Stylus pen including a sealing component.

Abstract

In order to manufacture an EMR type or capacitive resonant stylus pen capable of generating a maximum output signal, how to design an internal resonant circuit and a pen structure is a very important factor.SOLUTION: According to an aspect of the present invention, there is provided a stylus pen including: a housing; and a refill body having one end disposed outside the housing and the other end disposed inside the housing and configured to move in a longitudinal direction by an external force acting on the one end, the refill body being disposed inside the housing, An inductor unit including a ferrite core having a through-hole through which the core body passes and a coil wound around an outer surface of the ferrite core, a capacitor unit electrically connected to the inductor unit to form a resonance circuit, and at least one sealing member configured to block a plurality of moisture inflow paths passing through the core body opening of the housing.SELECTED DRAWING: Figure 54

Description

Technical Field

[0001] The present invention relates to a stylus pen, and more particularly, to a sealing member capable of blocking one or a plurality of water inflow paths inside the stylus pen and a stylus pen including the same.

Background Art

[0002] A stylus pen is a device that can be used to input data by lightly touching the screen in a pen shape when dragging or clicking. Users use a stylus pen for precise touch input.

[0003] Stylus pens can be classified into active stylus pens and passive stylus pens depending on whether they are equipped with a battery and electronic components inside.

[0004] Active stylus pens are superior in basic performance compared to passive stylus pens and have the advantage of being able to provide additional functions (pen pressure, hovering, buttons), but the pens themselves are expensive and require a power source and a method of charging the battery, so there is a disadvantage that there are not many actual users other than some high-end users.

[0005] Passive stylus pens have the advantages of being cheaper than active stylus pens and not requiring a battery, but have the disadvantage of being difficult to recognize precise touches compared to active stylus pens. However, recently, technologies such as the EMR (Electro Magnetic Resonance) method, which is an inductive resonance method, and the capacitive resonance method have been proposed to implement passive stylus pens capable of precise touch recognition.

[0006] While the EMR method excels in the quality of writing / drawing, which is the core function of a stylus pen, it has the disadvantage of being thicker and more expensive because it requires a separate EMR sensor panel and EMR driver IC in addition to the capacitance touch panel.

[0007] Capacitive resonant technology is a method that uses common capacitance touch sensors and touch controller ICs to improve IC performance and support pen touch without incurring additional costs.

[0008] In EMR or capacitive resonant methods, for a touch sensor to more accurately identify a touch from a stylus pen, the amplitude of the resonant signal must be large. This ensures that the frequency of the drive signal transmitted to the stylus pen is approximately the same as the resonant frequency of the resonant circuit built into the stylus pen. However, conventional EMR or capacitive resonant methods suffer from a problem where, even if the resonant frequency and the drive signal frequency match, the signal attenuation is very large, making signal transmission difficult. As a result, despite years of attempts by numerous touch controller IC vendors, sufficient output signals have not been achieved, and no company has yet succeeded in mass production.

[0009] Therefore, in order to manufacture an EMR or capacitive resonant stylus pen that can produce the maximum output signal, how the internal resonant circuit and the structure of the pen are designed are extremely important factors.

[0010] Figures 1(a) through (c) are diagrams illustrating one of the requirements of a conventional stylus pen.

[0011] The external design of conventional stylus pens, including the stylus pens 10a and 10b shown in Figures 1(a) and 1(c), must meet certain requirements in consideration of the user's environment.

[0012] One of the aforementioned requirements is that the conventional stylus pens 10a and 10b must be able to draw when tilted at a predetermined angle (e.g., 60°) with respect to a predetermined contact surface 31.

[0013] In particular, with some conventional stylus pens 10a and 10b, if a certain force F is applied after contact with the surface of the display panel 300, the pen tip is pressed and a portion of it enters the housing 19. However, even when the pen tip is pressed and tilted at a predetermined angle (e.g., 60°), some stylus pens 10a and 10b should not cause any problems with drawing.

[0014] In other words, when the conventional stylus pens 10a and 10b are tilted relative to the contact surface 31, the external mechanisms of the stylus pens 10a and 10b (e.g., the housing 19) must not prevent them from tilting to a predetermined angle (e.g., 60°).

[0015] Figure 2 is a simplified diagram showing the internal structure of a conventional stylus pen.

[0016] The conventional stylus pens 10c and 10d shown in Figure 2 consist of a pen tip 11, inductor sections 13 and 13', a capacitor section 15, and a housing 19. Other additional components may also exist.

[0017] The inductor sections 13 and 13' consist of ferrite cores 131 and 131' and a coil 133. The pen tip 11 has a structure in which a portion is inserted into the through-holes of the ferrite cores 131 and 131'.

[0018] The inductor sections 13, 13' and the capacitor section 15 are electrically connected to each other to form an LC resonant section. This LC resonant section can resonate in response to a drive signal provided from the transmitter side located outside the stylus pens 10c, 10d, and is configured to emit a predetermined signal (hereinafter referred to as the pen signal) through resonance.

[0019] The shape of the ferrite core 131' of the inductor section 13' of the stylus pen 10d shown on the right side of Figure 2 is different from the ferrite core 131 of the inductor section 13 of the stylus pen 10c shown on the left side. Specifically, the ferrite core 131' of the stylus pen 10d shown on the right side has a shape in which the width narrows as it goes down towards the lower end (hereinafter referred to as a tapered shape). Through this tapered shape, the ferrite core 131' can be positioned even closer to the lower end side (or the pen tip side) of the housing 19 by a predetermined length H.

[0020] In the conventional stylus pens 10c and 10d shown in Figure 2, the magnitude of the pen signal received by the receiver located outside the stylus pens 10c and 10d can change depending on the position of the inductor sections 13 and 13' within the housing 19. If possible, it is preferable to determine the position of the inductor sections 13 and 13' so that the magnitude of the pen signal increases.

[0021] The ferrite core 131' of the stylus pen 10d shown on the right side of Figure 2 is positioned even closer to the end of the pen than the ferrite core 131 of the stylus pen 10c shown on the left side, resulting in a relatively larger pen signal received by the receiver. However, the tapered shape of the ferrite core 131' of the stylus pen 10d shown on the right side has limitations in maximizing the pen signal received by the receiver.

[0022] Furthermore, it is also important to maximize the magnitude of the pen signal received by the receiver while stably housing the inductor sections 13 and 13' inside the housing 19.

[0023] On the one hand, due to its characteristics, a stylus pen is used in various environments and is highly likely to be damaged by external factors. In particular, the inflow of moisture can have a significant impact on the function of the stylus pen. The interior of the stylus pen contains precise electronic components, and when moisture such as water or humidity flows in, it may cause corrosion of the components or lead to an electrical short circuit, reducing the function of the stylus pen. Such problems will shorten the lifespan of the stylus pen and cause inconvenience to users.

[0024] Currently, some of the stylus pens available on the market have a waterproof function, but there are problems such as being incomplete or using expensive special materials, which increases the manufacturing cost. Therefore, the development of a technology that can prevent moisture from flowing into the interior of the stylus pen in a more efficient and economical way is required.

Summary of the Invention

Problems to be Solved by the Invention

[0025] The problem to be solved by the present invention is to provide a sealing member that can block multiple moisture inflow paths of the stylus pen and a stylus pen including the same.

[0026] It is also to provide a sealing member that can exert an additional moisture inflow path blocking effect through an adhering portion and a stylus pen including the same.

[0027] It is also to provide a buffer member that can perform a buffer function and a waterproof function, a stylus pen including the same, and a method for minimizing the size of the buffer member.

Means for Solving the Problems

[0028] The stylus pen according to an embodiment of the present invention includes a housing, a core body having one end disposed outside the housing and the rest disposed inside the housing, and configured to move along the longitudinal direction by an external force acting on the one end, an inductor unit disposed inside the housing and including a ferrite core having a through-hole through which the core body passes and a coil wound around an outer surface of the ferrite core, a capacitor unit electrically connected to the inductor unit to form a resonance circuit, and at least one sealing member configured to block a plurality of moisture inflow paths passing through a core body opening of the housing.

[0029] Here, the plurality of moisture inflow paths may include a first moisture inflow path that is a path through which moisture flows into the inside of the stylus pen through the core body opening of the housing and through a space between the housing and the inductor unit, and a second moisture inflow path that is a path through which moisture flows into the inside of the stylus pen through the core body opening of the housing and through the through-hole of the ferrite core.

[0030] Here, the plurality of sealing members may include a first sealing member configured to block the first moisture inflow path and a second sealing member configured to block the second moisture inflow path.

[0031] Here, the first sealing member may be disposed to cover at least a part of an outer surface of the ferrite core and may be disposed in close contact with an inner wall of the housing.

[0032] Here, the housing further includes a fixing bracket fixedly disposed inside the housing and coupled to one end of the ferrite core, and the first sealing member may be disposed to cover at least a part of an outer surface of the fixing bracket and may be disposed in close contact with an inner wall of the housing.

[0033] The present invention further includes a fixing bracket fixedly positioned inside the housing and coupled to one end of the ferrite core, wherein the fixing bracket includes a partition wall in contact with the ferrite core, and the second sealing member is positioned in the partition wall such that the core body fills the outer casing of a through-hole in the partition wall through which the partition wall penetrates, and the second sealing member may be positioned in close contact with the core body in the portion of the core body that penetrates the through-hole in the partition wall.

[0034] A stylus pen according to an embodiment of the present invention includes a housing; a core body having one end located outside the housing and the other end located inside the housing, configured to move along its longitudinal direction by an external force acting on the one end; an inductor portion located inside the housing, including a ferrite core having a through-hole through which the core body passes, and a coil wound around the outer surface of the ferrite core; a capacitor portion electrically connected to the inductor portion to form a resonant circuit; and a sealing member configured to block a path through which moisture flows into the stylus pen through the core body opening in the housing and the through-hole in the ferrite core.

[0035] The present invention further includes a fixing bracket fixedly positioned inside the housing and coupled to one end of the ferrite core, wherein the fixing bracket includes a partition wall in contact with the ferrite core, and the sealing member is positioned in the partition wall such that the core body fills the outer casing of a through-hole in the partition wall through which the partition wall penetrates, and the sealing member may be positioned so as to be in close contact with the core body in the portion of the core body that penetrates the through-hole in the partition wall.

[0036] Here, the sealing member may include a cylindrical contact portion having a height in the longitudinal direction of the core body, and may be arranged to be in close contact with the core body at the contact portion.

[0037] Here, the contact portion can maintain a state of close contact with the core body in at least a portion of it as the core body moves in the longitudinal direction.

[0038] A stylus pen according to an embodiment of the present invention includes a housing; a core body having one end located outside the housing and the other end located inside the housing, configured to move along its longitudinal direction by an external force acting on the one end; an inductor portion located inside the housing, having a through hole through which the core body passes, and including a ferrite core and a coil wound around the outer surface of the ferrite core; a capacitor portion electrically connected to the inductor portion to form a resonant circuit; a buffer member located between the inner surface of the housing and the other end of the ferrite core, positioned to cover at least a portion of the other end of the ferrite core; and a sealing member capable of blocking a path through which moisture can flow into the stylus pen through the core body opening in the housing and through the space between the housing and the inductor portion.

[0039] Here, the cushioning member may be positioned so as to be in close contact with the housing and the other end of the ferrite core.

[0040] Here, the other end of the ferrite core has a tapered shape in which the diameter or width decreases towards the end portion, and may include at least one curved surface portion in which the outer surface is curved inward.

[0041] Here, the cushioning member can have an even smaller thickness compared to the case where the other end of the ferrite core does not include the curved portion.

[0042] Here, the sealing member may be positioned to cover the outer surface of the ferrite core and to be in close contact with the inner wall of the housing.

[0043] The present invention further includes a fixing bracket fixedly positioned inside the housing and coupled to one end of the ferrite core, wherein the sealing member is positioned to cover the fixing bracket and may be positioned in close contact with the inner wall of the housing.

[0044] To solve the problems of the present invention, a stylus pen is provided comprising: a housing; a core body having one end located outside the housing and the other end located inside the housing, configured to move along its longitudinal direction by an external force acting on the one end; an inductor portion located inside the housing, having a through hole through which the core body passes, and including a ferrite core and a coil wound around the outer surface of the ferrite core; a capacitor portion electrically connected to the inductor portion to form a resonant circuit; and a buffer member located between the housing and the other end of the ferrite core, positioned to cover at least a portion of the other end of the ferrite core, and including a fourth sealing member at one end, wherein the sealing member is positioned so that its outer casing is in close contact with the inner wall of the housing.

[0045] According to one embodiment of the present invention, the fourth sealing member may be taped or coated on one surface of the cushioning member.

[0046] According to one embodiment of the present invention, the fourth sealing member may be arranged such that its inner casing is in close contact with the core body or the ferrite core.

[0047] According to one embodiment of the present invention, the fourth sealing member may have an inner casing that is separated from the core or ferrite core by a predetermined distance.

[0048] According to one embodiment of the present invention, the present invention may further include a third sealing member which covers at least a portion of the outer surface of the ferrite core and is arranged to be in close contact with the housing.

[0049] According to one embodiment of the present invention, the third sealing member may be arranged in contact with the coil.

[0050] According to one embodiment of the present invention, the present invention may further include a fixing bracket fixedly positioned inside the housing and coupled to one end of the ferrite core, and a first sealing member positioned to cover at least a portion of the outer surface of the fixing bracket and to be in close contact with the housing.

[0051] According to one embodiment of the present invention, the present invention may further include a button portion disposed on the outer surface of the housing, a button bracket fixedly disposed inside the housing and coupled to the button portion, and a packing member coupled to the button bracket and arranged to be in close contact with the button bracket.

[0052] According to one embodiment of the present invention, the present invention includes a substrate bracket fixedly arranged inside the housing and covering the capacitor portion, a clicker button configured to move along its longitudinal direction by an external force acting on one end, a clicker housing with one end connected to the housing and arranged inside the housing to surround the clicker button, a clicker cover connecting the substrate bracket and the clicker housing inside the housing, and a fifth sealing member arranged to surround a predetermined groove formed in the clicker cover near the portion where the clicker cover and the substrate bracket are connected, wherein the fifth sealing member may be arranged to be in close contact with the housing. [Effects of the Invention]

[0053] By using a stylus pen according to an embodiment of the present invention, it is possible to achieve a waterproof function by blocking multiple water ingress paths into the stylus pen.

[0054] Furthermore, the special shape of the sealing component can provide an additional effect of blocking moisture inflow pathways.

[0055] Furthermore, the size of the cushioning material that performs the cushioning and waterproofing functions can be minimized. [Brief explanation of the drawing]

