JP5431851B2 - Two-dimensional code display medium - Google Patents

Description

  The present invention relates to a two-dimensional code display medium for displaying a two-dimensional code, and more particularly to a technique for displaying a fixed area when displaying a two-dimensional code including a fixed area and a variable area.

  Conventionally, barcodes have been used to manage articles. This bar code represents the identification information in the white region by the width and interval of a plurality of black lines, and the identification information can be recognized by reading it with a bar code reader. In recent years, a two-dimensional code in which identification information is expressed by a cell distribution pattern represented by dots painted in different colors has been used. Since the two-dimensional code expresses identification information two-dimensionally as a distribution pattern of cells represented by dots as compared with the barcode as described above, a lot of information can be expressed.

  Such a two-dimensional code is used by being directly printed on an article or printed on a label and attached to the article. For this reason, the two-dimensional code that has been printed once cannot be changed. When changing the two-dimensional code, the two-dimensional code is reprinted on the article or the label on which the changed two-dimensional code is printed is reattached. Have to do.

  Therefore, a plurality of electrodes are arranged in a matrix, a display medium is arranged so as to face the plurality of electrodes, and information is displayed by changing the state of the display medium using a potential applied to the electrodes. A technique for displaying a two-dimensional code using a display panel has been considered (for example, see Patent Document 1).

JP 2006-234911 A

  In the case of displaying a two-dimensional code using the information display panel as described above, in order to display the two-dimensional code, electrodes having a size corresponding to one cell constituting the two-dimensional code are arranged in a matrix. Since a plurality of electrodes are arranged and potentials are selectively applied to the plurality of electrodes, when a two-dimensional code is directly displayed, wiring and connection terminals for applying potentials are connected to the plurality of electrodes, respectively. Need to be. However, the size of one cell constituting a two-dimensional code is composed of dots and is extremely small so that it is difficult to arrange a plurality of wirings. Furthermore, depending on the type of two-dimensional code, The number of the cell dots is extremely large, and there is a problem that it becomes difficult to dispose wirings and connection terminals connected to each of the plurality of electrodes. In particular, for the formation of wiring and connection terminals, etching or screen printing using conductive ink is generally used. However, in screen printing, ink is thickly deposited, so fine wiring and connection terminals are used. It is difficult to form.

  Here, the two-dimensional code as described above is composed of a fixed area uniquely determined by its type and a variable area for identifying information. Therefore, it is considered to solve the above-described problems by devising the display of the fixed area.

  The present invention has been made in view of the problems of the prior art as described above, and in the case of displaying a two-dimensional code using a plurality of electrodes, formation of wirings and electrodes connected to the electrodes An object of the present invention is to provide a two-dimensional code display medium capable of simplifying the above.

In order to achieve the above object, the present invention provides:
A plurality of information display unit cells are two-dimensionally arranged , information is represented by an array of at least two colors in the plurality of information display unit cells, and a color array in the plurality of information display unit cells is independent of the information A two-dimensional code display medium for displaying a two-dimensional code having a fixed region fixed to the variable region and a variable region in which the color arrangement in the plurality of information display unit cells is variable according to the information,
A plurality of variable region electrodes arranged in a matrix corresponding to each of the plurality of information display unit cells in the variable region;
A fixed region electrode disposed over the entire surface of the fixed region in the fixed region;
The color is arranged in the information display unit cell according to the potential applied to the plurality of variable region electrodes and the fixed region electrode, which is disposed opposite to the plurality of variable region electrodes and the fixed region electrode. Information display means for displaying
Arrangement area of information display unit cell which is arranged on the opposite side to the plurality of variable area electrodes and the fixed area electrode of the information display means and which has a predetermined color among the areas facing the fixed area electrode Has a colored layer colored in the predetermined color.

