b , and  20   c  of the first light emitting element  20 , and like the anode connection electrodes  21 ′,  22 ′, and  23 ′ of the second group that are connected to the second light emitting element  20 , the connection terminals of the anode connection electrodes  21 ,  22 , and  23  are successively formed according to the order in which the light emitting elements  20  are positioned. Here, a connection terminal of the transparent electrode (cathode connection electrode)  24  that is first formed is disposed at the uppermost or lowermost end of the edge of the transparent plate  10 . 
         [0073]    That is, in one embodiment of the present invention, the transparent electrode that is first formed is partitioned into the anode connection electrodes  21 ,  22 , and  23 . The area of the transparent electrode other than the anode connection electrodes  21 ,  22 , and  23  forms the cathode connection electrode  24  that is connected to the cathode electrodes  20   d  of the light emitting elements  20 . Therefore, in the present invention, only the anode connection electrodes  21 ,  22 , and  23  are separately formed unlike the conventional technique in which the anode connection electrodes  21 ,  22 , and  23 , and the cathode connection electrode must be individually formed through separate processes. Therefore, the present invention can markedly reduce the number of processes and the manufacturing times compared to conventional techniques. 
         [0074]    In the transparent-conductive-tape adhesion operation S 30 , the transparent conductive tape  25  is adhered to start ends of the anode connection electrodes  21 ,  22 , and  23 . The transparent conductive tape  25  is electrically connected to the controller  30  and functions to transmit a control signal for the light emitting elements  20  from the controller  30  to the anode connection electrodes. 
         [0075]    In the light-emitting-element adhesion operation S 40 , after the transparent-conductive-tape adhesion operation S 30 , the ends of the anode connection electrodes  21 ,  22 , and  23  are respectively aligned with the anode electrodes  20   a ,  20   b , and  20   c . Thereafter, the light emitting element  20  is adhered to the transparent plate by transparent resin or conductive transparent resin. 
         [0076]    In the resin filling and hardening operation S 50 , after the light-emitting-element adhesion operation S 40 , the other transparent plate  10  comes into contact with the transparent plate  10  on which the transparent electrode is formed. Subsequently, transparent resin is charged into the space between the transparent plates  10  so that the transparent plates  10  are adhered to each other. The transparent resin is thereafter hardened at room temperature, thus completing the transparent electronic display board. 
         [0077]    The transparent electronic display board manufactured through the above-mentioned process does not require a separate transparent electrode connected to the cathode electrode  20   d  of each light emitting element  20 . Therefore, the manufacturing process can be simplified compared to that of conventional techniques. 
         [0078]    The above-mentioned manufacturing method pertains to the transparent electronic display board according to the preceding embodiment. Hereinafter, a method of manufacturing the transparent electronic display board according to another embodiment will be explained. Detailed explanation of the same operations as that of the manufacturing method pertaining to the preceding embodiment will be omitted. 
         [0079]    In the method of manufacturing the transparent electronic display board according to another embodiment of the present invention, after the transparent electrode forming operation S 10 , first through third anode connection electrodes  21  through  23  extend from one edge of the transparent plate  10  in the direction in which the elements of each light emitting element group are arranged. Here, the first anode connection electrode  21  and the third anode connection electrode  23  are disposed at the upper and lower positions spaced apart from each other by a predetermined distance. The second anode connection electrode  22  is disposed between the first anode connection electrode  21  and the third anode connection electrode  23 . 
         [0080]    Areas, on which one or more light emitting element  20 ,  20 ′,  20 ″, and  20 ′″ spaced apart from each other at regular intervals are placed, are formed between the first anode connection electrode  21  and the third anode connection electrode  23 . Furthermore, the first anode connection electrode  21  extends to the areas on which the one or more light emitting elements  20 ,  20 ′,  20 ″, and  20 ′″ are placed and includes one or more first extensions  211  vertically extending to positions corresponding to the first anode electrodes  20   a  of the light emitting elements  20 ,  20 ′,  20 ″, and  20 ′″. 
         [0081]    In addition, the third anode connection electrode  23  includes second extensions  231  vertically extending from the respective areas, on which the light emitting elements  20 ,  20 ′,  20 ″, and  20 ′″ are placed, to positions corresponding to the third anode electrodes  20   c  of the light emitting elements  20 ,  20 ′,  20 ″, and  20 ′″. 
         [0082]    The second anode connection electrode  22  is disposed between the first extension  211  and the second extension  231  and extends from one side of the transparent plate  10  toward the other side thereof. 
         [0083]    In the light-emitting-element adhesion operation S 40 , the first anode connection electrode  21 , the second anode connection electrode  22  and the third anode connection electrode  23  are disposed such that the anode electrodes  20   a ,  20   b , and  20   c  of each of the light emitting elements  20 ,  20 ′,  20 ″, and  20 ′″ are connected to the first through third anode connection electrodes  21  through  23 . The first through third anode connection electrodes  21  through  23  are thereafter adhered to the transparent plate. 
         [0084]    Here, the first anode electrode  20   a  of the light emitting element  20  is connected to the first extension  211  extending from the first anode connection electrode  21 . The second anode electrode  20   b  is connected to the second anode connection electrode  22 . The third anode electrode  20   c  is connected to the second extension  231  from the third anode connection electrode  23 . 
         [0085]    Furthermore, the cathode electrodes  20   d  of the light emitting elements  20 ,  20 ′,  20 ″, and  20 ′″ are brought into contact with areas of the first-formed transparent electrode  24  other than the first through third anode connection electrodes  21  through  23 . Therefore, it is unnecessary to form a separate cathode connection electrode. 
         [0086]    As described above, a transparent electrode is formed such that it is connected in common to cathode electrodes of a plurality of light emitting elements. Therefore, wiring for the transparent electrode connected to the light emitting elements can be easily designed. Furthermore, the number of processes can be reduced, and productivity can be enhanced. 
         [0087]    Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.