WO2016052051A1 - 情報入力ペン - Google Patents
情報入力ペン Download PDFInfo
- Publication number
- WO2016052051A1 WO2016052051A1 PCT/JP2015/074738 JP2015074738W WO2016052051A1 WO 2016052051 A1 WO2016052051 A1 WO 2016052051A1 JP 2015074738 W JP2015074738 W JP 2015074738W WO 2016052051 A1 WO2016052051 A1 WO 2016052051A1
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- WO
- WIPO (PCT)
- Prior art keywords
- pen
- touch
- touch surface
- touch panel
- information input
- Prior art date
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
- G06F3/03545—Pens or stylus
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/038—Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
- G06F3/04186—Touch location disambiguation
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
Definitions
- the present invention relates to an information input pen, and more particularly to an information input pen for inputting information to a capacitive touch panel.
- a user's finger or an information input pen (hereinafter also referred to as a stylus pen) is used to input information to the capacitive touch panel.
- a capacitance is formed between the electrode in the touch panel and the stylus pen.
- the touch panel detects a contact position between the stylus pen and the touch surface by detecting a change in the weak current flowing through the capacitance.
- the touch panel is usually integrated with the display device by arranging the touch surface of the touch panel so as to overlap the display surface of the display device.
- the user can input information by touching an area where an object such as an operation button on the display surface of the display device is displayed.
- Patent Document 1 discloses that in a highly accurate touch panel that can detect a change in capacitance with high sensitivity, the detected touch position may vary depending on how the stylus pen is held. Yes.
- FIG. 16 is a diagram for explaining touch input in the conventional touch panel device disclosed in Patent Document 1.
- FIG. 16A shows a state in which a conventional stylus pen is placed vertically with respect to the touch surface and touch input is performed, and FIG. 16B is detected at and near the touch position of the touch panel.
- the distribution of the magnitude of the change in capacitance is indicated by a contour line Lc1
- FIG. 16C shows the magnitude S of the change in capacitance in the horizontal direction as a graph G1.
- FIG. 17 is a diagram for explaining touch input in the conventional touch panel device shown in FIG.
- FIG. 17A shows a state in which a conventional stylus pen is tilted with respect to the touch surface to perform touch input
- FIG. 17B is detected at and near the touch position of the touch panel.
- the distribution of the magnitude of the change in capacitance is indicated by a contour line Lc2
- FIG. 17C shows the magnitude S of the change in capacitance in the horizontal direction as a graph G2.
- the user performs touch input in a state where the stylus pen 200 stands upright with respect to the touch surface 111 of the touch panel unit 110.
- the distribution of the magnitude S of the capacitance change caused by the touch input is determined in the horizontal direction (X direction) and the vertical direction about the actual touch position RTp on the touch surface 111. It is represented by a contour line Lc1 that is symmetrical in the (Y direction).
- Xp is an axis parallel to the X direction passing through the actual touch position RTp
- Yp is an axis parallel to the Y direction passing through the actual touch position RTp
- Zp is the actual touch position RTp.
- an axis perpendicular to the touch surface 111 The Xp axis and the Yp axis are orthogonal.
- positions A1 and A2 are positions where the magnitude of the change in capacitance matches the predetermined threshold value Sth.
- the X-direction coordinate Ax of the detected touch position coincides with the X-direction coordinate of the actual touch position RTp.
- the user performs touch input with the stylus pen 200 tilted obliquely to the left with respect to the touch surface 111 of the touch panel unit 110.
- ⁇ x represents the inclination angle of the stylus pen 200 with respect to the touch surface 111.
- the inclination angle ⁇ x is smaller than 90 °.
- a distribution of the magnitude S of the capacitance change caused by the touch input is shown as a contour line Lc2 in FIG.
- the contour line Lc2 is a figure that is asymmetric in the left-right direction (X direction). Specifically, the magnitude S becomes denser on the right side than the peak position Sp of the change in capacitance, while the magnitude S becomes sparser on the left side of the peak position Sp.
- positions B1 and B2 are positions where the magnitude of the detected change in capacitance matches the predetermined threshold value Sth.
- the X-direction coordinate Bx of the detected touch position is shifted to the left from the X-direction coordinate of the actual touch position RTp.
- the detected touch position varies depending on the tilt angle of the stylus pen 200 with respect to the touch surface 111.
- the reason is as follows.
- the capacitance of the stylus pen 200 is also changed by the conductor portion close to the touch surface 11 at the tip portion.
- the tilt angle of the stylus pen 200 changes, the magnitude of the capacitance generated between the touch panel and the conductor portion also changes.
- the distribution of the magnitude of the capacitance change due to the conductor portion also changes in accordance with the inclination angle of the stylus pen, and the distribution becomes more asymmetric as the inclination angle becomes larger.
- Patent Literature 1 discloses a stylus pen 100 shown in FIG.
- FIG. 18 is a diagram showing a stylus pen 100 according to Patent Document 1.
- the spherical member 101 is provided so that the spherical member 101 of the conductor is provided at the tip of the pen, and only the spherical member 101 is involved in the distribution of the magnitude of the change in capacitance.
- the pen tip portion 102 and the pen main body portion 103 in the vicinity of are made non-conductive.
- Patent Document 1 The advantages of the stylus pen 101 are described in Patent Document 1 as follows. Since the pen tip 101 of the stylus pen 100 is spherical, when the stylus pen 100 is tilted as shown in FIG. 18B, the grounded portion (touch position) of the pen tip 101 becomes the center of the conductor. . As a result, the distribution of the magnitude of the change in capacitance becomes symmetric with respect to the actual touch position, so that the touch position does not vary even when the stylus pen 100 is tilted.
