Touch input device

Abstract

A touch input device according to an embodiment of the present invention, as a touch input device for driving a stylus including a resonance circuit section and detecting a pen signal from the stylus, comprises: a cover layer; a sensing portion disposed below the cover layer and including at least one pattern for driving the stylus and detecting the pen signal; the display part is arranged below the sensing part; and a shield portion provided below the display portion, the shield portion having a magnetic permeability and a thickness such that a rate of change in an inductance value of the resonance circuit portion is-10% to + 10% of a reference inductance value.

Description

Technical Field

[0001] The present invention relates to a touch input device, and in particular to a touch input device capable of interacting with a stylus pen and minimizing the attenuation of a pen signal received from the stylus pen, and minimizing the change in the inductance value of a resonant circuit portion of the stylus pen caused by approaching or tilting operations of the stylus pen. Background Art

[0002] Various touch input devices such as mobile phones, smart phones, laptop computers, digital broadcast terminals, personal digital assistants (PDAs), portable multimedia players (PMPs), navigation, touch-screen tablet computers (slate PCs), tablet PCs, ultrabooks, and wearable devices are equipped with touch sensors.

[0003] In such a touch input device, the touch sensor may be located on a display panel displaying an image, or may be located in a portion of the touch input device. When a user interacts with the touch input device by touching the touch sensor, the touch input device may provide the user with an intuitive user interface.

[0004] Users can use the stylus for precise touch input. Depending on whether there are batteries and electronic components inside, the stylus can be divided into active stylus and passive stylus.

[0005] Active styluses have superior basic performance over passive styluses and have the advantage of providing additional functionality (pen pressure, hover, buttons), but the pens themselves are expensive and require a power source to charge the battery, so they don't have many practical uses except for some advanced users.

[0006] The advantages of a passive stylus are that it is cheaper than an active stylus and does not require a battery, but its disadvantage is that it is difficult to recognize accurate touches compared to an active stylus. However, recently, in order to realize a passive stylus capable of accurate touch recognition, electromagnetic resonance (EMR) and capacitive resonance technologies, which are inductive resonance methods, have been proposed. Summary of the invention

[0007] Technical problem to be solved by the invention

[0008] The problem to be solved by the present invention is to provide a touch input device capable of minimizing the attenuation of a pen signal received from a stylus pen and minimizing the change in the inductance value of a resonance circuit portion of the stylus pen due to an approach or tilt operation of the stylus pen.

[0009] Furthermore, a touch input device is provided, which can clearly distinguish between an approach or tilt operation of a stylus pen and a pen pressure operation of the stylus pen.

[0010] Furthermore, a touch input device is provided which can increase the magnitude of a pen signal emitted from a stylus pen while maintaining the rate of change of the inductance value of a resonance circuit portion of the stylus pen.

[0011] Technical solutions to solve problems

[0012] According to an embodiment of the present invention, a device is a touch input device for driving a stylus including a resonant circuit unit and detecting a pen signal from the stylus, comprising: a covering layer; a sensing unit, disposed below the covering layer and comprising at least one pattern for driving the stylus and detecting the pen signal; a display unit, disposed below the sensing unit; and a shielding unit, disposed below the display unit, the shielding unit having a magnetic permeability and thickness such that the rate of change of the inductance value of the resonant circuit unit is -10% to +10% of a reference inductance value.

[0013] The magnetic permeability of the shielding portion is greater than or equal to 10 and less than or equal to 300.

[0014] The shielding portion has a thickness of not less than 10 μm and not more than 300 μm.

[0015] Wherein, the shielding part includes a magnetic field shielding sheet and a conductive layer arranged under the magnetic field shielding sheet, and the increase in the inductance value of the resonant circuit part caused by the magnetic field shielding sheet can be the same as the decrease in the inductance value of the resonant circuit part caused by the conductive layer, or the sum of the increase and the decrease is -10% to +10% of the reference inductance value.

[0016] The inductance value of the resonant circuit portion when the stylus pen is moved upward from the touch surface of the touch input device to a predetermined height may be -10% to +10% of the inductance value of the resonant circuit portion when the stylus pen is located on the touch surface.

[0017] The inductance value of the resonant circuit portion when the stylus pen is vertically placed on the touch surface of the touch input device and then tilted at a predetermined angle may be -10% to +10% of the inductance value of the resonant circuit portion when the stylus pen is vertically placed on the touch surface.

[0018] The shielding portion includes a magnetic field shielding sheet and a conductive layer disposed below the magnetic field shielding sheet, and the conductive layer includes at least one slit.

[0019] The slit has a shape extending long from one side edge of the conductive layer toward the inner side of the conductive layer.

[0020] The slit has a dotted line shape formed along the transverse direction and / or the longitudinal direction of the conductive layer.

[0021] According to another embodiment of the present invention, a device is a touch input device for driving a stylus including a resonant circuit portion and detecting a pen signal from the stylus, comprising: a covering layer; a sensing portion, disposed below the covering layer, comprising at least one pattern for driving the stylus and detecting the pen signal; a display portion, disposed below the sensing portion; a magnetic field shielding sheet, disposed below the display portion; and a conductive layer, disposed below the magnetic field shielding sheet, the conductive layer comprising at least one slit.

[0022] The slit has a shape extending long from one side edge of the conductive layer toward the inner side of the conductive layer.

[0023] The slit has a dotted line shape formed along the transverse direction and / or the longitudinal direction of the conductive layer.

[0024] The method further includes: a frame, which is arranged below the conductive layer and is made of a conductive material. The frame has an opening corresponding to at least a part of the slit of the conductive layer.

[0025] Wherein, the frame further includes a filling component made of a non-conductive material arranged in the opening portion of the frame.

[0026] Effects of the Invention

[0027] The touch input device according to the embodiment of the present invention has the advantages of being able to minimize attenuation of a pen signal received from a stylus pen and minimize changes in the inductance value of a resonance circuit portion of the stylus pen due to approach or tilt operations of the stylus pen.

[0028] Furthermore, there is an advantage in that an approach or tilt operation of the stylus pen and a pressure operation of the stylus pen can be clearly distinguished.

[0029] Furthermore, there is an advantage in that the magnitude of the pen signal emitted from the stylus pen can be increased while maintaining the rate of change of the inductance value of the resonance circuit portion of the stylus pen.

[0030] The applicable additional scope of the present disclosure will be more clearly understood through the detailed description below. However, various changes and modifications within the scope of the present disclosure are obvious to those skilled in the art, and therefore the detailed description of the present disclosure and specific embodiments such as preferred embodiments (e.g., preferred embodiments) can only be understood as examples. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A conceptual diagram showing a stylus and touch input device;

[0032] Figure 2 is a partial cross-sectional view of a touch input device according to an embodiment of the present invention;

[0033] Figure 3 is a partial cross-sectional view of a touch input device according to another embodiment of the present invention;

[0034] Figure 4 1 is a diagram for explaining a problem that the amplitude of a pen signal emitted from a stylus pen is reduced in a shielding structure of a conventional touch input device;

[0035] Figure 5 Based on Figure 2 and Figure 3 A cross-sectional view of an example of the shielding portion 400 is shown;

[0036] Figure 6 1 is a diagram for explaining a change in the resonant frequency of a pen signal of the stylus pen due to a proximity operation of the stylus pen 1 on the shielding portion 400 of the touch input device according to the embodiment of the present invention;

[0037] Figure 7 1 is a diagram for explaining a change in the resonance frequency of a pen signal of the stylus pen due to a tilting operation of the stylus pen 1 on the shielding part 400 of the touch input device according to the embodiment of the present invention;

[0038] Figure 8 FIG. 1 is a diagram for explaining that the resonance frequency of the pen signal changes due to the approach operation of the stylus pen 1 on the magnetic field shielding sheet 410 when only the magnetic field shielding sheet 410 is present;

[0039] Fig. 9 FIG. 1 is a diagram for explaining that the resonant frequency of the pen signal changes due to the tilting operation of the stylus pen 1 on the magnetic field shielding sheet 410 ;

[0040] Fig.10 FIG. 1 is a diagram for explaining that the resonant frequency of the pen signal changes when the stylus pen 1 approaches the conductive layer 450 in the presence of the conductive layer 450 ;

[0041] Fig.11is a diagram for explaining that the resonance frequency of the pen signal changes due to the tilting operation of the stylus pen 1 on the conductive layer 450;

[0042] Fig.12 (a) and (b) are used for illustration Figure 2 or Figure 3 FIG. 4 shows modified examples 400 ′, 400 ″ of the shielding layer 400 ;

[0043] Fig.13 To also include Fig.12 A cross-sectional view of a touch input device of (a) or (b) a shielding layer 400', 400" and a frame 700 below the shielding layer 400', 400";

[0044] Fig.14 is a cross-sectional view of a touch input device according to another embodiment of the present invention;

[0045] Fig.15 is a cross-sectional view of a touch input device according to another embodiment of the present invention;

[0046] Fig.16 is a schematic structural diagram of a sensor unit 100 of a touch input device according to a first embodiment of the present invention,

[0047] Fig.17 For a brief display Fig.16 A structural diagram of an example of the sensor unit 100 shown;

[0048] Fig.18 For a brief display Fig.16 A structural diagram of another example of the sensor unit 100 shown;

[0049] Fig.19 A schematic structural diagram of a sensing unit 100' of a touch input device according to a second embodiment of the present invention;

[0050] Fig. 20 For a brief display Fig.19 A structural diagram of an example of a sensor portion 100' is shown;

[0051] Fig.21 For a brief display Fig.19 A structural diagram of another example of the sensor portion 100' shown;

[0052] Fig. 22 For a brief display Fig.19 A structural diagram of another example of the sensor portion 100' shown;

[0053] Fig.23 For a brief display Fig.19 A structural diagram of another example of the sensor portion 100' shown;

[0054] Fig.24 for Fig. 20 A detailed diagram of the touch input device shown;

[0055] Fig.25 For illustration Fig.24 A diagram showing a method in which the control unit 300 applies a pen driving signal for driving a stylus pen to a plurality of second patterns 102A;

[0056] Fig.26 (a) to (f) are for brief description Fig.24 FIG. 1 is a diagram showing an operation principle of a touch input device in a stylus sensing mode;

[0057] Fig. 27 for Fig.21 A detailed diagram of the touch input device shown;

[0058] Fig.28 for Fig. 22 A detailed diagram of the touch input device shown;

[0059] Fig.29 for Fig.23 A detailed diagram of the touch input device shown;

[0060] Fig.30 A diagram showing a sensor portion according to a modified example that can replace the sensor portion according to the aforementioned embodiments;

[0061] Fig.31 for Fig.30 A variation of the sensing portion shown;

[0062] Fig.32 A modified example of the sensor unit according to the aforementioned multiple embodiments;

[0063] Fig.33 A modified example of the sensor unit according to the aforementioned multiple embodiments;

[0064] Fig.34 A modified example of the sensor unit according to the aforementioned multiple embodiments;

[0065] Fig.35 A modified example of the sensor unit according to the aforementioned multiple embodiments;

[0066] Fig.36 A modified example of the sensor unit according to the aforementioned multiple embodiments;

[0067] Fig.37 A modified example of the sensor unit according to the aforementioned multiple embodiments;

[0068] Fig.38 A modified example of the sensor unit according to the aforementioned multiple embodiments;

[0069] Fig.39 A modified example of the sensor unit according to the aforementioned multiple embodiments;

[0070] Fig.40 For illustration Fig.33 FIG. 1 is a diagram showing a first variation of the fifth pattern 105;

[0071] Fig.41 for Fig.40 Variations of ;

[0072] Fig.42 For illustration Fig.40 FIG. 1 is a diagram showing a modified example of the fifth pattern 105 ′;

[0073] Fig.43 for Fig.42 Variations of ;

[0074] Fig.44 and Fig.45 For illustration Fig.34 or Fig.35 FIG. 2 is a diagram showing a modified example of the third pattern 103 and the fourth pattern 104 in the sensor portion shown. DETAILED DESCRIPTION

[0075] Below, various embodiments of the present invention are described with reference to the accompanying drawings. However, this is not intended to limit the technology described herein to specific embodiments, and should be understood to include various modifications, equivalents and / or alternatives of the embodiments herein. With respect to the description of the accompanying drawings, similar reference numerals may be used for similar components.

[0076] In addition, for the sake of convenience of explanation, the size and thickness of each component shown in the drawings are arbitrarily shown, so the present invention is not necessarily limited to the content shown. In the drawings, the thickness is magnified to clearly show each layer and region. And in the drawings, for the sake of convenience of explanation, the thickness of some layers and regions is exaggerated.

[0077] Furthermore, when a part of a layer, film, region, plate, etc. is referred to as being "on" or "over" another part, this includes not only the case where it is "directly over" another part, but also the case where there are other parts in between. Conversely, when a part is "directly over" another part, it means that there are no other parts in between. In addition, "on" or "over" a reference part means being above or below the reference part, and does not necessarily mean being "on" or "over" in a direction opposite to gravity.

[0078] Herein, expressions such as “having”, “having”, “including” or “comprising” refer to the existence of corresponding features (eg, numerical values, functions, operations or components such as parts), and do not exclude the existence of additional features.

[0079] Herein, expressions such as "A or B", "at least one of A or / and B", or "one or more of A or / and B" include all possible combinations of the listed items. For example, "A or B", "at least one of A and B", or "at least one of A or B" may mean (1) including at least one A; (2) including at least one B, or (3) including all cases of at least one A and at least one B.

[0080] As used herein, expressions such as "1st", "2nd", "first", or "second" may describe various components in any order and / or importance, are used only to distinguish one component from another, and are not intended to limit the corresponding components. For example, a first user device and a second user device may represent different user devices, regardless of order or importance. For example, a first component may be renamed as a second component, and similarly, a second component may be renamed as a first component without departing from the scope of the claims described herein.

[0081] When it is stated that a component (e.g., a first component) is “(operatively or communicatively) coupled with / to” or “connected to” another component (e.g., a second component), the component may be directly connected to the other component or connected through another component (e.g., a third component). On the other hand, when a component (e.g., a first component) is referred to as being “directly coupled” or “directly connected” to another component (e.g., a second component), it may be understood that no other component (e.g., a third component) exists between the component and the other component.

[0082] For example, the expression "configured to" used in this document can be used interchangeably with "suitable for", "having the capacity to", "designed to", "adapted to", "made to", or "capable of". The term "configured to" does not necessarily mean "specifically designed to" in terms of hardware. On the contrary, in some cases, the expression "a device configured to" means that the device is "capable of working with other devices or components. For example, the phrase "a processor configured to perform A, B, and C" refers to a generic-purpose processor (e.g., a CPU or application processor) that performs the corresponding operations by executing a processor dedicated to performing the corresponding operations (e.g., an embedded processor), or one or more software programs stored in a memory.

[0083] The terms used herein are only used to illustrate specific embodiments and may not be intended to limit the scope of other embodiments. Unless the context clearly states otherwise, singular expressions include plural expressions. The terms used herein, including technical or scientific terms, have the same meanings as those generally understood by those of ordinary skill in the technical field described herein. Among the terms used in this article, the terms generally defined in the dictionary may be interpreted as having the same or similar meanings as they have in the context of the relevant technology, and unless clearly defined in this document, should not be interpreted in an idealistic or overly formal manner. In some cases, even the terms defined in this article cannot be interpreted as excluding the embodiments of this article.

[0084] The touch input device according to various embodiments of the present invention includes, for example, at least one of a smart phone, a tablet personal computer, a mobile phone, a video phone, an e-book reader, a laptop personal computer, a netbook computer, a mobile medical device, a camera, or a wearable device. According to various embodiments, the wearable device may be at least one of an accessory type (e.g., a watch, a ring, a bracelet, an anklet, a necklace, glasses, contact lenses, or a head-mounted-device (HMD)), a type integrated into fabric or clothing (e.g., electronic clothing), a body attachment type (e.g., a skin pad or a tattoo), or a bio-implantation type (e.g., an implantable circuit).

[0085] Hereinafter, a touch input device according to an embodiment will be explained with reference to necessary drawings.

[0086] Figure 1 A conceptual diagram showing a pen and touch input system including a stylus pen and a touch input device.

[0087] refer to Figure 1 , the stylus pen 1 may receive a first signal generated by the touch input device 2, and send or receive a second signal to the touch input device 2. The second signal may be named a pen signal.

[0088] like Figure 2 and Figure 3 As shown, the stylus pen 1 includes a resonant circuit section 13. The resonant circuit section 13 can resonate by the first signal from the touch input device 2. The resonant circuit section 13 includes an inductor section having a predetermined inductance value and a capacitor section interconnected with the inductor section and having a predetermined capacitance value. Such a resonant circuit section 13 includes an LC resonant circuit.

[0089] The inductor unit includes a magnetic core and at least one coil. For example, the magnetic core includes a ferrite magnetic core. The coil may be in a shape surrounding the magnetic core. The inductance of the inductor unit is proportional to the magnetic coefficient (μ), the cross-sectional area (S) of the coil (131b), and the square of the number of turns (N), and is inversely proportional to the length l of the coil, that is, L=μSN 2 / l. The capacitor unit includes a plurality of capacitors connected in series and / or in parallel. Each capacitor has a different capacitance and can be trimmed during the manufacturing process.

[0090] The stylus pen 1 further includes a tip and a housing for accommodating the tip and the resonant circuit unit. A portion of the tip is exposed to the outside through an opening provided in the housing, but is not limited thereto. For example, the tip can provide a user with a visual effect of the touch position of the stylus pen 1.

[0091] The housing can accommodate multiple components of the stylus pen 1 in the empty space inside. The housing has a cylindrical shape, a polygonal column, a column shape with at least a portion of the column being curved, an entasis column shape, a frustum of a pyramid shape, a circular truncated cone shape, etc., but is not limited thereto.

[0092] For example, the housing may contain the pen tip and the resonant circuit unit 13 in an empty space inside. Also, the housing may contain a portion of the pen tip in an empty space inside. The rest of the pen tip may be exposed to the outside of the housing, but is not limited thereto.

