Pressure sensing device
Patent Information
- Application Number
- PCT/KR2026/002947
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2025-03-24
- Filing Date
- 2026-02-23
- Publication Date
- 2026-10-01
Smart Images
Figure KR2026002947_01102026_PF_FP_ABST
Abstract
Description
pressure sensing device
[0001] The present invention relates to a pressure sensing device.
[0002] Various methods can be applied to sense pressure applied to a certain area, but generally, to sense pressure applied to a surface, a first electrode and a second electrode are arranged with an elastic dielectric between them, and a method of sensing pressure is applied through the change in distance between the first electrode and the second electrode that changes due to pressure applied to a certain area.
[0003] In this way, a surface pressure sensing device that senses pressure on a surface according to a change in distance between a first electrode and a second electrode is placed on the surface of an object and can sense pressure acting on a certain area of the object.
[0004] However, when the pressure sensing device is placed on the surface of an object, the entire surface of the object cannot take on a flat shape and curves are formed; and when the pressure sensing device is placed on a curved surface, there may be a problem in that the change in distance between the first electrode and the second electrode is not properly measured due to the bending, or the pressure sensing device cannot bend in correspondence with the curves of the object's surface, resulting in a void and thus failing to sense the pressure acting on the object's surface.
[0005] The present invention is an invention devised to solve the problems of the aforementioned prior art, and aims to secure the flexibility of the electrode.
[0006] The problems that the present invention aims to solve are not limited to those mentioned above, and other problems not mentioned herein will be clearly understood by those skilled in the art from the description below.
[0007] A pressure sensing device according to an embodiment of the present invention for achieving the above-described purpose comprises an elastic dielectric portion, a first electrode disposed on a first surface of the elastic dielectric portion, and a second electrode disposed on a second surface opposite to the first surface, wherein the first electrode comprises a plurality of first pattern portions including a first region extending in a first direction, a second region extending in a second direction perpendicular to the first direction from an end of the first region, a third region extending in a direction opposite to the first region in the first direction from an end of the second region, and a fourth region extending in a direction opposite to the second region from an end of the third region in the second direction, wherein the plurality of first pattern portions are repeated such that the first region extends in the first direction from an end of the fourth region.
[0008] According to the present embodiment, the fourth region is spaced apart from the first region by a first interval in the second direction, and the adjacent third region may be spaced apart from each other by the first interval in the second direction.
[0009] According to the present embodiment, the adjacent fourth regions may be spaced apart from each other by a second interval in the first direction, and the adjacent second regions may be spaced apart from each other by a second interval in the first direction.
[0010] According to the present embodiment, a plurality of first pattern portions may include a first part including a first region that does not extend from the end of the fourth region, and a plurality of second parts including a first region that extends in the first direction from the end of the fourth region.
[0011] According to the present embodiment, the first electrode portion further includes a fifth region, and the fifth region may be positioned at the center of the first surface by extending from the end of the fourth region of any one of the plurality of first pattern portions.
[0012] According to the present embodiment, the length of the first region in the second direction, which is positioned furthest from the center of the first surface in the second direction, may be smaller than the length of the fifth region in the second direction.
[0013] According to the present embodiment, the second electrode comprises a plurality of second pattern portions including a sixth region extending in a first direction, a seventh region extending in a second direction perpendicular to the first direction from the end of the sixth region, an eighth region extending in a direction opposite to the sixth region in the first direction from the end of the seventh region, and a ninth region extending in a direction opposite to the seventh region in the second direction from the end of the eighth region, wherein the plurality of second pattern portions may be repeated such that the sixth region extends in the first direction from the end of the ninth region.
[0014] According to the present embodiment, the ninth region is spaced apart from the sixth region by a first interval in the second direction, and the adjacent eighth regions may be spaced apart from each other by the first interval in the second direction.
[0015] According to the present embodiment, the adjacent ninth regions may be spaced apart from each other by a second interval in the first direction, and the adjacent seventh regions may be spaced apart from each other by a second interval in the first direction.
[0016] According to the present embodiment, a plurality of the second pattern portions may include a third part including the sixth region that does not extend from the end of the ninth region, and a fourth part including the sixth region that extends in the first direction from the end of the ninth region.
[0017] According to the present embodiment, the second electrode portion further includes a 10th region, and the 10th region may be positioned at the center of the second surface by extending from the end of the 9th region of any one of the plurality of second pattern portions.
[0018] According to the present embodiment, the length of the sixth region in the second direction, which is positioned furthest from the center of the second surface in the second direction, may be smaller than the length of the tenth region in the second direction.
[0019] According to the present embodiment, a plurality of the second pattern portions may be arranged to overlap a plurality of the first pattern portions in a direction perpendicular to the first direction and the second direction, and in a direction toward the first surface from the second surface.
[0020] A pressure sensing device according to an embodiment of the present invention for solving the above problem may have the effect of securing flexibility of the electrode.
[0021] The effects of the present invention are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art from the description in the claims.
[0022] In addition, the effects of the present invention may be described in more detail in the detailed description of the present invention and are not necessarily limited to those presented above.
[0023] The summary described above, as well as the detailed description of the preferred embodiments of the present application described below, will be better understood when read in conjunction with the accompanying drawings.
[0024] Preferred embodiments are illustrated in the drawings for the purpose of illustrating the present invention.
[0025] However, it should be understood that the present application is not limited to the exact arrangement and means depicted.
[0026] FIG. 1 is a drawing illustrated for the overall explanation of a pressure sensing device according to an embodiment of the present invention;
[0027] FIG. 2 is a drawing illustrating a first electrode portion of a pressure sensing device according to an embodiment of the present invention;
[0028] FIG. 3 is a drawing illustrating the first, second, third, fourth, and fifth regions of a pressure sensing device according to an embodiment of the present invention;
[0029] FIG. 4 is a drawing illustrating the lengths of the first, second, third, fourth, and fifth regions and the first and second intervals of the pressure sensing device according to an embodiment of the present invention;
[0030] FIG. 5 is a drawing illustrating the first and second parts of a pressure sensing device according to an embodiment of the present invention;
[0031] FIG. 6 is a drawing illustrating a second electrode portion of a pressure sensing device according to an embodiment of the present invention;
[0032] FIG. 7 is a drawing illustrating the 6th, 7th, 8th, 9th, and 10th regions of a pressure sensing device according to an embodiment of the present invention;
[0033] FIG. 8 is a drawing illustrating the lengths of the 6th, 7th, 8th, 9th, and 10th regions and the first and second intervals of a pressure sensing device according to an embodiment of the present invention;
[0034] FIG. 9 is a drawing illustrating the third and fourth parts of a pressure sensing device according to an embodiment of the present invention;
[0035] FIG. 10 is a drawing illustrating a cross-section of A'A" of a pressure sensing device according to an embodiment of the present invention; and
[0036] FIG. 11 is a drawing illustrating a cross-section of B'B" of a pressure sensing device according to an embodiment of the present invention.
[0037] The present invention is capable of various modifications and may have various embodiments, and specific embodiments are illustrated and described in the drawings. However, this is not intended to limit the invention to specific embodiments, and it should be understood that the invention includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the invention.