[0056] [Figure 1] Figures 1(a) through (c) are diagrams illustrating one of the requirements of a conventional stylus pen. [Figure 2] Figure 2 is a simplified diagram showing the internal structure of a conventional stylus pen. [Figure 3] Figure 3 is a perspective view of a stylus pen 100 according to one embodiment of the present invention. [Figure 4] Figure 4 is a cross-sectional view of part A of the stylus pen 100 shown in Figure 3. [Figure 5] Figure 5 is a detailed cross-sectional view of the inductor section 120 shown in Figure 4. [Figure 6] Figures 6(a) and 6(b) are diagrams illustrating the internal structure of a stylus pen according to one embodiment of the present invention shown in Figures 4 and 5, and the effects thereof. [Figure 7] Figures 7(a) to 7(c) are diagrams that further illustrate the internal structure of the stylus pen according to one embodiment of the present invention shown in Figures 4 to 5 and the effects thereof. [Figure 8] Figure 8 is a diagram illustrating the increase in the magnitude of the pen signal due to a predetermined height S shown in Figures 7(a) to (c). [Figure 9] Figure 9 is a cross-sectional view of a portion of the stylus pen 100 shown in Figure 3. [Figure 10] Figure 10(a) is a perspective view illustrating the structure of the internal case 110 and cushioning member 115 shown in Figure 9, and Figure 10(b) is a perspective view of the internal case 110 only. [Figure 11] Figure 11 is a perspective view excluding the internal case 110 shown in Figure 10(a). [Figure 12] Figures 12(a) and 12(b) are perspective views of the first fixing member 130 shown in Figures 9 and 11, viewed from various sides. [Figure 13]Figures 13(a) and 13(b) are perspective views of the movable member 170 shown in Figures 9 and 11 from various sides. [Figure 14] Figures 14(a) and 14(b) are perspective views of the second fixing member 190 shown in Figures 9 and 11 from various sides. [Figure 15] Figure 15 is a perspective view of a partial configuration shown in Figures 9 and 11, viewed from one side. [Figure 16] Figures 16(a) and 16(b) are perspective views showing only some of the components shown in Figures 9 and 11. [Figure 17] Figures 17(a) to (c) are diagrams illustrating the operation of the stylus pen 100 shown in Figures 9 to 16. [Figure 18] Figure 18(a) is a diagram illustrating the change in the LC value of the resonant circuit due to the operation shown in Figures 17(a) to (c). Figure 18(b) is a graph showing the frequency characteristics for each operating state shown in Figures 17(a) to (c). [Figure 19] Figures 19(a) to (c) are diagrams illustrating problems that arise during the assembly of the stylus pen 100 shown in Figures 9 to 17 due to assembly deviations of the core body 102. [Figure 20] Figure 20 is a graph showing the change in resonant frequency due to the pressure applied to the core body 102 for each of Figures 19(a) and (c). [Figure 21] Figures 21(a) to (c) are diagrams illustrating problems that arise during the assembly of the stylus pen 100 shown in Figures 9 to 17 due to assembly deviations of the connection terminals 165a and 165b. [Figure 22] Figure 22 is a cross-sectional view of a portion of a stylus pen according to a modified embodiment of the stylus pen 100 shown in Figure 3. [Figure 23] Figures 23(a) and (b) are diagrams illustrating the first elastic member 180' shown in Figure 22. [Figure 24]Figures 24(a) to (c) are diagrams illustrating the operation of the stylus pen shown in Figures 22 to 23. [Figure 25] Figures 25(a) and (b) are diagrams illustrating examples of assembly deviations occurring in the core body 102. [Figure 26] Figure 26 is a graph showing the change in resonant frequency due to the pressure applied to the core body 102, for Figures 25(a) and (b), respectively. [Figure 27] Figure 27 is a perspective view of a modified example of the ferrite core 121 shown in Figures 4 and 5. [Figure 28] Figure 28(a) is an enlarged front view of a portion of the ferrite core 121' shown in Figure 27, and Figure 28(b) is a cross-sectional view of Figure 28(a) along A-A'. [Figure 29] Figure 29 is a cross-sectional view of a stylus pen to which another modification of the ferrite core 121 shown in Figure 4 is applied. [Figure 30] Figure 30 is a cross-sectional view showing only the ferrite core 121'' and coil portion 123 shown in Figure 29. [Figure 31] Figure 31 is a perspective view of the ferrite core 121'' shown in Figures 29 to 30. [Figure 32] Figure 32(a) is an enlarged front view of a portion of the ferrite core 121'' shown in Figure 31, and Figure 32(b) is a cross-sectional view of Figure 31(a) along line B-B'. [Figure 33] Figure 33 is a perspective view of a stylus pen 1000 according to another embodiment of the present invention. [Figure 34] Figure 34 is a cross-sectional view of a portion of the stylus pen 1000 shown in Figure 33. [Figure 35] Figure 35 is a perspective view of the stylus pen 1000 shown in Figure 33, excluding the housing 1010. [Figure 36] Figure 36 is a perspective view of only the fixing bracket 1600 shown in Figure 25. [Figure 37]Figure 37 is a perspective view of the fixing bracket 1600 shown in Figure 36, viewed from a different direction. [Figure 38] Figure 38 is a partial perspective view of Figure 35 from a different direction. [Figure 39] Figure 39 is a perspective view excluding the inductor section 1200 and the fixing bracket 1600 shown in Figure 35. [Figure 40] Figure 40 is a perspective view of Figure 39 from a different direction. [Figure 41] Figure 41 is a cross-sectional view of Figure 39. [Figure 42] Figure 42 is a perspective view of only the elastic member 1800 shown in Figure 39. [Figure 43] Figure 43 is a perspective view of the substrate bracket 1900 and substrate 2100 shown in Figure 39. [Figure 44] Figure 44 is a diagram illustrating the movement of the movable bracket 1300 in conjunction with the movement of the core body 1020 shown in Figures 35 to 43, and the electrical contact and release between the fixed bracket 1600 and the movable bracket 1300. [Figure 45] Figure 45 is a diagrammatic representation of (A) and (B) in Figure 44, respectively. [Figure 46] Figure 46 shows a simplified stylus pen according to another embodiment of the present invention, with equivalent circuit diagrams representing Figures 44(A) and (B), respectively. [Figure 47] Figure 47 is a perspective view of the stylus pen 1000 according to another embodiment of the present invention shown in Figure 33, viewed from the direction of the nib 1020. [Figure 48] Figure 48(A) is a portion of the cross-sectional view of the stylus pen 1000 shown in Figure 47, cut along A-A'. Figure 48(B) is a portion of the cross-sectional view of the stylus pen 1000 shown in Figure 47, cut along B-B'. [Figure 49] Figure 49 is a drawing showing side views A and B and a cross-sectional view of the ferrite core 1210 shown in Figures 47 and 48. [Figure 50a]Figure 50a is a diagram showing the first and second moisture inflow paths through the core opening of the housing in the stylus pen shown in Figure 9. [Figure 50b] Figure 50b is a diagram showing the first and second moisture inflow paths through the core opening of the housing in the stylus pen shown in Figure 34. [Figure 51a] Figure 51a is a drawing showing one embodiment of a sealing member that blocks the first moisture inflow path in the stylus pen shown in Figure 50a. [Figure 51b] Figure 51b is a drawing showing one embodiment of a sealing member that blocks the first moisture inflow path in the stylus pen shown in Figure 50b. [Figure 52a] Figure 52a is a drawing showing another embodiment of the sealing member that blocks the first moisture inflow path in the stylus pen shown in Figure 50a. [Figure 52b] Figure 52b is a drawing showing another embodiment of the sealing member that blocks the first moisture inflow path in the stylus pen shown in Figure 50b. [Figure 53a] Figure 53a is a drawing showing one embodiment of a sealing member that blocks the second moisture inflow path in the stylus pen shown in Figure 50a. [Figure 53b] Figure 53b is a drawing showing one embodiment of a sealing member that blocks the second moisture inflow path in the stylus pen shown in Figure 50b. [Figure 54] Figure 54 is a drawing showing the stylus pens shown in Figures 50a and 50b, respectively, with the addition of a first sealing member and a second sealing member. [Figure 55] Figure 55 is a drawing showing a modified example of the sealing member shown in Figures 53a and 53b. [Figure 56] Figure 56 is a drawing showing yet another embodiment of the sealing member that blocks the first moisture inflow path in the stylus pen shown in Figure 50b. [Figure 57]Figure 57 is a diagram showing one embodiment of a buffer member that blocks the first and second moisture inflow paths in the stylus pen shown in Figure 50b. [Figure 58] Figure 58 is a drawing showing a stylus pen including the sealing member shown in Figure 56 and the cushioning member shown in Figure 57. [Figure 59] Figure 59 is a diagram showing the third moisture inflow path through the button portion of the stylus pen shown in Figure 34. [Figure 60] Figure 60 is a diagram showing a fourth moisture inflow path through the joint between the housing and the rear bracket, as indicated by the stylus pen shown in Figure 34. [Figure 61] Figure 61 is a diagram showing a packing member that blocks the third moisture inflow path in the stylus pen shown in Figure 59. [Figure 62] Figure 62 is a drawing showing one embodiment of a sealing member that blocks the fourth moisture inflow path in the stylus pen shown in Figure 60. [Figure 63] Figure 63 is a diagram showing multiple waterproofing mechanisms provided in the stylus pen shown in Figure 34. [Modes for carrying out the invention]

[0057] The detailed description of the present invention described herein refers to the accompanying drawings illustrating specific embodiments in which the present invention may be carried out. These embodiments are described in sufficient detail to be sufficient for those skilled in the art to carry out the present invention. It should be understood that the various embodiments of the present invention are distinct from one another but do not necessarily have to be mutually exclusive. For example, certain shapes, structures, and characteristics described herein may be embodied in other embodiments in relation to one embodiment, without departing from the spirit and scope of the present invention. It should also be understood that the position or arrangement of individual components within each disclosed embodiment may be modified, without departing from the spirit and scope of the present invention. Therefore, the detailed description described herein is not intended to be taken as restrictive, and the scope of the present invention is limited only by the accompanying claims, along with all equivalent claims, if appropriately described. Similar reference numerals in the drawings refer to the same or similar functions in various aspects.

[0058] Figure 3 is a perspective view of a stylus pen 100 according to one embodiment of the present invention.

[0059] Referring to Figure 3, a stylus pen 100 according to one embodiment of the present invention includes a housing 101 and a nib 102.

[0060] The housing 101 forms the external appearance of the stylus pen 100. The housing 101 has a predetermined space formed inside and has an elongated shape in one direction. The housing 101 may be made up of two or more parts joined together, or it may be formed as a single, integrated part.

[0061] The housing 101 may be made of a non-conductive synthetic resin material.

[0062] The housing 101 may include a first housing 101a and a second housing 101b. The first housing 101a and the second housing 101b can be joined together to form the appearance of the stylus pen 100. Various components are housed inside the first housing 101a and the second housing 101b.

[0063] A button section 109 may be located in the housing 101. The button section 109 may be located on the intermediate outer surface of the second housing 101b. The button section 109 may be for performing a specific operation of the stylus pen 100. For example, it may be a mechanical or contact button for a cancel operation.

[0064] The core 102 includes one end that is located outside the housing 101, and the remaining portion, excluding the aforementioned end, is located inside the housing 101. Here, the end of the core 102 may also be called the pen tip.

[0065] An external force can cause a portion of one end of the core body 102 to move into the housing 101. The greater the external force, the greater the volume of the portion of the core body 102 that enters the housing 101. When the applied external force decreases, the portion of the core body 102 that enters the housing 101 will move out of the housing 101 again due to the mechanical movement of the components inside the housing 101. When the external force is removed, the portion of the core body 102 that enters the housing 101 returns to its original state.

[0066] The internal structure of the housing 101 will be described below with reference to Figures 4 and 5.

[0067] Figure 4 is a cross-sectional view of part A of the stylus pen 100 shown in Figure 3, and Figure 5 is a detailed cross-sectional view of the inductor section 120 shown in Figure 4.

[0068] Referring to Figures 4 and 5, a stylus pen 100 according to one embodiment of the present invention includes a buffer member 115, an inductor section 120, and a capacitor section (not shown) located inside the housing 101.

[0069] The cushioning member 115 is positioned inside the housing 101, between one end of the ferrite core 121 and the inner surface of the housing 101. The cushioning member 115 may be positioned inside the tapered portion 101t of the housing 101. Here, the tapered portion 101t of the housing 101 is the part of both ends of the housing 101 adjacent to one end of the core body 102, and has a shape in which its width and diameter decrease towards the end of one end of the housing 101.

[0070] The buffer member 115 has a conical or polygonal pyramidal shape and has a through hole through which one end of the ferrite core 121 and the body 102a of the core body 102 pass. The inner surface defining the through hole may have a shape corresponding to the outer surface of one end of the ferrite core 121 and the outer surface of the body 102a of the core body 102. Here, the body 102a of the core body 102 refers to the portion of the core body 102, which has an elongated shape in one direction, that is positioned within the through hole of the ferrite core 121.

[0071] The cushioning member 115 may be made of an elastic material such as rubber to act as a buffer between the ferrite core 121 and the housing 101. Such a cushioning member 115 can protect the housing 101, the ferrite core 121, etc., and block external electrical or magnetic influences.

[0072] The cushioning member 115 has a shape that covers one end of the ferrite core 121 or the lower end 121b of the ferrite core 121.

[0073] A virtual tangent line L1, which is in common contact with the tapered portion 101t of the housing 101 and a part of the core body 102 located outside the housing 101 (or the pen tip), forms a predetermined angle θ with the central axis Y of the core body 102. Here, it is preferable that the predetermined angle θ is within 30°. If the predetermined angle θ is within 30°, drawing becomes possible even when the stylus pen according to one embodiment of the present invention is tilted at 60° to the contact surface.

[0074] The inductor section 120 can constitute an LC resonant section with a capacitor section (not shown). The resonant frequency may be set by the inductance (L) value of the inductor section 120 and the capacitance (C) value of the capacitor section (not shown). The resonant frequency may be varied by changing the inductance (L) value of the inductor section 120 or the capacitance (C) value of the capacitor section (not shown).

[0075] The inductor section 120 includes a ferrite core 121 and a coil section 123 wound around the outer surface of the ferrite core 121.

[0076] The coil portion 123 may be wound around the ferrite core 121 in at least one layer.

[0077] The ferrite core 121 may have an overall cylindrical or polygonal cylindrical shape, and a through hole 121h may be formed that penetrates the interior along the longitudinal direction of the ferrite core 121.

[0078] The ferrite core 121 has a through-hole 121h through which the body 102a of the core 102 passes. The body 102a of the core 102 can reciprocate linearly along its longitudinal direction through the through-hole 121h.

[0079] One end of the ferrite core 121 may have a tapered shape in which the diameter or width decreases towards the end. Here, the outer surface of the tapered end may include at least one curved portion 121c that curves inward.

[0080] The ferrite core 121 may include an upper end 121a and a lower end 121b positioned below the upper end 121a. Here, the upper end 121a and the lower end 121b may be integrally formed.

[0081] The upper end portion 121a has a cylindrical, elliptical, or polygonal shape. Here, the diameter and width of the cylinder or polygonal tube may be constant as shown in the drawing. Alternatively, the diameter and width of the cylinder, elliptical, or polygonal tube may not be constant, and may differ from the diameter and width of a portion of the tube.

[0082] The upper end portion 121a has a part of a through hole 121h formed inside, through which the body 102a of the core 102 passes. The coil portion 123 is arranged on the outer surface of the upper end portion 121a.

[0083] The lower end portion 121b has the remainder of the through hole 121h through which the body 102a of the core body 102 passes.

[0084] The lower end portion 121b has a tapered shape, becoming narrower from top to bottom, but at least a portion of the outer surface of the lower end portion 121b has a curved portion 121c that curves inward from the lower end portion 121b. There may be at least one curved portion 121c. The technical effects of a stylus pen according to one embodiment of the present invention, which includes a ferrite core 121 having such a curved portion 121c, will be described below with reference to the drawings.

[0085] Figures 6(a) and 6(b) are diagrams illustrating the internal structure and effects of a stylus pen according to one embodiment of the present invention shown in Figures 4 and 5. Specifically, Figure 6(b) is a cross-sectional view of the stylus pen according to one embodiment of the present invention shown in Figures 4 and 5, and Figure 6(a) is a cross-sectional view when the ferrite core 121 in Figure 6(b) is replaced with the ferrite core 131' shown on the right side of Figure 2.

[0086] Referring to Figures 6(a) and 6(b), the stylus pen according to one embodiment of the present invention shown in Figure 6(b) allows the ferrite core 121 to be positioned further down by a predetermined length S than the ferrite core 131' shown in Figure 6(a).

[0087] With this configuration, when using the stylus pen according to one embodiment of the present invention, the inductor portion 120 including the ferrite core 121 can be brought even closer to the receiver side (not shown) located below the core body 102 of the stylus pen. Therefore, there is an advantage in that the magnitude of the pen signal sensed by the receiver side becomes even larger. This is possible because the shape of the ferrite core 121 of the stylus pen according to one embodiment of the present invention allows for a reduction in the thickness of the buffer member 115 (between the inner and outer surfaces). This will be explained in detail below with reference to Figure 7.

[0088] Figures 7(a) to 7(c) are diagrams that further explain the internal structure of the stylus pen according to one embodiment of the present invention shown in Figures 4 to 5 and the effects thereof. Specifically, Figure 7(a) is the same diagram as Figure 6(a), Figure 7(b) is the same diagram as Figure 6(b), and Figure 7(c) is a diagram in which the ferrite core 121 is placed in the same position as the ferrite core 131' in Figure 7(a).

[0089] Referring to Figure 7(a), the cushioning member 115' has a certain thickness T2 between its inner and outer surfaces. The more the thickness T2 is minimized, the lower the ferrite core 131' can be positioned within the tapered portion 101t of the housing 101. However, due to the structure of the cushioning member 115' and other manufacturing process reasons, there is a limit to the thickness T2.

[0090] Here, assuming that the thickness T2 is the minimum thickness that the cushioning member 115' can have due to the structure of the cushioning member 115' or other manufacturing process reasons, if the conventional ferrite core 131' is positioned at the lowest end within the housing 101, then the result is as shown in Figure 7(a).

[0091] Referring to (c) of FIG. 7, the ferrite core 121 is disposed at the same position as the ferrite core 131' in (a) of FIG. 7. However, since the ferrite core 121 has a curved surface portion 121c, correspondingly, the buffer member 115'' has a structural difference from the buffer member 115' shown in (a) of FIG. 7. Specifically, the inner surface of the buffer member 115'' has a convex curved surface corresponding to the curved surface portion 121c of the ferrite core 121.

[0092] The thickness between the outer surface of the buffer member 115'' and the inner surface formed by a curved surface varies depending on the position. Specifically, the upper and lower ends of the inner surface of the buffer member 115'' have a minimum thickness of T2 from the outer surface, and the middle portion of the inner surface of the buffer member 115'' has a thickness between T2 and T1 (>T2).

[0093] In (c) of FIG. 7, at least a part (upper and lower ends) of the buffer member 115'' satisfies the minimum thickness of T2, and the thickness of the middle portion of the buffer member 115'' has a thickness T1 greater than the minimum thickness of T2. Thus, since the thickness T1 of the middle portion of the buffer member 115'' is thicker than T2, there is an advantage that it is easier to manufacture the buffer member 115'' than the conventional buffer member 115' in (a) of FIG. 7 when manufacturing the buffer member 115''.

[0094] Referring to (b) of FIG. 7, the inner surface of the buffer member 115 is formed by a curved surface due to the curved surface portion 121c of the ferrite core 121. The upper and lower ends of the inner surface of the buffer member 115 have a thickness of T3 (<T2) from the outer surface of the buffer member 115, and the middle portion of the inner surface of the buffer member 115 has a thickness between T3 and T2 from the outer surface of the buffer member 115.

[0095] In Figure 7(b), the minimum thickness T2 cannot be met at the upper and lower ends of the cushioning member 115, but the minimum thickness T2 can be met in the middle section of the cushioning member 115, making it possible to manufacture the cushioning member 115. The cushioning member 115 manufactured in this way has an even thinner minimum thickness than the cushioning members 115' and 115'' shown in Figures 7(a) and (c), so the volume of the cushioning member 115 can be further reduced. Therefore, the cushioning member 115 can be positioned further down from the inside of the tapered portion 101t of the housing 101, and thereby the ferrite core 121 can be positioned by a predetermined height S further down than in Figures 7(a) and 7(c).

[0096] Figure 8 is a diagram illustrating the increase in the magnitude of the pen signal due to a predetermined height S shown in Figures 7(a) to (c).

[0097] Referring to the table shown in Figure 8, it can be confirmed that the magnitude of the pen signal received by the receiver increases as the predetermined height S increases.

[0098] As described above, the stylus pen 100 according to one embodiment of the present invention shown in Figures 4 to 7 has a different configuration from the conventional ferrite core 131' in the shape of the tapered portion of the ferrite core 121 of the inductor portion 120. This allows for a further reduction in the thickness of the buffer member 115, and enables the ferrite core 121 to be positioned closer to the end of the core body 102 inside the housing 101. Therefore, a stronger pen signal can be obtained from the receiver side that receives the pen signal emitted from the stylus pen 100 according to one embodiment of the present invention, thereby improving the sensing sensitivity of the stylus pen on the receiver side.

