Stylus pen and method for manufacturing the same

Abstract

A stylus includes: a first body having a first opening at one end and a second opening at the other end; a stylus tip, at least a portion of which protrudes from the first opening and has conductivity; a guide portion, which is attached to the second opening and includes a cavity; and a conductive member, which extends through the cavity within the first body, the conductive member being attached to the stylus tip at one end thereof, and the conductive member being electrically connected to the cavity.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to and the benefit of Korean Patent Application No. 10-2017-0168228 filed on December 8, 2017, in the Korean Intellectual Property Office, the entire contents of which are incorporated herein by reference. background

[0003] 1) Field

[0004] The present disclosure relates to a stylus pen and a manufacturing method thereof.

[0005] 2) Related technologies

[0006] Various mobile terminals such as mobile phones, smart phones, tablet personal computers, laptop computers, digital broadcast terminals, PDAs (Personal Digital Assistants), PMPs (Portable Multimedia Players), and navigation devices are provided with touch sensors.

[0007] The touch sensor in these terminals may be located on a display panel that displays an image or in an area of ​​a terminal body. When a user interacts with the terminal by touching the touch sensor, the terminal may provide the user with an intuitive user interface.

[0008] Users can use the stylus for precise touch input. Styluses can be divided into active styluses and passive styluses, depending on whether they include electronic components.

[0009] Figure 1 is a view showing a passive stylus pen according to a conventional technique. Figure 1 The stylus pen 10 includes a bullet-shaped stylus pen tip 11 and a stylus pen body 12. The stylus pen tip 11 is made entirely or partially of a conductive material.

[0010] Typically, when using the stylus 10, the user tilts the stylus 10 at a certain angle relative to the sensing surface 20, rather than holding the stylus 10 perpendicular to the sensing surface 20. If the user tilts the stylus 10 while using it, an additional capacitance is formed between the side of the conductive stylus tip 11 and the sensing surface 20. Then, due to the additional capacitance, the maximum change in capacitance occurs between a point 21 in contact with the stylus tip 11 and a point 22 in the tilt direction of the stylus 10. Therefore, not the point 21 where the stylus tip 11 is actually in contact with the sensing surface 20, but a point 22 adjacent to the point 21 is detected as the contact point. In this case, the offset 23 (hereinafter referred to as the tilt offset) between the actual contact point 21 and the actual detection point 22 may be as large as several hundred micrometers or more.

[0011] Thus, when the passive stylus pen of the conventional art is tilted, a linear error occurs according to the tilt of the stylus pen, making precise touch input difficult.

[0012] US Patent No. 9,298,285 discloses a stylus pen for solving this problem.

[0013] Figure 2 and Figure 3 is a view showing the structure of a stylus pen disclosed in US Pat. No. 9,298,285.

[0014] exist Figure 2 In the embodiment, the stylus pen 30 includes a spherical stylus pen tip 31 and a conductive member 32 connected to the stylus pen tip 31. A portion of the stylus pen tip 31 and the conductive member 32 are surrounded and fixed by a holder 33 made of a non-conductive material. The holder 33 is connected to a stylus pen body 34. Figure 2 In the structure of the stylus pen 30 shown, since a spherical stylus pen tip 31 is used, the maximum change in capacitance occurs at the contact point regardless of whether it is tilted, and since the conductive member 32 is made thin, the change in capacitance caused by the conductive member 32 can be minimized. Therefore, the tilt offset can be minimized.

[0015] However, according to Figure 2 and Figure 3 In the structure of the stylus pen shown, the distance between the grip portion and the conductive member 32 is large, so that the capacitance C1 between the user's hand and the conductive member 32 is small, causing the conductive member to float, thereby reducing the touch sensitivity of the stylus pen tip 31.

[0016] The above information disclosed in this Background section is only for enhancement of understanding of the background and therefore it may contain information that does not form the prior art that is already known in this country to a person of ordinary skill in the art. Summary of the invention

[0017] Exemplary embodiments provide a stylus pen having reduced tilt deviation, and a method of manufacturing the stylus pen.

[0018] Exemplary embodiments provide a stylus pen that enhances touch sensitivity of a touch sensor, and a method for manufacturing the stylus pen.

[0019] To achieve the above or other aspects, a stylus pen according to an exemplary embodiment is provided, which includes: a first body having a first opening at one end and a second opening at the other end; a stylus pen tip, at least a portion of which protrudes from the first opening and has conductivity; a guide portion, which is attached to the second opening and includes a cavity; and a conductive member, which extends through the cavity in the first body and is attached to the stylus pen tip at one end thereof, and is electrically connected to the cavity.

[0020] The conductive member may be in contact with an inner surface of the cavity.

