JP6568982B2 - Touchpad structure using dummy pattern for capacitive touch screen - Google Patents

Description

  The present invention relates to a touch pad structure for a capacitive touch screen, and more particularly, to a touch pad structure using a dummy pattern for a capacitive touch screen.

  In recent years, various mobile terminals such as mobile phones, PDAs, and MP3 players have been downsized in order to improve portability. On the other hand, in order to provide an excellent quality video using such a portable terminal, a display applied to the mobile terminal has been enlarged. In order to satisfy the demands for miniaturization of the mobile terminal itself and the enlargement of the display applied thereto, a touch screen system that allows user input to the display itself is mainly employed. In addition, LCD (Liquid Crystal Display), PDP (Plasma Display Panel), OLED (Organic Light Emitting Diode), AMOLED (Active Matrix Organic Light Emitter, etc.) are adopted.

  Such a touch screen is a device that enables a user to input by grasping the coordinates of a touched position when a user touches a character or a specific position directly displayed on the screen with a human hand or a touch pen. is there. Such touch screens include a capacitance method, a resistance film method, a surface ultrasonic method, an infrared method, and the like depending on the operation principle.

  In particular, a capacitive touch screen detects a change in capacitance formed by a conductive sensor pattern with other surrounding sensor patterns or ground electrodes when touched by a human hand or object. The position is converted into an electrical signal.

  At this time, in order to clearly determine the contact position of the contact surface, the sensor pattern is connected to the first sensor pattern formed to be connected along the first direction, or to the X direction pattern and the second direction. The second sensor pattern or the Y direction pattern formed to be configured is configured.

  The first sensor pattern and the second sensor pattern are arranged in different layers. For example, the first sensor pattern is located in the upper layer, the second sensor pattern is located in the lower layer, and dummy patterns are arranged between the first sensor patterns and between the second sensor patterns.

  FIG. 1A to FIG. 1B are diagrams illustrating arrangements of sensor patterns and dummy patterns according to the related art.

  Referring to FIG. 1a, it is confirmed that the dummy patterns 111 are disposed between the sensor patterns 110 in the touch pad according to the related art, and the dummy patterns are not connected to each other. At the time of a partial short circuit between the sensor pattern and the dummy pattern, current flows from the sensor pattern into one dummy pattern.

  Referring to FIG. 1b, it is confirmed that the dummy patterns 111a are disposed between the sensor patterns 110 in the touch pad according to the related art, and the dummy patterns are also connected to each other (111b). When a partial short circuit occurs between the sensor pattern and the dummy pattern, current flows from the sensor pattern to the entire dummy pattern.

  2a to 2b are diagrams for explaining a malfunction due to a short circuit in the touch panel.

  Referring to FIG. 2a, when a specific part of the sensor pattern in the touch pad is touched, the change in capacitance of this part can be recognized by each sensor connected to the X axis and the Y axis to grasp the touch coordinates. it can.

  Referring to FIG. 2b, when a partial short circuit occurs between the sensor pattern and the dummy pattern, when a specific part of the sensor pattern is touched, current flows from the sensor pattern to the dummy pattern.

  In particular, when the dummy patterns are connected to each other than when the dummy patterns are not connected to each other, when a partial short circuit occurs between the sensor pattern and the dummy pattern, the current flowing from the sensor pattern flows into the entire dummy pattern. For this reason, an excessive change in electrostatic capacitance is caused, which acts as a disturbing element for determining an accurate contact position.

  Therefore, in order to solve such problems of the prior art, the present invention arranges a dummy pattern between the sensor patterns, and divides and forms the dummy pattern to be arranged into a number of preset forms. An object of the present invention is to provide a structure of a touch pad using a dummy pattern for a capacitive touch screen.

  The present invention also provides a dummy pattern for a capacitive touch screen, in which a dummy pattern is arranged between sensor patterns, and a mesh constituting the arranged dummy pattern is regularly or irregularly disconnected. Another object of the present invention is to provide a structure of a touch pad that uses the touch pad.

  In the present invention, a dummy pattern is arranged between sensor patterns, located between the sensor pattern and the dummy pattern, and physically separated by a preset distance along the boundary surface between the sensor pattern and the dummy pattern. It is still another object of the present invention to provide a structure of a touch pad using a dummy pattern for a capacitive touch screen that forms an auxiliary dummy pattern to be separated.

  However, the object of the invention is not limited to the above-described matters, and other objects not described above will be clearly understood by those skilled in the art from the following description.

  In order to achieve the above-described object, a touch pad structure using a dummy pattern for a capacitive touch screen according to an aspect of the present invention includes a first sensor pattern formed in a first direction and the first sensor pattern. A first sensor part in which a first dummy pattern is arranged between one sensor pattern, and a second sensor pattern that overlaps the first sensor part and is formed in a second direction intersecting the first direction; and A second sensor unit in which a second dummy pattern is arranged between the second sensor patterns is provided, and each of the first dummy pattern and the second dummy pattern includes at least two sub dummy patterns that are physically separated. It is characterized by becoming.

  Preferably, the first dummy pattern is disposed in a region corresponding to the position of the second sensor pattern, and the second dummy pattern is disposed in a region corresponding to the position of the first sensor pattern. .

  Preferably, each of the first dummy pattern and the second dummy pattern includes at least two sub-dummy patterns, and includes a different number of sub-dummy patterns.

  Preferably, the boundary lines of the at least two or more sub-dummy patterns separated from each other are formed so as to be parallel to the direction of the mesh constituting the dummy pattern.

  Preferably, the boundary lines of the at least two or more sub-dummy patterns separated from each other are formed so as not to be parallel to the direction of the mesh constituting the dummy pattern.

  Preferably, each of the first dummy pattern and the second dummy pattern includes two or more sub-dummy patterns having a preset form, and each of the two or more sub-dummy patterns includes the first dummy pattern or The second dummy pattern is formed to have the same shape as the entire outer shape and to have an equal area.

  Preferably, each of the first dummy pattern and the second dummy pattern includes two or more sub-dummy patterns having a preset form, and each of the two or more sub-dummy patterns includes the first dummy pattern or The second dummy pattern has a shape different from that of the entire outline, but is formed to have an equal area.

  Preferably, each of the first dummy pattern and the second dummy pattern includes two or more sub-dummy patterns having a preset form, and each of the two or more sub-dummy patterns includes the first dummy pattern or The second dummy pattern is formed to have a shape different from the shape of the entire outline of the second dummy pattern and to have a different area.

  Preferably, each of the first dummy pattern and the second dummy pattern includes at least two or more sub-dummy patterns that are physically separated by regularly or irregularly disconnecting a mesh therein. And

  Preferably, each of the first dummy pattern and the second dummy pattern can be divided by breaking the mesh regularly within a preset range, and the lengths of the broken lines are equal. It is characterized by being.

  Preferably, each of the first dummy pattern and the second dummy pattern can be divided by irregularly breaking the mesh within a preset range so that the lengths of the broken lines are different from each other. It is formed.

  The touch pad structure using the auxiliary dummy pattern for the capacitive touch screen according to the present invention may be located between the first sensor pattern and the first dummy pattern, A first auxiliary dummy pattern formed so as to be physically separated from the first dummy pattern by being separated along a boundary surface between the first dummy patterns; and between the second sensor pattern and the second dummy pattern. And a second auxiliary dummy pattern formed so as to be physically separated from the second dummy pattern by being separated along a boundary surface between the second sensor pattern and the second dummy pattern. Features.

  According to another aspect of the present invention, the structure of the touch pad using the auxiliary dummy pattern for the capacitive touch screen is between the first sensor pattern formed in the first direction and the first sensor pattern. A first sensor part in which a first dummy pattern and a first auxiliary dummy pattern are arranged; and a second sensor pattern that overlaps the first sensor part and is formed in a second direction intersecting the first direction; A second sensor part in which a second dummy pattern and a second auxiliary dummy pattern are arranged between the second sensor patterns is provided, and the first auxiliary dummy pattern is interposed between the first sensor pattern and the first dummy pattern. And the first auxiliary dummy pattern is separated and physically separated along a boundary surface between the first sensor pattern and the first dummy pattern. The second auxiliary dummy pattern is located between the second sensor pattern and the second dummy pattern, and the second auxiliary dummy pattern is located on a boundary surface between the second sensor pattern and the second dummy pattern. It is characterized in that it is formed so as to be separated along the physical separation.

  Preferably, each of the first auxiliary dummy pattern and the second auxiliary dummy pattern is formed to be separated along an outline of the corresponding first sensor pattern and the second sensor pattern, The second sensor pattern is formed to have the same shape as the outline of the second sensor pattern.

  Preferably, each of the first auxiliary dummy pattern and the second auxiliary dummy pattern is formed to be physically separated from the first dummy pattern and the second dummy pattern, and the first dummy pattern and the second dummy pattern are formed. Each of the dummy patterns is formed in combination with a dummy connection part.

