KR20140096723A

KR20140096723A - Stylus Pen

Info

Publication number: KR20140096723A
Application number: KR1020130009674A
Authority: KR
Inventors: 최대석; 곽행철; 박상모
Original assignee: 엘지전자 주식회사
Priority date: 2013-01-29
Filing date: 2013-01-29
Publication date: 2014-08-06
Also published as: KR102024593B1

Abstract

1. A stylus pen for changing a capacitance of a stylus in contact with a touch screen, the stylus pen comprising: a pipe-shaped pen base including a conductive material and having an inner space; And a stylus pen including a multi-stage pen tip that is connected to one end of the pen and changes its contact thickness step by step according to a pressure applied to the pen tip according to a pressure, is recognized as a different signal even if the stylus pen input setting is not changed It is possible to increase the convenience of use.

Description

Stylus Pen {Stylus Pen}

BACKGROUND OF THE INVENTION Field of the Invention [0001] The present invention relates to a stylus pen in which an area of contact with a touch screen varies in two steps according to the degree of pressing of a pen tip.

The terminal can move And can be divided into a mobile / portable terminal and a stationary terminal depending on whether the mobile terminal is a mobile terminal or a mobile terminal. The mobile terminal can be divided into a handheld terminal and a vehicle mount terminal according to whether the user can directly carry the mobile terminal.

Such a terminal has various functions, for example, in the form of a multimedia device having multiple functions such as photographing and photographing of a moving picture, reproduction of a music or video file, reception of a game and broadcasting, etc. .

A touch screen type including a touch sensor is often used to implement various functions of a screen provided in a mobile terminal. As the function of the mobile terminal is diversified, it is easier to use the stylus pen than the hand when writing or drawing a letter on the touch screen, and a stylus pen is widely used as an accessory of a mobile terminal.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a stylus pen capable of inputting different signals by changing the touch area in two stages.

The present invention relates to a stylus pen for changing a capacitance by contacting a touch screen, the stylus pen comprising: a pipe-shaped pen base including a conductive material and having an inner space; And a multi-stage pen tip which is coupled to one end of the pen stand and whose contact thickness is changed stepwise according to the pressure applied to the pen tip according to the pressure.

The pen tip may further include a conductive rod which is disposed at an inner side of the pen tip and spaced apart from the multi-stage pen tip, and contacts the multi-stage pen tip when the multi-tip pen tip is pressed and changed in shape.

The conductive rods may be supported by the insulator without being in direct contact with the pen rods inside the pen rods, the conductive rods being made of an insulating material and projecting inward of the pen rods.

Further comprising an elastic member for reversibly moving said conductive bar in the longitudinal direction,

When the conductive rod further presses the multi-stage pen tip after being contacted with the multi-stage pen tip, the conductive rod moves toward the other end of the pen base, and when the force applied to the pen tip is removed,

A support portion protruding inward of the pen assembly; And a step formed at one end of the conductive rod, wherein the elastic member is a spring that is inserted into the conductive rod, and the spring is interposed between one end of the conductive rod and the supporting portion, .

Both ends of the spring can be fixed to the dumb tongue and the support.

Further comprising a stopper for limiting a distance by which the support rod is moved in one end direction so that the support rod is spaced apart from the multi-stage pen tip when the multi-stage pen tip is not pressed, wherein the stopper is formed at one end of the support rod, A hole may be formed so as to be exposed.

The conductive bar may further include an auxiliary conductive bar which is in contact with the other end of the conductive bar when the conductive bar moves toward the other end of the pen bar and is separated from the other end of the conductive bar when the conductive bar moves in the one end direction of the pen bar.

And an insulator formed of an insulating material and protruding inwardly of the pen holder, wherein the auxiliary conductive rod can be fixed by the insulator without being in direct contact with the pen holder inside the pen holder.

One end of the conduction rod may include a curved surface.

The pen tip may further include a stylus pen tip coupled to the other end of the pen table and thinner than the multi-stage pen tip.

The stylus pen of the present invention can be controlled so as to be recognized as a different signal even if the stylus pen input setting is not changed as the thickness of the pen tip changes, thereby improving the convenience of use.