[0021] The cavity may include a sidewall, and the conductive member may be in contact with the sidewall.

[0022] At least a portion of the conductive member may be bent within the cavity.

[0023] The bent end of the conductive member may be in contact with an inner surface of the cavity.

[0024] The bent portion of the conductive member may be in contact with the side wall.

[0025] The conductive member can be bent at an acute angle, and the length of the portion bent at the acute angle may be R / sin a1 or more, where R is the radius of the cavity and a1 is the acute angle.

[0026] The conductive member may be bent at an obtuse angle, and the length of the portion bent at the obtuse angle may be R / cos a1 or more, where R is the radius of the cavity and a1 is the obtuse angle.

[0027] The stylus pen may further include a second body attached to the guide portion at an opposite side of one end where the guide portion is attached to the second opening.

[0028] The guide portion may further include: a first combined portion attached to the first body, a grip portion exposed to the outside, and a second combined portion attached to the second body.

[0029] The second assembly portion may extend within the second body.

[0030] The stylus may further include a guide extension attached to the cavity, wherein the second body may be attached to the guide portion and the guide extension, and the guide extension may extend within the second body.

[0031] Due to the first body and the second body, the guide portion may not be exposed to the outside.

[0032] The conductive member may include a metal material having elasticity.

[0033] The diameter of the conductive member may be 1 mm or less.

[0034] The diameter of the stylus tip may be 0.5 mm to 3 mm, and the diameter of the first opening may be smaller than the diameter of the stylus tip.

[0035] A portion of the conductive member attached to the stylus tip may have a shape different from other portions of the conductive member to prevent the conductive member from being separated from the stylus tip.

[0036] A method for manufacturing a stylus pen according to another exemplary embodiment includes inserting a conductive member having a stylus tip attached thereto into a first opening of a first body; bending a portion of the conductive member inserted into the first opening; and inserting a portion of the conductive member into a cavity of a guide portion.

[0037] A stylus pen according to yet another exemplary embodiment includes: a stylus pen tip having conductivity, the stylus pen tip having a diameter of 0.5 mm to 3 mm; a conductive member having a measured length of 20 mm or more, the conductive member being attached to the stylus pen tip at one end thereof; and a guide portion having conductivity, the guide portion including a cavity into which the conductive member is inserted, wherein the other end of the conductive member contacts the cavity.

[0038] The cavity may include a side wall, and the conductive member may be bent once with the bent portion contacting the side wall and the other end contacting the inner surface.

[0039] The stylus pen and the manufacturing method thereof according to the present disclosure have the following advantages.

[0040] According to at least one of the exemplary embodiments of the present disclosure, a contact point of a stylus pen may be accurately detected by means of a terminal.

[0041] According to at least one of the exemplary embodiments of the present disclosure, a more intuitive interface may also be provided to the user.

[0042] Further scope of applicability of the present disclosure will become apparent from the detailed description given below. However, it should be understood that although specific embodiments of the present disclosure are pointed out, the detailed description and specific examples are given only as illustrations, because various changes and modifications within the spirit and scope of the present disclosure will become apparent to those skilled in the art based on the detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figures 1 to 3 is a view showing a stylus pen according to a conventional art.

[0044] Figure 4 is a view schematically illustrating a stylus pen according to an exemplary embodiment.

[0045] Figure 5 is a view showing a detailed structure of the stylus pen according to the first exemplary embodiment.

[0046] FIG. 6A to FIG. 6G is a view showing the structure of a part of the stylus pen according to the first exemplary embodiment.

[0047] Figure 7 is a flowchart of a method for manufacturing the stylus pen according to the first exemplary embodiment.

[0048] Figure 8 and Fig. 9 It shows that according to Figure 7 A view of a method of manufacturing a stylus.

[0049] Fig.10 is a view schematically showing a stylus pen according to a second exemplary embodiment.

[0050] Fig.11 is a view schematically showing a stylus pen according to a third exemplary embodiment.

[0051] Fig.12 is a view schematically showing a stylus pen according to a fourth exemplary embodiment.

[0052] Fig.13 is a view schematically showing a stylus pen according to a fifth exemplary embodiment.

[0053] Fig.14 is a view illustrating a method of manufacturing a portion of a stylus pen according to an exemplary embodiment.

[0054] Figures 15 to 20 It shows that according to Fig.14 A view of a portion of a method of manufacturing a stylus. DETAILED DESCRIPTION

[0055] In the following detailed description, only certain exemplary embodiments of the present invention are shown and described simply by way of illustration. As those skilled in the art will appreciate, the described embodiments can be modified in various different ways, all without departing from the spirit or scope of the present invention.