  Preferably, each of the first auxiliary dummy pattern and the second auxiliary dummy pattern is formed to be physically separated from the first dummy pattern and the second dummy pattern, and the first dummy pattern and the second dummy pattern are formed. Each of the dummy patterns is formed to be physically separated from the dummy connection part.

  Preferably, each of the first auxiliary dummy pattern and the second auxiliary dummy pattern is formed to be physically separated from the first dummy pattern and the second dummy pattern, and the first dummy pattern and the second dummy pattern are formed. It is characterized by being formed so as to surround the outline of the dummy pattern.

  According to another aspect of the present invention, a touch pad structure using a dummy pattern for a capacitive touch screen has a plurality of sensor patterns formed on a substrate to sense a touch signal, the plurality of sensor patterns. Each of the plurality of dummy patterns includes a plurality of wiring electrodes connected to each other to transmit the touch signal, and a plurality of dummy patterns formed in spaces between the plurality of sensor patterns or the plurality of wiring electrodes. It consists of two or more sub-dummy patterns that are physically separated.

  Preferably, the plurality of sensor patterns include a plurality of first sensor patterns arranged in a first direction on one surface of the substrate, and a first surface intersecting the first direction on the same surface on which the first sensor patterns are arranged. A plurality of second sensor patterns arranged in two directions are provided, and the dummy patterns are arranged in a space formed by connecting the wiring electrodes to the first sensor patterns arranged between the second sensor patterns. It is characterized by being.

  Preferably, the plurality of sensor patterns are a plurality of first sensor patterns arranged in a first direction on one surface of the substrate, and a plurality of sensors arranged in a second direction intersecting the first direction on the other surface of the substrate. The second sensor pattern is provided.

  Preferably, the plurality of dummy patterns are formed to have different sizes depending on a size of a space formed between the plurality of sensor patterns or the plurality of wiring electrodes.

  Preferably, each of the plurality of dummy patterns includes at least two or more sub dummy patterns, and includes a different number of sub dummy patterns.

  Preferably, the boundary lines of the at least two or more sub-dummy patterns separated from each other are formed so as to be parallel to the direction of the mesh constituting the dummy pattern.

  Preferably, the boundary lines of the at least two or more sub-dummy patterns separated from each other are formed so as not to be parallel to the direction of the mesh constituting the dummy pattern.

  Preferably, each of the plurality of dummy patterns includes two or more sub-dummy patterns having a preset form, and each of the two or more sub-dummy patterns is different from an overall outline shape of the dummy pattern. It has a shape and is formed to have different areas.

  Preferably, each of the plurality of dummy patterns includes at least two or more sub-dummy patterns that are physically separated by regularly or irregularly disconnecting a mesh therein.

  Preferably, each of the plurality of dummy patterns is formed such that the mesh is irregularly broken and divided within a preset range, and the lengths of the broken lines are different from each other.

  According to another aspect of the present invention, a touch pad structure using a dummy pattern for a capacitive touch screen has a plurality of sensor patterns formed on a substrate to sense a touch signal, the plurality of sensor patterns. A plurality of wiring electrodes connected to each other to transmit the touch signal, the plurality of sensor patterns or a plurality of dummy patterns formed in spaces between the plurality of wiring electrodes, and the plurality of sensor patterns and the plurality of A plurality of auxiliary dummy patterns formed between the dummy patterns or formed between the plurality of wiring electrodes and the plurality of dummy patterns can be provided.

  Preferably, the plurality of dummy patterns are formed to have different sizes depending on a size of a space formed between the plurality of sensor patterns or the plurality of wiring electrodes.

  Preferably, each of the large number of dummy patterns and the large number of auxiliary dummy patterns is divided into a large number and formed.

  Thus, according to the present invention, dummy patterns are arranged between sensor patterns, and the dummy patterns to be arranged are formed by dividing them into a number of preset forms, or the meshes constituting the arranged dummy patterns are regularly or Auxiliary dummy that is formed by irregular disconnection or physically separated by a predetermined distance along the boundary surface between the sensor pattern and the dummy pattern, located between the sensor pattern and the dummy pattern By forming a pattern, even if a partial short circuit occurs between the sensor pattern and the dummy pattern, there is an effect that the safety of the function can be ensured.

  In addition, the present invention has the effect of minimizing the current flowing from the sensor pattern to the dummy pattern by dividing the dummy pattern or breaking the mesh, thereby improving the operation of the sensor.

  In the present invention, even if the sensor pattern and the dummy pattern are partially short-circuited, since the short-circuit range is small, there is no problem in using the product to such an extent that the product itself is discarded. There is an effect that can be done.

FIG. 1A is a diagram illustrating an arrangement of sensor patterns and dummy patterns according to the related art. FIG. 1B is a diagram illustrating an arrangement of sensor patterns and dummy patterns according to the related art. It is a figure for demonstrating the malfunctioning by the short circuit in a touch panel. It is a figure for demonstrating the malfunctioning by the short circuit in a touch panel. It is the figure which showed the form of the sensor pattern which concerns on one Embodiment of this invention. FIG. 4A is an exemplary view illustrating a sensing unit, a coupling unit, and a dummy unit of the touch screen sensor substrate according to an embodiment of the present invention. FIG. 4B is an exemplary view illustrating a sensing unit, a coupling unit, and a dummy unit of the touch screen sensor substrate according to an embodiment of the present invention. FIG. 4C is an exemplary view illustrating a sensing unit, a coupling unit, and a dummy unit of the touch screen sensor substrate according to an embodiment of the present invention. FIG. 3 is an enlarged view illustrating a sensing unit, a coupling unit, and a dummy unit of a touch screen sensor substrate according to an embodiment of the present invention. FIG. 4 is an exemplary diagram illustrating a mesh pattern forming a sensing unit, a coupling unit, and a dummy unit of a touch screen sensor substrate according to an embodiment of the present invention. FIG. 7a is a cross-sectional view of a touch screen sensor substrate according to an embodiment of the present invention. FIG. 7 b is a cross-sectional view of a touch screen sensor substrate according to an embodiment of the present invention. FIG. 7c is a cross-sectional view of a touch screen sensor substrate according to an embodiment of the present invention. FIG. 8a is an exemplary view showing a configuration of a touch screen sensor according to an embodiment of the present invention. FIG. 8b is a cross-sectional view of a touch screen sensor according to an embodiment of the present invention. FIG. 9 a is a first view illustrating a touch pad according to an embodiment of the present invention. FIG. 9b is a first view illustrating a touch pad according to an embodiment of the present invention. FIG. 9c is a first view illustrating a touch pad according to an embodiment of the present invention. FIG. 10a is a second view illustrating a touch pad according to an embodiment of the present invention. FIG. 10b is a second view illustrating a touch pad according to an embodiment of the present invention. FIG. 10c is a second view illustrating a touch pad according to an embodiment of the present invention. FIG. 11a is a first diagram illustrating a dummy pattern according to an embodiment of the present invention. FIG. 11b is a first diagram illustrating a dummy pattern according to an embodiment of the present invention. FIG. 12a is a second diagram illustrating a dummy pattern according to an embodiment of the present invention. FIG. 12 b is a second view illustrating a dummy pattern according to an embodiment of the present invention. FIG. 13a is a third diagram illustrating a dummy pattern according to an embodiment of the present invention. FIG. 13b is a third diagram illustrating a dummy pattern according to an embodiment of the present invention. FIG. 14a is a fourth diagram showing a dummy pattern according to an embodiment of the present invention. FIG. 14b is a fourth diagram illustrating a dummy pattern according to an embodiment of the present invention. FIG. 6 is a fifth diagram showing a dummy pattern according to an embodiment of the present invention. It is the figure which showed the arrangement | positioning form of the auxiliary dummy pattern which concerns on one Embodiment of this invention. It is FIG. 6 which showed the form of the dummy pattern which concerns on one Embodiment of this invention. FIG. 18a is a seventh diagram illustrating a dummy pattern according to an embodiment of the present invention. FIG. 18b is a seventh diagram illustrating a dummy pattern according to an embodiment of the present invention. It is the figure which showed the structure of the touch screen sensor which concerns on other embodiment of this invention. It is the figure which expanded and showed the shape of the sensor pattern, dummy pattern, and wiring electrode which were shown in FIG. It is the figure which expanded and showed the arrangement position and form of the dummy pattern shown in FIG.

  Hereinafter, a structure of a touch pad using a dummy pattern for a capacitive touch screen according to an embodiment of the present invention will be described with reference to the accompanying drawings. A detailed description will be given focusing on the parts necessary for understanding the operation and action of the present invention.

