JP5868954B2 - Touch panel and manufacturing method thereof - Google Patents

Description

  The present invention relates to a touch panel and a manufacturing method thereof, and more particularly, to a touch panel using an offset printing process and a manufacturing method thereof.

The touch panel pressurizes the screen displayed on the panel and inputs information corresponding to the screen.
Due to convenience in use, touch panels have been actively applied to all display devices recently.

  In general, a touch panel extracts information by inputting coordinates of a pressurized portion using a capacitance method, a resistance film method, a surface ultrasonic method, an infrared method, or the like. Here, in the electrostatic capacity method, when the user touches the screen, the position of the current is detected by using the electrostatic capacity of the human body.

  An object is to provide a touch panel manufactured using an offset method. Moreover, it aims at providing the manufacturing method of the touch panel mentioned above.

  A touch panel according to an embodiment of the present invention includes: i) a substrate, ii) a plurality of electrostatic electrodes that are located within the display area for touching and are spaced apart from each other, and iii) a plurality of electrostatic electrodes. Bridge electrodes are connected to each other. One electrostatic electrode of the plurality of electrostatic electrodes includes: i) a plurality of first linear electrode portions; and ii) a plurality of second linear electrode portions intersecting with the plurality of first linear electrode portions. Including.

  One or more first linear electrode portions of the plurality of first linear electrode portions may extend to the bridge electrode. The peripheral edges of the first linear electrode portion and the electrostatic electrode may be adjacent to each other in parallel. One or more second linear electrode portions of the plurality of second linear electrode portions extend to the bridge electrode, and the second linear electrode portion may cross the first linear electrode portion with the bridge electrode. Good. The peripheral edges of the second linear electrode portion and the electrostatic electrode may be adjacent to each other in parallel. The one or more first linear electrode portions may include a plurality of first linear electrode portions, and the one or more second linear electrode portions may include a plurality of second linear electrode portions.

  The average width of the first linear electrode portion and the second linear electrode portion may be 5 μm to 30 μm. Preferably, the average width of the first linear electrode portion and the second linear electrode portion may be 10 μm to 30 μm. The angle at which the plurality of first linear electrode portions and the plurality of second linear electrode portions intersect with each other may be 15 ° to 90 °. The angle may be between 15 ° and 45 °. A touch panel according to an embodiment of the present invention is located on a substrate, is located in a non-display area surrounding the display area, and is drawn from an electrostatic electrode adjacent to the non-display area among the plurality of electrostatic electrodes. The plurality of electrostatic electrodes and the extraction electrode may be offset-printed and integrally formed.

  The plurality of electrostatic electrodes includes i) a first electrostatic electrode extending in a first direction, and ii) a second electrostatic electrode extending in a second direction intersecting the first direction, and the bridge electrode is i) A first bridge electrode connecting the first electrostatic electrodes to each other; and ii) a second bridge electrode connecting the second electrostatic electrodes to each other. One first bridge electrode of the first bridge electrodes and one second bridge electrode of the second bridge electrodes may cross each other while being insulated from each other. A transparent insulating layer may be located between the first bridge electrode and the second bridge electrode. The transparent insulating layer may be formed by screen printing. The second bridge electrode may be formed of a transparent conductive layer.

  The touch panel according to an embodiment of the present invention further includes another substrate including another plate surface in contact with the plurality of electrostatic electrodes, the first electrostatic electrode is in contact with the plate surface of the substrate, and the second electrostatic electrode is You may contact | connect the other board surface of another board | substrate. An adhesive film may be positioned between the first electrostatic electrode and the second electrostatic electrode. The plurality of electrostatic electrodes include copper (Cu), nickel (Ni), aluminum (Al), chromium (Cr), molybdenum (Mo), silver (Ag) or gold (Au), carbon black, graphite, tin oxide, And one or more materials selected from the group consisting of indium oxide. The average particle size of the material may be 30 nm to 3000 nm. Preferably, the average particle size of the material may be 50 nm to 100 nm. When the material is silver, the silver may have a wire shape or a spherical shape.