[0093] The touch input device 2 includes at least one of a portable communication device (eg, a smart phone, a tablet), a computing device, a portable multimedia device, a portable medical device, a wearable device, or a household appliance. Furthermore, the touch input device 2 can be a flexible device or a flexible display device.

[0094] The touch input device 2 can generate a first signal for driving the stylus pen 1 and detect a second signal (or, pen signal) emitted from the stylus pen 1. The touch input device 2 can sense or detect the position of the stylus pen 1 by detecting the second signal.

[0095] The first signal includes a signal (e.g., a sine wave, a square wave, etc.) having a frequency corresponding to the resonant frequency of the resonant circuit unit 13. The resonant frequency depends on the design value of the resonant circuit unit of the stylus pen 1. In order to achieve resonance, the resonant frequency of the resonant circuit unit and the frequency of the first signal of the touch input device 2 must be the same or very similar. The second signal is generated by the resonance of the resonant circuit unit 13.

[0096] refer to Figure 2 and Figure 3 , an embodiment of the touch input device 2 is described in detail.

[0097] Figure 2 FIG. 4 is a partial cross-sectional view of a touch input device according to an embodiment of the present invention.

[0098] refer to Figure 2According to an embodiment of the present invention, a touch input device includes a cover layer 150, a display portion 200, a digitizer 300, and a shielding portion 400. The touch input device may further include at least one electronic component 500 disposed below the shielding portion 400 and a substrate 600 on which the electronic component 500 is mounted.

[0099] The cover layer 150 may be disposed on the display unit 200 and may be made of a transparent material. The upper surface of the cover layer 150 may directly contact the tip of the stylus pen 1 .

[0100] The display unit 200 is disposed under the cover layer 150 and provides predetermined information in a visual manner according to the control of the control unit in the touch input device. For example, the display unit 200 may be an LCD module or an OLED module.

[0101] Although not shown in the drawings, a touch sensor capable of sensing the position of an object such as a finger may be provided between the cover layer 150 and the display unit 200 or inside the display unit 200. The touch sensor may be a capacitive touch sensor, but is not limited thereto, and may also be various types of touch sensors such as a resistive touch sensor.

[0102] The digitizer 300 is disposed below the display unit 200 . The digitizer 300 can send a first signal for resonating the resonant circuit unit 13 of the stylus pen 1 and receive a second signal from the stylus pen 1 according to the control of the control unit.

[0103] The shielding part 400 can block the magnetic field to prevent the electronic component 500 from being affected by the magnetic field. Also, the shielding part 400 can diffuse the heat emitted from the electronic component 500 and block electromagnetic waves (EMI) from the electronic component 500.

[0104] The electronic components 500 include a battery, a processor, a sensor, and a digital or analog circuit to operate the touch input device or perform a specific function.

[0105] Figure 3 FIG. 4 is a partial cross-sectional view of a touch input device according to another embodiment of the present invention.

[0106] refer to Figure 3 According to another embodiment of the present invention, a touch input device includes a cover layer 150, a sensing portion 100, a display portion 200, and a shielding portion 400. The touch input device may further include at least one electronic component 500 disposed below the shielding portion 400 and a substrate 600 on which the electronic component 500 is mounted.

[0107] The cover layer 150, the display portion 200 and the shielding portion 400 are Figure 2The cover layer 150 , the display portion 200 and the shielding portion 400 are the same, so the detailed description may refer to the above contents.

[0108] The sensing portion 100 is disposed between the cover layer 150 and the display portion 200. The sensing portion 100 can sense the position of an object such as a finger, generate a first signal (or a pen driving signal) for resonating the resonant circuit portion 13 of the stylus pen 1, and receive a second signal (or a pen signal) from the stylus pen 1. Figures 16 to 45 The sensor unit 100 capable of performing these various functions will be described in detail.

[0109] Although not shown in a separate figure, the touch input device may further include a control unit (not shown) for controlling the operation of the sensing unit 100, and the control unit (not shown) may be electrically connected to the sensing unit 100 and disposed inside the touch input device. The control unit (not shown) may be implemented as an integrated circuit (IC). The control unit (not shown) may also simultaneously perform the function of controlling the display unit 200 and the function of controlling the electronic component 500 inside the touch input device.

[0110] refer to Figure 2 and Figure 3 , the touch input device according to the embodiment of the present invention includes a shielding part 400. Before describing the shielding part 400, the problems of the shielding structure used in the conventional touch input device are described.

[0111] Figure 4 For explaining the pen signal (V pen ) is a diagram illustrating the problem of reducing the amplitude of .

[0112] The shielding structure of a conventional touch input device is composed of a magnetic field shielding sheet and a conductive layer, wherein the magnetic field shielding sheet is arranged on the conductive layer.

[0113] Figure 4 (a) shows the pen signal (V pen ) (the size of the reference pen signal), Figure 4 (b) shows the pen signal (V) emitted from the resonant circuit portion 13 of the stylus pen 1 when only the magnetic field shielding sheet exists in the shielding structure of the conventional touch input device. pen ), Figure 4 (c) shows the pen signal (V) emitted from the resonant circuit portion 13 of the stylus pen 1 when only the conductive layer exists in the shielding structure of the conventional touch input device. pen )'s relative size, Figure 4(d) shows the pen signal (V) emitted from the resonant circuit portion 13 of the stylus pen 1 in the shielding structure of the conventional touch input device. pen )’s relative size.

[0114] refer to Figure 4 (b), when the shielding structure is composed only of magnetic field shielding sheets, the pen signal (V pen ) and the case without shielding structure ( Figure 4 This is because the inductance (L) value of the resonance circuit unit 13 increases due to the magnetic field shielding sheet, and thus the Q value increases.

[0115] On the other hand, reference Figure 4 (c), when the shielding structure consists only of a conductive layer, the pen signal (V pen ) almost disappears. This is due to the eddy current generated in the conductive layer.

[0116] Therefore, if Figure 4 As shown in (d), according to the conventional shielding structure consisting of a magnetic field shielding sheet and a conductive layer, the pen signal received from the stylus increases compared to the case where only the conductive layer exists, but decreases compared to the case where there is no shielding structure. And, according to the conventional shielding structure, the pen signal of the stylus is reduced by about 2 / 3 (66%) compared to the reference pen signal.

[0117] Reference again Figure 2 and Figure 3 The shielding part 400 of the touch input device according to the embodiment of the present invention can solve the problem caused by Figure 4 The problems caused by the shielding structure of the conventional touch input device described in .

[0118] Figure 2 and Figure 3 The shielding portion 400 of the touch input device according to the embodiment of the present invention shown can not only minimize the attenuation of the pen signal received from the stylus pen 1, but also minimize the change in the inductance value of the resonant circuit portion 13 of the stylus pen 1 due to the approach of the stylus pen 1 and / or the tilt operation of the stylus pen 1.

[0119] The shielding portion 400 has a magnetic permeability and a thickness such that the inductance value of the resonance circuit portion 13 of the stylus pen 1 is not substantially changed by the approach or tilt operation of the stylus pen 1 .

[0120] Specifically, the shielding part 400 has a predetermined magnetic permeability and thickness. Therefore, it is possible to minimize the pen signal (V pen ) attenuation.

[0121] The magnetic permeability of the shielding part 400 may be greater than 10 and less than 300. If the magnetic permeability is greater than 300, the inductance value of the resonant circuit part 13 changes greatly and becomes difficult to use, while if the magnetic permeability is less than 10, it is difficult to exert the magnetic field shielding effect.

[0122] The thickness of the shielding part 400 may be greater than 10 μm and less than 300 μm. If the thickness of the shielding part 400 is less than 10 μm, it is difficult to exert the magnetic field shielding effect. If the thickness is greater than 300 μm, it is difficult to ensure a space for placing the shielding part 400 in the touch input device.

[0123] The shielding part 400 has a magnetic permeability and a thickness such that the change rate of the inductance (L) value of the resonance circuit part 13 of the stylus pen 1 is -10% to +10%. Therefore, the pen signal (V pen ) attenuation.

[0124] refer to Figure 5 illustrate Figure 2 and Figure 3 FIG. 1 is an example of a shielding portion 400 of a touch input device according to an embodiment of the present invention.

[0125] Figure 5 for Figure 2 and Figure 3 FIG. 4 is a cross-sectional view of an example of the shielding portion 400 shown in FIG.

[0126] refer to Figure 5 The shielding part 400 includes at least one magnetic field shielding sheet 410 and a conductive layer 450 disposed below the magnetic field shielding sheet 410 . Alternatively, the shielding part 400 includes a conductive layer 450 and at least one magnetic field shielding sheet 410 disposed on the conductive layer 450 .

[0127] The magnetic field shielding sheet 410 blocks the magnetic field to prevent the electronic component 500 from being Figure 2 digitizer 300 or Figure 3 The sensing portion 100 is affected by the magnetic field.

[0128] Conductive layer 450 may be made of a metal such as copper or aluminum, or may be an alloy made by adding another metal or non-metal element to at least one metal. Conductive layer 450 has a ground potential.

[0129] By including Figure 5The shielding portion 400 of the magnetic field shielding sheet 410 and the conductive layer 450 shown can minimize the change in the inductance value of the resonant circuit portion 13 of the stylus pen 1 caused by the approaching motion of the stylus pen 1 and / or the tilting motion of the stylus pen 1. The approaching motion may be an operation in which the user approaches the touch input device 2 in a hovering state in which the stylus pen 1 is separated from the touch input device 2 by a predetermined interval. The tilting motion may be an operation in which the user tilts the stylus pen 1 at a predetermined angle above the touch input device 2.

[0130] refer to Figures 6 to 11 A touch input device including a shielding portion 400 according to an embodiment of the present invention is described in detail to minimize the change in the inductance value of the resonant circuit portion 13 of the stylus pen 1 caused by the approach operation of the stylus pen 1 and / or the tilt operation of the stylus pen 1. For the convenience of description, Figures 6 to 11 Omitted except Figure 2 or Figure 3 Components other than the shielding portion 400 of the touch input device are shown.

[0131] Figure 6 1 is a diagram for explaining a change in the resonant frequency of a pen signal of a stylus pen due to an approach operation of the stylus pen 1 on the shielding part 400 of the touch input device according to an embodiment of the present invention. Figure 7 1 is a diagram for explaining a change in the resonance frequency of a pen signal of the stylus pen due to a tilting operation of the stylus pen 1 on the shielding part 400 of the touch input device according to the embodiment of the present invention.

[0132] refer to Figure 6 and Figure 7 , when including Figure 2 or Figure 3 When the stylus pen 1 is approached or tilted on the touch input device with the shielding portion 400, the inductance value of the inductor portion of the resonant circuit portion of the stylus pen 1 is virtually unchanged, and therefore the resonant frequency of the resonant circuit portion of the stylus pen 1 is virtually unchanged. The reason is that the change in the inductance value of the resonant circuit portion of the stylus pen 1 caused by the magnetic field shielding sheet 410 and the change in the inductance value of the resonant circuit portion of the stylus pen 1 caused by the conductive layer 450 cancel each other out. Specifically, referring to Figures 8 to 11 Provide explanation.

[0133] Figure 8 FIG. 1 is a diagram for explaining that the resonance frequency of the pen signal changes due to the proximity operation of the stylus pen 1 on the magnetic field shielding sheet 410 when only the magnetic field shielding sheet 410 is present. Fig. 91 is a diagram for explaining how the resonance frequency of the pen signal changes due to the tilting operation of the stylus pen 1 on the magnetic field shielding sheet 410 .

[0134] refer to Figure 8 and Fig. 9 When the stylus pen 1 performs a proximity operation or a tilt operation, the inductance value of the inductor portion of the resonant circuit portion of the stylus pen 1 increases, causing a decrease in the resonant frequency of the resonant circuit portion of the stylus pen 1. When the resonant frequency of the pen signal of the stylus pen 1 changes, a phase shift and a decrease in amplitude occur.

[0135] like Figure 8 and Fig. 9 As shown, the principle that the inductance value of the inductor part of the resonance circuit part of the stylus pen 1 increases due to the magnetic field shielding sheet 410 is based on the following mathematical formula 1.

[0136] Mathematical formula 1

[0137]

[0138] According to the above-mentioned mathematical formula 1, the inductance value is proportional to the electromotive force (Vemf), and the electromotive force (Vemf) is proportional to the change in magnetic flux (Φ) per time (t). Therefore, the magnetic field shielding sheet 410 can gather magnetic flux (that is, increase density), and the change in magnetic flux increases due to the magnetic field shielding sheet 410, so the inductance value increases.

[0139] Fig.10 FIG. 1 is a diagram for explaining that the resonant frequency of the pen signal changes when the stylus pen 1 approaches the conductive layer 450 in the presence of the conductive layer 450 . Fig.11 4 is a diagram for explaining how the resonance frequency of the pen signal changes due to the tilting operation of the stylus pen 1 on the conductive layer 450 .

[0140] refer to Fig.10 and Fig.11 When the stylus pen 1 performs a proximity operation or a tilt operation, the inductance value of the inductor portion of the resonant circuit portion of the stylus pen 1 decreases, causing an increase in the resonant frequency of the resonant circuit portion of the stylus pen 1. When the resonant frequency of the pen signal of the stylus pen 1 changes, a phase shift and a decrease in amplitude occur.

[0141] like Fig.10 and Fig.11As shown, the principle that the inductance value of the inductor part of the resonant circuit part of the stylus pen 1 is reduced due to the conductive layer 450 is that the conductive layer 450 generates eddy current to reduce the change of magnetic flux, and the eddy current is a current that blocks the direction of the change of the magnetic field. That is, the change of magnetic flux is reduced due to the conductive layer 450, so the inductance value is reduced.

[0142] Again, if Figure 6 and Figure 7 As shown, the shielding part 400 according to the embodiment of the present invention includes a magnetic field shielding sheet 410 and a conductive layer 450. Figure 8 and Fig. 9 The increase in the inductance of the resonant circuit portion of the stylus pen 1 due to the magnetic field shielding sheet 410 is shown in FIG. Fig.10 and Fig.11 The reduction in the inductance value of the resonant circuit portion of the stylus pen 1 due to the conductive layer 450 is substantially the same, or the sum of the increase and the reduction is -10% to +10% of the reference inductance value, where the reference inductance value refers to the inductance value when the resonant circuit portion of the stylus pen 1 is not affected by the shielding portion 400.

[0143] Therefore, the touch input device including the shielding part 400 according to the embodiment of the present invention can minimize the change in the inductance value of the resonance circuit part 13 of the stylus pen 1 due to the approach operation of the stylus pen 1 and / or the tilt operation of the stylus pen 1 .

[0144] The touch input device including the shielding portion 400 according to the embodiment of the present invention can prevent the change in the inductance value of the resonant circuit portion of the stylus due to the approach or tilt of the stylus, and thus can clearly distinguish whether the phase change of the pen signal received from the stylus is caused by other reasons.

[0145] For example, if the frequency of the received pen signal has a phase change compared to the resonance frequency, the touch input device according to the embodiment of the present invention can determine that the phase change of the frequency is caused by the pressure applied to the stylus pen 1 .

[0146] Therefore, the touch input device including the shielding portion 400 according to the embodiment of the present invention can clearly distinguish the phase change of the frequency of the pen signal from the stylus pen 1 caused by the pressure applied to the stylus pen 1, and can further determine the magnitude of the pressure applied to the stylus pen 1 according to the phase change.

[0147] Again, reference Figure 6 and Figure 7 , the touch input device according to the embodiment of the present invention may further have the following features by including the shielding part 400 .

[0148] 1) In Figure 6In the embodiment, the inductance (L) value of the resonant circuit portion 13 when the stylus pen 1 is moved upward from the touch surface of the touch input device to a predetermined height is -10% to +10% of the inductance (L) value of the resonant circuit portion 13 when the stylus pen 1 is located on the touch surface. The predetermined height may be 10 mm, but is not limited thereto, and may be set to various heights.

[0149] Or, in Figure 6 In the embodiment, the inductance (L) value of the resonant circuit portion 13 when the stylus pen 1 is moved from the predetermined height to the touch surface is -10% to +10% of the inductance (L) value of the resonant circuit portion 13 when the stylus pen 1 is located at the predetermined height.

[0150] 2) In Figure 7 In the embodiment, the inductance (L) value of the resonant circuit portion 13 when the stylus pen 1 is vertically located on the touch surface of the touch input device and when the stylus pen 1 is tilted at a predetermined angle is -10% to +10% of the inductance (L) value of the resonant circuit portion 13 when the stylus pen 1 is vertically located on the touch surface. The predetermined angle may be 60, but is not limited thereto, and may be set to various angles.

[0151] Or, in Figure 7 In the embodiment, the inductance (L) value of the resonant circuit portion 13 when the stylus pen 1 moves from the state tilted at the predetermined angle to perpendicular to the touch surface is -10% to +10% of the inductance (L) value of the resonant circuit portion 13 when the stylus pen 1 is tilted at the predetermined angle.

[0152] According to the characteristics 1) or 2), the pen signal (V pen )’s attenuation advantage.

[0153] Fig.12 (a) and (b) are used for illustration Figure 2 or Figure 3 FIG. 4 is a diagram showing modified examples 400 ′ and 400 ″ of the shielding layer 400 .

[0154] refer to Fig.12 In (a) and (b), the conductive layer 450', 450" has at least one slit 451, 451' (slit).

[0155] exist Fig.12 In (a), the slit 451 has a shape that extends long from one side edge of the conductive layer 450' toward the inner side of the conductive layer 450'. Alternatively, the slit 451 has a narrow gap in the shape that a part of each corner and / or each side of the conductive layer 450' extends toward the center of the conductive layer 450'.

[0156] exist Fig.12In (b), the slits 451' have a plurality of dotted line shapes formed along the row and / or column direction of the conductive layer 450".

[0157] Fig.12 The slits 451, 451' shown in (a) and (b) can reduce the generation of eddy current in the conductive layer 450', 450", thereby having the effect of improving Figure 1 The effect of the amplitude of the pen signal emitted by the stylus 1.