  In the description of the constituent elements of the present invention, different reference numerals may be given depending on the drawings even if the constituent elements have the same name, and the same reference numerals may be given even in different drawings. However, even in such a case, it does not mean that the corresponding component has different functions depending on the embodiment, or does not mean that the same function is provided in different embodiments. The function of the element must be determined based on the description of each component in the applicable embodiment.

  In particular, in the present invention, dummy patterns are arranged between sensor patterns, and 1) a dummy pattern to be arranged is divided into a large number of sub-dummy patterns having a preset form, or 2) an arrangement. The internal mesh constituting the dummy pattern to be formed is formed by regularly or irregularly disconnecting, or 3) located between the sensor pattern and the dummy pattern, along the boundary surface between the sensor pattern and the dummy pattern A new touch pad or sensor substrate structure is proposed in which auxiliary dummy patterns that are physically separated by a predetermined distance are formed.

  The reason why the dummy pattern arranged between the sensor patterns is divided into sub-dummy patterns or divided into a dummy pattern and an auxiliary dummy pattern is that current flowing from the sensor pattern flows into the entire dummy pattern at the time of a short circuit. Is to prevent.

  FIG. 3 is a diagram showing a sensor pattern according to an embodiment of the present invention.

  As shown in FIG. 3, the sensor patterns according to the present invention may include a first sensor pattern 110 for sensing the X coordinate and a second sensor pattern 210 for sensing the Y coordinate, which are crossed with each other.

  For example, the first sensor pattern 110 is a pattern for sensing the X coordinate, and can be regularly formed in a first direction, for example, the vertical direction. The second sensor pattern 210 is a pattern for sensing the Y coordinate, and can be regularly formed in the second direction, for example, the lateral direction.

  The first sensor pattern 110 includes a plurality of first sensing units 110a and a connecting unit 110b that couples the first sensing units 110a. Similarly, the second sensor pattern 210 includes a plurality of second sensing units 210a, The connection part 210b which connects the 2nd sensing part 210a can be provided.

  4A to 4C are exemplary views illustrating a sensing unit and a coupling unit of the touch screen sensor substrate according to the present embodiment.

  Referring to FIG. 4A, the touch screen sensor substrate according to the present embodiment has a plurality of sensing units 110a formed of electrodes connected to one surface of a substrate in a pattern in a certain direction, and the same or similar direction as the pattern. The connecting part 110b is formed of electrodes connected in a directional pattern and connects the sensing part 110a.

  Referring to FIG. 4b, in the present embodiment, the touch screen sensor substrate is formed of electrodes adjacent to the sensing unit 110a and connected in a pattern having the same or similar direction as the pattern, and the sensing unit 110a. A large number of dummy patterns 111a that reduce the visibility of the image are used.

  Here, the sensing unit 110a and the dummy pattern are electrodes provided to sense a user's touch signal. In the present invention, the sensing unit 110a and the dummy pattern are formed of a conductive material, and the conductive material may be opaque.

  Further, the dummy pattern 111a is an electrode formed adjacent to or adjacent to the sensing unit 110a, and is formed as a dummy having a shape similar to that of the sensing unit 110a, as the name implies. And an electrode formed in an inactive state or a combination thereof so that a user's touch signal cannot be detected. Therefore, the sensing unit 110a and the dummy pattern 111a are formed to be electrically insulated. The reason why the dummy pattern 111a is formed on the base material is that the sensing unit 110a that is not formed of the transparent electrode material is formed on the entire surface of the touch screen sensor, and prevents the sensing unit 110a from being visually recognized by the external light applied to the touch screen sensor. Because.

  4A to 4B, the sensing unit 110a and the dummy pattern 111a are formed in a linear shape. However, the present invention is not limited to this, and various patterns may be used. For example, the entire shape of the sensing unit 110a can be formed in a diamond shape, a trapezoidal shape, a rhombus shape, or the like.

  On the other hand, the electrodes are provided to send a touch signal sensed by the sensing unit 110a to an external driving circuit (not shown), and when the sensing unit 110a and the dummy pattern 111 are formed on the substrate. Preferably, they are formed simultaneously. In the present invention, matters relating to the electrode are beyond the scope of the invention, and therefore further detailed explanation thereof is omitted.

  Referring to FIG. 4c, the sensing unit 110a, the dummy pattern 111a, and the sensing connection unit 110b of the touch screen sensor substrate according to the present embodiment are formed of electrodes that are connected in a pattern in a certain direction that is the same or similar to each other. It is preferable. In addition, when a dummy connection part is provided, the dummy connection part is preferably formed of electrodes that are connected in a pattern in a certain direction that is the same or similar to each other.

  In this embodiment, the pattern in a certain direction is a continuous pattern. In this embodiment, as shown in FIG. 3, the pattern formed in a mesh shape in which the lines formed in the certain direction intersect each other. Preferably there is.

  In the present embodiment, the same or similar pattern means that not only the repetition period and the repeated form are the same geometrically in the repetition of the pattern, but also the repetition period and the repeated form are predetermined in software. It is preferable to include a case where it is formed within an acceptable error range. Therefore, in the present embodiment, not only the electrode patterns of the sensing part 110a and the dummy pattern 111a but also the sensing connection part 110b and the dummy connection part 111b that connect them exist, the electrode pattern of the dummy connection part 111b is equal. By doing so, the visibility by which the sensing unit 110a is recognized by the user can be reduced.

  In addition, it is preferable that the pattern in the certain direction is a continuous pattern, and the sensing unit 110a and the dummy pattern 111a are formed by cutting a part of the pattern. In addition, if the pattern is cut off, the sensing portion 110a, the dummy pattern 111a, the sensing connection portion 110b, and the dummy connection portion 111b exist, and the end of the pattern of the dummy connection portion 111b is present. It is preferable to form by opening.

  As described above, part of the pattern is cut off at the boundary between the sensing unit 110a and the dummy pattern 111a because the sensing unit 110a and the dummy pattern 111a are electrically insulated from each other. Accordingly, forming the sensing portions 110a and the dummy patterns 111a so that the ends of the patterns are opened means that the ends are not connected to the frame electrodes as shown in FIG. FIG. 5 is an enlarged view of a part of FIG. 4b. Referring to FIG. 5, by solving the problem that the continuity disappears by connecting to the frame electrode by opening the end, However, when viewed as a whole, the user recognizes that the electrodes are continuous, and the visibility of the sensing unit 110a can be reduced.

  In the present embodiment, the pattern is preferably a mesh-shaped pattern in which lines formed in a certain direction cross each other as shown in FIGS. In the present invention, the mesh shape may include all shaped mesh shapes and non-shaped mesh shapes. The mesh shape in which lines formed in a certain direction cross each other means that a net-like or net-like mesh shape pattern is formed as a whole.

  Further, mesh-shaped lines intersecting each other in the pattern may have the same line width and a pitch that defines the interval between the lines, or may have a predetermined line width or pitch of similarity. preferable. In this embodiment, it is shown in Table 1 that a predetermined filling factor (Fill Factor) is obtained when the line width or the pitch is the same or the line width or the pitch has a preset similarity. It means having a displayed range of values.

  In the present embodiment, mesh-shaped lines that intersect each other are preferably tilted according to a predetermined angle. Referring to FIG. 6, the line formed in the present embodiment has a pattern that is inclined by 45 ° with respect to the horizontal axis, and the inclined shape detects touch input per unit area. The predetermined angle for tilting is determined in order to prevent the occurrence of moire current due to the mutual interference between a pattern in a certain direction and a pattern different from the above pattern. It is preferable that the angle is In the present embodiment, the interference of the pattern different from the pattern may be that the electrode pattern formed on the substrate causes interference when a plurality of substrates that sense touch positions in different directions are stacked, or It may be generated with a pattern formed by a plurality of pixels included in a video information display unit that displays video information.

  The moire phenomenon is a natural interference phenomenon (interference phenomenon) formed when two independent periodic patterns are laminated at a constant angle. The moire pattern means a wave shape curve, ripples, intensity fluctuations in a small bundle (wisp) shape that appears to be layered with a screen display image, and the like.

  7a to 7c are cross-sectional views of a touch screen sensor substrate according to an embodiment of the present invention.

  Referring to FIGS. 7 a to 7 c, the touch screen sensor substrate according to the present embodiment includes a base material 100 b, a resin layer 100 a, and an electrode layer 112.

  The base material 100b is preferably formed of a transparent base material 100b. That is, the substrate 100b has a certain transparency, and the transparent substrate 100b is made of PET (Polyethylene Terephthalate), PI (Polyimide), acrylic (Acryl), polycarbonate (PC), triacetyl cellulose (TAC), polymethyl. The transparent thin film may be formed using at least one of methacrylate (PMMA), polyethersulfone (PES), PEN (Polyethylene Naphthalate), or glass.