[0038] Terms including ordinal numbers, such as second, first, etc., may be used to describe various components, but the components are not limited by the terms. The terms are used solely for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the second component may be named the first component, and similarly, the first component may be named the second component. The term "and / or" includes a combination of a plurality of related described items or any of a plurality of related described items.
[0039] When it is stated that one component is "connected" or "connected" to another component, it should be understood that while it may be directly connected or connected to that other component, there may also be other components in between. On the other hand, when it is stated that one component is "directly connected" or "directly connected" to another component, it should be understood that there are no other components in between.
[0040] The terms used in this application are used merely to describe specific embodiments and are not intended to limit the invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this application, terms such as "comprising" or "having" are intended to specify the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.
[0041] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which the present invention pertains. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an ideal or overly formal sense unless explicitly defined in this application.
[0042] Hereinafter, embodiments will be described in detail with reference to the attached drawings, provided that identical or corresponding components are given the same reference number regardless of the drawing symbols, and redundant descriptions thereof will be omitted.
[0043] Furthermore, when described as being formed or placed on the “top or bottom” of each component, “top or bottom” includes not only cases where two components are in direct contact with each other, but also cases where one or more other components are formed or placed between the two components. Additionally, when expressed as “top or bottom,” it may include the meaning of a downward direction as well as an upward direction relative to a single component.
[0044] Furthermore, when describing objects as "identical" or "similar" based on numerically or geometrically comparable properties such as length, inner diameter, diameter, or area, this may imply that there is a margin of error. For example, if it is stated that the lengths of components A and B are identical, it may be advisable to interpret this to mean that the length of B falls within the margin of error of the length of A. This takes into account the margin of error that occurs during the injection molding and manufacturing processes; since this is a matter that can occur physically and is self-evident, it is advisable to understand the description as "identical" or "similar" by considering the margin of error as described above. In this case, the margin of error may be within the range of -5% to +5% of the mentioned numerical value or shape, but this is merely an example of the margin of error and may not necessarily be limited to the stated range.
[0045] A preferred embodiment of the present invention, in which the objective of the present invention can be specifically realized, will be described below with reference to the attached FIGS. 1 to 11.
[0046] First, a pressure sensing device according to an embodiment of the present invention includes an elastic dielectric part (100), a first electrode (200) disposed on a first surface (101) of the elastic dielectric part (100), and a second electrode (300) disposed on a second surface (102) opposite to the first surface (101).
[0047] At this time, prior to describing the pressure sensing device according to the embodiment of the present invention, the first direction, the second direction, and the third direction are defined as follows: the first direction is the direction in which the first region (210), to be described later, is extended; the second direction is the direction in which the second region (220) is extended; and the third direction may be the direction from the first surface (101) toward the second surface (102). Furthermore, the first direction may mean a bidirectional direction including the direction in which the first region (210) is extended and the direction in which the third region (230) is extended, and the second direction may mean a bidirectional direction including the direction in which the second region (220) is extended and the direction in which the fourth region (240) is extended.
[0048] Based on FIG. 1, the first direction is a bidirectional direction including the direction from the upper left to the lower right and the direction from the lower right to the upper left, the second direction is a bidirectional direction including the direction from the lower left to the upper right and the direction from the upper right to the lower left, and the third direction is perpendicular to the first and second directions and may mean a bidirectional direction including the direction from the upper side to the lower side and the direction from the lower side to the upper side. At this time, the first, second, and third directions can be understood in more detail through the directions indicated in each drawing.
[0049] Based on this, to describe the pressure sensing device according to an embodiment of the present invention, the first electrode (200) is placed on the first surface (101) of the elastic dielectric part (100), and the second electrode (300) is placed on the second surface (102) of the elastic dielectric part (100), and the first surface (101) and the second surface (102) may be placed facing each other in a first direction.
[0050] At this time, to explain the first electrode (200), refer to FIGS. 2 to FIGS. 5. As shown in FIG. 2, the first electrode (200) includes a first pattern portion (P1), and the first pattern portion (P1) includes a first region (210) extending in a first direction, a second region (220) extending in a second direction perpendicular to the first direction from the end of the first region (210), a third region (230) extending in a direction opposite to the first region (210) in the first direction from the end of the second region (220), and a fourth region (240) extending in a direction opposite to the second region (220) in the second direction from the end of the third region (230). At this time, a plurality of first pattern portions (P1) are arranged on the first surface (101), and the first region (210) is repeatedly arranged extending in the first direction from the end of the fourth region (240).
[0051] Additionally, it may further include a fifth region (250) that extends from a fourth region (240) of any one of the plurality of first pattern sections (P1) and is positioned at the center of the first surface (101).
[0052] In addition, a plurality of first pattern parts (P1) may include a first part (211, 221, 231, 241) including a first region (210) that does not extend from the end of the fourth region (240), and a plurality of second parts (212, 222, 232, 242) including a first region (210) that extends in a first direction from the end of the fourth region (240). This will be explained in more detail with reference to the drawings to be described later.
[0053] Here, the first region (210) positioned adjacent to the periphery of the first surface (101) in the second direction may include a separate wire connected to an external sensor unit, or the end of the first region (210) may be positioned to be in contact with the sensor unit described above. However, since the placement of the sensor unit is not limited in the process of describing the pressure sensing device according to the embodiment of the present invention, it is not specifically illustrated and is described only as being electrically connected to the end of the first region (210). It may be preferable to understand that the end of the first region (210) and the sensor unit are electrically connected as described above, even though they are not illustrated. However, this is explained based on the first electrode (200), and will be explained in more detail through the second electrode (300) described later.
[0054] Additionally, although not illustrated, it may further include a first shield layer in contact with the first electrode (200) in the opposite direction to the first surface (101) in the third direction based on FIG. 1, a second shield layer in contact with the second electrode (300) in the opposite direction to the second surface (102) in the third direction, and a cover in contact with the first shield layer in the opposite direction to the first shield layer in the third direction.
[0055] Here, the first shield layer fixes the first electrode (200) to the first surface (101) while preventing damage to the first electrode (200), and the second shield layer fixes the second electrode (300) to the second surface (102) while preventing damage to the second electrode (300), and the cover may be a part that comes into contact with the outside. At this time, although the cover has been described as coming into contact only with the first shield layer, another cover that comes into contact with the second shield layer may be placed when sensing pressure acting from both sides. However, in order to sense pressure measured on the surface of an object, it may be preferable for the second shield layer to come into contact with the object and for the cover to be placed in a direction facing the outside of the object.
[0056] Accordingly, the pressure applied to the cover is transmitted to the first electrode (200), and the elastic dielectric part (100) is pressurized by the pressure applied to the first electrode (200), so that the distance between the first electrode (200) and the second electrode (300) can be varied. In addition, the sensor part can sense the variation in the distance between the first electrode (200) and the second electrode (300) described above to sense the presence or absence of pressure applied to the first electrode (200), the location of the pressure, and the magnitude of the pressure, and may sense at least one of the presence or absence of pressure, the location of the pressure, and the magnitude of the pressure described above.
