Sensing device

Abstract

The present invention provides a sensing device and a sensing method for a sensing device, and the sensing device has a suspension mode. The sensing device includes a substrate; and a plurality of sensing electrodes disposed on the substrate. In the suspension mode, the plurality of sensing electrodes are defined as a plurality of suspension units, wherein the plurality of suspension units include a first suspension unit, and the sensing electrodes having signals in the first suspension unit form a first identification pattern.

Description

Technical Field

[0001] The present disclosure relates to a sensing device, and more particularly to a sensing device with a suspension mode. Background Art

[0002] Touch display devices are divided into "external" and "embedded", and embedded types are further divided into "in-cell" and "on-cell". In in-cell touch display devices, mutual capacitance sensing mechanism or self capacitance sensing mechanism may be used, in which the display mode and touch mode can be driven in time division. When hovering the glass cover or touching the plastic cover or wearing thick gloves, the user operates through air, plastic or gloves with a small dielectric constant, so the sensing signal is weak, resulting in a poor signal-to-noise ratio, making it difficult to effectively make touch judgments.

[0003] In view of this, there is still a need to develop a sensing device to improve the above problems. Summary of the invention

[0004] The present disclosure provides a sensing device having a suspension mode. The sensing device includes a substrate; and a plurality of sensing electrodes disposed on the substrate. In the suspension mode, the plurality of sensing electrodes are defined as a plurality of suspension units, wherein the plurality of suspension units include a first suspension unit, and the sensing electrodes having signals in the first suspension unit constitute a first recognition pattern.

[0005] The present disclosure provides a sensing method of a sensing device, wherein the sensing device includes a substrate; and a plurality of sensing electrodes disposed on the substrate, in a suspension mode, the plurality of sensing electrodes are defined as a plurality of suspension units, wherein the plurality of suspension units include a first suspension unit. The sensing method includes providing signals to a portion of the sensing electrodes in a suspension mode to form a first recognition pattern; and recognizing the first recognition pattern. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 FIG. 1 is a schematic diagram of a sensing device according to an embodiment of the present disclosure.

[0007] Figure 2 for Figure 1 A partial enlarged schematic diagram of the sensing device shown.

[0008] Figure 3 FIG. 1 is a schematic diagram of a sensing device according to an embodiment of the present disclosure.

[0009] Figure 4Schematic diagram of a sensing method in an embodiment of the present disclosure.

[0010] Figure 5 Schematic diagram of a sensing method in an embodiment of the present disclosure.

[0011] Description of reference numerals: 10, 20 - sensing device; 40, 50 - sensing method; 100 - substrate; H 11 ~H mn - suspension unit; 200 - touch display panel; 202 - touch display driver integrated chip; 204 - driving unit; 206 - multiplexer; 208 - sensing unit; 210 - processing unit; 212 - memory; PN1, PN2, PN3 - identification pattern; RX, RX11a~RX11p, RX12a~RX12p - sensing electrode; S400~S406, S500~S512 - steps. Detailed implementation manners

[0012] The present disclosure has been specifically shown and described with reference to embodiments and their specific features. The embodiments set forth below should be considered illustrative rather than restrictive. It will be apparent to those of ordinary skill in the art that various changes and modifications in form and detail can be made without departing from the spirit and scope of the present disclosure.

[0013] Before further describing the embodiments, the following first explains the specific terms used throughout the text.

[0014] The meanings of the terms "on", "above", and "over" should be construed in the broadest manner such that "on", "above", and "over" not only mean "directly on" something but also include the meaning of being on something with other intervening features or layers therebetween, and "directly on", "directly above", and "directly over" not only mean the meaning of being "above" something, but also can include the meaning of being "above" something with no other intervening features or layers therebetween.

[0015] In addition, terms such as "bottom", "below", "above", "top", etc. are used to describe the relative positions of different components in the drawings. However, when the drawing is flipped so that it is upside down, the aforementioned "above" becomes "below". It should be understood that, in addition to the directions shown in the drawings, the spatial relative terms are intended to cover different directions of the device in use or operation.

[0016] In the following, the terms "form" or "set" are used to describe the act of applying a material layer to a substrate. These terms are intended to describe any feasible layer formation technique, including but not limited to thermal growth, sputtering, evaporation, chemical vapor deposition, epitaxial growth, electroplating, etc.

[0017] The ordinal numbers used in the description and claims, such as "first", "second", etc., are used to modify the elements of the claims. They do not themselves imply or represent that the claimed element has any previous ordinal number, nor do they represent the order of one claimed element and another claimed element, or the order in the manufacturing method. The use of these ordinal numbers is only to clearly distinguish one claimed element with a certain name from another claimed element with the same name.

[0018] It should be understood that although the terms first, second, etc. may be used herein to describe various elements, components, regions, layers, or / and parts, these elements, components, regions, layers, or / and parts should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer, or / and part from another element, component, region, layer, or / and part. Therefore, without departing from the teachings of this disclosure, the first element, first component, first region, first layer, or first part discussed below may also be referred to as the second element, second component, second region, second layer, or second part.

[0019] In addition, phrases such as "in the range between the first value and the second value" or "within the range between the first value and the second value" mean that the range includes the first value, the second value, and other values therebetween.