[0158] Therefore, the touch input device including the shielding layer 400 ′, 400 ″ having such a conductive layer 450 ′, 450 ″ has an advantage of increasing the magnitude of the pen signal received from the stylus pen while keeping the inductance change rate of the resonance circuit portion 13 of the stylus pen 1 almost unchanged.

[0159] Fig.13 To also include Fig.12 2 is a cross-sectional view of a touch input device of (a) or (b) a shielding layer 400 ′, 400 ″ and a frame 700 below the shielding layer 400 ′, 400 ″.

[0160] Fig.13 The shielding layer 440 shown in the figure includes a magnetic field shielding sheet 410 and a magnetic field shielding sheet 410 disposed below the magnetic field shielding sheet 410 and having Fig.12 The conductive layer 450 has a slit 451 of (a) or (b).

[0161] The frame 700 may be made of a conductive material and disposed below the shielding layers 400', 400". Fig.13 Not shown, but the frame 700 may also be provided below Figure 3 The electronic component 500 and the substrate 600 are shown. The frame 700 may be a mid frame or SUS.

[0162] As in Fig.12 As described in (a) or (b), when the conductive layer 450 has the slits 451, the pen signal of the stylus pen 1 can reduce the eddy current generated in the conductive layer 450, thereby increasing the size of the pen signal. Fig.13 In the case of the touch input device shown, since the frame 700 made of a conductive material is provided below the conductive layer 450 , it is difficult to expect the effect of reducing eddy currents by the slits 451 .

[0163] Therefore, in the following reference Fig.14 and Fig.15 A structure capable of increasing the magnitude of a pen signal received from a touch input device including a shielding layer and a frame below the shielding layer is described.

[0164] Fig.14 is a cross-sectional view of a touch input device according to yet another embodiment of the present invention.

[0165] Fig.14 The touch input device shown is Fig.13 The touch input device shown differs in the frame 700 ′.

[0166] Fig.14 The frame 700' of the touch input device shown in the figure has an opening 710 corresponding to at least a portion of the slit 451 of the conductive layer 450. Fig.14 As shown, the opening 710 has the same size or shape as the slit 451 of the conductive layer 450, or Fig.14 Not shown, it has a shape and a predetermined size that overlaps at least a portion of the slit 451 of the conductive layer 450 in the up-down direction.

[0167] As described above, by forming the opening 710 corresponding to at least a portion of the slit 451 of the conductive layer 450 in the frame 700 ′, there is an advantage of reducing the eddy current due to the pen signal of the stylus pen and increasing the magnitude of the received pen signal.

[0168] Fig.15 is a cross-sectional view of a touch input device according to yet another embodiment of the present invention.

[0169] Fig.15 The touch input device shown is Fig.14 The touch input device shown differs in the frame 700".

[0170] Fig.15 The frame 700 ″ of the touch input device shown has an opening corresponding to at least a portion of the slit 451 of the conductive layer 450 , and a filling component 750 made of a non-conductive material is disposed in the opening. The filling component made of a non-conductive material may be made of a resin material such as plastic.

[0171] In this way, by forming an opening portion corresponding to at least a portion of the slit 451 of the conductive layer 450 in the frame 700" and providing a filling member 750 in the opening portion, there is an advantage of reducing the eddy current due to the pen signal of the stylus pen and increasing the size of the received pen signal.

[0172] In the following, reference is made to the accompanying drawings. Figure 3 Various embodiments of the sensing portion 100 are shown.

[0173] Fig.16 FIG. 1 is a schematic structural diagram of a sensor unit 100 of a touch input device according to a first embodiment of the present invention.

[0174] The touch input device according to the first embodiment of the present invention may be a portrait type touch input device. The width of such a portrait type touch input device is smaller than the height, and a control unit (not shown) for controlling the sensing unit 100 may be disposed below the sensing unit 100. For example, such a touch input device corresponds to the shape of a smartphone.

[0175] The sensor unit 100 can not only detect the position of an object such as a finger on the screen, but also drive the Figure 1 The stylus pen 1 is shown in the figure, and a signal (stylus pen signal) emitted from the stylus pen is detected to detect the position of the stylus pen on the screen.

[0176] The sensing part 100 includes a plurality of patterns (or a plurality of electrodes).

[0177] The sensing portion 100 includes a plurality of first to fourth patterns 101 , 102 , 103 , and 104 .

[0178] The first pattern 101 has a shape extending along an arbitrary first direction y. The first direction may be the long axis direction of the screen of the touch input device. The first pattern 101 may also be named ATX (Active TX). The first pattern 101 has a predetermined shape in which an electrical path is formed along an arbitrary first direction y.

[0179] The second pattern 102 has a shape extending along the first direction y, is disposed adjacent to the first pattern 101, and is separated from the first pattern 101 by a predetermined distance. The second pattern 102 may also be named DTX (Dummy TX). The second pattern 102 has a predetermined shape adjacent to the first pattern 101 and forming an electrical path along the first direction y.

[0180] The third pattern 103 has a shape extending along a second direction x different from the first direction. The second direction x may be a direction perpendicular to the first direction y, and may be a short axis direction of the screen of the touch input device. The third pattern 103 may also be named ARX (Active RX). The third pattern 103 has a predetermined shape in which an electrical path is formed along any second direction x.

[0181] The fourth pattern 104 has a shape extending along the second direction x, is disposed adjacent to the third pattern 103, and is spaced a predetermined distance from the third pattern 103. The fourth pattern 104 may also be named DRX (dummy RX). The fourth pattern 104 has a predetermined shape adjacent to the third pattern 103 and forming an electrical path along the second direction x.

[0182] The third pattern 103 and the fourth pattern 104 are disposed on the first pattern 101 and the second pattern 102, and are separated from the first pattern 101 and the second pattern 102 by a predetermined distance. Fig. 27 The first to fourth patterns are described in detail in the sensing portion provided in the same layer.

[0183] The plurality of first patterns 101 are arranged along the second direction x, and the plurality of second patterns 102 are also arranged along the second direction x. The plurality of third patterns 103 are arranged along the first direction y, and the plurality of fourth patterns 104 are also arranged along the first direction y.

[0184] The first pattern 101 extends along the first direction y and the third pattern 103 extends along the second direction x, the first direction y is longer than the second direction x, so the number of the plurality of first patterns 101 is less than the number of the plurality of third patterns 103. Therefore, the number of channels of the plurality of first patterns 101 is less than the number of channels of the plurality of third patterns 103.

[0185] The number of the plurality of first patterns 101 and the number of the plurality of third patterns 103 may be increased or decreased according to the size of the screen of the touch input device.

[0186] The plurality of second patterns 102 correspond to the plurality of first patterns 101 one by one and are arranged in the same number. The other ends (or second side ends) of the plurality of second patterns 102 are electrically connected to each other through a conductive pattern. The conductive pattern may be a metal mesh or a silver trace.

[0187] One end (or the first side end) of the plurality of second patterns 102 may be electrically connected to a control unit (not shown). Fig.17 As shown, one end of two or more second patterns 102 in the plurality of second patterns 102 can be electrically connected to each other through the conductive pattern. With this structure, the number of channels in the plurality of second patterns 102 can be reduced to half the number of channels in the plurality of first patterns 101. Among them, two or more second patterns 102 in the plurality of second patterns 102 can be adjacent to each other.

[0188] On the other hand, Fig.18 As shown, one end of each of the plurality of second patterns 102 can be connected to a conductive pattern.

[0189] Again, reference Fig.16 Since the third patterns 103 are arranged along the first direction y, the number of the third patterns 103 is greater than the number of the first patterns 101. Therefore, the number of channels of the third patterns 103 is greater than the number of channels of the first patterns 101.

[0190] The plurality of fourth patterns 104 may correspond to the plurality of third patterns 103 one by one and be arranged in the same number. The other ends (or second side ends) of the plurality of fourth patterns 104 may be electrically connected to each other through a conductive pattern.

[0191] In this Fig.16 In the sensing portion 100 of the touch input device shown, the plurality of first patterns 101 and the plurality of third patterns 103 basically sense the touch of an object such as a finger. To this end, the plurality of first patterns 101 are used as touch drive electrodes (TX electrodes) for applying touch drive signals, and the plurality of third patterns 103 are used as touch detection electrodes (RX electrodes, or touch receiving electrodes) for receiving touch detection signals. Of course, the opposite is also possible.

[0192] In order to Fig.16 The sensing part 100 of the touch input device shown drives (driving) and senses (sensing) the stylus, and the plurality of first to fourth patterns 101, 102, 103, 104 can be used in various combinations. The various combinations are shown in Table 1 below. In the following Table 1, "1" represents a plurality of first patterns 101, "2" represents a plurality of second patterns 102, "3" represents a plurality of third patterns 103, and "4" represents a plurality of fourth patterns 104.

[0193] Table 1

[0194]

[0195] Referring to Table 1 above, in various cases (No. 1 to No. 32), the plurality of first patterns 101 and the plurality of third patterns 103 are used to sense the touch of an object such as a finger. Specifically, the plurality of first patterns 101 are used as touch drive electrodes, and the plurality of third patterns 103 are used as touch receiving electrodes. Of course, the opposite situation is also possible.

[0196] One or more of the plurality of first to fourth patterns 101, 102, 103, 104 may be used as a stylus driving electrode for driving. A current loop for driving the stylus may be formed using at least one or two of the first to fourth patterns 101, 102, 103, 104. For example, the X-axis drive may use any one of the plurality of first patterns 101 and the plurality of second patterns 102, and the Y-axis drive may use any one of the plurality of third patterns 103 and the plurality of fourth patterns 104. The driving of the stylus may be realized by any one or both of the X-axis drive and the Y-axis drive.

[0197] One or more of the plurality of first to fourth patterns 101, 102, 103, 104 may be used as a sensing electrode for sensing a stylus signal emitted from the stylus. For example, both X-axis sensing and Y-axis sensing are required to sense the stylus signal, so two patterns may be used from the plurality of first to fourth patterns 101, 102, 103, 104. The X-axis sensing may use any one of the plurality of first patterns 101 and the plurality of second patterns 102, and the Y-axis sensing may use any one of the plurality of third patterns 103 and the plurality of fourth patterns 104.

[0198] In Table 1 above, “uplink signal size” refers to the signal used to drive Figure 1 When the same stylus driving signal is applied to the plurality of first patterns 101 and the plurality of second patterns 102 to compare the magnitude of the signal received by the stylus, the uplink signal when the stylus driving signal is applied to the plurality of second patterns 102 is greater than the uplink signal when the stylus driving signal is applied to the plurality of first patterns 101.

[0199] This is because the other ends (or second side ends) of the multiple second patterns 102 are electrically connected to each other, and two or more second patterns to which the stylus drive signal is appropriately selected can form at least one current loop, but the other ends (or second side ends) of the multiple first patterns 101 are not electrically connected to each other and cannot form a current loop. When each first pattern 101 is energized, the RC of each first pattern 101 is charged, so the closer one end (or first side end) of each first pattern 101 is to the other end (or second side end), the more difficult it is for current to flow. In addition, the stylus drive signal applied by the multiple first patterns 101 can be transmitted to the multiple second patterns 101 that form a current loop through capacitive coupling. At this time, the capacitive coupling causes signal attenuation.

[0200] Likewise, the uplink signal when the stylus pen driving signal is applied to the plurality of fourth patterns 104 is larger than the uplink signal when the stylus pen driving signal is applied to the plurality of third patterns 103 .

[0201] In Table 1 above, "downlink signal size" refers to the Figure 1 When the same stylus signal is received through multiple first patterns 101 and multiple second patterns 102 respectively and the signal sizes are compared, the downlink signal in the case of receiving the stylus signal through multiple second patterns 102 is greater than the case of receiving the stylus signal through multiple first patterns 101.

[0202] This is because the other ends (second side ends) of the multiple second patterns 102 are electrically connected to each other to form a current loop, but the other ends (first side ends) of the multiple first patterns 101 are not electrically connected to each other. In particular, the stylus signal is transmitted from the multiple second patterns 101 that form a current loop through capacitive coupling to the multiple first patterns 101. At this time, attenuation of the downlink signal occurs.

[0203] Likewise, the downlink signal when the stylus pen signal is received through the plurality of fourth patterns 104 is larger than the downlink signal when the stylus pen signal is received through the plurality of third patterns 103 .

[0204] In Table 1 above, "additional channel for stylus" refers to whether additional channels are required for the stylus in addition to touch sensing. When a plurality of second patterns 102 and / or a plurality of fourth patterns 104 are used for driving or sensing of the stylus, additional channels are required (marked as "yes" in Table 1). On the contrary, when a plurality of first patterns 101 and / or a plurality of third patterns 103 are used for driving or sensing of the stylus, additional channels are not required (marked as "no" in Table 1).

[0205] Hereinafter, several embodiments of the multiple combinations (No. 1 to No. 32) in Table 1 are described in detail. Among them, those skilled in the art will fully understand other combinations not described through the following detailed description.

[0206] In No. 1, a plurality of first patterns 101 are used as touch drive electrodes for sensing the touch of an object and as stylus detection electrodes for detecting stylus signals. A plurality of second patterns 102 are used as stylus drive electrodes for driving a stylus. A plurality of third patterns 103 are used as touch detection electrodes for sensing the touch of an object and as stylus detection electrodes for sensing stylus signals. In addition, a plurality of fourth patterns 104 are electrically floating. Electrically floating means that the other ends (second side ends) of the plurality of fourth patterns 104 are electrically connected to each other, but one ends (first side ends) of the plurality of fourth patterns 104 are not connected to other components.

[0207] In case No. 1, the plurality of second patterns 102 are used as stylus pen driving electrodes, so the magnitude of the uplink signal is relatively large. In addition, the plurality of first patterns 101 and the plurality of third patterns 103 are used as stylus pen detection electrodes, so the magnitude of the downlink signal is relatively small. In addition, the plurality of second patterns 102 are used as stylus pen driving electrodes, so a separate additional channel is not required to drive the stylus pen, and an additional channel is not required to sense the stylus pen.

[0208] In No. 4, the plurality of first patterns 101 are used as touch drive electrodes for sensing a touch of an object. The plurality of second patterns 102 are used as stylus drive electrodes for driving a stylus and as stylus detection electrodes for sensing a stylus signal. The plurality of third patterns 103 are used as touch detection electrodes for sensing a touch of an object. Furthermore, the plurality of fourth patterns 104 are used as stylus detection electrodes for sensing a stylus signal.

[0209] In case No. 4, the plurality of second patterns 102 are used as stylus driving electrodes, so the magnitude of the uplink signal is relatively large. The plurality of second patterns 102 and the plurality of fourth patterns 104 are used as stylus detection electrodes, so the magnitude of the downlink signal is relatively large. In addition, the plurality of second patterns 102 are used alone as stylus driving electrodes and stylus detection electrodes, and the plurality of fourth patterns 104 are used alone as stylus detection electrodes, so a separate additional channel for driving and sensing the stylus is required.

[0210] In No. 8, the plurality of first patterns 101 are used as touch drive electrodes for sensing a touch of an object. The plurality of second patterns 102 are used as stylus detection electrodes for sensing a stylus signal. The plurality of third patterns 103 are used as touch detection electrodes for sensing a touch of an object. Furthermore, the plurality of fourth patterns 104 are used as stylus drive electrodes for driving a stylus and as stylus detection electrodes for sensing a stylus signal.

[0211] In case No. 8, the plurality of fourth patterns 104 are used as stylus driving electrodes, so the magnitude of the uplink signal is relatively large. The plurality of second patterns 102 and the plurality of fourth patterns 104 are used as stylus detection electrodes, so the magnitude of the downlink signal is relatively large. In addition, the plurality of second patterns 102 are used solely as stylus detection electrodes and the plurality of fourth patterns 104 are used solely as stylus driving electrodes and stylus detection electrodes, so separate additional channels for driving and sensing the stylus are required.

[0212] In No. 12, a plurality of first patterns 101 are used as touch drive electrodes for sensing a touch of an object. A plurality of second patterns 102 are used as stylus drive electrodes for driving a stylus and as stylus detection electrodes for sensing a stylus signal. A plurality of third patterns 103 are used as touch detection electrodes for sensing a touch of an object. Furthermore, a plurality of fourth patterns 104 are used as stylus drive electrodes for driving a stylus and as stylus detection electrodes for sensing a stylus signal.

[0213] In case No. 12, the plurality of second patterns 102 and the fourth pattern 104 are used as stylus driving electrodes, so the magnitude of the uplink signal is relatively large. The plurality of second patterns 102 and the plurality of fourth patterns 104 are used as stylus detection electrodes, so the magnitude of the downlink signal is relatively large. In addition, the plurality of second patterns 102 are used alone as stylus driving electrodes and stylus detection electrodes, and the plurality of fourth patterns 104 are used alone as stylus driving electrodes and stylus detection electrodes, so a separate additional channel for driving and sensing the stylus is required.

[0214] In No. 13, the plurality of first patterns 101 are used as touch drive electrodes for sensing the touch of an object, as stylus drive electrodes for driving a stylus, and as stylus detection electrodes for sensing stylus signals. The plurality of third patterns 103 are used as touch detection electrodes for sensing the touch of an object, and as stylus detection electrodes for sensing stylus signals. Furthermore, the plurality of second patterns 102 and the plurality of fourth patterns 104 are electrically floating.

[0215] In case No. 13, the plurality of first patterns 101 are used as stylus driving electrodes, so the size of the uplink signal is relatively small. The plurality of first patterns 101 and the plurality of third patterns 103 are used as stylus detection electrodes, so the size of the downlink signal is relatively small. Furthermore, the plurality of first patterns 102 are used as stylus driving electrodes and stylus detection electrodes, and the plurality of third patterns 103 are used as stylus detection electrodes, so a separate additional channel for driving and sensing the stylus is not required.

[0216] In No. 17, the plurality of first patterns 101 are used as touch drive electrodes for sensing the touch of an object and as stylus detection electrodes for sensing a stylus signal. The plurality of third patterns 103 are used as touch detection electrodes for sensing the touch of an object, as stylus drive electrodes for driving a stylus, and as stylus detection electrodes for sensing a stylus signal. Furthermore, the plurality of second patterns 102 and the fourth pattern 104 are electrically floating.