[0057] The first shield layer, the second shield layer, and the cover described above are not illustrated in the drawings, but are described illustratively to aid in understanding the pressure sensing device according to an embodiment of the present invention and should not be interpreted as being limited only to what is mentioned.
[0058] At this time, since it is difficult to distinguish and understand the first area (210), second area (220), third area (230), fourth area (240), and fifth area (250) through FIG. 2, FIG. 3 distinguishes and displays the first area (210), second area (220), third area (230), fourth area (240), and fifth area (250). This is merely to aid in understanding the pressure sensing device according to the embodiment of the present invention, and the area refers to a part within a certain range and should not be interpreted as being limited by the distinction markings disclosed in the drawing. However, since there is no specific description of the first region (210), second region (220), third region (230), fourth region (240), and fifth region (250), the aforementioned first region (210) to fifth region (250) may be arbitrarily understood and misinterpreted, the aforementioned first region (210) to fifth region (250) will be described based on the drawings for the purpose of explaining the pressure sensing device according to the embodiment of the present invention.
[0059] First, referring to FIG. 2, the first region (210) of the first electrode (200) extends in a first direction parallel to one of the periphery portions of the first surface (101), and the second region (220) may extend from the end of the first region (210) in a second direction perpendicular to the first direction and parallel to another periphery portion of the first surface (101) that does not face one of the periphery portions. Additionally, the third region (230) extends in a direction opposite to the first region (210) in a first direction parallel to any one of the peripheries of the first surface (101) from the end of the second region (220), and the fourth region (240) extends in a direction opposite to the second region (220) in a second direction parallel to another one that does not face any of the peripheries of the first surface (101) from the end of the third region (230), and the end may be spaced apart from the first region (210) in a second direction.
[0060] At this time, the first area (210) may include a first-1 area (211) positioned closest to the perimeter of the first surface (101) in the second direction and a plurality of first-2 areas (212) positioned between the first-1 area (211) and the fifth area (250) in the second direction, and the second area (220) may include a second-1 area (221) positioned closest to the perimeter of the first surface (101) in the first direction and a plurality of second-2 areas (222) positioned between the second-1 area (221) and the fifth area (250) in the first direction. The third area (230) may include a third-1 area (231) positioned closest to the periphery of the first surface (101) in the second direction and a plurality of third-2 areas (232) positioned between the third-1 area (231) and the fifth area (250) in the second direction, and the fourth area (240) may include a fourth-1 area (241) positioned closest to the periphery of the first surface (101) in the first direction and a plurality of fourth-2 areas (242) positioned between the fourth-1 area (241) and the fifth area (250) in the first direction.
[0061] Here, the first-1 region (211) is included in a first part (211, 221, 231, 241) that does not extend from the end of the aforementioned fourth-1 region (241) or fourth-2 region (242), and a plurality of first-2 regions (212) may be included in a plurality of second parts (212, 222, 232, 242) that extend from the end of the aforementioned fourth-1 region (241) or fourth-2 region (242). That is, the first part (211, 221, 231, 241) includes a first-1 area (211), a second-1 area (221), a third-1 area (231), and a fourth-1 area (241), and each of the plurality of second parts (212, 222, 232, 242) may include a first-2 area (212), a second-2 area (222), a third-2 area (232), and a fourth-2 area (242).
[0062] At this time, the fifth region (250) may be extended from the fourth-2 region (242) of any one of the plurality of second parts (212, 222, 232, 242) and positioned at the center of the first surface (101). That is, the end of the first-1 region (211) where the second-1 region (221) is not extended is one end of the first electrode (200), and the fifth region (250) may be the other end of the first electrode (200).
[0063] Referring to FIG. 4 for a detailed explanation of the first region (210), second region (220), third region (230), fourth region (240) and fifth region (250) described above, as shown in FIG. 4, a plurality of first regions (210) may be spaced apart from each other by a first interval (D1) in the second direction, a plurality of second regions (220) may be spaced apart from each other by a second interval (D2) in the first direction, a plurality of third regions (230) may be spaced apart from each other by a first interval (D1) in the second direction, and a plurality of fourth regions (240) may be spaced apart from each other by a second interval (D2) in the first direction. At this time, the first interval (D1) and the second interval (D2) may be the same. That is, any one of a plurality of second parts (212, 222, 232, 242) including a first part (211, 221, 231, 241) including a first-1 area (211), a second-1 area (221), a third-1 area (231), and a fourth-1 area (241), and adjacent to a first-2 area (212), a second-2 area (222), a third-2 area (232), and a fourth-2 area (242), is spaced apart by a first gap (D1) or a second gap (D2) in the direction from the periphery of the first surface (101) toward the center, and the plurality of second parts (212, 222, 232, 242) may be spaced apart from each other by a first gap (D1) or a second gap (D2) in the direction from the periphery of the first surface (101) toward the center. Here, the gap between the inner corner section of the first part (211, 221, 231, 241) and the outer corner section of the second part (212, 222, 232, 242) is physically larger than the first gap (D1) or the second gap (D2), and the gap between the inner corner section of any one of the multiple second parts (212, 222, 232, 242) and the outer corner section of another second part (212, 222, 232, 242) adjacent to any one of the multiple second parts (212, 222, 232, 242) may also be physically larger than the first gap (D1) or the second gap (D2).
[0064] At this time, the thickness of the first-1 region (211), second-1 region (221), third-1 region (231) and fourth-1 region (241), which are positioned furthest from the fifth region (250) relatively, may differ from the thickness of the first-2 region (212), second-2 region (222), third-2 region (232) and fourth-2 region (242).
[0065] That is, the length (L1) in the second direction of the first-1 region (211) is different from the length (L2) in the second direction of the first-2 region (212), and specifically, the length (L1) in the second direction of the first-1 region (211) may be smaller than the length (L2) in the second direction of the first-2 region (212).
[0066] Additionally, the length (L3) in the first direction of the second-1 region (221) is different from the length (L4) in the first direction of the second-2 region (222), and specifically, the length (L3) in the first direction of the second-1 region (221) may be smaller than the length (L4) in the first direction of the second-2 region (222).
[0067] In addition, the length (L5) in the second direction of the third-1 region (231) is different from the length (L6) in the second direction of the third-2 region (232), and specifically, the length (L5) in the second direction of the third-1 region (231) may be smaller than the length (L6) in the second direction of the third-2 region (232).
[0068] Additionally, the length (L7) in the first direction of the 4-1 region (241) is different from the length (L8) in the first direction of the 4-2 region (242), and specifically, the length (L7) in the first direction of the 4-1 region (241) may be smaller than the length (L8) in the first direction of the 4-2 region (242).
[0069] This is because there is a higher probability that pressure will be sensed at the center of the first surface (101) rather than in an area located relatively outside the first surface (101), and accordingly, it may be preferable that the length (L9) in the second direction of the fifth area (250) is greater than the length (L1) in the second direction of the first-1 area (211).