[0020] It should be understood that multiple embodiments are listed below to illustrate different technical features respectively, but these technical features can be used in combination or combined with each other in different ways without conflicting with each other.

[0021] Certain terms are used in the description and claims to refer to specific elements. However, those of ordinary skill in the art to which this disclosure pertains should understand that a manufacturer may use different names to refer to the same element, and moreover, the description and claims do not use the difference in names as a way to distinguish elements, but use the difference in the overall technology of the elements as the criterion for distinction.

[0022] The term "comprising" mentioned throughout the description and claims is an open-ended term and should be interpreted as "comprising but not limited to". When the terms "comprising" and / or "having" are used in this description, they specify the presence of the described features, regions, steps, operations, and / or elements, but do not exclude the presence or addition of one or more other features, regions, steps, operations, elements, and / or their combinations.

[0023] Furthermore, the term "coupled" herein includes any direct and indirect connection means. Therefore, if a first device is described as being coupled to a second device in the text, it means that the first device can be directly connected to the second device, or can be indirectly connected to the second device through other devices or other connection means.

[0024] To enable those skilled in the art to further understand this disclosure, the following specifically enumerate the embodiments of this disclosure and elaborate on the composition and intended effects of this disclosure in conjunction with the accompanying drawings. It should be noted that the accompanying drawings are all simplified schematic diagrams. Therefore, only the elements and combination relationships related to this disclosure are shown, and some elements are omitted to provide a clearer description of the basic structure or implementation method of this disclosure. The actual elements and layouts may be more complex.

[0025] In addition, for the convenience of description, the components shown in the accompanying drawings of this disclosure are not drawn in an equal proportion according to the actual number, shape, and size of the implementation. The detailed ratio can be adjusted according to the design requirements.

[0026] The electronic device disclosed herein may, for example, include a display device, an antenna device, a sensing device, a touch display, a curved display, or a free shape display, and may also be a foldable or flexible splicing electronic device, but is not limited thereto. The electronic device may, for example, include thin film transistors (TFTs) having semiconductor materials, top gate transistors, bottom gate transistors, double gate transistors, or dual gate thin film transistors having semiconductor materials such as amorphous silicon, low temperature poly-silicon (LTPS), or metal oxide, or a combination of the above materials, but is not limited thereto. In some embodiments, different thin film transistors may have the above different semiconductor materials. The electronic device may, for example, include light emitting diodes, liquid crystals, fluorescence, phosphors, quantum dots (QD), other suitable display media, or a combination of the foregoing, but is not limited thereto. The light emitting diode (LED) may, for example, include an organic light emitting diode (OLED), an inorganic light emitting diode, a mini LED, a micro LED, or a quantum dot light emitting diode (e.g., QLED, QDLED), or other suitable materials or any permutation and combination of the above, but is not limited thereto. The electronic device may, for example, be a liquid crystal antenna, but is not limited thereto. In some embodiments of the present disclosure, the size of the micro LED can be minimized to the micrometer-level, so that the light emitting diode may have a cross-sectional area of 300 micrometers (μm) × 300 μm, 30 μm × 30 μm, or 10 μm × 10 μm, but is not limited thereto. The electronic device disclosed herein may be any permutation and combination of the foregoing, but is not limited thereto. The shape of the electronic device may be rectangular, circular, polygonal, a shape with curved edges, or other suitable shapes. The electronic device may have peripheral systems such as a driving system, a control system, a light source system, a shelf system, etc. to support the display device or the antenna device. The electronic device disclosed herein may be applied to electronic products capable of displaying images such as laptops, smartphones, etc., but is not limited thereto.The following will take the sensing device as an example.

[0027] Please refer to Figure 1 and Figure 2 , Figure 1 which is a schematic diagram of a sensing device 10 in an embodiment of the present disclosure. Figure 2 is Figure 1 a partial enlarged schematic diagram of the sensing device 10 shown. The sensing device 10 can be an electronic device. As Figure 1 shown, the sensing device 10 includes a substrate 100 and a plurality of sensing electrodes RX disposed on the substrate 100. The sensing device 10 can have a floating mode. In the floating mode, the sensing electrodes RX can be defined as (or grouped into) a plurality of floating units. The plurality of floating units can include: a first floating unit H 11 , a second floating unit H 12 ,..., a floating unit H mn , where m and n are positive integers. The plurality of floating units RX can be arranged in an array, but not limited thereto. Please refer to Figure 1 and Figure 2 , the first floating unit H 11 can include sensing electrodes with signals, constituting a first identification pattern PN1. Specifically, Figure 2 in, the first floating unit H 11 in, the part enclosed by the dotted line and marked with dots is the sensing electrode of the first part HP1. In the floating mode, the sensing electrodes of the first part HP1 have signals, and constitute a plurality of first identification sensing electrodes, and the first identification sensing electrodes have a first identification pattern PN1. As Figure 1 and Figure 2 shown, the number of sensing electrodes of the first part HP1 is taken as 8 as an example, but the number is not limited thereto. According to an embodiment, the number of sensing electrodes of the first part HP1 can be designed according to the actual situation and the requirements of the sensing device 10.