  The resin layer 100a is laminated on the base material 100b, and has an inscription patterned on one surface. Specifically, the resin layer 100a is laminated on the transparent substrate 100b, and such an intaglio shape is imprinted on the resin layer 100a using an imprint mold corresponding to the desired intaglio shape. Formed with. That is, an intaglio is formed on the resin layer 100a using a positive mold. As a result, a pattern having one or more indentations is formed. The cross section of the resin layer 100a on which the indentation is formed may have any one indentation shape of a square, a triangle, and a trapezoid. When the mold has a square shape, the indented shape formed on the resin layer 100a is also a square shape. When the mold has a square shape, the mold shape formed on the resin layer 100a is also a triangle. When the positive shape is a trapezoid, it is natural that the negative shape formed on the resin layer 100a is also a trapezoid. In the resin layer 100a, the indentation width may belong to 1 μm to 10 μm, the depth may belong to 1 μm to 10 μm, and the pitch between the inscription may belong to 200 μm to 600 μm. Of course, this is only one embodiment, and the width, depth, and pitch of the intaglio can be variously modified. Furthermore, the resin layer 100a is preferably realized by UV (UltraViolet) resin or thermosetting resin.

  The electrode layer 112 is formed by filling the intaglio with a conductive material, and when the sensing part 110a, the dummy pattern 111, the sensing connection part 110b, and the dummy connection part exist, a dummy connection part. (Not shown) is formed on the electrode layer 112. Here, as an example of the conductive material, copper (Cu), silver (Ag), aluminum (Al), nickel (Ni), chromium (Cr), nickel-phosphorus (Ni-P), or the like can be used. .

  The sensing unit 110a and the dummy pattern 111 can be formed at the same time and are formed of the same conductive material. As described above, the sensing unit 110a is an electrically active electrode that senses and transmits a touch signal. The dummy pattern 111 is an electrically inactive electrode.

  In addition, the touch screen sensor substrate according to the present embodiment has a dummy connection part (not shown) when the sensing part 110a, the dummy pattern 111, the sensing connection part 110b, and the dummy connection part formed on the electrode layer 112 are present. It is preferable to further include a black layer 114 for reducing the visibility of the electrode layer 112, and the black layer 114 is preferably laminated on the indented electrode layer 112 or between the resin layer 100 a and the electrode layer 112. Referring to FIG. 7a, in the present embodiment, the black layer 114 further includes a black layer 114 that is stacked between the resin layer 100a and the electrode layer 112 and surrounds the electrode layer 112 in a negative manner formed in the resin layer 100a. As a result, the visibility of the electrode layer 112 can be reduced. Referring to FIG. 7B according to another embodiment, the electrode layer 112 is formed inside the indentation where the black layer 114 does not surround the electrode layer 112. Are laminated in a form to cover. Accordingly, the sensing substrate according to the present embodiment prevents the electrode layer from being visually recognized from the outside using the black layer. In the present embodiment, the black layer preferably has a conductivity including carbon black and uses a black metal material.

  In addition, referring to FIG. 7c according to another embodiment, the electrode layer 112 may be formed not only on the inside of the resin layer 100a but also on the resin layer 100a. Such an electrode layer 112 can be formed by transferring an engraved conductive material to the resin layer 100a by a lithography process or the like.

  8a to 8b are exemplary views for explaining a touch screen sensor according to a second embodiment of the present invention.

  Referring to FIG. 8a, the first sensor unit 100 and the second sensor unit 200 according to the present embodiment are joined together to form a touch screen sensor. That is, the first sensor unit 100 and the second sensor unit 200 are upper and lower substrates and are joined to each other, and the adhesive layer 300 is placed between them. The adhesive layer 300 may be an optical clear adhesive (OCA) to maintain the transparency of the touch screen sensor.

  The second sensor unit 200 includes a plurality of second sensing units 210a formed of electrodes connected to the other surface of the substrate in a second direction pattern, and a pattern in the same or similar direction as the second direction. And a second sensing connection part 210b for connecting the second sensing part 210. Referring to FIG. 8b, in the present embodiment, the other surface means that one of the substrates is formed when the first sensor unit 100 and the second sensor unit 200 are formed on both sides of the same base material. The other surface of the base material on which the substrate is not formed when the surface is one surface is defined as the other surface. Further, in the present embodiment, the first and second sensor units 100 and 200 are illustrated as being bonded with the adhesive layer 300 as a medium in a state where their backs face each other, but these substrates face each other. Of course, it is also possible to join them. Furthermore, a 1st sensor part and a 2nd sensor part can also be formed in each one surface with respect to a some base material.

  In addition, in the touch screen sensor according to the present embodiment, the first sensor unit 100 is formed of electrodes that are adjacent to the first sensing unit 110a and are connected in a pattern in the same or similar direction as the first pattern. The plurality of first dummy patterns 111 for reducing the visibility of the sensing unit 110a and electrodes connected in a pattern in the same or similar direction as the direction of the first pattern, and connecting the first dummy patterns 111. The first sensing connection part 110b includes a first dummy pattern 111 on a surface corresponding to the second sensing part 210a.

  The second sensor unit 200 is formed of an electrode adjacent to the second sensing unit 210a and connected in a pattern having the same or similar direction as the second pattern, thereby reducing the visibility of the sensing unit 210a. The plurality of second dummy patterns 211 and the touch screen sensor substrate are formed of electrodes connected in a pattern in the same or similar direction as the pattern direction, and a connecting portion (not shown) for connecting the dummy pattern 111. Can be further provided.

  In the present embodiment, the first sensor unit 100 and the second sensor unit 200 are joined by the first sensor unit 110 a formed in the first sensor unit 100 and the second sensor unit 210 a formed in the second sensor unit 200. It is preferable to join in directions orthogonal to each other. That is, if the first direction of the first sensing unit 110a is the y direction on the coordinate axis, the second sensing unit 210a is joined to each other so that the second direction is the x direction on the coordinate axis.

  At this time, a second dummy pattern 211 is formed on the second sensor unit 200 at a position corresponding to (facing) the first sensing unit 110a, and the first sensor unit 100 at a position corresponding to the second sensing unit 210a is the first sensor unit 100a. One dummy pattern 111 is formed. The first dummy pattern 111 is preferably formed at a position on one surface of the base material corresponding to the position of the second sensing unit 210a. On the contrary, the second dummy pattern 211 is formed on the first sensing unit. It is preferable to form at the position of the other surface of the base material corresponding to the position of 110a.

  Referring to FIG. 8b, in this embodiment, a dummy pattern 211 in the Y-axis direction is formed on the touch screen sensor at a position corresponding to the vertical direction of the position of the sensing unit 100a that senses the touch position in the X-axis direction. On the other hand, the dummy pattern 111 in the X-axis direction is positioned on one surface of the substrate at a position corresponding to the position perpendicular to the position of the sensing unit 200a that senses the touch position in the Y-axis direction. . Accordingly, the first sensing unit 100a and the second sensing unit 200a are arranged alternately so that the coordinates can be calculated when the user inputs a touch signal.

  In the present embodiment, as described above, the first sensor unit and the second sensor unit can be formed on one surface and the other surface of the same base material, or can be formed on different base materials. it can.

  Even when the first and second sensor parts are formed on the other base material, the first sensor part and the second sensor part are joined together in a manner similar to the case where the first and second sensor parts are formed on the same base material. It is preferable that the first sensing unit formed in one sensor unit and the second sensing unit formed in the second sensor unit are joined in directions orthogonal to each other. That is, when the first direction of the first sensing unit is the y direction on the coordinate axis, the second direction of the second sensing unit is joined to each other so as to be the x direction on the coordinate axis.

  At this time, a second dummy pattern is formed on the second sensor part at a position corresponding to the first sensing part, and a first dummy pattern is formed on the first sensor part at a position corresponding to the second sensing part. Preferably, the first dummy pattern is formed at a position on the one surface of the base material corresponding to the position of the second sensing unit. On the contrary, the second dummy pattern is located at the position of the first sensing unit. It is preferable to form at the position of the other surface of the corresponding base material.

  9a to 9c are first views illustrating a touch pad according to an embodiment of the present invention.

  As shown in FIGS. 9a to 9c, the first sensor pattern 110 and the second sensor pattern 210 according to the present invention may be arranged in different layers. For example, the first sensor pattern 110 may be disposed on the first sensor unit 100 that is an upper layer, and the second sensor pattern 210 may be disposed on the second sensor unit 200 that is a lower layer.

  Here, an adhesive layer (not shown) can be placed between the first sensor unit 100 and the second sensor unit 220, and will be described below for the sake of convenience of explanation.

  At this time, as shown in FIG. 9a, dummy patterns 111 and 211 can be disposed between the first sensor patterns 110 and the second sensor patterns 210, respectively. It is a pattern for satisfy | filling, Comprising: The function which senses a contact position like a sensor pattern is not performed.

