WO2020055089A1 - Touch sensor panel - Google Patents

Abstract

Provided is a touch sensor panel which can reduce phenomena, which cause a signal sensed by low-ground mass (LGM) to disappear or a signal indicating that two or more points have been touched to appear, in a touch sensor panel having a driving electrode and a reception electrode arranged on the same layer. In one embodiment of the present invention, a plurality of driving electrodes are arranged adjacent to one reception electrode, and three or more reception electrodes connected to the same sensing terminal are not consecutively arranged in each row, or reception electrodes connected to the same reception terminal are not arranged in the same row and the same column.

Description

Touch sensor panel

The present invention relates to a touch sensor panel, and more particularly, to a touch sensor panel that improves touch sensing performance without holding the device by hand.

Various types of input devices are used for the operation of computing systems. For example, input devices such as buttons, keys, joysticks and touch screens are used. Due to the easy and simple operation of the touch screen, the use of the touch screen is increasing when the computing system is operated.

The touch screen may constitute a touch surface of a touch input device including a touch sensor panel, which may be a transparent panel having a touch-sensitive surface. The touch sensor panel is attached to the front side of the display screen so that the touch-sensitive surface can cover the visible side of the display screen. It allows the user to operate the computing system by simply touching the touch screen with a finger or the like. In general, a computing system can perform operations accordingly by recognizing touches and touch locations on a touch screen and interpreting these touches.

The touch sensor panel applies a driving signal to the driving electrode and determines whether or not it is touched from a signal input through the receiving electrode. The driving electrode and the receiving electrode may be formed on different layers or may be formed on the same layer. An example in which the driving electrode and the receiving electrode are formed on the same layer is US Patent Publication US2013 / 0181942. When the driving electrode and the receiving electrode are formed on different layers, the cost increases, so it is preferable to form them on the same layer. However, even if the driving electrode and the receiving electrode are implemented on the same layer, there is a need to reduce the number of wires, or variously change the electrode arrangement type of the touch sensor panel with the reduced number of wires to reduce noise or suppress unnecessary signal generation. Needs to be.

In addition, when the driving electrode and the receiving electrode are implemented on the same layer, a signal sensed by a low ground mass (LGM) disappears when a device in which a touch sensor panel such as a smartphone is mounted is not touched by hand. Alternatively, a signal may appear as being touched from two or more points.

The present invention is derived by the above-mentioned necessity, and the signal sensed by the low ground mass (LGM) disappears from the touch sensor panel in which the driving electrode and the receiving electrode are disposed on the same layer, or the signal is touched at two or more points. It is an object of the present invention to provide a touch sensor panel capable of improving the phenomenon.

According to an embodiment of the present invention, a plurality of driving electrodes and a plurality of receiving electrodes formed on the same layer, including at least one electrode group consisting of the same receiving electrode, included in one of the electrode groups, the same sensing The same receiving electrode connected to the terminal is arranged so that 4 or more do not appear.

According to another embodiment of the present invention, a plurality of driving electrodes and a plurality of receiving electrodes formed on the same layer, including at least one electrode group consisting of the same driving electrode, included in one of the electrode groups to drive the same The same driving electrode connected to the terminal is disposed so that 4 or more do not appear.

According to another embodiment of the present invention, in a touch sensor panel including a plurality of driving electrodes and a plurality of receiving electrodes formed on the same layer, a plurality of driving electrodes are disposed adjacent to one side of one receiving electrode, and the same receiving A plurality of receiving electrodes are connected to the terminal, and a plurality of driving electrodes are connected to the same driving terminal. The plurality of receiving electrodes connected to the same receiving terminal are not arranged in the same column, and the number of receiving electrodes connected to the same receiving terminal and arranged in the same row is three or less.

Preferably, a plurality of receiving electrodes connected to the same receiving terminal are arranged in a row spaced apart from each other by at least one row and three columns away from each other.

A plurality of driving electrodes connected to the same driving terminal may be arranged in one or more spaced apart from each other. In one embodiment, a plurality of driving electrodes connected to the same driving terminal are arranged in a column spaced at least five rows from each other.

According to another embodiment of the present invention, in a touch sensor panel including a plurality of driving electrodes and a plurality of receiving electrodes formed on the same layer, a plurality of receiving electrodes are disposed adjacent to one side of one driving electrode, and the same receiving A plurality of receiving electrodes are connected to the terminal, and a plurality of driving electrodes are connected to the same driving terminal. The plurality of driving electrodes connected to the same driving terminal are not arranged in the same column, and the number of driving electrodes connected to the same driving terminal and arranged in the same row is three or less.

Preferably, the plurality of driving electrodes connected to the same driving terminal are arranged in a row spaced apart from each other by at least one row and three columns away from each other.

A plurality of receiving electrodes connected to the same receiving terminal may be arranged in one or more spaced apart from each other. In one embodiment, a plurality of receiving electrodes connected to the same receiving terminal are arranged in a column spaced at least five columns from each other.