  The substrate may include one or more materials selected from the group consisting of glass, PET (polyethylene terephthalate), PEN (polyethylene naphthalate), PI (polyimide), and acrylic.

  The pitch of the first linear electrode portions adjacent to each other among the plurality of first linear electrode portions may be 250 μm to 750 μm.

  A touch panel according to an embodiment of the present invention includes: i) a substrate; ii) a plurality of first electrostatic electrodes formed in a display area for touch and spaced apart from each other while being positioned on a first plate surface of the substrate; ) Including a plurality of second electrostatic electrodes formed in the touch display area and spaced apart from each other while being positioned on the second plate surface facing the first plate surface and the far direction of the substrate. The plurality of first electrostatic electrodes and the plurality of second electrostatic electrodes have a mesh shape and are offset printed.

  A method for manufacturing a touch panel according to an embodiment of the present invention includes the steps of i) providing a substrate, ii) providing an electrode on the substrate, and iii) firing the electrode at a low temperature. Providing an electrode comprising: i) a plurality of first electrostatic electrodes spaced apart from each other on the substrate; ii) a plurality of second electrostatic electrodes spaced apart from each other and adjacent to the plurality of first electrostatic electrodes; iii) a bridge electrode for connecting a plurality of first electrostatic electrodes, and iv) one first electrostatic electrode located on one end side of the plurality of first electrostatic electrodes and the other end side of the plurality of second electrostatic electrodes The extraction electrodes respectively connected to one second electrostatic electrode located in the position may be offset printed. A plurality of first electrostatic electrodes, a plurality of second electrostatic electrodes, a bridge electrode, and an extraction electrode may be simultaneously offset printed.

  A method of manufacturing a touch panel according to an embodiment of the present invention includes: i) providing a transparent insulating layer on a bridge electrode; and ii) another bridge connecting a plurality of second electrostatic electrodes to each other on the transparent insulating layer. The method may further include providing an electrode. The transparent insulating layer may be provided by screen printing. Other bridge electrodes may be screen printed or offset printed.

  By using a simple offset process, a low-priced touch panel can be manufactured. Further, since there is no difference in height between the extraction electrode and the electrostatic electrode, the display quality can be improved by removing the air gap so that the moire phenomenon does not occur.

1 is an exploded perspective view of a touch panel according to a first embodiment of the present invention. It is an enlarged plan view of the II part of FIG. It is a schematic flowchart of the manufacturing method of the touch panel of FIG. It is a disassembled perspective view of the touchscreen which concerns on 2nd Embodiment of this invention. It is a disassembled perspective view of the touchscreen which concerns on 3rd Embodiment of this invention.

  If one part is “on top” of another part, this may be directly on top of the other part, with other parts in between. In contrast, if one part is “just above” another part, there are no other parts in between.

  The terminology used herein is for the purpose of referring to particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular form also includes the plural form unless the context clearly indicates the contrary. As used herein, the meaning of “comprising” embodies certain characteristics, regions, integers, steps, operations, elements, and / or components, and other specific properties, regions, integers, steps, operations, elements, It does not exclude the presence or addition of ingredients and / or groups.

  Terms indicating relative space, such as “below”, “above”, etc. may be used to more simply describe the relationship of the portion of the portion shown in the drawing to other portions. Such terms are intended to include other meanings and operations of the device in use, as well as the intended meaning in the drawings. For example, if the device in the drawing is turned upside down, a part described as being “below” other parts will be described as being “above” other parts. Thus, the exemplary term “down” includes all up and down directions. The device can be rotated 90 ° or rotated to other angles, and terms referring to relative space are to be interpreted accordingly.