  For example, the first dummy patterns 111 can be arranged to intersect between the first sensor patterns 110, and the first dummy patterns 111 can be arranged to intersect in an empty area corresponding to the position of the second sensor pattern 210.

  Similarly, the second dummy patterns 211 can be arranged to intersect between the first sensor patterns 110, and the second dummy patterns 211 can be arranged to intersect in an empty area corresponding to the position of the second sensor pattern 210. it can.

  In addition, as shown in FIG. 9 b, the first dummy patterns 111 may be arranged to intersect between the first sensor patterns 110, and the dummy patterns may not be arranged between the second sensor patterns 210.

  Of course, as shown in FIG. 9c, on the contrary, the second dummy pattern 211 may be disposed only between the second sensor patterns 210, and no dummy pattern is disposed between the first sensor patterns 110. You can also.

  Such a dummy pattern is formed in the same size as the sensor pattern and can be formed of the same material. Furthermore, the dummy patterns can be formed so as not to be connected to other adjacent dummy patterns or to be connected to each other as necessary.

  10a to 10c are second views illustrating a touch pad according to an embodiment of the present invention.

  Referring to FIG. 10a, the touch pad according to the present invention includes a first sensor unit 100 in which the first sensor pattern 110 and the first dummy pattern 111 intersect, and a second sensor pattern 210 and the second dummy pattern 211 in intersection. The second sensor unit 200 can be provided. That is, dummy patterns can be arranged in the spaces between the first sensor patterns 110 and the second sensor patterns 210, respectively.

  At this time, the separation distance between the sensor pattern and the dummy pattern is set within 5 μm to 30 μm, and particularly preferably 15 μm or more. For example, the separation distance between the first sensor pattern and the first dummy pattern or the separation distance between the second sensor pattern and the second dummy pattern can be 15 μm.

  Referring to FIG. 10b, the touch pad according to the present invention includes a first sensor unit 100 in which a first sensor pattern 110 and a first dummy pattern 111 intersect and a second sensor unit 200 in which a second sensor pattern 210 is arranged. Can be provided. That is, a dummy pattern is disposed only in the space between the first sensor patterns 110, and no dummy pattern is disposed in the space between the second sensor patterns 210.

  Referring to FIG. 10 c, the touch pad according to the present invention may dispose dummy patterns only in the spaces between the second sensor patterns 210 without disposing dummy patterns in the spaces between the first sensor patterns 110.

  At this time, according to the present invention, the dummy pattern arranged between the sensor patterns is divided and formed into a number of sub-dummy patterns having a preset form. A method of dividing to have a uniform area having the same shape as the outer shape, 2) A method of dividing to have a uniform area but having a shape different from the whole outer shape, and 3) A virtual dividing pattern Dividing and dividing so as to have a preset angle between the lines in the virtual divided pattern and the mesh in the dummy pattern, 4) Breaking the mesh in the dummy pattern regularly or irregularly A method of dividing can be included.

  When the sensor pattern and the dummy pattern are partially short-circuited by such a dummy pattern division, current flows only from the sensor pattern to the shorted sub-dummy pattern of the dummy pattern, and current is prevented from flowing into the entire dummy pattern. As a result, it is possible to improve the sensor operation by minimizing the permittivity flowing from the sensor pattern to the dummy pattern.

  FIGS. 11a to 11b are first diagrams showing the form of dummy patterns according to an embodiment of the present invention.

  As shown in FIGS. 11a to 11b, in the present invention, each dummy pattern arranged between sensor patterns is divided into a plurality of sub-dummy patterns having a preset form, and the continuity of dummy patterns is increased. A part of a pattern can be cut and divided so as to have the same shape as the entire outline shape and an equal area.

  In FIG. 11a, the breaking line of the dummy pattern 111 and the mesh in the dummy pattern can be formed in parallel.

  In FIG. 11b, the broken line of the dummy pattern 111 and the mesh in the dummy pattern may be formed to have a preset angle so as not to be parallel.

  In other words, although the dummy pattern according to the present invention is divided into a large number, it is equally divided so as to have the same shape as the formation of the entire outline irrespective of the direction of the mesh in the dummy pattern. For example, the rectangular dummy pattern 111 is divided into rectangular sub dummy patterns 111a, 111b, 111c, 111d, 111e, 111f, 111g, 111h, and 111i.

  As shown in FIG. 11b described above, the problem that mutual moire occurs can be suppressed by forming the line where the dummy pattern breaks and the mesh in the dummy pattern to have a preset angle. .

  Since the dummy pattern is partly cut and divided into a large number of sub-dummy patterns, the ends of the divided large number of sub-dummy patterns are opened.

  The fact that a part of the pattern is cut off at the boundary of the sub dummy pattern is to electrically insulate the sub dummy pattern from each other. Being formed means that the end is not connected to the frame electrode.

  By opening the edge of the sub dummy pattern, it solves the problem of continuity disappearing by connecting to the frame electrode, and it is actually separated by a fine interval, but it is totally separated When viewed, the user can recognize the electrode as continuous.

  At this time, when there is no dummy connection part as in the present embodiment, the outline shape of the dummy pattern can be clearly known, but when there is a dummy connection part, it is not so, the dummy connection part and the dummy pattern The outer shape of the dummy pattern must be defined by appropriately dividing the space between them.

  12a to 12b are second diagrams showing the form of dummy patterns according to an embodiment of the present invention.

  As shown in FIGS. 12a to 12b, according to the present invention, the dummy patterns arranged between the sensor patterns are divided into a plurality of sub-dummy patterns having a preset form, and the continuity of the dummy patterns is determined. A part of a pattern can be cut and divided so as to have a shape different from the shape of the entire outline but an equal area.

  FIG. 12a shows a dummy pattern 111 having a hexagonal shape that is not divided.

  In FIG. 12b, the hexagonal dummy pattern 111 is divided to form sub-dummy patterns having shapes different from the overall outline shape, and the areas of the dummy patterns are equal.

  For example, if the area of the hexagonal dummy pattern 111 is 90 as shown in FIG. 12a, nine sub-dummy patterns 111a, 111b, 111c, 111d having a shape different from the hexagonal shape as shown in FIG. 111e, 111f, 111g, 111h, and 111i each have an area of 10.

  As shown in FIG. 12b described above, the dummy pattern is formed so as to have a preset angle between the breaking line and the mesh in the dummy pattern, thereby suppressing the problem that mutual moire occurs. Can do.

  Since the dummy pattern is partly cut and divided into a large number of sub dummy patterns, the ends of the divided large number of sub dummy patterns are formed open.

  FIGS. 13a to 13b are third views showing a dummy pattern according to an embodiment of the present invention.

  As shown in FIGS. 13a to 13b, in the present invention, the dummy patterns arranged between the sensor patterns are divided into a plurality of sub-dummy patterns having a preset form, and the continuity of the dummy patterns is determined. A part of a pattern may be cut and divided so as to have a shape different from the shape of the entire outline and a different area.

  In FIG. 13 a, the lines are divided in parallel between the lines in the virtual divided pattern 130 and the meshes in the dummy pattern 111.

  In FIG. 13b, the lines in the virtual divided pattern 130 and the mesh in the dummy pattern 111 are divided so as not to be parallel to each other.

  At this time, the present invention divides using a virtual division pattern, and has a preset angle so that the line in the virtual division pattern and the mesh in the dummy pattern are parallel to each other or not parallel to each other. Can be divided as follows. Of the sub-dummy patterns thus divided, at least one sub-dummy pattern is divided so as to have a shape different from the shape of the entire outline and a different area.

  As shown in FIG. 13b described above, the dummy pattern is formed to have a preset angle between the breaking line and the mesh in the dummy pattern, thereby preventing the problem of mutual moire. Can do.

  Further, by dividing the meshes in the dummy pattern so as not to be parallel to each other and forming the sub-dummy pattern, not only can moire be prevented but also the visibility can be further improved.

  Since the dummy pattern is partly cut and divided into a large number of sub dummy patterns, the ends of the divided large number of sub dummy patterns are formed open.

  Here, the present invention describes the principle of dividing a dummy pattern using a virtual divided pattern, and the virtual divided pattern can be applied to all of FIGS. 11a to 12b.

  FIGS. 14a to 14b are fourth diagrams showing a dummy pattern according to an embodiment of the present invention.

  As shown in FIGS. 14a to 14b, in the present invention, each dummy pattern arranged between sensor patterns is divided into a plurality of preset forms, and the dummy pattern is one of the patterns having continuity. It is possible to divide the mesh in the dummy pattern by breaking it regularly or irregularly within a preset range.

  Thus, it is preferable that the length of the sub dummy pattern formed regularly or irregularly is 0.3 mm to 1.5 mm.

  In FIG. 14a, the mesh in the dummy pattern 111 can be regularly broken and divided within a preset range, and the broken lines can be formed to have the same length.