  In the present invention configured as described above, information is represented by the distribution pattern of a plurality of cell dots and / or the arrangement order of the colors of the plurality of cell dots, and the distribution pattern of the plurality of cell dots and / or the plurality of cell dots. The arrangement order of the colors included in the cell dots is fixed regardless of the information, and the distribution pattern of the plurality of cell dots and / or the arrangement order of the colors included in the plurality of cell dots is variable according to the information. When displaying a two-dimensional code having a variable region, a plurality of variable region electrodes arranged in a matrix corresponding to each of a plurality of cell dots in the variable region, or a fixed region over the entire fixed region. By displaying the color of the cell dots in the information display means in accordance with the potential applied to the fixed area electrodes arranged across Display of the two-dimensional code is made. Here, in the fixed area, the fixed area electrodes are arranged over the entire surface of the fixed area, so that any one of the colors of the plurality of cell dots is displayed by the information display means. However, a cell in which a colored layer disposed on the side opposite to the plurality of variable region electrodes and fixed region electrodes of the information display means has a predetermined color in the region facing the fixed region electrodes. Since the display area of the dots is colored in color, if a potential that causes the information display means to display a color other than that color is applied to the fixed area electrode, the fixed area also has different colors. The distribution pattern of the plurality of cell dots and / or the arrangement order of the colors included in the plurality of cell dots are displayed.

  As described above, in the fixed region of the two-dimensional code, the fixed region electrode is arranged over the entire fixed region, and the variable region electrode and the fixed region electrode of the information display means are Among the regions facing the fixed region electrode, the colored layer disposed on the opposite side is colored with the cell dot display region having a predetermined color, and the fixed region electrode has information display means. By applying a potential such that a color other than that color is displayed, a distribution pattern of a plurality of cell dots having different colors and / or an arrangement of colors of a plurality of cell dots in a fixed region Since the order is displayed, in the fixed region, it is not necessary to provide wiring and connection terminals for applying a potential to the fixed region electrode by the number of the plurality of cell dots. Formation of the the wiring and electrodes is simplified.

  As described above, in the present invention, in the fixed region of the two-dimensional code, the fixed region electrode is arranged over the entire fixed region, and a plurality of variable region electrodes of the information display means and Because the colored layer arranged on the opposite side of the fixed region electrode is configured to have a cell dot display region having a predetermined color among the regions facing the fixed region electrode, By applying a potential such that a color other than that color is displayed in the information display means to the fixed region electrode, a plurality of cell dot distribution patterns having different colors from each other in the fixed region and / or a plurality of As a result, the arrangement order of the colors of the cell dots is displayed. Accordingly, in the fixed area, a plurality of wirings and connection terminals for applying a potential to the fixed area electrode are arranged. It is not necessary to provide a few minutes of dots, the formation of wiring and electrodes connected to the electrode can be simplified.

It is a figure which shows an example of the two-dimensional code displayed by the two-dimensional code display medium of this invention, (a) is a surface figure, (b) is the fixed area | region and variable area | region of the two-dimensional code 1 shown to (a) FIG. It is a figure which shows the structure of the wiring electrode board | substrate used for one Embodiment of the two-dimensional code display medium of this invention, (a) is the figure seen from the surface, (b) is AA shown to (a). 'Cross section. It is a figure which shows the structure of the two-dimensional code display medium using the wiring electrode board | substrate shown in FIG. 2, (a) is the figure seen from the surface, (b) is AA 'sectional drawing shown to (a) (C) is BB 'sectional drawing shown to (a), (d) is the A section enlarged view shown to (b). It is a figure for demonstrating the operation | movement at the time of displaying the two-dimensional code shown in FIG. 1 with the two-dimensional code display medium shown in FIG.

  Embodiments of the present invention will be described below with reference to the drawings.

  First, the two-dimensional code displayed by the two-dimensional code display medium of the present invention will be described.

  FIG. 1 is a diagram showing an example of a two-dimensional code displayed by the two-dimensional code display medium of the present invention, where (a) is a front view and (b) is a fixation of the two-dimensional code 1 shown in (a). It is a figure which shows an area | region and a variable area. The two-dimensional code 1 shown in FIG. 1 is called a QR code.