  Although not defined otherwise, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by those with ordinary skill in the art to which this invention belongs. Have. Terms defined in commonly used dictionaries are additionally construed as having a meaning consistent with relevant technical literature and the content currently disclosed, and unless otherwise defined, are interpreted as ideal or very formal meanings. must not.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that a person having ordinary knowledge in the technical field to which the present invention can easily carry out. However, the present invention may be realized in various different forms, and is not limited to the embodiments described here.

  FIG. 1 schematically shows a touch panel 100 according to a first embodiment of the present invention. The structure of the touch panel 100 in FIG. 1 is merely for illustrating the present invention, and the present invention is not limited thereto. Therefore, the structure of the touch panel 100 may be modified to other forms.

  As shown in FIG. 1, the touch panel 100 includes a substrate 10, an electrostatic electrode 20, and a bridge electrode 30. In addition, the touch panel 100 may further include other elements as necessary. For example, the touch panel 100 may further include an extraction electrode 40 (shown in FIG. 2) and a connector (not shown). The extraction electrode 40 is formed on the periphery of the electrostatic electrode 20, and a connector (not shown) is connected to the extraction electrode 40, and an electrical signal is transmitted through a flexible printed circuit board (FPC) (not shown). You may transmit to drive circuits, such as a display apparatus. In FIG. 1, for convenience of explanation, the extraction electrode 40 is omitted.

  The electrostatic electrode 20 is located on the substrate 10. The electrostatic electrode 20 may be formed on the substrate 10 by offset printing. The electrostatic electrode 20 includes a first electrostatic electrode 201 and a second electrostatic electrode 203. The bridge electrode 30 includes a first bridge electrode 301 and a second bridge electrode 303. The first electrostatic electrodes 201 extend in the x-axis direction and are connected to each other by the first bridge electrode 301 (positioned below the second bridge electrode 303). The second electrostatic electrodes 203 extend in the y-axis direction and are connected to each other by the second bridge electrode 303. When an external voltage is applied to the electrostatic electrode 20, the voltage applied to the electrostatic electrode 20 is changed by a hand that touches the touch panel 100. The voltage change is converted into an electrical signal and transmitted to the outside. The touch panel 100 operates by such a method.

  As shown in FIG. 1, the first bridge electrode 301 and the second bridge electrode 303 that connect the first electrostatic electrode 201 and the second electrostatic electrode 203 to each other overlap each other. Therefore, by causing the first bridge electrode 301 and the second bridge electrode 303 to insulate and cross each other, it is possible to prevent a short-circuit phenomenon due to electrical connection between them. For this purpose, a transparent insulating layer (not shown) may be formed between the first bridge electrode 301 and the second bridge electrode 303. As the transparent insulating layer (not shown), a material such as an organic material or an inorganic material may be used. The first bridge electrode 301 and the second bridge electrode 303 are electrically insulated from each other while efficiently transmitting light through a transparent insulating layer (not shown). The transparent insulating layer may be formed by screen printing.

  In the enlarged circle of FIG. 1, the first electrostatic electrode 201 and the first bridge electrode 301 that connects them to each other are shown enlarged. For convenience of explanation, the second electrostatic electrode 203 located adjacent to the first electrostatic electrode 201 and the second bridge electrode 303 located on the first bridge electrode 301 are not shown. The electrode structure shown in FIG. 1 is only for illustrating the present invention, and the present invention is not limited to this. Therefore, the electrode structure of FIG. 1 may be modified into various forms.

  As shown in the enlarged circle of FIG. 1, the first electrostatic electrode 201 includes a first linear electrode portion 2011 and a second linear electrode portion 2013 (under the enlarged circle). The first linear electrode portion 2011 and the second linear electrode portion 2013 intersect each other. That is, the first electrostatic electrode 201 is formed with a mesh structure. The first electrostatic electrode 201 is made of copper (Cu), nickel (Ni), aluminum (Al), chromium (Cr), molybdenum (Mo), silver (Ag) or gold (Au), carbon black, graphite, tin oxide. Alternatively, a material such as indium oxide may be used. Such a material has excellent electrical conductivity and high electrical reliability, but is opaque and cannot transmit light appropriately.