[0070] At this time, the length in the second direction (L1) of the first-1 region (211), the length in the first direction (L3) of the second-1 region (221), the length in the second direction (L5) of the third-1 region (231), and the length in the first direction (L7) of the fourth-1 region (241) are the same as each other, and the length in the second direction (L2) of the first-2 region (212), the length in the first direction (L4) of the second-2 region (222), the length in the second direction (L6) of the third-2 region (232), and the length in the first direction (L8) of the fourth-2 region (242) may be the same as each other. Additionally, the length (L9) in the second direction of the fifth region (250) may be greater than or equal to the length (L2) in the second direction of the first-second region (212), the length (L4) in the first direction of the second-second region (222), the length (L6) in the second direction of the third-second region (232), and the length (L8) in the first direction of the fourth-second region (242).
[0071] Thus, the length in the second direction (L1) of the first-1 region (211) arranged at the outermost side, the length in the first direction (L3) of the second-1 region (221), the length in the second direction (L5) of the third-1 region (231), and the length in the first direction (L7) of the fourth-1 region (241) are the smallest, and the length in the second direction (L2) of the first-2 region (212), the length in the first direction (L4) of the second-2 region (222), the length in the second direction (L6) of the third-2 region (232), and the length in the first direction (L8) of the fourth-2 region (242) are equal to or smaller than the length in the second direction (L9) of the fifth region (250), and the length in the second direction (L1) of the first-1 region (211), the length in the first direction (L3) of the second-1 region (221), and the third-1 Since the length (L5) in the second direction of the region (231) and the length (L7) in the first direction of the 4-1 region (241) are greater, pressure on the first surface (101) can be sensed more easily, and even if attached to the surface of an object having a curved surface, it can be easily attached to the curved surface by arranging the first part (211, 221, 231, 241) and the plurality of second parts (212, 222, 232, 242) having a first gap (D1) and a second gap (D2).
[0072] At this time, although not specifically compared, the length in the first direction of the first-1 region (211) positioned furthest outward from the center of the first surface (101) toward the periphery may be greater than the length in the first direction of the plurality of first-2 regions (212), and the length in the first direction of the plurality of first-2 regions (212) may be greater than the length in the first direction of the fifth region (250). Additionally, among the plurality of first-2 regions (212), the length in the first direction of any one first-2 region (212) positioned relatively outward from the center of the first surface (101) toward the periphery may be greater than the length in the first direction of another first-2 region (212) positioned relatively inwardly adjacent to it. That is, the length in the first direction of the first region (210) may gradually decrease in the direction from the periphery of the first surface (101) toward the center.
[0073] In addition, the length in the second direction of the second-1 region (221), which is positioned furthest outward from the center of the first surface (101) toward the periphery, is greater than the length in the second direction of a plurality of second-2 regions (222), and the length in the second direction of a plurality of second-2 regions (222) may be greater than the length in the second direction (L9) of the fifth region (250). Furthermore, among the plurality of second-2 regions (222), the length in the second direction of any one second-2 region (222) positioned relatively outward from the center of the first surface (101) toward the periphery may be greater than the length in the second direction of another second-2 region (222) positioned relatively inwardly adjacent to it. That is, the length in the second direction of the second region (220) may gradually decrease in the direction from the periphery of the first surface (101) toward the center.
[0074] The length in the first direction of the third-1 region (231), which is positioned furthest outward from the center of the first surface (101) toward the periphery, is greater than the length in the first direction of a plurality of third-2 regions (232), and the length in the first direction of a plurality of third-2 regions (232) may be greater than the length in the first direction of the fifth region (250). Additionally, among the plurality of third-2 regions (232), the length in the first direction of any one third-2 region (232) positioned relatively outward from the center of the first surface (101) toward the periphery may be greater than the length in the first direction of another third-2 region (232) positioned relatively inwardly adjacent to it. That is, the length in the first direction of the third region (230) may gradually decrease in the direction from the periphery of the first surface (101) toward the center.
[0075] In addition, the length in the second direction of the 4-1 region (241), which is positioned furthest outward from the center of the 1st surface (101) toward the periphery, is greater than the length in the second direction of a plurality of 4-2 regions (242), and the length in the second direction of a plurality of 4-2 regions (242) may be greater than the length in the second direction (L9) of the 5th region (250). Furthermore, among the plurality of 4-2 regions (242), the length in the second direction of any one 4-2 region (242) positioned relatively outward from the center of the 1st surface (101) toward the periphery may be greater than the length in the second direction of another 4-2 region (242) positioned relatively inwardly adjacent to it. That is, the length in the second direction of the 4th region (240) may gradually decrease in the direction from the periphery of the 1st surface (101) toward the center.
[0076] Meanwhile, to more easily explain the shape of the pressure sensing device according to an embodiment of the present invention, refer to FIG. 5. As shown in FIG. 5, the first-1 region (211) includes a first end (211a) and a second end (211b), and the second-1 region (221) may extend from the second end (211b) in a second direction. Additionally, the fourth region (240) includes a third end (241a) and a fourth end (241b), the third end (241a) is an end region connected to the third region (230), and the fourth end (241b) may be an end region facing the first end (211a) of the first-1 region (211) in a second direction.
[0077] At this time, the first end (211a) of the first region (210) and the fourth end (241b) of the fourth region (240) are spaced apart by a first interval (D1) in the second direction, and the first-2 region (212) may be extended in the first direction from the fourth end (241b). However, the first-2 region (212) is extended in the first direction, and the end region where the second-2 region (222) is extended in the second direction may be spaced apart from the second-1 region (221) by a second interval (D2) in the first direction. The second-2 region (222) is extended in the second direction, and the end region where the third-2 region (232) is extended in the opposite direction to the first-2 region (212) in the first direction may be spaced apart from the third-1 region (231) by a first interval (D1) in the second direction. The third-2 region (232) extends in the opposite direction to the first-2 region (212) in the first direction, and the end region where the fourth-2 region (242) extends in the opposite direction to the second-2 region (222) in the second direction may be spaced apart from the first-2 region (212) in the first direction by a second gap (D2). The fourth-2 region (242) extends in the opposite direction to the second-2 region (222) in the second direction, and the end region where the fourth-2 region (242) faces the first-2 region (212) in the second direction may be spaced apart from the first-2 region (212) by a first gap (D1).
[0078] The above-described pattern is repeated periodically and extends to the center of the first surface (101), and the fifth area (250) can be connected to the fourth-second area (242) closest to the center of the first surface (101).
[0079] To explain based on this, if one of the multiple second parts (212, 222, 232, 242) positioned relatively outwardly in the direction from the center of the first surface (101) toward the periphery is defined as the second-1 part, and the other one adjacent to the second-1 part and positioned relatively inwardly is defined as the second-2 part, then the length in the first direction of the first region (210) of the second-1 part may be greater than the length in the first direction of the first region (210) of the second-2 part. At this time, the first region (210) of the second-2 part is spaced apart from the second region (220) of the second-1 part by a second interval (D2) in the first direction, and the fourth region (240) of the second-2 part is spaced apart from the fourth region (240) of the second-1 part by a second interval (D2) in the first direction, so the length of the first region (210) of the second-2 part in the first direction may be equal to the length of the first region (210) of the second-1 part in the first direction, the length of the fourth region (240) of the second-1 part in the first direction, the length of the second region (220) of the second-1 part in the first direction, and twice the second interval (D2).