The effects obtained by the present invention are not limited to the above-mentioned effects, and other effects not mentioned can be clearly understood by those skilled in the art from the following description will be.

1 is a perspective view of a stylus pen according to one embodiment of the present invention.
2 is a cross-sectional view of a stylus pen according to one embodiment of the present invention
3 is a front view of a touch of a multi-stage pen tip of a stylus pen according to an embodiment of the present invention.
4 is a cross-sectional view of a multi-stage pen tip of a stylus pen according to an embodiment of the present invention at a one-touch touch.
5 is a cross-sectional view of a two-stage Dutch pen tip of a stylus pen according to an embodiment of the present invention.
6 is a sectional view when the stylus pen tip of the stylus pen according to the embodiment of the present invention is pressed.

Hereinafter, a mobile terminal related to the present invention will be described in detail with reference to the drawings. The suffix "module" and " part "for the components used in the following description are given or mixed in consideration of ease of specification, and do not have their own meaning or role.

A display device having a touch sensor can be applied to a portable display device such as a mobile phone, a smart phone, a laptop computer, a digital broadcast terminal, a PDA (Personal Digital Assistants), a PMP (Portable Multimedia Player) TVs, desktop computers, and the like.

A display unit (hereinafter referred to as a touch screen 1) provided with a touch sensor displays information processed in the display device, and a user can touch the screen to input a command.

The touch screen 1 may be a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT LCD), an organic light-emitting diode (OLED), a flexible display display, and a 3D display.

The touch screen 1 and the touch sensor (not shown) have a mutual layer structure or are formed integrally with the touch screen 1 and are used as an input device in addition to the output device.

For example, when the touch sensor has the form of a touch film, a touch sheet, a touch pad, or the like, the touch sensor may be layered on the touch screen 1 to form a layer structure. &Lt; / RTI >

The touch sensor may be configured to convert a change in a pressure applied to a specific portion of the touch screen 1 or a capacitance generated in a specific portion of the touch screen 1 into an electrical input signal. The touch sensor can be configured to detect not only the position and area to be touched but also the pressure at the time of touch. The larger the touched area, the greater the change in capacitance as the conductivity of the touched conductor increases.

If there is a touch input to the touch sensor, the corresponding signal (s) is sent to the touch controller. The touch controller processes the signal (s) and then transmits the corresponding data to the controller. Thus, the control unit can know which area of the touch screen 1 is touched or the like.

The input to the touch sensor can be input by the user using his / her finger, but the touch pen can be used. When you write or draw a picture, you are familiar with using the pen, you can use the touch pen as an input tool of the touch sensor because you can draw or write a picture more accurately.

Figure 1 is a perspective view of a stylus pen 100 in accordance with one embodiment of the present invention, and Figure 2 is a cross-sectional view. The stylus pen 100 of the present invention includes a tubular fan bar made of a conductive material and having a hollow therein and a multi-stage pen tip 20 having a contact area of the touch screen 1 changed according to the pressure.

The contact area of the multi-stage pen tip 20 changes stepwise with respect to the touch screen 1. As described above, since the change in capacitance varies depending on the contact area, two or more different commands can be input in one pen tip. In the present embodiment, the multi-stage pen tip 20 discloses a case where the contact area is widened in the first stage and the second stage, but the number of stages may be increased to two or more stages.

The multi-stage pen tip 20 can make the thickness or the material of the part to be deformed in the first-step touch and the part to be deformed in the second-step touch different. The thickness of the end portion 21 of the multi-stage pen tip 20 to be deformed at the time of one-step touch is reduced, and the thickness of the portion 22 adjacent to the pen base 10 of the multi- It can be thickened. Due to the difference in thickness, the first touch can be performed with a small force and the second touch can be pressed with a larger force.

The pen tip 10 may further include a stylus pen tip 30 at the other end thereof. The stylus pen tip (30) is touched only in a small area and can be used for writing or drawing a picture. Unlike the multi-stage pen tip 20, the multi-pen tip 30 only has one kind of touch input.

However, the conductive bar 40 may be used to increase the change in the electric capacity. In the case of the multi-stage pen tip 20 shown in FIG.