[0217] In case No. 17, the plurality of third patterns 103 are used as stylus driving electrodes, so the size of the uplink signal is relatively small. The plurality of first patterns 101 and the plurality of third patterns 103 are used as stylus detection electrodes, so the size of the downlink signal is relatively small. Furthermore, the plurality of first patterns 102 are used as stylus detection electrodes and the plurality of third patterns 103 are used as stylus driving electrodes and stylus detection electrodes, so a separate additional channel for driving and sensing the stylus is not required.

[0218] In No. 21, the plurality of first patterns 101 are used as touch drive electrodes for sensing the touch of an object, as stylus drive electrodes for driving a stylus, and as stylus detection electrodes for sensing stylus signals. The plurality of third patterns 103 are used as touch detection electrodes for sensing the touch of an object, as stylus drive electrodes for driving a stylus, and as stylus detection electrodes for sensing stylus signals. Furthermore, the plurality of second patterns 102 and the fourth pattern 104 are electrically floating.

[0219] In No. 21, the plurality of first patterns 101 and the third pattern 103 are used as stylus driving electrodes, so the size of the uplink signal is relatively small. The plurality of first patterns 101 and the plurality of third patterns 103 are used as stylus detection electrodes, so the size of the downlink signal is relatively small. In addition, the plurality of first patterns 102 are used as stylus driving electrodes and stylus detection electrodes, and the plurality of third patterns 103 are used as stylus driving electrodes and stylus detection electrodes, so a separate additional channel for driving and sensing the stylus is not required.

[0220] In the plurality of combinations (No. 1 to No. 32) in Table 1 above, in Nos. 1, 5, 9, 25, and 29, the driving in the column of 'Stylus Additional Channel' is "Yes", and the sensing is "No". In the Nos. 1, 5, 9, 25, and 29, the stylus is sensed using the plurality of first patterns 101 and the third pattern 103, and driven using the plurality of second patterns 102 and / or the plurality of fourth patterns 104. When the stylus is driven, it is difficult to form a magnetic field for causing the stylus to resonate even if the plurality of second patterns 102 and / or the plurality of fourth patterns 104 are used, and therefore, Fig.17 As shown, one end (first side end) of two or more adjacent second patterns can be electrically connected. Similarly, one end (first side end) of two or more adjacent fourth patterns can be electrically connected. Configuring in this way has the advantage of reducing the additional channels for driving the stylus.

[0221] The control unit (not shown) is used to control the sensor unit 100 .

[0222] Specifically, as shown in No. 1 to No. 32 in Table 1 above, the control unit (not shown) can apply touch drive signals to the plurality of first patterns 101 and receive touch detection signals to the plurality of third patterns 103 .

[0223] As shown in No. 1 to No. 32 in Table 1 above, the control unit (not shown) can apply a stylus driving signal to at least one pattern among the multiple first patterns 101 to fourth patterns 104, and receive a stylus detection signal to at least one pattern among the multiple first patterns 101 to fourth patterns 104.

[0224] As shown in No. 13 to No. 32 in Table 1 above, the control unit (not shown) may apply a stylus driving signal to at least one of the plurality of first patterns 101 or the plurality of third patterns 103 .

[0225] As shown in No. 1-3, 5-7, 9-11, 13-15, 17-19, 21-23, 25-27, and 29-31 in Table 1 above, the control unit (not shown) can receive a stylus detection signal to at least one of the plurality of first patterns 101 or the plurality of third patterns 103 .

[0226] As shown in No. 1-12 and 25-32 in Table 1 above, the control unit (not shown) may apply a stylus driving signal to at least one of the plurality of second patterns 102 or the plurality of fourth patterns 104 .

[0227] As shown in No. 2-4, 6-8, 10-12, 14-16, 19-20, 22-24, 26-28, 30-32 in Table 1 above, the control unit (not shown) can receive a stylus detection signal to at least one of the plurality of second patterns 102 or the plurality of fourth patterns 104 .

[0228] The control unit (not shown) can select at least one of the plurality of first patterns 101 to fourth patterns 104 as a pen driving electrode, and apply a stylus driving signal to the selected pen driving electrode. The selection of at least one of the plurality of first patterns 101 to fourth patterns 104 as a pen driving electrode can be based on the stylus 1 being Figure 1 The pattern selected when the stylus pen is in a hovering state may be different from the pattern selected when the stylus pen is in a contact state. For example, the control unit (not shown) may select any one of the first pattern 101 and the second pattern 102 as the pen driving electrode when the stylus pen is in a hovering state, and select any one of the third pattern 103 and the fourth pattern 104 as the pen driving electrode when the stylus pen is in a contact state. Of course, the opposite situation is also possible.

[0229] The control unit (not shown) may select at least two patterns from the plurality of first patterns 101 to the plurality of fourth patterns 104 as pen sensing electrodes, and sense the stylus signal emitted from the stylus through the selected pen sensing electrodes. The selection of at least two patterns from the plurality of first patterns 101 to the plurality of fourth patterns 104 as pen sensing electrodes may be based on the stylus 1 being in a state of ... Figure 1The pattern selected when the stylus pen is in a hovering state may be different from the pattern selected when the stylus pen is in a contact state. For example, the control unit (not shown) may select any one of the first pattern 101 and the second pattern 102 as the pen sensing electrode when the stylus pen is in a hovering state, and select any one of the third pattern 103 and the fourth pattern 104 as the pen sensing electrode when the stylus pen is in a contact state. Of course, the opposite situation is also possible.

[0230] Fig.19 FIG. 1 is a schematic structural diagram of a sensor unit 100 ′ of a touch input device according to a second embodiment of the present invention.

[0231] The touch input device according to the second embodiment of the present invention is a landscape type touch input device. The width of this landscape type touch input device is greater than the height, and a control unit (not shown) for controlling the sensing unit 100' can be arranged below the sensing unit 100'. For example, this touch input device can correspond to the shape of a tablet computer.

[0232] The structure of the sensor unit 100' of the touch input device according to the second embodiment of the present invention is similar to Fig.16 The structure of the sensor portion 100 of the touch input device according to the first embodiment is the same as that of the first embodiment, except that the direction is rotated by 90 degrees.

[0233] The sensing portion 100' of the touch input device according to the second embodiment of the present invention includes a plurality of first to fourth patterns 101, 102, 103, and 104. The first pattern 101 and the second pattern 102 are disposed adjacent to each other and have a shape extending in one direction. Alternatively, the first pattern 101 and the second pattern 102 have a predetermined shape in which an electrical path is formed in one direction. The third pattern 103 and the fourth pattern 104 are disposed adjacent to each other and have a shape extending in another direction different from the one direction. Alternatively, the third pattern 103 and the fourth pattern 104 have a predetermined shape in which an electrical path is formed in the other direction. The other ends (second side ends) of the plurality of second patterns 102 are electrically connected to each other, and the other ends (second side ends) of the plurality of fourth patterns 104 are electrically connected to each other.

[0234] When Fig.19 The sensing portion 100' of the touch input device according to the second embodiment is designed to be the size of a screen of a horizontal tablet computer, i.e., about 10 to 14 inches, and is constructed according to the example No. 1 in Table 1 above. A rough summary of the total number of channels (Total Channel) and the number of drive trace channels (TX Trace Channel) of the sensing portion 100' is shown in Table 2 below.

[0235] Table 2

[0236]

[0237] In the above Table 2, the number of channels of the stylus pen TX is the value obtained by dividing the number of the plurality of first patterns 101 by 2. This is because the number of the plurality of second patterns 102 is the same as the number of the plurality of first patterns 101. Fig. 20 As shown, two adjacent ends of the ends (first side ends) of the plurality of second patterns 102 are electrically connected to each other to reduce the number of channels by half.

[0238] In Table 2 above, the number of driving trace channels is the sum of the number of channels of the finger TX and the number of channels of the stylus TX. The number of driving trace channels is a major factor in determining the bezel thickness in the width direction of the touch input device according to the second embodiment. This is because the control unit (not shown) in the touch input device according to the second embodiment is disposed below (or above) the sensing unit 100'. As the number of driving trace channels decreases, the bezel thickness in the width direction of the touch input device can be reduced.

[0239] On the other hand, when Fig.19 There is no particular problem when the screen size of the touch input device shown is the size of the screen of a smartphone, for example, 6.9 inches, but Fig.19 When the screen size of the touch input device shown is increased to the screen size of a tablet computer, that is, 11 inches or 12.9 inches, the lengths of the plurality of first to fourth patterns 101, 102, 103, and 104 of the sensing portion 100' also become longer, resulting in an increase in the resistance and capacitance values ​​of the sensing portion 100'. The increase in the resistance and capacitance values ​​narrows the operating frequency bandwidth of the touch drive signal applied to any of the first or third patterns used as touch drive electrodes and the stylus drive signal used to drive the stylus, which may result in a problem that the operating frequency bandwidth required by the design cannot be obtained. In order to solve the problem, it may be considered to reduce the resistance and capacitance values ​​of the sensing portion 100', but there is a limit to reducing these values, and even if these values ​​are reduced as much as possible, the above-mentioned problem is still not solved.

[0240] Furthermore, the stylus pen signal sent from the stylus pen and input to the control unit of the touch input device will also be attenuated, and the attenuation amount is the same as the increase amount of the sensing unit 100'. In particular, the stylus pen detection signal of the portion farthest from the control unit among the plurality of first to fourth patterns 101, 102, 103, 104 of the sensing unit 100' is attenuated during the process of being transmitted to the control unit, resulting in a problem that the voltage value required by the design cannot be output.

[0241] The above problem can be solved by using the plurality of second patterns 102 as stylus detection electrodes for sensing stylus signals as shown in the examples of Nos. 3, 4, 7, 8, 11, 12, 15, 16, 19, 20, 23, 24, 27, 28, 31, and 32 in Table 1 above, or using the plurality of fourth patterns 104 as stylus detection electrodes for sensing stylus signals as shown in the examples of Nos. 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, and 32 in Table 1 above. In the examples, the plurality of second patterns 102 and the plurality of fourth patterns 104 directly receive electromotive force by electromagnetic induction of the stylus, and therefore there is no signal attenuation by capacitive coupling from the second pattern 102 to the first pattern 101 and from the fourth pattern 104 to the third pattern 103.

[0242] As a specific example, when the sensing portion 100' of the touch input device according to the second embodiment is designed to be the size of a screen of a horizontal tablet computer, i.e., about 10 to 14 inches, and is constructed according to the example No. 3 in Table 1 above, a rough summary of the total number of channels (Total Channel) and the number of drive trace channels (TX Trace Channel) of the sensing portion 100' is shown in Table 3 below.

[0243] Table 3

[0244]

[0245] In the above Table 3, the number of channels of the stylus pen TX is the same as the number of the plurality of second patterns 102. This is because the number of the plurality of second patterns 102 is the same as the number of the plurality of first patterns 101, and as Fig.21 As shown, one end of each of the plurality of second patterns 102 is connected to a single conductive pattern.

[0246] In Table 3 above, the number of drive trace channels is the sum of the number of channels of the finger TX and the number of channels of the stylus TX. The number of drive trace channels is a major factor in determining the thickness of the bezel of the short axis of the touch input device. As the number of drive trace channels decreases, the bezel thickness of the short axis of the touch input device can be reduced.

[0247] Although the example in Table 3 has the disadvantage of slightly increasing the number of channels compared to Table 2, it has the advantage of increasing the voltage value of the stylus detection signal received by the control unit because the pen detection signal is received from the stylus instead of through multiple first patterns 101 and through multiple second patterns 102. The applicant has experimentally confirmed that the voltage value of the stylus detection signal received by the control unit is more than twice that of Table 2.

[0248] Furthermore, each of the plurality of second patterns 102 is composed of one channel. Therefore, when the plurality of second patterns 102 are used as stylus drive electrodes (Stylus TX), the interval between the channels is reduced by half compared to the example in Table 2, thereby having the advantage of improving the resolution of stylus drive.

[0249] As another specific example, when the sensing portion 100' of the touch input device according to the second embodiment is designed to be the size of a screen of a horizontal tablet computer, i.e., about 10 to 14 inches, and is constructed according to the example No. 8 in Table 1 above, a rough summary of the total number of channels (Total Channel) and the number of drive trace channels (TX Trace Channel) of the sensing portion 100' is shown in Table 4 below.

[0250] Table 4

[0251] Number of channels (approximately 10 inches or more) Finger TX 42 Finger RX 56 Stylus TX 56 Total channel 154 TX Trace channel 42

[0252] In Table 4 above, the number of channels of the stylus pen TX is the same as the number of the plurality of fourth patterns 104. This is because the number of the plurality of fourth patterns 104' is the same as the number of the plurality of third patterns 103, and as Fig. 22 As shown, one end of each of the plurality of fourth patterns 104 is connected to a single conductive pattern.

[0253] In the above Table 4, the number of driving trace channels is the same as the number of channels of the finger TX. The number of driving trace channels is a major factor in determining the thickness of the bezel of the short axis of the touch input device. As the number of driving trace channels decreases, the bezel thickness of the short axis of the touch input device can be reduced.

[0254] The example in Table 4 has the disadvantage of slightly increasing the total number of channels compared to Table 2, but has the advantage of increasing the voltage value of the pen detection signal received by the control unit by receiving the pen detection signal from the stylus through multiple fourth patterns 104 .

[0255] Furthermore, each of the plurality of fourth patterns 104 is composed of one channel. Therefore, when the plurality of fourth patterns 104 are used as driving electrodes (Stylus TX), the pitch between the channels is reduced by half compared to the example in Table 2, thereby having an advantage of improving driving resolution.

[0256] Furthermore, compared with the above Table 3, the number of TX trace channels can be reduced to 1 / 4 to 1 / 3, thus having the advantage of being able to reduce the thickness of the border (B) in the width direction of the touch input device.

[0257] Fig.23 For a brief display Fig.19 FIG. 2 is a structural diagram of another example of the sensor unit 100 ′ shown in FIG.

[0258] exist Fig.23 In the sensing part 100", each first pattern 101' includes at least two first patterns 1a 101a and first patterns 101b, and each second pattern 102' includes at least two second patterns 101a and second patterns 101b. A plurality of third patterns 103 and fourth patterns 104 are connected to Fig.19 The sensing portion 100 is the same.

[0259] The 1a-th pattern 101a and the 1b-th pattern 101b are arranged along the extending direction of the first pattern 101'. The 2a-th pattern 102a and the 2b-th pattern 201b are arranged along the extending direction of the second pattern 102'.

[0260] The other ends of the plurality of 2a patterns 102a are electrically connected to each other, and the other ends of the plurality of 2b patterns 102b are electrically connected to each other. The other ends of the plurality of 2a patterns 102a and the other ends of the plurality of 2b patterns 102b face each other.

[0261] At one end of the plurality of 2a patterns 102a, two or more adjacent 2a patterns may be electrically connected to each other. At one end of the plurality of 2b patterns 102b, two or more adjacent 2b patterns may be electrically connected to each other. One end of the plurality of 2a patterns 102a and one end of the plurality of 2b patterns 102b may be electrically connected to the conductive pattern separately. Fig. 9 shown.

[0262] As a specific example, Fig.23 The sensor unit 100" shown is designed to be the size of a screen of a landscape-type tablet computer, i.e., approximately 10 to 14 inches, and is constructed according to the example No. 1 in Table 1 above. A rough summary of the total number of channels (Total Channel) and the number of drive trace channels (TX Trace Channel) of the sensor unit 100" is shown in Table 5 below.

[0263] Table 5

[0264]

[0265] In Table 5 above, the number of channels of the stylus pen TX is the value obtained by dividing the number of the plurality of second patterns 102' by 2. This is because the number of the plurality of second patterns 102' is the same as the number of the plurality of first patterns 101', and two adjacent second patterns in the plurality of second patterns 102' are electrically connected to each other.

[0266] In Table 5 above, the number of drive trace channels is the sum of the number of channels of the finger TX and the number of channels of the stylus TX. The number of drive trace channels is a major factor in determining the thickness of the bezel in the width direction of the touch input device. As the number of drive trace channels decreases, the bezel thickness in the short axis of the touch input device can be reduced.

[0267] Compared with the example in Table 2, although the example in Table 5 has the disadvantage of slightly increasing the number of channels, the length of each of the first pattern 101' and the second pattern 102' is reduced by half, so it has the advantage of being able to expand the operating frequency bandwidth of the touch drive signal applied to the touch drive electrode and the pen drive signal for driving the stylus pen due to the reduction of the resistance value and capacitance value of the sensing part 100".

[0268] Fig.24 for Fig. 20 Detailed diagram of the touch input device shown.

[0269] refer to Fig.24 The touch input device 500 includes a sensing portion 100A and a control portion 300 for controlling the sensing portion 100A.

[0270] The sensor unit 100A is Fig. 20 Therefore, the sensor portion 100A includes a plurality of first to fourth patterns (101A, 102A, 103A, 104A).

[0271] The first pattern 101A has a shape extending along a first direction (width direction). The first direction may be a long axis direction (L) of the screen of the touch input device 500. The first pattern 101A may also be named ATX (Active TX).

[0272] The first pattern 101A includes a plurality of main pattern portions and a connection pattern portion for connecting two adjacent main pattern portions among the plurality of main pattern portions. The main pattern portion has a rhombus shape, but is not limited thereto and may have various shapes different from the connection pattern portion.

[0273] The first pattern 101A has an opening in which the second pattern 102A is disposed. The shape of the opening may correspond to the appearance of the first pattern 101A. The first pattern 101A has a structure surrounding the second pattern 102A. The first pattern 101A may be spaced apart from the second pattern 102A by a predetermined distance.

[0274] The second pattern 102A has a shape extending along the first direction, is disposed adjacent to the first pattern 101A, and is spaced a predetermined distance apart from the first pattern 101A. The second pattern 102A may also be named DTX (Dummy TX).

[0275] The second pattern 102A is provided inside the first pattern 101A.

[0276] The second pattern 102A includes a plurality of main pattern portions and a connecting pattern portion for connecting two adjacent main pattern portions among the plurality of main pattern portions. The main pattern portion has a rhombus shape, but is not limited thereto and may have various shapes different from the connecting pattern portion.

