Electronic device

Abstract

The invention provides an electronic device. The electronic device comprises a control circuit and a plurality of sensing units. The control circuit switches between a first touch sensing mode of the electronic device and a second touch sensing mode of the electronic device. The first amplitude of a first touch driving signal provided when the control circuit operates in the first touch sensing mode is smaller than the second amplitude of a second touch driving signal provided when the control circuit operates in the second touch sensing mode.

Description

Technical Field

[0001] The present disclosure relates to an electronic device, and more particularly to an electronic device with a touch sensing function. Background Art

[0002] The electronic device may have a touch sensing function. Generally speaking, the current electronic device will enter a dormant state. The electronic device can wake up the dormant electronic device according to the touch behavior to enter a normal state and perform subsequent touch operations.

[0003] It should be noted that current electronic devices continue to provide touch sensing signals at the same frequency in both sleep and normal states. Therefore, when entering the normal state, the touch action may miss the pulse of the touch sensing signal. The above situation will cause a delay in the touch operation (such as a delay of one cycle of the touch sensing signal). Summary of the invention

[0004] The present disclosure is directed to an electronic device capable of shortening the delay of touch operation.

[0005] According to an embodiment of the present disclosure, an electronic device includes a control circuit and a plurality of sensing units. The control circuit switches between a first touch sensing mode of the electronic device and a second touch sensing mode of the electronic device. The plurality of sensing units are electrically connected to the control circuit. A first amplitude of a first touch driving signal provided by the control circuit when operating in the first touch sensing mode is smaller than a second amplitude of a second touch driving signal provided when operating in the second touch sensing mode.

[0006] Based on the above, the first touch drive signal used by the control circuit to operate in the first touch sensing mode is different from the second touch drive signal used to operate in the second touch sensing mode. Once the second touch sensing mode is entered, the second touch drive signal is re-provided. Therefore, the touch behavior that occurs immediately after entering the second touch sensing mode will not miss the pulse of the second touch drive signal. In this way, the electronic device can shorten the delay of the touch operation. In addition, the first amplitude of the first touch drive signal is smaller than the second amplitude of the second touch drive signal. Therefore, the power consumption of the electronic device in the first touch sensing mode is lower than the power consumption of the electronic device in the second touch sensing mode. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 is a schematic diagram of an electronic device according to an embodiment of the present disclosure;

[0008] Figure 2A , Figure 2B as well as Figure 2C is a waveform diagram according to an embodiment of the present disclosure;

[0009] Figure 3A , Figure 3B as well as Figure 3C is a waveform diagram according to an embodiment of the present disclosure;

[0010] Figure 4 is a schematic diagram of a control circuit according to an embodiment of the present disclosure;

[0011] Figure 5 is a waveform diagram according to an embodiment of the present disclosure;

[0012] Figure 6 is an operation flow chart according to an embodiment of the present disclosure;

[0013] Figure 7 is an operation flow chart according to an embodiment of the present disclosure;

[0014] Figure 8 is a sensing schematic diagram of a control circuit according to an embodiment of the present disclosure.