[0028] As Figure 2 shown, specifically, the first floating unit H 11 can include 16 sensing electrodes RX, that is, sensing electrode RX11a to sensing electrode RX11p, but the present disclosure is not limited thereto. In other embodiments, each floating unit can have other numbers of sensing electrodes, and moreover, each floating unit can also have different numbers of sensing electrodes. Among the 16 sensing electrodes RX in the first floating unit H 11 , in the floating mode, the sensing electrodes RX11a, RX11b, RX11c, RX11e, RX11i, RX11m, RX11n, RX11o of the first part HP1 have signals. According to an embodiment, the first floating unit H 11The number of sensing electrodes.

[0029] As Figure 2 shown, specifically, the second suspension unit H 12 may include 16 sensing electrodes RX, that is, sensing electrode RX12a to sensing electrode RX12p. However, the present disclosure is not limited thereto. In other embodiments, each suspension unit may have other numbers of sensing electrodes, and each suspension unit may also have different numbers of sensing electrodes. Please refer to Figure 1 and Figure 2 , the second suspension unit H 12 may include sensing electrodes having signals, forming a second identification pattern PN2. Specifically, among the 16 sensing electrodes RX in the second suspension unit H 12 , the part enclosed by the dotted line and marked with dots is the sensing electrode of the second part HP2. In the suspension mode, in the suspension mode, the sensing electrodes RX12b, RX12c, RX12d, RX12h, RX121, RX12n, RX12o, and RX12p of the second part HP2 have signals, and form a plurality of second identification sensing electrodes, and the second identification sensing electrodes have a second identification pattern PN2.

[0030] The sensing device 10 may have a display mode, a touch mode, and / or a hover mode. The display mode of the sensing device 10 is used to display a screen. When the sensing device 10 operates in the display mode, the sensing electrodes RX in the suspension unit H 11 ~ suspension unit H mn can be used as a common electrode to provide a reference voltage level. In the touch mode, a finger object (such as a finger or a stylus) directly touches the sensing device 10. In the hover mode, the finger object does not directly touch the sensing device 10.

[0031] The touch mode and the hover mode of the sensing device 10 are used to detect an object. When the sensing device 10 operates in the touch mode, the sensing electrodes RX in the suspension unit H 11 ~ suspension unit H mn can have signals. That is to say, after a sensing electrode RX receives a touch driving signal, it can output a touch sensing signal. Since the touch sensing signal when touched by an object is different from the touch sensing signal when not touched by an object, it can be determined that the sensing electrode RX is touched by an object.

[0032] When the sensing device 10 operates in the floating mode, only some of the sensing electrodes RX can have signals. That is to say, only some of the sensing electrodes RX receive the floating driving signal and output sensing signals after that. Moreover, the sensing signals when touched by an object will be different from those when not touched by an object. Another part of the sensing electrodes RX do not receive the floating driving signal and do not output sensing signals.

[0033] Specifically, the sensing electrodes RX in the floating units H 11 ~H mn can be classified into Figure 1 the sensing electrodes RX marked with dots (which can also be respectively called identification sensing electrodes) in Figure 1 and the sensing electrodes RX marked with a white background (which can also be respectively called non-identification sensing electrodes) in. In some embodiments, in a floating unit, only the identification sensing electrodes will receive the floating driving signal at a driving time and output sensing signals at a detection time, while the non-identification sensing electrodes will not receive the floating driving signal at a driving time and will not output sensing signals at a detection time.

[0034] For example, the floating unit H 11 (which can also be called the first floating unit) may include the sensing electrodes RX of a first part HP1 (marked with dots) and the sensing electrodes RX of a fourth part HP4 (marked with a white background). In the floating mode, the sensing electrodes RX11a, RX11b, RX11c, RX11e, RX11i, RX11m, RX11n, and RX11o of the first part HP1 of the floating unit H 11 have signals, and constitute a plurality of identification sensing electrodes (which can also be respectively called the first identification sensing electrodes), and the plurality of first identification sensing electrodes have an identification pattern PN1 (which can also be called the first identification pattern). In the floating mode, the sensing electrodes RX11d, RX11f, RX11g, RX11h, RX11j, RX11k, RX111, and RX11p (which can also be respectively called the first non-identification sensing electrodes) of the fourth part HP4 of the floating unit H 11 do not have signals.

[0035] According to some embodiments, in the touch mode, the sensing electrodes RX11d, RX11f, RX11g, RX11h, RX11j, RX11k, RX11l, and RX11p of the fourth part HP4 may have signals. However, in the floating mode, the sensing electrodes RX11d, RX11f, RX11g, RX11h, RX11j, RX11k, RX11l, and RX11p of the fourth part HP4 may not have signals.