  For example, the length Lx of the line broken in the horizontal direction is equal to the length Ly of the line broken in the vertical direction.

  In FIG. 14b, the mesh in the dummy pattern 111 can be broken and divided irregularly within a preset range, and the broken lines can be formed to have different lengths.

  Of course, the lengths of the broken lines may be different from each other within a preset range.

  For example, the lengths Lx1 and Lx2 or Ly1 and Ly2 of the lines determined to be in the horizontal direction are determined at random and are different from each other.

  Since the dummy pattern is partly cut and divided into a large number of sub dummy patterns, the ends of the divided large number of sub dummy patterns are formed open.

  As shown in FIGS. 11a to 14b, the dummy pattern is divided into a number of sub-dummy patterns, and each divided sub-dummy pattern is preferably formed with five or more unit meshes for the purpose of improving visibility. This is because it is more effective.

  At this time, according to the present invention, a dummy pattern is arranged between the sensor patterns, is located between the sensor pattern and the dummy pattern, and is separated by a preset distance along a boundary surface between the sensor pattern and the dummy pattern. An auxiliary dummy pattern physically separated from the pattern can be additionally formed. Further, the auxiliary dummy pattern can be divided and formed if necessary.

  FIG. 15 is a fifth diagram showing a dummy pattern according to an embodiment of the present invention.

  As shown in FIG. 15, in the present invention, when a dummy connection part is formed between dummy patterns, a dummy pattern 111 is arranged between the sensor patterns 110 and the sensor pattern 110 and the dummy pattern 111 are assisted. A dummy pattern 112 can be additionally formed. If necessary, a large number of auxiliary dummy patterns can be formed between the sensor pattern and the dummy pattern.

  Here, in the embodiment of the present invention, the dummy pattern and the dummy connection portion are described as only the dummy pattern without being divided, but the dummy pattern including the dummy connection portion is meant.

  At this time, the auxiliary dummy pattern 112 is formed along the boundary surface between the sensor pattern 110 and the dummy pattern 111 and can be formed apart from each of the sensor pattern 110 and the dummy pattern 111 by a predetermined distance. . In other words, the auxiliary dummy pattern 112 is separated from the sensor pattern 110 on one side by a preset distance, and can be formed apart from the dummy pattern 111 on the other side by a preset distance.

  Further, the auxiliary dummy pattern 112 may be formed such that the separation distance from the sensor pattern 110 and the separation distance from the dummy pattern 111 are equal to each other or different from each other.

  Since the auxiliary dummy pattern 112 formed in this manner is spaced apart by a preset distance along the outline of the sensor pattern 110, the auxiliary dummy pattern 112 has the same shape as the outline of the sensor pattern 110. Become.

  The auxiliary dummy pattern 112 can be formed in a band shape along the boundary surface between the sensor pattern 110 and the dummy pattern 111. Since the auxiliary dummy pattern 112 is formed along the boundary surface between the sensor pattern 110 and the dummy pattern 111, the same line in the same direction, for example, the same x coordinate in the X axis direction or the same in the Y axis direction. One auxiliary dummy pattern 112 may be formed on the y coordinate.

  Of course, the auxiliary dummy pattern 112 positioned on the same line in the same direction can be formed as a continuous pattern, but is not necessarily limited to this, and can be divided as necessary. That is, a part of the continuous pattern can be cut and divided into a large number of auxiliary dummy patterns 112.

  Further, the dummy pattern 111 can be formed by being divided into a number of preset forms, or can be formed by regularly or irregularly disconnecting the meshes constituting the dummy pattern to be arranged.

  The dummy pattern 111 and the auxiliary dummy pattern 112 are formed with their ends open.

  As described above, the fact that a part of the pattern is cut off at the boundary between the dummy pattern 111 and the auxiliary dummy pattern 112 is to electrically insulate the dummy pattern 111 and the auxiliary dummy pattern 112 from each other. Thus, the fact that the end of each of the dummy pattern 111 and the auxiliary dummy pattern 112 is opened means that the end is not connected to the frame electrode.

  FIG. 16 is a view showing an arrangement of auxiliary dummy patterns according to an embodiment of the present invention.

  As shown in FIG. 16, the auxiliary dummy pattern is formed along the boundary surface between the sensor pattern 110 and the dummy pattern 111, and is formed apart from the sensor pattern 110 on one side by a preset distance d1. Can do. Here, the separation distance d1 from the sensor pattern 110 may be 30 μm or less.

  On the other hand, the auxiliary dummy pattern 112 can be formed apart from the dummy pattern 111 on the other side by a preset distance d2, and the separation distance d2 from the dummy pattern 111 is 20 μm or less. Can do.

  As described above, the auxiliary dummy pattern 112 may be formed such that the separation distance from the sensor pattern 110 and the separation distance from the dummy pattern 111 are equal to each other or different from each other. it can.

  Further, the auxiliary dummy pattern 112 is formed in a band shape between the sensor pattern 110 and the dummy pattern 111, and the thickness w can be a constant size. Here, the thickness w can be 100 μm or less.

  FIG. 17 is a sixth diagram illustrating a dummy pattern according to an embodiment of the present invention.

  As shown in FIG. 17, in the present invention, when the dummy connection part between the dummy patterns is formed, the dummy pattern 111 is arranged between the sensor patterns 110, and the auxiliary is provided between the sensor pattern 110 and the dummy pattern 111. A dummy pattern 112 can be additionally formed.

  In the present invention, the dummy pattern 111a and the dummy connection part 111b can be physically separated and separated from each other by a preset distance.

  At this time, the auxiliary dummy pattern 112 is formed along the boundary surface between the sensor pattern 110 and the dummy pattern 111 and can be formed apart from each of the sensor pattern 110 and the dummy pattern 111 by a predetermined distance. . In other words, the auxiliary dummy pattern 112 is separated from the sensor pattern 110 on one side by a preset distance, and can be formed away from the dummy pattern 111 on the other side by a preset distance.

  Further, the auxiliary dummy pattern 112 may be formed such that the separation distance from the sensor pattern 110 and the separation distance from the dummy pattern 111 are equal to each other or different from each other.

  Since the auxiliary dummy pattern 112 formed in this manner is spaced apart by a preset distance along the outline of the sensor pattern 110, the auxiliary dummy pattern 112 has the same shape as the outline of the sensor pattern 110. Become.

  The auxiliary dummy pattern 112 can be formed in a band shape along the boundary surface between the sensor pattern 110 and the dummy pattern 111. Since the auxiliary dummy pattern 112 is formed along the boundary surface between the sensor pattern 110 and the dummy pattern 111, the same line in the same direction, for example, the same x coordinate in the X axis direction or the same in the Y axis direction. One auxiliary dummy pattern can be formed on the y coordinate.

  Of course, the auxiliary dummy pattern 112 positioned on the same line in the same direction can be formed as a continuous pattern, but is not necessarily limited to this, and can be divided if necessary. That is, a part of the continuous pattern can be cut and divided into a large number of auxiliary dummy patterns 112.

  In addition, the dummy pattern 111 may be formed by being divided into a number of preset forms, or may be formed by regularly or irregularly disconnecting the meshes constituting the arranged dummy patterns.

  Such dummy patterns 111a and auxiliary dummy patterns 112 are formed with their ends open. Of course, the end of the dummy connecting portion 111b separated from the dummy pattern 111a is also opened.

  As described above, the fact that a part of the pattern is cut off at the boundary between the dummy pattern 111 and the auxiliary dummy pattern 112 is to electrically insulate the dummy pattern 111 and the auxiliary dummy pattern 112 from each other. Thus, the fact that the end of each of the dummy pattern 111 and the auxiliary dummy pattern 112 is open means that the end is not connected to the frame electrode.

  18a to 18b are a seventh diagram illustrating a dummy pattern according to an embodiment of the present invention.

  As shown in FIG. 18 a, in the present invention, when the dummy connection part between the dummy patterns is not formed, the dummy pattern 111 is disposed between the sensor patterns 110 and the auxiliary dummy is interposed between the sensor pattern 110 and the dummy pattern 111. Additional patterns 112 can be formed.

  Thus, when the dummy connection part is not formed, the interval between the sensor patterns 110 can be formed narrower than the interval between the sensor patterns described with reference to FIGS. 15 and 17.

  At this time, the auxiliary dummy pattern 112 is formed along the boundary surface between the sensor pattern 110 and the dummy pattern 111 and may be formed apart from each of the sensor pattern 110 and the dummy pattern 111 by a predetermined distance. . In other words, the auxiliary dummy pattern 112 is separated from the sensor pattern 110 on one side by a preset distance, and can be formed apart from the dummy pattern 111 on the other side by a preset distance.

  Further, the auxiliary dummy pattern 112 may be formed such that the separation distance from the sensor pattern 110 and the separation distance from the dummy pattern 111 are equal to each other or different from each other.