[0056] Accordingly, the drawings and description are to be regarded as illustrative in nature and not restrictive. Like reference numerals refer to like elements throughout the specification.

[0057] In addition, unless explicitly described to the contrary, the word “comprise” and variations such as “comprising” or “consisting of” will be understood to imply the inclusion of stated elements but not the exclusion of any other elements.

[0058] Figure 4 is a view illustrating a stylus pen according to an exemplary embodiment.

[0059] like Figure 4 As shown, the stylus pen 100 according to an exemplary embodiment includes a stylus tip 110 , a conductive member 120 , a first body 130 , a second body 140 , and a guide portion 150 .

[0060] The stylus tip 110 may have an overall spherical shape. A portion of the stylus tip 110 may have a predetermined curvature (eg, a hemispherical shape).

[0061] The stylus tip 110 may be positioned in the first opening 131 of the first body 130. At least a portion of the stylus tip 110 includes a conductive material. In this case, the stylus tip 110 preferably has a resistance of 10Ω or less. In addition, the diameter of the stylus tip 110 is preferably 0.1 mm to 3 mm, particularly preferably 0.5 mm to 2 mm. At least a portion of the stylus tip 110 protrudes from the first opening 131, and at least a portion thereof is inserted into the first body 130 through the first opening 131. For example, if the diameter of the stylus tip 110 is 2 mm, a portion of the stylus tip 110 is inserted into the first body 130 through the first opening 131, so that the stylus tip protrudes 1.2 mm from the first opening 131.

[0062] The conductive member 120 is a wire having conductivity, which is connected to the stylus tip 110 and may be positioned within the first body 130. The conductive member 120 includes a metal material. The stylus tip 110 and the conductive member 120 may be configured as described later. Fig.15 The manufacturing method described is insert injection molding.

[0063] The conductive member 120 may be electrically connected to the guide portion 150 to be held by the user. For example, the conductive member 120 may extend up to the guide portion 150 and directly contact the guide portion 150.

[0064] The length of the conductive member 120 may be 20 mm or more. In addition, the diameter of the conductive member 120 may be 0.1 mm to 1 mm to minimize the effect of tilt on sensitivity. The shape of the conductive member 120 may be a cylinder, a polygonal column, a column that is at least partially curved, a convex column, a truncated pyramid, a truncated cone, etc., but is not limited to these shapes.

[0065] A portion of the stylus tip 110 and the conductive member 120 may be disposed within the first body 130. In this case, the stylus tip 110 may be fixed to the first opening 131. Also, the first body 130 is attached to the guide portion 150.

[0066] The first body 130 may include a truncated cone and a column extending from the first opening 131 and combined together. Although the first body 130 is shown as an integral combination of a truncated cone portion and a column portion, the two portions may be separated from each other. The column portion may be in the shape of a cylinder, a polygonal column, a column that is at least partially curved, a convex column, a truncated pyramid, a truncated cone, etc., but is not limited to these shapes. The first body 130 may be made of a non-conductive material.

[0067] The guide portion 150 may include a conductive material. The guide portion 150 may be held by a user. The conductive portion of the guide portion 150 may be exposed to the outside so as to be directly held by the user. Alternatively, the conductive portion of the guide portion 150 may be surrounded by a non-conductive outer surface.

[0068] The guide portion 150 may be located 20 mm to 70 mm away from the stylus tip 110. Preferably, the guide portion 150 to be held by the user may be 10 mm high and may be located 20 mm to 40 mm away from the stylus tip 110.

[0069] The shape of the outer surface of the guide portion 150 may be a cylinder, a polygonal cylinder, an at least partially curved cylinder, a convex cylinder, a truncated pyramid, a truncated cone, etc., but is not limited to these shapes.

[0070] The guide portion 150 may be electrically connected to the conductive member 120. The connection between the conductive member 120 and the guide portion 150 may be established in various ways. Then, the stylus tip 110, the conductive member 120, and the guide portion 150 may be electrically connected. When the guide portion 150 is held by the user and the stylus tip 110 is close to the sensing surface 200 at the same time, the charge is transferred from the stylus tip 110 to the user through the conductive member 120 and the guide portion 150, thereby further enhancing the touch sensitivity of the stylus tip 110.

[0071] The second body 140 is attached to the guide portion 150. The shape of the outer surface of the second body 140 may be a cylinder, a polygonal cylinder, an at least partially curved cylinder, etc., but is not limited to these shapes. The second body 140 may be made of a non-conductive material.

[0072] Next, refer to Figure 5 , the stylus pen 100 according to an exemplary embodiment will be described in detail.

[0073] Figure 5 is a view showing a detailed structure of the stylus pen 100 according to the first exemplary embodiment.