- a spherical pen 101 tip is attached to a non-conductor pen main body, and in addition, a hand gripping the pen main body and the pen tip 101 are electrically connected to each other. It is necessary to provide a conductive wire 105 that connects the contact member 104 and the pen tip 101 provided in the section. This is problematic in terms of ease of processing. In order to facilitate processing, it is conceivable to process the tip of the conducting wire into a conical shape without providing the spherical member 101.
- the spherical nib 101 is sufficiently larger than the conductive wire 105, the influence of the conductive wire 105 on the distribution of the magnitude of the change in capacitance can be ignored. However, if the pen tip 101 is too large, the touch position detection interval of the touch panel becomes too wide. If the spherical pen tip 101 is made sufficiently small in order to narrow the detection interval, the influence of the conductive wire 105 on the distribution cannot be ignored, so that the problem that the distribution becomes asymmetric with respect to the actual touch position reoccurs.
- An object of the present invention is to provide an information input pen that can suppress variations in detected contact position or proximity position when the pen body is tilted even if the pen tip is sufficiently small.
- an information input pen for inputting information to a capacitive touch panel, A non-conductive pen body; A conductive nib, A conductive portion that is electrically connected to the pen tip and is disposed obliquely with respect to the length direction of the pen body,
- the inclination angle in the length direction of the conductive portion with respect to the touch surface of the touch panel is such that the contact position or proximity position of the pen tip on the touch surface and the pen
- the predetermined angle at which the difference from the center of gravity position in the distribution of the magnitude of the change in capacitance generated when the tip touches or approaches the touch surface is constant regardless of the location of the touch surface. It is said.
- Embodiment 1 of this invention It is a perspective view which shows the principal part structure of the touch input system which concerns on Embodiment 1 of this invention. It is a block which shows the principal part structure of the touch panel which comprises the touch input system which concerns on Embodiment 1 of this invention. It is a figure which shows the principal part structure of the stylus pen which comprises the touch input system which concerns on Embodiment 1 of this invention. In Embodiment 1 of this invention, it is a figure which shows the example of the relationship between the inclination-angle of a pen main body with respect to the touch surface of a touchscreen, and the inclination-angle of an electroconductive part. It is a figure explaining the problem at the time of inclining the conventional stylus pen 30 degrees with respect to the touch surface of a touch panel.
- FIG. 1 is a perspective view showing a main configuration of a touch input system 100 (information input system) according to the present embodiment.
- the touch input system 100 includes a stylus pen 1 (information input pen) and a capacitive touch panel 2.
- the user performs touch input (touch operation) on the touch panel 2 by bringing the stylus pen 1 into contact with or in proximity to the touch surface of the touch panel 2.
- the touch panel 2 is integrated with a display device (not shown), and the touch surface of the touch panel 2 is arranged on the display surface of the display device.
- the user can input information by touching a region where an object such as an operation button on the display surface of the display device is displayed.
- FIG. 2 is a block diagram illustrating a main configuration of the touch panel 2.
- the touch panel 2 includes a panel body 21 having a plurality of drive lines 22 and a plurality of sense lines 23, a drive line drive unit 24 for applying a drive signal Ds to the drive lines 22 of the panel body 21,
- the signal processing unit 30 receives the sense signal Ss generated by the application of the drive signal Ds from the sense line 23 and generates touch information ISp for the sense signal Ss.
- the signal processing unit 30 includes an amplification circuit 31, a signal selection unit 32, an A / D conversion unit 33, a decoding processing unit 34, and a touch position detection unit 35.
- the amplifier circuit 31 amplifies the sense signal Ss from the plurality of sense lines 23.
- the signal selection unit 32 sequentially selects the amplified sense signal ASs and outputs the selected amplified sense signal ASs.
- the A / D converter converts the amplified sense signal ASs after amplification into a digital signal DSs.
- the decoding processing unit 34 decodes the obtained digital signal DSs using a conversion signal for decoding based on the series signal used to generate the drive signal Ds, and the drive line 22 and the sense line in the panel body 21.
- the signal intensity Cd corresponding to the magnitude of the change in the capacitance at the intersection with 23 is acquired.
- the touch position detection unit 35 calculates the distribution of the magnitude of the capacitance change in the panel body 21 based on the signal intensity Cd, and the user touches the panel body 21 based on the barycentric position in the distribution.
- the touch position on the touch surface is detected by generating touch information ISp indicating the position.
- a plurality of drive lines 22 arranged in parallel with each other and a sense line 23 arranged in parallel with each other are arranged in a three-dimensional manner.
- a plurality of drive lines 22 and a plurality of sense lines 23 form an electrode pattern on the mesh. At least the intersection of each drive line 22 and each sense line 23 is insulated.
- a capacitance between the drive line 22 and the sense line 23 is generated at each intersection.
- the touch panel 2 detects the touch position (contact position) or proximity position of the indicator on the touch surface by measuring the magnitude of the change in capacitance.
- the touch panel 2 can detect the touch position or the proximity position at a point other than the intersection by measuring the distribution of the magnitude of the change in capacitance and calculating the center of gravity position of the distribution. .
- FIG. 3 is a diagram illustrating a main configuration of the stylus pen 1.
- the stylus pen 1 includes a pen body 10, a pen tip 12, and a conductive portion 13.
- the pen body 10 is made of a nonconductive material.
- both the nib 12 and the conductive portion 13 are made of a conductive material.
- the pen body 10 is formed with an inclined surface that is inclined by 30 ° with respect to the length direction of the stylus pen 1, and the conductive portion 13 is formed on the inclined surface.
- the conductive portion 13 is disposed obliquely with respect to the length direction of the pen body 10, and more specifically, is inclined by 30 ° with respect to the length direction of the pen body 10. In other words, the angle formed by the length direction of the stylus pen 1 and the length direction of the conductive portion 13 is 30 °.
- One end of the conductive portion 13 is electrically connected to the pen tip 12.