  Therefore, a space is formed between the first linear electrode portion 2011 and the second linear electrode portion 2013 to transmit light. Here, the average width of the first linear electrode portion 2011 and the second linear electrode portion 2013 may be 5 μm to 30 μm. Preferably, the average width of the first linear electrode portion and the second linear electrode portion may be 10 μm to 30 μm. When the average width is too small, the first linear electrode portion 2011 and the second linear electrode portion 2013 are substantially difficult to manufacture in the offset process, and may be disconnected. On the other hand, when the average width is too large, the first linear electrode portion 2011 and the second linear electrode portion 2013 are observed with the naked eye. When the average width of the first linear electrode portion 2011 and the second linear electrode portion 2013 is adjusted to the above-described range, the average width of the first linear electrode portion 2011 and the second linear electrode portion 2013 becomes extremely fine. Therefore, the first linear electrode portion 2011 and the second linear electrode portion 2013 cannot be seen well with the naked eye. Therefore, the first linear electrode portion 2011 and the second linear electrode portion 2013 can ensure a sufficient aperture ratio.

  As shown in the enlarged circle of FIG. 1, the first linear electrode portion 2011 and the second linear electrode portion 2013 (upper side of the enlarged circle) extend to the first bridge electrode 301. That is, a part of the first linear electrode portion 2011 and the second linear electrode portion 2013 are included in the first bridge electrode 301, and these cross each other. In the first electrostatic electrode 201 at the lower left end, the peripheral edge 2015 of the first electrostatic electrode 201 is adjacent to the first linear electrode portion 2011. In the first electrostatic electrode 201 at the upper right end, the peripheral edge 2015 of the first electrostatic electrode 201 is adjacent to the second linear electrode portion 2013 side by side. Thereby, the bridge electrode 301 is formed by a part of the first linear electrode part 2011 and a part of the second linear electrode part 2013. The bridge electrode 301 may be formed by the plurality of first linear electrode portions 2011 and the plurality of second linear electrode portions 2013. On the other hand, the second electrostatic electrode 203 and the second bridge electrode 303 may be formed by a similar method.

  FIG. 2 is an enlarged plan view showing a portion II in FIG. In the enlarged circle of FIG. 2, the first linear electrode portion 2011 and the second linear electrode portion 2013 are shown enlarged.

  As shown in FIG. 2, the touch panel is divided into a touch display area (D) where an image is displayed and a non-display area (ND) where no image is displayed. The electrostatic electrode 20 is located in the touch display area (D), and the extraction electrode 40 is located in the non-display area (ND). The electrostatic electrode 205 is adjacent to the non-display area (ND). The extraction electrode 40 is extracted from the electrostatic electrode 205 and transmits a capacitance change of the electrostatic electrode 205 due to the touch to the extraction terminal 42. The lead terminal 42 is connected to a connector (not shown) and transmits an electrical signal to the outside. The width of the lead terminal 42 is formed wider than the width of the lead electrode 40 so that the electrical contact with the connector is good.

  The electrostatic electrode 20 and the extraction electrode 40 are simultaneously formed on the substrate 10 by an offset method. In this case, since both the electrostatic electrode 20 and the extraction electrode 40 are formed, not only the process is easy, but there is no height difference between the electrostatic electrode 20 and the extraction electrode 40. Therefore, when the touch panel and another element are combined, the gap formed between them can be minimized, so that deterioration of display quality due to the touch panel can be prevented. For example, when the transparent conductive film is formed in the display region (D) by a method such as laser annealing, the above-described problems may occur.