[0036] As described above, in some embodiments, the floating unit H 11 includes 16 sensing electrodes RX, which can be divided into 8 identification sensing electrodes (i.e., sensing electrodes RX11a, RX11b, RX11c, RX11e, RX11i, RX11m, RX11n, and RX11o) and 8 non-identification sensing electrodes (i.e., sensing electrodes RX11d, RX11f, RX11g, RX11h, RX11j, RX11k, RX11l, and RX11p), but the present disclosure is not limited thereto. In other embodiments, the floating unit H 11 may include other numbers of sensing electrodes RX, and may also include other numbers of identification sensing electrodes and non-identification sensing electrodes. For example, in other embodiments, the floating unit H 11 may include 16 sensing electrodes R, divided into 6 identification sensing electrodes and 10 non-identification sensing electrodes. And, in some embodiments, the floating unit H 11 the number of identification sensing electrodes and the number of non-identification sensing electrodes may also be different from the number of identification sensing electrodes and the number of non-identification sensing electrodes of another floating unit.

[0037] In one embodiment, adjacent floating units may have different identification patterns. For example, the floating unit H 12 (which may also be referred to as the second floating unit) may include the sensing electrodes RX of a second part HP2 (marked with dots) and the sensing electrodes RX of a fifth part HP5 (marked with white dots). In the floating mode, the floating unit H 12The sensing electrodes RX12b, RX12c, RX12d, RX12h, RX121, RX12n, RX12o, and RX12p of the second part have signals and constitute a plurality of identification sensing electrodes (which may also be referred to as second identification sensing electrodes respectively). The plurality of second identification sensing electrodes have an identification pattern PN2 (which may also be referred to as a second identification pattern). In the floating mode, the floating unit H 12 The sensing electrodes RX12a, RX12e, RX12f, RX12g, RX12i, RX12j, RX12k, and RX12m (which may also be referred to as fifth non-identification sensing electrodes respectively) of the fifth part HP5 of 12 do not have signals. According to some embodiments, in the touch mode, the floating unit H 11 and the floating unit H 12 can be arranged adjacently. The identification pattern PN1 of the floating unit H 11 and the identification pattern PN2 of the floating unit H 12 can be different. The meaning of two floating units being arranged adjacently means that there are no other floating units arranged between these two floating units. For example, as Figure 2 shown, the identification pattern PN1 can be C-shaped, and the identification pattern PN2 can be inverted C-shaped. That is to say, the identification pattern PN1 and the identification pattern PN2 can be left-right reversed. Here, the identification pattern is only an example, and the identification pattern is not limited thereto.

[0038] In one embodiment, two non-adjacent floating units can have the same identification pattern. For example, as Figure 1 shown, the floating unit H mn (which may also be referred to as the third floating unit) can include the sensing electrodes RX of a third part HP3 (marked with dots) and the sensing electrodes RX of a sixth part HP6 (marked with a white background). In the floating mode, the sensing electrodes RX of the third part HP3 of the floating unit H mn have signals and constitute a plurality of identification sensing electrodes (which may also be referred to as third identification sensing electrodes respectively). The plurality of third identification sensing electrodes have an identification pattern PN3 (which may also be referred to as a third identification pattern). In the floating mode, the sensing electrodes RX of the sixth part HP6 of the floating unit H mn (which may also be referred to as sixth non-identification sensing electrodes) do not have signals. According to some embodiments, in the touch mode, the floating unit H mnThe sensing electrode RX of the sixth part HP6 may have a signal. In one embodiment, the suspension unit H 11 and the suspension unit H mn may be non-adjacent. The identification pattern PN1 of the suspension unit H 11 and the identification pattern PN3 of the suspension unit H mn may be the same. For example, the identification pattern PN1 may be C-shaped, and the identification pattern PN3 may also be C-shaped.

[0039] The following describes how the present disclosure can improve the signal quality. Since non-contact touches (such as touching the sensing device 10 through air, plastic, or gloves with a small dielectric constant) may make the touch sensing signal in the touch mode weak, resulting in a poor signal-to-noise ratio and making it difficult to effectively perform touch judgment, the sensing device 10 can be switched from the touch mode to the suspension mode. That is to say, the sensing device 10 is conducive to identifying direct contact touches of an object (such as a finger) in the touch mode. The sensing device 10 is conducive to identifying non-contact touches of an object (such as a finger) in the suspension mode. That is, the object does not directly touch the sensing device 10 but approaches the sensing device 10 in a suspended state. In one embodiment, since the user operates through air, plastic, or gloves with a small dielectric constant, the touch sensing signal in the touch mode is weak. For example, it may be about 8 to 10 times weaker than the signal intensity of the touch sensing signal generated by directly touching the glass cover in the touch mode. Therefore, the suspension mode can be switched to improve the signal quality. That is, when approaching the sensing device 10 through a material with a small dielectric constant (such as the case of suspending the operation of the glass cover, the case of suspending the operation of the plastic cover, or the case of operating while wearing thick gloves), the sensing device 10 can operate in the suspension mode.