According to an embodiment of the present invention, a signal sensed by a low ground mass (LGM) disappears from a touch sensor panel in which a driving electrode and a reception electrode are disposed on the same layer, or a signal appears as being touched at two or more points. I can do it. Accordingly, the touch sensing performance can be improved.

1A is a configuration diagram of a touch sensor panel, and FIGS. 1B to 1D are views showing arrangements of touch sensors implemented on different layers or touch sensors implemented on the same layer.

2 is a view showing an arrangement form of a touch sensor implemented on the same layer according to an embodiment of the present invention.

FIG. 3 is a view briefly showing only the number of the touch sensor among the touch sensor panels of FIG. 2.

4 to 6 are views for explaining the principle of generating the LGM interference signal and a method for improving the same.

7 is a view showing an electrode arrangement in a touch sensor panel according to an embodiment of the present invention.

8 is a view showing another electrode arrangement form in a touch sensor panel according to an embodiment of the present invention.

9 is a view showing another electrode arrangement in the touch sensor panel according to an embodiment of the present invention.

FIG. 10 is a view showing a separation distance between receiving electrodes connected to the same receiving terminal in the embodiment of FIG. 9.

For a detailed description of the present invention, which will be described later, reference is made to the accompanying drawings that illustrate, by way of example, specific embodiments in which the present invention may be practiced. These examples are described in detail enough to enable those skilled in the art to practice the present invention. It should be understood that the various embodiments of the present invention are different, but need not be mutually exclusive. For example, certain shapes, structures, and properties described herein may be implemented in other embodiments without departing from the spirit and scope of the invention in relation to one embodiment. In addition, it should be understood that the location or placement of individual components within each disclosed embodiment can be changed without departing from the spirit and scope of the invention. Therefore, the following detailed description is not intended to be taken in a limiting sense, and the scope of the present invention, if appropriately described, is limited only by the appended claims, along with all ranges equivalent to those claimed. In the drawings, similar reference numerals refer to the same or similar functions across various aspects.

Hereinafter, a touch input device 1000 according to an embodiment of the present invention will be described with reference to the accompanying drawings. Hereinafter, the capacitive touch sensor panel 1 is illustrated, but the same or similar application may be applied to the touch sensor panel 1 which can detect a touch position in an arbitrary manner.

1A is a schematic diagram of a capacitive touch sensor 10 included in a touch sensor panel 1 of a general touch input device 1000 and a configuration for its operation. Referring to FIG. 1A, the touch sensor 10 includes a plurality of driving electrodes TX1 to TXn and a plurality of receiving electrodes RX1 to RXm, and a plurality of driving electrodes for operating the touch sensor 10 ( TX1 to TXn), the driver 12 applying a driving signal, and a plurality of receiving electrodes RX1 to RXm to receive a sensing signal including information on a change in capacitance that changes according to a touch on a touch surface and touch And it may include a sensing unit 11 for detecting the touch position.

As shown in FIG. 1A, the touch sensor 10 may include a plurality of driving electrodes TX1 to TXn and a plurality of receiving electrodes RX1 to RXm. In FIG. 1A, the plurality of driving electrodes TX1 to TXn and the plurality of receiving electrodes RX1 to RXm of the touch sensor 10 are shown to form an orthogonal array, but the present invention is not limited thereto, and the plurality of driving The electrodes TX1 to TXn and the plurality of receiving electrodes RX1 to RXm may have any number of dimensions and their application arrangements, including diagonal, concentric circles, and 3D random arrays. Here, n and m are positive integers, and may have the same or different values, and may have different sizes according to embodiments.

The plurality of driving electrodes TX1 to TXn and the plurality of receiving electrodes RX1 to RXm may be arranged to cross each other. The driving electrode TX includes a plurality of driving electrodes TX1 to TXn extending in the first axis direction, and the receiving electrode RX includes a plurality of receiving electrodes extending in the second axis direction crossing the first axis direction ( RX1 to RXm).

1B, the plurality of driving electrodes TX1 to TXn and the plurality of receiving electrodes RX1 to RXm may be formed on different layers. For example, one of the plurality of driving electrodes TX1 to TXn and the plurality of receiving electrodes RX1 to RXm is formed on the upper surface of the display panel 200A, and the other is formed on the lower surface of the cover, which will be described later, or the display panel It may be formed in the interior of (200A).

In addition, as shown in FIGS. 1C and 1D, in the touch sensor 10 according to an embodiment of the present invention, the plurality of driving electrodes TX1 to TXn and the plurality of receiving electrodes RX1 to RXm are on the same layer. Can be formed. For example, the plurality of driving electrodes TX1 to TXn and the plurality of receiving electrodes RX1 to RXm may be formed on the upper surface of the display panel.

The plurality of driving electrodes TX1 to TXn and the plurality of receiving electrodes RX1 to RXm are ITO (Indium Tin Oxide) or ATO made of a transparent conductive material (for example, tin oxide (SnO2) and indium oxide (In2O3)). (Antimony Tin Oxide)). However, this is only an example, and the driving electrode TX and the receiving electrode RX may be formed of other transparent conductive materials or opaque conductive materials. For example, the driving electrode TX and the receiving electrode RX may include at least one of silver ink, copper, nano silver, and carbon nanotube (CNT). You can. Further, the driving electrode TX and the receiving electrode RX may be implemented as a metal mesh.