[0015] Description of Reference Numerals

[0016] 100: Electronic devices

[0017] 110, 210, 310: Control circuit

[0018] 211: Dynamic Sensing Logic Circuit

[0019] 212: Group control circuit

[0020] 213: Touch control circuit

[0021] 214: Display control circuit

[0022] 311: Control unit

[0023] 312: Touch sensing circuit

[0024] 313: Touch drive circuit

[0025] 314: First timing signal generator

[0026] 315: Second timing signal generator

[0027] 316: Comparison Circuit

[0028] 317: Judgment Circuit

[0029] DSYNC: Display synchronization signal

[0030] GSU1: Group 1 Sensor Unit

[0031] GSU2_1 to GSU2_4: second sensing unit group

[0032] M1: First touch sensing mode

[0033] M2: Second touch sensing mode

[0034] P1, P2: Pulse

[0035] S1, S2: String wave

[0036] S100, S200: Operation process

[0037] S110~S140, S210~S270: Steps

[0038] SIDX: Index signal

[0039] SR: Signal

[0040] SS: Sensing signal

[0041] ST1: First timing signal

[0042] ST2: Second timing signal

[0043] STD1: First touch drive signal

[0044] STD2: Second touch drive signal

[0045] STS: Touch Sensing Results

[0046] SU: Sensing Unit

[0047] TSYNC: touch synchronization signal

[0048] VSYNC: vertical synchronization signal DETAILED DESCRIPTION

[0049] The present disclosure may be understood by reference to the following detailed description in conjunction with the accompanying drawings as described below. It should be noted that for the purpose of clarity and ease of understanding by the reader, the various drawings of the present disclosure illustrate a portion of an electronic device, and certain elements in the various drawings may not be drawn to scale. In addition, the number and size of each device shown in the drawings are merely illustrative and are not intended to limit the scope of the present disclosure.

[0050] Certain terms are used to refer to specific elements throughout the description and in the following scope of rights. As will be understood by those skilled in the art, electronic equipment manufacturers may refer to elements by different names. This document is not intended to distinguish between elements that are different in name but not in function. In the following description and in the scope of rights, the terms "comprise", "include" and "have" are used in an open manner, and therefore should be interpreted as meaning "including but not limited to..." Therefore, when the terms "comprise", "include" and / or "have" are used in the description of this disclosure, it will indicate that there are corresponding features, regions, steps, operations and / or elements, but not limited to the presence of one or more corresponding features, regions, steps, operations and / or elements.

[0051] It should be understood that when an element is referred to as being "coupled to", "connected to" or "conducted to" another element, the element may be directly connected to the other element and an electrical connection may be directly established, or an intermediate element may exist between these elements for relaying the electrical connection (indirect electrical connection). In contrast, when an element is referred to as being "directly coupled to", "directly conductive to" or "directly connected to" another element, there are no intermediate elements.

[0052] Although terms such as first, second, third, etc. can be used to describe different components, such components are not limited by these terms. The terms are only used to distinguish components in the specification from other components. The scope of rights protection may not use the same terms, but may use the terms first, second, third, etc. relative to the order required for the elements. Therefore, in the following description, the first component may be the second component in the scope of rights protection.

[0053] The electronic device disclosed herein may include a display device, an antenna device, a sensing device, a light-emitting device, a touch display, a curved display, or a free shape display, but is not limited thereto. The electronic device may include a bendable or flexible electronic device. The electronic device may, for example, include a liquid crystal, a light-emitting diode, a quantum dot (QD), fluorescence, phosphorescence, other suitable display media, or a combination of the above materials, but is not limited thereto. The light-emitting diode may, for example, include an organic light-emitting diode (OLED), a sub-millimeter light-emitting diode (miniLED), a micro-light-emitting diode (micro LED), or a quantum dot light-emitting diode (quantum dot LED, which may include QLED, QDLED), or other suitable materials, or a combination of the above materials, but is not limited thereto. The display device may, for example, include a spliced ​​display device, but is not limited thereto. The antenna device may, for example, be a liquid crystal antenna, but is not limited thereto. The antenna device may, for example, include an antenna splicing device, but is not limited thereto. It should be noted that the electronic device may be any arrangement or combination of the foregoing, but is not limited thereto. In addition, the appearance of the electronic device may be rectangular, circular, polygonal, a shape with curved edges, or other suitable shapes. The electronic device may have a peripheral system such as a drive system, a control system, a light source system, etc. to support a display device, an antenna device, or a splicing device, but the present disclosure is not limited thereto. The sensing device may include a camera or an infrared sensor (infrared sensor) or a fingerprint sensor, etc., and the present disclosure is not limited thereto. In some embodiments, the sensing device may also include a flash, an infrared (IR) light source, other sensors, electronic components, or a combination thereof, but is not limited thereto.