[0040] The following describes how the suspension mode improves the signal quality. In one embodiment, in the suspension mode, the sensing device 10 can sum up the sensing signals detected by the identification sensing electrodes of the suspension units as the corresponding suspension sensing signal to increase the signal intensity. For example, in the suspension mode, multiple identification sensing electrodes of the suspension unit H 11 (i.e., the sensing electrode RX11a, the sensing electrode RX11b, the sensing electrode RX11c, the sensing electrode RX11e, the sensing electrode RX11i, the sensing electrode RX11m, the sensing electrode RX11n, and the sensing electrode RX11o) respectively detect sensing signals (which can also be respectively called the first sensing signals). The signal intensity after summing up the sensing signals detected by the multiple identification sensing electrodes is equal to the signal intensity of a suspension sensing signal. That is to say, according to some embodiments, taking the suspension unit H 11 as an example, the suspension unit H 11The suspension sensing signal can be the sum of the sensing signals respectively detected by all the identification sensing electrodes (i.e., sensing electrode RX11a, sensing electrode RX11b, sensing electrode RX11c, sensing electrode RX11e, sensing electrode RX11i, sensing electrode RX11m, sensing electrode RX11n, and sensing electrode RX11o). Compared with detecting using a single sensing electrode RX, combining multiple sensing electrodes RX into a suspension unit (e.g., suspension unit H 11 ) for detection can increase the signal strength.

[0041] In some embodiments, the sensing signal detected when touched by an object or interfered by noise is different from the sensing signal (which can be a sensing signal reference) detected when not touched by an object or not interfered by noise. According to whether the signal strengths of the sensing signals detected by multiple sensing electrodes RX form an identification pattern, it can be determined whether the sensing device 10 is touched by an object or interfered by noise. For example, in some embodiments, in the suspension mode, when all the identification sensing electrodes (i.e., sensing electrode RX11a, sensing electrode RX11b, sensing electrode RX11c, sensing electrode RX11e, sensing electrode RX11i, sensing electrode RX11m, sensing electrode RX11n, and sensing electrode RX11o) in the suspension unit H 11 respectively detect sensing signals with signal strengths different from the sensing signal reference, and these identification sensing electrodes form the identification pattern PN1, the sensing device 10 can be determined to be touched by an object. In the suspension mode, when only some of the identification sensing electrodes (e.g., sensing electrode RX11a and sensing electrode RX11o) in the suspension unit H 11 detect sensing signals with signal strengths different from the sensing signal reference, such that these identification sensing electrodes (e.g., sensing electrode RX11a and sensing electrode RX11o) cannot form the identification pattern PN1, the sensing device 10 can be determined to be interfered by noise and determined that the sensing device 10 is not touched by an object. In this way, the sensing device 10 can filter out the noise, thereby improving the signal-to-noise ratio to effectively perform touch judgment.

[0042] In some other embodiments, the sensing device 10 in the suspension mode may be touched by an object at a first detection time and a second detection time when the sensing electrode RX performs detection. Due to being touched by an object, the signal strengths of the sensing signals detected by all the identification sensing electrodes (i.e., sensing electrode RX11a, sensing electrode RX11b, sensing electrode RX11c, sensing electrode RX11e, sensing electrode RX11i, sensing electrode RX11m, sensing electrode RX11n, and sensing electrode RX11o) in the suspension unit H 11 can be continuously greater than the sensing signal reference respectively within the first detection time. And, due to being touched by an object, the suspension unit H 11The signal intensities of the sensing signals detected by all the identification sensing electrodes can be continuously greater than the sensing signal reference respectively within the second detection time. In contrast, because noise is randomly distributed in time and space, when the sensing device 10 is not touched by an object but only interfered by noise, only the signal intensities of the sensing signals detected by some of the identification sensing electrodes (such as sensing electrode RX11a and sensing electrode RX11o) are greater than the sensing signal reference within the first detection time, or only the signal intensities of the sensing signals detected by some of the identification sensing electrodes (such as sensing electrode RX11b and sensing electrode RX11m) are greater than the sensing signal reference within the second detection time, while the signal intensities of the sensing signals detected by other identification sensing electrodes are all less than the sensing signal reference.

[0043] According to some embodiments, in the suspension mode, when the suspension unit H 11 the signal intensities of the sensing signals detected by all the identification sensing electrodes (i.e., sensing electrode RX11a, sensing electrode RX11b, sensing electrode RX11c, sensing electrode RX11e, sensing electrode RX11i, sensing electrode RX11m, sensing electrode RX11n, and sensing electrode RX11o) are greater than the sensing signal reference respectively within a detection time, the sensing signals detected by all the identification sensing electrodes of the suspension unit can be summed up as a corresponding suspension sensing signal. In the suspension mode, when the suspension unit H 11 the signal intensity of the sensing signal detected by at least one identification sensing electrode (such as sensing electrode RX11b) is less than the sensing signal reference within a detection time, the sensing signal can be regarded as noise and filtered out.