  As shown in FIG. 1, the two-dimensional code in this example is expressed by cell dots 4 that are cells represented by dots having white and cell dots 5 that are cells represented by dots having black. Distributed and displayed in a pattern according to the information to be performed. In such a two-dimensional code 1, position detection patterns 2a are arranged at three corners in order to correctly recognize the direction and position of the two-dimensional code 1, and each of the three position detection patterns 2a has one side. A square consisting of three cell dots 5 is surrounded by a square shape consisting of five cell dots 4 on one side, and is further surrounded by a square shape consisting of seven cell dots 5 on one side. Further, inside the position detection pattern 2a, an L-shaped separation pattern 2b composed of eight cell dots 4 on one side is arranged to distinguish the position detection pattern 2a from other regions. Further, among the outer sides of the three separation patterns 2b, the corners on the center side of the two-dimensional code 1 of the square shape in which one side which is the outermost periphery of the three position detection patterns 2a is composed of seven cell dots 5 are laterally arranged. A timing pattern 2c in which the cell dots 4 and the cell dots 5 are alternately arranged in order to recognize the model number of the two-dimensional code 1 is arranged in a region connected in the vertical direction. A quiet zone 2d made of white for distinguishing the two-dimensional code 1 from other regions is provided around the two-dimensional code 1. These position detection pattern 2a, separation pattern 2b, timing pattern 2c, and quiet zone 2d are fixed regions 2 in which the distribution pattern of the cell dots 4 and 5 is fixed regardless of the information to be expressed. This area is a variable area 3 in which the distribution pattern of the cell dots 4 and 5 is variable according to the information to be expressed.

  2A and 2B are diagrams showing a configuration of a wiring electrode substrate used in an embodiment of the two-dimensional code display medium of the present invention, where FIG. 2A is a diagram seen from the surface, and FIG. 2B is a diagram shown in FIG. It is AA 'sectional drawing. The wiring electrode substrate 10 shown in FIG. 2 is used for a two-dimensional code display medium for displaying the two-dimensional code 1 shown in FIG.

  As shown in FIG. 2, the wiring electrode substrate in this embodiment is configured by forming a fixed region electrode 12 and a variable region electrode 13 on one surface of a base substrate 11.

  The fixed region electrode 12 is arranged over the entire surface of the position detection pattern 2a, the separation pattern 2b, the timing pattern 2c, and the quiet zone 2d, which becomes the fixed region 2 shown in FIG. Is for displaying. A connection terminal 15 is connected to the fixed region electrode 12 through a wiring 14, and a potential is applied to the fixed region electrode 12 by applying a potential through the connection terminal 15. become.

  The variable region electrodes 13 have substantially the same shape as the single cell dots 4 and 5 in the variable region 3 and are arranged in a matrix. The variable region electrodes 13 arranged in a matrix are connected to individual wires (not shown) formed on the back surface of the base substrate 11 through through holes (not shown). A potential is applied through connection terminals (not shown) connected to each other.

  3A and 3B are diagrams showing a configuration of a two-dimensional code display medium using the wiring electrode substrate 10 shown in FIG. 2, wherein FIG. 3A is a view seen from the surface, and FIG. -A 'sectional drawing, (c) is BB' sectional drawing shown to (a), (d) is the A section enlarged view shown to (b).

  As shown in FIG. 3, the two-dimensional code display medium in this embodiment is an information display means on the surface of the wiring electrode substrate 10 shown in FIG. 2 on which the fixed region electrode 12 and the variable region electrode 13 are formed. The display layer 20 and the transparent conductive film substrate 30 are laminated. The transparent conductive film substrate 30 is configured by forming a transparent electrode (for example, ITO) 32 on one surface of a transparent substrate 31 made of glass or the like, and the information display layer 20 includes a partition wall 21 and a seal layer 24. The partition wall liquid 22 in which the chargeable particles 23 are dispersed is accommodated in a region surrounded by. The wiring electrode substrate 10, the information display layer 20, and the transparent conductive film substrate 30 are regions in which the transparent electrode 32, the fixed region electrode 12, and the variable region electrode 13 are surrounded by the partition wall 21 and the seal layer 24. Are stacked so as to face each other through the liquid 22 in the partition. The partition wall 21 includes a bottom portion, a side portion that is an outer peripheral portion of the information display layer 20, and a wall portion that divides the region surrounded by the side portion into a plurality of regions, and is on the side opposite to the bottom portion. The surface is open. And it laminates | stacks so that the bottom part side may oppose the transparent conductive film substrate 30, and the sealing layer 24 is laminated | stacked on the opened side.