[0054] In the present disclosure, embodiments use "pixel" or "pixel unit" as a unit for describing a specific area including at least one functional circuit for at least one specific function. The area of ​​a "pixel" depends on the unit used to provide a specific function, and adjacent pixels may share the same part or wire, but may also include their own specific part therein. For example, adjacent pixels may share the same scan line or the same data line, but the pixel may also have its own transistor or capacitor.

[0055] It should be noted that the technical features in the different embodiments described below may be replaced, reorganized or mixed with each other to constitute another embodiment without departing from the spirit of the present disclosure.

[0056] Please refer to Figure 1 , Figure 1 is a schematic diagram of an electronic device according to an embodiment of the present disclosure. In this embodiment, the electronic device 100 can operate in one of a first touch sensing mode and a second touch sensing mode. For example, the first touch sensing mode can be a pre-sensing mode. The first touch sensing mode can be a normal-sensing mode.

[0057] The electronic device 100 includes a control circuit 110 and a plurality of sensing units SU. The control circuit 110 switches between a first touch sensing mode of the electronic device 100 and a second touch sensing mode of the electronic device 100. The plurality of sensing units SU are electrically connected to the control circuit 110. The first amplitude provided by the first touch driving signal STD1 when the control circuit 110 operates in the first touch sensing mode is smaller than the second amplitude of the second touch driving signal STD2 provided when the control circuit 110 operates in the second touch sensing mode.

[0058] It is worth mentioning here that the first touch drive signal STD1 used by the control circuit 110 to operate in the first touch sensing mode is different from the second touch drive signal STD2 used to operate in the second touch sensing mode. Once entering the first touch sensing mode, the first touch drive signal STD1 is re-provided. Once entering the second touch sensing mode, the second touch drive signal STD2 is re-provided. Therefore, the touch behavior that occurs immediately after entering the second touch sensing mode will not miss the pulse of the second touch drive signal STD2. In this way, the electronic device 100 can shorten the delay of the touch operation. In addition, the first amplitude of the first touch drive signal STD1 is smaller than the second amplitude of the second touch drive signal STD2. In this way, the power consumption of the electronic device 100 in the first touch sensing mode is lower than the power consumption of the electronic device in the second touch sensing mode.

[0059] In the present embodiment, in the first touch sensing mode, the control circuit 110 groups the plurality of sensing units SU into a first sensing unit group GSU1 and second sensing unit groups GSU2_1 to GSU2_4. In the present embodiment, the control circuit 110 may electrically connect the plurality of first sensing units among the plurality of sensing units SU to form the first sensing unit group GSU1 in the first touch sensing mode. The control circuit 110 may electrically connect the plurality of second sensing units among the plurality of sensing units SU to form the second sensing unit group GSU2_1 in the first touch sensing mode. The control circuit 110 may electrically connect the plurality of third sensing units among the plurality of sensing units SU to form the second sensing unit group GSU2_2 in the first touch sensing mode. The control circuit 110 may electrically connect the plurality of fourth sensing units among the plurality of sensing units SU to form the second sensing unit group GSU2_3 in the first touch sensing mode. The control circuit 110 may electrically connect the plurality of fifth sensing units among the plurality of sensing units SU to form the second sensing unit group GSU2_4 in the first touch sensing mode. Therefore, the first sensing unit group GSU1 and the second sensing unit groups GSU2_1 - GSU2_4 can be regarded as five large sensing units.

[0060] In this embodiment, the second sensing unit groups GSU2_1 to GSU2_4 are respectively adjacent to the first sensing unit group GSU1. For example, the second sensing unit groups GSU2_1 to GSU2_4 surround the first sensing unit group GSU1 (but the disclosure is not limited to this example).