- a plurality of depressions 11 are formed in the pen body 10 where the stylus pen 1 is gripped. These recesses 11 have a shape that fits the user's finger when the user holds the stylus pen 1. When the user naturally holds the stylus pen 1 by fitting his / her finger to the plurality of depressions, the conductive portion 13 comes to the upper side (front side) of the stylus pen 1.
- a portion of the stylus pen 1 gripped by the user is provided with a conductor portion (not shown).
- the conductive portion 13 serves as a conductor that electrically connects the conductor portion and the pen tip 12 to ground the stylus pen 1 through the human body and move the capacitance in the touch panel 2 in the ground direction. Plays.
- This conductor portion is preferably provided in the recess 11.
- the pen tip 12 since the pen tip 12 is made smaller, the change in capacitance appearing on the touch panel 2 is almost caused by the conductor portion present at the tip of the stylus pen 1.
- the conductor present at the tip of the stylus pen 1 corresponds to the pen tip 12 and the conductive portion 13. Since the length of the conductive portion 13 is sufficiently larger than the pen tip 12, most of the influence on the distribution of the magnitude of the change in the measured capacitance is based on the inclination angle of the conductive portion 13 with respect to the touch surface. The influence occupies.
- the stylus pen 1 is inclined at a certain angle with respect to the touch surface of the touch panel 2 during use. Since the conductive portion 13 is inclined by 30 ° with respect to the length direction of the stylus pen 1, the inclination angle of the pen body 10 with respect to the touch surface is different from the inclination angle of the conductive portion 13.
- FIG. 4 is a diagram illustrating an example of the relationship between the tilt angle of the pen body 10 with respect to the touch surface and the tilt angle of the conductive portion 13.
- the stylus pen 1 is tilted such that the tilt angle of the pen body 10 with respect to the touch surface is 30 °.
- the inclination angle of the conductive portion 13 with respect to the touch surface is 60 °. That is, the conductive portion 13 is inclined by 30 ° with respect to the direction perpendicular to the touch surface.
- the stylus pen 1 is tilted so that the tilt angle of the pen body 10 with respect to the touch surface is 60 °.
- the inclination angle of the conductive portion 13 with respect to the touch surface is 90 °. That is, the conductive portion 13 is not inclined at all with respect to the direction perpendicular to the touch surface, in other words, stands upright with respect to the touch surface.
- the stylus pen 1 stands upright so that the tilt angle of the pen body with respect to the touch pen is 90 °.
- the inclination angle of the conductive portion 13 with respect to the touch surface is 60 °. Therefore, the conductive portion 13 is inclined by 30 ° with respect to the direction perpendicular to the touch surface.
- the inclination angle of the pen body 10 with respect to the touch surface is 30 ° to 90 °.
- the inclination angle of the conductive portion 13 with respect to the touch surface is 60 ° to 90 ° (60 ° or more and 90 ° or less).
- the inclination angle of the conductive portion 13 with respect to the direction perpendicular to the touch surface is 0 ° to 30 °.
- the conductive portion 13 When the conductive portion 13 is inclined at an angle in these ranges, as will be described in detail later, the actual touch position (or proximity position) of the pen tip 12 with respect to the touch surface and the magnitude of the measured capacitance change The difference from the center of gravity position in the distribution is constant regardless of the location of the touch surface. Thereby, since the influence of the conductive part 13 on the distribution of the magnitude of the change in capacitance can be suppressed, variations in the detected touch position (or proximity position) can be suppressed.
- the inclination angle of the stylus pen 1 with respect to the direction perpendicular to the touch surface is increased, the inclination angle of the conductive portion 13 with respect to the direction perpendicular to the touch surface is as small as 30 °. . Therefore, even when the stylus pen 1 is greatly inclined with respect to the direction perpendicular to the touch surface, variations in the detected touch position can be suppressed.
- the stylus pen 1 since the stylus pen 1 takes into account the influence of the conductive portion 13 on the distribution of the magnitude of the change in capacitance to be measured, unlike the stylus pen disclosed in Patent Document 1, the stylus pen 1 has the influence. There is no need to increase the nib 12 for reduction. Therefore, even if the pen tip 12 is sufficiently small, it is possible to suppress variations in detected touch detection when the stylus pen 1 is greatly tilted.
- the conventional stylus pen is a stylus pen in which the entire pen is formed of a conductor as shown in FIGS. 16 and 17, for example.
- FIG. 5 is a diagram for explaining a problem when the conventional stylus pen is tilted by 30 ° with respect to the touch surface of the touch panel 2.
- the user tilts the stylus pen 30 ° with respect to the touch surface of the touch panel 2 and traces the touch surface.
- the inclination angle of the stylus pen with respect to the direction perpendicular to the touch surface is 60 °.
- the touch detection position of the pen tip on the touch panel 2 varies, even if the pen tip moves linearly, the locus becomes jagged as shown in FIG.
- the capacitance of the touch panel is not constant within the touch surface, and there are minute differences depending on the location. For this reason, even if the range in which the capacitance changes appear in the two places is the same size, the distribution of the magnitude of the change in each place is not necessarily the same.
- the center of gravity position of the calculated distribution is the actual touch position on the touch surface. It will be far away from. Even if the pen tip moves on the touch surface, if the difference between the actual touch position and the calculated center of gravity position is constant, even if the touch input locus is displayed at the calculated center of gravity position, A display that reproduces the movement can be performed. However, because the detected distribution range changes depending on the location due to the influence of the capacitance difference of the touch panel depending on the location, the difference between the actual touch position of the pen tip and the calculated center of gravity position also changes depending on the location.
- FIG. 6 is a diagram for explaining a problem when the conventional stylus pen is tilted by 45 ° with respect to the touch surface of the touch panel 2.
- the inclination angle of the stylus pen with respect to the direction perpendicular to the touch surface is 45 °.
- the locus of the stylus pen is still jagged.