The driving unit 12 according to an embodiment of the present invention may apply a driving signal to the driving electrodes TX1 to TXn. In an embodiment of the present invention, the driving signal may be sequentially applied to one driving electrode from the first driving electrode TX1 to the nth driving electrode TXn at a time. The application of the driving signal may be repeatedly performed. This is only an example, and a driving signal may be simultaneously applied to a plurality of driving electrodes according to an embodiment.

The sensing unit 11 provides information on the capacitances Cm: 14 generated between the driving electrodes TX1 to TXn to which the driving signal is applied through the receiving electrodes RX1 to RXm and the receiving electrodes RX1 to RXm. It is possible to detect whether or not the touch and the touch position by receiving the detection signal. For example, the sensing signal may be a signal in which the driving signal applied to the driving electrode TX is coupled by the capacitance Cm: 14 generated between the driving electrode TX and the receiving electrode RX. As described above, the process of detecting the driving signal applied from the first driving electrode TX1 to the nth driving electrode TXn through the receiving electrodes RX1 to RXm will be referred to as scanning the touch sensor 10. You can.

For example, the sensing unit 11 may include each receiving electrode RX1 to RXm and a receiver (not shown) connected through a switch. The switch is turned on in a time interval for detecting the signal of the corresponding receiving electrode RX, so that the sensing signal from the receiving electrode RX can be detected by the receiver. The receiver may include an amplifier (not shown) and a negative (-) input terminal of the amplifier and an output terminal of the amplifier, that is, a feedback capacitor coupled to a feedback path. At this time, the positive (+) input terminal of the amplifier may be connected to ground. In addition, the receiver may further include a reset switch connected in parallel with the feedback capacitor. The reset switch can reset the current-to-voltage conversion performed by the receiver. The sub-input terminal of the amplifier is connected to the corresponding receiving electrode RX to receive the current signal including the information on the capacitance (Cm: 14) and then integrate it to convert it into a voltage. The sensing unit 11 may further include an analog-to-digital converter (ADC) that converts data integrated through the receiver into digital data. Subsequently, digital data may be input to a processor (not shown) and processed to obtain touch information for the touch sensor 10. The sensing unit 11 may include a receiver, an ADC, and a processor.

The control unit 13 may perform a function of controlling the operation of the driving unit 12 and the sensing unit 11. For example, the control unit 13 may generate a driving control signal and transmit it to the driving unit 12 so that the driving signal is applied to the preset driving electrode TX at a predetermined time. In addition, the control unit 13 generates a detection control signal and transmits it to the detection unit 11 so that the detection unit 11 receives a detection signal from a preset receiving electrode RX at a predetermined time to perform a preset function. can do.

In FIG. 1A, the driving unit 12 and the sensing unit 11 may constitute a touch detection device (not shown) capable of detecting whether the touch sensor 10 is touched or not and a touch position. The touch detection device may further include a control unit 13. The touch detection device may be implemented by being integrated on a touch sensing integrated circuit (IC). The driving electrode TX and the receiving electrode RX included in the touch sensor 10 are included in the touch sensing IC through, for example, a conductive trace and / or a conductive pattern printed on a circuit board. It can be connected to the drive unit 12 and the sensing unit (11). The touch sensing IC may be located on a circuit board printed with a conductive pattern, for example, a touch circuit board (hereinafter referred to as a touch PCB). According to an embodiment, the touch sensing IC may be mounted on the main board for the operation of the touch input device 1000.

As described above, a capacitance Cm of a predetermined value is generated at each intersection of the driving electrode TX and the receiving electrode RX, and when an object such as a finger approaches the touch sensor 10, such capacitance The value of can be changed. In FIG. 1A, the capacitance may indicate mutual capacitance (Cm). The electrical characteristics may be detected by the sensing unit 11 to detect whether the touch sensor 10 is touched and / or a touch location. For example, it is possible to detect whether and / or the position of the touch on the surface of the touch sensor 10 made of a two-dimensional plane composed of a first axis and a second axis.

More specifically, by detecting the driving electrode TX to which the driving signal is applied when the touch to the touch sensor 10 occurs, the position of the touch in the second axis direction can be detected. Similarly, by detecting a change in capacitance from the received signal received through the receiving electrode RX when the touch sensor 10 is touched, the position of the touch in the first axis direction can be detected.

1C and 1D, when the driving electrode and the receiving electrode are disposed on the same layer, the number of wirings may increase. Therefore, based on FIG. 2, a touch sensor panel having a reduced number of wires will be described, and then an electrode connection method based on the touch sensor panel will be described. However, in FIG. 2 and the following drawings, the receiving electrode is first disposed and then illustrated based on the form in which the driving electrode is disposed, but the scope of the present invention is not limited thereto, and the driving electrode is first disposed and then the receiving electrode is disposed. In the case of form, the present invention can be applied equally / similarly.