Referring to FIG. 2, the conductive bar 40 is disposed at the other end inside the pen assembly 10 of the stylus pen 100, away from the multi-stage pen tip 20. When the multi-stage pen tip 20 is pressed, its shape changes and comes into contact with the conductive rod 40, and the pulling force of the current flowing on the touch screen 1 by the conductive rod 40 becomes stronger, Increase the capacity change.

That is, when the multi-stage pen tip 20 is in contact with the touch screen 1, the conductive rod 40 may exhibit a large change in capacitance compared to the conventional stylus pen 100.

The longer the length of the conductive bar 40, the greater the change in the electric capacity. The end 42 of the conductive bar 40 may have a gentle curved shape to enhance contact with the pen tip.

The conductive rod 40 is supported by the insulator 15 without directly touching the pen base 10 and the conductive rod 40 is movable in the longitudinal direction without being fixed to the insulator 15. The insulator 15 supports the conductive rod 40 and blocks direct current flow to the pen base 10. Therefore, when the contact tip touches the touch screen 1 using the tip pen tip 30 at the other end, current does not flow through the conductive rod 40. [

It may be provided with an elastic member such as a spring 50 to move toward the other end and return to its original position. The spring 50 is interposed between the step 41 formed at one end portion of the conductive bar 40 and the support portion protruding inward of the pen bar 10 so that the conductive bar 40 is compressed when moved in the other end direction, When it is removed, it returns to its original shape and pushes the conductive rod (40) in one direction.

At this time, both ends of the spring 50 and the step 41 of the conductive rod 40 and the insulator 15 can be fixed so that the conductive rod 40 is spaced apart from the multi-stage pen tip 20. 3 to 5, one end of the conductive bar 40 has a gentle curve, and a stopper 12 protruding from one end of the pen bar 10 is exposed so that only a part of the end of the conductive bar 40 is exposed . The stopper 12 is made of an insulating material so as not to be electrically connected to the pen base 10 when the multi-stage pen tip 20 is not in contact.

The auxiliary conductive rods 45 located at the other end of the conductive rods 40 are contacted or spaced while the conductive rods 40 move in the longitudinal direction. When the conductive bar 40 moves in the other direction, the other end of the conductive bar 40 contacts the auxiliary conductive bar 45, and the conductive bar 40 extends.

When the auxiliary conductive bar 45 and the conductive bar 40 are in contact with each other, a change in capacitance in the touch screen 1 becomes larger, so that a change in capacitance in the two-stage contact of the multi-stage pen tip 20 becomes larger.

The auxiliary conductive rod 45 is also supported by the insulator 15 'and disposed inside the pen holder 10 so as to be spaced apart from the pen holder. However, unlike the conductive bar 40, the auxiliary conductive bar 45 does not move and can be fixed to the insulator 15 '.

Hereinafter, the deformation of the multi-stage pen tip 20 and the stylus pen tip 30 in contact with the touch screen 1 will be described with reference to FIG. 3 to FIG.

3 is a sectional front view of the multi-stage pen tip 20 of the stylus pen 100 according to an embodiment of the present invention, FIG. 4 is a sectional view of the multi- It is a city section. FIG. 6 is a sectional view when the stylus pen tip 30 is pressed.

As shown in FIG. 3, when the stylus pen 100 is not used, the multi-stage pen tip 20 is not deformed, but is kept apart from the conductive rod 40. The distance between the conductive rod 40 and the separation distance a is a distance at which the multi-stage pen tip 20 is deformed for one-touching, for example, about 1 mm.

As shown in FIG. 4, the multi-stage pen tip 20 is pressed by the end portion (a) to change the shape and increase the contact area. The contact area (1) of the multi-stage pen tip (20) at the one-step touch is larger than the contact area (3) of the special pen tip (30) (see FIG. The pen tip tip 30 of the stylus pen tip 30 touches the touch screen 1 at an area smaller than the contact area (2) at the first touch because the pen tip itself is smaller than the multi-tip pen tip 20.