[0099] On the other hand, the receiver mentioned several times earlier means a module or device that receives pen signals emitted from a stylus pen 100 according to one embodiment of the present invention. The receiver may be a general digitizer or a display panel. The display panel may have a loop pattern of at least one conductive material. The loop pattern may be coupled to a touch sensor or coupled to the display panel separately from the touch sensor.

[0100] In the following, the specific internal structure of a stylus pen 100 according to one embodiment of the present invention, to which the ferrite core 121 and cushioning member 115 shown in Figures 4 to 7 are applied, will be described with reference to the drawings.

[0101] Figure 9 is a cross-sectional view of a part of the stylus pen 100 according to one embodiment of the present invention shown in Figure 3; Figure 10(a) is a perspective view illustrating the structure of the internal case 110 and buffer member 115 shown in Figure 9; Figure 10(b) is a perspective view of only the internal case 110; Figure 11 is a perspective view excluding the internal case 110 shown in Figure 10(a); and Figures 12(a) and (b) show the first fixing member 13 shown in Figures 9 and 11. Figure 13(a) and (b) are perspective views of the movable member 170 shown in Figures 9 and 11 from various sides, Figure 14(a) and (b) are perspective views of the second fixing member 190 shown in Figures 9 and 11 from various sides, Figure 15 is a perspective view of a part of the configuration shown in Figures 9 and 11 from one side, and Figure 16(a) and (b) are perspective views of only a part of the configuration shown in Figures 9 and 11.

[0102] Referring to Figure 9, the stylus pen 100 includes at least two of the following: an internal case 110, a buffer member 115, an inductor section 120, a capacitor section (not shown), a first fixing member 130, a magnetic material 140, a cover member 150, a ring terminal 161, contact terminals 165a, 165b, a movable member 170, a first elastic member 180, a second elastic member 185, an elastic body 155, a second fixing member 190, and a substrate 210.

[0103] The internal case 110 is made of a non-conductive material and is placed inside the housing 101. Specifically, the internal case 110 can be placed inside the first housing 101a of the housing 101. The internal case 110 may have a shape that surrounds the inductor section 120, the first fixing member 130, the ferrite chip 140, the cover member 150, the ring terminal 161, the contact terminals 165a, 165b, the movable member 170, the first elastic member 180, the second elastic member 185, the elastic body 155, and the second fixing member 190. The internal case 110 can serve to protect the various components placed inside from physical and / or electrical shocks.

[0104] Referring to Figures 9 and 10(a) and (b), the internal case 110 may have a first opening 111 in which the first projection 131 of the first fixing member 130 and the first projection (192) of the second fixing member 190 are positioned. The first opening 111 may have a base groove 111b that extends in the longitudinal direction of the stylus pen 100, and a number of extension grooves 111e that are connected to the base groove 111b and extend in a direction perpendicular to the longitudinal direction of the base groove 111b. The number of extension grooves 111e may be formed at positions corresponding to the number of first projections 131 and 192. As an example, the first opening 111 may have an "E" shape.

[0105] The internal case 110 can be rotated counterclockwise or clockwise around the core body 102 as the axis of rotation, allowing the numerous first protrusions 131, 192 to be positioned from the numerous extension grooves 111e to the base groove 111b, or from the base groove 111b to the numerous extension grooves 111e. In particular, by positioning the numerous first protrusions 131, 192 from the base groove 111b to the numerous extension grooves 111e, the positions of the first fixing member 130 and the second fixing member 190 can be fixed inside the internal case 110. On the other hand, since the movable member 170 is not directly connected to the internal case 110, it can move in conjunction with the linear reciprocating motion of the core body 102 caused by external forces between the first fixing member 130 and the second fixing member 190.

[0106] The internal case 110 may have a second opening 113 in which extension coils 125a and 125b are positioned and connection terminals 165a and 165b are exposed. The second opening 113 provides space for the extension coils 125a and 125b and can protect them from external impacts. In addition, the mounting position of the connection terminals 165a and 165b can be easily confirmed through the second opening 113.

[0107] The buffer member 115 may be positioned between the inductor 120 and the housing 101, and between the core 102 and the internal case 110. The buffer member 115 has a through hole through which the core 102 passes. Such a buffer member 115 can guide the position of the core 102, stably fix the inductor portion 120, and block external electrical or magnetic influences on the inductor portion 120. Such a buffer member 115 may be configured separately from the internal case 110, but is not limited to this, and the buffer member 115 may be configured integrally with the internal case 110.

[0108] Referring to Figures 9 and 11, the buffer member 115, inductor section 120, first fixing member 130, movable member 170, and second fixing member 190 may be arranged sequentially along the longitudinal direction of the stylus pen 100 (hereinafter referred to as the "longitudinal direction") from one end of the core body 102. That is, the inductor section 120 may be arranged on the buffer member 115 along the longitudinal direction, the first fixing member 130 on the inductor section 120, the movable member 170 on the first fixing member 130, and the second fixing member 190 on the movable member 170.

[0109] The inductor section 120 includes a ferrite core 121 and a coil section 123 wound around the ferrite core 121. The ferrite core 121 has a through-hole through which a core body 102 passes. The core body 102 can reciprocate linearly along the longitudinal direction through the through-hole. The coil section 123 may be wound around the ferrite core 121 in at least one layer. Extension coils 125a and 125b may be connected to both ends of the coil section 123, respectively. The extension coils 125a and 125b extend along the longitudinal direction and may be connected to coil electrodes 213a and 213b, respectively, which are arranged on the substrate 210.

[0110] The inductor section 120 is fixedly installed inside the housing 101. The inductor section 120 may be fixed between the first fixing member 130 and the buffer member 115 in the longitudinal direction. The inductor section 120 may be fixed by the internal case 110 in the direction perpendicular to the longitudinal direction (hereinafter referred to as the "vertical direction").

[0111] The inductor section 120 may be fixed and positioned on one side of the first fixing member 130. Here, a portion of the inductor section 120 may be positioned in the second cavity 133b of the first fixing member 130.

[0112] The inductor section 120 can be electrically connected to a capacitor section (not shown) mounted on the substrate 210 to form a resonant circuit. The resonant frequency may be set by the inductance (L) value of the inductor section 120 and the capacitance (C) value of the capacitor section (not shown). Since the inductance (L) value of the inductor section 120 changes with the movement of the magnetic material 140, the resonant frequency may be variable.

[0113] The capacitor section (not shown) is placed on the substrate 210. It has a preset capacitance (C) value. The capacitor section (not shown) may include two or more capacitors. At least one of the two or more capacitors may be configured in a circuit where it is always electrically connected to the inductor section 120 as a basic capacitor.

[0114] The capacitor section (not shown) includes a jumping capacitor 215. The jumping capacitor 215 is mounted on the substrate 210 and may be configured to be electrically connected to connection terminals 165a and 165b. For example, the jumping capacitor 215 may be electrically connected to connection pads 211a and 211b located on the substrate 210 via conductive patterns 212a and 212b. The jumping capacitor 215 may be electrically connected to and disconnected from the basic capacitor as the core body 102 moves. When no external force is applied to the core body 102, the ring terminal 161 is in contact with the connection terminals 165a and 165b, and the jumping capacitor 215 is electrically connected to the basic capacitor. On the other hand, if an external force is applied to the core body 102 and the movable member 170, which is linked to the core body 102, moves toward the first elastic member 180, the ring terminal 161 will separate from the connection terminals 165a and 165b. At this time, the jumping capacitor 215 can be electrically isolated from the basic capacitor.

[0115] Referring to Figures 9, 11, and 12(a) and (b), the first fixing member 130 is positioned inside the internal case 110. The first fixing member 130 has an overall cylindrical shape. The first fixing member 130 has a first cavity 133a and a second cavity 133b. The magnetic material 140 shown in Figure 9 is positioned in the first cavity 133a, and one end of the ferrite core 121 of the inductor section 120 shown in Figure 9 is positioned in the second cavity 133b. A partition wall 132 is positioned between the first cavity 133a and the second cavity 133b, and the partition wall 132 has a through hole 132h through which the core body 102 passes.

[0116] An inductor section 120 is positioned on one side of the first fixing member 130, and a second fixing member 190 is positioned at a predetermined distance from the other side of the first fixing member 130.

[0117] The outer surface of the first fixing member 130 may have a number of the first protrusions 131 described above.

[0118] The outer surface of the first fixing member 130 may have a number of first grooves 135 in which the numerous extensions 171 of the movable member 170 are each positioned. Furthermore, the outer surface of the first fixing member 130 may have a second groove 137 formed along the longitudinal direction, which maintains a constant distance from the extension coils 125a and 125b shown in Figure 11.

[0119] Referring to Figures 9, 11, and 13(a) and (b), the movable member 170 is positioned between the first fixed member 130 and the second fixed member 190. The movable member 170 can reciprocate linearly between the first fixed member 130 and the second fixed member 190 in conjunction with the longitudinal movement of the core body 102.

[0120] The movable member 170 is located inside the internal case 110. The movable member 170 has an overall cylindrical shape. The movable member 170 has a first cavity 173a and a second cavity 173b. A portion of the first elastic member 180 shown in Figure 9 is located in the first cavity 173a, and a portion of the cover portion 150 shown in Figure 9 is located in the second cavity 173b. A partition wall 172 is located between the first cavity 173a and the second cavity 173b, and the partition wall 172 is located between the cover portion 150 and the first elastic member 180.

[0121] A number of extensions 171 are arranged on the outer surface of the movable member 170, which are positioned in the number of first grooves 135 of the first fixed member 130. The number of extensions 171 have a shape that extends along the longitudinal direction and can move along the first grooves 135 of the first fixed member 130.

[0122] A number of second grooves 175 may be formed on the outer surface of the movable member 170, each of which is positioned a second extension 193 of the second fixing member shown in Figure 14. As the movable member 170 moves linearly in the longitudinal direction, the second grooves 175 also move in conjunction, so the position of the second extension 193 of the second fixing member 190 positioned within the second grooves 175 can change.

[0123] The second groove 175 of the movable member 170 may have a shape corresponding to the second extension 193 of the second fixing member 190. The second groove 175 may have a shape that prevents the second extension 193 of the second fixing member 190 from completely detaching from the second groove 175 when the movable member 170 moves away from the second fixing member 190. For this purpose, the second groove 175 may have a shape in which the width of the second groove 175 narrows as it moves toward the second fixing member 190, and the second extension 193 of the second fixing member 190 may have a shape that protrudes in the width direction of the second groove 175.

[0124] A first groove 177 may be formed on the outer surface of the movable member 170. The first groove 177 is formed to be long along the longitudinal direction, and connection terminals 165a and 165b may be arranged in the first groove 177, as shown in Figure 16(b). The position of the connection terminals 165a and 165b can be fixed and guided by such a first groove 177. In addition, the first extension 192 of the second fixing member 190 may be arranged in the first groove 177 together with the connection terminals 165a and 165b.

[0125] The movable member 170 is positioned between the first fixed member 130 and the second fixed member 190. The extension 171 of the movable member 170 is positioned in the first groove 135 of the first fixed member 130, and the first and second extensions 193 and 199 of the second fixed member 190 are positioned in the first and second grooves 175 and 177 of the movable member 170. This has the advantage that the movable member 170 will not detach from the outside even when it is frequently moved.

[0126] The movable member 170 includes one surface 179 on which the first cavity 173a is located, and the ring terminals 161 shown in Figures 9 and 15 may be located on the surface 179. The shape of the surface 179 can correspond to the shape of the ring terminals 161. The ring terminals 161 located on the surface 179 may be guided by the inner surfaces of one or more extensions 171 located around the periphery.

[0127] Referring to Figures 9, 11, and 14, the second fixing member 190 is fixed and positioned inside the housing 101. At least a portion of the second fixing member 190 is fixed and positioned inside the inner case 110.

[0128] The second fixing member 190 includes a cylindrical base portion 191. One surface 191a of the base portion 191 has a cavity 195 in which a part of the first elastic member 180 shown in Figure 9 is arranged. The second elastic member 185 shown in Figure 9 is arranged on the one surface 191a of the base portion 191.

[0129] The second fixing member 190 includes a first extension 199 and a second extension 193 extending from one surface 191a of the base portion 191 toward the movable member 170. The first extension 199 and the second extension 193 may be arranged in multiple quantities on one surface 191a of the base portion 191. Specifically, two first extensions 199 may be arranged facing each other, and two second extensions 193 may be arranged facing each other. The multiple first and second extensions 191, 199 can guide the outer surface of the second elastic member 185 shown in Figure 9 from all four sides. Thus, the position of the second elastic member 185 can be fixed by the multiple first and second extensions 191, 199.

[0130] The inner surface of the first extension 199 guides the outer surface of the second elastic member 185, and the outer surface of the first extension 199 can support a portion of the connection terminals 165a and 165b shown in Figures 9 and 11.

[0131] The second extension 193 may have a predetermined shape that prevents it from detaching from the second groove 175 of the movable member 170 after it has been coupled to it. For example, the second extension 193 may have a shape in which at least a portion protrudes so that it cannot detach from the second groove 175.

[0132] The second fixing member 190 may have a groove 194 formed on the outer surface of the base portion 191. The bottom surface of the groove 194 may be connected to the outer surface of the first extension portion 199 without any additional step. Parts of the connection terminals 165a and 165b shown in Figures 9 and 11 may be placed in the groove 194.

[0133] The second fixing member 190 may include an anchoring portion 196 extending along the longitudinal direction from the other side (not shown) of the base portion 191. The anchoring portion 196 may have a cavity 197 in which the substrate 210 shown in Figures 9 and 11 is placed.

[0134] The second fixing member 190 may have an opening 198 for connecting the connection terminals 165a and 165b shown in Figures 9 and 11 to the substrate 210 located in the cavity 197. The other ends of the connection terminals 165a and 165b may be positioned in the opening 198 and connected to the connection pads 211a and 211b of the substrate 210.

[0135] Referring to Figures 9, 11, 15, and 16(a) and (b), the core body 102 is formed to extend along the longitudinal direction to a predetermined length, and one end may have a pointed shape. Here, the one end is exposed to the outside of the housing 101.

[0136] The core body 102 includes a stepped portion 102T positioned in a part of the intermediate portion between one end and the other end. The thicknesses of the one end and the other end of the intermediate portion may differ from each other with respect to the stepped portion 102T. The first thickness D1 of the one end of the intermediate portion with respect to the stepped portion 102T may be formed to be even thicker than the second thickness D2 of the other end of the intermediate portion. With this configuration of the stepped portion 102T, when the core body 102 moves in the longitudinal direction due to an external force, the magnetic body 140 can be moved together with it. That is, when the core body 102 moves, the stepped portion 102T pushes one surface of the magnetic body 140, causing the magnetic body 140 to move in the longitudinal direction. As the magnetic body 140 moves along the longitudinal direction, the separation distance between the inductor portion 120 and the magnetic body 140 changes. The change in distance changes the inductance (L) value of the inductor portion 120, and the change in inductance value changes the resonant frequency of the stylus pen 100. A stylus pen sensing device that interacts with the stylus pen 100 can sense changes in the resonant frequency and detect the writing pressure (pressure) applied to the nib 102.

[0137] The magnetic material 140 is placed inside the first cavity 133a of the first fixing member 130 shown in Figure 12 and has a cylindrical shape. The magnetic material 140 has a through hole through which a part of the core body 102 passes. The diameter of the through hole may be the same as or larger than the second thickness D2 and smaller than the first thickness D1.

[0138] The magnetic material 140 may be a ferrite chip.

[0139] The magnetic material 140 can move linearly back and forth along the longitudinal direction in conjunction with the core body 102. As the magnetic material 140 moves in conjunction with the core body 102, the inductance (L) value of the inductor section 120 may change.

[0140] A cover portion 161 is positioned at the other end of the core body 102. The cover portion 161 may have a shape that covers the other end of the core body 102. For example, the cover portion 161 may have a cylindrical shape with different thicknesses at the top and bottom.

[0141] An elastic body 155 may be placed between the cover portion 161 and the magnetic material 140. The elastic body 155 may be a spring. One end of the elastic body 155 may be sandwiched in a part of the cover portion 161, and the other end of the elastic body 155 may be in contact with the magnetic material 140.

[0142] The elastic body 155 may be used to correct deviations in the magnetic body 140. For example, if the length (or height) of the magnetic body 140 is 0.1 mm smaller than the specified length, the elastic body 155 will cause the magnetic body 140 to be in close contact with the partition wall 132 of the first fixing member 130.

[0143] The ring terminal 161 is a hollow circle and electrically connects the two connection terminals 165a and 165b. Here, the shape of the ring terminal 161 is not limited to a circle, but may also be polygonal.

[0144] The ring terminal 161 is positioned on one surface of the movable member 170 and moves in conjunction with the movable member 170. That is, it moves together with the linear reciprocating motion of the movable member 170 in the longitudinal direction.

[0145] Each connection terminal 165a, 165b includes one side that contacts or separates from the ring terminal 161 and the other side that is connected to the substrate 210. The one side may contact or separate from the ring terminal 161 as the ring terminal 161 moves in conjunction with the movable member 170. The other side is directly connected to the connection pads 211a, 211b of the substrate 210 shown in Figure 9 by soldering or the like.

[0146] The connecting terminals 165a and 165b include a base portion positioned between the one side and the other side. The base portion may have a shape that extends in the longitudinal direction. The base portion may be positioned in the first groove 177 of the movable member 170 shown in Figure 13 and in the groove 194 of the second fixing member 190 shown in Figure 14, and guided by the first extension 199 of the second fixing member 190.

[0147] The first elastic member 180 is placed inside the second fixing member 190. The first elastic member 180 may have an elongated cylindrical shape in the longitudinal direction. The first elastic member 180 may be made of rubber.

[0148] The first elastic member 180 may have one end positioned in the cavity 195 of the second fixed member 190 shown in Figure 14, and the other end positioned in the first cavity 173a of the movable member 170 shown in Figure 13.