2 is a form of another type of touch sensor panel in which a driving electrode and a receiving electrode are disposed on the same layer. 1D, one receiving electrode is disposed adjacent to each of the four driving electrode columns each having four driving electrodes, but in FIG. 2, the same reception is performed to the left of four driving electrode columns each having three driving electrodes. The electrodes are arranged adjacently. Meanwhile, the present invention is not limited to three or four driving electrodes arranged in correspondence with one receiving electrode, and two or more driving electrodes may be arranged. In the case of FIG. 2, there is a difference in wiring between the drive electrodes compared to FIG. 1D. According to the electrode connection method according to the embodiment of FIG. 2, compared to the electrode connection method of the embodiment of FIG. 1D, the number of wires is reduced. For example, when the electrode connection method of FIG. 1D is applied based on the electrode shape of FIG. 2 (not shown), 12 + 12 * 8 = 108 wirings are required. On the other hand, if the electrode connection method of FIG. 2 is applied based on the shape of the electrode of FIG. 2, 4 * 8 + 3 * 8 = 64 wires are required.

2, 3, and 7, for convenience, all electrodes of the touch sensor panel are not displayed, and only some electrodes are briefly indicated by numbers. However, this is a part of the electrode to illustrate the concept of the present invention, and electrodes may be additionally disposed on the right side and / or the lower side.

As shown in FIG. 3A, an arbitrary cell area (in the dotted area of FIG. 3, an arbitrary touch area, a plurality of identical receiving electrodes RX1) and corresponding driving electrodes TX1 to TX12 It is defined as the area to be included.) A plurality of the same receiving electrode RX1 is disposed, and a signal sensed when it is a low ground mass (hereinafter referred to as LGM). ”) Will increase relatively. And, as a result, the finally output capacitance change amount ( _ΔC ) becomes small. In particular, in the case of a big touch (in the present invention, a case having a larger area than the touch area of the rest of the fingers, such as the touch area of the thumb is defined as big touch), the LGM interference signal is relatively larger.

Specifically, the final output value (capacity change amount ( _ΔC )) is split by the LGM interference signal as shown in FIG. 4, or the final output value (capacity change amount ( _ΔC )) is almost disappeared by the LGM interference signal as shown in FIG. Will be.

As shown in FIG. 4A, when the surface of the touch sensor panel 1 is touched with the thumb, the normal output value (in a normal situation in which the LGM interference signal does not occur in the finger touch area, as shown in FIG. 4B) The capacitance change amount ( _ΔC ) is obtained, but it can be seen that in a situation in which an LGM interference signal is generated, a final output value (a capacitance change amount ( _ΔC )) lower than a normal output value is output. Under normal circumstances, the amount of capacitance change ( _△ C, e.g. -10) is composed of only the '-' capacitance value (Cm, e.g. -10). By C _{LGM ,} eg> +3), a lower capacitance change ( _△ C, eg> -7) is obtained.

While the normal output value forms a curve, in a situation in which an LGM interference signal occurs, the signal is split in the middle to form a peak, which results in two curves. For example, a normal situation illustrates a situation in which a finger touches the surface of the touch input device 1000 while the user grips the touch input device 1000 and the finger acts as a normal ground. And, in the situation where the LGM interference signal occurs, the touch input device 1000 touches the surface of the touch input device 1000 while lying on the floor, so that the finger does not act as a normal ground by floating. Illustrates a situation that cannot.

5, the thumb touch area gradually increases, and the number of the same receiving electrodes RX1 included in the touch area gradually increases. (1 in State 1-> 3 in State 2-> 4 in State 3)

In the finger touch area, in the normal situation where the LGM interference signal does not occur, the capacitance change amount ( _△ C, eg> -10) consists of only the '-' capacitance value (Cm, eg> -10), but the LGM interference signal is large The amount of change in capacitance ( _ΔC ) almost disappears in a situation that has occurred. As described above, it can be seen that when the number of the same receiving electrode RX1 increases, the size of the LGM interference signal gradually increases, and as a result, the final output value (capacity change amount ( _ΔC )) is almost disappeared.

As a result, as illustrated in FIG. 6A, when the driving electrode and the receiving electrode are connected to a conductive object having a low ground (LOW GROUND), a separate current path is generated, and through this path, a TX signal is transmitted to the RX electrode and touched normally. An LGM interference signal opposite to the signal is generated.

On the other hand, as described above, according to the electrode arrangement form of the touch sensor panel of FIG. 3, a plurality of identical receiving electrodes RX1 are disposed in an arbitrary cell area, so that the generation amount of LGM is relatively large. That is, the number of the same receiving electrode RX1 disposed in the touch area is large as shown in FIG. 6B (a), or the number of the same driving electrodes TX1 disposed in the touch area as shown in FIG. 6B (b). If there are many, it can be seen that the number of LGM interference signals is relatively high. Accordingly, the number of the same receiving electrode RX1 disposed in the touch area as shown in (a) of FIG. 6C is reduced, or the number of the same driving electrode TX1 disposed in the touch area as shown in FIG. 6C (b) is reduced. It is preferred.