[0277] The main pattern portion of the second pattern 102A has a shape corresponding to the main pattern portion of the first pattern 101A, and the connection pattern portion of the second pattern 102A has a shape corresponding to the connection pattern portion of the first pattern 101A.

[0278] The third pattern 103A has a shape extending along a second direction different from the first direction. The second direction may be a direction perpendicular to the first direction, and may be a short axis direction (S) of the screen of the touch input device. The third pattern 103A may also be named ARX (Active RX).

[0279] The third pattern 103A includes a plurality of main pattern portions and a connection pattern portion for connecting two adjacent main pattern portions among the plurality of main pattern portions. The main pattern portion has a rhombus shape, but is not limited thereto and may have various shapes different from the connection pattern portion.

[0280] The third pattern 103A has an opening in which the fourth pattern 104A is disposed. The shape of the opening may correspond to the appearance of the third pattern 103A. The third pattern 103A has a structure surrounding the fourth pattern 104A. The third pattern 103A may be spaced apart from the fourth pattern 104A by a predetermined distance.

[0281] The fourth pattern 104A has a shape extending along the second direction, is disposed adjacent to the third pattern 103A, and is spaced a predetermined distance apart from the third pattern 103A. The fourth pattern 104A may also be named DRX (dummy RX).

[0282] The fourth pattern 104A is provided inside the third pattern 103A.

[0283] The fourth pattern 104A includes a plurality of main pattern portions and a connecting pattern portion for connecting two adjacent main pattern portions among the plurality of main pattern portions. The main pattern portion has a rhombus shape, but is not limited thereto and may have various shapes different from the connecting pattern portion.

[0284] The main pattern portion of the fourth pattern 104A has a shape corresponding to the main pattern portion of the third pattern 103A, and the connection pattern portion of the fourth pattern 104A has a shape corresponding to the connection pattern portion of the third pattern 103A.

[0285] The third pattern 103A and the fourth pattern 104A are disposed on the first pattern 101A and the second pattern 102A, and are separated from the first pattern 101A and the second pattern 102A by a predetermined distance. Fig.30 The first to fourth patterns are described in detail in the sensing portion provided in the same layer.

[0286] Although not shown in the figure, one end (first side end) of the plurality of first patterns 101A is electrically connected to the control unit 300, and the other end (second side end) is electrically open. In particular, one end (first side end) is relatively close to the control unit 300, and the other end (second side end) is relatively far from the control unit 300.

[0287] Although not shown, one ends of the plurality of first patterns 101A are electrically connected to each other through the control unit 300 and the conductive pattern. The plurality of conductive patterns for connecting the plurality of first patterns 101A and the control unit 300 may be arranged inside the frame (B) in the width direction of the touch input device 500.

[0288] After the first conductive patterns in one end (first side end) of the plurality of second patterns 102A are electrically connected to each other through two adjacent one ends, they can be electrically connected to the second conductive patterns through the control unit 300. The other ends (second side ends) of the plurality of second patterns 102A are electrically connected to each other through the conductive pattern. One end (first side end) is relatively close to the control unit 300, and the other end (second side end) is relatively far from the control unit 300.

[0289] like Fig.24 As shown, the second conductive pattern for connecting the plurality of second patterns 102A and the control unit 300 can be arranged inside the frame (B) in the width direction of the touch input device 500. Among them, the plurality of second conductive patterns for connecting the plurality of second patterns 102A and the control unit 300 and the plurality of conductive patterns (not shown) for connecting the plurality of first patterns 101A and the control unit 300 can be arranged inside the frame (B) in the width direction of the touch input device 500.

[0290] If the other ends of the plurality of second patterns 102A are electrically connected to each other, the capacitances of the respective second patterns 102A are added together, so that the total impedance is reduced. Therefore, the other ends of the plurality of second patterns 102A become AC GND.

[0291] On the other hand, although not shown in the figure, the other ends of the plurality of second patterns 102A electrically connected to each other may be grounded. Also, although not shown in the figure, the other ends of the plurality of second patterns 102A may not be electrically connected to each other, and the other ends of each second pattern 102A may be connected to a predetermined capacitor.

[0292] The plurality of first patterns 101A and the plurality of second patterns 102A may be provided on the same layer. The plurality of first patterns 101A and the plurality of second patterns 102A may be formed on the same layer using a metal mesh.

[0293] One end (first side end) of the plurality of third patterns 103A is electrically connected to the control unit 300, and the other end (second side end) is electrically open. One end (first side end) is relatively close to the control unit 300, and the other end (second side end) is relatively far from the control unit 300. One end of the plurality of third patterns 103A can be electrically connected to each other through the control unit 300 and the conductive pattern.

[0294] One end (first side end) of the plurality of fourth patterns 104A may be electrically open. The other end (second side end) of the plurality of fourth patterns 104A may be electrically connected in the same manner as the plurality of second patterns 102A. One end (first side end) is relatively close to the control unit 300, and the other end (second side end) is relatively far from the control unit 300.

[0295] On the other hand, although not shown in the figure, the other ends of the plurality of fourth patterns 104A electrically connected to each other may be grounded. Also, the other ends of the plurality of fourth patterns 104A may not be electrically connected to each other, but the other ends of each fourth pattern 104A may be connected to a predetermined capacitor.

[0296] The plurality of third patterns 103A and the plurality of fourth patterns 104A may be arranged on the same layer. The plurality of third patterns 103A and the plurality of fourth patterns 104A may be formed on the same layer using a metal mesh. The plurality of third patterns 103A and the plurality of fourth patterns 104A may be arranged on a layer different from the plurality of first patterns 101A and the plurality of second patterns 102A. For example, the plurality of third patterns 103A and the plurality of fourth patterns 104A may be arranged on a first layer, and the plurality of first patterns 101A and the plurality of second patterns 102A may be arranged on a second layer different from the first layer. On the other hand, referring to Fig.30 The first to fourth patterns are described in detail in the sensing portion provided in the same layer.

[0297] The control part 300 is electrically connected to the sensing part 100A to control the operation of the sensing part 100A. The control part 300 and the sensing part 100A may be electrically connected to each other through a plurality of conductive patterns.

[0298] The control unit 300 includes a plurality of driving circuit units 310 and a plurality of detection circuit units 330. Although not shown in a separate figure, at least one of the plurality of driving circuit units 310 and the plurality of detection circuit units 330 may not be included in the control unit 300 but may be disposed outside the control unit 300.

[0299] The plurality of driving circuit units 310 include: a driving circuit unit that provides a touch driving signal for sensing a touch position of an object such as a finger to the plurality of first patterns 101A; and a driving circuit unit that provides a pen driving signal for driving a stylus pen.

[0300] The plurality of detection circuit units 330 include a detection circuit unit for receiving detection signals through the plurality of third patterns 103A and detecting the touch position of an object such as a finger, and a detection circuit unit for sensing a stylus. Among them, some of the detection circuit units can perform touch position sensing and stylus sensing.

[0301] The control unit 300 can control the sensing unit 100A to operate in any one of the touch drive / sensing mode, the antenna drive mode, and the stylus sensing mode. The control unit 300 can selectively electrically connect the plurality of drive / detection circuit units 310 and 330 to the sensing unit 100A according to each mode. To this end, the control unit 300 includes a plurality of switches that electrically connect the plurality of drive / detection circuit units 310 and 330 to the sensing unit 100A according to the instruction of the control unit 300.

[0302] right Fig.24 The operation mode of the touch input device 500 shown in FIG. Fig.24 This is shown as an example of No. 1 in the above Table 1, and therefore the description will be based on this.

[0303] In the touch driving / sensing mode, the control unit 300 can electrically connect the plurality of driving circuit units 310 to the plurality of first patterns 101A of the sensing unit 100A to sense the touch position of an object such as a finger. The control unit 300 can electrically connect the plurality of conductive patterns connected to the plurality of first patterns 101A to the plurality of driving circuit units 310 by controlling the plurality of switches.

[0304] The control unit 300 can electrically connect the plurality of detection circuit units 330 for detecting touch positions to the plurality of third patterns 103A of the sensor unit 100A. The control unit 300 can electrically connect the conductive patterns connected to the plurality of third patterns 103A to the plurality of detection circuit units 330 by controlling the plurality of switches.

[0305] In this touch driving / sensing mode, the control unit 300 can apply a driving signal (or a touch driving signal) for sensing touch to the plurality of first patterns 101A simultaneously or sequentially, and receive a detection signal (or a touch detection signal) from the plurality of third patterns 103A. The plurality of detection circuit units of the control unit 300 electrically connected to the plurality of third patterns 103A can output the capacitance change information contained in the input detection signal as a predetermined voltage value. The control unit 300 can process the output voltage value to detect the touch position.

[0306] On the other hand, in the touch driving / sensing mode, in order to prevent capacitive coupling between the plurality of first patterns 101A and the plurality of second patterns 102A, the control unit 300 may electrically connect the plurality of second patterns 102A to the plurality of driving circuit units 310. At this time, the control unit 300 may control to apply the same driving signal as the driving signal applied to the plurality of first patterns 101 to the plurality of second patterns 102A. Alternatively, the control unit 300 may control to apply a preset reference potential to the plurality of second patterns 102A when applying the driving signal to the plurality of first patterns 101A.

[0307] In the antenna driving mode (or the stylus driving mode or the stylus uplink mode), the control unit 300 can electrically connect the plurality of driving circuit units 310 for driving the antenna to the plurality of second patterns 102A of the sensing unit 100A. The control unit 300 can electrically connect the conductive patterns connected to the plurality of second patterns 102A to the plurality of driving circuit units 310 by controlling the plurality of switches.

[0308] The control unit 300 is capable of controlling the drive signal (or pen drive signal) output from each drive circuit unit 310 connected to the plurality of second patterns 102A. For example, the control unit 300 is capable of controlling: a pulse signal of a predetermined frequency is output from the first drive circuit unit among the plurality of drive circuit units 310 connected to the plurality of second patterns 102A, no pulse signal is output from the second drive circuit unit, and the third drive circuit unit outputs an inverted pulse signal with a phase opposite to that of the pulse signal output from the first drive circuit unit. In this case, a current loop is formed by the second pattern electrically connected to the first drive circuit unit and the second pattern electrically connected to the third drive circuit unit. A magnetic field is generated by the formed current loop, and the stylus pen approaching the sensing unit 100A is driven by the magnetic field.

[0309] The control unit 300 can control any two of the multiple drive circuit units 310 electrically connected to the multiple second patterns 102A to output opposite drive signals. Therefore, the control unit 300 can change and set the size or position of the current loop in various ways. For example, when the control unit 300 detects the position of the stylus pen approaching the sensing unit 100A, it can control the drive circuit units electrically connected to the two second patterns around the position of the stylus pen to output opposite pulse signals. When the position of the stylus pen is not detected, it can control the drive circuit units electrically connected to the two outermost second patterns on both sides of the multiple second patterns 102A to output opposite pulse signals.

[0310] Fig.25 For illustration Fig.24FIG. 1 is a diagram showing a method in which the control unit 300 applies a pen driving signal for driving the stylus pen to the plurality of second patterns 102A. Fig.25 middle, Fig.24 A second pattern 102A shown is simply shown as a line (Ch), and each line (Ch) becomes a channel.

[0311] like Fig.25 As shown, two adjacent second patterns are electrically connected to form a channel. In this configuration, the same signal is applied to the two electrically connected second patterns at the same time. Fig.25 It is shown that 42 channels Ch0, Ch1, ....Ch41 are formed by connecting 84 second patterns in pairs.

[0312] For example, when the stylus pen 50 is located between the second channel Ch2 and the third channel Ch3 among the 42 channels Ch0, Ch1, ...Ch41, the control unit 300 can control the pen driving signal to be output to one or more channels located on the second channel Ch2 side with the stylus pen 50 as a reference, and control the pen driving signal having a phase opposite to that of the pen driving signal to be output to one or more channels located on the third channel Ch3 side with the stylus pen 50 as a reference.

[0313] In the stylus sensing mode (or stylus down mode), the control unit 300 can electrically connect the plurality of detection circuit units 330 for sensing the stylus with the plurality of first patterns 101A and the plurality of third patterns 103A of the sensing unit 100A. The control unit 300 can electrically connect the plurality of conductive patterns connected to the plurality of first patterns 101A and the plurality of third patterns 103A with the plurality of detection circuit units 330 by controlling the plurality of switches.

[0314] The touch input device 500 according to the embodiment of the present invention has an advantage that the output voltage values ​​of the plurality of detection circuit parts 330 hardly change according to the position of the stylus on the sensing part 100A in the stylus sensing mode, depending on the configuration of the sensing part 100A. Fig.26 (a) to (f) illustrate the specific principle.

[0315] Fig.26 (a) to (f) are for brief description Fig.24 FIG. 1 is a diagram illustrating an operation principle of a touch input device in a stylus sensing mode.

[0316] Fig.26 (a) is a brief simulation Fig.24 The circuit diagram of any one of the first patterns 101A and the detection circuit unit 330 of the control unit 300 electrically connected thereto is shown. Fig.26(b) is a circuit diagram schematically simulating the second pattern 102A provided inside any of the first patterns 101A. Fig.26 (c) is Fig.26 The voltage distribution diagram in the circuit diagram of (a) is Fig.26 (d) is Fig.26 (b) Voltage distribution diagram in the circuit diagram.

[0317] refer to Fig.26 (a) and (c), when the stylus pen approaches any point A on the first pattern 101A that is as far as possible from the detection circuit unit 330, a voltage (Vemf, hereinafter referred to as "induced voltage") is generated at the corresponding point A due to the induction of the signal emitted from the stylus pen. When the induced voltage (Vemf) is generated at point A, the equivalent capacitance of the first pattern 101A observed from point A to the left becomes smaller, and the equivalent impedance becomes larger. Therefore, most of the induced voltage (Vemf) is applied to the left side of point A, and the voltage on the right side of point A is almost 0 (V), so almost no current flows. In addition, the voltage close to 0 (V) on the right side of point A gradually decreases due to the equivalent resistance of the first pattern 101A, and almost no voltage is applied to the input end of the detection circuit unit.

[0318] refer to Fig.26 In (b) and (d), when an induced voltage (Vemf) is generated at point A, the other ends of the second patterns 102A on the left side of point A are electrically connected to each other, so the equivalent capacitance observed from point A to the left becomes larger and the equivalent impedance is almost 0. Therefore, the left side of point A is 0 (V), and the right side of point A is an open circuit at one end of the second pattern 102A, so there is no voltage drop in the equivalent resistance, and Vemf is applied as it is.

[0319] Compare Fig.26 As can be seen from (c) and (d), there is a potential difference equal to Vemf at any position between the first pattern 101A and the second pattern 102A. The potential difference equal to Vemf between the first pattern 101A and the second pattern 102A causes capacitive coupling between the first pattern 101A and the second pattern 102A. Due to the capacitive coupling, Fig.26 As shown in (e), the current flows from the second pattern 102A to the first pattern 101A. The farther the position of the stylus pen is from the detection circuit unit 330 of the control unit 300, the current generated in the first pattern 101A itself gradually decreases, but since the current flows from the second pattern 102A to the first pattern 101A, the current output from the first pattern 101A to the detection circuit unit 330 of the control unit 300 is almost the same as the position of the pen. Therefore, the control unit 300 can detect the position of the stylus pen through the detection circuit unit 330 electrically connected to the first pattern 101A.

[0320] And, reference Fig.26 As can be seen from (a) to (e), even if point A moves to the left or right, the potential difference between the first pattern 101A and the second pattern 102A is constant at Vemf. Therefore, regardless of whether the position of the stylus pen on the sensor portion 100A is close to or far from the detection circuit portion, the control portion 300 can detect the stylus pen based on the constant signal output from the detection circuit portion 330.

[0321] On the other hand, Fig.26 In the description of (e), it is described that the current flows from the second pattern 102A to the first pattern 101A due to capacitive coupling, but the present invention is not limited to this. For example, the current flowing from the second pattern 102A to the first pattern 101A can be realized by magnetic coupling (magnetic field coupling).

[0322] As described above Fig.26 The principles of (a) to (e) can also be applied to any third pattern 103 and fourth pattern 104 in the second direction. Fig.16 The touch input device according to the first embodiment is shown.

[0323] Fig.26 (f) is Fig.26 The voltage distribution diagram when the right open-circuit terminal of the model circuit diagram of the second pattern 102A shown in (b) is connected to the detection circuit unit 330. That is, Fig.26 The voltage distribution diagram (f) shows that one end of the second pattern 102A is connected to the detection circuit section 330 of the control section 300. Fig.26 From (f) and (d), we can see that Fig.26 As (f) moves to the right from point A, a voltage drop occurs due to the equivalent resistance. Fig.26 (f) cannot be maintained as Fig.26 The potential difference between the first pattern and the second pattern shown in (e) is equal to Vemf, so the current cannot flow from the second pattern to the first pattern. Therefore, as the position of the pen moves away from the control unit 300, the current output from the first pattern decreases. In the stylus sensing mode, it is preferred to open one end of the second pattern 102A to float it.

[0324] when Fig.26 There is no particular problem when the screen size of the touch input device shown is the size of the screen of a smartphone, for example, 6.9 inches, but Fig.26When the screen size of the touch input device shown is increased to the size of a tablet computer screen, that is, 10 inches to 14 inches, the sensor portion 100A also becomes larger, so the resistance and capacitance values ​​of the sensor portion 100A increase. The increase in the resistance and capacitance values ​​narrows the operating frequency bandwidth of the touch drive signal applied to the touch drive electrode and the pen drive signal for driving the stylus pen, which is much narrower than that of a smartphone (6.9 inches), so there is a problem that the operating frequency bandwidth required by the design cannot be obtained.

[0325] Furthermore, the pen detection signal received from the stylus pen is also attenuated by the same amount as the increase in the sensor portion 100A. In particular, the pen detection signal at the portion of the sensor portion 100A farthest from the control portion 300 is attenuated during transmission to the control portion 300, resulting in a problem in which the voltage value required by the design cannot be output.

[0326] Next, a touch input device that can solve the above-mentioned problems will be described.