- FIG. 7 is a diagram illustrating a problem when the stylus pen 1 according to the present embodiment is inclined by 30 ° with respect to the touch surface of the touch panel 2.
- the user tilts the stylus pen 1 with respect to the touch surface of the touch panel 2 by 30 ° and traces the touch surface.
- the inclination angle of the stylus pen with respect to the direction perpendicular to the touch surface is 60 °.
- the conductive portion 13 is inclined by 60 ° with respect to the touch surface. That is, the inclination angle of the conductive portion 13 with respect to the direction perpendicular to the touch surface is 30 °.
- FIG. 7D shows the distribution of the magnitude of the change in capacitance in the range shown in FIG.
- FIGS. 7C and 7D the shape of the distribution is symmetric in the x direction. Since the distributions are contrasted, there is no displacement between the actual touch position and the center of gravity position of the detected distribution. As a result, the locus becomes smooth as shown in FIG.
- the range in which the capacitance change appears on the touch panel 2 becomes narrower.
- the difference between the calculated center of gravity position and the actual touch position becomes smaller. If the range in which the capacitance change appears is narrower, even if the distribution of the magnitude of the measured capacitance change changes due to the influence of the capacitance difference of the touch panel depending on the location, the calculated center of gravity position and The variation depending on the location of the difference from the actual touch position is negligible. This is substantially the same as the difference being constant regardless of the location of the touch surface.
- the difference between the calculated center of gravity position and the actual touch position of the pen tip 12 is constant regardless of the location of the touch surface. Even if the difference from the touch position differs depending on the location of the touch surface, the difference between the difference at one location and the difference at another location is less than the minimum recognition unit (minimum display unit) on the display surface. It is synonymous with.
- the capacitance is formed at a constant interval called a mesh interval.
- the touch panel measures the distribution of the magnitude of the change in capacitance and calculates the position of the center of gravity of the distribution
- the touch panel uses the spread of the distribution in a certain region in the touch surface for calculation.
- the capacitance at more intersections included in a certain region changes compared to a touch panel with a larger mesh interval. Therefore, in the touch panel having a smaller mesh interval, the center of gravity position can be calculated using more data, so that the influence of the capacitance difference at each location on the touch panel can be averaged.
- the error between the pen tip position and the gravity center position caused by the inclination of the stylus pen does not vary greatly even if the touched location changes.
- a touch panel with a larger mesh interval needs to obtain the position of the center of gravity using less data, and thus is greatly affected by the capacitance difference at each location on the touch panel.
- the difference between the pen tip position and the gravity center position generated by the inclination of the stylus pen varies greatly when the location of the touch position changes.
- FIG. 8 is a diagram showing the relationship between the tilt of the conventional stylus pen and the displacement of the center of gravity position with respect to the mesh interval of the touch panel.
- the horizontal axis represents the inclination of the stylus pen, and the horizontal axis represents the mesh interval.
- the distribution of the deviation of the center of gravity is represented as contour lines.
- the vertical axis represents a general range of mesh intervals in the touch panel corresponding to pen touch detection as a standard value. In other words, the mesh interval in the touch panel for pen touch detection is within the range indicated by the vertical axis in FIG.
- the dotted line in FIG. 8 shows the boundary line of the center-of-gravity position deviation that can guarantee the reproduction of the trajectory of the stylus pen on the touch panel.
- the reproduction of the trajectory of the stylus pen can be guaranteed under the condition on the left side of the dotted line.
- the reproduction of the trajectory of the stylus pen cannot be guaranteed.
- the mesh interval is small, the reproducibility of the stylus pen trajectory can be ensured when the inclination angle of the stylus pen with respect to the direction perpendicular to the touch surface is in the range of 0 ° to about 40 °.
- the mesh interval is large, the reproduction of the stylus pen trajectory can be ensured in the range where the inclination angle of the stylus pen with respect to the touch surface is 0 ° to less than 30 °.
- FIG. 8 shows the boundary line in the touch panel having the pattern shape and material that makes the noise worst, and the thickness of the cover glass in consideration of the influence of these noises.
- the inclination angle of the conductive portion 13 with respect to the direction perpendicular to the touch surface is 0 ° to 30 °. is there.
- the stylus pen is used regardless of the mesh interval. The reproduction of the trajectory can be guaranteed. Therefore, the stylus pen 1 according to the present embodiment can guarantee the reproduction of the locus of the touch position on the touch surface within the normal use range.
- the user's hand touches the conductor portion connected to the conductive portion 13, so that both the pen tip 12 and the conductive portion 13 are at the same potential (ground) as a human.
- the pen tip 12 and the conductive part 13 do not enter a floating state, the distribution of the magnitude of the change in capacitance becomes more stable. As a result, the touch position can be detected with higher accuracy.
- FIG. 9 is a perspective view showing a main configuration of the touch input system 100a according to the present embodiment.
- the touch input system 100a includes a stylus pen 1a (information input pen) and a capacitive touch panel 2a.
- FIG. 10 is a diagram showing a main configuration of the stylus pen 1a and the touch panel 2a constituting the touch input system 100a according to the present embodiment.
- the stylus pen 1a further includes a movable portion 14 and a fixed portion 15 in addition to the members included in the stylus pen 1 of the first embodiment.
- the touch panel 2a further includes a proximity detection unit 40 and a fixing instruction unit 41 in addition to the touch panel 2 of the first embodiment.
- FIG. 11 is a diagram showing a state of the stylus pen 1a before being detected by the touch panel 2a.
- the movable unit 14 moves a portion including the pen tip 12 and the conductive portion 13.
- the movable unit 14 determines that the inclination angle in the length direction of the conductive unit 13 with respect to the touch surface of the touch panel 2a is the contact position of the pen tip 12 on the touch surface and the pen.
- a predetermined difference in which the difference from the center of gravity position in the distribution of the magnitude of the change in capacitance generated when the tip 12 contacts the touch surface is constant regardless of the location of the touch surface (the contact position of the pen tip 12).