[0074] like Figure 5 As shown, the stylus pen 100 includes a stylus tip 110 , a conductive member 120 , a first body 130 , and a guide portion 150 .

[0075] The stylus tip 110 is attached to the conductive member 120. At least a portion of the conductive member 120 in the stylus tip 110 (see Fig.16TA) of the stylus tip 110, wherein at least a portion of TA is attached to the stylus tip 110. For example, the width (or thickness or diameter) of at least a portion of the conductive member 120 in the stylus tip 110 that is attached to the stylus tip 110 is greater than the width (or thickness or diameter) of the conductive member 120. Alternatively, at least a portion of the conductive member 120 in the stylus tip 110 that is attached to the stylus tip 110 may be bent into a hook shape. This may prevent the conductive member 120 from being separated from the stylus tip 110. Portions of the conductive member 120 may be deformed by press molding and various other molding methods.

[0076] A portion of the stylus tip 110 may be positioned in the first opening 131 of the first body 130. The conductive member 120 may extend from the stylus tip 110 and be positioned in the first opening 131 of the first body 130 and the cavity 133.

[0077] The first opening 131 is located at one end of the first body 130, and the second opening 134 is located at the other end of the first body 130. The cavity 133 may be located between the first opening 131 and the second opening 134. The first body 130 is attached to the guide portion 150.

[0078] The guide portion 150 may be electrically connected to the conductive member 120. For example, the guide portion 150 may be in direct contact with the conductive member 120. Alternatively, even if the guide portion 150 is not in direct contact with the conductive member 120, the guide portion 150 and the conductive member 120 may be capacitively coupled.

[0079] The conductive member 120 includes a metal material. The conductive member 120 may be positioned in the cavity 152 of the guide portion 150. At least a portion PA of the conductive member 120 positioned in the cavity 152 of the guide portion 150 is deformed. For example, at least a portion PA of the conductive member 120 is bent within the cavity 152 of the guide portion 150. FIG. 6A to FIG. 6G At least a portion PA of the conductive member 120 is described.

[0080] FIG. 6A to FIG. 6G is a view showing the structure of a portion PA of the stylus pen according to the first exemplary embodiment.

[0081] like Fig. 6A As shown, a portion of the conductive member 120 extending along the first direction X is bent in a second direction Y perpendicular to the first direction. If the diameter of the cavity 152 is 2R, the length of the conductive member 120 bent along the second direction Y may be R or more. Because the conductive member 120 is bent, one end 122 of the conductive member 120 contacts the inner surface 153 of the cavity 152 at the contact point CP1.

[0082] like Figure 6BAs shown, a portion of the conductive member 120 extending along the first direction X is bent at a predetermined angle a1 relative to the first direction. If the diameter of the cavity 152 is 2R, the length d of the conductive member 120 bent at the predetermined angle a1 may be R / sina1 or greater. Because the conductive member 120 is bent, one end 122 of the conductive member 120 contacts the inner surface 153 of the cavity 152 at the contact point CP1.

[0083] The conductive member 120 may have elasticity. The deformed portion PA of the conductive member 120 may have a restoring force to restore its original shape (e.g., a linear shape). A portion PA of the conductive member 120 may be in direct contact with the guide portion 150 because it is straightened in the cavity 152 of the guide portion 150 by this restoring force.

[0084] Although Figure 6B It is shown that the conductive member 120 is bent at an acute angle, but the conductive member 120 can be bent at an obtuse angle, in which case the length d by which the conductive member 120 is bent at the predetermined angle a1 may be R / cos a1 or more.

[0085] like Figure 6C As shown, two portions of the conductive member 120 extending along the first direction X are bent into a curved shape. Because the conductive member 120 is bent, one bent portion 122 of the conductive member 120 contacts the inner surface 153 of the cavity 152 at the contact point CP1.

[0086] like Fig.6D As shown, the side wall 154 may be positioned within the cavity 152 of the guide portion 150. One end 122 of the conductive member 120 extending in the first direction X contacts the side wall 154 at a contact point CP2. Due to the side wall 154, the conductive member 120 may be bent within the cavity 152.

[0087] like Fig. 6E As shown, the sidewall 154 may be positioned within the cavity 152 of the guide portion 150. Because the conductive member 120 extending in the first direction X is bent, the bent portion contacts the sidewall 154 at the contact point CP2. Due to the sidewall 154, the conductive member 120 may be bent within the cavity 152.

[0088] like Fig. 6F As shown, the side wall 154 may be positioned within the cavity 152 of the guide portion 150. Because the conductive member 120 extending in the first direction X is bent, the bent portion contacts the side wall 154 at the contact point CP2, and one end 122 contacts the inner surface 153 of the cavity 152 at the contact point CP1. Due to the side wall 154, the conductive member 120 may be bent within the cavity 152.