[0327] Fig. 27 for Fig.21 Detailed diagram of the touch input device shown.

[0328] refer to Fig. 27 The touch input device 500" includes a sensing portion 100A" and a control portion 300 for controlling the sensing portion 100A".

[0329] The sensing portion 100A" includes a plurality of first to fourth patterns 101A, 102A", 103A, and 104A. Figure 3 Pattern 103A, fourth pattern 104A and Fig.24 The first patterns 101A shown in FIG. Figure 3 The pattern 103A and the fourth pattern 104A are the same, so their description is omitted.

[0330] In the following, the plurality of second patterns 102A" are described, but for the sake of convenience, the second patterns 102A" are omitted. Fig.12 Description of the common portions of the plurality of second patterns 102A.

[0331] One end (first side end) of each of the plurality of second patterns 102A" can be electrically connected to the control unit 300 through a conductive pattern. Fig.24 The plurality of second patterns 102A are different.

[0332] The other ends (second side ends) of the plurality of second patterns 102A″ may be electrically connected to each other through a conductive pattern. One end is relatively close to the control unit 300 , and the other end is relatively far from the control unit 300 .

[0333] Will explain in detail Fig. 27 The operating modes of the touch input device 500 are shown.

[0334] In the touch driving / sensing mode, the control unit 300 may electrically connect the plurality of driving circuit units 310 to the plurality of first patterns 101A of the sensing unit 100A” to sense the touch position of an object such as a finger. The control unit 300 may electrically connect the plurality of conductive patterns connected to the plurality of first patterns 101A to the plurality of driving circuit units 310 by controlling the plurality of switches.

[0335] Furthermore, the control unit 300 may electrically connect a plurality of detection circuit units 330 for sensing touch positions to a plurality of third patterns 103A of the sensing unit 100A”. The control unit 300 may electrically connect a plurality of conductive patterns connected to the plurality of third patterns 103A to the plurality of detection circuit units 330 by controlling a plurality of switches.

[0336] In this touch driving / sensing mode, the control unit 300 can apply a driving signal (or a touch driving signal) for sensing touch to the plurality of first patterns 101A simultaneously or sequentially, and receive a detection signal (or a touch detection signal) from the plurality of third patterns 103A. The plurality of detection circuit units of the control unit 300 electrically connected to the plurality of third patterns 103A can output the capacitance change information contained in the input detection signal as a predetermined voltage value. The control unit 300 can process the output voltage value to detect the touch position.

[0337] In the antenna driving mode (or stylus driving mode or stylus uplink mode), the control unit 300 can electrically connect multiple driving circuit units 310 for driving the antenna with multiple second patterns 102A" of the sensing unit 100A". The control unit 300 can electrically connect multiple conductive patterns connected to the multiple second patterns 102A" with multiple driving circuit units 310 by controlling multiple switches.

[0338] The control unit 300 is capable of controlling the driving signals (or pen driving signals) output from each driving circuit unit 310 connected to the plurality of second patterns 102A". The control unit 300 is capable of controlling any two driving circuit units among the plurality of driving circuit units 310 electrically connected to the plurality of second patterns 102A" to output opposite pulse signals. Therefore, the control unit 300 is capable of changing and setting the size or position of the current loop in various ways.

[0339] In the stylus sensing mode (or stylus down mode), the control unit 300 can electrically connect the plurality of detection circuit units 330 for sensing the stylus with the plurality of second patterns (101A") and the plurality of third patterns 103A of the sensing unit 100A". Fig.12 The touch input devices shown have different stylus sensing modes.

[0340] The control unit 300 can electrically connect the plurality of conductive patterns connected to the plurality of second patterns ( 101A″) and the plurality of third patterns 103A to the plurality of detection circuit units 330 by controlling the plurality of switches.

[0341] Fig. 27 The touch input device 500" is shown with Fig.24 The difference between the touch input device shown in the figure lies in the structure of the plurality of second patterns 102A" connecting the sensing part 100A" and the control part 300. That is, Fig.24 The plurality of second patterns 102A are connected to the second conductive pattern through the control unit 300 after two adjacent second patterns are electrically connected through the first conductive pattern. Fig. 27 The plurality of second patterns 102A" are connected to the conductive pattern through the control unit 300. According to this structural feature, Fig. 27 The touch input device 500" is shown with Fig.24 Although the touch input device 500 has the disadvantage of an increased number of channels, the pen driving signal can be applied only to a specific position where the stylus is located in the antenna driving mode for driving the stylus, thereby having the advantage of reducing power consumption.

[0342] And, in Fig.24 In the touch input device 500 shown in the figure, the pattern for detecting the signal emitted from the stylus in the stylus sensing mode is a plurality of first patterns 101A in the long axis direction (L) and a plurality of third patterns 103A in the short axis direction (S). Fig. 27 In the touch input device 500 ″ shown, the patterns for detecting signals emitted from the stylus in the stylus sensing mode are a plurality of second patterns 102A″ in the long axis direction (L) and a plurality of third patterns 103A in the short axis direction (S).

[0343] If in Fig. 27 In the touch input device 500" shown in FIG. 1 , in the stylus sensing mode, the pattern in the long axis direction (L) for detecting the signal emitted from the stylus is a plurality of second patterns 102A" instead of a plurality of first patterns 101A. Fig.24 Compared with the touch input device 500 shown in the figure, the coupling capacitance between the first pattern 101A and the second pattern 102A" can be reduced, so that the operating frequency bandwidth of the touch drive signal and the touch detection signal for sensing the touch position can be increased, and the operating frequency bandwidth of the pen drive signal for driving the stylus can be increased.

[0344] Furthermore, in the stylus sensing mode, the control unit 300 receives the pen detection signal from the stylus through the plurality of second patterns 102A", and has the advantage that the voltage value of the received pen detection signal is relatively high. In particular, in the long axis direction (L), the voltage value of the pen detection signal received from the point farthest from the control unit 300 is relatively high. Fig.24 Compared with the case of , the sensing sensitivity is improved. This is because the capacitive coupling between the first pattern 101A and the second pattern 102A does not need to be considered. Fig.24 In the case of Fig.26 As described in (e), due to the capacitive coupling between the first pattern 101A and the second pattern 102A, the current flows from the second pattern 102A to the first pattern 101A, so the pen detection signal input to the control unit 300 through the first pattern 101A is attenuated. However, Fig. 27 The touch input device 500 "directly inputs the signal to the control unit 300 through the second pattern 102A" instead of through the first pattern 101A, and does not require capacitive coupling, so attenuation of the pen detection signal due to capacitive coupling does not occur.

[0345] Furthermore, each of the plurality of second patterns 102A" is composed of one channel. Therefore, when the plurality of second patterns 102A" are used as driving electrodes (Stylus TX), Fig.24 Compared with a conventional touch input device, the spacing between channels is reduced by half, thereby having the advantage of improving the driving resolution.

[0346] Fig.28 for Fig. 22 Detailed diagram of the touch input device shown.

[0347] refer to Fig.28 The touch input device 500'' includes a sensing portion 100A'' and a control portion 300 for controlling the sensing portion 100A''.

[0348] The sensing portion 100A'' includes a plurality of first to fourth patterns 101A, 102A'', 103A, and 104A'. The plurality of first patterns 101A and the third pattern 103A are Fig.24 The plurality of first patterns 101A and third patterns 103A shown are the same, and thus description thereof will be omitted.

[0349] In the following, the plurality of second patterns 102A'' and the fourth pattern 104A' are described, but for the sake of convenience, the description thereof will be omitted. Fig.24 Description of the common portions of the plurality of second patterns 102A and the fourth pattern 104A.

[0350] One ends of the plurality of second patterns 102A''' are floated, and the other ends of the plurality of second patterns 102A''' may be electrically connected to each other through a conductive pattern. One end is relatively close to the control unit 300 , and the other end is relatively far from the control unit 300 .

[0351] One end of each of the fourth patterns 104A' is electrically connected to the control unit 300 through a conductive pattern, and the other ends of each of the fourth patterns 104A' are electrically connected to each other through a conductive pattern.

[0352] Will explain in detail Fig.28 The operating modes of the touch input device 500'' are shown.

[0353] In the touch driving / sensing mode, the control unit 300 can electrically connect multiple driving circuit units 310 to multiple first patterns 101A of the sensing unit 100A″ to sense the touch position of an object such as a finger. The control unit 300 can electrically connect multiple conductive patterns connected to the multiple first patterns 101A to the multiple driving circuit units 310 by controlling multiple switches.

[0354] Furthermore, the control unit 300 can electrically connect multiple detection circuit units 330 for sensing touch positions to multiple third patterns 103A of the sensing unit 100A″. The control unit 300 can electrically connect multiple conductive patterns connected to the multiple third patterns 103A to the multiple detection circuit units 330 by controlling multiple switches.

[0355] In this touch driving / sensing mode, the control unit 300 can apply a driving signal (or a touch driving signal) for sensing touch to the plurality of first patterns 101A simultaneously or sequentially, and receive a detection signal (or a touch detection signal) from the plurality of third patterns 103A. The plurality of detection circuit units of the control unit 300 electrically connected to the plurality of third patterns 103A can output the capacitance change information contained in the input detection signal as a predetermined voltage value. The control unit 300 can process the output voltage value to detect the touch position.

[0356] In the antenna driving mode (or stylus driving mode or stylus uplink mode), the control unit 300 can electrically connect multiple driving circuit units 310 for driving the antenna with multiple fourth patterns 104A' of the sensing unit 100A"'. The control unit 300 can electrically connect multiple conductive patterns connected to multiple fourth patterns 104A' with multiple driving circuit units 310 by controlling multiple switches.

[0357] The control unit 300 can control the drive signal (or pen drive signal) output from each drive circuit unit 310 connected to the plurality of fourth patterns 104A'. The control unit 300 can control any two drive circuit units among the plurality of drive circuit units 310 electrically connected to the plurality of fourth patterns 104A' to output opposite pulse signals. Therefore, the control unit 300 can change and set the size or position of the current loop in various ways.

[0358] In the stylus sensing mode (or stylus down mode), the control unit 300 can electrically connect the plurality of detection circuit units 330 for sensing the stylus with the plurality of first patterns 101A and the plurality of fourth patterns 104A' of the sensing unit 100A''. Fig.24 The stylus sensing mode of the touch input device is different.

[0359] The control unit 300 can electrically connect the plurality of conductive patterns connected to the plurality of first patterns 101A and the plurality of fourth patterns 104A′ to the plurality of detection circuit units 330 by controlling the plurality of switches.

[0360] Fig.28 The touch input device 500'' is shown with Fig.24 The difference of the touch input device shown is that the plurality of second patterns 102A'' of the sensing portion 100A'' are electrically floating and not used, and the stylus is driven by the plurality of fourth patterns 104A'. According to this structural feature, Fig.28 The touch input device 500'' is shown with Fig.24 Although the number of channels is increased compared to the touch input device 500, there is no conductive pattern connected to one end of the plurality of second patterns 102A because the plurality of second patterns 102A are not used. Fig.24 The advantage is significantly reduced compared to

[0361] Fig.28 The touch input device shown is Fig.24 Although the number of channels is slightly increased compared to the touch input device, the pen detection signal from the stylus pen is directly received through the plurality of fourth patterns 104A', so the voltage value of the pen detection signal received by the control unit 300 becomes larger. Fig.24 The voltage value of the pen detection signal received by the control unit 300 of the touch input device is increased by about two times or more.

[0362] Furthermore, each of the plurality of fourth patterns 104A' is composed of one channel. Therefore, when the plurality of fourth patterns 104A' are used as driving electrodes (Stylus TX), Fig.24Compared with a conventional touch input device, the spacing between channels is reduced by half, thereby having the advantage of improving the driving resolution.

[0363] And, with Fig.24 Compared with the touch input device shown in the figure, the number of TX trace channels can be reduced to 1 / 4 to 1 / 3, so there is an advantage in that the thickness of the frame (B) can be reduced.

[0364] Fig.29 for Fig.23 Detailed diagram of the touch input device shown.

[0365] refer to Fig.29 The touch input device 500' includes a sensing portion 100A" and a control portion 300 for controlling the sensing portion 100A".

[0366] The sensing portion 100A" includes a plurality of first to fourth patterns 101A', 102A', 103A, and 104A. Among them, the plurality of third patterns 103A and the fourth pattern 104A are Fig.24 The plurality of third patterns 103A and fourth patterns 104A shown are the same, and thus description thereof will be omitted.

[0367] In the following, a plurality of first patterns 101A' and second patterns 102A' are described, but for the sake of convenience, the description thereof will be omitted. Fig.24 Description of the common portions of the plurality of first patterns 101A and the second patterns 102A.

[0368] The first pattern 101A' has a shape extending along a first direction. The first direction may be a long axis direction (L) of a screen of a touch input device. The first pattern 101A' includes a 1a pattern 101a' and a 1b pattern 101b'. The 1a pattern 101a' and the 1b pattern 101b' are arranged along the first direction and spaced apart by a predetermined interval. The first pattern 101A' including the 1a pattern 101a' and the 1b pattern 101b' may also be named ATX (Active TX).

[0369] The second pattern 102A' has a shape extending along the first direction, is disposed adjacent to the first pattern 101A', and is separated from the first pattern 101A' by a predetermined interval. The second pattern 102A' includes a 2a pattern 102a' and a 2b pattern 102b'. The 2a pattern 102a' and the 2b pattern 102b' are arranged along the first direction and separated by a predetermined interval. The second pattern 102A' including the 2a pattern 102a' and the 2b pattern 102b' can also be named DTX (Dummy TX).

[0370] In the case of the plurality of first patterns 101A', one end of the plurality of first patterns 101a' is electrically connected to the control unit 300, and the other end is electrically open. Also, one end of the plurality of first patterns 101b' is electrically connected to the control unit 300, and the other end is electrically open. One end is relatively close to the control unit 300, and the other end is relatively far from the control unit 300.

[0371] One ends of the plurality of 1a patterns 101a' may be electrically connected to each other through the control unit 300 and the conductive pattern. The plurality of conductive patterns for connecting the plurality of 1a patterns 101a' and the control unit 300 may be arranged inside the frame (B) of the touch input device 500 along the short axis direction (S).

[0372] One ends of the plurality of 1b patterns 101b' may be electrically connected to each other through the control unit 300 and the conductive pattern. The plurality of conductive patterns for connecting the plurality of 1b patterns 101b' and the control unit 300 may be arranged inside the frame (B) of the touch input device 500 along the short axis direction (S).

[0373] In the case of multiple second patterns 102A', two adjacent ends of one end of multiple 2a patterns 102a' are electrically connected to each other through the first conductive pattern and then electrically connected to the second conductive pattern through the control unit 300, and the other ends of multiple 2a patterns 102a' are electrically connected to each other through the conductive pattern. Similarly, two adjacent ends of one end of multiple 2b patterns 102b' are electrically connected to each other through the first conductive pattern and then electrically connected to the second conductive pattern through the control unit 300, and the other ends of multiple 2b patterns 102b' are electrically connected to each other through the conductive pattern. Among them, one end is relatively close to the control unit 300, and the other end is relatively far away from the control unit 300.

[0374] The second conductive pattern for connecting the plurality of 2a and 2b patterns (102a', 102b') and the control unit 300 may be arranged along the short axis direction (S) inside the frame (B) of the touch input device 500'. The second conductive pattern for connecting the plurality of 2a and 2b patterns (102a', 102b') and the control unit 300 and the conductive pattern (not shown) for connecting the plurality of first patterns 101A' and the control unit 300 may be arranged inside the frame (B) of the touch input device 500.

[0375] If the other ends of the plurality of 2a patterns 102a' are electrically connected to each other, the capacitances of the respective 2a patterns 102a' are added together, so that the total impedance is reduced. Therefore, the other ends of the plurality of 2a patterns 102a' become AC GND. Similarly, if the other ends of the plurality of 2b patterns 102b' are electrically connected to each other, the capacitances of the respective 2b patterns 102b' are added together, so that the total impedance is reduced. Therefore, the other ends of the plurality of 2b patterns 102b' become AC GND.

[0376] right Fig.29 The operation mode of the touch input device 500 ′ is described in detail.

[0377] In the touch driving / sensing mode, the control unit 300 can electrically connect the plurality of driving circuit units 310 to the plurality of first patterns 101A' of the sensing unit 100A' to sense the touch position of an object such as a finger. The control unit 300 can electrically connect the plurality of conductive patterns connected to the plurality of first patterns 101A' to the plurality of driving circuit units 310 by controlling the plurality of switches.

[0378] The control unit 300 can electrically connect the plurality of detection circuit units 330 for detecting touch positions to the plurality of third patterns 103A of the sensor unit 100A'. The control unit 300 can electrically connect the plurality of conductive patterns connected to the plurality of third patterns 103A to the plurality of detection circuit units 330 by controlling the plurality of switches.

[0379] In this touch driving / sensing mode, the control unit 300 can apply a driving signal (or a touch driving signal) for sensing touch to the plurality of first patterns 101A' simultaneously or sequentially, and receive a detection signal (or a touch detection signal) from the plurality of third patterns 103A. The plurality of detection circuit units of the control unit 300 electrically connected to the plurality of third patterns 103A can output the capacitance change information contained in the input detection signal as a predetermined voltage value. The control unit 300 can process the output voltage value to detect the touch position.

[0380] In the antenna driving mode (or the stylus driving mode or the stylus uplink mode), the control unit 300 may electrically connect the plurality of driving circuit units 310 for driving the antenna to the plurality of 2a patterns 102a' and the plurality of 2b patterns 102b' of the sensing unit 100A'. The control unit 300 may electrically connect the plurality of conductive patterns connected to the plurality of 2a patterns 102a' and the plurality of 2b patterns 102b' to the plurality of driving circuit units 310 by controlling the plurality of switches.

[0381] The control unit 300 can control the drive signals (or pen drive signals) output from each drive circuit unit 310 connected to the plurality of 2a patterns 102a' and the plurality of 2b patterns 102b'. The control unit 300 can control any two drive circuit units among the plurality of drive circuit units 310 electrically connected to the plurality of 2a patterns 102a' and the plurality of 2b patterns 102b' to output opposite pulse signals. Therefore, the control unit 300 can change and set the size or position of the current loop in various ways.