[0080] Additionally, since the second region (220) of the second-2 part is spaced apart from the third region (230) of the second-1 part by a first interval (D1) in the second direction, and the first region (210) of the second-2 part is spaced apart from the first region (210) of the second-1 part by a first interval (D1) in the second direction, the length of the second region (220) of the second-2 part in the second direction may be equal to the length of the second region (220) of the second-1 part in the second direction, the length of the third region (230) of the second-1 part in the second direction, the length of the first region (210) of the second-2 part in the second direction, and twice the difference of the first interval (D1).
[0081] Additionally, the third region (230) of the second-2 part is spaced apart from the fourth region (240) of the second-1 part by a second interval (D2) in the first direction, and the second region (220) of the second-2 part is spaced apart from the second region (220) of the second-1 part by a second interval (D2) in the first direction, so the length of the third region (230) of the second-2 part in the first direction may be equal to the length of the fourth region (240) of the second-1 part in the first direction, the length of the second region (220) of the second-2 part in the second direction, and twice the second interval (D2).
[0082] Additionally, since the fourth region (240) of the second-2 part is spaced apart from the first region (210) of the second-1 part by a first interval (D1) in the second direction, and the third region (230) of the second-2 part is spaced apart from the third region (230) of the second-1 part by a first interval (D1) in the second direction, the length of the fourth region (240) of the second-2 part in the second direction may be equal to the length of the fourth region (240) of the second-1 part in the second direction, the length of the first region (210) of the second-2 part in the second direction, the length of the third region (230) of the second-2 part in the second direction, and twice the first interval (D1).
[0083] However, since the fourth end (241b) of the fourth-1 area (241) is positioned facing the first end (211a) of the first-1 area (211), the length in the first direction of the first-2 area (212), which is positioned closest to the first-1 area (211) in the second direction, may be equal to the difference between the length in the first direction of the first-1 area (211), the length in the second direction of the second-1 area (221), the length in the second direction of the fourth-1 area (241), and the second gap (D2).
[0084] Meanwhile, to explain the second electrode (300), refer to FIGS. 6 to 9. As shown in FIG. 6, the second electrode (300) includes a second pattern section (P2), and the second pattern section (P2) includes a sixth region (310) extending in a first direction, a seventh region (320) extending in a second direction perpendicular to the first direction from the end of the sixth region (310), an eighth region (330) extending in a direction opposite to the sixth region (310) in the first direction from the end of the seventh region (320), and a ninth region (340) extending in a direction opposite to the seventh region (320) in the second direction from the end of the eighth region (330). At this time, a plurality of second pattern sections (P2) are arranged on the second surface (102), and the sixth region (310) is repeatedly arranged extending in the first direction from the end of the ninth region (340).
[0085] Additionally, it may further include a 10th region (350) that extends from the 9th region (340) of any one of the plurality of 2nd pattern sections (P2) and is positioned at the center of the 2nd surface (102).
[0086] In addition, a plurality of second pattern parts (P2) may include a third part (311, 321, 331, 341) including a sixth region (310) that does not extend from the end of the ninth region (340), and a plurality of fourth parts (312, 322, 332, 342) including a sixth region (310) that extends in a first direction from the end of the ninth region (340). This will be explained in more detail with reference to the drawings to be described later.
[0087] Here, the sixth region (310), which is positioned adjacent to the periphery of the second surface (102) in the second direction, may include a separate wire connected to an external sensor unit, or the end of the sixth region (310) may be positioned to be in contact with the sensor unit described above. However, when described together with the first region (210) positioned on the first surface (101) above, the sensor unit described above may be connected to only one end of either the first region (210) or the sixth region (310). However, since the second surface (102) is described as being attached to the surface of an object, it is preferable for the sensor unit to be connected to the sixth region (310), thereby allowing the second electrode (300) to detect a change in length in the third direction between the first electrode (200) and the second electrode (300) and sense pressure. That is, the sensor unit may be electrically connected to only one of the first electrode (200) or the second electrode (300) positioned adjacent to the surface of an object.
[0088] Meanwhile, since it is difficult to distinguish and understand the 6th area (310), 7th area (320), 8th area (330), 9th area (340), and 10th area (350) through FIG. 6, FIG. 7 distinguishes and displays the 6th area (310), 7th area (320), 8th area (330), 9th area (340), and 10th area (350). This is merely to aid in understanding the pressure sensing device according to the embodiment of the present invention, and the area refers to a part within a certain range and should not be interpreted as being limited by the distinction markings disclosed in the drawing. However, since there is no specific description of the 6th region (310), 7th region (320), 8th region (330), 9th region (340), and 10th region (350), the above-described 6th region (310) to 10th region (350) may be arbitrarily understood and misinterpreted, the above-described 6th region (310) to 10th region (350) will be described based on the drawings for the purpose of explaining the pressure sensing device according to the embodiment of the present invention.
[0089] First, referring to FIG. 6, the sixth region (310) of the second electrode (300) extends in a first direction parallel to one of the periphery portions of the second surface (102), and the seventh region (320) may extend from the end of the sixth region (310) in a second direction perpendicular to the first direction and parallel to another periphery portion of the second surface (102) that does not face one of the periphery portions. Additionally, the 8th region (330) extends in a direction opposite to the 6th region (310) in a first direction parallel to any one of the peripheries of the 2nd surface (102) from the end of the 7th region (320), and the 9th region (340) extends in a direction opposite to the 7th region (320) in a second direction parallel to another one that does not face any of the peripheries of the 2nd surface (102) from the end of the 8th region (330), and the end may be spaced apart from the 6th region (310) in a second direction.
[0090] At this time, the 6th area (310) may include a 6-1 area (311) positioned closest to the periphery of the 2nd surface (102) in the 2nd direction and a plurality of 6-2 areas (312) positioned between the 6-1 area (311) and the 10th area (350) in the 2nd direction, and the 7th area (320) may include a 7-1 area (321) positioned closest to the periphery of the 2nd surface (102) in the 1st direction and a plurality of 7-2 areas (322) positioned between the 7-1 area (321) and the 10th area (350) in the 1st direction. The 8th region (330) may include an 8-1 region (331) positioned closest to the perimeter of the 2nd surface (102) in the 2nd direction and a plurality of 8-2 regions (332) positioned between the 8-1 region (331) and the 10th region (350) in the 2nd direction, and the 9th region (340) may include a 9-1 region (341) positioned closest to the perimeter of the 2nd surface (102) in the 1st direction and a plurality of 9-2 regions (342) positioned between the 9-1 region (341) and the 10th region (350) in the 1st direction.
[0091] Here, the 6-1 region (311) is included in a third part (311, 321, 331, 341) that does not extend from the end of the 9-1 region (341) or 9-2 region (342) described above, and a plurality of 6-2 regions (312) may be included in a plurality of fourth parts (312, 322, 332, 342) that extend from the end of the 9-1 region (341) or 9-2 region (342) described above. That is, the third part (311, 321, 331, 341) includes the 6-1 area (311), the 7-1 area (321), the 8-1 area (331), and the 9-1 area (341), and each of the plurality of fourth parts (312, 322, 332, 342) may include the 6-2 area (312), the 7-2 area (322), the 8-2 area (332), and the 9-2 area (342).