- the conductive portion 13 including the pen tip 12 and the conductive portion 13 is moved so as to be at an angle.
- the predetermined angle that satisfies this condition is, for example, 60 ° to 90 ° as described in the first embodiment.
- the pen tip 12 naturally faces the ground and the conductive portion 13 is parallel to the direction of gravity, regardless of the angle at which the pen body 10 is inclined. As described above, the location including the pen tip 12 and the conductive portion 13 moves. At this time, the conductive portion 13 stands upright with respect to the touch surface. That is, the angle formed by the length direction of the conductive portion 13 and the touch surface is 90 °.
- FIG. 12 is a diagram showing a state of the stylus pen 1a after being detected by the touch panel 2a.
- the proximity detector 40 in the touch panel 2a detects it and notifies the fixing instruction unit 41 of it.
- the stylus pen 1a and the touch panel 2a can communicate wirelessly, and the fixing instruction unit 41 receives a notification from the proximity detection unit 40 and notifies the stylus pen 1a that the pen tip 12 has been detected by the touch panel 2. Instructs to fix the pen tip 12.
- the fixing unit 15 receives this instruction. In response to this instruction, the fixing unit 15 instructs the movable unit 14 to fix the location including the pen tip 12 and the conductive unit 13. Thereby, the movable part 14 fixes the location including the pen tip 12 and the conductive part 13.
- the length direction of the conductive portion 13 is upright with respect to the touch surface of the touch panel 2a. That is, the inclination angle of the conductive portion 13 with respect to the touch surface is 90 °.
- the conductive portion 13 is fixed in a state where the inclination angle with respect to the touch surface is 90 °. Thereafter, while the user continues to hold the touch panel 2a, the stylus pen 1a may be more inclined with respect to the touch surface.
- the stylus pen 1a since the stylus pen 1a does not greatly tilt beyond 60 ° with respect to the direction perpendicular to the touch surface, the inclination angle of the conductive portion 13 with respect to the touch surface is the stylus pen 1a. Is kept in the range of 60 ° to 90 ° when used.
- the influence of the conductive portion 13 on the distribution of the magnitude of the change in capacitance generated by the pen tip 12 can be suppressed. .
- variations in the touch detection position can be suppressed when the stylus pen 1a is tilted.
- FIG. 13 is a perspective view showing a main configuration of the touch input system 100b according to the present embodiment.
- the touch input system 100b includes a stylus pen 1b (information input pen) and a capacitive touch panel 2b.
- FIG. 14 is a diagram showing a main configuration of the stylus pen 1b and the touch panel 2b constituting the touch input system 100b according to the present embodiment.
- the stylus pen 1b further includes a movable portion 14 and an angle adjustment portion 16 in addition to the members included in the stylus pen 1 of the first embodiment.
- the touch panel 2 b further includes a distribution deflection determination unit 42 and an angle adjustment instruction unit 43 in addition to the touch panel 2 of the first embodiment.
- the movable portion 14 can move the location including the pen tip 12 and the conductive portion 13 as in the second embodiment.
- the movable portion 14 includes a stepping motor and a control circuit, and adjusts the inclination angle of the portion including the pen tip 12 and the conductive portion 13 with respect to the pen body 10 by these functions.
- the touch position detection unit 35 outputs data indicating the distribution of the measured magnitude of the change in capacitance to the distribution deflection determination unit 42. Based on the input data, the distribution deflection determination unit 42 determines whether or not the distribution deviation exceeds a predetermined reference value, and notifies the angle adjustment instruction unit 43 of the result.
- the stylus pen 1b and the touch panel 2a can communicate wirelessly, and when the angle adjustment instruction unit 43 receives a notification that the deviation exceeds the reference value, the angle adjustment instruction unit 43 displays information indicating in which direction the distribution is biased in the x-axis. While transmitting to the stylus pen 1b, the stylus pen 1b is instructed to adjust the angle of the pen tip 12 to an angle that further reduces the distribution bias.
- the angle adjustment unit 16 receives this information and instruction.
- the angle adjusting unit 16 controls the stepping motor and the control circuit of the movable unit 14 to change the angles of the pen tip 12 and the conductive unit 13 to angles that further reduce the distribution bias.
- FIG. 15 is a diagram illustrating how the stylus pen 1b adjusts the inclination of the conductive portion 13 in accordance with the distribution of the magnitude of the change in capacitance.
- the stylus pen 1b is shown on the upper side of FIGS. 15A to 15C, and the distribution of the magnitude of the change in capacitance is shown on the lower side.
- the distribution deflection determination unit 42 determines that the distribution bias does not exceed a predetermined reference value, and notifies the angle adjustment instruction unit 43 to that effect.
- the angle adjustment instructing unit 43 does not instruct the stylus pen 1 b to adjust the angle, so the stylus pen 1 b does not adjust the inclination angle of the conductive unit 13.
- the length direction of the conductive portion 13 is inclined at a certain angle with respect to the touch surface.
- the distribution is biased in the + x direction on the x axis.
- the distribution deflection determination unit 42 determines that this deviation exceeds a predetermined reference value, and notifies the angle adjustment instruction unit 43 to that effect.
- the angle adjustment instructing unit 43 notifies that the distribution is biased in the + x direction and instructs the stylus pen 1b to adjust the angle of the conductive unit 13.
- the angle adjustment unit 16 adjusts the inclination angle of the conductive unit 13 to an angle that reduces the deflection in the + x direction of the distribution. Specifically, the movable part 14 is controlled so as to increase the inclination angle of the conductive part 13 with respect to the touch surface.
- the movable portion 14 is controlled by the angle adjusting portion 16 so that the inclination angle of the conductive portion 13 with respect to the direction perpendicular to the touch surface becomes 0 °. 13 is moved.