[0061] In the present embodiment, the first sensing unit group GSU1 may be a TX electrode. The second sensing unit groups GSU2_1 to GSU2_4 may be RX electrodes, respectively. The control circuit 110 provides the first touch drive signal STD1 to the first sensing unit group GSU1 in the first touch sensing mode. It should be noted that the first touch sensing mode may be a mutual capacitance sensing mode. In the first touch sensing mode, the first sensing unit group GSU1 and the second sensing unit group GSU2_1 to GSU2_4 may perform proximity sensing operations. Once the first sensing unit group GSU1 and the second sensing unit group GSU2_1 to GSU2_4 sense a triggering behavior (e.g., a contactless proximity sensing behavior or a touch behavior), the control circuit 110 controls the electronic device 100 to enter the second touch sensing mode and restores the first sensing unit group GSU1 and the second sensing unit group GSU2_1 to GSU2_4 to the plurality of sensing units SU. For example, in the second touch sensing mode, the control circuit 110 disconnects the electrical connection between the plurality of first sensing units, disconnects the electrical connection between the plurality of second sensing units, disconnects the electrical connection between the plurality of third sensing units, disconnects the electrical connection between the plurality of fourth sensing units, and disconnects the electrical connection between the plurality of fifth sensing units.

[0062] In this embodiment, the second touch sensing mode may be a self-capacitance sensing mode.

[0063] This embodiment uses five sensing unit groups as an example, but the disclosure is not limited thereto. The sensing unit groups disclosed herein may be multiple. Each sensing unit group disclosed herein includes at least one sensing unit SU. The number of sensing units SU in the first sensing unit group GSU1 and the second sensing unit group GSU2_1 to GSU2_4 is limited in the disclosure.

[0064] Please refer to Figure 1 , Figure 2A , Figure 2B as well as Figure 2C , Figure 2A , Figure 2B as well as Figure 2C is a waveform diagram according to an embodiment of the present disclosure. In this embodiment, Figure 2A , Figure 2B as well as Figure 2C 1 and 2 show waveform diagrams of the electronic device 100 in the first touch sensing mode and the second touch sensing mode. Figure 2AA waveform diagram showing that the electronic device 100 has not sensed a trigger behavior in the first touch sensing mode. In the first touch sensing mode, the control circuit 110 provides the first touch drive signal STD1 to the first sensing unit group GSU1, and provides the signal SR to the second sensing unit group GSU2_1~GSU2_4. The first sensing unit group GSU1 and the second sensing unit group GSU2_1~GSU2_4 perform mutual capacitance sensing operations. When the electronic device 100 has not sensed a trigger behavior, the waveform of the signal SR does not change. Therefore, the control circuit 110 can determine that the electronic device 100 has not sensed a trigger behavior in the first touch sensing mode based on the waveform of the signal SR that has not changed.

[0065] Figure 2B The waveform diagram of the electronic device 100 sensing a triggering behavior in the first touch sensing mode is shown. In the first touch sensing mode, when the electronic device 100 senses a triggering behavior, the waveform of the signal SR is disturbed and changes. Therefore, the control circuit 110 can determine that the electronic device 100 senses a triggering behavior in the first touch sensing mode based on the changed waveform of the signal SR. Therefore, the electronic device 100 enters the second touch sensing mode.

[0066] Figure 2C : shows a waveform diagram of the electronic device 100 in the second touch sensing mode. In the second touch sensing mode, the control circuit 110 restores the first sensing unit group GSU1 and the second sensing unit group GSU2_1~GSU2_4 to the multiple sensing units SU. In addition, the control circuit 110 provides the second touch drive signal STD2 to the multiple sensing units SU. In other words, the multiple sensing units SU receive the same second touch drive signal STD2, and perform self-capacitance sensing operations based on the second touch drive signal STD2. The waveform of the second touch drive signal STD2 is different from the waveform of the first touch drive signal STD1 (such as Figure 2A , Figure 2B ).