[0149] The second elastic member 185 is placed inside the second fixing member 190. The second elastic member 185 may have a flat cylindrical shape. The second elastic member 185 may be made of rubber. The second elastic member 185 may be made of a rubber material that is relatively harder than the first elastic member 180. Therefore, the second elastic member 185 may be made of hard rubber, and the first elastic member 180 may be made of soft rubber.

[0150] On the other hand, the second elastic member 185 may be a spring. The second elastic member 185 may be a spring configured to respond to a force that is relatively heavier than that of the first elastic member 180.

[0151] The thickness of the second elastic member 185 in the longitudinal direction is thinner than that of the first elastic member 180, and the diameter in the vertical direction is wider than that of the first elastic member 180.

[0152] The second elastic member 185 is positioned to surround the intermediate portion of the first elastic member 180. Therefore, the second elastic member 185 has a through hole through which the first elastic member 180 passes.

[0153] The second elastic member 185 may have a groove 185g that is sandwiched in a portion of the first extension 199 of the second fixing member 190, as shown in Figure 16(b). Through this, the second elastic member 185 can be stably fixed to the second fixing member 190.

[0154] The operation of the stylus pen 100 according to one embodiment shown in Figures 9 to 16 will be described below with reference to Figure 17.

[0155] Figures 17(a) to 17(c) are diagrams illustrating the operation of the stylus pen 100 shown in Figures 9 to 16. Specifically, Figure 17(a) is a diagram showing the hover state H of the stylus pen 100, Figure 17(b) is a diagram showing the contact state C of the stylus pen 100, and Figure 17(c) is a diagram showing the writing pressure state P of the stylus pen 100.

[0156] Referring to Figure 17(a), in the hover state H, no external force acts on the core body 102, and therefore there is no change in the internal structure. In particular, the ring terminal 161 and the connecting terminals 165a and 165b remain in contact with each other.

[0157] Referring to Figure 17(b), in contact state C, a predetermined pressure is applied to one end of the core body 102. The applied pressure causes the core body 102 to move inward towards the housing 101. As the core body 102 moves, the cover portion 150 pushes the moving member 170 toward the first elastic member 180, causing the ring terminal 161 to separate from the connection terminals 165a and 165b. Therefore, the jumping capacitor 215 shown in Figure 9 is electrically disconnected from the basic capacitor, and the overall capacitance of the capacitor portion (not shown) decreases. Here, since the magnetic material 140 does not move, the inductance value of the inductor portion 120 remains unchanged. As the overall capacitance value of the capacitor portion (not shown) decreases, the resonant frequency changes.

[0158] Referring to Figure 17(c), in pen pressure state P, a greater pressure is applied to one end of the core body 102 than in contact state C. This greater pressure causes the core body 102 to move further inward towards the housing 101, thereby pressing the magnetic body 140 against the stepped portion 102T of the core body 102. As the magnetic body 140 is pressed, the elastic body 155 positioned between the cover portion 150 and the magnetic body 140 is compressed, and the movement of the moving member 170 compresses the first elastic member 180 and the second elastic member 185. At this point, as the magnetic body 140 moves away from the inductor portion 120, the inductance (L) value of the inductor portion 120 gradually decreases. At this point, the capacitance of the capacitor portion (not shown) is maintained in the same way as in contact state C. As the inductance value of the inductor portion 120 decreases, the resonant frequency changes.

[0159] Figure 18(a) shows the change in the LC value of the resonant circuit section due to the operation of Figures 17(a) to (c), with the Th section representing the hover state of Figure 17(a), the Tc point representing the contact state of Figure 17(b), and the Tp section representing the pen pressure state of Figure 17(c). Figure 18(b) is a graph showing the frequency characteristics for each operating state of Figures 17(a) to (c).

[0160] Referring to Figure 18(a), the LC value of the resonant circuit, which consists of a capacitor (not shown) and an inductor 120, remains constant until the stylus pen 100's core 102 contacts the touch surface (Th), and then decreases sharply immediately after the core 102 contacts the touch surface (Tc). Furthermore, in the section (Tp) where pressure is applied to the stylus pen 100 after it has contacted the touch surface, the LC value of the resonant circuit decreases further in accordance with the pressure. That is, in this section (Tp), the LC value of the resonant circuit may decrease gradually as the pressure applied to the stylus pen 100 increases. Referring to Figure 18(a), the LC value of the resonant circuit shows the state of hover > contact > pressure. Also, immediately after the core 102 contacts the touch surface, the change in the LC value may be larger as the pressure gradually increases thereafter.

[0161] If the inductance value of the inductor section 120 and the capacitance value of the capacitor section (not shown) are changed, the resonant frequency and Q value of the resonant circuit section can be changed. The resonant frequency of the resonant circuit section increases as the inductance of the resonant circuit section decreases, and the Q value decreases as the inductance decreases. Therefore, as shown in Figure 18(b), the frequency characteristics of the resonant signal Vpen output from the resonant circuit section may change as the distance traveled by the core body 102 increases, i.e., as the pen pressure increases, the resonant frequency increases (hover state < contact state < pen pressure state) and the Q value decreases (hover state > contact state > pen pressure state).

[0162] If the resonant frequency of the resonant circuit is changed, the phase of the electromagnetic signal output from the stylus pen 100 is changed. This phase change can be used to calculate the change in the LC value of the resonant circuit in a stylus pen sensing device that interacts with the stylus pen 100. Based on this, it is possible to detect whether or not the stylus pen 100 is in contact with the stylus pen sensing device and the pressure applied.

[0163] As described above, the stylus pen 100 according to one embodiment shown in Figures 9 to 16 can detect pen pressure with a stylus pen sensing device by changing at least one or both of the inductance and capacitance values ​​of the resonant circuit. It also has the advantage of being able to sense pen pressure precisely.

[0164] On the other hand, the stylus pen according to one embodiment shown in Figures 9 to 16 may experience assembly deviations during the assembly process. These assembly deviations can cause certain problems, which will be explained in detail below with reference to Figures 19 to 21.

[0165] Figures 19(a) to (c) are diagrams illustrating problems that arise due to assembly deviations of the core body 102 during the assembly of the stylus pen 100 shown in Figures 9 to 17.

[0166] Specifically, Figure 19(a) shows the case where the core body 102 is installed as pre-designed without any assembly deviation, while Figures 19(b) and 19(c) show cases where the core body 102 is not installed in the pre-designed position due to assembly deviations that occurred during the assembly process.

[0167] In Figure 19(a), the stepped portion 102T of the core body 102 is located at the through hole 132h formed in the partition wall 132 of the first fixing member 130. This is an example of proper assembly without deviation in the position of the stepped portion 102T. On the other hand, in Figures 19(b) and (c), due to assembly deviation, the stepped portion 102T is positioned at a location other than the through hole 132h in the partition wall 132. Specifically, in Figure 19(b), the stepped portion 102T is located in the second cavity 133b of the first fixing member 130 where the inductor portion 120 is located (see Figure 12(b)), and in Figure 19(c), the stepped portion 102T is located in the first cavity 133a of the first fixing member 130 where the magnetic material 140 is located (see Figure 12(a)).

[0168] In the case of Figure 19(b), where an assembly deviation occurs, even if pressure is continuously applied to the core body 102 immediately after the contact state in Figure 17(b), the inductance value of the inductor body 120 does not change immediately because the distance between the inductor body 120 and the magnetic material 140 remains constant. On the other hand, in the case of Figure 19(c), the magnetic material 140 moves due to the core body 102 between the hover state in Figure 17(a) and the contact state in Figure 17(b), and the inductance value of the inductor body 120 may change.

[0169] For each of Figures 19(a) to (c), the change in the resonant frequency due to the pressure applied to the core 102 will be explained with reference to Figure 20.

[0170] In the graph in Figure 20, line (1), which has no assembly deviation, corresponds to (a) in Figure 19; line (2), which has assembly deviation, corresponds to (c) in Figure 19; and line (3), which has assembly deviation, corresponds to (b) in Figure 19.

[0171] Referring to Figure 20, in the case of line (3), the resonant frequency does not change even if the pressure increases immediately after the core body 102 makes contact. The stylus pen sensing device interacting with the stylus pen 100 cannot sense the pressure acting on the core body 102. In the case of line (2), the resonant frequency changes even when the core body 102 is in a hover state, so the stylus pen sensing device can recognize the core body 102 in a contact state that is not in a hover state. Thus, due to the assembly deviations in Figures 19(b) and (c), the stylus pen sensing device may have difficulty accurately sensing the stylus pen 100.

[0172] Figures 21(a) to (c) are diagrams illustrating problems that arise during the assembly of the stylus pen 100 shown in Figures 9 to 17 due to assembly deviations of the connection terminals 165a and 165b.

[0173] Specifically, Figure 21(a) shows the case where the connectors 165a and 165b are installed as designed in advance without any assembly deviation, while Figures 21(b) and 21(c) show the case where the connectors 165a and 165b are not installed in the pre-designed positions due to assembly deviations that occurred during the assembly process.

[0174] In Figure 21(a), one end 165a1 of the connector 165a is positioned in contact with the ring terminal 161, and the other end 165a2 is positioned in contact with the connection pad 211a of the substrate 210. This is an example of the connector 165a being properly assembled without any deviation in its position. On the other hand, in Figures 21(b) and (c), the connector 165a is positioned in a location other than the pre-designed position due to assembly deviations. Specifically, in Figure 21(b), the connector 165a is offset by a predetermined distance toward the substrate 210, and one end 165a1 presses against the ring terminal 161 with considerable force. In Figure 21(c), the connector 165a is offset by a predetermined distance toward the first fixing member 130, and one end 165a1 is separated from the ring terminal 161 by a predetermined distance.

[0175] In the case of Figure 21(b), where an assembly deviation occurs, the connection terminal 165a and the ring terminal 161 are assembled while being pressed against each other, which increases the pressure required to recognize the contact state in Figure 17(b). On the other hand, in the case of Figure 21(c), the ring terminal 161 and the connection terminal 165a are separated from the hover state in Figure 17(a), so even if pressure is applied to the core body 102, it is impossible for the stylus pen sensing device to sense the contact state in Figure 17(b).

[0176] Figures 22 to 26 below illustrate a stylus pen according to another embodiment, in which the assembly deviation described in Figures 19 to 21 does not significantly affect performance, and in which the internal components can be reduced, thereby saving manufacturing costs.

[0177] The stylus pen shown in Figure 22 differs from the stylus pen 100 shown in Figures 9 to 17 in that 1) the first elastic member 180' is made of a spring that is not made of rubber, and 2) the ring terminal 161, connection terminals 165a, 165b, jumping capacitor 215, and the configuration for their electrical connection shown in Figures 9 to 17 of the stylus pen 100 are omitted. The remaining configurations are the same as those of the stylus pen 100 shown in Figures 9 to 17, so instead of explaining them in detail as previously explained, the following will focus on explaining the differences in configurations.

[0178] Referring to Figure 22, the first elastic member 180' is composed of a spring. The first elastic member 180' can be positioned to begin compressing from a low pressure (e.g., around 10 gf), have a low compressive strength, and compress quickly even with a slight increase in pressure.

[0179] Figures 23(a) and 23(b) are diagrams illustrating the first elastic member 180' shown in Figure 22. Figure 23(a) shows the situation when no force is acting on the first elastic member 180', and Figure 23(b) shows that the first elastic member 180' is positioned between the movable member 170 and the second fixed member 190 shown in Figure 22.

[0180] The first elastic member 180' can be positioned between the movable member 170 and the second fixed member 190, as shown in Figure 23(b), in a partially compressed (or incompletely compressed) state. In this configuration, the first elastic member 180' will not be compressed unless a force greater than the force (or repulsive force) applied by the movable member 170 and the second fixed member 190 is applied. Here, the force (or repulsive force) may be, for example, around 10 (gf). On the other hand, the second elastic member 190 will be compressed if a force greater than the force that caused the compression is applied via the movable member 170.

[0181] The formula below, <Equation 1>, shows the force (or repulsive force, F) of the partially compressed first elastic member 180'.

[0182] [Mathematical formula] In <Equation 1> above TIFF0007856348000001.tif25158, G is the shear modulus of the spring, Na is the number of effective windings of the spring, D is the diameter of the spring, d is the diameter of the wire, and x is the length of the spring when compressed (in the - direction).

[0183] On the other hand, the first elastic member 180' may be positioned between the movable member 170 and the second fixed member 190 even when it is not compressed. Therefore, stylus pens according to other embodiments of the present invention are not limited to those in which a portion of the first elastic member 180' is positioned between the movable member 170 and the second fixed member 190 in a compressed state.

[0184] The first elastic member 180' may be configured to react with a weight that is relatively larger than that of the elastic body 155.

[0185] The operation of the stylus pen according to other embodiments shown in Figures 22 to 23 will be described below with reference to Figure 24.

[0186] Figures 24(a) to 24(c) are diagrams illustrating the operation of the stylus pen shown in Figures 22 to 23. Specifically, Figure 24(a) is a diagram showing the hover state H of the stylus pen, Figure 24(b) is a diagram showing the contact state C of the stylus pen, and Figure 24(c) is a diagram showing the pressure state P of the stylus pen.

[0187] Referring to Figure 24(a), in the hover state H, no external force acts on the core body 102, and therefore there is no change in the internal structure.

[0188] Referring to Figure 24(b), in contact state C, a predetermined pressure is applied to one end of the core body 102. The applied pressure causes the core body 102 to move inward towards the housing 101. As the core body 102 moves, the cover portion 150 pushes the moving member 170 toward the first elastic member 180', pushing the moving member 170 up to the second elastic member 185. In this situation, the first elastic member 180' is compressed by the amount that the moving member 170 is pushed. As the core body 102 moves, the stepped portion 102T of the core body 102 pushes the magnetic material 140 toward the first elastic member 180'. The magnetic material 140 is pushed, changing the distance between the inductor portion 120 and the magnetic material 140. This change in distance changes the inductance value of the inductor portion 120, and ultimately changes the resonant frequency.

[0189] Referring to Figure 24(c), under pen pressure state P, a greater pressure is applied to one end of the core body 102 than under contact state C. This greater pressure causes the core body 102 to move further inward towards the housing 101, thereby moving the magnetic material 140 further away from the inductor portion 120. As the magnetic material 140 is pushed, the elastic body 155 positioned between the cover portion 150 and the magnetic material 140 is compressed, and the movement of the moving member 170 further compresses the first elastic member 180', which in turn compresses the second elastic member 185. As the magnetic material 140 moves further away from the inductor portion 120, the inductance (L) value of the inductor portion 120 gradually decreases. As the inductance value of the inductor portion 120 decreases, the resonant frequency changes.

[0190] Figures 25(a) and (b) are diagrams illustrating examples of assembly deviations occurring in the core body 102, and Figure 26 is a graph showing the change in resonant frequency due to the pressure applied to the core body 102 for each of Figures 25(a) and (b).

[0191] Figure 25(a) shows that, due to assembly deviations during the assembly process, the stepped portion 102T of the core body 102 is offset toward the magnetic material 140 and positioned almost flush with one surface of the magnetic material 140, while Figure 25(b) shows that, due to assembly deviations, the stepped portion 102T of the core body 102 is offset toward the inductor portion 120.

[0192] In the graph of Figure 26, line (1) corresponds to Figure 22, representing the case where no assembly deviation occurs; line (2) corresponds to Figure 25(a); and line (3) corresponds to Figure 25(b).

[0193] Referring to Figure 26, a stylus pen according to another embodiment of the present invention, including the first elastic member 180', exhibits less change in performance even if there is some assembly deviation in the core body 102, compared to when there is no assembly deviation. Therefore, it has further advantages in mass production compared to the stylus pen 100 shown in Figure 9.

[0194] Furthermore, the stylus pens shown in Figures 22 to 24 do not use components such as the jumping capacitor 215, ring terminal 161, and connection terminals 165a, 165b found in the stylus pen 100 shown in Figures 9 to 16. This allows for a simpler internal structure and reduces manufacturing costs. In addition, to accommodate the connection terminals 165a, 165b, parts of the groove 194 in the second fixing member 190 shown in Figure 14 and the first groove 177 in the movable member 170 shown in Figure 13 are unnecessary.

[0195] On the other hand, although not shown in separate drawings, a stylus pen according to yet another embodiment of the present invention may be one in which the first elastic member 180 in the stylus pen 100 shown in Figure 9 is replaced with the first elastic member 180' shown in Figures 22 and 23.

[0196] On the other hand, although not shown in separate drawings, the ferrite core 121 and cushioning member 115 shown in Figure 4 can be applied not only to the stylus pens mentioned in Figures 9 to 26, but also to other conventional stylus pens.

[0197] Figure 27 is a perspective view of a modified ferrite core 121 shown in Figures 4 and 5, Figure 28(a) is an enlarged front view of a portion of the ferrite core 121' shown in Figure 27, and Figure 28(b) is a cross-sectional view of Figure 28(a) along A-A'.

[0198] Referring to Figures 27 to 28, the ferrite core 121' has a cylindrical shape. A flat portion 121d may be provided on at least a portion of the outer surface of the ferrite core 121'. Another flat portion corresponding to the flat portion 121d may also be provided on the other portion of the outer surface of the ferrite core 121'. The flat portion 121d allows the ferrite core 121' to be stably positioned inside the housing.

[0199] The ferrite core 121' has a cylindrical upper end 121a' and a lower end 121b', and the lower end 121b' may have at least two curved portions 121c'. The curved portions 121c' may be portions that start from the outer surface of the lower end 121b' and curve to a portion adjacent to the through hole 121h of the ferrite core 121'. Such curved portions 121c' may be arranged on opposite sides of the lower end 121b' with respect to the through hole 121h.

[0200] The curved portion 121c of the ferrite core 121 shown in Figures 4 and 5 may be arranged on the entire outer surface of the lower end portion 121b', but the curved portion 121c' of the ferrite core 121' shown in Figures 27 and 28 may be arranged on a portion of the outer surface of the lower end portion 121b'.

[0201] The planar portion 121d may be located at the upper end 121a' and the lower end 121b', respectively, and these may be connected to each other and arranged continuously. Here, the planar portion 121d located at the lower end 121b' may be located between two curved portions 121c' that are facing each other on the outer surface of the lower end 121b'.