[0092] At this time, the 10th region (350) may be extended from the 9th-2 region (342) of any one of the plurality of 4th parts (312, 322, 332, 342) and positioned at the center of the 2nd surface (102). That is, the end of the 6th-1 region (311) where the 7th-1 region (321) is not extended is one end of the 2nd electrode (300), and the 10th region (350) may be the other end of the 2nd electrode (300).
[0093] Referring to FIG. 8 for a detailed explanation of the aforementioned 6th region (310), 7th region (320), 8th region (330), 9th region (340) and 10th region (350), as illustrated in FIG. 8, a plurality of 6th regions (310) may be spaced apart from each other by a first interval (D1) in the second direction, a plurality of 7th regions (320) may be spaced apart from each other by a second interval (D2) in the first direction, a plurality of 8th regions (330) may be spaced apart from each other by a first interval (D1) in the second direction, and a plurality of 9th regions (340) may be spaced apart from each other by a second interval (D2) in the first direction. At this time, the first interval (D1) and the second interval (D2) may be the same. That is, any one of the plurality of fourth parts (312, 322, 332, 342) including the 6-2 area (312), 7-2 area (322), 8-2 area (332), and 9-2 area (342) adjacent to the third part (311, 321, 331, 341) including the 6-1 area (311), 7-1 area (321), 8-1 area (331), and 9-1 area (341) is spaced apart by a first gap (D1) or a second gap (D2) in the direction from the periphery of the second surface (102) toward the center, and the plurality of fourth parts (312, 322, 332, 342) may be spaced apart from each other by a first gap (D1) or a second gap (D2) in the direction from the periphery of the fourth surface toward the center. Here, the gap between the inner corner section of the third part (311, 321, 331, 341) and the outer corner section of the fourth part (312, 322, 332, 342) is physically larger than the first gap (D1) or the second gap (D2), and the gap between the inner corner section of any one of the plurality of fourth parts (312, 322, 332, 342) and the outer corner section of another fourth part (312, 322, 332, 342) adjacent to any one of the plurality of fourth parts (312, 322, 332, 342) may also be physically larger than the first gap (D1) or the second gap (D2).
[0094] At this time, the thickness of the 6-1 region (311), 7-1 region (321), 8-1 region (331) and 9-1 region (341), which are positioned furthest from the 10th region (350) relatively, may differ from the thickness of the 6-2 region (312), 7-2 region (322), 8-2 region (332) and 9-2 region (342).
[0095] That is, the length (L10) in the second direction of the 6-1 region (311) is different from the length (L11) in the second direction of the 6-2 region (312), and specifically, the length (L10) in the second direction of the 6-1 region (311) may be smaller than the length (L11) in the second direction of the 6-2 region (312).
[0096] Additionally, the length (L12) in the first direction of the 7-1 region (321) is different from the length (L13) in the first direction of the 7-2 region (322), and specifically, the length (L12) in the first direction of the 7-1 region (321) may be smaller than the length (L13) in the first direction of the 7-2 region (322).
[0097] In addition, the length (L14) in the second direction of the 8-1 region (331) is different from the length (L15) in the second direction of the 8-2 region (332), and specifically, the length (L14) in the second direction of the 8-1 region (331) may be smaller than the length (L15) in the second direction of the 8-2 region (332).
[0098] Additionally, the length (L16) in the first direction of the 9-1 region (341) is different from the length (L17) in the first direction of the 9-2 region (342), and specifically, the length (L16) in the first direction of the 9-1 region (341) may be smaller than the length (L17) in the first direction of the 9-2 region (342).
[0099] This is because there is a higher probability that pressure will be sensed at the center of the second surface (102) rather than in an area located relatively outside the second surface (102), and accordingly, it may be preferable that the length (L18) in the second direction of the 10th area (350) is greater than the length (L10) in the second direction of the 6-1 area (311).
[0100] At this time, the length in the second direction (L10) of the 6-1 region (311), the length in the first direction (L12) of the 7-1 region (321), the length in the second direction (L14) of the 8-1 region (331), and the length in the first direction (L16) of the 9-1 region (341) are the same as each other, and the length in the second direction (L11) of the 6-2 region (312), the length in the first direction (L13) of the 7-2 region (322), the length in the second direction (L15) of the 8-2 region (332), and the length in the first direction (L17) of the 9-2 region (342) may be the same as each other. Additionally, the length (L18) in the second direction of the 10th region (350) may be greater than or equal to the length (L11) in the second direction of the 6th-2nd region (312), the length (L13) in the first direction of the 7th-2nd region (322), the length (L15) in the second direction of the 8th-2nd region (332), and the length (L17) in the first direction of the 9th-2nd region (342).
[0101] In this way, the length in the second direction (L10) of the 6-1 region (311) arranged at the outermost side, the length in the first direction (L12) of the 7-1 region (321), the length in the second direction (L14) of the 8-1 region (331), and the length in the first direction (L16) of the 9-1 region (341) are the smallest, and the length in the second direction (L11) of the 6-2 region (312), the length in the first direction (L13) of the 7-2 region (322), the length in the second direction (L15) of the 8-2 region (332), and the length in the first direction (L17) of the 9-2 region (342) are equal to or smaller than the length in the second direction (L18) of the 10 region (350), and the length in the second direction (L10) of the 6-1 region (311), and the length in the first direction of the 7-1 region (321) Since the length (L12), the length (L14) in the second direction of the 8-1 region (331), and the length (L16) in the first direction of the 9-1 region (341) are greater, pressure on the second surface (102) can be sensed more easily, and even if attached to the surface of an object having a curved surface, it can be easily attached to the curved surface by arranging the third part (311, 321, 331, 341) having a first gap (D1) and a second gap (D2) and a plurality of fourth parts (312, 322, 332, 342).
[0102] At this time, although not specifically compared, the length in the first direction of the 6-1 region (311) positioned furthest outward from the center of the second surface (102) toward the periphery may be greater than the length in the first direction of the plurality of 6-2 regions (312), and the length in the first direction of the plurality of 6-2 regions (312) may be greater than the length in the first direction of the 10 region (350). Additionally, among the plurality of 6-2 regions (312), the length in the first direction of any one 6-2 region (312) positioned relatively outward from the center of the second surface (102) toward the periphery may be greater than the length in the first direction of another 6-2 region (312) positioned relatively inwardly adjacent to it. That is, the length in the first direction of the 6 region (310) may gradually decrease in the direction from the periphery of the second surface (102) toward the center.
[0103] In addition, the length in the second direction of the 7-1 region (321), which is positioned at the outermost edge from the center of the second surface (102) toward the periphery, is greater than the length in the second direction of the plurality of 7-2 regions (322), and the length in the second direction of the plurality of 7-2 regions (322) may be greater than the length in the second direction (L18) of the 10 region (350). Furthermore, among the plurality of 7-2 regions (322), the length in the second direction of any one 7-2 region (322) positioned relatively outer from the center of the second surface (102) toward the periphery may be greater than the length in the second direction of another 7-2 region (322) positioned relatively adjacent to the inner side. That is, the length in the second direction of the 7 region (320) may gradually decrease in the direction from the periphery of the second surface (102) toward the center.