[0067] In this embodiment, the first touch driving signal STD1 and the second touch driving signal STD2 each include a plurality of pulses. In some embodiments, the first touch driving signal STD1 and the second touch driving signal STD2 each include a plurality of sine waves and / or a plurality of pulses. The present disclosure is not limited to the waveforms of the first touch driving signal STD1 and the second touch driving signal STD2.

[0068] Please refer to Figure 3A , Figure 3AIt is a waveform diagram of the first touch driving signal and the second touch driving signal shown in an embodiment of the present disclosure. In this embodiment, in the first touch sensing mode M1, the first touch driving signal STD1 includes a pulse P1. In the second touch sensing mode M2, the second touch driving signal STD2 includes a pulse P2. The amplitude (height) of the pulse P1 is smaller than the amplitude of the pulse P2. Therefore, the power consumption of the electronic device 100 in the first touch sensing mode is lower than the power consumption of the electronic device in the second touch sensing mode. In this embodiment, the width of the pulse P1 is smaller than the width of the pulse P2. In some embodiments, the width of the pulse P1 is greater than or equal to the width of the pulse P2.

[0069] In addition, when entering the second touch sensing mode M2, the second touch driving signal STD2 begins to be provided. Therefore, the touch behavior that occurs immediately after entering the second touch sensing mode M2 ​​will not miss the pulse P2 of the second touch driving signal STD2. The electronic device 100 generates a touch sensing result STS corresponding to the first pulse P2 of the second touch driving signal STD2. Once the second touch sensing mode M2 ​​ends, the electronic device 100 enters the second touch sensing mode M2.

[0070] Please refer to Figure 3B , Figure 3B 1 is a waveform diagram of a first touch driving signal and a second touch driving signal according to an embodiment of the present disclosure. In this embodiment, in the first touch sensing mode M1, the first touch driving signal STD1 includes a pulse wave P1. In the second touch sensing mode M2, the second touch driving signal STD2 includes a sine wave S2. The amplitude of the pulse wave P1 is smaller than the amplitude of the sine wave S2. Therefore, the power consumption of the electronic device 100 in the first touch sensing mode is lower than the power consumption of the electronic device in the second touch sensing mode.

[0071] In some embodiments, the first touch driving signal STD1 includes a sine wave, and the second touch driving signal STD2 includes a pulse wave.

[0072] In other words, one of the first touch driving signal STD1 and the second touch driving signal STD2 is a digital signal, and the other of the first touch driving signal STD1 and the second touch driving signal STD2 is an analog signal.

[0073] In addition, when entering the second touch sensing mode M2, the second touch driving signal STD2 begins to be provided. Therefore, the touch behavior that occurs immediately after entering the second touch sensing mode M2 ​​will not miss the sine wave S2 of the second touch driving signal STD2. Once the second touch sensing mode M2 ​​ends, the electronic device 100 enters the second touch sensing mode M2.

[0074] Please refer to Figure 3C , Figure 3C It is a waveform diagram of the first touch driving signal and the second touch driving signal shown in an embodiment of the present disclosure. In this embodiment, in the first touch sensing mode M1, the first touch driving signal STD1 includes a sine wave S1. In the second touch sensing mode M2, the second touch driving signal STD2 includes a sine wave S2. The amplitude of the sine wave S1 is smaller than the amplitude of the sine wave S2. Therefore, the power consumption of the electronic device 100 in the first touch sensing mode is lower than the power consumption of the electronic device in the second touch sensing mode. In this embodiment, the frequency of the sine wave S1 is equal to the frequency of the sine wave S2.

[0075] In addition, when entering the second touch sensing mode M2, the second touch driving signal STD2 begins to be provided. Therefore, the touch behavior that occurs immediately after entering the second touch sensing mode M2 ​​will not miss the sine wave S2 of the second touch driving signal STD2. Once the second touch sensing mode M2 ​​ends, the electronic device 100 enters the second touch sensing mode M2.

[0076] In this embodiment, the first touch driving signal STD1 and the second touch driving signal STD2 are analog signals respectively.