[0382] In the stylus sensing mode (or stylus down mode), the control unit 300 may electrically connect the plurality of detection circuit units 330 for sensing the stylus with the plurality of first patterns 101A' and the plurality of third patterns 103A' of the sensing unit 100A'. The control unit 300 may electrically connect the plurality of conductive patterns connected to the plurality of first patterns 101A' and the plurality of third patterns 103A with the plurality of detection circuit units 330 by controlling the plurality of switches.

[0383] Fig.29 The touch input device 500′ is shown with Fig.24 The difference between the touch input device shown in FIG. 1 and FIG. 2 is that the plurality of first patterns 101A' and the second pattern 102A' of the sensing portion 100A' are structured. That is, the plurality of first patterns 101A' and the second pattern 102A' are structured as follows: Fig.24 The first pattern 101A and the second pattern 102A are obtained by dividing them into two halves, so the number is the same as Fig.24 The number of the first patterns 101A is twice as many as the number of the second patterns 102A.

[0384] According to this structural feature, Fig.29 The touch input device 500′ is shown with Fig.24 Although the touch input device 500 has the disadvantage of an increased number of channels, the pen driving signal can be applied only to a specific position where the stylus is located in the antenna driving mode for driving the stylus, thereby having the advantage of reducing power consumption.

[0385] and, Fig.29 The touch input device shown is Fig.24 Although the touch input device has the disadvantage of slightly increasing the number of channels compared to the touch input device, the length of each of the first pattern 101A' and the second pattern 102A' is reduced by half, and the resistance value and the capacitance value are reduced. Therefore, it has the advantage of being able to expand the operating frequency bandwidth of the touch drive signal applied to the pattern of the touch drive electrode used as the sensing part 100A' and the pen drive signal for driving the stylus.

[0386] Fig.30 For a brief display Fig.16 or Fig.19FIG. 2 is a diagram showing a modification of the sensor unit 100 , 100 ′ shown in FIG.

[0387] Fig.30 The sensor part 100B shown can be used as the sensor part of the touch input device according to the aforementioned embodiments of the present invention. Therefore, the specific structure and shape of the sensor part 100B are described below, and the driving method of the touch input device including the sensor part 100B can refer to the above content.

[0388] refer to Fig.30 The sensing portion 100B includes a plurality of first to fourth patterns 101A, 102A, 103B, and 104B. The plurality of first to fourth patterns 101A, 102A, 103B, and 104B are disposed together on the same layer.

[0389] The first pattern 101A has a shape extending along a first direction (width direction). The first direction may be the long axis direction of the screen of the touch input device. The first pattern 101A may also be named ATX (Active TX). The first pattern 101A has a predetermined shape in which an electrical path is formed along the first direction (width direction).

[0390] The first pattern 101A includes a plurality of main pattern portions and a connection pattern portion for connecting two adjacent main pattern portions among the plurality of main pattern portions. The main pattern portion has a rhombus shape, but is not limited thereto and may have various shapes different from the connection pattern portion.

[0391] The first pattern 101A has an opening in which the second pattern 102A is disposed. The shape of the opening may correspond to the appearance of the first pattern 101A. The first pattern 101A has a structure surrounding the second pattern 102A. The first pattern 101A may be spaced apart from the second pattern 102A by a predetermined distance.

[0392] The second pattern 102A has a shape extending along the first direction, is disposed adjacent to the first pattern 101A, and is separated from the first pattern 101A by a predetermined distance. The second pattern 102A may also be named DTX (Dummy TX). The second pattern 102A has a predetermined shape adjacent to the first pattern 101A and having an electrical path formed along the first direction (width direction).

[0393] The second pattern 102A is provided inside the first pattern 101A.

[0394] The second pattern 102A includes a plurality of main pattern portions and a connection pattern portion for connecting two adjacent main pattern portions among the plurality of main pattern portions. The main pattern portion has a rhombus shape, but is not limited thereto and may have various shapes different from the connection pattern portion.

[0395] The main pattern portion of the second pattern 102A has a shape corresponding to the main pattern portion of the first pattern 101A, and the connection pattern portion of the second pattern 102A has a shape corresponding to the connection pattern portion of the first pattern 101A.

[0396] The other ends (second side ends) of the plurality of second patterns 102A may be electrically connected to each other via the second conductive pattern D2 .

[0397] The third pattern 103B is arranged one above and one below based on a connection pattern portion of the first pattern 101A. The third pattern 103B has a rhombus shape, but is not limited thereto and has various shapes different from the connection pattern portion. The third pattern 103B has an opening portion in which the fourth pattern 104B is arranged. The shape of the opening portion may correspond to the appearance of the third pattern 103B. The third pattern 103B has a structure surrounding the fourth pattern 104B. The third pattern 103B may be separated from the fourth pattern 104B by a predetermined distance. The third pattern 103B may also be named ARX (Active RX), and the fourth pattern 104B may also be named DRX (Dummy RX).

[0398] The third patterns arranged along the second direction perpendicular to the first direction among the plurality of third patterns 103B are electrically connected through the third conductive pattern D3. Therefore, the plurality of third patterns arranged along the second direction can be electrically connected through the plurality of third conductive patterns D3. Fig.16 or Fig.19 The electrical connection directions (electrical paths) of the third patterns 103 shown are the same.

[0399] The connection pattern portions of the first pattern 101A disposed between two adjacent third patterns in the third conductive pattern D3 are arranged to cross each other. The third conductive pattern D3 can also be named as a conductive bridge. Both ends of the third conductive pattern D3 are connected to through holes connected to the third pattern 103B.

[0400] The fourth patterns arranged along the second direction perpendicular to the first direction among the plurality of fourth patterns 104B are electrically connected through the fourth conductive pattern D4. Therefore, the plurality of fourth patterns arranged along the second direction can be electrically connected through the plurality of fourth conductive patterns D4, and Fig.16 or Fig.19 The electrical connection direction (electrical path) of the fourth pattern 104 shown is the same.

[0401] The connection pattern portion of the first pattern 101A disposed between two adjacent fourth patterns in the fourth conductive pattern D4 is cross-arranged. Furthermore, the fourth conductive pattern D4 electrically connects the fourth pattern 104B that is farthest from the control portion and arranged along the first direction among the plurality of fourth patterns 104B. The fourth conductive pattern D4 can also be named as a conductive bridge. Both ends of the fourth conductive pattern D4 are connected to through holes connected to the fourth pattern 104B.

[0402] The first to fourth patterns 101A, 102A, 103B, 104B are arranged on the same layer (first layer), and the second to fourth conductive patterns D2, D3, D4 are arranged on the same layer (second layer). The first layer and the second layer are physically and electrically separated from each other.

[0403] Fig.31 for Fig.30 A modified example of the sensor portion shown.

[0404] refer to Fig.31 In the case of the sensing part, the 1-1 pattern part located at the first side and / or the second side end among the plurality of 1-1 pattern parts has a shape open along the first direction (or transverse direction). Therefore, the 1-2 pattern part located at the first side and / or the second side end among the plurality of 1-2 pattern parts can be exposed to the outside.

[0405] The 1-2 pattern parts located at the second side end of the plurality of 1-2 pattern parts are electrically connected to each other not through the through hole but through the connection pattern. The connection pattern may be a conductive trace. Fig.37 In contrast, the 1-2 pattern portion located at the second side end among the plurality of 1-2 pattern portions is not connected via a through hole, but is disposed on the same layer as the connection pattern.

[0406] Furthermore, in the case of the sensing portion, the 2-1 pattern portion located at the first side and / or the second side end among the plurality of 2-1 pattern portions has a shape open along the second direction (or longitudinal direction). Therefore, the 2-2 pattern portion located at the first side and / or the second side end among the plurality of 2-2 pattern portions can be exposed to the outside.

[0407] The 2-2 pattern portions located at the second side end of the plurality of 2-2 pattern portions are electrically connected to each other not through the through hole but through the connection pattern. The connection pattern may be a conductive trace. Fig.37 In contrast, the 2-2 pattern portion located at the second side end among the plurality of 2-2 pattern portions is not connected via a through hole, but is disposed on the same layer as the connection pattern.

[0408] Fig.31The sensing unit shown is also controlled by the control unit 300 to drive any one of the touch sensing mode, antenna driving mode and stylus sensing mode. Specifically, in the touch sensing mode, the control unit 300 controls the touch driving signal to be applied to ATX1, ATX2, ATX3, and receives the touch receiving signal from ARX1, ARX2, ARX3 to detect the touch position. In the antenna driving mode, the control unit 500 can apply the pen driving signal to DTX1, DTX2, DTX3, or apply the pen driving signal to DRX1, DRX2, DRX3. In the stylus sensing mode, the control unit 500 can receive the pen receiving signal from ATX1, ATX2, ATX3 and ARX1, ARX2, ARX3 and detect the position of the stylus. In addition, multiple combinations of Table 1 can be applied to Fig.31 Therefore, Fig.31 The sensing part may be driven in various ways by the control part 300 in any one of the touch sensing mode, the antenna driving mode, and the stylus sensing mode.

[0409] Fig.32 A diagram showing another modified example of the sensor portion.

[0410] refer to Fig.32 The structure of the main pattern portion of the first to fourth patterns 101', 102', 103', 104' is the same as Fig.24 different.

[0411] Fig.32 The periphery of the second pattern 102' or the fourth pattern 104' has a concavo-convex structure, and the opening of the first pattern 101' or the fourth pattern 104' has a shape corresponding to the periphery structure of the second pattern 102' or the fourth pattern 104'.

[0412] In this structure, the mutual capacitance (Cm) value between the first pattern 101' and the second pattern 102' can be increased in the same layer, and the mutual capacitance (Cm) value between the third pattern 103' and the fourth pattern 104' can be increased in another same layer. As the mutual capacitance (Cm) gradually increases, the voltage value output from the detection circuit part of the control part 300 in the stylus sensing mode can be increased. Therefore, the stylus sensing sensitivity can be improved.

[0413] in, Fig.32 The modified examples shown can also be applied to the sensor parts according to the aforementioned embodiments.

[0414] Fig.33 This is another variation of the sensor unit.

[0415] Fig.33 The sensing portion 100" shown is Fig.24The difference of the sensor portion 100A shown is that it further includes a plurality of fifth patterns 105 and a plurality of sixth patterns 106 .

[0416] The plurality of fifth patterns 105 are provided in the same layer (second layer) as the plurality of first patterns 101 , and are arranged in a plurality along the first direction and the second direction.

[0417] Each fifth pattern 105 has a shape corresponding to and overlapping a portion of the main pattern portion of the third pattern 103 provided in a different layer (first layer). The fifth pattern 105 is electrically connected to the fourth pattern 104 provided in a different layer (first layer) through a through hole.

[0418] The plurality of fifth patterns 105 can form mutual capacitance (Cm) in the vertical direction with the plurality of third patterns 103. Furthermore, the fifth pattern 105 is electrically connected to the fourth pattern 104 inside the third pattern 103, so the third pattern 103 forms mutual capacitance (Cm) not only with the fourth pattern 104 but also with the fifth pattern 105.

[0419] The plurality of sixth patterns 106 are provided in the same layer (first layer) as the plurality of third patterns 103 , and are arranged in plurality along the first direction and the second direction.

[0420] Each sixth pattern 106 has a shape corresponding to and overlapping a portion of the main pattern portion of the first pattern 101 provided in a different layer (second layer). Furthermore, the sixth pattern 106 is electrically connected to the second pattern 102 provided in a different layer (second layer) through a through hole.

[0421] The plurality of sixth patterns 106 can form mutual capacitance (Cm) in the vertical direction with the plurality of first patterns 101. Furthermore, the sixth pattern 106 is electrically connected to the second pattern 102 inside the first pattern 101, so the first pattern 101 forms mutual capacitance (Cm) not only with the second pattern 102 but also with the sixth pattern 105.

[0422] Like this, Fig.33 The sensing portion 100" shown can form mutual capacitance not only in the horizontal direction of the first pattern 101, but also in the vertical direction, and can form mutual capacitance in the horizontal and vertical directions of the third pattern 103. Therefore, the voltage value output from the detection circuit portion of the control portion 500 in the stylus sensing mode can be increased, thereby improving the stylus sensing sensitivity.

[0423] in, Fig.33 The modified examples shown can also be applied to the sensor parts according to the aforementioned embodiments.

[0424] Fig.34 This is another variation of the sensor unit.

[0425] Fig.34 The sensing portion 100"' shown is Fig.24 The difference of the sensor part 100A shown is that a part of the second pattern 102' is arranged on a different layer from the rest. Specifically, the second pattern 102' includes a plurality of main pattern parts and a connecting pattern part for connecting two adjacent main pattern parts among the plurality of main pattern parts, and the plurality of main pattern parts of the second pattern 102' and the plurality of connecting pattern parts of the second pattern 102' are arranged on different layers.

[0426] The plurality of main pattern portions of the second pattern 102' are disposed on the same layer as the third pattern 103 and the fourth pattern 104, and the plurality of connecting pattern portions of the second pattern 102' are disposed on the same layer as the third pattern 103 and the fourth pattern 104. Fig.24 Similarly, it is provided on the same layer as the first pattern 101 .

[0427] Fig.34 The sensing portion 100"' shown is also Fig.24 The sensor unit 100A shown in FIG. 1 can also be driven by the control unit 300 in the touch sensing mode, antenna driving mode, and stylus sensing mode. In addition, multiple combinations of Table 1 can be applied to Fig.34 Therefore, Fig.34 The sensing portion 100 ′″ may be driven in various ways by the control portion 300 in any one of the touch sensing mode, the antenna driving mode, and the stylus sensing mode.

[0428] Fig.35 This is another variation of the sensor unit.

[0429] Fig.35 The sensing portion 100"" shown is Fig.34 The difference of the sensing portion 100'' shown is that a part of the fourth pattern 104' is arranged on a different layer from the rest. Specifically, the fourth pattern 104' includes a plurality of main pattern portions and a connecting pattern portion for connecting two adjacent main pattern portions among the plurality of main pattern portions, and the plurality of main pattern portions of the fourth pattern 104' are arranged on a layer different from the plurality of connecting pattern portions of the fourth pattern 104'. The plurality of main pattern portions of the fourth pattern 104' are arranged on the same layer as the first pattern 101, and the plurality of connecting pattern portions of the fourth pattern 104' are arranged on the same layer as the plurality of main pattern portions of the second pattern 102' and the third pattern 103.

[0430] In summary, Fig.35In the sensing part 100'' shown, the first pattern 101, the multiple connection pattern parts of the second pattern 102', and the multiple main pattern parts of the fourth pattern 104' are arranged on the first layer, and the third pattern 103, the multiple connection pattern parts of the fourth pattern 104', and the multiple main pattern parts of the second pattern 102' are arranged on the second layer. The first layer and the second layer are different layers, and the positional relationship is that one layer can be placed on top of another layer.

[0431] Fig.35 The sensing portion 100"" shown can also be used with Fig.24 The sensor unit 100A shown in the figure is also driven by the control unit 300 in the touch sensing mode, antenna driving mode, and stylus sensing mode. In addition, multiple combinations of Table 1 can be applied to Fig.35 The sensing part 100”. Therefore, Fig.35 The sensing part 100 ″″ may be driven in any one of the touch sensing mode, the antenna driving mode, and the stylus sensing mode by the control part 300 in various ways.

[0432] Fig.36 This is another variation of the sensor unit.

[0433] Fig.36 The sensing portion 100""' shown is Fig.35 A variation of the sensor portion 100"" is shown. Fig.36 The sensing portion 100""' shown is Fig.35 The difference of the sensor portion 100"" shown is the second pattern 102" and the fourth pattern 104".

[0434] Specifically, the second pattern 102" includes a plurality of main pattern portions 102a" and a plurality of connecting pattern portions 102b'. The size of the main pattern portion 102a" is larger than Fig.35 The sensor portion 100 ″″ is shown as a main pattern portion of the second pattern 102 ′. The main pattern portion 102 a ″ has a size and shape corresponding to the main pattern portion of the first pattern 101 .

[0435] Furthermore, the fourth pattern 104" includes a plurality of main pattern portions 104a" and a plurality of connecting pattern portions 104b', and the size of the main pattern portion 104a" is larger than Fig.35 The sensor portion 100 ″″ is shown as a main pattern portion of the fourth pattern 104 ′. The main pattern portion 104 a ″ has a size and shape corresponding to the main pattern portion of the third pattern 103 .

[0436] Since the size of the main pattern portion 102a" of the second pattern 102" is larger than Fig.35The main pattern portion of the second pattern 102' is formed, so the corresponding area with the first pattern 101 becomes larger, so that the mutual capacitance (Cm) between the second pattern 102" and the first pattern 101 can be further improved. Therefore, the stylus sensing sensitivity can be further improved in the stylus sensing mode.

[0437] Furthermore, since the size of the main pattern portion 104a" of the fourth pattern 104" is larger than Fig.35 The main pattern portion of the fourth pattern 104' is formed, so the corresponding area with the third pattern 103 becomes larger, so that the mutual capacitance (Cm) between the fourth pattern 104" and the third pattern 104 can be further improved. Therefore, the stylus sensing sensitivity can be further improved in the stylus sensing mode.

[0438] Fig.37 This is a diagram showing still another modified example of the sensor portion.

[0439] Fig.37 The sensing portion 100""" shown is Fig.24 The difference of the sensor portion 100A shown is that the other ends (second side ends) of the plurality of second patterns 102 and the other ends (second side ends) of the plurality of fourth patterns 104 are electrically connected to each other.

[0440] According to such a structure, when the sensor unit 100 ′ is driven in the stylus sensing mode, one fourth pattern 104 is electrically connected not only to the fourth pattern but also to the plurality of second patterns 102 , so the impedance is lower.