[0202] The ferrite core 121' shown in Figures 27 to 28 can be used as a substitute for the stylus pen shown in Figures 9 to 26. In this case, the cushioning member (not shown) may have a shape that can cover a portion of the lower end 121b' of the ferrite core 121'.

[0203] Figure 29 is a cross-sectional view of a stylus pen to which another modification of the ferrite core 121 shown in Figure 4 is applied; Figure 30 is a cross-sectional view showing only the ferrite core 121'' and coil portion 123 shown in Figure 29; Figure 31 is a perspective view of the ferrite core 121'' shown in Figures 29 to 30; Figure 32(a) is an enlarged front view of a portion of the ferrite core 121'' shown in Figure 31; and Figure 32(b) is a cross-sectional view of Figure 31(a) along B-B'.

[0204] Referring to Figures 29 to 31, the ferrite core 121'' in other modifications includes an upper end 121a'' and a lower end 121b''.

[0205] The lower end portion 121b'' has a tapered shape, and the outer surface of the lower end portion 121b'' includes at least one stepped portion 121c''.

[0206] The stepped portion 121c'' may be arranged on the entire outer surface of the lower end portion 121b'', or it may be arranged on a portion of the outer surface as shown in Figures 31 and 32.

[0207] The stepped portion 121c'' may include a first surface 121c1, a second surface 121c2 connected to the first surface 121c1, and a third surface 121c3 connected to the second surface 121c2. The first surface 121c1 may be a surface perpendicular to the through-hole 121h in the direction of penetration, and the third surface 121c3 may be a surface parallel to the through-hole 121h in the direction of penetration. The second surface 121c2 can connect the first surface 121c1 and the third surface 121c3. Here, although not shown in the separate drawings, the second surface 121c2 may be a curved surface that curves inward or outward.

[0208] The ferrite core 121'' has a cylindrical shape. A flat portion 121d may be provided on at least a portion of the outer surface of the ferrite core 121''. A flat portion corresponding to the flat portion 121d may also be provided on another portion of the outer surface of the ferrite core 121''. The flat portion 121d may allow the ferrite core 121'' to be stably positioned inside the housing.

[0209] The flat portion 121d may be located at the upper end 121a'' and the lower end 121b'', respectively, and these may be connected to each other and arranged continuously. Here, the flat portion 121d located at the lower end 121b'' may be located between two stepped portions 121c'' that are facing each other on the outer surface of the lower end 121b''.

[0210] Since the ferrite core 121'' shown in Figures 29 to 32 includes a stepped portion 121c'', it may have substantially the same or similar effects as the ferrite core 121 shown in Figures 4 to 5.

[0211] The ferrite core 121'' shown in Figures 29 to 32 can also be used as a substitute for the stylus pen shown in Figures 9 to 26. In this case, the cushioning member (not shown) may have a shape that can cover a portion of the lower end 121b'' of the ferrite core 121''.

[0212] Figure 33 is a perspective view of a stylus pen 1000 according to another embodiment of the present invention, Figure 34 is a cross-sectional view of a portion of the stylus pen 1000 shown in Figure 33, and Figure 35 is a perspective view of the stylus pen 1000 shown in Figure 33, excluding the housing 1010.

[0213] Referring to Figures 33 to 35, the housing 1010 forms the external appearance of the stylus pen 1000. The housing 1010 has a predetermined space formed inside and has an elongated shape in one direction. The housing 1010 may be made up of two or more parts joined together, or it may be formed as a single, integrated part.

[0214] The housing 1010 may be made of a non-conductive synthetic resin material.

[0215] A button section 1090 may be located in the housing 1010. The button section 1090 may be for performing a specific operation of the stylus pen 1000. For example, it may be a button for a cancel operation or for operating a special function.

[0216] The core 1020 includes one end that is located outside the housing 1010, and the remaining portion, excluding the aforementioned end, is located inside the housing 1010. Here, the end of the core 1020 may also be called the pen tip.

[0217] The core body 1020 may be made of a non-conductive material.

[0218] The core body 1020 may include a base portion 1021 and an outer casing portion 1025. The base portion 1021 has an elongated shape that extends along the longitudinal direction of the stylus pen 1000. The outer casing portion 1025 surrounds the sides of the base portion 1021. One end of the base portion 1021 is not covered by the outer casing portion 1025 and is exposed to the outside. The material of the outer casing portion 1025 is made of a material that is relatively harder than the material of the base portion 1021, reinforcing and protecting the base portion 1021.

[0219] An external force can cause a portion of one end of the core body 1020 to move into the housing 1010. The greater the external force, the greater the volume of the portion of the core body 1020 that enters the housing 1010. When the applied external force decreases, the portion of the core body 1020 will move out of the housing 1010 again. When the external force is removed, the portion of the core body 1020 will return to its original state.

[0220] The cushioning member 1150 is placed inside the housing 1010 and positioned between one end of the ferrite core 1210 and the inner surface of the housing 1010. The cushioning member 1150 may be placed inside the tapered portion 1010t of the housing 1010. Here, the tapered portion 1010t of the housing 1010 is the part adjacent to one end of the core body 1020 at both ends of the housing 1010, and has a shape in which its width and diameter become narrower towards the end of one end of the housing 1010.

[0221] The buffer member 1150 has a conical or polygonal pyramidal shape and has a through hole through which one end of the ferrite core 1210 and the body portion between one end and the other end of the core body 1020 pass. The inner surface defining the through hole may have a shape corresponding to the outer surface of one end of the ferrite core 1210 and the outer surface of the body portion of the core body 1020. Here, the body portion of the core body 1020 refers to the portion of the core body 1020, which is elongated in one direction, that is placed within the through hole of the ferrite core 1210.

[0222] The cushioning member 1150 may be made of an elastic material such as rubber to act as a buffer between the ferrite core 1210 and the housing 1010. Such a cushioning member 1150 can block external electrical or magnetic influences.

[0223] The cushioning member 1150 has a shape that covers one end of the ferrite core 1210.

[0224] The tapered portion 1010t of the housing 1010 and the virtual tangent line that commonly contacts a portion of the core body 1020 located outside the housing 101 (or the pen tip) can form a predetermined angle, as shown in Figure 4. Here, the predetermined angle is preferably within 30°. If the predetermined angle is within 30°, there is an advantage that the stylus pen according to other embodiments of the present invention can be drawn with the contact surface tilted at 60°.

[0225] The inductor section 1200 can constitute an LC resonant section with a capacitor section (not shown). The resonant frequency can be set by the inductance (L) value of the inductor section 1200 and the capacitance (C) value of the capacitor section (not shown). The resonant frequency may be varied by changing the inductance (L) value of the inductor section 1200 and / or the capacitance (C) value of the capacitor section (not shown).

[0226] The inductor section 1200 includes a ferrite core 1210 and a coil section 1230 wound around the outer surface of the ferrite core 1210.

[0227] The ferrite core 1210 may have an overall cylindrical, elliptical, or polygonal cylindrical shape, and a through-hole 1210h may be formed that penetrates the interior along the longitudinal direction of the ferrite core 1210.

[0228] The ferrite core 1210 has a through-hole 1210h through which the body portion of the core 1020 passes. The body portion of the core 1020 can reciprocate linearly along its longitudinal direction through the through-hole 1210h.

[0229] One end of the ferrite core 1210 may have a tapered shape in which the diameter or width decreases towards the end. Here, the outer surface of the tapered end may include at least one inwardly curved portion 121c, as shown in Figure 5.

[0230] The ferrite core 1210 may include an upper end 121a and a lower end 121b positioned below the upper end 121a, as shown in Figure 5. Here, the upper end 121a and the lower end 121b may be formed as a single unit.

[0231] The coil portion 1230 may be wound around a ferrite core (1230) in at least one layer.

[0232] The coil portion 1230 is electrically connected to the substrate 2100. The coil portion 1230 may include a first connecting portion 1231 and a second connecting portion 1232 for connecting to the substrate 2100. The first connecting portion 1231 is positioned on the fixing bracket 1600 and its end is electrically connected to a first terminal portion 2131 of the substrate 2100. The second connecting portion 1232 is positioned on the fixing bracket 1600 and its end is electrically connected to a second terminal portion 2132 of the substrate 2100. Here, the fixing bracket 1600 may have grooves in which the first connecting portion 1231 and the second connecting portion 1232 are positioned. The grooves may be formed on the outer surface of the fixing bracket 1600 along the longitudinal direction of the stylus pen 1000. The grooves can guide the first connecting portion 1231 and the second connecting portion 1232 of the coil portion 1230, and have the advantage of protecting the first connecting portion 1231 and the second connecting portion 1232 from external impacts.

[0233] Figure 36 is a perspective view of only the fixed bracket 1600 shown in Figure 25, Figure 37 is a perspective view of the fixed bracket 1600 shown in Figure 36 from a different direction, and Figure 38 is a part of a perspective view of Figure 35 from a different direction.

[0234] Referring to Figures 35 to 38, the fixing bracket 1600 is fixed and positioned inside the housing 1010. The fixing bracket 1600 may be positioned inside the housing 1010 between the inductor section 1200 and the substrate bracket 1900. One end of the fixing bracket 1600 may be connected to the inductor section 1200, and the other end of the fixing bracket 1600 may be connected to the substrate bracket 1900.

[0235] One end of the fixed bracket 1600 may include an insertion groove 1620 into which the other end of the ferrite core 1210 of the inductor portion 1200 is inserted. The insertion groove 1620 can be defined as the first partition wall 1611 and the inner wall 1622 of the fixed bracket 1600.

[0236] The first partition wall 1611 can contact the other end of the ferrite core 1210, and the first partition wall 1611 has a through hole 1610 through which the core body 1020 passes.

[0237] The inner wall 1622 may include a number of projections 1621 that protrude into the insertion groove 1620. The number of projections 1621 can contact the outer surface of the other end of the ferrite core 1210 and serve to position the ferrite core 1210.

[0238] The other end of the fixing bracket 1600 may include locking holes 1660, 1665 into which the locking portions 1960, 1965 of the substrate bracket 1900 are inserted. There may be at least one locking hole 1660, 1665, and as shown in the drawing, one may be located on the upper side and one on the lower side of the fixing bracket 1600. The fixing bracket 1600 may be connected to the substrate bracket 1900 by the locking portion 1960 of the substrate bracket 1900 being connected to the locking hole 1660.

[0239] The other end of the fixing bracket 1600 may include a guide projection 1667. The guide projection 1667 may be formed as an extension along the longitudinal direction of the fixing bracket 1600. The guide projection 1667 may be connected to a guide portion 1967 of the substrate bracket 1900. By connecting the guide projection 1667 to the guide portion 1967 of the substrate bracket 1900, the fixing bracket 1600 can be positioned along the longitudinal direction of the stylus pen 1000.

[0240] The other end of the fixing bracket 1600 may include a second partition wall 1680. The second partition wall 1680, together with the base plate bracket 1900, fixes the position of the elastic member 1800. That is, the elastic member 1800 may be fixedly mounted between the second partition wall 1680 and the base plate bracket 1900.

[0241] The fixed bracket 1600 is arranged to cover the moving bracket 1300, the elastic body 1700, and the elastic member 1800. The fixed bracket 1600 may have an internal storage space 1640 in which the moving bracket 1300, the elastic body 1700, and the elastic member 1800 are arranged. In the storage space 1640 of the fixed bracket 1600, the moving bracket 1300 can perform a linear reciprocating motion.

[0242] The fixed bracket 1600 may include two or more electrode patterns 1690. The electrode patterns 1690 may be respectively arranged on both outer surfaces of the fixed bracket 1600. The electrode patterns 1690 may be plated on the outer surface of the fixed bracket 1600 made of a non-conductive material. For example, the electrode patterns 1690 may be formed on the outer surface of the non-conductive fixed bracket 1600 by LDS (Laser direct structuring) and LMA (Laser Manufacturing Antenna).

[0243] The electrode pattern 1690 may be arranged around the guide hole 1630 of the fixed bracket 1600 and may have a concavo-convex shape or a "ji" character shape. One end of the electrode pattern 1690 may contact the electrode pattern 1390 of the moving bracket 1300 or may be arranged at a predetermined interval from it, and the other end of the electrode pattern 1690 may be electrically connected to the terminal portions 2191, 2192 of the substrate 210 "0.

[0244] Due to the movement of the moving bracket 1300 synchronized with the movement of the core 1020, the electrode pattern 1690 may contact the electrode pattern 1390 of the moving bracket 1300 or may be arranged at a predetermined interval from the electrode pattern 1390 of the moving bracket 1300. This will be described later with reference to separate drawings.

[0245] FIG. 39 is a perspective view excluding the inductor unit 1200 and the fixed bracket 1600 shown in FIG. 35, FIG. 40 is a perspective view of FIG. 39 viewed from another direction, and FIG. 41 is a cross-sectional view of FIG. 39.

[0246] Referring to FIGS. 34 to 39, the moving bracket 1300 moves together in synchronization with the core body 1020. If an external force is applied to one end of the core body 1020 from the outside, the core body 1020 moves inside the housing 1010, and the moving bracket 1300 moves together with the core body 1020.

[0247] The moving bracket 1300 is configured to accommodate the other end of the core body 1020, the magnetic body 1400, and the protection member 1500. The moving bracket 1300 may have a storage portion for accommodating the other end of the core body 1020, the magnetic body 1400, and the protection member 1500.

[0248] Inside the storage portion, the magnetic body 1400 and the protection member 1500 are arranged to surround the other end of the core body 1020. For this reason, the magnetic body 1400 may have a cylindrical shape with a through-hole through which the other end of the core body 1020 passes, and the protection member 1500 may have a cylindrical shape with a through-hole through which the other end of the core body 1020 passes.

[0249] The magnetic body 1400 includes a magnetic substance and moves together with the core body 1020 in synchronization with the movement of the core body 1020. Due to the movement of the magnetic body 1400, the distance from the inductor portion 1200 fixedly arranged inside the housing 1010 changes. Due to the change in the distance, the inductance of the inductor portion 1200 changes.

[0250] The protection member 1500 includes an elastic substance and may be arranged to be sandwiched between the other end of the core body 1020 and the moving bracket 1300. The other end of the core body 1020 may be protected by the protection member 1500. Since the protection member 1500 is sandwiched between the other end of the core body 1020 and the moving bracket 1300, the moving bracket 1300 may be synchronized with the movement of the core body 1020.

[0251] As shown in FIG. 38, the protection member 1500 may include a protruding portion 1510 that protrudes outward on the outer surface. The protruding portion 1510 may be sandwiched in an insertion groove 1310 formed in the moving bracket 1300. With such a protruding portion 1510 of the protection member 1500 and the insertion groove 1310 of the moving bracket 1300, the protection member 1500 may be stably fixed to the moving bracket 1300, and thereby, the other end portion of the core body 1020 may be fixed to the moving bracket 1300.

[0252] The moving bracket 1300 may include a first protruding portion 1330a and a second protruding portion 1330b. The first protruding portion 1330a and the second protruding portion 1330b may protrude in an outer direction or a direction perpendicular to the longitudinal direction of the stylus pen 1000 on the outer surface of the moving bracket 1300. The first protruding portion 1330a and the second protruding portion 1330b may be disposed in guide holes 1630 of the fixed bracket 1600 shown in FIG. 35. When the moving bracket 1300 moves in synchronization with the movement of the core body 1020, the first protruding portion 1330a and the second protruding portion 1330b may move along the guide holes 1630 of the fixed bracket 1600.

[0253] The moving bracket 1300 may include a third protruding portion 1350. The third protruding portion 1350 may protrude in an outer direction or a direction perpendicular to the longitudinal direction of the stylus pen 1000 on the outer surface of the moving bracket 1300. The third protruding portion 1350 may be disposed in a guide hole 1650 of the fixed bracket 1600 shown in FIG. 35. When the moving bracket 1300 moves in synchronization with the movement of the core body 1020, the third protruding portion 1350 may move along the guide hole 1650 of the fixed bracket 1600.

[0254] The movable bracket 1300 may include an extension 1370. The extension 1370 may extend along the longitudinal direction of the stylus pen 1000 on the outer surface of the movable bracket 1300. Alternatively, the extension 1370 may extend along the longitudinal direction of the core body 1020 on the outer surface of the movable bracket 1300. The extension 1370 may have a structure and shape that allows it to be placed inside the elastic body 1700. An extension 1870 of the elastic member 1800 may be placed above the end of the extension 1370.

[0255] The movable bracket 1300 may include an electrode pattern 1390. The electrode pattern 1390 may be arranged on the outer surface of the movable bracket 1300 on which the extension portion 1370 is formed, and on the first and second protrusions 1330a and 1330b.

[0256] The electrode pattern 1390 may be electrically connected by contact with the elastic body 1700 surrounding the extension 1370 of the movable bracket 1300. The electrode pattern 1390 may be electrically connected by contact with the electrode pattern 1690 of the fixed bracket 1600 shown in Figure 35, and the contact with the electrode pattern 1690 of the fixed bracket 1600 may be separated by the movement of the core body 1020, thereby electrically separating them.

[0257] The electrode pattern 1390 may be plated onto the outer surface of the movable bracket 1300, which is made of a non-conductive material. For example, the electrode pattern 1390 may be formed on the outer surface of the movable bracket 1300, which is made of a non-conductive material, using LDS (Laser direct structuring) and LMA (Laser Manufacturing Antenna).

[0258] The electrode pattern 1390 may include a base electrode pattern 1391 and first and second extension patterns 1393a and 1393b.

[0259] The base electrode pattern 1391 is positioned on the outer surface of the movable bracket 1300 and may be positioned to surround the extension 1370 of the movable bracket 1300. The base electrode pattern 1391 is in contact with one end of the elastic body 1700.

[0260] The first and second extension patterns 1393a and 1393b extend from both sides of the first electrode pattern 1391, respectively. The first extension pattern 1393a may be positioned on the first projection 1330a, and the second extension pattern 1393b may be positioned on the second projection 1330b. The first and second extension patterns 1393a and 1393b may contact the electrode pattern 1690 of the fixed bracket 1600 shown in Figure 35, or the contact may be released by the movement of the core body 1020.