  As shown in the enlarged circle of FIG. 2, the angle (θ) at which the first linear electrode portion 2011 and the second linear electrode portion 2013 forming the electrostatic electrode 20 intersect each other is 15 ° to 90 °. Good. More preferably, the angle (θ) may be 15 ° to 45 °. When deviating from the above-described angle (θ) range, the electrostatic electrode 20 cannot secure a sufficient aperture ratio. Therefore, the angle (θ) is adjusted to the above-described range.

  On the other hand, as shown in the enlarged circle of FIG. 2, the pitch (P) of the first linear electrode portions 2011 may be 250 μm to 750 μm. When the pitch (P) is too large, the touch sensitivity of the display area for touch may decrease. When the pitch (P) is too small, the first linear electrode portion 2011 is formed very finely, and the first linear electrode portion 2011 is observed with the naked eye, and light cannot be transmitted appropriately. When adjusting the pitch of the 1st linear electrode part 2011 to the range mentioned above, the 1st linear electrode part 2011 cannot be seen well with the naked eye. Therefore, light can be appropriately transmitted. This applies to the second linear electrode portion 2013 in the same manner.

  FIG. 3 is a flowchart schematically showing a method for manufacturing the touch panel 100 of FIG. The manufacturing method of the touch panel 100 in FIG. 3 is only for illustrating the present invention, and the present invention is not limited to this.

  As shown in FIG. 3, the method for manufacturing the touch panel 100 includes: i) providing a substrate (S10); ii) providing a first electrostatic electrode, a second electrostatic electrode, a bridge electrode, and an extraction electrode ( S20), iii) low temperature firing of the electrode (S30), and iv) providing a transparent insulating layer and another bridge electrode (S40). In addition, the manufacturing method of the touch panel 100 may further include other steps as necessary.

  First, in step (S10), a substrate is provided. The substrate may be made of a material such as glass, PET (polyethylene terephthalate), PEN (polyethylene naphthalate), PI (polyimide), or acrylic. In order to manufacture the touch panel 100 by passing through the low temperature baking of a step (S40), you may manufacture a board | substrate with a resin raw material.

  In the step (S20), the first electrostatic electrode, the second electrostatic electrode, the first bridge electrode, and the extraction electrode are offset printed on the substrate. The extraction electrode is connected to the first electrostatic electrode located on one end side of the first electrostatic electrode and the second electrostatic electrode located on one end side of the second electrostatic electrode. These may be simultaneously offset printed. When all the electrodes are formed at the same time in the step (S20), the manufacturing process is facilitated and the manufacturing cost can be reduced. Furthermore, there is no height difference between the extraction electrode and the other electrodes. Meanwhile, the first bridge electrode connects the first electrostatic electrode, and the second electrostatic electrode is spaced apart from the first electrostatic electrode while being separated from each other.

  When the electrode is offset printed on the substrate in the step (S20), the average particle size of the electrode material is preferably 30 nm to 3000 nm. Preferably, the average particle size of the material may be 50 nm to 100 nm. When the average particle size of the material is too small, the specific surface area becomes extremely large and it is difficult to manufacture with a paste. If the average particle size of the material is too large, the firing temperature of the electrode is increased in step (S40), and low-temperature firing becomes impossible. In order to sinter the electrode at a low temperature, the material must be able to appropriately absorb a small amount of heat, so the average particle size of the electrode material is adjusted to the above-described range. Furthermore, when a raw material is silver, it is preferable that silver has a wire shape or a spherical shape. In this case, the heat absorption rate during the firing process of the material can be further increased, and the electrical conductivity of the electrode of the touch panel can be further increased. Since the detailed contents of the offset process can be easily understood by those having ordinary knowledge in the technical field to which the present invention belongs, the detailed description thereof will be omitted.

  In the step (S30), the electrode formed on the substrate is fired at a low temperature. Here, the baking temperature may be 100 ° C to 300 ° C. If the firing temperature is too low, organic volatile substances may remain on the electrode and the electrical conductivity may decrease, resulting in a longer process time. Further, if the firing temperature is too high, it is unsuitable for using a resin as the substrate. Therefore, the firing temperature is adjusted to the range described above.