- the influence of the conductive portion 13 on the distribution can be completely suppressed, so that the uneven distribution can be eliminated.
- the distribution symmetry is maintained, so that variations in the detected touch position can be completely eliminated.
- the inclination angle of the conductive portion 13 with respect to the touch surface is the difference between the contact position of the pen tip 12 and the center of gravity position in the distribution, and the location of the touch surface (contact position of the pen tip 12). Regardless of the predetermined angle (60 ° to 90 °) which is constant regardless of the variation in the detected touch position, it can be suppressed. In other words, the distribution bias (asymmetry) when the inclination angle of the conductive portion 13 is within this range is sufficiently allowed without affecting the variation of the touch position.
- the angle adjusting unit 16 receives a notification from the touch panel 2b that the measured distribution is more than a certain deviation, the inclination angle of the conductive unit 13 with respect to the touch surface approaches an angle in the range of 60 ° to 90 °.
- the inclination angle of the conductive portion 13 may be adjusted by controlling the movable portion 14.
- the angle adjustment unit 16 adjusts the inclination angle of the conductive portion 13 until the bias data corresponding to the desired angle is received from the touch panel 2b. Can be repeated.
- the stylus pen 1b As described above, in the stylus pen 1b according to the present embodiment, as in the stylus pen 1 of the first embodiment, it is possible to suppress a bias in the distribution of the magnitude of the change in capacitance generated by the pen tip 12. . Thereby, even if the pen tip 12 is sufficiently small, it is possible to suppress variations in the touch detection position when the stylus pen 1b is tilted.
- An information input pen (stylus pen 1) according to aspect 1 of the present invention is An information input pen for inputting information to a capacitive touch panel, A non-conductive pen body; A conductive nib, A conductive portion that is electrically connected to the pen tip and is disposed obliquely with respect to the length direction of the pen body, When the pen tip is in contact with or close to the touch surface of the touch panel, the inclination angle in the length direction of the conductive portion with respect to the touch surface of the touch panel is such that the contact position or proximity position of the pen tip on the touch surface and the pen The predetermined angle at which the difference from the center of gravity position in the distribution of the magnitude of the change in capacitance generated when the tip touches or approaches the touch surface is constant regardless of the location of the touch surface. And
- the actual contact position or proximity position of the pen tip with respect to the touch surface and the distribution of the magnitude of the measured capacitance change The difference from the center of gravity is constant regardless of the location of the touch surface.
- the influence of the conductive part on the distribution of the magnitude of the change in capacitance to be measured is small, it is not necessary to enlarge the pen tip in order to reduce the influence. Therefore, even if the pen tip is sufficiently small, it is possible to suppress variations in the detected contact position or proximity position when the stylus pen is greatly inclined.
- An information input pen (stylus pen 1a) according to aspect 2 of the present invention is An information input pen for inputting information to a capacitive touch panel that detects the proximity of the information input pen, A non-conductive pen body; A conductive nib, A conductive portion electrically connected to the pen tip; When the proximity of the information input pen is not detected by the touch panel, the inclination angle in the length direction of the conductive portion with respect to the touch surface of the touch panel is determined by the contact position or proximity position of the pen tip on the touch surface and the pen tip.
- the conductive portion is set so that the difference from the center of gravity position in the distribution of the magnitude of the change in capacitance generated by contacting the touch surface is a predetermined angle that is constant regardless of the location of the touch surface.
- a moving part to move When the proximity of the information input pen is detected by the touch panel, a fixing unit that fixes the conductive unit is provided.
- the actual contact position or proximity position of the pen tip with respect to the touch surface, and the barycentric position in the distribution of the magnitude of the measured capacitance change The difference is constant regardless of the location of the touch surface.
- the influence of the conductive part on the distribution of the magnitude of the change in capacitance to be measured is small, it is not necessary to enlarge the pen tip in order to reduce the influence. Therefore, even if the pen tip is sufficiently small, it is possible to suppress variations in the detected contact position or proximity position when the stylus pen is greatly inclined.
- An information input pen (stylus pen 1b) according to aspect 3 of the present invention is An information input pen for inputting information to a capacitive touch panel that measures the distribution of the magnitude of the change in capacitance that occurs when the pen tip of the information input pen touches or approaches the touch surface.
- a non-conductive pen body A non-conductive pen body;
- a conductive nib A conductive portion electrically connected to the pen tip;
- the inclination angle of the conductive portion in the length direction with respect to the touch surface of the touch panel is determined based on the touch of the pen tip on the touch surface.
- a movable part that moves the conductive part so that a difference between the position or the proximity position and the center of gravity position in the distribution becomes closer to a predetermined angle that is constant regardless of the location of the touch surface.
- the angle of the conductive portion is adjusted so that the difference from the center of gravity position distribution in the distribution of the size is constant regardless of the location of the touch surface.
- the inclination angle of the information input pen with respect to the direction perpendicular to the touch surface is increased, the inclination angle of the conductive portion with respect to the direction perpendicular to the touch surface remains small. Therefore, even when the stylus pen is greatly inclined with respect to the direction perpendicular to the touch surface, variations in the detected contact position or proximity position can be suppressed.
- the influence of the conductive part on the distribution of the magnitude of the change in the capacitance to be measured is small, so there is no need to increase the pen tip in order to reduce the influence. Therefore, even if the pen tip is sufficiently small, it is possible to suppress variations in the detected contact position or proximity position when the stylus pen is greatly inclined.
- An information input pen is the above aspect 1 to 3,
- the predetermined angle is 60 ° or more and 90 ° or less.
- An information input system (touch input system 100) according to aspect 5 of the present invention includes: The information input pen according to any one of the above aspects 1 to 4 and a capacitive touch panel are provided.
- the present invention can be used as an information input pen for inputting information to a capacitive touch panel and an information input system including the information input pen and the capacitive touch panel.