  Since the auxiliary dummy pattern 112 formed in this manner is spaced apart by a preset distance along the outline of the sensor pattern 110, the auxiliary dummy pattern 112 has the same shape as the outline of the sensor pattern 110. Become.

  The auxiliary dummy pattern 112 may be formed in a band shape along the boundary surface between the sensor pattern 110 and the dummy pattern 111. Since the auxiliary dummy pattern 112 is formed along the boundary surface between the sensor pattern 110 and the dummy pattern 111, the same line in the same direction, for example, the same x coordinate in the X axis direction or the same y in the Y axis direction. One auxiliary dummy pattern 112 may be formed on the coordinates.

  Of course, the auxiliary dummy pattern 112 positioned on the same line in the same direction can be formed as a continuous pattern, but is not necessarily limited to this, and can be divided if necessary. That is, a part of the continuous pattern can be cut and divided into a large number of auxiliary dummy patterns 112.

  Further, the dummy pattern 111 can be formed by being divided into a number of preset forms, or can be formed by regularly or irregularly disconnecting the meshes constituting the dummy pattern to be arranged.

  The dummy pattern 111 and the auxiliary dummy pattern 112 are formed with their ends open.

  As described above, the fact that a part of the pattern is cut off at the boundary between the dummy pattern 111 and the auxiliary dummy pattern 112 is to electrically insulate the dummy pattern 111 and the auxiliary dummy pattern 112 from each other. Thus, the fact that the end of each of the dummy pattern 111 and the auxiliary dummy pattern 112 is open means that the end is not connected to the frame electrode.

  As shown in FIG. 18b, in the present invention, when the dummy connection part between the dummy patterns is not formed, the dummy pattern 111 is arranged between the sensor patterns 110 and the auxiliary is provided between the sensor pattern 110 and the dummy pattern 111. A dummy pattern 112 can be additionally formed.

  Thus, when the dummy connection part is not formed, the interval between the sensor patterns 110 can be formed narrower than the interval between the sensor patterns described with reference to FIGS. 15 and 17.

  At this time, the auxiliary dummy pattern 112 is formed along the boundary surface between the sensor pattern 110 and the dummy pattern 111 and may be formed apart from each of the sensor pattern 110 and the dummy pattern 111 by a predetermined distance. . In other words, the auxiliary dummy pattern 112 is separated from the sensor pattern 110 on one side by a preset distance, and can be formed apart from the dummy pattern 111 on the other side by a preset distance.

  Further, the auxiliary dummy pattern 112 may be formed such that the separation distance from the sensor pattern 110 and the separation distance from the dummy pattern 111 are equal to each other or different from each other.

  Since the auxiliary dummy pattern 112 formed in this manner is spaced apart by a preset distance along the outline of the dummy pattern 110, the auxiliary dummy pattern 112 has the same shape as the outline of the dummy pattern 110. Become.

  The auxiliary dummy pattern 112 may be formed in a band shape along the outline of the dummy pattern 111. Since the auxiliary dummy pattern 112 is formed along the outline of the dummy pattern 111, one auxiliary dummy pattern 112 can be formed so as to surround the outline of each dummy pattern 111. That is, each auxiliary dummy pattern 112 is physically separated and formed.

  Of course, the auxiliary dummy pattern 112 surrounding the dummy pattern can be formed as a continuous pattern, but is not necessarily limited to this, and can be divided as necessary. That is, a part of the continuous pattern can be cut and divided into a large number of auxiliary dummy patterns 112.

  Further, the dummy pattern 111 can be formed by being divided into a number of preset forms, or can be formed by regularly or irregularly disconnecting the meshes constituting the dummy pattern to be arranged.

  The dummy pattern 111 and the auxiliary dummy pattern 112 are formed with their ends open.

  As described above, the fact that a part of the pattern is cut off at the boundary between the dummy pattern 111 and the auxiliary dummy pattern 112 is to electrically insulate the dummy pattern 111 and the auxiliary dummy pattern 112 from each other. Thus, the fact that the end of each of the dummy pattern 111 and the auxiliary dummy pattern 112 is open means that the end is not connected to the frame electrode.

  As described above, the present invention includes the first sensor unit including the first sensor pattern for detecting the X coordinate and the second sensor unit including the second sensor pattern for detecting the Y coordinate. Although an example in which various types of dummy patterns are applied to the touch screen sensor formed by joining the sensor unit and the second sensor unit to each other is shown, the present invention is not necessarily limited to this and senses the X coordinate. The first sensor pattern for detecting the Y coordinate and the second sensor pattern for detecting the Y coordinate may be applied to a touch screen sensor configured to be arranged on the surface of a single substrate.

  Of course, here, the case where the first sensor pattern and the second sensor pattern are all formed on the surface of a single substrate is described as an example. However, the present invention is not necessarily limited to this. Obviously, the first sensor pattern and the second sensor pattern may be formed in various forms.

  For example, a touch screen sensor configured such that a first sensor pattern formed in a first direction and a second sensor pattern formed in a second direction are arranged on both sides of a surface of a single substrate are also included in the present invention. Various types of dummy patterns according to an embodiment of the invention can be applied.

  FIG. 19 is a diagram illustrating a configuration of a touch screen sensor according to another embodiment of the present invention.

  As shown in FIG. 19, the touch screen sensor according to the present invention may include a single sensor unit 100, where the sensor unit 100 includes a first sensor pattern 110 for detecting an X coordinate and a Y coordinate. The second sensor pattern 210 may be arranged on a single substrate.

  At this time, it can be assumed that the first sensor pattern is a sensing electrode that senses a sensing signal, and the second sensor pattern is a driving electrode that senses a driving signal by being electrically separated from the first sensor pattern.

  Each of the plurality of sensing electrodes is disposed in the form of a sensing bar formed extending along the first direction, and each of the plurality of driving electrodes is disposed on a second direction intersecting the first direction. Can do. Here, the first direction indicates the horizontal direction or the X-axis direction, and the second direction indicates the vertical direction or the Y-axis direction.

  For example, the second sensor pattern 210 for detecting the Y coordinate formed long in the horizontal direction is arranged at regular intervals in the vertical direction, and the X coordinate is detected adjacent to the second sensor pattern 210 side by side. A large number of first sensor patterns 110 can be arranged at regular intervals in the horizontal direction.

  That is, a large number of first sensor patterns 110 are arranged side by side for each second sensor pattern 210.

  A sensing region including one sensing electrode and a plurality of driving electrodes arranged in this manner can be formed. The sensing region according to the present invention is not limited to the inclusion relationship between one sensing electrode and a large number of driving electrodes, and can be realized in various forms.

  The wiring electrode 400 can be connected to each of the first sensor pattern 110 and the second sensor pattern 210 arranged in this manner. Here, the wiring electrode 400 serves to transmit a touch signal sensed from the first sensor pattern 110 and the second sensor pattern 210 to an external driving circuit (not shown).

  Further, a dummy pattern 111 can be formed between the first sensor pattern 110 or the second sensor pattern 210 and the wiring electrode. In addition, when the wiring electrode is connected to each of the first sensor patterns 110, a space is generated between the wiring electrodes, and a dummy pattern can be formed in the space. In addition, the size of the dummy pattern can be different depending on the size of the space. The dummy pattern 111 can be formed as a pattern having the same shape as the first sensor pattern 110 or the second sensor pattern 210 or a pattern having the same shape.

  In this way, a large number of sensing electrodes and a large number of sensing electrodes can be disposed on the same surface of the substrate to form a tomographic structure.

  At this time, when the first sensor pattern and the second sensor pattern are formed on one substrate, it is configured by a metal mesh. This is because ITO cannot be bent and cannot be used for a flexible substrate. Although it is possible and cannot be used in medium and large areas, the metal mesh is not only flexible and can be used in medium and large areas, but also has a faster response speed than ITO.

  In addition, when the first sensor pattern and the second sensor pattern are formed on one substrate, a dummy pattern is formed. This is because a phenomenon in which moire occurs when a metal mesh is used. This is because a dummy pattern is formed in the space to prevent moire.

  In addition, since the phenomenon that a pattern is visually recognized occurs due to the difference in pattern density on the substrate, the phenomenon that the pattern is visually recognized by a uniform pattern is formed by forming a dummy pattern in the space.

  FIG. 20 is an enlarged view of the sensor pattern, dummy pattern, and wiring electrode shown in FIG.

  As shown in FIG. 20, when the region A in FIG. 19 is enlarged and detailed, the sensor patterns 110 and 210, the dummy pattern 111, and the wiring electrode 400 are formed in one sensor portion and are formed in a pattern in a certain direction. be able to. The pattern in a certain direction is preferably a mesh-shaped pattern in which lines formed in a certain direction in a continuous pattern intersect each other.