[0089] like Figure 6GAs shown, a portion of the conductive member 120 extending in the first direction X within the cavity 152 is separated from the inner surface 153 of the cavity 152. In this case, even if the conductive member 120 is not in direct contact with the cavity 152, the conductive member 120 and the cavity 152 may be capacitively coupled by using the air in the cavity 152 as a dielectric. Although not shown, a portion PA of the conductive member 120 extending in the first direction X may be bent while being separated from the inner surface 153.

[0090] As reference FIG. 6A to FIG. 6G As described, the conductive member 120 may directly contact the guide portion 150 in various shapes within the cavity 152 , but the shape of the conductive member 120 is not limited to this description.

[0091] Next, we will refer to Figures 7 to 9 A method of manufacturing the above-described stylus pen 100 is described.

[0092] Figure 7 is a flowchart of a method for manufacturing the stylus pen 100 according to the first exemplary embodiment, Figure 8 and Fig. 9 It shows that according to Figure 7 1. A method of manufacturing the stylus 100 is shown in FIG.

[0093] refer to Figure 7 , inserting the stylus tip 110 and the conductive member 120 into the first opening 131 of the first body 130 (S110), and combining the stylus tip 110 to the first body 130 (S120). Figure 8 Steps S110 and S120 are described.

[0094] like Figure 8 As shown in (a), the first body 130 includes a first opening 131, a through hole 132, a cavity 133, a second opening 134, and a combination portion 135. The conductive member 120 connected to the stylus tip 110 may be inserted into the first opening 131 along the first direction D1. The conductive member 120 may be inserted into the first body 130 so that the stylus tip 110 contacts the first opening 131.

[0095] Then, if Figure 8 As shown in (b), the conductive member 120 may be positioned in the through hole 132, the cavity 133, and the second opening 134. By applying a bonding agent or the like to the bonding portion 131a and by injecting a bonding agent or the like in the cavity 133, the conductive member 120 may be bonded to at least portions BA1 and BA2 of the through hole 132 and the cavity 133.

[0096] Next, the end portion PA of the conductive member 120 is deformed (S130), and the guide portion 150 is inserted into the second opening 134 of the first body 130 (S140). Fig. 9 Steps S130 and S140 are described.

[0097] like Fig. 9 As shown in (a), when the conductive member 120 is inserted into the first body 130, one end PA of the conductive member 120 may be deformed. For example, the end PA is bent into 6A to 6F The end portion PA of the conductive member 120 may be deformed by various molding methods.

[0098] Although a portion of the conductive member 120 is bent once in the above description, the number of times the conductive member 120 is bent is not limited. At least a portion of the conductive member 120 attached to the guide portion 150 may be bent so as to be in direct contact with the guide portion 150 .

[0099] In addition, the end PA of the conductive member 120 may be cut into a predetermined length. For example, the end PA may be cut into a predetermined length so that Figure 6G In this way, there is no direct contact with the cavity 152 , thereby adjusting the length of the conductive member 120 .

[0100] like Fig. 9 (a) and Fig. 9 As shown in (b), the first body 130 may be attached to the guide portion 150 along the first direction D1. For example, the combining portion 135 may be inserted into the cavity 152 through the first opening 151 of the guide portion 150.

[0101] In the stylus pen 100 manufactured according to the above method, the stylus pen tip 110, the conductive member 120, and the guide portion 150 are electrically connected. The user can use the stylus pen 100 by holding the guide portion 150 exposed to the outside. Moreover, since the guide portion 150 is extended, the user can easily hold the guide portion 150. The charge transferred through the touch electrode in response to the driving signal can be synchronized with the user's hand in the ground state via the stylus pen 100. Therefore, the stylus pen 100 according to the exemplary embodiment can provide the user with improved touch sensitivity.

[0102] In addition, since the diameter of the conductive member 120 is smaller than the diameter of the stylus tip 110 , the stylus 100 may improve the tilt deviation of the stylus 100 .

[0103] Next, refer to Figures 10 to 13 , the stylus pens 102 , 400 , 402 , and 404 according to exemplary embodiments will be described.

[0104] Figure 10-13is a view schematically showing a stylus pen according to second to fifth exemplary embodiments.

[0105] First, refer to Fig.10 , compared with the stylus pen 100 of the first exemplary embodiment, the stylus pen 102 according to the second exemplary embodiment further includes a second body 140 .

[0106] The second body 140 is attached to the guide portion 150. The shape of the outer surface of the second body 140 may be a cylinder, a polygonal column, a column that is at least partially curved, etc., but is not limited to these shapes. The second body 140 may be made of a non-conductive material. The combined portion 141 of the second body 140 is inserted into the cavity 152 through the second opening 154 of the guide portion 150.