Abstract
Description
静電容量方式のタッチパネルに情報を入力するための情報入力ペンであって、
非導電性のペン本体と、
導電性のペン先と、
上記ペン先に電気的に接続されており、かつ、上記ペン本体の長さ方向に対して斜めに配置されている導電部とを備えており、
上記ペン先が上記タッチパネルのタッチ面に接触または近接するとき、上記タッチパネルのタッチ面に対する上記導電部の長さ方向の傾斜角度が、上記タッチ面における上記ペン先の接触位置または近接位置と上記ペン先が上記タッチ面に接触または近接することによって発生する静電容量の変化の大きさの分布における重心位置との差が上記タッチ面の場所に関わらず一定になる所定の角度であることを特徴としている。
本発明に係る第1実施形態を図1~図8に基づき以下に説明する。
図1は、本実施形態に係るタッチ入力システム100(情報入力システム)の要部構成を示す斜視図である。この図に示すように、タッチ入力システム100は、スタイラスペン1(情報入力ペン)および静電容量方式のタッチパネル2によって構成されている。ユーザは、タッチパネル2のタッチ面に対してスタイラスペン1を接触または近接させることによって、タッチパネル2に対するタッチ入力(タッチ操作)を行う。タッチパネル2は表示装置(不図示)と一体化されており、表示装置の表示面上にタッチパネル2のタッチ面が重ねて配置されている。
図2は、タッチパネル2の要部構成を示すブロックである。この図に示すように、タッチパネル2は、複数のドライブライン22および複数のセンスライン23を有するパネル本体21と、パネル本体21のドライブライン22に駆動信号Dsを印加するドライブライン駆動部24と、この駆動信号Dsの印加によって生じたセンス信号Ssをセンスライン23から受信し、センス信号Ssに対するタッチ情報ISpを生成する信号処理部30とを備えている。
図3は、スタイラスペン1の要部構成を示す図である。図5の(a)に示すように、スタイラスペン1は、ペン本体10、ペン先12、および導電部13を備えている。ペン本体10は、非導電性の材料によって構成されている。一方、ペン先12および導電部13はいずれも導電性の材料によって構成されている。ペン本体10には、スタイラスペン1の長さ方向に対して30°傾斜する傾斜面が形成されており、導電部13はこの傾斜面に形成されている。これにより導電部13は、ペン本体10の長さ方向に対して斜めに配置されており、より具体的にはペン本体10の長さ方向に対して30°傾斜している。言い換えると、スタイラスペン1の長さ方向と導電部13の長さ方向とが成す角度は30°である。導電部13の一端はペン先12に電気的に接続されている。
従来のスタイラスペンをタッチ面の垂直方向に対して大きく傾けると、タッチパネル2におけるペン先の軌跡はギザギザになる問題が生じる。一方、本実施形態に係るスタイラスペン1ではそのような問題は生じない。その理由について、図5~7を参照して以下に説明する。なお、ここでいう従来のスタイラスペンとは、たとえば図16および図17に示すような、ペン全体が導体で構成されているスタイラスペンのことである。
図6は、従来のスタイラスペンをタッチパネル2のタッチ面に対して45°傾けた場合の問題を説明する図である。この図の例では、タッチ面と垂直な方向に対するスタイラスペンの傾斜角度は45°である。この場合、図6の(b)に示すように、依然としてスタイラスペンの軌跡はギザギザになる。
上述したように、分布における重心位置のずれは、タッチパネルにおいて検知される傾斜したスタイラスペンの導体部分の面積が、タッチパネルにおける静電容量の変化の大きさの分布の形状に影響を与えて当該分布を非対称にすることによって発生する。この問題の程度は、タッチパネルにおける静電容量のメッシュ間隔に応じて異なる。
本発明に係る第2実施形態を図9~図12に基づき以下に説明する。
本発明に係る第3実施形態を図13~図15に基づき以下に説明する。
本発明の態様1に係る情報入力ペン(スタイラスペン1)は、
静電容量方式のタッチパネルに情報を入力するための情報入力ペンであって、
非導電性のペン本体と、
導電性のペン先と、
上記ペン先に電気的に接続されており、かつ、上記ペン本体の長さ方向に対して斜めに配置されている導電部とを備えており、
上記ペン先が上記タッチパネルのタッチ面に接触または近接するとき、上記タッチパネルのタッチ面に対する上記導電部の長さ方向の傾斜角度が、上記タッチ面における上記ペン先の接触位置または近接位置と上記ペン先が上記タッチ面に接触または近接することによって発生する静電容量の変化の大きさの分布における重心位置との差が上記タッチ面の場所に関わらず一定になる所定の角度であることを特徴とする。
情報入力ペンの近接を検知する静電容量方式のタッチパネルに情報を入力するための情報入力ペンであって、
非導電性のペン本体と、
導電性のペン先と、
上記ペン先に電気的に接続されている導電部と、
上記情報入力ペンの近接が上記タッチパネルによって検知されないとき、上記タッチパネルのタッチ面に対する上記導電部の長さ方向の傾斜角度が、上記タッチ面における上記ペン先の接触位置または近接位置と上記ペン先が上記タッチ面に接触することによって発生する静電容量の変化の大きさの分布における重心位置との差が上記タッチ面の場所に関わらず一定になる所定の角度になるように、上記導電部を動かす可動部と、
上記情報入力ペンの近接が上記タッチパネルによって検知されたとき、上記導電部を固定する固定部とを備えていることを特徴としている。
情報入力ペンのペン先がタッチ面に接触または近接することによって発生する静電容量の変化の大きさの分布を測定する静電容量方式のタッチパネルに情報を入力するための情報入力ペンであって、
非導電性のペン本体と、
導電性のペン先と、
上記ペン先に電気的に接続されている導電部と、
測定された上記分布に一定以上の偏りがある旨の通知を上記タッチパネルから受けたとき、上記タッチパネルのタッチ面に対する上記導電部の長さ方向の傾斜角度を、上記タッチ面における上記ペン先の接触位置または近接位置と上記分布における重心位置との差が上記タッチ面の場所に関わらず一定になる所定の角度により近づけるように、上記導電部を動かす可動部とを備えていることを特徴としている。
上記所定の角度は、60°以上かつ90°以下であることを特徴としている。
上記態様1~4のいずれかに係る情報入力ペンと、静電容量のタッチパネルとを備えていることを特徴としている。
2,2a,2b タッチパネル
10 ペン本体
11 窪み
12 ペン先
13 導電部
14 可動部
15 固定部
40 近接検知部
41 固定指示部
42 分布偏向判定部
43 角度調整指示部
100,100a、100b タッチ入力システム(情報入力システム)
Claims (5)
- 静電容量方式のタッチパネルに情報を入力するための情報入力ペンであって、
非導電性のペン本体と、