  The transparent conductive film substrate 30 is laminated on the information display layer 20 on the opposite side of the fixed region electrode 12 and the variable region electrode 13, and is a region not facing the fixed region electrode 12 and the variable region electrode 13. Further, for example, black mask printing 33 is applied, so that the wirings 14 and the connection terminals 15 formed on the wiring electrode substrate 10 are not visually recognized through the transparent conductive film substrate 30. Further, in the area facing the fixed area electrode 12, that is, in the fixed area 2 of the two-dimensional code 1 shown in FIG. 1, the black mask by the cell dots 5 shown in FIG. By applying the printing 34, a colored layer is formed. As a result, in the two-dimensional code display medium according to this embodiment, the display area of the cell dots 5 in the fixed area 2 of the two-dimensional code 1 shown in FIG.

  Below, the two-dimensional code display by the two-dimensional code display medium comprised as mentioned above is demonstrated.

  FIG. 4 is a diagram for explaining an operation when the two-dimensional code shown in FIG. 1 is displayed on the two-dimensional code display medium shown in FIG.

  When the two-dimensional code shown in FIG. 1 is displayed by the two-dimensional code display medium shown in FIG. 3, for example, the transparent electrode 32 is set to the GND potential, the fixed region electrode 12 formed on the base substrate 11 and the variable electrode are variable. Among the region electrodes 13, the fixed region electrode 12 and the variable region electrode 13 for displaying white cell dots 4 in accordance with the information desired to be expressed in the variable region 3 are set to a negative potential, and the variable region 3 The variable region electrode 13 for displaying the black cell dots 5 is set to a positive potential in accordance with the information desired to be expressed. This is because a negative potential is applied to the connection terminal 15 connected to the fixed region electrode 12 via the wiring 14, and the connection connected to the individual wiring connected to the variable region electrode 13 via the through hole. This is done by selectively applying a positive potential or a negative potential to the terminals.

  As described above, when the transparent electrode 32 is set to the GND potential and the fixed region electrode 12 and the variable region electrode 13 are set to the positive potential or the negative potential, the liquid 22 in the partition housed in the region surrounded by the partition wall 21. 4 is made of a dielectric material, and the chargeable particles 23 are charged at a negative potential. Therefore, as shown in FIG. 4A, the chargeable particles 23 move in the partition wall liquid 22 by Coulomb force. In the region where the fixed region electrode 12 and the variable region electrode 13 that are set to a negative potential are formed, the chargeable particles 23 are attracted to the transparent electrode 32 side, and the variable region is set to a positive potential. In the region where the electrode 13 is formed, the chargeable particles 23 are attracted toward the variable region electrode 13 side.

  The partition wall liquid 22 is colored with a dye or a pigment, and the chargeable particles 23 contain a light scattering component having a high refractive index. Therefore, the region where the chargeable particles 23 are attracted to the variable region electrode 13 side is colored. The region where the charged particles 23 are attracted to the transparent electrode 32 side appears white.

  Then, in the variable region 3, the size of the variable region electrode 13 is substantially the same as that of the single cell dot 4, 5 displayed in the variable region 3 of the two-dimensional code 1 shown in FIG. Therefore, among the variable region electrodes 13 disposed in the variable region 3, the variable region disposed in the region corresponding to the white cell dots 4 distributed in a pattern according to the information expressed by the two-dimensional code 1. The electrode 13 for negative is set to a negative potential, and the variable region electrode 13 arranged in a region corresponding to the black cell dots 5 distributed in a pattern corresponding to the information expressed by the two-dimensional code 1 is set to a positive potential. Then, when the transparent conductive film substrate 30 is viewed from the side opposite to the wiring electrode substrate 10, as shown in FIG. 4B, the variable region 3 of the two-dimensional code 1 shown in FIG. Information in area 3 It will be identified. At this time, the plurality of variable region electrodes 13 having the same potential according to the distribution pattern of the cell dots 4 and 5 in the variable region 3 are arranged in a matrix, but the intervals are very small. Therefore, when a plurality of adjacent variable region electrodes 13 are set to the same potential, the minute interval is not recognized, and when two adjacent variable region electrodes 13 are set to the same potential, two variable region electrodes 13 are used. The cell dots 4 and 5 displayed by the electrode 13 are connected and recognized.