Hereinafter, a method of reducing the LGM interference signal by changing the number of the same receiving electrodes RX disposed in the touch area will be described with reference to FIG. 7. However, in the present invention, it has been exemplified to change the number of the same receiving electrodes RX disposed in the touch area as shown in (a) of FIG. 6C, but the scope of the present invention is not limited thereto, and (b) of FIG. 6C ), Even if the number of the same driving electrodes TX disposed in the touch area is changed, the present invention can be applied equally or similarly.

FIG. 7A conceptually illustrates an arbitrary cell area (dashed line area in FIG. 3B) among electrodes of a conventional touch sensor panel, and FIGS. 7B and 7C target an arbitrary cell area in FIG. 7A, An arrangement form of a touch sensor (driving electrode and / or receiving electrode) according to an embodiment is illustrated. As can be seen in the figure, a plurality of driving electrodes are disposed adjacent to one receiving electrode.

In the figure, K, X, Y, and Z indicated in the RX column indicate that the corresponding receiving electrodes are connected to K, X, Y, and Z sensing terminals of the sensing unit 11, respectively. In the case of FIG. 7B, for example, the receiving electrodes in columns (A) and (B) are connected to the K sensing terminal of the sensing unit 11, for example, the sensing terminal 1, and (C) and (D) ) The receiving electrode in the column indicates that it is connected to the X sensing terminal of the sensing unit 11, for example, the sensing terminal 5. That is, in FIG. 7A, four receiving electrodes connected to the same sensing terminal in each row are arranged in succession, and in FIG. 7B, two receiving electrodes connected to the same sensing terminal in each row appear in succession. In the case of FIG. 7C, receiving electrodes connected to the same sensing terminal in each row are arranged so that they do not appear one after another.

7A to 7C show only a part of the entire electrode pattern, and as shown in FIG. 7D, the same number (ie, connected to the same sensing terminal) of the receiving electrode and / or the same number (as shown in FIG. 7D) That is, at least some of the driving electrodes (connected to the same driving terminal) may be arranged. According to an embodiment, driving electrodes disposed in the same column may be configured to repeat the same arrangement pattern. For example, in the case of FIG. 7D, the driving electrodes a, b, and c may be repeatedly arranged in the column (E ′).

For reference, each embodiment of FIGS. 3 and 7 is based on the premise that the same combination of the driving electrode and the receiving electrode cannot be repeated in other areas of the touch sensor pattern. That is, the combination of electrodes such as RX (1) -TX (1) -RX (1) or RX (1) -TX (4) -RX (1) of FIG. 3A is performed in another area of the touch sensor pattern of FIG. 3A. It cannot appear repeatedly, meaning that each combination must be unique within the touch sensor pattern. This is a required condition because only one touch coordinate cannot be extracted because it means that when any arbitrary electrode combination is repeated within the touch sensor pattern, more than one touch coordinate occurs.

As described above, FIG. 7A conceptually illustrates an arbitrary cell region (dotted region in FIG. 3B) of the touch sensor pattern in FIG. 3B. In FIG. 7A, four RX (1) s are repeated in an arbitrary cell region, which is denoted by the same K.

According to the embodiment of FIG. 7A, the number (a) of sensor groups including the same receiving electrode RX ((K)) in the touch sensor pattern and a driving electrode disposed immediately adjacent thereto is one. In addition, the number (b) of the same receiving electrodes RX ((K)) disposed in the corresponding sensor group is four. Therefore, the number (c) of drive electrode groups including a drive electrode corresponding to one receiving electrode RX ((K)) is five according to the formula (c = a * b + a), and finally a required driving channel The number (d) of 15 is (d = c * 3).

7B is an implementation example of changing a touch sensor connection according to the first embodiment. FIG. 7B can reduce the size of the LGM interference signal by reducing the number of the same receiving electrodes RX1 disposed in the touch area as shown in FIG. 6C (a). Specifically, FIG. 7B reduces the number of the same receiving electrodes RX1 and K disposed in the touch area to 1/2 compared to FIG. 7A, so that the size of the LGM interference signal can be reduced up to 1/2 compared to FIG. 7A. do. That is, in FIG. 7B, it can be seen that two of the same receiving electrodes RX1 and K are repeated in any one cell region. (See circular dotted area)

In the case of FIG. 7B, the number of driving electrodes disposed around the same receiving electrode disposed in the same sized touch area as compared to FIG. 7A is required more. This means that the combination between the driving electrode and the receiving electrode cannot appear repeatedly in other areas of the touch sensor pattern, and when it is desired to satisfy the premise that each combination is unique within the touch sensor pattern, the same receiving electrode disposed in any one cell area This is because a separate new driving electrode is disposed around the same receiving electrode, which is partially separated and placed in a region other than the arbitrary one cell region. That is, a separate driving electrode disposed around the separated same receiving electrode may be connected to a new driving terminal. However, this does not mean that physically separate driving electrodes are newly arranged, but that a new channel is formed in a form in which some of the original driving electrodes are connected to the new driving terminals, thereby changing the arrangement of the touch sensors.