[0044] In order to improve the signal strength, in one embodiment, the signal strength of the floating drive signal applied to the sensing electrode RX can be increased. The signal strength of the sensing signal of the sensing electrode RX in the floating mode (which can also be referred to as the first sensing signal) can be greater than the signal strength of the touch sensing signal of the sensing electrode RX in the touch mode (which can also be referred to as the second sensing signal). For example, for the recognition sensing electrodes corresponding to the recognition pattern PN1 (i.e., sensing electrode RX11a, sensing electrode RX11b, sensing electrode RX11c, sensing electrode RX11e, sensing electrode RX11i, sensing electrode RX11m, sensing electrode RX11n, and sensing electrode RX11o), they are driven by a plurality of touch drive signals in the touch mode and by a plurality of floating drive signals in the floating mode. The signal strength of the floating drive signal in the floating mode can be greater than the signal strength of the touch drive signal in the touch mode. According to some examples, for a sensing electrode RX, compared with the touch drive signal in the touch mode, the floating drive signal in the floating mode can have a higher voltage, a larger current, or more pulses within a driving time. For example, for a recognition sensing electrode (such as recognition sensing electrode RX11a), the first voltage of the floating drive signal in the floating mode can be higher than the second voltage of the touch drive signal in the touch mode. For recognition sensing electrode RX11a, the first current of the floating drive signal in the floating mode can be greater than the second current of the touch drive signal in the touch mode. For recognition sensing electrode RX11a, the first number of pulses of the floating drive signal in the floating mode can be more than the second number of pulses of the touch drive signal in the touch mode.

[0045] The above are only embodiments of the present disclosure, and those skilled in the art can make different changes and modifications accordingly. Different embodiments of the present disclosure will be described below, and for the sake of simplicity, the same parts will not be repeated in the following description. In addition, the same elements in each embodiment of the present disclosure are labeled with the same reference numerals for convenient comparison between the embodiments.

[0046] Please refer to Figure 3 , Figure 3 which is a schematic diagram of a sensing device 20 in an embodiment of the present disclosure. Figure 3 The architecture of the shown sensing device 20 is similar to Figure 1 the shown sensing device 10, so the same elements are represented by the same symbols. The sensing device 20 can be a touch display device. As Figure 3As shown, the sensing device 20 may include a touch display panel 200 and a driving circuit 202. The driving circuit 202 may be electrically connected to the touch display panel 200. According to some embodiments, the driving circuit 202 may be a Touch and Display Driver Integration (TDDI) chip 202. The touch display panel 200 may include a substrate 100 and sensing electrodes RX. As described above, the sensing electrodes RX may be grouped into suspended units H 11 ~ suspended units H mn . The touch display panel 200 may be an In-cell touch display panel. In this case, the sensing electrodes RX may be integrated into the display elements of the touch display panel. According to some embodiments, in the display mode, the sensing electrodes RX may serve as a common electrode. That is, the common electrode and the sensing electrodes RX may be the same element. The Touch and Display Driver Integration chip 202 may integrate the touch chip and the display chip into a single chip. The Touch and Display Driver Integration chip 202 may include a driving unit 204, a multiplexer 206, a sensing unit 208, a processing unit 210, and a memory 212. The sensing electrodes RX in the suspended units H 11 may be coupled to the multiplexer 206. However, for the sake of simplicity, Figure 3 only some of the sensing electrodes RX in the suspended units H 11 are shown coupled to the multiplexer 206. The memory 212 may be used to store a plurality of recognition patterns. The processing unit 210 may be used to recognize patterns.

[0047] Figure 4 is a schematic diagram of a sensing method according to an embodiment of the present disclosure. In some embodiments, the operation of the sensing device 20 may be summarized as Figure 4 the sensing method 40 shown, which may include the following steps:

[0048] Step S400: Start.

[0049] Step S402: In a suspended mode, provide suspended driving signals to some of the sensing electrodes RX respectively to form a plurality of recognition sensing electrodes, and the plurality of recognition sensing electrodes have a recognition pattern.

[0050] Step S404: Recognize the recognition pattern.

[0051] Step S406: End.

[0052] The steps of the touch panel operation method are described in detail as follows.

[0053] As described above, the sensing device 20 can operate in a touch mode or a hovering mode. When operating in the touch mode, the driving unit 204 transmits touch driving signals to the sensing electrodes RX respectively, and then performs touch function output according to the touch sensing signals respectively sensed by the sensing electrodes RX. In one embodiment, when operating in the hovering mode, the driving unit 204 transmits hovering driving signals to the identification sensing electrodes (such as Figure 2 the first part HP1 of the hovering unit H 11 ), but does not transmit the hovering driving signals to the non-identification sensing electrodes (such as Figure 2 the fourth part HP4 of the hovering unit H 11 ), and then performs hovering function output according to the sensing signals respectively sensed by the identification sensing electrodes.

[0054] In one embodiment, when operating in the hovering mode, the processing unit 210 can read from the memory 212 what the identification patterns in each hovering unit are (for example, obtain the information corresponding to the identification pattern PN1 of the hovering unit H 11 ). The processing unit 210 can set the signal intensity of the hovering driving signal (such as adjusting voltage, current or pulse number), and in step S402, instruct the driving unit 204 to transmit the hovering driving signals to the identification sensing electrodes in the hovering unit respectively, but does not transmit the hovering driving signals to the non-identification sensing electrodes in the hovering unit. The identification sensing electrodes of the hovering unit can detect sensing signals and transmit the sensing signals to the sensing unit 208.