  In addition, in the fixed region 2, the fixed region electrode 12 is set to a negative potential, so that the entire information display layer 20 looks white from the transparent conductive film substrate 30 side. In a region facing the fixed region electrode 12 of the transparent conductive film substrate 30, that is, in the fixed region 2 of the two-dimensional code 1 shown in FIG. 1, the black mask printing 34 is applied to the display region of the black cell dots 5. Therefore, as shown in FIG. 4B, the white cell dots 4 formed by the information display layer 20 and the black cell dots 5 formed by the mask printing 34 of the transparent conductive film substrate 30 are used for the two-dimensional display shown in FIG. The fixed area 2 of the code 1 is expressed, and in the fixed area 2, the position detection pattern 2a, the separation pattern 2b, the timing pattern 2c, and the quiet zone 2d are recognized.

  As described above, in the present embodiment, the fixed region electrodes 12 for displaying the white cell dots 4 are arranged over the fixed region 2 in the fixed region 2 of the two-dimensional code 1 shown in FIG. However, the electrode for displaying the black cell dots 5 is not arranged, and instead, the black mask printing 34 by the cell dots 5 is formed in the region corresponding to the fixed region 2 of the transparent conductive film substrate 30. As a result, the electrodes, wirings, and connection terminals for displaying the cell dots 5 in the fixed region 2 become unnecessary, the number of wirings and connection terminals connected to the electrodes is reduced, and wirings connected to the electrodes The formation of the electrode can be simplified. In addition, for the formation of wiring and connection terminals, generally, screen printing using etching or conductive ink is used. However, in screen printing, since ink is thickly deposited, fine wiring and connection terminals are used. It is difficult to form. Therefore, when forming wirings and connection terminals by screen printing, as described above, the number of wirings and connection terminals connected to the fixed region electrodes 12 and the variable region electrodes 13 is reduced, so that the wirings and connection terminals are reduced. The effect of facilitating the formation of is easily obtained.

  Further, as in the present embodiment, the fixed region electrode 12 is disposed in the region to be the fixed region 2, and the black mask printing 34 by the cell dots 5 is performed in the region facing the fixed region electrode 12 of the transparent conductive film substrate 30. By forming the colored layer in the fixed region 2 by applying the above, when the fixed region electrode 12 is set to a positive potential, the entire fixed region 2 is colored and the two-dimensional code cannot be read. can do. This is an effect that cannot be realized when white mask printing is applied to the white area of the fixed area 2.

  In this embodiment, a colored layer is formed by applying black mask printing 34 by the cell dots 5 to a region facing the fixed region electrode 12 of the transparent conductive film substrate 30. It is also conceivable to form on the bottom of the partition wall 21 constituting the information display layer 30.

  Further, in this embodiment, in the two-dimensional code 1 shown in FIG. 1, the position detection pattern 2a, the separation pattern 2b, the timing pattern 2c, and the quiet zone 2d are set as the fixed region 2, and the fixed region is used over the entire region. Although the electrode 12 is disposed, the position detection pattern 2a, the separation pattern 2b, and the timing pattern 2c among the position detection pattern 2a, the separation pattern 2b, the timing pattern 2c, and the quiet zone 2d are set as fixed regions, and the quiet zone 2d is opposed to each other. It is also conceivable to configure by performing white mask printing on the transparent substrate 31 without arranging the fixed region electrodes in the region to be performed. In that case, it is also conceivable to form a wiring connected to the variable region electrode 13 disposed in the variable region 3 on the surface of the base substrate 11 without passing through the through hole.