According to the embodiment of FIG. 7B, the number (a) of sensor groups including the same receiving electrode RX ((K)) in the touch sensor pattern and the driving electrode disposed immediately adjacent thereto is two. And, the number (b) of the same receiving electrode RX ((K)) disposed in the corresponding sensor group is two. Therefore, the number (c) of drive electrode groups including drive electrodes corresponding to one receiving electrode RX ((K)) is six according to the above formula (c = a * b + a), and is finally required The number (d) of driving channels is 18 (d = c * 3).

According to the embodiment of FIG. 7B, since the number of sensor groups (a) has been increased by one more compared to the embodiment of FIG. 7A, the number of drive electrode groups (c) has also increased, and accordingly, It can be seen that the number d is also increased in proportion to this.

7C is an implementation example of changing a touch sensor connection according to the second embodiment. FIG. 7C can reduce the size of the LGM interference signal by reducing the number of the same receiving electrodes RX1 disposed in the touch area as shown in FIG. 6C (a). Specifically, FIG. 7C reduces the number of the same receiving electrodes RX1 and K disposed in the touch area to 1/4 compared to FIG. 7A, and the size of the LGM interference signal can be reduced to a maximum of 1/4 compared to FIG. 7A. do. That is, in FIG. 7C, it can be seen that one of the same receiving electrodes RX1 and K is disposed in any one cell region. (See circular dotted area)

In the case of FIG. 7C, the number of driving electrodes disposed around the same receiving electrode disposed in the same size of the touch area is required as compared to FIGS. 7A and 7B. This means that the combination between the driving electrode and the receiving electrode cannot appear repeatedly in other areas of the touch sensor pattern, and when it is desired to satisfy the premise that each combination is unique within the touch sensor pattern, the same receiving electrode disposed in any one cell area This is because a separate new driving electrode is disposed around the same receiving electrode, which is partially separated and placed in a region other than the arbitrary one cell region. That is, a separate driving electrode disposed around the separated same receiving electrode may be connected to a new driving terminal. However, this does not mean that physically separate driving electrodes are newly arranged, but that a new channel is formed in a form in which some of the original driving electrodes are connected to the new driving terminals, thereby changing the arrangement of the touch sensors.

According to the embodiment of FIG. 7C, the number (a) of sensor groups including the same receiving electrode RX ((K)) in the touch sensor pattern and the driving electrodes disposed immediately adjacent thereto is four. In addition, the number (b) of the same receiving electrodes RX ((K)) disposed in the corresponding sensor group is one. Therefore, the number (c) of drive electrode groups including drive electrodes corresponding to one receiving electrode RX ((K)) is eight according to the above formula (c = a * b + a), and is finally required. The number (d) of driving channels is 24 (d = c * 3).

According to the embodiment of FIG. 7C, compared to the embodiment of FIG. 7A, the number of sensor groups (a) is increased by three more, so the number of drive electrode groups (c) is also increased by three, and accordingly It can be seen that the number of channels (d) is also increased by 9 in proportion to this.

However, in FIGS. 7A to 7C, the receiving electrode is first disposed and then the driving electrode is illustrated based on the arrangement, but the scope of the present invention is not limited thereto, and the driving electrode is first disposed and then the receiving electrode is disposed. In the case of form, the present invention can be applied equally / similarly.

Meanwhile, the above-described embodiments in FIGS. 7B to 7C can be applied to the same / similar cases in the following cases.

For example, in the embodiment described above in FIGS. 7B and 7C, the order of the driving electrodes corresponding to the first receiving electrode (eg, a-> b-> c) and the first receiving electrode in the same column as in FIG. 7D. In addition to the case in which the order of the driving electrodes corresponding to the arranged second receiving electrode (eg, a-> b-> c) is implemented in the same manner, the order of the driving electrode corresponding to the first receiving electrode as shown in FIG. 7E (eg , a-> b-> c) and the driving electrode corresponding to the second receiving electrode disposed in the same column as the first receiving electrode (for example, c-> b-> a) is implemented in a different manner. / Can be applied similarly.

In addition, the above-described embodiment in FIG. 7C can be applied when the number of driving electrodes corresponding to each receiving electrode is three as shown in FIG. 7A, and the driving electrodes corresponding to each receiving electrode as shown in FIGS. 8A and 8B are It can also be applied when the number is 4 or 2 or 5 or more.

For example, as shown in FIG. 8, the number of driving electrodes corresponding to one receiving electrode is four, and in particular, the order of driving electrodes corresponding to the first receiving electrode as illustrated in FIG. 8A (eg, 1-> 2-> 3- > 4) and the driving electrode corresponding to the second receiving electrode disposed in the same column as the first receiving electrode (for example, 1-> 2-> 3-> 4) is implemented in the same manner as described above in FIG. 7C. The principle of can be applied equally / similarly.