[0055] Since the sensing signals detected when not touched by an object or not interfered by noise are different from those detected when touched by an object or interfered by noise and can be equal to a sensing signal reference, in step S404, the sensing device 10 can determine whether a plurality of sensing electrodes RX that detect sensing signals with signal intensities different from the sensing signal reference form an identification pattern, so as to determine whether the sensing device 10 is touched by an object or interfered by noise, and filter out noise accordingly. For example, the sensing electrodes RX11a, RX11b, RX11c, RX11e, RX11i, RX11m, RX11n and RX11o of the hovering unit H 11 all detect sensing signals with signal intensities different from the sensing signal reference and form the identification pattern PN1, and the processing unit 210 can identify the identification pattern PN1 and thereby determine that the sensing device 10 is touched by an object. And, the processing unit 210 can sum up the sensing signals respectively detected by the identification sensing electrodes in the hovering unit as the corresponding hovering sensing signal, and, the processing unit 210 can perform hovering function output according to the hovering sensing signal.

[0056] As described above, the processing unit 210 can be used to recognize the recognition pattern. In addition, the processing unit 210 can be used to detect a sensing signal (which can also be referred to as a first sensing signal) from the recognition sensing electrode of the suspension unit in the suspension mode, and the processing unit 210 can be used to sum up a plurality of sensing signals to obtain a suspension sensing signal. In addition, the processing unit 210 can also be used to detect a sensing signal (which can also be referred to as a second sensing signal) from the recognition sensing electrode of the suspension unit in the touch mode. In one embodiment, the signal strength of the first sensing signal can be less than the signal strength of the second sensing signal.

[0057] Figure 5 It is a schematic diagram of a sensing method in an embodiment of the present disclosure. In some embodiments, the operation of the sensing device 20 can be summarized as Figure 5 the sensing method 50 shown, which may include the following steps:

[0058] Step S500: Start.

[0059] Step S502: Provide a preset signal strength.

[0060] Step S504: Detect the sensing signals of the sensing electrodes of a part in a suspension unit.

[0061] Step S506: Compare the signal strength of the sensing signal with the preset signal strength.

[0062] Step S526: When the signal strength of the detected sensing signal is greater than the preset signal strength, switch the sensing device to the touch mode.

[0063] Step S528: In the touch mode, provide touch driving signals for all the sensing electrodes RX respectively, and output touch sensing signals.

[0064] Step S536: When the signal strength of the detected sensing signal is less than the preset signal strength, switch the sensing device to the suspension mode.

[0065] Step S538: In the suspension mode, provide suspension driving signals for some of the sensing electrodes RX respectively to form a plurality of recognition sensing electrodes, and the plurality of recognition sensing electrodes have a recognition pattern.

[0066] Step S539: Recognize the recognition pattern.

[0067] Step S540: End.

[0068] The steps of the touch panel operation method are described in detail as follows.

[0069] In steps S502 to S506, the sensing device 20 determines whether to operate in the touch mode or the hovering mode. In one embodiment, a preset signal strength can be set in step S502. In an initial state, the touch display driving integrated chip 202 can be preset to operate in the touch mode, and the driving unit 204 can respectively transmit touch driving signals to the sensing electrodes RX through the multiplexer 206. In step S504, the multiplexer 206 respectively receives the initial sensing signals generated by the corresponding touch driving signals from the sensing electrodes RX, and transmits the initial sensing signals from the sensing electrodes RX to the sensing unit 208 to judge the signal strength of the initial sensing signals. The processing unit 210 can judge whether the sensing device 20 will operate in the touch mode or the hovering mode subsequently according to the signal strength of the initial sensing signals in the initial state. In step S506, when at least one of the plurality of initial sensing signals is greater than the preset signal strength, it is judged that the sensing device 20 will operate in the touch mode subsequently, and step S526 is performed to maintain the sensing device 20 in the touch mode. According to some embodiments, for example, the preset signal strength can be SS. When the initial sensing signal is greater than SS, step S526 is performed. For example, the initial sensing signal can be more than 2 times the preset signal strength SS. For example, the initial sensing signal can be 2 to 12 times SS. For example, the initial sensing signal can be 8 to 10 times SS, then step S526 is performed to maintain the sensing device 20 in the touch mode.

[0070] When all of the plurality of initial sensing signals (or the plurality of touch sensing signals) are less than the preset signal strength, it is judged that the sensing device 20 will operate in the hovering mode subsequently, and step S536 is performed to switch the sensing device 20 to the hovering mode. For example, when the user operates through air, plastic or gloves with a relatively small dielectric constant, the initial sensing signals in the touch mode may be weak, and all of the plurality of initial sensing signals may be less than the preset signal strength. Therefore, the sensing device 20 can switch from the preset touch mode to the hovering mode.

[0071] In another embodiment, the sensing device 20 can switch from the touch mode to the hovering mode. In one embodiment, when the sensing device 20 operates in the touch mode, it can judge whether to switch to the hovering mode according to the signal strength of the plurality of touch sensing signals detected by the sensing electrodes RX. When at least one of the touch sensing signals is greater than the preset signal strength, it is judged that the sensing device 20 will operate in the touch mode subsequently, and the sensing device 20 is maintained in the touch mode. When the touch sensing signal is less than the preset signal strength, it is judged that the sensing device 20 will operate in the hovering mode subsequently, and the sensing device 20 is switched to the hovering mode.