[0077] In some embodiments, the frequency of the sine wave S1 is higher than the frequency of the sine wave S2. Therefore, in the first touch sensing mode M1, the electronic device 100 will not be disturbed by low-frequency noise and will not cause errors when performing a non-contact proximity sensing operation.

[0078] In some embodiments, the frequency of the sine wave S1 is lower than the frequency of the sine wave S2.

[0079] In some embodiments, the amplitude of the sine wave S1 may be greater than the amplitude of the sine wave S2 .

[0080] Please refer to Figure 1 , Figure 4 as well as Figure 5 , Figure 4 is a schematic diagram of a control circuit according to an embodiment of the present disclosure. Figure 5 It is a waveform diagram according to an embodiment of the present disclosure. In this embodiment, the control circuit 210 is applicable to the electronic circuit 100. The control circuit 210 includes a dynamic sensing logic circuit 211, a group control circuit 212 and a touch control circuit 213. The dynamic sensing logic circuit 211 receives a vertical synchronization signal VSYNC, and provides a touch synchronization signal TSYNC according to the vertical synchronization signal VSYNC. The touch control circuit 213 is electrically connected to the dynamic sensing logic circuit 211 and the plurality of sensing units SU. The touch control circuit 213 determines to provide one of the first touch driving signal STD1 and the second touch driving signal STD2 according to the touch synchronization signal TSYNC.

[0081] In this embodiment, the dynamic sensing logic circuit 211 further provides an index signal SIDX according to the first touch sensing mode M1 and the second touch sensing mode M2. In this embodiment, the group control circuit 212 groups the plurality of sensing units SU into a first sensing unit group GSU1 and a second sensing unit group GSU2_1 to GSU2_4 or restores the first sensing unit group GSU1 and the second sensing unit group GSU2_1 to GSU2_4 to the plurality of sensing units SU according to the index signal SIDX.

[0082] For example, when entering the second touch sensing mode M2 ​​from the first touch sensing mode M1, the dynamic sensing logic circuit 211 provides an index signal SIDX having a first waveform. When the group control circuit 212 receives the index signal SIDX having the first waveform, the group control circuit 212 restores the first sensing unit group GSU1 and the second sensing unit group GSU2_1 to GSU2_4 to the plurality of sensing units SU. At this time, the touch control circuit 213 provides the second touch driving signal STD2 to the plurality of sensing units SU according to the touch synchronization signal TSYNC.

[0083] When entering the first touch sensing mode M1 from the second touch sensing mode M2, the dynamic sensing logic circuit 211 provides an index signal SIDX having a second waveform. When the group control circuit 212 receives the index signal SIDX having the second waveform, the group control circuit 212 groups the plurality of sensing units SU into a first sensing unit group GSU1 and second sensing unit groups GSU2_1 to GSU2_4. At this time, the touch control circuit 213 provides a first touch driving signal STD1 to the first sensing unit group GSU1 according to the touch synchronization signal TSYNC.

[0084] In this embodiment, the electronic circuit 100 may be, for example, a touch display device. Therefore, the control circuit 210 further includes a display control circuit 214. The display control circuit 214 is electrically connected to a display panel (not shown) of the electronic circuit 100 and a dynamic sensing logic circuit 211. The dynamic sensing logic circuit 211 provides a display synchronization signal DSYNC according to a vertical synchronization signal VSYNC. The display control circuit 214 controls the display panel according to the display synchronization signal DSYNC.

[0085] In this embodiment, the control circuit 210 may be, for example, a touch and display driver integration (TDDI).

[0086] In some embodiments, the control circuit 210 does not include the display control circuit 214 .

[0087] Please refer to Figure 1 as well as Figure 6 , Figure 6 It is an operation flow chart according to an embodiment of the present disclosure. In this embodiment, the operation process S100 is applicable to the electronic circuit 100. The operation process S100 includes steps S110 to S140. In step S110, the electronic circuit 100 enters a first touch sensing mode to sense a triggering behavior. In step S110, the control circuit 110 groups the plurality of sensing units SU into a first sensing unit group GSU1 and a second sensing unit group GSU2_1 to GSU2_4, and provides a first touch driving signal STD1 to the first sensing unit group GSU1. The triggering behavior is, for example, a non-contact proximity sensing behavior or a touch behavior.