導電性のペン先と、
上記ペン先に電気的に接続されており、かつ、上記ペン本体の長さ方向に対して斜めに配置されている導電部とを備えており、
上記ペン先が上記タッチパネルのタッチ面に接触または近接するとき、上記タッチパネルのタッチ面に対する上記導電部の長さ方向の傾斜角度が、上記タッチ面における上記ペン先の接触位置または近接位置と上記ペン先が上記タッチ面に接触または近接することによって発生する静電容量の変化の大きさの分布における重心位置との差が上記タッチ面の場所に関わらず一定になる所定の角度であることを特徴とする情報入力ペン。 - 情報入力ペンの接触または近接を検知する静電容量方式のタッチパネルに情報を入力するための情報入力ペンであって、
非導電性のペン本体と、
導電性のペン先と、
上記ペン先に電気的に接続されている導電部と、
上記情報入力ペンの接触または近接が上記タッチパネルによって検知されないとき、上記タッチパネルのタッチ面に対する上記導電部の長さ方向の傾斜角度が、上記タッチ面における上記ペン先の接触位置または近接位置と上記ペン先が上記タッチ面に接触または近接することによって発生する静電容量の変化の大きさの分布における重心位置との差が上記タッチ面の場所に関わらず一定になる所定の角度になるように、上記導電部を動かす可動部と、
上記情報入力ペンの近接が上記タッチパネルによって検知されたとき、上記導電部を固定する固定部とを備えていることを特徴とする情報入力ペン。 - 情報入力ペンのペン先がタッチ面に接触または近接することによって発生する静電容量の変化の大きさの分布を測定する静電容量方式のタッチパネルに情報を入力するための情報入力ペンであって、
非導電性のペン本体と、
導電性のペン先と、
上記ペン先に電気的に接続されている導電部と、
測定された上記分布に一定以上の偏りがある旨の通知を上記タッチパネルから受けたとき、上記タッチパネルのタッチ面に対する上記導電部の長さ方向の傾斜角度を、上記タッチ面における上記ペン先の接触位置または近接位置と上記分布における重心位置との差が上記タッチ面の場所に関わらず一定になる所定の角度により近づけるように、上記導電部を動かす可動部とを備えていることを特徴とする情報入力ペン。 - 上記所定の角度は、60°以上かつ90°以下であることを特徴とする請求項1~3のいずれか1項に記載の情報入力ペン。
- 請求項1~4のいずれか1項に記載の情報入力ペンと、静電容量のタッチパネルとを備えていることを特徴とする情報入力ペン。
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JP2016551663A JP6144436B2 (ja) | 2014-10-03 | 2015-08-31 | 情報入力ペン |
US15/515,967 US20170300138A1 (en) | 2014-10-03 | 2015-08-31 | Information input pen |
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JP2019082988A (ja) * | 2017-10-27 | 2019-05-30 | 株式会社 ハイディープHiDeep Inc. | スタイラスペンおよびその製造方法 |
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KR102468750B1 (ko) * | 2017-12-29 | 2022-11-18 | 엘지디스플레이 주식회사 | 터치표시장치, 터치시스템, 터치구동회로, 펜 및 펜 센싱 방법 |
US11962711B2 (en) * | 2020-11-10 | 2024-04-16 | Samsung Electronics Co., Ltd. | Electronic device including antenna and stylus pen |
US11614825B2 (en) * | 2021-04-20 | 2023-03-28 | Microsoft Technology Licensing, Llc | Touch status indication for active stylus |
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JPH08272893A (ja) * | 1995-03-31 | 1996-10-18 | Pentel Kk | バーコード読み取り及び座標信号検出兼用ペン |
JP2011210229A (ja) * | 2010-03-30 | 2011-10-20 | Shenzhen Futaihong Precision Industrial Co Ltd | 容量式タッチペン |
JP2013045259A (ja) * | 2011-08-23 | 2013-03-04 | Metamoji Corp | 入力ペン及びペン先 |
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2015
- 2015-08-31 JP JP2016551663A patent/JP6144436B2/ja active Active
- 2015-08-31 WO PCT/JP2015/074738 patent/WO2016052051A1/ja active Application Filing
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JPH08272893A (ja) * | 1995-03-31 | 1996-10-18 | Pentel Kk | バーコード読み取り及び座標信号検出兼用ペン |
JP2011210229A (ja) * | 2010-03-30 | 2011-10-20 | Shenzhen Futaihong Precision Industrial Co Ltd | 容量式タッチペン |
JP2013045259A (ja) * | 2011-08-23 | 2013-03-04 | Metamoji Corp | 入力ペン及びペン先 |
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JP2019082988A (ja) * | 2017-10-27 | 2019-05-30 | 株式会社 ハイディープHiDeep Inc. | スタイラスペンおよびその製造方法 |
US10845896B2 (en) | 2017-10-27 | 2020-11-24 | Hideep Inc. | Stylus pen and method for manufacturing the same |
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