[0072] The following describes how to prove whether a product uses the sensing device of the embodiment of the present invention. In one embodiment, an oscilloscope can be used for measurement to determine whether the sensing electrodes of the RX region of the floating unit (such as floating unit H 11 ) in the sensing device product are divided into identification sensing electrodes and non-identification sensing electrodes. For example, if the oscilloscope detects signals of a part of the sensing electrodes RX (such as sensing electrode RX11a, sensing electrode RX11b, sensing electrode RX11c, sensing electrode RX11e, sensing electrode RX11i, sensing electrode RX11m, sensing electrode RX11n, and sensing electrode RX11o), but does not detect signals of another part of the sensing electrodes RX (such as sensing electrode RX11d, sensing electrode RX11f, sensing electrode RX11g, sensing electrode RX11h, sensing electrode RX11j, sensing electrode RX11k, sensing electrode RX111, and sensing electrode RX11p), and the sensing electrodes RX with signals always form an identification pattern (such as a C-shaped identification pattern PN1). In this way, it can be known that the sensing electrodes RX of the floating unit (such as floating unit H 11 ) in the sensing device are indeed divided into identification sensing electrodes and non-identification sensing electrodes.

[0073] In summary, according to some embodiments, the present disclosure groups the sensing electrodes into multiple floating units. The sensing electrodes of the floating units of the present disclosure can be divided into identification sensing electrodes and non-identification sensing electrodes. In the floating mode, the identification sensing electrodes can have signals, and the non-identification sensing electrodes do not have signals. According to some embodiments, the sensing device of the present disclosure can sum up the sensing signals detected by the identification sensing electrodes of the floating units as the corresponding floating sensing signals to improve the signal strength. According to some embodiments, the sensing device of the present disclosure can determine whether the detected signals are normal signals or noises according to whether the signal strengths of multiple detected sensing electrodes form an identification pattern, and can filter out the noises, thereby improving the signal-to-noise ratio.

[0074] The above are only embodiments of the present disclosure and are not used to limit the present disclosure. For those skilled in the art, the present disclosure can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A sensing device having a suspension mode, characterized in that, Comprising: A substrate; And A plurality of sensing electrodes disposed on the substrate, which in the floating mode are defined as a plurality of floating units, wherein the plurality of floating units includes a first floating unit, and the first floating unit includes a plurality of identification sensing electrodes, and the identification sensing electrodes have signals and form a first identification pattern. Wherein, in the floating mode, the first floating unit includes sensing electrodes without signals. Wherein, in the floating mode, when the signal intensities respectively detected by the identification sensing electrodes are different from a sensing signal reference, and the identification sensing electrodes form the first identification pattern, it is determined that the sensing device is touched.

2. The sensing device according to claim 1, characterized in that In the floating mode, the plurality of floating units includes a second floating unit, and the sensing electrodes with signals in the second floating unit form a second identification pattern, wherein the first identification pattern and the second identification pattern are different.

3. The sensing device according to claim 1, characterized in that In the floating mode, the plurality of floating units further includes a third floating unit, and the sensing electrodes with signals in the third floating unit form a third identification pattern, wherein the first identification pattern and the third identification pattern are the same.

4. The sensing device according to claim 1, wherein The sensing device has a touch mode, wherein the sensing electrodes in the first floating unit that do not have signals in the floating mode have signals in the touch mode.

5. The sensing device according to claim 1, characterized in that, Further comprising a processing unit, wherein in the floating mode, the processing unit is used to identify the first identification pattern.

6. The sensing device according to claim 5, wherein, The sensing device has a touch mode, wherein in the floating mode, the processing unit is used to detect a first sensing signal of at least one sensing electrode in the first floating unit, and in the touch mode, the processing unit is used to detect a second sensing signal of the at least one sensing electrode in the first floating unit, wherein the intensity of the first sensing signal is less than the intensity of the second sensing signal.

7. The sensing device according to claim 1, characterized in that, The sensing device has a display mode, wherein in the display mode, the plurality of sensing electrodes serve as a common electrode.

8. A sensing method for a sensing device, wherein the sensing device includes a substrate; and a plurality of sensing electrodes disposed on the substrate. In a suspension mode, the plurality of sensing electrodes are defined as a plurality of suspension units, and the plurality of suspension units include a first suspension unit, characterized in that, The sensing method includes the following steps: Storing a first identification pattern of the first floating unit; In the floating mode, providing signals to a part of the sensing electrodes in the first floating unit to form a plurality of identification sensing electrodes, and not providing signals to another part of the sensing electrodes in the first floating unit to form a plurality of non-identification sensing electrodes; The identification sensing electrodes form the first identification pattern; and In the floating mode, when the signal intensities respectively detected by the identification sensing electrodes are different from a sensing signal reference, and the identification sensing electrodes form the first identification pattern, it is determined that the sensing device is touched.

9. The sensing method according to claim 8, wherein The method further includes the following steps: Providing a preset signal intensity; Detecting a sensing signal of at least one sensing electrode in the first floating unit; and When the intensity of the detected sensing signal is greater than the preset signal intensity, switching the sensing device to a touch mode, and when the intensity of the detected sensing signal is less than the preset signal intensity, switching the sensing device to the floating mode.

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