  The ends of the sensor patterns 110 and 210, the dummy pattern 111, and the wiring electrode 400 can be opened. Part of the pattern is cut off at the boundaries of the sensor patterns 110 and 210, the dummy pattern 111, and the wiring electrode 400 to electrically insulate each other. Being done means that the end is not connected to the frame electrode.

  The sensor patterns 110 and 210, the dummy pattern 111, and the wiring electrode 400 can be formed using a positive or negative shape, and the sensor patterns 110 and 210 and the wiring electrode 400 are electrically active electrodes. The dummy pattern 111 is formed of an electrically inactive electrode.

  FIG. 21 is an enlarged view showing the arrangement position and form of the dummy pattern shown in FIG.

  As shown in FIG. 21, when the region B of FIG. 19 is enlarged and detailed, a dummy pattern 111 is formed between the sensor patterns 110 and 210 and the wiring electrode 400, and the dummy pattern 111 is the sensor pattern 110. , 210 and the wiring electrode 400 can be different in size.

  For example, the dummy pattern 111a2 can be formed wider than the dummy pattern 111a1, and the width of the dummy pattern 111 is increased as the distance between the sensor patterns 110 and 210 and the wiring electrode 400 is increased. At this time, the dummy pattern may be divided and formed with two or more sub-dummy patterns. Each dummy pattern can be divided into a different number of sub-dummy patterns. In particular, the number of sub-dummy patterns can vary depending on the size of the dummy pattern.

  Here, the case where the dummy pattern 111 according to the present invention is formed between the sensor patterns 110 and 210 and the wiring electrode 400 is described as an example, but the present invention is not necessarily limited thereto, and the sensor pattern and the sensor are not necessarily limited thereto. It can be formed at various positions such as between patterns or between wiring electrodes. The dummy pattern 111 formed in this way is divided into a number of sub-dummy patterns having a preset form, and there are various methods.

  As an example, 1) As shown in FIG. 11a to FIG. 11b, a part of the pattern having the continuity of the dummy pattern can be cut and divided so as to have the same shape as the entire outer shape and to have an equal area. .

  At this time, the broken line of the dummy pattern and the mesh in the dummy pattern are formed in parallel as shown in FIG. 11a, or the broken line and the broken line in the dummy pattern are not parallel in FIG. 11b. , Can be formed to have a preset angle.

  As another example, 2) As shown in FIGS. 12a to 12b, a part of the pattern having the continuity of the dummy pattern may be cut and divided so as to have a uniform area but a different formation from the overall outline shape. it can.

  As another example, 3) As shown in FIGS. 13a to 13b, a part of the pattern having the continuity of the dummy pattern is cut and divided so as to have a shape different from the shape of the entire outline and a different area. Can do.

  At this time, as shown in FIG. 13a, the lines in the virtual divided pattern and the mesh in the dummy pattern are divided parallel to each other, or in the virtual divided pattern and in the dummy pattern as shown in FIG. 13b. The mesh can be divided so as not to be parallel to each other.

  As another example, as shown in FIGS. 14a to 14b, a part of the pattern having the continuity of the dummy pattern is cut, and the mesh in the dummy pattern is regularly or irregularly broken within a preset range. Can be divided.

  At this time, as shown in FIG. 14a, the mesh in the dummy pattern is regularly broken within a preset range and the lengths of the broken lines are equal, or as shown in FIG. 14b, The meshes in the dummy pattern can be irregularly broken within a preset range, and the lengths of the broken lines can be formed different from each other.

  As another example, when a dummy connection part is formed between dummy patterns as shown in FIG. 15, a dummy pattern is arranged between sensor patterns, and an auxiliary dummy pattern is added between the sensor pattern and the dummy pattern. Can be formed.

  As another example, when the dummy connection part between the dummy patterns is formed as shown in FIG. 17, an auxiliary dummy pattern is additionally formed between the sensor pattern and the dummy pattern, and the dummy pattern and the dummy connection part are formed. They can be physically separated and separated by a preset distance.

  As another example, when the dummy connection part between the dummy patterns is not formed as shown in FIGS. 18a to 18b, an auxiliary dummy pattern is additionally formed between the sensor pattern and the dummy pattern, as shown in FIG. 18a. In addition, the sensor pattern interval may be narrower than the sensor pattern interval described with reference to FIGS. 15 and 17, or may be formed so as to surround the outline of the dummy pattern as shown in FIG. 18b.

  At this time, each of the dummy pattern and the auxiliary dummy pattern may be divided into a large number.

  Further, the auxiliary dummy pattern can be formed not only between the sensor pattern and the dummy pattern but also between the sensor pattern or between the wiring electrode and the wiring electrode depending on the form and position of the dummy pattern.

  The above-described embodiment is an example, and various modifications and variations can be made by those having ordinary knowledge in the technical field to which the present invention belongs without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but to explain it, and the scope of the technical idea of the present invention is limited by such an embodiment. It is not a thing. The protection scope of the present invention should be construed by the appended claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

Claims (12)

A number of sensor patterns formed on the substrate to sense touch signals;
A plurality of wiring electrodes connected to each of the plurality of sensor patterns to transmit the touch signal; and a plurality of dummy patterns formed in spaces between the plurality of sensor patterns or the plurality of wiring electrodes. the dummy pattern consists of two or more sub-dummy patterns of physically separated,
The plurality of dummy patterns, the internal mesh is broken, Ri least two or more sub-dummy patterns physically separating Tona,
The plurality of dummy patterns, the size of the plurality of sensor pattern or the space formed between the plurality of wiring electrodes are formed such that the magnitude is different from each other and wherein Rukoto, capacitive Touchpad structure that uses a dummy pattern for the touchscreen. The multiple sensor patterns are:
A number of first sensor patterns arranged in a first direction on one surface of the substrate, and a number of second sensor patterns arranged in a second direction intersecting the first direction on the same surface where the first sensor pattern is arranged. Sensor pattern,
The dummy pattern is arranged in a space formed by connecting the wiring electrode to a first sensor pattern disposed between the second sensor patterns. A touchpad structure using a dummy pattern for the described capacitive touchscreen. The multiple sensor patterns are:
A plurality of first sensor patterns arranged in one direction on one surface of the substrate, and a plurality of second sensor patterns arranged in a second direction intersecting the first direction on the other surface of the substrate. A touch pad structure using a dummy pattern for the capacitive touch screen according to claim 1.   2. The dummy for a capacitive touch screen according to claim 1, wherein each of the plurality of dummy patterns includes at least two or more sub-dummy patterns and a different number of sub-dummy patterns. Touchpad structure that uses patterns.   2. The electrostatic capacitance according to claim 1, wherein a boundary line of each of the at least two sub dummy patterns to be separated is formed to be parallel to a direction of a mesh constituting the dummy pattern. Touchpad structure using dummy pattern for touch screen. Separate the at least two sub-dummy patterns of the boundary line is formed so as not to mutually parallel to the direction of the mesh constituting the dummy pattern,
The plurality of dummy patterns includes two or more sub-dummy patterns physically separated by a first imaginary line that breaks the internal mesh regularly or irregularly,
At least one predetermined first angle is formed between the first imaginary line and the second imaginary line, and the first imaginary line separates the internal meshes of the plurality of dummy patterns, and the second imaginary line The capacitive touch screen according to claim 1, wherein the line virtually connects between ends of at least two sub-dummy patterns separated in the first dummy pattern. Touchpad structure that uses a dummy pattern. Each of the plurality of dummy patterns includes two or more sub-dummy patterns having a preset form,
2. The electrostatic of claim 1, wherein each of the two or more sub-dummy patterns has a shape different from a shape of an entire outline of the dummy pattern and has a different area. Touchpad structure using dummy pattern for capacitive touch screen.   2. The plurality of dummy patterns according to claim 1, wherein each of the plurality of dummy patterns includes at least two or more sub-dummy patterns that physically or physically separate meshes inside the dummy patterns. Touchpad structure using dummy pattern for capacitive touch screen. Wherein each plurality of dummy patterns, divided by irregularly broken within a range set mesh in advance, characterized in that the length of the broken lines are formed to be different from each other, according to claim 8 A structure of a touch pad using a dummy pattern for the capacitive touch screen according to claim 1. The apparatus further comprises a plurality of auxiliary dummy patterns formed between the plurality of sensor patterns and the plurality of dummy patterns, or formed between the plurality of wiring electrodes and the plurality of dummy patterns. A structure of a touch pad using a dummy pattern for the capacitive touch screen according to Item 1.   The number of dummy patterns may be different from each other according to a size of a space formed between the plurality of sensor patterns or the plurality of wiring electrodes. A touchpad structure using a dummy pattern for the described capacitive touchscreen.   The touch using a dummy pattern for a capacitive touch screen according to claim 10, wherein each of the plurality of dummy patterns and the plurality of auxiliary dummy patterns is divided into a plurality of patterns. Pad structure.

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