[0261] The elastic body 1700 is made of a conductive material and may have a spring shape. The elastic body 1700 may be placed between the movable bracket 1300 and the elastic member 1800. Here, the elastic body 1700 may be sandwiched between the movable bracket 1300 and the elastic member 1800 in a partially compressed state, rather than fully compressed. If the external force applied to the movable bracket 1300, which is synchronized with the movement of the core body 1020, is smaller than the elastic force pushing outward from the partially compressed elastic body 1700, the elastic body 1700 will not be compressed. If the external force becomes larger than the elastic force, the elastic body 1700 will begin to be compressed.

[0262] The extension 1370 of the movable bracket 1300 and the extension 1870 of the elastic member 1800 may be arranged together inside the elastic body 1700. This allows for the utilization of the internal space of the elastic body 1700, which has the advantage of reducing the internal volume of the stylus pen 1000.

[0263] One end of the elastic body 1700 is electrically connected to the electrode pattern 1390 of the movable bracket 1300, and the other end is electrically connected to the terminal portion 2110 of the substrate 2100. The elastic body 1700 may include a connecting wire 1710 that connects the elastic body 1700 to the terminal portion 2110 of the substrate 2100. One end of the connecting wire 1710 may be connected to the elastic body 1700, and the other end may be connected to the terminal portion 2110 of the substrate 2100. To protect and guide the connecting wire 1710, the elastic member 1800 and the substrate bracket 1900 may have guide grooves in which the connecting wire 1710 is positioned.

[0264] The elastic member 1800 is made of a non-conductive material and has a predetermined elasticity. For example, the elastic member 1800 may be rubber.

[0265] The elastic member 1800 may be placed between the movable bracket 1300 and the substrate bracket 1900.

[0266] Figure 42 is a perspective view of only the elastic member 1800 shown in Figure 39, and Figure 43 is a perspective view of the substrate bracket 1900 and substrate 2100 shown in Figure 39.

[0267] Referring to Figures 36 to 43, the elastic member 1800 may include an extension 1870. The extension 1870 may extend from the outer surface of the elastic member 1800 toward the movable bracket 1300. The extension 1870 may be located inside the elastic body 1700.

[0268] The elastic member 1800 may include a guide groove 1810. The guide groove 1810 may be formed on the outer surface of the elastic member 1800 along the longitudinal direction of the stylus pen 1000. A connecting line 1710 of the elastic body 1700 may be placed in the guide groove 1810.

[0269] The elastic member 1800 may include a mounting groove 1850. The mounting groove 1850 is formed on the outer surface of the elastic member 1800. The mounting groove 1850 may be disposed on the side facing the extension portion 1870. The mounting portion 1910 of the substrate bracket 1900 may be inserted into the mounting groove 1850. A locking groove 1851 having a shape corresponding to the protrusion 1915 of the mounting portion 1910 of the substrate bracket 1900 may be formed inside the mounting groove 1850. Through this, the elastic member 1800 may be stably fixedly mounted to the substrate bracket 1900.

[0270] The substrate bracket 1900 supports the substrate 2100 inside the housing 1010 and is coupled to the elastic member 1800 to support the elastic member 1800.

[0271] The substrate bracket 1900 may include a side portion 1940 that guides and supports the side portion of the substrate 2100.

[0272] The substrate bracket 1900 may include a mounting portion 1910 for coupling with the elastic member 1800. The mounting portion 1910 protrudes in the direction of the moving bracket 1300 from the substrate bracket 1900. The mounting portion 1910 may include protruding protrusions 1915 on the outer surface. The protrusions 1915 may protrude in a direction perpendicular to the protruding direction of the mounting portion 1910.

[0273] The substrate bracket 1900 may include a guide groove 1920. The guide groove 1920 can guide and protect the connection line 1710 of the elastic body 1700.

[0274] The substrate 2100 is disposed on the substrate bracket 1900.

[0275] The substrate 2100 may include a number of terminal portions 2110, 2131, 2132, 2191, and 2192. Of the number of terminal portions 2110, 2131, and 2132, terminal portion 2110 is electrically connected to the elastic body 1700, and the first and second terminal portions 2131 and 2132 are electrically connected to the coil portion 1230 of the inductor portion 1200. The third and fourth terminal portions 2191 and 2192 are electrically connected to electrode patterns 1690 arranged on both sides of the outer surface of the fixing bracket 1600, respectively.

[0276] The substrate 2100 includes a capacitor section (not shown). One or more capacitors constituting the capacitor section (not shown) may be arranged on the substrate 2100.

[0277] The substrate 2100 may include a circuit pattern that electrically connects one or more capacitors (not shown) in the capacitor section to a number of terminal sections 2110, 2131, 2132.

[0278] Figure 44 is a diagram illustrating the movement of the movable bracket 1300 due to the movement of the core body 1020 shown in Figures 35 to 43, and the electrical contact and release of contact between the fixed bracket 1600 and the movable bracket 1300.

[0279] Figure 44(A) shows the state when no external force acts on the core body 1020, and Figure 44(B) shows the state when a predetermined external force acts on the core body 1020 and the movable bracket 1300 moves in one direction.

[0280] First, referring to Figure 44(A), if no external force acts on the core 1020, the electrode pattern 1390 of the movable bracket 1300 will be in contact with the electrode pattern 1690 of the fixed bracket 1600. In other words, the electrode pattern 1390 of the movable bracket 1300 and the electrode pattern 1690 of the fixed bracket 1600 are electrically connected to each other.

[0281] The elastic body 1700 pushes the second projection 1330b of the movable bracket 1300 toward the core body 1020, allowing the electrode pattern 1390 positioned on the outer surface of the second projection 1330b to maintain contact with the electrode pattern 1690 of the fixed bracket 1600.

[0282] Next, referring to Figure 44(B), when a predetermined external force acts on the core body 1020 and the core body 1020 moves in one direction, the movable bracket 1300 moves in the same direction in conjunction with the core body 1020. As the movable bracket 1300 moves in the same direction, the second projection 1330b also moves in the same direction. As the second projection 1330b moves, the electrode pattern 1390 of the movable bracket 1300 is released from contact with the electrode pattern 1690 of the fixed bracket 1600. Similarly, the first projection 1330a, located on the opposite side of the second projection 1330b, also moves, and the electrode pattern 1390 of the movable bracket 1300 is released from contact with the electrode pattern 1690 of the fixed bracket 1600. Then, the elastic body 1700 is compressed by the movement of the movable bracket 1300.

[0283] As shown in Figure 44(B), when a predetermined external force acts on the core 1020 and the core 1020 moves in one direction, the contact between the electrode pattern 1390 of the movable bracket 1300 and the electrode pattern 1690 of the fixed bracket 1600 is released. This release of contact changes the capacitance of the capacitor (not shown) mounted on the substrate 2100. This change in capacitance changes the frequency of the pen signal emitted from the stylus pen 1000. The receiving side that receives the pen signal can sense the changed frequency and determine that the stylus pen 1000 has made contact with the screen.

[0284] Figure 45 is a schematic representation of Figures 44(A) and (B), respectively, and Figure 46 is a simplified representation of a stylus pen according to another embodiment of the present invention, with Figures 44(A) and (B) respectively constructed as equivalent circuit diagrams.

[0285] Referring to Figures 45 and 46 (A) and (B), a number of capacitors C1, C2, C3, and Cs are arranged on the substrate 2100. The number of capacitors C1, C2, C3, and Cs can constitute a capacitor section (not shown). At least one of the capacitors C1, C2, and C3 is connected in parallel to each other to maintain a constant capacitance value, and the auxiliary capacitor Cs is connected in parallel to or not connected to the basic capacitor by contact or release between the electrode pattern 1690 of the fixed bracket 1600 and the electrode pattern 1390 of the movable bracket 1300 shown in Figure 44.

[0286] First, as shown in Figures 45(A) and 46(A), with no external force acting on the core 1020, the electrode pattern 1690 of the fixed bracket 1600 and the electrode pattern 1390 of the movable bracket 1300 are in contact with each other, so the auxiliary capacitor Cs is connected in parallel with the basic capacitors C1, C2, and C3. Therefore, the capacitance of the capacitor section (not shown) is the sum of the capacitance values ​​of the basic capacitors C1, C2, and C3 and the capacitance of the auxiliary capacitor Cs.

[0287] Next, as shown in Figures 45(B) and 46(B), when a predetermined external force is applied to the core 1020, the movement of the movable bracket 1300, which is synchronized with the movement of the core 1020, causes the electrode pattern 1390 of the movable bracket 1300 to release contact with the electrode pattern 1690 of the fixed bracket 1600. Therefore, the auxiliary capacitor Cs cannot be electrically connected to the basic capacitors C1, C2, and C3, and the capacitance of the capacitor section (not shown) is changed to the capacitance values ​​of the basic capacitors C1, C2, and C3.

[0288] In particular, referring to Figure 46(B), it can be seen that the electrode pattern 1390 of the movable bracket 1300 and the electrode pattern 1690 of the fixed bracket 1600 are in contact in two places. This can be understood from the fact that, as shown in Figures 39 and 40, the fixed bracket 1600 has two electrode patterns 1690, and the first and second extension patterns 1393a and 1393b are positioned on the first and second projections 1330a and 1330b of the movable bracket 1300.

[0289] If the external force applied to the core body 1020 is not strong enough to separate the first and second extension patterns 1393a and 1393b from the two electrode patterns 1690 of the fixed bracket 1600, that is, if the first extension pattern 1393a separates from one electrode pattern 1690 of the fixed bracket 1600, but the second extension pattern 1393b does not separate from the other electrode pattern 1690 of the fixed bracket 1600, then the auxiliary capacitor Cs remains connected in parallel with the basic capacitors C1, C2, and C3.

[0290] On the other hand, the auxiliary capacitor Cs is electrically disconnected from the basic capacitors C1, C2, and C3 only when the external force applied to the core body 1020 is strong enough to completely separate the first and second extension patterns 1393a and 1393b from the two electrode patterns 1690 of the fixed bracket 1600. Therefore, using the stylus pen 1000 according to another embodiment of the present invention has the advantage of clearly defining the reference pressure that distinguishes between hover and contact, thereby clearly distinguishing between hover and contact. In particular, even if one of the extension patterns 1393a and 1393b does not make contact with one of the two electrode patterns 1690 of the fixed bracket 1600 due to manufacturing process problems or user negligence during the production of the stylus pen, the stylus pen 1000 according to another embodiment of the present invention has the advantage of clearly distinguishing between the hover state and the contact state, as one electrode pattern different from the other extension pattern can still be maintained in contact.

[0291] Figure 47 is a perspective view of the stylus pen 1000 according to another embodiment of the present invention shown in Figure 33, viewed from the direction of the core body 1020; Figure 48(A) is a part of a cross-sectional view of the stylus pen 1000 shown in Figure 47, cut along A-A'; Figure 48(B) is a part of a cross-sectional view of the stylus pen 1000 shown in Figure 47, cut along B-B'; and Figure 49 is a drawing showing side views A and B and a cross-sectional view of the ferrite core 1210 shown in Figures 47 and 48.

[0292] Referring to Figures 35, 47, and 49, the housing 1010 of the stylus pen 1000 has a rectangular cylindrical shape with rounded corners, and the portion of the nib 1020 that is exposed from the housing 1010 has a shape in which its width narrows as it moves outward.

[0293] The external shape of the housing 1010 determines the internal components that are arranged within it, and the internal components also correspond to the shape of the housing 1010. Among the internal components, the ferrite core 1210 of the inductor section 1200 also has an optimized structure that corresponds to the external shape of the housing 1010.

[0294] As shown in Figures 48(A) and (B), the ferrite core 1210 has a first cross-sectional shape when cut in a first vertical direction (direction A-A' in Figure 47) perpendicular to the axial direction x of the ferrite core 1210 (or the longitudinal direction of the stylus pen 1000), which is different from the second cross-sectional shape when cut in a second vertical direction (direction B-B' in Figure 47). Specifically, the thickness w1 of the ferrite core 1210 in the first vertical direction is different from the thickness w2 in the second direction. More specifically, the thickness w1 in the first vertical direction is smaller than the thickness w2 in the second direction. Here, the first vertical thickness w1 can be defined as the shortest distance from the through hole 1210h of the ferrite core 1210 to the outer surface of the ferrite core 1210 in the first cross-sectional shape, and the second vertical thickness w2 can be defined as the shortest distance from the through hole 1210h of the ferrite core 1210 to the outer surface of the ferrite core 1210 in the second cross-sectional shape. Alternatively, as shown in the drawings, the first vertical thickness w1 may be the total thickness of the ferrite core 1210 in the first cross-sectional shape, and the second vertical thickness w2 may be the total thickness of the ferrite core 1210 in the second cross-sectional shape.

[0295] The ferrite core 1210 has a cylindrical or tube-like shape. A flat portion 1210d may be provided on at least a portion of the outer surface of the ferrite core 1210. A flat portion corresponding to the flat portion 1210d may also be provided on another portion of the outer surface of the ferrite core 1210. The flat portion 1210d allows the ferrite core 1210 to be stably positioned inside the housing 1010. The flat portion 1210d is formed to extend from one end to the other of the ferrite core 1210 along the axial direction x of the ferrite core 1210.

[0296] One end of the ferrite core 1210 may include at least two or more curved surfaces 1210c. At least a portion of the curved surfaces 1210c is visible in the second cross-sectional shape but not in the first cross-sectional shape. The curved surfaces 1210c may be curved in the direction toward the through-hole 1210h, from one side of one end of the ferrite core 1210 to a portion adjacent to the through-hole 1210h of the ferrite core 1210. Such curved surfaces 1210c may be arranged on opposite sides of one end of the ferrite core 1210 with respect to the through-hole 1210h.

[0297] As shown in Figures 49(1), (2), and (3), the curved portion 1210c changes from an aspherical shape to a spherical shape as it moves along the axial direction x of the ferrite core 1210. Figure 49(3) shows that the curved portion 1210c is aspherical, and Figure 49(1) shows that the curved portion 1210c is spherical. Figure 49(2) shows that the curved portion 1210c is an intermediate shape between an aspherical and a spherical shape.

[0298] At one end of the ferrite core 1210, the flat portion 1210d has a shape in which its width gradually narrows as it moves in the axial direction x of the ferrite core 1210. Here, the width of the flat portion 1210d may decrease non-linearly.

[0299] By using the ferrite core 1210 described above, the inductor section 1200, including the ferrite core 1210, can be positioned even closer to the tip of the core body 1020 inside the stylus pen 1000, as previously mentioned in Figures 6 to 8. Therefore, the inductor section 1200 can be brought even closer relative to the receiver side (not shown), which has the advantage of increasing the magnitude of the pen signal received by the receiver side.

[0300] On the other hand, the ferrite core 1210 shown in Figures 47 to 49 may be applied to the stylus pen shown in Figure 3 or Figure 22. Furthermore, the ferrite core of the stylus pen shown in Figure 3 or Figure 22 may be applied to the stylus pen of Figure 33.

[0301] In the foregoing, the features, structures, and effects described in the embodiments are included in one embodiment of the present invention and are not necessarily limited to just one embodiment. Furthermore, the features, structures, and effects exemplified in each embodiment can be combined or modified and implemented in other embodiments by a person with ordinary skill in the art to which the embodiment belongs. Therefore, the content related to such combinations and modifications should be interpreted as being included within the scope of the present invention.

[0302] Furthermore, although the above description has focused on embodiments, these are merely illustrative examples and do not limit the present invention. Anyone with ordinary skill in the art to which the present invention belongs will understand that various modifications and applications not exemplified above are possible, as long as they do not deviate from the essential characteristics of these embodiments. For example, each component specifically shown in the embodiments can be modified and implemented. Such differences in modifications and applications should be interpreted as falling within the scope of the present invention as defined in the appended claims.

[0303] Overall configuration of a waterproof stylus pen A stylus pen 100 according to one embodiment of the present invention may include a housing 101, a core 102, an inductor 120, a capacitor (not shown), a first fixing member 130, and sealing members 200a, 200a', and 200b. The details of the housing 101, core 102, inductor 120, capacitor, and first fixing member 130 are the same as described above.

[0304] A stylus pen 1000 according to another embodiment of the present invention may include a housing 1010, a core 1020, an inductor 1200, a capacitor (not shown), a fixing bracket 1600, and sealing members 2000a, 2000a', and 2000b. The details of the housing 1010, core 1020, inductor 1200, capacitor, and fixing bracket 1600 are the same as described above.

[0305] On the other hand, the sealing members 200a, 200a', and 200b of the stylus pen 100 according to one embodiment of the present invention, and the sealing members 2000a, 2000a', and 2000b of the stylus pen 1000 according to another embodiment of the present invention, may be made of synthetic rubber or thermoplastic elastomer (TPE). For example, the synthetic rubber may be nitrile butadiene rubber (NBR), fluoroelastic polymer (FKM), ethylene propylene diene monomer (EPDM), or silicone rubber. However, it is not limited thereto.

[0306] Hereinafter, with reference to the drawings attached to this specification, sealing members 200a, 200a', and 200b for a stylus pen 100 according to one embodiment of the present invention and sealing members 2000a, 2000a', and 2000b for a stylus pen 1000 according to another embodiment of the present invention will be described.

[0307] Water inflow pathways Figure 50a is a diagram showing the first and second moisture inflow paths through the core opening of the housing in the stylus pen shown in Figure 9.

[0308] Figure 50b is a diagram showing the first and second moisture inflow paths through the core opening of the housing in the stylus pen shown in Figure 34.

[0309] As shown in Figure 50a, moisture may enter the interior of the stylus pen 100 shown in Figure 9 through the core opening (not shown) of the housing 101. Here, the core opening may refer to the separation space between the housing 101 and the core 102.