[0088] In step S120 , the electronic circuit 100 determines whether the triggering behavior occurs. When the triggering behavior does not occur, the electronic circuit 100 returns to the operation of step S110 .

[0089] On the other hand, when the triggering behavior occurs, the control circuit 110 controls the electronic circuit 100 to enter the second touch sensing mode in step S130. The control circuit 110 restores the first sensing unit group GSU1 and the second sensing unit group GSU2_1 to GSU2_4 to the plurality of sensing units SU in the second touch sensing mode, and provides the second touch driving signal STD2 to the plurality of sensing units SU. The electronic circuit 100 provides a touch sensing result according to the touch operation of the second touch sensing mode in step S140.

[0090] Please refer to Figure 1 as well as Figure 7 , Figure 7This is an operation flow chart according to an embodiment of the present disclosure. In this embodiment, the operation process S200 is applicable to the electronic circuit 100. The operation process S200 includes steps S210 to S270. The electronic circuit 100 is, for example, a vehicle electronic device. In step S210, the vehicle host is powered on. The electronic circuit 100 is activated in step S220 to enter the initialization setting, and determines in step S230 whether it is operated to enter the first touch sensing mode. In step S230, the electronic circuit 100 may provide a prompt on whether to enter the first touch sensing mode. For example, the electronic circuit 100 may display a prompt on whether to enter the first touch sensing mode through a display panel. The user may decide whether to control the electronic circuit 100 to enter the first touch sensing mode based on the prompt. When the electronic circuit 100 is not operated to enter the first touch sensing mode, the electronic circuit 100 enters the second touch sensing mode in step S240 , and provides a touch sensing result according to the touch operation of the second touch sensing mode in step S250 .

[0091] On the other hand, when the electronic circuit 100 is operated to enter the first touch sensing mode, the electronic circuit 100 enters the first touch sensing mode in step S260, and senses the triggering behavior and provides an operation corresponding to the triggering behavior in step S270. The implementation details of step S270 have been described in detail. Figures 1 to 5 as well as Figure 6 The steps S110 to S140 are clearly described in the embodiment and will not be repeated here.

[0092] Please refer to Figure 1 as well as Figure 8 , Figure 8 3 is a sensing schematic diagram of a control circuit according to an embodiment of the present disclosure. In this embodiment, the control circuit 310 is applicable to the electronic circuit 100. The control circuit 310 includes a control unit 311, a touch sensing circuit 312, a touch driving circuit 313, a first timing signal generator 314, a second timing signal generator 315, a comparison circuit 316 and a judgment circuit 317. The control unit 311 is electrically connected to the comparison circuit 316 and the judgment circuit 317. The touch sensing circuit 312 is electrically connected to the plurality of sensing units SU and the comparison circuit 316. The touch driving circuit 313 is electrically connected to the plurality of sensing units SU, the first timing signal generator 314 and the second timing signal generator 315. The comparison circuit 316 is electrically connected to the judgment circuit 317. The judgment circuit 317 is electrically connected to the first timing signal generator 314 and the second timing signal generator 315.

[0093] In this embodiment, the control unit 311 drives the comparison circuit 316 and the judgment circuit 317. When the electronic circuit 100 enters the first touch sensing mode, the judgment circuit 317 enables the first timing signal generator 314 and disables the second timing signal generator 315. The first timing signal generator 314 provides a first timing signal ST1. The touch driving circuit 313 provides a first touch driving signal STD1 in response to the first timing signal ST1. In the first touch sensing mode, the comparison circuit 316 receives a result corresponding to a triggering behavior (e.g., a non-contact proximity sensing behavior or a touch behavior) through the touch sensing circuit 312. The comparison circuit 316 generates a sensing signal SS based on the comparison of the result and the reference signal. The judgment circuit 317 determines whether to enable one of the first timing signal generator 314 and the second timing signal generator 315 based on the sensing signal SS.