  In step S40, a transparent insulating layer and another bridge electrode, that is, a second bridge electrode is provided. That is, a transparent insulating layer is provided on the second bridge electrode in order to electrically insulate the second electrostatic electrodes spaced apart from each other from the first electrostatic electrode. The transparent insulating layer may be manufactured by a method such as screen printing, and since the insulating layer itself is transparent, light is appropriately transmitted.

  Next, a second bridge electrode that connects the second electrostatic electrodes and the like to each other is formed on the transparent insulating layer. Therefore, the first electrostatic electrode and the second electrostatic electrode are electrically connected to each other by the bridge electrode while being electrically insulated from each other. Here, the second bridge electrode may be screen printed or offset printed. When the second bridge electrode is provided as a transparent conductive layer, since the light is appropriately transmitted through the second bridge electrode, the second bridge electrode need not be manufactured in a mesh shape and may be manufactured in a planar shape. As the material for the transparent insulating layer and the second bridge electrode, a photo-curable material may be used, and there is no problem even if these are not baked.

  When the offset process is not used, a lamination process or a screen printing process may be used. In the lamination process, after patterning the touch screen, it is difficult to maintain a precise tolerance during interlayer lamination, and the defect rate may increase due to bubbles, foreign matter, scratches, and the like. Also, since the sheet is thin, handling is difficult and wrinkles may approach. In addition, signal interference and aperture ratio may be reduced due to shift or overlap. In the screen printing process, it is difficult to accurately maintain the alignment tolerance between the electrostatic electrode made of ITO and the extraction electrode. That is, precise process control is difficult, and it is difficult to visually confirm ITO. When all the electrodes are screen-printed, since the silver paste must be fired at a high temperature, cracks may occur in the fine line width of the electrostatic electrode.

  The substrate fired at a low temperature by the manufacturing method of the touch panel 100 undergoes processes such as chamfering and cleaning or grinding. Through this process, a one-layer touch panel is manufactured.

  FIG. 4 is an exploded schematic view of a touch panel 200 according to the second embodiment of the present invention. The touch panel 200 in FIG. 4 is similar to the touch panel 100 in FIG. 1 except that the electrostatic electrodes are individually formed by using two substrates. The detailed description thereof will be omitted.

  As illustrated in FIG. 4, the touch panel 200 includes a first substrate 12, a second substrate 14, a first electrostatic electrode 201, a second electrostatic electrode 203, and an adhesive film 50. In addition, the touch panel 200 may further include other elements as necessary.

  A second electrostatic electrode 203 is formed below the first substrate 12, and a first electrostatic electrode 201 is formed on the second substrate 14. That is, the first electrostatic electrode 201 is in contact with the plate surface 141 of the second substrate 14, and the second electrostatic electrode 203 is in contact with the plate surface 121 of the first substrate 12. Since the adhesive film 50 having electrical insulation is located between the first electrostatic electrode 201 and the second electrostatic electrode 203, the first electrostatic electrode 201 and the second electrostatic electrode 203 are electrically insulated from each other. The adhesive film 50 is located between the first substrate 12 and the second substrate 14, and by removing the gap formed between the two, it is possible to prevent a phenomenon in which the light transmittance is reduced by the air confined in the gap. it can. As the adhesive film 50, an optical adhesive film (OCA) or the like may be used.

  When the touch panel 200 of FIG. 4 is manufactured, first, the second electrostatic electrode 203 and the first electrostatic electrode 201 may be formed on the first substrate 12 and the second substrate 14 respectively by an offset process. Next, after baking the 1st electrostatic electrode 201 and the 2nd electrostatic electrode 203, you may manufacture the touch panel 200 by adhering both with an adhesive film.