In addition, as shown in FIG. 8B, the order of the driving electrodes corresponding to the first receiving electrode (eg, 1-> 2-> 3-> 4) and the driving corresponding to the second receiving electrode arranged in the same row as the first receiving electrode Even when the order of the electrodes (eg, 4-> 3-> 2-> 1) is implemented differently, the above-described principle of FIG. 7C can be applied identically / similarly.

In addition, the embodiments described above with reference to FIGS. 7 and 8 may be applied not only to the case where the shape of each driving electrode / receiving electrode is a rectangular pattern, but also to a variety of diamond patterns and circular patterns.

In addition, in all cases of FIGS. 7 and 8, the receiving electrode is first disposed and then illustrated on the basis of the arrangement in which the driving electrode is disposed, but the scope of the present invention is not limited thereto, and the driving electrode is first disposed and subsequently received The present invention can be applied in the same / similar manner even in the case where the electrode is disposed.

9 is a view showing an electrode arrangement according to another embodiment of the present invention. 9 illustrates a case in which four driving electrodes are disposed adjacent to one side of one receiving electrode in a touch sensor panel including a plurality of driving electrodes and a plurality of receiving electrodes formed on the same layer. In FIG. 9, the same number indicates an electrode connected to the same terminal. For example, the receiving terminal to which the receiving electrode 1 of the upper left (1 column, 1 row) is connected is 1 receiving electrode of 1 row, 17 columns, 1 receiving electrode of 3 rows, 13 columns, 1 receiving electrode of 5 rows, 9 columns, The receiving electrodes of 7 rows and 5 columns are connected. Here, the row number and the column number indicate the number of the receiving electrode row and the receiving electrode column for the receiving electrode, and indicate the number of the driving electrode column for the driving electrode.

In the embodiment of FIG. 9, a plurality of receiving electrodes connected to the same receiving terminal are not arranged in the same column, and the number of receiving electrodes connected to the same receiving terminal and arranged in the same row is 3 or less, and the example of FIG. 9 The maximum is two. For example, No. 1 receiving electrode is arranged in columns 1, 5, 9, 13, and 17 and is not disposed in the same column, and only one receiving electrode is disposed in one row and the other receiving electrode is one. Only is placed. In rows 3, 5, and 7, only one reception electrode is disposed, respectively, in row 3, number 5 reception electrode, in row 5, number 9 reception electrode, and in row 7, only number 13 reception electrode is disposed. On the other hand, in the embodiment of FIG. 9, a case in which the receiving electrode disposed in the first column is configured to be disposed again in the last column is illustrated, but the last column may be omitted depending on the embodiment. In this case, a plurality of receiving electrodes connected to the same receiving terminal are not arranged in the same row.

In the embodiment of FIG. 9, a plurality of receiving electrodes connected to the same receiving terminal are arranged in a row spaced by one row from each other and a column spaced by three columns. For example, as shown in FIG. 10, the number 3 reception electrode connected to the number 3 reception terminal is arranged in 1 row, 3 row, 5 row, 7 row, and is arranged in a row spaced apart from each other by one row, and 3 columns. , Arranged in columns 7, 11, and 15 and arranged in columns spaced apart from each other by three columns.

In the embodiment of FIG. 9, a unit driving electrode column composed of four driving electrodes is repeatedly arranged in one column. For example, a column of unit drive electrodes made of drive electrodes 1, 2, 3 and 4 is repeatedly arranged on the right side of the receiving electrode arranged in one column. On the right side of the receiving electrode arranged in the second column, a unit driving electrode column consisting of driving electrodes 17, 18, 19, and 20 is repeatedly arranged. In the embodiment of FIG. 9, a plurality of driving electrodes connected to the same driving terminal are arranged in a column spaced at least five columns from each other. For example, the driving electrode columns composed of 1,2,3,4 driving electrodes are arranged in columns 1 and 11 and spaced apart by 9 columns, and the driving electrode columns consisting of driving electrodes 17, 18, 19, and 20 are 2 Arranged in columns 12 and 12, spaced apart by column 9, and drive electrode columns consisting of drive electrodes 9, 10, 11, and 12 are arranged in columns 3 and 9, and spaced by column 6. (The column number here is the drive electrode. Column number)

As described above, in the arrangement of FIG. 9, a plurality of receiving electrodes connected to the same receiving terminal are arranged in a row spaced by one row from each other and three columns separated from each other, and the plurality of driving electrodes connected to the same driving terminal are five to each other. Since it is arranged in a column spaced apart from each other, it is possible to improve a phenomenon in which a signal detected by the LGM disappears or a signal appears as being touched at two or more points.

On the other hand, in the above description, the case in which four driving electrodes are disposed adjacent to one side of one receiving electrode has been described. However, even when four receiving electrodes are disposed adjacent to one side of one driving electrode, the electrode arrangement as shown in FIG. 9 is arranged. Can be used. That is, in FIG. 9, the first electrode at the upper left may be used as a driving electrode, and the column of electrodes 1, 2, 3, and 4 on the right may be configured as a receiving electrode.