The conductive rods 40 do not move and are spaced apart from the auxiliary conductive rods 45 by a distance of (b). 5, when the two-step touch is performed, the multi-step tip tip 20 changes shape by (b) and the conductive bar 40 moves by (b) and contacts the auxiliary conductive bar 45. The contact area (2) at the time of the two-step touch is larger than the contact area (1) at the time of the one-step touch, and the contact with the auxiliary conductive bar (45)

6 is a sectional view when the stylus pen tip 30 is pressed and contacts the touch screen 1 at a small area (3) due to the smaller tip tip compared to the multi-tip pen tip 20, and the conductive rod 40 or the auxiliary conductive rod 45, The change of the electric capacity is smaller than the multi-stage pen tip 20 described above and is recognized as a touch input different from the multi-stage pen tip 20 touch input.

The display device can be set to recognize different touch inputs according to the range of the electric capacity so that various inputs can be performed without changing the setting of the display device It is possible.

For example, it is possible to erase a letter or picture created by the one-step touch of the multi-stage pen tip 20 by writing a figure or a letter with the special pen tip 30, and to display a highlight like a highlighter by a two-

As described above, according to the stylus pen 100 of the present invention, it is possible to control the recognition of the stylus pen 100 as a different signal even if the stylus pen 100 input setting is not changed as the thickness of the pen tip is changed.

It will be apparent to those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof.

Accordingly, the above description should not be construed in a limiting sense in all respects and should be considered illustrative. The scope of the present invention should be determined by rational interpretation of the appended claims, and all changes within the scope of equivalents of the present invention are included in the scope of the present invention.

1: touch screen 100: stylus pen
10: Fenders 15, 15 ': Insulator
20: Multi-tip pen tip 30: Tip pen tip
40: conduction rod 45: auxiliary conducting rod
50: spring

Claims

1. A stylus pen for changing a capacitance by contacting a touch screen,
A pipe-shaped pendulum including a conductive material and having an empty interior; And
Wherein the stylus pen comprises a multi-stage pen tip which is coupled to one end of the pen stand and whose contact thickness is changed stepwise according to the pressure applied to the pen tip according to the pressure.

The method according to claim 1,
Wherein the stylus pen further comprises a conductive bar disposed at an inner one end of the pen stand and spaced apart from the multi-stage pen tip, and contacting the multi-stage pen tip when the multi-stage pen tip is pressed and changed in shape.

3. The method of claim 2,
Further comprising an insulator made of an insulating material and protruding inward of the pen base,
Wherein the conductive rod is supported by the insulator without being in direct contact with the penholder inside the penholder.

3. The method of claim 2,
Further comprising an elastic member for reversibly moving said conductive bar in the longitudinal direction,
When the conductive rod further contacts the multi-stage pen tip and then presses the multi-stage pen tip, the conductive rod moves toward the other end of the pen base,
And when the force applied to the pen tip is removed, the stylus pen returns to the one end direction of the pen.

5. The method of claim 4,
A support portion protruding inward of the pen assembly; And
Further comprising a step formed at one end of the conductive rod,
Wherein the elastic member is a spring fitted to the conductive rod,
Wherein the spring is interposed between one end of the conductive rod and the supporting portion and is extended and contracted in accordance with a longitudinal movement of the conductive rod.

6. The method of claim 5,
And both ends of the spring are fixed to the hammock and the support portion.

6. The method of claim 5,
Further comprising a stopper for limiting a distance in which the multi-stage pen tip is moved in one direction so that the support bar is separated from the multi-stage pen tip when the multi-stage pen tip is not pressed,
Wherein the stopper is formed at one end of the pen stand, and the hole is formed such that only a part of the end of the support rod is exposed.

5. The method of claim 4,
Further comprising an auxiliary conductive bar which is in contact with the other end of the conductive rod when the conductive bar moves in the other end direction of the pen base and is separated from the other end of the conductive bar when the conductive bar moves in one direction of the pen base.

9. The method of claim 8,
Further comprising an insulator made of an insulating material and protruding inward of the pen base,
Wherein the auxiliary conductive bar is fixed by the insulator without being in direct contact with the pen holder in the inside of the pen holder.

3. The method of claim 2,
And one end of the conductive rod includes a curved surface.

The method according to claim 1,
And a stylus pen tip coupled to the other end of the pen table and thinner than the multi-stage pen tip.