  FIG. 5 schematically shows the touch panel 300 according to the third embodiment of the present invention in an exploded manner. The enlarged circle in FIG. 5 schematically shows the cross-sectional structure of the touch panel 300. The touch panel 300 in FIG. 5 is similar to the touch panel 100 in FIG. 1 except that a single substrate 16 is used and electrostatic electrodes 201 and 203 are individually formed on the top and bottom of the substrate 16, respectively. Therefore, the same reference numerals are used for the same parts, and detailed description thereof is omitted.

  As shown in the enlarged circle of FIG. 5, the first electrostatic electrode 201 is formed on the first plate surface 161 of the substrate 16, and the second electrostatic electrode 203 is formed on the second plate surface 163 of the substrate 16. . Since the first plate surface 161 faces the + z-axis direction and the second plate surface 163 faces the -z-axis direction, the first plate surface 161 and the second plate surface 163 face away from each other. The substrate 16 insulates the first electrostatic electrode 201 and the second electrostatic electrode 203 from each other.

  Here, the first electrostatic electrode 201 and the second electrostatic electrode 203 have a mesh shape and are offset printed. Therefore, the low-priced touch panel 300 can be manufactured by an easy process.

  Although the present invention has been described in the above description, it is easy for those skilled in the art to which the present invention belongs that various modifications and variations can be made without departing from the concept and scope of the appended claims. Will understand.

100, 200, 300: Touch panel 10, 12, 14, 16: Substrate 121, 141, 161, 163: Substrate surface 20, 201, 203, 205: Electrostatic electrode 40: Extraction electrode 42: Extraction terminal 30, 301 303: Bridge electrode 2011, 2013: Linear electrode part 2015: Periphery 50: Adhesive film D: Display area ND: Non-display area

Claims (12)