[0094] For example, the determination circuit 317 determines whether the voltage value of the sensing signal SS is greater than a threshold value. When the voltage value of the sensing signal SS is less than the threshold value, the determination circuit 317 determines that the electronic circuit 100 has not triggered. Therefore, the determination circuit 317 enables the first timing signal generator 314 and disables the second timing signal generator 315. The touch driving circuit 313 continues to provide the first touch driving signal STD1.

[0095] On the other hand, when the voltage value of the sensing signal SS is less than the threshold value, the determination circuit 317 determines that the electronic circuit 100 is triggered. The electronic circuit 100 enters the second touch sensing mode. Therefore, the determination circuit 317 enables the second timing signal generator 315 and disables the first timing signal generator 314. The second timing signal generator 315 provides the second timing signal ST2. The touch driving circuit 313 responds to the second timing signal ST2 and provides the second touch driving signal STD2.

[0096] In addition, the control unit 311 is electrically connected to the first timing signal generator 314 and the second timing signal generator 315. The control unit 311 can adjust or set the first timing signal ST1 of the first timing signal generator 314 and the second timing signal ST2 of the second timing signal generator 315.

[0097] In summary, the first touch drive signal used by the control circuit of the electronic circuit to operate in the first touch sensing mode is different from the second touch drive signal used to operate in the second touch sensing mode. Once the second touch sensing mode is entered, the second touch drive signal is re-provided. Therefore, the touch behavior that occurs immediately after entering the second touch sensing mode will not miss the pulse of the second touch drive signal. In this way, the electronic device can shorten the delay of the touch operation. In addition, the first amplitude of the first touch drive signal is smaller than the second amplitude of the second touch drive signal. Therefore, the power consumption of the electronic device in the first touch sensing mode is lower than the power consumption of the electronic device in the second touch sensing mode.

[0098] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. An electronic device, characterized in that: The electronic device comprises: a control circuit configured to switch between a first touch sensing mode of the electronic device and a second touch sensing mode of the electronic device; and A plurality of sensing units are electrically connected to the control circuit. The first amplitude of the first touch driving signal provided by the control circuit when operating in the first touch sensing mode is smaller than the second amplitude of the second touch driving signal provided by the control circuit when operating in the second touch sensing mode.

2. The electronic device according to claim 1, characterized in that: The control circuit groups the plurality of sensing units into a first sensing unit group and a plurality of second sensing unit groups in the first touch sensing mode.

3. The electronic device according to claim 2, characterized in that: The plurality of second sensing unit groups are respectively adjacent to the first sensing unit groups.

4. The electronic device according to claim 2, characterized in that: The control circuit provides the first touch driving signal to the first sensing unit group in the first touch sensing mode.

5. The electronic device according to claim 2, characterized in that: In the first touch sensing mode, when a triggering behavior is sensed, the control circuit controls the electronic device to enter the second touch sensing mode, and restores the first sensing unit group and the plurality of second sensing unit groups to the plurality of sensing units.

6. The electronic device according to claim 1, characterized in that: The first touch sensing mode is a mutual capacitance sensing mode.

7. The electronic device according to claim 1, characterized in that: The second touch sensing mode is a self-capacitive sensing mode.

8. The electronic device according to claim 1, characterized in that: The frequency of the first touch driving signal is higher than the frequency of the second touch driving signal.

9. The electronic device according to claim 1, characterized in that: The first touch driving signal and the second touch driving signal are respectively analog signals.

10. The electronic device according to claim 1, characterized in that: One of the first touch driving signal and the second touch driving signal is a digital signal, and the other of the first touch driving signal and the second touch driving signal is an analog signal.

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