[0441] Fig.37 The sensing portion 100""" shown is also Fig.24 The sensor unit 100A shown in FIG. 1 can also be driven by the control unit 300 in the touch sensing mode, antenna driving mode, and stylus sensing mode. In addition, multiple combinations of Table 1 can be applied to Fig.37 The sensing part 100”””. Therefore, Fig.37 The sensing part 100 ″″ may be driven in any one of the touch sensing mode, the antenna driving mode, and the stylus sensing mode by the control part 300 in various ways.

[0442] Fig.38 This is another variation of the sensor unit.

[0443] Fig.38 The sensing portion 100"""' shown is Fig.24 The difference of the sensor part 100A shown is that the second pattern 102' and the fourth pattern 104' further include a plurality of fifth patterns 105' and a plurality of sixth patterns 106', and also include capacitors (cap) electrically connected to the fifth pattern 105' and the sixth pattern 106'. Since the rest of the structures are the same, the differences will be described in detail below.

[0444] The second pattern 102' may be a bar pattern disposed inside the first pattern 101 and extending along the second direction. The second pattern 102' has a constant width. The second pattern 102' may be disposed on the same layer (second layer) as the first pattern 101.

[0445] The fourth pattern 104' may be a bar pattern disposed inside the third pattern 103 and extending along the first direction. The fourth pattern 104' has a constant width. The fourth pattern 104' may be disposed on the same layer (first layer) as the third pattern 103.

[0446] The plurality of fifth patterns 105 ′ are provided in the same layer (second layer) as the plurality of first patterns 101 and are arranged in plurality along the first direction and the second direction. The plurality of fifth patterns 105 ′ are arranged in plurality between the plurality of first patterns 101 .

[0447] Each fifth pattern 105' has a shape corresponding to and overlapping a portion of the main pattern portion of the third pattern 103 provided on a different layer (first layer). The fifth pattern 105' is electrically connected to the fourth pattern 104' provided on a different layer (first layer) through a through hole.

[0448] The fifth pattern 105' electrically connected to one fourth pattern 104' among the plurality of fifth patterns 105' can be arranged along the second direction. Among the fifth patterns 105' arranged along the second direction, the fifth pattern 105' arranged at the other side edge is connected to a predetermined capacitor cap. And the capacitor cap can be grounded. Among the fifth patterns 105' arranged along the second direction, the fifth pattern 105' arranged at the other side edge is connected to the predetermined capacitor cap. Fig.24 The control unit 300 is shown as the farthest pattern in electrical connection distance. Although not shown in a separate figure, the capacitor cap may be connected between the fifth pattern 105' and the ELVSS of the display panel (not shown). Also, one end of the capacitor cap may be connected to the fifth pattern 105', and the other end may be connected to a different layer (first layer) where the third pattern 103, the fourth pattern 104', and the sixth pattern 106' are provided.

[0449] The fifth patterns 105' can form mutual capacitance (Cm) in the vertical direction with the third patterns 103. Furthermore, the fifth pattern 105' is electrically connected to the fourth pattern 104' inside the third pattern 103, so the third pattern 103 forms mutual capacitance (Cm) not only with the fourth pattern 104' but also with the fifth pattern 105'.

[0450] The plurality of sixth patterns 106 are provided in the same layer (first layer) as the plurality of third patterns 103 and are arranged in plurality along the first direction and the second direction.

[0451] Each sixth pattern 106' has a shape corresponding to and overlapping a portion of the main pattern portion of the first pattern 101 provided on a different layer (second layer). The sixth pattern 106' is electrically connected to the second pattern 102' provided on a different layer (second layer) through a through hole.

[0452] The sixth pattern 106' electrically connected to one second pattern 102' among the plurality of sixth patterns 106' can be arranged along the first direction. Among the sixth patterns 106' arranged along the first direction, the sixth pattern 106' arranged at the other side edge is connected to a predetermined capacitor cap. And the capacitor cap can be grounded. Among the sixth patterns 106' arranged along the first direction, the sixth pattern 106' arranged at the other side edge is connected to the predetermined capacitor cap. Fig.24 The control unit 300 is shown as the farthest pattern in electrical connection distance. Although not shown in a separate figure, the capacitor cap may be connected between the sixth pattern 106' and the ELVSS of the display panel (not shown). Also, one end of the capacitor cap may be connected to the sixth pattern 106', and the other end may be connected to a different layer (second layer) where the first pattern 101, the second pattern 102', and the fifth pattern 105' are provided.

[0453] The sixth patterns 106' can form mutual capacitance (Cm) in the vertical direction with the first patterns 101. Moreover, the sixth pattern 106' is electrically connected to the second pattern 102' inside the first pattern 101, so the first pattern 101 forms mutual capacitance (Cm) not only with the second pattern 102' but also with the sixth pattern 106'.

[0454] Like this, Fig.38 The sensing portion 100'''' shown can form mutual capacitance not only in the horizontal direction of the first pattern 101, but also in the vertical direction, and can form mutual capacitance in the horizontal and vertical directions of the third pattern 103. Therefore, in the stylus sensing mode, the voltage value output from the detection circuit portion of the control portion 300 can be increased, thereby improving the stylus sensing sensitivity.

[0455] Furthermore, the second pattern 102' and the fourth pattern 104' are Fig.24 The second pattern 102 and the fourth pattern 104 of the sensing portion 100A do not have a main pattern portion in a diamond shape, so when the display panel is located below the sensing portion 100'', Fig.24Compared with the sensor unit 100A, it has the advantage of being able to further improve visibility.

[0456] Fig.39 The sensing portion 100"""' shown is also Fig.24 The sensor unit 100A shown in FIG. 1 can also be driven by the control unit 300 in the touch sensing mode, antenna driving mode, and stylus sensing mode. In addition, multiple combinations of Table 1 can be applied to Fig.39 The sensing part 100”””’. Therefore, Fig.39 The sensing portion 100''''' can be driven in any one of the touch sensing mode, the antenna driving mode and the stylus sensing mode by the control portion 300 in various ways.

[0457] On the other hand, although not shown in a separate drawing, a capacitor (cap) can be electrically connected to the other ends of the plurality of second patterns 102 and the fourth pattern 104, respectively, without the fifth pattern 105' and the sixth pattern 106'. Furthermore, in the sensing portion according to the aforementioned embodiments, the other ends of the plurality of second and fourth patterns are not connected to each other, but each other end is connected to a capacitor.

[0458] Fig.39 This is another variation of the sensor unit.

[0459] exist Fig.24 In the case of the sensing part 100A, when the stylus pen 1 is located at the right edge (or left edge) of the sensing part 100A, it is difficult to provide a sufficient magnetic field signal with the stylus pen 1, so there may be a problem that the signal sent from the stylus pen 1 is not large enough. In order to solve this problem, Fig.39 The sensing portion 100"""" is shown in Fig.24 The sensor portion 100A shown further includes a first trace t1 and a second trace t2 .

[0460] The first trace t1 and the second trace t2 are directly connected to the conductive trace to for connecting the other ends of the plurality of second patterns 102, and are arranged in a passive area outside the active area tp (or touch area) of the touch input device. At least a portion of the conductive trace to is also arranged outside the active area tp. The active area tp refers to an area that can be directly touched by an object, such as a finger or a stylus 50, and a passive area is arranged around the active area tp. The passive area can be, for example, a bezel area.

[0461] Specifically, the first trace t1 is set in the passive area outside the active area tp, one end of which is directly connected to the conductive trace to, and the other end can be connected to the driving circuit part of the control part 300 through the switch sw in any one of the touch driving mode, touch sensing mode, antenna driving mode, and stylus sensing mode.

[0462] The second trace t2 is disposed in the passive region outside the active region tp, one end of which is directly connected to the conductive trace to, and the other end of which can be connected to the driving circuit portion of the control portion 500 through the switch sw in the antenna driving mode.

[0463] The first trace t1 surrounds one of the left and right sides of the active region tp and is disposed in the inactive region, and the second trace t2 surrounds the other side of the active region tp and is disposed in the inactive region.

[0464] The first trace t1 and the second trace t2 are formed on the sensing portion 100”””” Fig.25 When the antenna driving mode shown is driven, even if the stylus pen 1 is located at one edge of the active area tp, sufficient magnetic field signals can be provided to the stylus pen 1. Fig.39 The touch input device of the sensing portion 100 ”””” shown can enable the stylus pen 1 to receive sufficient magnetic field signals and send sufficient signals no matter where the stylus pen 1 is located in the active area tp.

[0465] Fig.39 The first trace t1 and the second trace t2 of the sensing part 100"""" are respectively responsible for Fig.25 A channel in which you can apply Fig.25 The driving method shown.

[0466] Fig.39 The sensing portion 100"""" shown is also Fig.24 The sensor unit 100A shown in FIG. 1 can also be driven by the control unit 300 in the touch sensing mode, antenna driving mode, and stylus sensing mode. In addition, multiple combinations of Table 1 can be applied to Fig.39 The sensing part 100””””. Therefore, Fig.39 The sensing portion 100 ”””” may be driven in any one of a touch sensing mode, an antenna driving mode, and a stylus sensing mode by the control portion 300 in various ways.

[0467] Fig.40 For illustration Fig.33 FIG. 5 is a diagram showing a first variation of the fifth pattern 105 shown in FIG.

[0468] refer to Fig.40 The fifth pattern 105 ′ is provided on a layer different from the third pattern 103 and the fourth pattern 104 .

[0469] The fifth pattern 105' has a shape corresponding to the third pattern 103. For example, the fifth pattern 105' has a rhombus shape and has a rhombus-shaped opening inside.

[0470] A portion of the fifth pattern 105' may overlap the third pattern 103 in the vertical direction, and another portion may overlap the fourth pattern 104 in the vertical direction. For example, the outer edge portion of the fifth pattern 105' may overlap the inner edge portion of the third pattern 103 disposed in a different layer. The inner edge portion of the fifth pattern 105' may overlap the outer edge portion of the fourth pattern 104 disposed in a different layer.

[0471] The fifth pattern 105 ′ can be electrically connected to the fourth pattern 104 disposed on a different layer through a conductive through hole v. There can be a plurality of through holes v disposed at the outer edge of the fourth pattern 104 .

[0472] Such a fifth pattern 105' can form a mutual capacitance (Cm) in a vertical direction with the third pattern 103 disposed on a different layer. Moreover, the fifth pattern 105' can be electrically connected to the fourth pattern 104 inside the third pattern 103 through the through hole v, so the third pattern 103 can form a mutual capacitance (Cc_tx) not only with the fourth pattern 104 disposed on the same layer, but also with the fifth pattern 105' disposed on a different layer.

[0473] Although not shown in a separate drawing, Fig.33 The sixth pattern 106 shown also has Fig.40 The sixth pattern (not shown) has the same shape as the fifth pattern 105' shown. At this time, the outer edge portion of the sixth pattern (not shown) may overlap with the inner edge portion of the first pattern 101 disposed on a different layer, and the inner edge portion of the sixth pattern (not shown) may overlap with the outer edge portion of the second pattern 102 disposed on a different layer. Furthermore, the sixth pattern (not shown) may be electrically connected to the second pattern 102 disposed on a different layer through a conductive via. Similarly, such a sixth pattern (not shown) may also form a mutual capacitance with the first pattern 101 in the vertical direction, and the sixth pattern (not shown) is electrically connected to the second pattern 102 inside the first pattern 101, so that the first pattern 101 may form a mutual capacitance (Cm) not only with the second pattern 102, but also with the sixth pattern (not shown).

[0474] Like this, including Fig.40 The sensor portion of the modified example of the fifth pattern 105' shown can form mutual capacitance in the horizontal direction and the vertical direction of the third pattern 103, and the sensor portion of the modified example including the sixth pattern (not shown) can also form mutual capacitance in the horizontal direction and the vertical direction of the first pattern 101. Therefore, the voltage value output from the detection circuit portion of the control portion in the stylus sensing mode can be increased, thereby improving the stylus sensing sensitivity.

[0475] Fig.41 for Fig.40 A variation of .

[0476] Fig.40 The fifth pattern 105' is shown to be disposed below the third pattern 103 and the fourth pattern 104. Fig.41 It is shown that the fifth pattern 105 ′ is disposed above the third pattern 103 and the fourth pattern 104 .

[0477] Figure 40 to Figure 41 The structure of the fifth pattern 105 ′ shown can be applied to the sensor unit according to the above-mentioned embodiments.

[0478] Fig.42 For illustration Fig.40 A modified example of the fifth pattern 105' is shown.

[0479] refer to Fig.42 The shape and position of the fifth pattern 105" are similar to Fig.40 The fifth pattern 105' is the same as the fifth pattern 105'. Fig.40 The difference of the fifth pattern 105 ′ shown is that the fifth pattern 105 ″ is electrically connected to the third pattern 103 disposed on a different layer through a conductive via v. In addition, the via v is disposed at the inner edge portion of the third pattern 103 .

[0480] The fifth pattern 105 ″ is electrically connected to the third pattern 103 disposed on a different layer, so the fourth pattern 104 can form a mutual capacitance (Cc_Tx) with the fifth pattern 105 ″ in a vertical direction.

[0481] Fig.42 The sensor portion of the modified example including the fifth pattern 105" shown also has the advantage of being able to form mutual capacitance in the horizontal direction and the vertical direction.

[0482] Fig.43 for Fig.42 A variation of .

[0483] Fig.42 The fifth pattern 105" is shown to be arranged below the third pattern 103 and the fourth pattern 104, and Fig.43 The fifth pattern 105 ″ is displayed and arranged above the third pattern 103 and the fourth pattern 104 .

[0484] Figure 42 to Figure 43 The structure of the fifth pattern 105 ′ shown can be applied to the sensor unit according to the above-mentioned embodiments.

[0485] Fig.44 and Fig.45 For illustration Fig.34 or Fig.35 FIG. 2 is a diagram showing a modified example of the third pattern 103 and the fourth pattern 104 in the sensor portion shown.

[0486] refer to Fig.44 and Fig.45 According to the modified example, the third pattern 103 and the fourth pattern 104 are respectively arranged in different layers, and a part of the third pattern 103 overlaps a part of the fourth pattern 104 in the vertical direction. For example, the inner edge of the third pattern 103 can overlap the outer edge of the fourth pattern 104 in the vertical direction. FIG. 51 shows that the third pattern 103 is arranged above the fourth pattern 104, and Fig.45 The third pattern 103 is displayed below the fourth pattern 104 .

[0487] include Fig.44 and Fig.45 The sensing parts of the third pattern 103 and the fourth pattern 104 shown can form mutual capacitance (Cc_Tx) in the horizontal direction and the vertical direction. Although not shown in a separate figure, Fig.34 and Fig.35 The first pattern 101 and the second pattern 102 shown also have Fig.44 and Fig.45 The structure shown.

[0488] Figure 44 to Figure 45 The structure according to the modified example shown can be applied to the sensor section according to the above-described embodiments.

[0489] Although the embodiments of the present invention are described in detail above, the protection scope of the present invention is not limited thereto, and various modifications and improvements made by technicians in the field to which the present invention belongs also belong to the scope of rights of the present invention.

Claims

1. A touch input device for driving a stylus pen including a resonant circuit portion and detecting a pen signal from the stylus pen, characterized in that: include: Covering layer; a sensing portion, disposed below the cover layer, comprising at least one pattern for driving the stylus pen and detecting the stylus signal; A display unit, disposed below the sensor unit; and A shielding portion is disposed below the display portion, The shield portion has a magnetic permeability and a thickness such that a rate of change of the inductance value of the resonance circuit portion is -10% to +10% of a reference inductance value.

2. The touch input device according to claim 1, characterized in that: The magnetic permeability of the shielding portion is greater than or equal to 10 and less than or equal to 300.

3. The touch input device according to claim 1, characterized in that: The shield portion has a thickness of 10 μm or more and 300 μm or less.

4. The touch input device according to claim 1, characterized in that: The shielding portion includes a magnetic field shielding sheet and a conductive layer disposed below the magnetic field shielding sheet. The increase in the inductance value of the resonant circuit portion caused by the magnetic field shielding sheet is the same as the decrease in the inductance value of the resonant circuit portion caused by the conductive layer, or the sum of the increase and the decrease is -10% to +10% of the reference inductance value.

5. The touch input device according to claim 1, characterized in that: The inductance value of the resonant circuit portion when the stylus pen is moved upward from the touch surface of the touch input device to a predetermined height is -10% to +10% of the inductance value of the resonant circuit portion when the stylus pen is located on the touch surface.

6. The touch input device according to claim 1, characterized in that: The inductance value of the resonant circuit portion when the stylus pen is vertically placed on the touch surface of the touch input device and then tilted at a predetermined angle is -10% to +10% of the inductance value of the resonant circuit portion when the stylus pen is vertically placed on the touch surface.

7. The touch input device according to claim 1, characterized in that: The shielding portion includes a magnetic field shielding sheet and a conductive layer disposed below the magnetic field shielding sheet. The conductive layer includes at least one slit.

8. The touch input device according to claim 7, characterized in that: The slit has a shape extending long from one side edge of the conductive layer toward the inner side of the conductive layer.

9. The touch input device according to claim 7, characterized in that: The slit has a dotted line shape formed along a transverse direction and / or a longitudinal direction of the conductive layer.

10. A touch input device for driving a stylus pen including a resonant circuit portion and detecting a pen signal from the stylus pen, characterized in that: include: Covering layer; a sensing portion, disposed below the cover layer, comprising at least one pattern for driving the stylus pen and detecting the stylus signal; A display unit, disposed below the sensor unit; A magnetic field shielding sheet, arranged below the display portion; and A conductive layer is disposed below the magnetic field shielding sheet. The conductive layer includes at least one slit.

11. The touch input device according to claim 10, characterized in that: The slit has a shape extending long from one side edge of the conductive layer toward the inner side of the conductive layer.

12. The touch input device according to claim 10, characterized in that: The slit has a dotted line shape formed along a transverse direction and / or a longitudinal direction of the conductive layer.

13. The touch input device according to claim 10, characterized in that: Also includes: The frame is arranged below the conductive layer and is made of conductive material. The frame has an opening corresponding to at least a part of the slit of the conductive layer.

14. The touch input device according to claim 13, characterized in that: The frame further includes a filling member made of a non-conductive material disposed in the opening of the frame.

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