substrate,
A plurality of electrostatic electrodes positioned within the display area for touch and spaced apart from each other while being positioned on the substrate; and a bridge electrode connecting the plurality of electrostatic electrodes to each other
One electrostatic electrode of the plurality of electrostatic electrodes is:
A plurality of first linear electrode portions, and a plurality of second linear electrode portions intersecting with the plurality of first linear electrode portions,
The first linear electrode part forming the periphery of the one electrostatic electrode has a length larger than the length of the other first linear electrode part, and forms the periphery of the other connected electrostatic electrode. ,
The second linear electrode part forming the periphery of the one electrostatic electrode has a length larger than the length of the other second linear electrode part, and forms the periphery of the other connected electrostatic electrode. ,
The bridge electrode is
A first linear electrode portion forming the periphery,
Another first linear electrode part adjacent to the first linear electrode part forming the peripheral edge, and a second linear electrode part forming the peripheral edge,
A touch panel formed by another second linear electrode part adjacent to the second linear electrode part forming the periphery.   An extraction electrode positioned on the substrate, positioned in a non-display area surrounding the display area, and extracted from an electrostatic electrode adjacent to the non-display area among the plurality of electrostatic electrodes; The touch panel as set forth in claim 1, wherein the plurality of electrostatic electrodes and the extraction electrode are integrally formed by offset printing. Each of the plurality of electrostatic electrodes is
A first electrostatic electrode extending in a first direction, or a second electrostatic electrode extending in a second direction intersecting the first direction,
Each of the bridge electrodes
A first bridge electrode that connects the first electrostatic electrodes to each other in a first direction; or a second bridge electrode that connects the second electrostatic electrodes to each other in a second direction;
The touch panel as set forth in claim 1, wherein one first bridge electrode of the first bridge electrodes and one second bridge electrode of the second bridge electrodes cross each other while being insulated from each other. The touch panel as set forth in claim 3 , wherein a transparent insulating layer is located between the first bridge electrode and the second bridge electrode.   The touch panel according to claim 4, wherein the transparent insulating layer is formed by screen printing.   The touch panel according to claim 3, wherein the second bridge electrode is formed of a transparent conductive layer. substrate,
A plurality of first electrostatic electrodes formed in the touch display area and spaced apart from each other while being positioned on the first plate surface of the substrate;
A first bridge electrode connecting the plurality of first electrostatic electrodes to each other;
A plurality of second electrostatic electrodes formed in the touch display area and spaced apart from each other while being positioned on a second plate surface facing the first plate surface of the substrate and facing away from the first plate surface; A second bridge electrode connecting the second electrostatic electrodes to each other;
The plurality of first electrostatic electrodes and the plurality of second electrostatic electrodes have a mesh shape and are offset printed,
One electrostatic electrode of the plurality of first electrostatic electrodes and the plurality of second electrostatic electrodes intersects with the plurality of first linear electrode portions and the plurality of first linear electrode portions. Consisting of a plurality of second linear electrode portions,
The first linear electrode part forming the periphery of the one electrostatic electrode has a length larger than the length of the other first linear electrode part, and forms the periphery of the other connected electrostatic electrode. ,
The second linear electrode part forming the periphery of the one electrostatic electrode has a length larger than the length of the other second linear electrode part, and forms the periphery of the other connected electrostatic electrode. ,
Each of the first bridge electrode and the second bridge electrode is
A first linear electrode portion forming the periphery,
Another first linear electrode part adjacent to the first linear electrode part forming the peripheral edge, and a second linear electrode part forming the peripheral edge,
A touch panel formed by another second linear electrode portion adjacent to the second linear electrode portion forming the periphery. Providing a substrate,
Providing an electrode on the substrate; and low-temperature firing the electrode;
Providing the electrode comprises:
A plurality of first electrostatic electrodes arranged in a first direction and a second direction of the substrate and spaced apart from each other;
A plurality of first bridge electrodes connecting the first electrostatic electrodes to each other in a first direction of the substrate;
Located between the plurality of first electrostatic electrodes, spaced apart from the plurality of first electrostatic electrodes and the first bridge electrode, and spaced apart from each other, arranged in a first direction and a second direction of the substrate A plurality of second electrostatic electrodes,
And a drawer connected to one first electrostatic electrode located on one end side of the plurality of first electrostatic electrodes and one second electrostatic electrode located on the other end side of the plurality of second electrostatic electrodes, respectively. Forming electrodes by offset printing,
One electrostatic electrode of the plurality of first electrostatic electrodes and the plurality of second electrostatic electrodes is:
A plurality of first linear electrode portions, and a plurality of second linear electrode portions intersecting with the plurality of first linear electrode portions,
The first linear electrode part forming the periphery of the first electrostatic electrode has a length larger than the length of the other first linear electrode part, and the periphery of another connected first electrostatic electrode Form the
The second linear electrode part that forms the other peripheral edge of the first electrostatic electrode has a length larger than the length of the other second linear electrode part, and is connected to another first electrostatic electrode part. Forming the other periphery of the electrode,
The first bridge electrode is
A first linear electrode portion forming the periphery,
Another first linear electrode part adjacent to the first linear electrode part forming the peripheral edge, and a second linear electrode part forming the peripheral edge,
A method for manufacturing a touch panel, which is formed by another second linear electrode portion adjacent to the second linear electrode portion forming the peripheral edge.   The touch panel manufacturing method according to claim 8, wherein the plurality of first electrostatic electrodes, the plurality of second electrostatic electrodes, the first bridge electrode, and the extraction electrode are simultaneously offset-printed. The method further comprises: providing a transparent insulating layer on the first bridge electrode; and providing a second bridge electrode that connects the plurality of second electrostatic electrodes to each other on the transparent insulating layer. A method for manufacturing the touch panel according to claim 9.   The method for manufacturing a touch panel according to claim 10, wherein the transparent insulating layer is provided by being screen-printed.   The touch panel manufacturing method according to claim 10, wherein the second bridge electrode is screen-printed or offset-printed.