[0107] Next, refer to Fig.11 , a stylus pen 400 according to a third exemplary embodiment will be described. The stylus pen 400 includes a stylus pen tip 410, a conductive member 420, a first body 430, a second body 440, and a guide portion 450.

[0108] The stylus tip 410 is attached to the conductive member 420. At least a portion of the conductive member 420 in the stylus tip 410 that is attached to the stylus tip 410 is deformed. For example, the width (or thickness or diameter) of at least a portion of the conductive member 420 in the stylus tip 410 that is attached to the stylus tip 410 is greater than the width (or thickness or diameter) of the conductive member 420. Alternatively, at least a portion of the conductive member 420 in the stylus tip 410 that is attached to the stylus tip 410 may be bent into a hook shape. This may prevent the conductive member 420 from being separated from the stylus tip 410. A portion of the conductive member 420 may be deformed by press molding and various other molding methods.

[0109] A portion of the stylus tip 410 may be positioned in the first opening 431 of the first body 430. The conductive member 420 may extend from the stylus tip 410 and be positioned in the first opening 431 of the first body 430 and the cavity 433.

[0110] The first opening 431 is located at one end of the first body 430, and the second opening 432 is located at the other end of the first body 430. The cavity 433 may be positioned between the first opening 431 and the second opening 432. The first body 430 is attached to the guide portion 450.

[0111] The guide portion 450 may be electrically connected to the conductive member 420. For example, the guide portion 450 may be in direct contact with the conductive member 420.

[0112] The conductive member 420 may be positioned in the cavity 452 of the guide portion 450. At least a portion PA of the conductive member 420 positioned in the cavity 452 of the guide portion 450 is deformed. For example, at least a portion PA of the conductive member 420 is bent.

[0113] The conductive member 420 includes a metal material having elasticity. The deformed portion PA of the conductive member 420 may have a restoring force to restore its original shape (e.g., a linear shape). A portion PA of the conductive member 420 may be in direct contact with the guide portion 450 because it is straightened in the cavity 452 of the guide portion 450 by this restoring force.

[0114] The guide portion 450 is attached to the second body 440. The guide portion 450 may be attached to the second body 440 at the opening 441 of the second body 440. For example, the combining portion 454 of the guide portion 450 may be inserted into and attached to the opening of the second body 440.

[0115] like Fig.12 As shown, a stylus pen 402 according to another exemplary embodiment of the present invention includes a stylus pen tip 410 , a conductive member 420 , a first body 430 , a guide portion 450 , and a second body 440 .

[0116] Fig.12 The stylus 402 is mostly similar to Fig.11 4 , but compared with the stylus pen 400, the guide portion 450 is completely inserted into the first body 430 and the second body 440. Therefore, only this difference will be described.

[0117] The guide portion 450 may be electrically connected to the conductive member 420. The connection between the conductive member 420 and the guide portion 450 may be established in various ways.

[0118] The guide portion 450 is completely inserted into the first body 430 and the second body 440. The outer surface of the guide portion 450 is covered by the first body 430 and the second body 440. Fig.12 In the embodiment, the second opening 432 of the first body 430 is larger than Fig.11 The second opening 432 extends further and surrounds the guide portion 450 .

[0119] In the case of the stylus pen 402 according to the present exemplary embodiment, if the user holds a portion of the first body 430 or the second body 440, the guide portion 450 and the user's hand can be capacitively coupled via that portion of the first body 430 or the second body 440. Therefore, the charge transferred through the touch electrode in response to the driving signal can be synchronized with the user's hand. Thus, the stylus pen 402 according to the exemplary embodiment can provide the user with improved touch sensitivity.

[0120] like Fig.13 As shown, a stylus pen 404 according to yet another exemplary embodiment of the present invention includes a stylus pen tip 410 , a conductive member 420 , a first body 430 , a second body 440 , a guide portion 450 , and a guide extension 460 .

[0121] Fig.13 Most of the stylus 404 is related to Fig.11 4 is similar to stylus 400 , but stylus 404 also includes a guide extension 460 attached to guide portion 450 . Therefore, only this difference will be described.

[0122] The guide extension 460 is attached to the guide portion 450. The shape of the outer surface of the guide extension 460 may be a cylindrical shape, a polygonal cylindrical shape, a cylindrical shape that is at least partially curved, etc., but is not limited to these shapes. The guide extension 460 may be made of a conductive material, which may be the same material as the material of the guide portion 450 or a material different from the material of the guide portion 450.

[0123] Also, guide extension 460 may be formed of a conductor extending along the length of stylus 404. The shape of the conductor is not limited.