[0310] Specifically, as shown in Figure 50a(a), moisture may enter the interior of the stylus pen 100 via a first moisture inflow path P1, which is a path through which moisture flows into the interior of the stylus pen 100 via the space between the housing 101 and the inductor part 120, passing through the core opening of the housing 101. Alternatively, specifically, as shown in Figure 50a(b), moisture may enter the interior of the stylus pen 100 via a second moisture inflow path P2, which is a path through which moisture flows into the interior of the stylus pen 100 via the through-hole of the ferrite core 121, passing through the core opening of the housing 101.

[0311] As shown in Figure 50b, moisture may enter the interior of the stylus pen 1000 shown in Figure 34 through the core opening of the housing 1010. Specifically, as shown in Figure 50b(a), moisture may enter the interior of the stylus pen 1000 via a first moisture inflow path P1', which is a path through which moisture enters the interior of the stylus pen 1000 via the space between the housing 1010 and the inductor part 1200, passing through the core opening of the housing 1010. Alternatively, specifically, as shown in Figure 50b(b), moisture may enter the interior of the stylus pen 1000 via a second moisture inflow path P2', which is a path through which moisture enters the interior of the stylus pen 1000 via the through hole of the ferrite core 1210, passing through the core opening of the housing 1010.

[0312] A stylus pen containing a sealing component that can block multiple water inflow routes. The stylus pen 100 shown in Figure 9 may include a plurality of sealing members 200a, 200a', and 200b that can block a plurality of moisture inflow paths P1 and P2 passing through the core opening of the housing 101. Specifically, the plurality of moisture inflow paths P1 and P2 may include a first moisture inflow path P1 and a second moisture inflow path P2. Furthermore, specifically, the plurality of sealing members 200a, 200a', and 200b may include a first sealing member 200a, 200a' that can block the first moisture inflow path P1 and a second sealing member 200b that can block the second moisture inflow path P2.

[0313] The stylus pen 1000 shown in Figure 34 may include a plurality of sealing members 2000a, 2000a', and 2000b that can block a plurality of moisture inflow paths P1' and P2' that pass through the core opening of the housing 1010. Specifically, the plurality of moisture inflow paths P1' and P2' may include a first moisture inflow path P1' and a second moisture inflow path P2'. Furthermore, specifically, the plurality of sealing members 2000a, 2000a', and 2000b may include a first sealing member 2000a, 2000a' that can block the first moisture inflow path P1' and a second sealing member 2000b that can block the second moisture inflow path P2'.

[0314] Arrangement of the first sealing member Figure 51a is a drawing showing one embodiment of a sealing member that blocks the first moisture inflow path in the stylus pen shown in Figure 50a. Figure 51b is a drawing showing one embodiment of a sealing member that blocks the first moisture inflow path in the stylus pen shown in Figure 50b. Figure 52a is a drawing showing another embodiment of a sealing member that blocks the first moisture inflow path in the stylus pen shown in Figure 50a. Figure 52b is a drawing showing another embodiment of a sealing member that blocks the first moisture inflow path in the stylus pen shown in Figure 50b.

[0315] Arrangement surrounding the outer surface of the ferrite core Figure 51a(a) is a drawing showing one embodiment of a first sealing member 200a that is positioned to cover the outer surface of the ferrite core 121 of the stylus pen 100 shown in Figure 50a. Figure 51a(b) is a cross-sectional view of the stylus pen 100 shown in Figure 51a(a) cut along line A-A'.

[0316] As shown in Figure 51a, the first sealing member 200a may be positioned to cover at least a portion of the outer surface of the ferrite core 121. Alternatively, the first sealing member 200a may be positioned to be in close contact with the inner wall of the housing 101. In this way, the first sealing member 200a can prevent moisture from flowing into the first moisture inflow path P1.

[0317] On the other hand, as described above, the stylus pen 100 shown in Figure 50a may further include an internal case 110 that is placed inside the housing 101. If the stylus pen 100 further includes an internal case 110, the first sealing member 200a may be positioned to be in close contact with the inner wall of the internal case 110.

[0318] Figure 51b(a) is a drawing showing one embodiment of a first sealing member 2000a that is positioned to cover the outer surface of the ferrite core 1210 of the stylus pen 1000 shown in Figure 50b. Figure 51b(b) is a cross-sectional view of the stylus pen 1000 shown in Figure 51b(a) cut along B-B'.

[0319] As shown in Figure 51b, the first sealing member 2000a may be positioned to cover at least a portion of the outer surface of the ferrite core 1210. Alternatively, the first sealing member 2000a may be positioned to be in close contact with the inner wall of the housing 1010. This allows the first sealing member 2000a to prevent moisture from flowing into the first moisture inflow path P1'.

[0320] Arrangement surrounding the outer surface of the fixing bracket (or first fixing member) Figure 52a(a) is a drawing showing one embodiment of the first sealing member 200a' which is positioned to cover the outer surface of the first fixing member 130 of the stylus pen 100 shown in Figure 50a. Figure 52a(b) is a cross-sectional view of the stylus pen 100 according to one embodiment of the present invention shown in Figure 52a(a), cut along C-C'.

[0321] As shown in Figure 52a, the first sealing member 200a' may be positioned to cover at least a portion of the outer surface of the first fixing member 130. Alternatively, the first sealing member 200a' may be positioned to be in close contact with the inner wall of the housing 101. In this way, the first sealing member 200a' can prevent moisture from flowing into the first moisture inflow path P1.

[0322] On the other hand, as described above, the stylus pen 100 shown in Figure 50a may further include an internal case 110 that is placed inside the housing 101. If the stylus pen 100 further includes an internal case 110, the first sealing member 200a' may be positioned to be in close contact with the inner wall of the internal case 110.

[0323] Figure 52b(a) is a drawing showing one embodiment of a first sealing member 2000a' that is positioned to cover the outer surface of the fixing bracket 1600 of the stylus pen 1000 shown in Figure 50b. Figure 52b(b) is a cross-sectional view of the stylus pen 1000 shown in Figure 52b(a) cut along D-D'.

[0324] As shown in Figure 52b, the first sealing member 2000a' may be positioned to cover at least a portion of the outer surface of the fixing bracket 1600. Alternatively, the first sealing member 2000a' may be positioned to be in close contact with the inner wall of the housing 1010. This allows the first sealing member 2000a' to prevent moisture from flowing into the first moisture inflow path P1'.

[0325] Arrangement of the second sealing member Figure 53a is a diagram showing a sealing member that blocks the second moisture inflow path in the stylus pen shown in Figure 50a. Figure 53b is a diagram showing a sealing member that blocks the second moisture inflow path in the stylus pen shown in Figure 50b.

[0326] Figure 53a(a) is a drawing showing one embodiment of a second sealing member 200b positioned in the partition wall 132 of the first fixing member 130 of the stylus pen 100 shown in Figure 50a. Figure 53a(b) is a perspective view showing the connection between the first fixing member 130 and the second sealing member 200b.

[0327] As shown in Figure 53a, the second sealing member 200b may be positioned on the partition wall 132 such that the core body 102 fills the outer perimeter of the through-hole 132h of the partition wall 132 through the first fixing member 130. Alternatively, the second sealing member 200b may be positioned so as to be in close contact with the core body 102 at the portion where the core body 102 penetrates the through-hole 132h of the partition wall 132. In this way, the second sealing member 200b can prevent moisture from flowing into the second moisture inflow path P2. On the other hand, the details of the first fixing member 130, partition wall 132, and through-hole 132h are the same as described above.

[0328] Figure 53b(a) is a drawing showing one embodiment of a second sealing member 2000b positioned on the partition wall 1611 of the fixing bracket 1600 of the stylus pen 1000 shown in Figure 50b. Figure 53b(b) is a perspective view showing the connection between the fixing bracket 1600 and the second sealing member 2000b.

[0329] As shown in Figure 53b, the second sealing member 2000b may be positioned on the partition wall 1611 such that the core body 1020 fills the outer perimeter of the through-hole 1610 of the partition wall 1611 through which the fixing bracket 1600 penetrates. Alternatively, the second sealing member 2000b may be positioned so as to be in close contact with the core body 1020 at the portion where the core body 1020 penetrates the through-hole 1610 of the partition wall 1611. This allows the second sealing member 2000b to prevent moisture from flowing into the second moisture inflow path P2'. Meanwhile, the details regarding the fixing bracket 1600, partition wall 1611, and through-hole 1610 are the same as described above.

[0330] Stylus pen including first sealing member and second sealing member Figure 54 is a drawing showing the stylus pens shown in Figures 50a and 50b, respectively, with the addition of a first sealing member and a second sealing member.

[0331] As shown in Figure 54(a), the stylus pen 100 shown in Figure 50a may include a plurality of sealing members 200a, 200a', and 200b that can block a plurality of moisture inflow paths P1 and P2 passing through the core opening (not shown) of the housing 101. Specifically, the plurality of moisture inflow paths P1 and P2 may include a first moisture inflow path P1 and a second moisture inflow path P2. Furthermore, specifically, the plurality of sealing members 200a, 200a', and 200b may include a first sealing member 200a, 200a' that can block the first moisture inflow path P1 and a second sealing member 200b that can block the second moisture inflow path P2. In other words, the stylus pen 100 can block both the first moisture inflow path P1 and the second moisture inflow path P2 by the first sealing member 200a, 200a' and the second sealing member 200b.

[0332] As shown in Figure 54(b), the stylus pen 1000 shown in Figure 50b may include a plurality of sealing members 2000a, 2000a', 2000b that can block a plurality of moisture inflow paths P1', P2' passing through the core opening of the housing 1010. Specifically, the plurality of moisture inflow paths P1', P2' may include a first moisture inflow path P1' and a second moisture inflow path P2'. Furthermore, specifically, the plurality of sealing members 2000a, 2000a', 2000b may include a first sealing member 2000a, 2000a' that can block the first moisture inflow path P1' and a second sealing member 2000b that can block the second moisture inflow path P2. In other words, the stylus pen 1000 can completely block the first moisture inflow path P1' and the second moisture inflow path P2' by using the first sealing members 2000a, 2000a' and the second sealing member 2000b.

[0333] Stylus pen including sealing material with contact area Figure 55 is a drawing showing a modified example of the sealing member shown in Figures 53a and 53b.

[0334] As described above, the second sealing member 200b shown in Figure 53a may be positioned on the partition wall 132 such that the core body 102 fills the outer perimeter of the through-hole 132h of the partition wall 132 through which the first fixing member 130 penetrates. Alternatively, the second sealing member 200b may be positioned so as to be in close contact with the core body 102 at the portion where the core body 102 penetrates the through-hole 132h of the partition wall 132. In this way, the second sealing member 200b can prevent moisture from flowing into the second moisture inflow path P2. On the other hand, the details of the first fixing member 130, partition wall 132, and through-hole 132h are the same as described above.

[0335] Furthermore, as described above, the second sealing member 2000b shown in Figure 53b may be positioned on the partition wall 1611 such that the core body 1020 fills the outer perimeter of the through-hole 1610 of the partition wall 1611 through which the fixing bracket 1600 penetrates. Alternatively, the second sealing member 2000b may be positioned so as to be in close contact with the core body 1020 at the portion where the core body 1020 penetrates the through-hole 1610 of the partition wall 1611. In this way, the second sealing member 2000b can prevent moisture from flowing into the second moisture inflow path P2'. On the other hand, the details of the fixing bracket 1600, partition wall 1611 and through-hole 1610 are the same as described above.

[0336] On the other hand, as shown in Figure 55(a), the second sealing member 200b of the stylus pen 100 shown in Figure 50a may include a sealing member body 203 and an adhesion portion 201. Specifically, the sealing member body 203 may be positioned in the partition wall 132 so as to fill the outer perimeter of the through hole 132h of the partition wall 132. Specifically, the adhesion portion 201 may be cylindrical in shape having the height of the core body 102 in the longitudinal direction, and the second sealing member 200b may be positioned so as to be in close contact with the core body 102 at the adhesion portion 201. This allows the adhesion portion 201 to maintain a state of close contact with the core body 102 at least in part as the core body 102 moves in the longitudinal direction of the core body 102. In other words, when the core body 102 moves in the longitudinal direction of the core body 102, the second sealing member 200b can prevent moisture that has flowed in through the second moisture inflow path P2 from passing through the through hole 132h located in the partition wall 132 of the first fixing member 130 via the contact portion 201.

[0337] Furthermore, as shown in Figure 55(b), the second sealing member 2000b of the stylus pen 1000 shown in Figure 50b may include a sealing member body 2003 and an adhesion portion 2001. Specifically, the sealing member body 2003 may be positioned on the partition wall 1611 so as to fill the outer casing of the through-hole 1610 of the partition wall 1611. Specifically, the adhesion portion 2001 may be cylindrical in shape having the height of the core body 1020 in the longitudinal direction, and the second sealing member 2000b may be positioned to be in close contact with the core body 1020 at the adhesion portion 2001. This allows the adhesion portion 2001 to maintain a state of close contact with the core body 1020 at least in part as the core body 1020 moves in the longitudinal direction of the core body 1020. In other words, when the core body 1020 moves in the longitudinal direction of the core body 1020, the second sealing member 2000b can prevent moisture that has flowed in through the second moisture inflow path P2' from passing through the through hole 1610 located in the partition wall 1611 of the fixed bracket 1600 via the contact portion 2001.

[0338] Stylus pen including cushioning material Referring to Figures 9, 51a, and 52a, the stylus pen 100 shown in Figure 50a may include a housing 101, a core 102, an inductor 120, a capacitor (not shown), a first fixing member 130, a buffer member 115, and first sealing members 200a, 200a'. The detailed contents of the housing 101, core 102, inductor 120, capacitor (not shown), first fixing member 130, and first sealing members 200a, 200a' are the same as described above.

[0339] Specifically, the stylus pen 100 shown in Figure 50a may further include a buffer member 115 which can be positioned between the inner surface of the housing 101 and the other end of the ferrite core 121. Here, the buffer member 115 may be positioned to cover at least a portion of the other end of the ferrite core 121. The buffer member 115 may also be positioned to be in close contact with the housing 101 and the other end of the ferrite core 121. This allows the buffer member 115 to block the path by which moisture can flow into the interior of the stylus pen 1000 through the core opening (not shown) of the housing 101.

[0340] On the other hand, as shown in Figures 4 to 7, the other end of the ferrite core 121 may have a tapered shape in which the diameter or width decreases towards the end. Also, the other end of the ferrite core 121 may include at least one curved surface portion 121c whose outer surface is curved inward. The cushioning member 115 may have an even smaller thickness than when the other end of the ferrite core 121 does not include the curved surface portion 121c, due to the curved surface portion 121c included in the other end of the ferrite core 121.

[0341] Referring to Figures 34, 51b, and 52b, the stylus pen 1000 may include a housing 1010, a core 1020, an inductor 1200, a capacitor (not shown), a fixing bracket 1600, a buffer member 1150, and first sealing members 2000a, 2000a'. The detailed contents of the housing 1010, core 1020, inductor 1200, capacitor, fixing bracket 1600, and first sealing members 2000a, 2000a' are the same as described above.

[0342] Specifically, the stylus pen 1000 shown in Figure 50b may include a buffer member 1150 which can be positioned between the inner surface of the housing 1010 and the other end of the ferrite core 1210. Here, the buffer member 1150 may be positioned to cover at least a portion of the other end of the ferrite core 1210. The buffer member 1150 may also be positioned to be in close contact with the housing 1010 and the other end of the ferrite core 1210. This allows the buffer member 1150 to block the path by which moisture can flow into the interior of the stylus pen 1000 through the core opening (not shown) of the housing 1010.

[0343] On the other hand, as shown in Figures 4 to 7, the other end of the ferrite core 1210 may have a tapered shape in which the diameter or width decreases towards the end. Also, the other end of the ferrite core 1210 may include at least one curved surface portion 121c whose outer surface is curved inward. Due to the curved surface portion 121c included in the other end of the ferrite core 121, the cushioning member 115 may have an even smaller thickness compared to the case where the other end of the ferrite core 121 does not include the curved surface portion 1210c.

[0344] Third sealing member Figure 56 is a drawing showing yet another embodiment of the sealing member that blocks the first moisture inflow path in the stylus pen shown in Figure 50b. Specifically, Figure 56(a) is a part of a perspective view of the stylus pen including the third sealing member. Figure 56(b) is a part of a cross-sectional view of Figure 56(a) taken along C-C'.

[0345] As shown in Figure 56, the stylus pen 1000 may include a third sealing member 2000c that can block the first moisture inflow path P1' shown in Figure 50b, which passes through the core opening (not shown) of the housing 1010.

[0346] As shown in Figure 56(a), the third sealing member 2000c may be positioned to cover at least a portion of the outer surface of the ferrite core 1210. Specifically, the third sealing member 2000c can cover at least a portion of the outer surface of the ferrite core 1210 near the core opening. The third sealing member 2000c may also be positioned opposite the coil portion 1230, but is not limited to this.

[0347] As shown in Figure 56(b), the third sealing member 2000c may be positioned so as to be in close contact with the inner wall of the housing 1010. This prevents moisture from flowing into the first moisture inflow path P1' shown in Figure 50b.

[0348] Cushioning member and fourth sealing member Figure 57 is a drawing showing one embodiment of a buffer member that blocks the first and second moisture inflow paths in the stylus pen shown in Figure 50b. Specifically, Figure 57(a) is a part of a perspective view of the stylus pen including the buffer member. Figure 57(b) is a part of a cross-sectional view of Figure 57(a) taken along D-D'.

[0349] As shown in Figure 57, the stylus pen 1000 may include a cushioning member 1150. Specifically, the cushioning member 1150 may be positioned to cover at least a portion of the outer surfaces of the core 1020 and the ferrite core 1210 near the core opening (not shown). More specifically, the cushioning member 1150 may have a predetermined hole (not shown) formed therein. The cushioning member 1150 can accommodate the core 1020 and the ferrite core 1210 through the predetermined hole.

[0350] As shown in Figure 57(a), the buffer member 1150 may include a fourth sealing member 2000d. Specifically, the fourth sealing member 2000d may, but is not limited to, be formed in the form of a ring. The fourth sealing member 2000d may be coupled to one end of the buffer member 1150 on the core opening side.