That is, in a touch sensor panel including a plurality of driving electrodes and a plurality of receiving electrodes formed on the same layer, a plurality of receiving electrodes are disposed adjacent to one side of one driving electrode, and a plurality of receiving electrodes are connected to the same receiving terminal. And a plurality of driving electrodes are connected to the same driving terminal. The plurality of driving electrodes connected to the same driving terminal are not arranged in the same column, and the number of driving electrodes connected to the same driving terminal and arranged in the same row is three or less. Preferably, the plurality of driving electrodes connected to the same driving terminal are arranged in a row spaced apart from each other by at least one row and three columns away from each other. A plurality of receiving electrodes connected to the same receiving terminal may be arranged in one or more spaced apart from each other. In one embodiment, a plurality of receiving electrodes connected to the same receiving terminal are arranged in a column spaced at least five columns from each other.

Meanwhile, in FIG. 9, the case in which the number of driving electrodes disposed in correspondence to one receiving electrode is four is described, but two, three or five driving electrodes may be disposed in one receiving electrode. In addition, in the drawing, the shape of the electrode is shown as a rectangle for convenience, but electrodes of various shapes such as a circle, an ellipse, a hexagon, and an octagon may be used.

The features, structures, and effects described in the above embodiments are included in one embodiment of the present invention, and are not necessarily limited to only one embodiment. Furthermore, features, structures, effects, and the like exemplified in each embodiment may be combined or modified for other embodiments by a person having ordinary knowledge in the field to which the embodiments belong. Therefore, the contents related to such combinations and modifications should be interpreted as being included in the scope of the present invention.

In addition, although the embodiments have been mainly described above, these are merely examples and do not limit the present invention, and those skilled in the art to which the present invention pertains are exemplified above without departing from the essential characteristics of this embodiment. It will be appreciated that various modifications and applications are possible. For example, each component specifically shown in the embodiments can be implemented by modification. And differences related to these modifications and applications should be construed as being included in the scope of the invention defined in the appended claims.

Claims (14)

1. It includes a plurality of driving electrodes and a plurality of receiving electrodes formed on the same layer,

   It includes at least one electrode group composed of the same receiving electrode,

   The same receiving electrode included in one of the electrode groups and connected to the same sensing terminal is disposed so that 4 or more do not appear.

   Touch sensor panel.
2. It includes a plurality of driving electrodes and a plurality of receiving electrodes formed on the same layer,

   It includes at least one electrode group composed of the same driving electrode,

   The same driving electrode included in one of the electrode groups and connected to the same driving terminal is disposed so that 4 or more do not appear.

   Touch sensor panel.
3. In the touch sensor panel,

   It includes a plurality of driving electrodes and a plurality of receiving electrodes formed on the same layer,

   A plurality of driving electrodes are disposed adjacent to one side of one receiving electrode,

   A plurality of receiving electrodes are connected to the same receiving terminal, and a plurality of driving electrodes are connected to the same driving terminal,

   A plurality of receiving electrodes connected to the same receiving terminal are not arranged in the same column with each other,

   The number of receiving electrodes connected to the same receiving terminal and arranged in the same row is three or less, a touch sensor panel.
4. According to claim 3,

   A plurality of receiving electrodes connected to the same receiving terminal are arranged in a row spaced at least one row from each other, the touch sensor panel.
5. According to claim 4,

   A plurality of receiving electrodes connected to the same receiving terminal are arranged in a column spaced by at least three columns from each other, the touch sensor panel.
6. The method of claim 5,

   A plurality of driving electrodes connected to the same driving terminal are disposed in one or more spaced apart from each other, a touch sensor panel.
7. The method of claim 6,

   A plurality of driving electrodes connected to the same driving terminal are arranged in a row spaced apart from each other by five or more rows, a touch sensor panel.
8. According to claim 3,

   A plurality of receiving electrodes connected to the same receiving terminal are not disposed in the same row with each other, the touch sensor panel.
9. In the touch sensor panel,

   It includes a plurality of driving electrodes and a plurality of receiving electrodes formed on the same layer,

   A plurality of receiving electrodes are disposed adjacent to one side of one driving electrode,

   A plurality of receiving electrodes are connected to the same receiving terminal, and a plurality of driving electrodes are connected to the same driving terminal,

   A plurality of driving electrodes connected to the same driving terminal are not arranged in the same column with each other,

   The number of driving electrodes connected to the same driving terminal and disposed in the same row is three or less, a touch sensor panel.
10. The method of claim 9,

    A plurality of driving electrodes connected to the same driving terminal are disposed in a row spaced by at least one row from each other, the touch sensor panel.
11. The method of claim 10,

    A plurality of driving electrodes connected to the same driving terminal are disposed in a column spaced by at least three columns from each other, the touch sensor panel.
12. The method of claim 11,

    A plurality of receiving electrodes connected to the same receiving terminal are arranged in one or more spaced apart from each other, a touch sensor panel.
13. The method of claim 12,

    A plurality of receiving electrodes connected to the same receiving terminal are arranged in a column spaced at least five rows from each other, a touch sensor panel.
14. The method of claim 13,

    A plurality of driving electrodes connected to the same driving terminal are not disposed in the same row with each other, the touch sensor panel.

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