[0104] The length in the first direction of the 8-1 region (331), which is positioned furthest outward from the center of the second surface (102) toward the periphery, is greater than the length in the first direction of a plurality of 8-2 regions (332), and the length in the first direction of a plurality of 8-2 regions (332) may be greater than the length in the first direction of the 10 region (350). Additionally, among the plurality of 8-2 regions (332), the length in the first direction of any one 8-2 region (332) positioned relatively outward from the center of the second surface (102) toward the periphery may be greater than the length in the first direction of another 8-2 region (332) positioned relatively inwardly adjacent to it. That is, the length in the first direction of the 8 region (330) may gradually decrease in the direction from the periphery of the second surface (102) toward the center.
[0105] In addition, the length in the second direction of the 9-1 region (341), which is positioned at the outermost edge from the center of the second surface (102) toward the periphery, is greater than the length in the second direction of the plurality of 9-2 regions (342), and the length in the second direction of the plurality of 9-2 regions (342) may be greater than the length in the second direction (L18) of the 10 region (350). Furthermore, among the plurality of 9-2 regions (342), the length in the second direction of any one 9-2 region (342) positioned relatively outer from the center of the second surface (102) toward the periphery may be greater than the length in the second direction of another 9-2 region (342) positioned relatively adjacent to the inner side. That is, the length in the second direction of the 9 region (340) may gradually decrease in the direction from the periphery of the second surface (102) toward the center.
[0106] Meanwhile, to more easily explain the shape of the pressure sensing device according to an embodiment of the present invention, refer to FIG. 9. As shown in FIG. 9, the 6-1 region (311) includes a 5 end (311a) and a 6 end (311b), and the 7-1 region (321) may extend from the 6 end (311b) in a second direction. Additionally, the 9 region (340) includes a 7 end (341a) and an 8 end (341b), the 7 end (341a) is an end region connected to the 8 region (330), and the 8 end (341b) may be an end region facing the 5 end (311a) of the 6-1 region (311) in a second direction.
[0107] At this time, the fifth end (311a) of the sixth region (310) and the eighth end (341b) of the ninth region (340) are spaced apart by a first interval (D1) in the second direction, and the sixth-2 region (312) may be extended in the first direction from the eighth end (341b). However, the sixth-2 region (312) is extended in the first direction, and the end region where the seventh-2 region (322) is extended in the second direction may be spaced apart from the seventh-1 region (321) by a second interval (D2) in the first direction. The seventh-2 region (322) is extended in the second direction, and the end region where the eighth-2 region (332) is extended in the opposite direction to the sixth-2 region (312) in the first direction may be spaced apart from the eighth-1 region (331) by a first interval (D1) in the second direction. The 8-2 region (332) extends in the opposite direction to the 6-2 region (312) in the first direction, and the end region of the 9-2 region (342) extending in the opposite direction to the 7-2 region (322) in the second direction may be spaced apart from the 6-2 region (312) in the first direction by a second gap (D2). The 9-2 region (342) extends in the opposite direction to the 7-2 region (322) in the second direction, and the end region of the 9-2 region (342) facing the 6-2 region (312) in the second direction may be spaced apart from the 6-2 region (312) by a first gap (D1).
[0108] The above-described pattern is repeated periodically and extends to the center of the second surface (102), and the 10th region (350) can be connected to the 9th-2nd region (342) closest to the center of the second surface (102).
[0109] To explain based on this, if we define one of the plurality of fourth parts (312, 322, 332, 342) that is positioned relatively outward in the direction from the center of the second surface (102) toward the periphery as the fourth-1 part, and another one that is adjacent to the fourth-1 part and positioned relatively inward as the fourth-2 part, then the length in the first direction of the sixth area (310) of the fourth-1 part may be greater than the length in the first direction of the sixth area (310) of the fourth-2 part. At this time, the 6th area (310) of the 4-2 part is spaced apart from the 7th area (320) of the 4-1 part by a second interval (D2) in the first direction, and the 9th area (340) of the 4-2 part is spaced apart from the 9th area (340) of the 4-1 part by a second interval (D2) in the first direction, so the length of the 6th area (310) of the 4-2 part in the first direction may be equal to the length of the 9th area (340) of the 4-1 part in the first direction, the length of the 7th area (320) of the 4-1 part in the first direction, and twice the difference of the second interval (D2) from the length of the 6th area (310) of the 4-1 part in the first direction.
[0110] Additionally, since the 7th area (320) of the 4-2 part is spaced apart from the 8th area (330) of the 4-1 part by a first interval (D1) in the second direction, and the 6th area (310) of the 4-2 part is spaced apart from the 6th area (310) of the 4-1 part by a first interval (D1) in the second direction, the length of the 7th area (320) of the 4-2 part in the second direction may be equal to the length of the 8th area (330) of the 4-1 part in the second direction, the length of the 6th area (310) of the 4-2 part in the second direction, and twice the difference of the first interval (D1).
[0111] Additionally, since the 8th region (330) of the 4-2 part is spaced apart from the 9th region (340) of the 4-1 part by a second interval (D2) in the first direction, and the 7th region (320) of the 4-2 part is spaced apart from the 7th region (320) of the 4-1 part by a second interval (D2) in the first direction, the length of the 8th region (330) of the 4-2 part in the first direction may be equal to the length of the 7th region (320) of the 4-1 part in the first direction, the length of the 9th region (340) of the 4-1 part in the first direction, the length of the 7th region (320) of the 4-2 part in the second direction, and twice the second interval (D2).
[0112] Additionally, since the ninth region (340) of the fourth-2 part is spaced apart from the sixth region (310) of the fourth-1 part by a first interval (D1) in the second direction, and the eighth region (330) of the fourth-2 part is spaced apart from the eighth region (330) of the fourth-1 part by a first interval (D1) in the second direction, the length of the ninth region (340) of the fourth-2 part in the second direction may be equal to the length of the ninth region (340) of the fourth-1 part in the second direction, the length of the sixth region (310) of the fourth-2 part in the second direction, the length of the eighth region (330) of the fourth-2 part in the second direction, and twice the first interval (D1).
[0113] However, since the 8th end (341b) of the 9-1 region (341) is positioned facing the 5th end (311a) of the 6-1 region (311), the length in the 1st direction of the 6-2 region (312), which is positioned closest to the 6-1 region (311) in the 2nd direction, may be equal to the difference between the length in the 1st direction of the 6-1 region (311), the length in the 2nd direction of the 7-1 region (321), the length in the 2nd direction of the 9-1 region (341), and the 2nd gap (D2).
[0114] Refer to FIG. 10 and FIG. 11 to explain the arrangement relationship between the first electrode (200) and the second electrode (300) as described above.