[0124] The guide extension 460 includes a combining portion 461. The cavity 452 of the guide portion 450 is formed to penetrate the guide portion 450. The combining portion 461 is inserted into the cavity 452 of the guide portion 450. Therefore, the guide extension 460 is electrically connected to the guide portion 450.

[0125] Despite Fig.13 Although not shown in FIG. 4 , the combining portion 461 may directly contact a portion of the conductive member 420 within the cavity 452 . Thus, the guide extension 460 may be electrically connected to the stylus tip 410 and the conductive member 420 .

[0126] The user can use the stylus 404 by holding the grip 451 of the guide portion 450 exposed to the outside. The charge transferred through the touch electrode in response to the drive signal can be synchronized with the user's hand in the ground state via the stylus 404. In addition, the guide extension 460 attached to the guide portion 450 extends within the second body 440. In this way, if the user holds the second body 440, the guide extension 460 and the user's hand are capacitively coupled via the second body 440. Thus, the charge transferred through the touch electrode in response to the drive signal can be synchronized with the user's hand. Therefore, the stylus 402 according to the exemplary embodiment can provide the user with improved touch sensitivity.

[0127] Additionally, since the diameter of the conductive member 420 is smaller than the diameter of the stylus tip 410 , the stylus 404 has improved tilt offset compared to the stylus 400 .

[0128] Next, we will refer to Figures 14 to 20 A method for manufacturing the above-mentioned stylus tip 110 and the conductive member 120 attached thereto is further described. The step of manufacturing the stylus tip may be performed before step S110.

[0129] Fig.14 is a view showing a method for manufacturing a portion of a stylus pen according to an exemplary embodiment, Figures 15 to 20 It shows that according to Fig.14 A view of a portion of a method of manufacturing a stylus.

[0130] refer to Fig.14 First, the conductive member 120 and the first demolding part 340 are disposed in the molding space ( 312 and 322 ) of the manufacturing apparatus 300 ( S210 ).

[0131] like Fig.15 As shown, the manufacturing apparatus 300 includes a first mold portion 310 and a second mold portion 320. A first cavity 312 is formed in the first mold portion 310, and a second cavity 322 is formed in the second mold portion 320. When the first mold portion 310 is engaged with the second mold portion 320, the first cavity 312 and the second cavity 322 may form a molding space (312 and 322). The shape of the molding space (312 and 322) may correspond to the stylus tip 110, and is shown in the following figure as having an overall spherical shape.

[0132] An inlet 326 for injecting the molten material 350 , a first insertion opening 328 for inserting the conductive member 120 , and a second insertion opening 324 for inserting the first demolding portion 340 are formed in the second mold portion 320 .

[0133] like Fig.16 As shown, in step S210, the conductive member 120 is inserted through the first insertion opening 328, and one end thereof may be positioned within the molding space (312 and 322). In this case, a portion TA of the conductive member 120 located within the molding space (312 and 322) may be deformed in shape. The portion TA of the conductive member 120 may be deformed by press molding and various other molding methods. Moreover, the other end of the conductive member 120 may be supported by the second demolding portion 330.

[0134] The first demolding part 340 may be inserted through the second insertion opening 324 and positioned at a boundary of the molding space (312 and 322) and the second insertion opening 324. The first demolding part 340 may prevent the molten material 350 from overflowing from the molding space (312 and 322) through the second insertion opening 324.

[0135] The molten material 350 is injected (S220). The molten material 350 includes molten metal, resin composition, etc. In this case, the molten metal and the resin composition may be the molten material 350 formed of a material that becomes conductive after cooling.

[0136] like Fig.17 As shown, the molten material 350 may be injected and fill the molding spaces (312 and 322) through the inlet 326. As the molten material 350 injected into the molding spaces (312 and 322) is cooled, the molten material 350 may solidify and fuse to the conductive member 120 within the molding spaces (312 and 322).

[0137] When cooling is completed, the first mold part 310 is removed (S230). Fig.18 As shown, the first mold portion 310 and the second mold portion 320 may be moved in opposite directions, or the first mold portion 310 may be removed by separating it from the second mold portion 320 .

[0138] Next, the second mold part 320 is removed (S240). Fig.19 As shown, a force is applied to the first demolding portion 340 along the direction D3, and a force is applied to the second demolding portion 330 along the direction D4, so that the stylus tip 110 can be demolded from the second cavity 322, as shown in FIG. Fig. 20 That is, the stylus tip 110 applies pressure to the first demolding portion 340 and the second demolding portion 330 in a direction in which it is separated from the molding space ( 312 and 322 ), thereby demolding the stylus tip 110 . Surface treatment may be performed on the surface of the stylus tip 110 .