  Moreover, the color of the cell dots 4 and 5 described above may be reversed with each other, and is not limited to the above-described white and black, but may be two-dimensional, even if the color is red, blue, yellow, or the like. Any device that can be read by a code reader may be used. However, since the reading of the two-dimensional code 1 by the two-dimensional code reader requires a certain degree of accuracy for the white reading due to the reflection of light or the like, the white in the fixed region 2 as shown in this embodiment, By using the information display layer 20 which is the same display means as the variable area 3 instead of printing, the color of the white cell dots among the cell dots 4 and 5 constituting the two-dimensional code 1 is fixed area. 2 and the variable region 3 are unified so that the information expressed by the two-dimensional code 1 can be accurately recognized. In addition, when cell dots having two or more hues such as red, blue, and yellow as described above are used, information may be expressed by the arrangement order of the cell dots. The arrangement order of the cell dots in this case is to read the hue color of the cell dots sequentially from the end of the two-dimensional code 1 in the X direction or the Y direction with respect to the two-dimensional code 1 as described above, Reading the color of the cell dot hue diagonally from the corner of the two-dimensional code 1 can be arbitrarily determined depending on the setting, and more information can be expressed by combining it with the cell dot distribution pattern. Will be able to. In the information display layer 30, only two colors are expressed by the movement of the chargeable particles 23 in each of the plurality of sections surrounded by the partition wall 21 and the seal layer 24. Therefore, red, blue, When expressing cell dots having three or more different colors, such as yellow, can be realized by using the chargeable particles 23 of the information display layer 30 and the liquid 22 in the partition walls having different colors for each section. It becomes.

  Further, the barcode displayed on the barcode display medium of the present invention is not limited to the QR code as shown in FIG. 1, but has a fixed area and a variable area such as PDF417, DataMatrix, Maxi Code, and the like. Can be applied.

  Further, as described above, the bar code display medium of the present invention is not limited to the vertical electrophoretic method in which the display is switched by the chargeable particles 23 dispersed in the partition wall liquid 22 being moved by the potential difference generated on the front and back sides. First, a cholesteric liquid crystal system that uses two different molecular orientations due to phase transitions between the electrodes arranged on the front and back sides, and electro that develops an organic dye by reversibly oxidizing / reducing it. Any display can be applied as long as the display is switched by voltage application, such as a chromic system, an electronic powder, or EL (Electro Luminescence).

DESCRIPTION OF SYMBOLS 1 Two-dimensional code 2 Fixed area | region 2a Position detection pattern 2b Separation pattern 2c Timing pattern 2d Quiet zone 3 Variable area 4,5 Cell dot 10 Wiring electrode substrate 11 Base substrate 12 Electrode for fixed area 13 Electrode for variable area 14 Wiring 15 Connection terminal 20 Information Display Layer 21 Partition 22 Liquid in Partition 23 Chargeable Particles 24 Seal Layer 30 Transparent Conductive Substrate 31 Transparent Substrate 32 Transparent Electrode 33, 34 Mask Printing

Claims (1)

A plurality of information display unit cells are two-dimensionally arranged , information is represented by an array of at least two colors in the plurality of information display unit cells, and a color array in the plurality of information display unit cells is independent of the information A two-dimensional code display medium for displaying a two-dimensional code having a fixed region fixed to the variable region and a variable region in which the color arrangement in the plurality of information display unit cells is variable according to the information,
A plurality of variable region electrodes arranged in a matrix corresponding to each of the plurality of information display unit cells in the variable region;
A fixed region electrode disposed over the entire surface of the fixed region in the fixed region;
The color is arranged in the information display unit cell according to the potential applied to the plurality of variable region electrodes and the fixed region electrode, which is disposed opposite to the plurality of variable region electrodes and the fixed region electrode. Information display means for displaying
Arrangement area of information display unit cell which is arranged on the opposite side to the plurality of variable area electrodes and the fixed area electrode of the information display means and which has a predetermined color among the areas facing the fixed area electrode A two-dimensional code display medium having a colored layer colored in the predetermined color.

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