[0351] More specifically, the fourth sealing member 2000d may be for blocking the first moisture inflow path P1' shown in Figure 50b. As shown in Figure 57(b), the outer casing 2000d-1 of the fourth sealing member 2000d may be positioned to be in close contact with the inner wall of the housing 1010. This prevents moisture from flowing into the first moisture inflow path P1'.

[0352] On the other hand, the fourth sealing member 2000d may be for blocking the second moisture inflow path P2' shown in Figure 50b. As shown in Figure 57(b), the inner casing 2000d'-2 of the fourth sealing member 2000d may be arranged to be in close contact with the core body 1020 and / or the ferrite core 1210. This prevents moisture from flowing into the second moisture inflow path P2'. However, the present invention is not limited thereto, and the present invention may include a fourth sealing member 2000d in which the inner casing 2000d'-2 is separated from the core body 1020 and / or the ferrite core 1210 by a predetermined distance.

[0353] According to one embodiment of the present invention, the fourth sealing member 2000d may be connected to one end of the buffer member 1150 as a separate configuration. Alternatively, the fourth sealing member 2000d may be connected to one end of the buffer member 1150 to form an integral part with the buffer member 1150. However, the invention is not limited thereto.

[0354] According to one embodiment of the present invention, the fourth sealing member 2000d may be formed at one end of the cushioning member 1150 through a predetermined process. For example, the fourth sealing member 2000d may be formed through at least one process selected from the group including taping and coating processes, but is not limited thereto.

[0355] Third sealing member, cushioning member, and fourth sealing member Figure 58 is a drawing showing a stylus pen including the sealing member shown in Figure 56 and the cushioning member shown in Figure 57.

[0356] As shown in Figure 58, the stylus pen 1000 may include a third sealing member 2000c and a buffer member 1150. The buffer member 1150 may include a fourth sealing member 2000d. Specifically, the fourth sealing member 2000d and the buffer member 1150 may be positioned opposite each other and cover at least a portion of the outer surface of the core body 1020 or the ferrite core 1210 near the core body opening (not shown). In this way, the third sealing member 2000c and the fourth sealing member 2000d can work together to prevent moisture from flowing into the first moisture inflow path P1' and the second moisture inflow path P2'.

[0357] Third water inflow pathway Figure 59 is a diagram showing the third moisture inflow path through the button portion of the stylus pen shown in Figure 34. Specifically, Figure 59(a) shows both a perspective view of the stylus pen and the third moisture inflow path. Figure 59(b) shows both a part of the perspective view with the housing removed from Figure 59(a) and the third moisture inflow path.

[0358] As shown in Figure 59, the stylus pen 1000 shown in Figure 34 may include a button bracket 1190. Specifically, the button bracket 1190 is positioned within the housing 1010 to connect with the substrate bracket 1900 and cover at least a portion of the substrate 2100. The button bracket 1190 also has a predetermined groove (not shown) formed therein for connecting with the button portion 1090, thereby accommodating the button portion 1090.

[0359] As shown in Figure 59(a), moisture may enter the interior of the stylus pen 1000 shown in Figure 34 via a third moisture inflow path P3'. Specifically, as shown in Figure 59(b), the third moisture inflow path P3' may include a path P3'-1 that passes through the separation space between the button portion 1090 and the housing 1010 and reaches the substrate 2100 through a hole (not shown) formed in the button bracket 1190. Alternatively, the third moisture inflow path P3' may include a path P3'-2 that passes through the separation space between the button portion 1090 and the housing 1010 and reaches the substrate 2100 along the outer surface of the button bracket 1190.

[0360] Fourth water inflow pathway Figure 60 is a diagram showing the fourth moisture inflow path in the stylus pen shown in Figure 34, through the joint between the housing and the clicker housing. Specifically, Figure 60(a) shows both a perspective view of the stylus pen and the fourth moisture inflow path. Figure 60(b) shows both a portion of the perspective view with the housing removed in Figure 60(a) and the fourth moisture inflow path.

[0361] As shown in Figure 60, the stylus pen 1000 shown in Figure 34 may include a clicker housing 2300, a clicker cover 2400, a clicker button 2500, and a clicker elastic member 2510.

[0362] Specifically, the clicker button 2500 is positioned to be inserted into a hole (not shown) formed at the end of the clicker housing 2300 opposite the pen tip. The clicker button 2500 may be used to perform a specific action of the stylus pen 1000. The clicker button 2500 may be pressed by an external force toward the core opening (not shown).

[0363] Specifically, one end of the clicker elastic member 2510 may be connected to the clicker button 2500. The other end of the clicker elastic member 2510 may be connected to the clicker housing 2300. When the clicker button 2500 is pressed in the direction of the core opening, the clicker elastic member 2510 is compressed and can store elastic energy. When the force pressing the clicker button 2500 is released, the elastic energy stored in the clicker elastic member 2510 causes the clicker button 2500 to move in the opposite direction from the core opening.

[0364] Specifically, the clicker cover 2400 and the clicker housing 2300 are arranged inside the housing 1010 to surround the clicker button 2500 and the clicker elastic member 2510. The clicker housing 2300 may have a hole for accommodating the clicker button 2500. The clicker housing 2300 may also be coupled to the clicker cover 2400. The clicker cover 2400 may be connected to the clicker housing 2300 via a predetermined fastening part (not shown) and coupled to the end of the base plate bracket 1900. On the other hand, as described above, the clicker cover 2400 may have a predetermined groove (not shown) near the part that is coupled to the base plate bracket 1900.

[0365] As shown in Figure 60(a), moisture may enter the interior of the stylus pen 1000 shown in Figure 34 via a fourth moisture inflow path P4'. Specifically, as shown in Figure 60(b), the fourth moisture inflow path P4' is a path that passes through the joint between the housing 1010 and the clicker housing 2300 and reaches the substrate 2100 along the outer surfaces of the clicker housing 2300 and the clicker cover 2400.

[0366] Packing material Figure 61 is a diagram showing a packing member that blocks the third moisture inflow path in the stylus pen shown in Figure 59.

[0367] As shown in Figure 61, the stylus pen 1000 shown in Figure 34 may include a packing member 1290. Specifically, the packing member 1290 may be coupled to the button bracket 1190 via a predetermined groove (not shown) formed in the button bracket 1190. The packing member 1290 may also separate a hole (not shown) formed in the button bracket 1190 to block the third moisture inflow path P3' shown in Figure 59. The packing member 1290 may be positioned to be in close contact with the button bracket 1190.

[0368] As shown in Figure 61, the packing member 1290 may have a projection 1291 formed on its edge. Specifically, the projection 1291 may be formed to be in close contact with the inner wall of the housing 1010.

[0369] This prevents moisture from entering through the separation space between the button portion 1090 and the housing 1010, via a third moisture inflow path P3' that reaches the substrate 2100 through a hole formed in the button bracket 1190 or along the outer surface of the button bracket 1190.

[0370] Fifth sealing member Figure 62 is a drawing showing one embodiment of a sealing member that blocks the fourth moisture inflow path in the stylus pen shown in Figure 60. Specifically, Figure 62(a) shows a partial perspective view of the stylus pen with the housing removed, showing the sealing member. Figure 62(b) is a partial cross-sectional view of Figure 62(a) taken along E-E'.

[0371] As shown in Figure 62(a), the stylus pen 1000 shown in Figure 34 may include a fifth sealing member 2000e for blocking the fourth moisture inflow path P4' shown in Figure 60. Specifically, the fifth sealing member 2000e may be positioned in a groove (not shown) formed in the clicker cover 2400 near the area where the clicker cover 2400 is coupled to the substrate bracket 1900. The fifth sealing member 2000e can cover the outer surface of the clicker cover 2400 with the groove formed in the clicker cover 2400.

[0372] As shown in Figure 62(b), the fifth sealing member 2000e may be positioned to be in close contact with the inner wall of the housing 1010 shown in Figure 34. This prevents moisture from flowing into the fourth moisture inflow path P4'.

[0373] An embodiment of a stylus pen containing multiple sealing members Figure 63 is a diagram showing multiple waterproofing mechanisms provided in the stylus pen shown in Figure 34.

[0374] As shown in Figure 63, the stylus pen 1000 shown in Figure 34 can be equipped with multiple waterproofing means. Specifically, the waterproofing means are for blocking pathways through which moisture can enter the interior of the stylus pen 1000.

[0375] For example, the pathway through which moisture flows in may be at least one pathway selected from the group including the first moisture inflow pathway P1', the second moisture inflow pathway P2', the third moisture inflow pathway P3', and the fourth moisture inflow pathway P4 described above. However, it is not limited to these pathways.

[0376] For example, the waterproofing means may be at least one configuration selected from the group including a buffer member 1150 containing the first sealing members 2000a, 2000a', the second sealing member 2000b, the third sealing member 2000c, and the fourth sealing member 2000d, a fifth sealing member 2000e, and a packing member 1290. However, it is not limited to this.

[0377] As shown in Figure 63, the stylus pen 1000 shown in Figure 34 may include a buffer member 1150 including a first sealing member 2000a', a third sealing member 2000c, and a fourth sealing member 2000d, a packing member 1290, and a fifth sealing member 2000e. This prevents moisture from entering the interior of the stylus pen 1000 through the first moisture inflow path P1', the second moisture inflow path P2', the third moisture inflow path P3', and the fourth moisture inflow path P4'.

[0378] As described above with reference to Figure 52b, the first sealing member 2000a' may be positioned to cover at least a portion of the outer surface of the fixing bracket 1600. Alternatively, the first sealing member 2000a' may be positioned to be in close contact with the inner wall of the housing 1010. In this way, the first sealing member 2000a' can prevent moisture from flowing in through the first moisture inflow path P1'.

[0379] As described above with reference to Figure 56, the third sealing member 2000c may be positioned to cover at least a portion of the outer surface of the ferrite core 1210. Specifically, the third sealing member 2000c can cover at least a portion of the outer surface of the ferrite core 1210 near the core opening (not shown). Furthermore, the third sealing member 2000c is positioned opposite the coil portion 1230, but is not limited to this.

[0380] Furthermore, the third sealing member 2000c may be positioned so as to be in close contact with the inner wall of the housing 1010. This prevents moisture from flowing into the first moisture inflow path P1'.

[0381] As described above with reference to Figure 57, the stylus pen 1000 may include a cushioning member 1150. Specifically, the cushioning member 1150 may be positioned to cover at least a portion of the outer surfaces of the core 1020 and the ferrite core 1210 near the core opening.

[0382] Furthermore, the buffer member 1150 may include a fourth sealing member 2000d. Specifically, the fourth sealing member 2000d may be formed in the form of a ring, but is not limited thereto. The fourth sealing member 2000d may be coupled to one end of the buffer member 1150 on the core opening side.

[0383] More specifically, the fourth sealing member 2000d may be for blocking the first moisture inflow path P1'. As shown in Figure 57(b), the outer casing 2000d-1 of the fourth sealing member 2000d may be positioned to be in close contact with the inner wall of the housing 1010. This prevents moisture from flowing into the first moisture inflow path P1'.

[0384] Furthermore, the fourth sealing member 2000d may be for blocking the second moisture inflow path P2'. As shown in Figure 57(b), the inner casing 2000d'-2 of the fourth sealing member 2000d may be arranged to be in close contact with the core body 1020 and / or the ferrite core 1210. This prevents moisture from flowing into the second moisture inflow path P2'.

[0385] According to one embodiment of the present invention, the fourth sealing member 2000d may be connected to one end of the buffer member 1150 as a separate configuration. Alternatively, the fourth sealing member 2000d may be connected to one end of the buffer member 1150 to form an integral part with the buffer member 1150. However, the invention is not limited thereto.

[0386] According to one embodiment of the present invention, the fourth sealing member 2000d may be formed at one end of the cushioning member 1150 through a predetermined process. For example, the fourth sealing member 2000d may be formed through at least one process selected from the group including taping and coating. However, it is not limited thereto.

[0387] As described above with reference to Figure 61, the stylus pen 1000 shown in Figure 34 may include a packing member 1290. Specifically, the packing member 1290 may be coupled to the button bracket 1190 via a predetermined groove (not shown) formed in the button bracket 1190. The packing member 1290 can also block a hole (not shown) formed in the button bracket 1190 to block a third moisture inflow path P3'. The packing member 1290 may be positioned to be in close contact with the button bracket 1190.

[0388] Furthermore, the packing member 1290 may have a projection 1291 formed on its edge. Specifically, the projection 1291 may be formed to be in close contact with the inner wall of the housing 1010.

[0389] This prevents moisture from entering through the separation space between the button portion 1090 and the housing 1010, via a third moisture inflow path P3' that reaches the substrate 2100 through a hole formed in the button bracket 1190 or along the outer surface of the button bracket 1190.

[0390] As described above with reference to Figure 62, the stylus pen 1000 shown in Figure 34 may include a fifth sealing member 2000e for blocking the fourth moisture inflow path P4'. Specifically, the fifth sealing member 2000e may be positioned in a groove (not shown) formed in the clicker cover 2400 near the area where the clicker cover 2400 is coupled to the substrate bracket 1900. The fifth sealing member 2000e can cover the outer surface of the clicker cover 2400 with the groove formed in the clicker cover 2400.

[0391] Furthermore, the fifth sealing member 2000e may be positioned so as to be in close contact with the inner wall of the housing 1010. This prevents moisture from flowing into the fourth moisture inflow path P4'.

[0392] In the foregoing, the features, structures, and effects described in the embodiments are included in one embodiment of the present invention and are not necessarily limited to just one embodiment. Furthermore, the features, structures, and effects exemplified in each embodiment can be combined or modified and implemented in other embodiments by a person with ordinary skill in the art to which the embodiment belongs. Therefore, the content related to such combinations and modifications should be interpreted as being included within the scope of the present invention.

[0393] Furthermore, although the above description has focused on embodiments, these are merely illustrative examples and do not limit the present invention. Anyone with ordinary skill in the art to which the present invention belongs will understand that various modifications and applications not exemplified above are possible, as long as they do not deviate from the essential characteristics of these embodiments. For example, each component specifically shown in the embodiments can be modified and implemented. Such differences in modifications and applications should be interpreted as falling within the scope of the present invention as defined in the appended claims.

Claims

1. In stylus pens, Housing and A core body having one end positioned outside the housing and the other end positioned inside the housing, configured to move along its longitudinal direction by an external force acting on the one end, An inductor portion including a ferrite core having a through hole through which the core body passes, and a coil wound on the outer surface of the ferrite core, disposed inside the housing, A capacitor section is electrically connected to the inductor section to form a resonant circuit, A third sealing member is configured to block a first moisture inflow path through which moisture flows into the interior of the stylus pen via the space between the housing and the inductor portion, passing through the core opening of the housing. Includes, The third sealing member is, The ferrite core is positioned to cover the outer surface of the ferrite core near the opening of the core body and to be in close contact with the housing. The ferrite core is configured not to cover the end portion near the core opening. Stylus pen.

2. The third sealing member is configured in a non-cap type through-type shape. The stylus pen according to claim 1.

3. A fixing bracket fixedly positioned inside the housing and coupled to one end of the ferrite core, A first sealing member configured to block the first moisture inflow path and It further includes, The first sealing member is 1) The ferrite core is positioned to cover the ferrite core within the separation space formed between the coil and the fixing bracket, and is positioned in close contact with the inner wall of the housing, 2) Arranged to cover the outer surface of the fixing bracket and in close contact with the inner wall of the housing, The stylus pen according to claim 1.

4. A second sealing member configured to block a second moisture inflow path through which moisture flows into the interior of the stylus pen via the through-hole of the ferrite core, passing through the core opening of the housing. It further includes, The fixing bracket includes a partition wall that contacts the ferrite core and has a through hole formed for the core to pass through, The second sealing member is positioned in the partition wall so as to fill the outer casing of the through-hole, and the core is positioned in close contact with the core at the portion of the partition wall that penetrates the through-hole. The stylus pen according to claim 3.

5. The second sealing member includes a cylindrical contact portion having a height in the longitudinal direction of the core body, and is arranged to be in close contact with the core body at the contact portion. The stylus pen according to claim 4.

6. A buffer member is positioned between the inner surface of the housing and the other end of the ferrite core, and is positioned to cover at least a portion of the other end of the ferrite core. Further including, The stylus pen according to claim 1.

7. The cushioning member is positioned so as to be in close contact with the housing and the other end of the ferrite core. The stylus pen according to claim 6.

8. The other end of the ferrite core has a tapered shape in which the diameter or width decreases towards the end portion, and includes at least one curved surface portion whose outer surface is curved inward. The stylus pen according to claim 7.

9. The cushioning member has an even smaller thickness compared to the case where the other end of the ferrite core does not include the curved portion. The stylus pen according to claim 8.

10. The buffer member comprises a fourth sealing member located at one end near the opening of the core body. Including, The fourth sealing member is positioned such that its outer periphery is in close contact with the inner wall of the housing. The stylus pen according to claim 6.

11. The fourth sealing member is taped or coated on one surface of the cushioning member. The stylus pen according to claim 10.

12. The fourth sealing member is positioned such that its inner casing is in close contact with the ferrite core. The stylus pen according to claim 10.

13. A button portion is positioned on the outer surface of the housing, A button bracket fixed and positioned inside the housing and coupled to the button portion, A packing member is coupled to the button bracket and positioned to be in close contact with the button bracket. Further including, The stylus pen according to claim 1.

14. A circuit board bracket fixed and positioned inside the housing, covering the capacitor section, A clicker button configured to move along its longitudinal direction by an external force acting on one end, A clicker housing, one end of which is connected to the housing and which is positioned inside the housing to surround the clicker button, A clicker cover connects the substrate bracket and the clicker housing inside the housing, A fifth sealing member is positioned near the portion where the clicker cover and the substrate bracket are connected, so as to surround a predetermined groove formed in the clicker cover. It further includes, The fifth sealing member is positioned to be in close contact with the housing. The stylus pen according to claim 1.

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