[0139] In the above-mentioned injection molding method, the stylus tip 110 and the conductive member 120 can be combined in such a manner that the conductive member 120 is inserted into the stylus tip 110. The combination of the stylus tip 110 and the conductive member 120 formed by the above-mentioned injection molding method can have improved durability and reduce concerns about separation or damage due to external impact. Another advantage is that compared with other methods of combining the stylus tip 110 and the conductive member 120, mass production can be performed at a low production cost.

[0140] The foregoing detailed description should not be construed as limiting in all respects, but rather as illustrative. The scope should be determined by a reasonable interpretation of the appended claims, and all changes that come within the range of equivalents are intended to be embraced within the scope.

Claims

1. A touch pen, comprising: a first body having a first opening at one end and a second opening at another end; a stylus tip, at least a portion of which protrudes from the first opening and is conductive; a guide portion attached to the second opening and comprising a cavity, wherein the guide portion is configured to be gripped by a user; and a conductive member, the conductive member being a wire having conductivity, extending through the cavity within the first body and having one end thereof attached to the stylus tip, and the conductive member being electrically connected to the cavity so that the stylus tip, the conductive member, and the guide portion are electrically connected, wherein at least a portion of the conductive member is bent within the cavity; wherein the bent end of the conductive member contacts the inner surface of the cavity; and The cavity includes a sidewall, and the conductive member is in contact with the sidewall. 2 . The stylus pen according to claim 1 , wherein the conductive member contacts an inner surface of the cavity. The stylus pen according to claim 1 , wherein a bent portion of the conductive member contacts the side wall. 4 . The stylus pen according to claim 1 , wherein the conductive member is bent at an acute angle, and a length of a portion bent at the acute angle is R / sin a1 or more, where R is a radius of the cavity and a1 is the acute angle. 5 . The stylus pen of claim 1 , wherein the conductive member is bent at an obtuse angle, and a length of a portion bent at the obtuse angle is R / cos a1 or more, where R is a radius of the cavity and a1 is the obtuse angle. 6 . The stylus pen according to claim 1 , further comprising a second body attached to the guide portion at an opposite side of one end of the guide portion to which the second opening is attached. 7 . The stylus pen according to claim 6 , wherein the guide portion further comprises a first assembly portion attached to the first body, a grip portion exposed to the outside, and a second assembly portion attached to the second body. The stylus pen according to claim 7 , wherein the second assembly portion extends within the second body.

9. The stylus of claim 7, further comprising a guide extension attached to the cavity, Wherein the second body is attached to the guide portion and the guide extension, and the guide extension extends within the second body. 10 . The stylus pen of claim 6 , wherein the guide portion is not exposed to the outside due to the first body and the second body. The stylus pen according to claim 1 , wherein the conductive member comprises a metal material having elasticity. 12 . The stylus pen according to claim 1 , wherein a diameter of the conductive member is 1 mm or less. 13 . The stylus pen according to claim 1 , wherein a diameter of the stylus pen tip is 0.5 mm to 3 mm, and a diameter of the first opening is smaller than the diameter of the stylus pen tip. 14 . The stylus pen according to claim 1 , wherein a portion of the conductive member attached to the stylus pen tip has a shape different from other portions of the conductive member to prevent the conductive member from being separated from the stylus pen tip.

15. A method for manufacturing a stylus pen, the method comprising: inserting a conductive member to which a stylus tip is attached into the first opening of the first body, wherein the conductive member is a wire having conductivity; bending a portion of the conductive member inserted into the first opening; as well as inserting a portion of the conductive member into a cavity of a guide portion configured to be held by a user so that the stylus tip, the conductive member, and the guide portion are electrically connected, wherein at least a portion of the conductive member is bent within the cavity; wherein the bent end of the conductive member contacts the inner surface of the cavity; and The cavity includes a sidewall, and the conductive member is in contact with the sidewall.

16. A touch pen, comprising: A stylus tip, wherein the stylus tip is conductive and has a diameter of 0.5 mm to 3 mm; a conductive member, the conductive member being a wire having conductivity and having a measured length of 20 mm or more, the conductive member being attached at one end thereof to the stylus tip; as well as a guide portion having conductivity, the guide portion including a cavity into which the conductive member is inserted, and the guide portion is configured to be held by a user, wherein the other end of the conductive member contacts the cavity so that the stylus tip, the conductive member and the guide portion are electrically connected, wherein at least a portion of the conductive member is bent within the cavity; wherein the bent end of the conductive member contacts the inner surface of the cavity; and The cavity includes a sidewall, and the conductive member is in contact with the sidewall. 17 . The stylus pen according to claim 16 , wherein the conductive member is bent once, the bent portion contacts the side wall and the other end contacts the inner surface.

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