[0115] First, as illustrated in FIG. 10, on the cross-section of A'A" in FIG. 2, each of the plurality of first-2 regions (212), plurality of third-2 regions (232), and fifth region (250) of the first electrode (200) is spaced apart by a first gap (D1) in the second direction, and the plurality of sixth-2 regions (312), plurality of eighth-2 regions (332), and tenth region (350) of the second electrode (300) may also be spaced apart by a first gap (D1) in the second direction. That is, the first-2 region (212) may overlap at least partially with the sixth-2 region (312) in the third direction, the third-2 region (232) may overlap at least partially with the eighth-2 region (332) in the third direction, and the fifth region (250) may overlap at least partially with the tenth region (350) in the third direction. However, the first electrode (200) and In order to improve the sensitivity of pressure sensing according to the change in distance between the second electrodes (300), it may be desirable for the first-2 region (212) to overlap with the sixth-2 region (312) in the third direction, for the third-2 region (232) to overlap with the eighth-2 region (332) in the third direction, and for the fifth region (250) to overlap with the tenth region (350) in the third direction. Although the description here is limited to the first-2 region (212), the third-2 region (232), the sixth-2 region (312), the eighth-2 region (332), and the tenth region (350), the first-1 region (211) and the sixth-1 region (311), and the third-1 region (231) and the eighth-1 region (331) can also be arranged to overlap in the third direction as described above. That is, the first region (210) overlaps with the sixth region in the third direction The third region (230) overlaps with the region (310), and the third region (230) can overlap with the eighth region (330) in the third direction.
[0116] That is, the lengths in the second direction (L1, L2) of each first region (210) overlapping in the third direction and the lengths in the second direction (L10, L11) of the sixth region (310) are the same, the lengths in the second direction (L5, L6) of each third region (230) overlapping in the third direction are the same as the lengths in the second direction (L14, L15) of the eighth region (330), and the lengths in the second direction (L9) of the fifth region (250) overlapping in the third direction and the lengths in the second direction (L18) of the tenth region (350) may be the same.
[0117] Meanwhile, referring to FIG. 11, as illustrated in FIG. 11, each of the plurality of 2-2 regions (222) and the plurality of 4-2 regions (242) of the first electrode (200) on the cross-section of B'B" of FIG. 2 are spaced apart by a second gap (D2) in the first direction, and each of the plurality of 7-2 regions (322) and the plurality of 9-2 regions (342) of the second electrode (300) may also be spaced apart by a second gap (D2) in the first direction. That is, the 2-2 region (222) may overlap at least partially with the 7-2 region (322) in the third direction, and the 4-2 region (242) may overlap at least partially with the 9-2 region (342) in the third direction. However, as described above, in order to improve the sensitivity of pressure sensing according to the change in distance between the first electrode (200) and the second electrode (300), the 2-2 region (222) It may be desirable for the 7-2 region (322) to overlap in the third direction, and for the 4-2 region (242) to overlap with the 9-2 region (342) in the third direction. Although the description here is limited to the 2-2 region (222), 4-2 region (242), 7-2 region (322), and 9-2 region (342), the 2-1 region (221), 4-1 region (241), 7-1 region (321), and 9-1 region (341) may also be arranged to overlap in the third direction as described above. That is, the 2 region (220) may overlap with the 7 region (320) in the third direction, and the 4 region (240) may overlap with the 9 region (340) in the third direction.
[0118] That is, the lengths in the first direction (L3, L4) of each second region (220) overlapping in the third direction and the lengths in the first direction (L12, L13) of the seventh region (320) are the same, and the lengths in the first direction (L7, L8) of the fourth region (240) overlapping in the third direction and the lengths in the first direction (L16, L17) of the ninth region (340) may be the same.
[0119] The pressure sensing device according to the embodiment of the present invention described above can be effectively attached to the curved surface of an object as the first electrode (200) and the second electrode (300) take the form of a spiral structure with a right angle rather than a flat shape or a band shape that intersects each other.
[0120] We have examined preferred embodiments according to the invention, and it is obvious to those skilled in the art that, in addition to the embodiments described above, the invention may be embodied in other specific forms without departing from the spirit or scope thereof.
[0121] Therefore, the embodiments described above should be regarded as exemplary rather than limiting, and accordingly, the present invention is not limited to the description above but may be modified within the scope of the appended claims and their equivalents.
Claims
1. Elastic dielectric; A first electrode disposed on the first surface of the above elastic dielectric portion; and It includes a second electrode disposed on a second surface opposite to the first surface, and The first electrode above is, A first region extending in a first direction; A second region extending from the end of the first region in a second direction perpendicular to the first direction; A third region extending from the end of the second region in the first direction opposite to the first region; and It includes a plurality of first pattern portions, each including a fourth portion extending in the opposite direction to the second portion in the second direction from the end of the third portion, and A pressure sensing device in which a plurality of the above-mentioned first pattern portions are repeated, with the first region extending in the first direction from the end of the fourth region.
2. In Paragraph 1, The above-mentioned fourth region is spaced apart from the above-mentioned first region by a first interval in the above-mentioned second direction, and The adjacent third regions are pressure sensing devices spaced apart from each other by the first interval in the second direction.
3. In Paragraph 2, The adjacent fourth regions are spaced apart from each other by a second interval in the first direction, and The adjacent second regions are pressure sensing devices spaced apart from each other by the second distance in the first direction.
4. In Paragraph 1, A plurality of the above-mentioned first pattern parts are, A first part comprising the first region that does not extend from the end of the fourth region; and A pressure sensing device comprising a plurality of second parts including the first region extending in the first direction from the end of the fourth region.
5. In Paragraph 4, The above first electrode part further includes a fifth region, and The above-mentioned fifth region is a pressure sensing device that extends from the end of the fourth region of any one of the plurality of first pattern sections and is positioned at the center of the first surface.
6. In Paragraph 5, A pressure sensing device in which the length of the first region in the second direction, which is positioned furthest from the center of the first surface in the second direction, is smaller than the length of the fifth region in the second direction.
7. In Paragraph 1, The second electrode above is, Sixth region extending in the first direction; A seventh region extending from the end of the sixth region in a second direction perpendicular to the first direction; An eighth region extending from the end of the seventh region in the first direction opposite to the sixth region; and It includes a plurality of second pattern sections, each including a ninth region extending in the opposite direction to the seventh region in the second direction from the end of the eighth region, and A pressure sensing device in which a plurality of the above-mentioned second pattern portions are repeated, with the 6th region extending in the 1st direction from the end of the 9th region.
8. In Paragraph 7, The ninth region is spaced apart from the sixth region by a first interval in the second direction, and The adjacent eighth regions are pressure sensing devices spaced apart from each other by the first interval in the second direction.
9. In Paragraph 8, The adjacent ninth regions are spaced apart from each other by a second interval in the first direction, and The adjacent seventh regions are pressure sensing devices spaced apart from each other by the second interval in the first direction.
10. In Paragraph 7, A plurality of the above-mentioned second pattern parts are, A third part comprising the sixth region that does not extend from the end of the ninth region; and A pressure sensing device comprising a fourth part including the sixth region extending in the first direction from the end of the ninth region.