TWI450149B - Touch apparatus and touch panel - Google Patents

Description

Touch device and touch panel

The present invention relates to a sensing device, and more particularly to a touch device and a touch panel.

With the development of electronic devices toward multi-functionality, the traditional mouse-type or push-button human-machine interface has gradually failed to meet the needs of users. In this case, the touch panel began to flourish. Compared to the traditional mouse-type or push-button operation interface, the operation of the touch panel is simpler and more intuitive. With the touch panel, users can directly click on objects, menus or graphics on the screen with their fingers or stylus, or use a variety of different gestures to manipulate these objects, menus or graphics.

In general, the touch panel includes a resistive touch panel and a capacitive touch panel. A conventional projected capacitive touch panel determines the touch position of a finger by detecting a change in capacitance caused by a user's finger touch. In the projected capacitive touch panel, the conventional technology generally uses a glass cover as a touch medium for the outermost human interface of the touch panel. In other words, the user's finger touches the glass cover to perform a touch operation. Since the glass cover is less flexible, the conventional projected capacitive touch panel can only sense the touch position of the user's finger, and cannot sense the touch force of the finger.

In addition, in order to achieve high transmittance, the touch panel disposed on the display panel often causes excessive impedance when designing the transparent conductive layer. Especially when the size of the touch panel is larger, the change in capacitance is more difficult to detect.

One embodiment of the present invention provides a touch device including a touch panel and a signal generating unit. The touch panel includes a sensing pattern layer and an elastic dielectric layer, wherein the elastic dielectric layer is disposed on the sensing pattern layer. The signal generating unit is configured to output a plurality of time-varying signals to the sensing pattern layer, and the sensing pattern layer outputs a plurality of reading signals in response to the time-varying signals. When the degree to which the elastic dielectric layer is deformed by a touch object touching the touch panel is greater, the amplitude of the read signal corresponding to the touch position of the touch object changes more.

Another embodiment of the present invention provides a touch panel including a substrate, a sensing pattern layer, and an elastic dielectric layer. The sensing pattern layer is disposed on the substrate, and the elastic dielectric layer is disposed on the sensing pattern layer. When the elastic dielectric layer is deformed by compression, the dielectric constant of the elastic dielectric layer changes.

In order to make the above-described features of the present invention more comprehensible, the following detailed description of the embodiments will be described in detail below.

1A is a schematic diagram of a touch device according to an embodiment of the present invention, and FIG. 1B is a top view of the sensing pattern layer of FIG. 1A, wherein the touch panel illustrated in FIG. 1A is a cross-sectional view of the touch panel. . Referring to FIG. 1A and FIG. 1B , the touch device 100 of the embodiment includes a touch panel 200 . And a signal generating unit 110. The touch panel 200 includes a sensing pattern layer 210 and an elastic dielectric layer 220. The elastic dielectric layer 220 is disposed on the sensing pattern layer 210. In this embodiment, the touch panel 200 further includes a substrate 230 , and the sensing pattern layer 210 is disposed on the substrate 230 . In the present embodiment, the substrate 230 is a transparent substrate, such as a glass substrate or other transparent material substrate. In one embodiment, the substrate 230 is, for example, a flexible substrate or a rigid substrate. The material of the flexible substrate is, for example, plastic, and the material of the rigid substrate is glass. In addition, in the embodiment, the sensing pattern layer 210 includes a plurality of first sensing strings 212 and a plurality of second sensing strings 214. The first sensing strings 212 form an intersecting configuration with the second sensing strings 214, and the first sensing strings 212 form a capacitive coupling with the second sensing strings 214. Specifically, each first sensing string 212 includes a plurality of first sensing pads 211 connected in series, and each second sensing string 214 includes a plurality of second sensing pads 215 connected in series, and these first The first sensing pads 211 of the sensing string 212 and the second sensing pads 215 of the second sensing strings 214 are in a staggered configuration. In this embodiment, the first sensing pads 211 and the second sensing pads 215 are all diamond-shaped and are alternately distributed on a whole surface. However, in other embodiments, the first sensing pads 211 and the second sensing pads 215 may also be alternately distributed on a whole surface in other suitable shapes. Alternatively, in another embodiment, the first sensing strings 212 and the second sensing strings 214 may also be in any shape that can locate a touch location.

In this embodiment, the adjacent two first sensing pads 211 can be connected by a conductive connecting portion 213, and the adjacent two second sensing pads 215 can be connected by a conductive connecting portion 217. In this embodiment, the sensing pattern layer 210 is a transparent conductive layer, and the material thereof may include indium tin oxide or other transparent conductive material. Further, in the present embodiment, when the elastic dielectric layer 220 is pressed to be deformed, the dielectric constant of the elastic dielectric layer 220 may change. For example, the material of the elastic dielectric layer includes at least one of an organic material, an inorganic material, a composite material, and a polymer material, wherein the inorganic material is, for example, Si _x O _y , and x and y are both greater than zero. Specifically, the material of the elastic dielectric layer is, for example, polyethylene terephthalate (PET), polycarbonate (PC), polyester (PE), polyamidide (polyimide). , PI), other polymeric materials or other polymers.

In this embodiment, the touch panel 200 further includes a protective layer 240 disposed on the elastic dielectric layer 220 to protect the elastic dielectric layer 220. The material of the protective layer 240 may include at least one of an organic material, an inorganic material, a composite material, and a polymer material, wherein the inorganic material is, for example, Si _x O _y , and x and y are both greater than zero.

In this embodiment, the touch panel 200 is a transparent panel that can be disposed on the screen of the display for use with the display. However, in other embodiments, the touch panel 200 may also be an opaque panel, which may be disposed on the screen instead of being disposed on the screen. For example, the touch panel 200 can also be used as a touch pad on a keyboard stand of a notebook computer.

The signal generating unit 110 is configured to output a plurality of time-varying signals 112 to the sensing pattern layer 210, and the sensing pattern layer 210 outputs a plurality of reading signals 202 in response to the time-varying signals 112, wherein the time-varying signal 112 is, for example, Streaming signal. In this embodiment, the time-varying signal 112 is, for example, an alternating voltage signal, and the read signal 202 is also an alternating voltage signal, for example. In this embodiment, a digital signal generator 40 can be used to generate a digital signal 42 to the signal generating unit 110, and the signal generating unit 110 generates a corresponding time varying signal 112 according to the digital signal 42. In addition, in the embodiment, the signal generating unit 110 transmits the time-varying signals 112 to the first sensing strings 212, and the read signals 202 are respectively output from the second sensing strings 214.

In this embodiment, the signal generating unit 110 sequentially transmits the time-varying signals 112 to the first sensing strings 212, and the instant variable signals 112 are scanning signals. However, in other embodiments, the signal generating unit 110 can simultaneously transmit the time varying signals 112 to the first sensing strings 212, respectively.

2A is a schematic diagram of a touch device when the touch panel of FIG. 1A is touched by a touch object, FIG. 2B is a partial perspective view of the touch object when the touch panel is touched, and FIG. 3A is a touch panel of FIG. 1A. The waveform of the time-varying signal and the read signal is not touched by the touch object, and FIG. 3B is the waveform diagram of the time-varying signal and the read signal when the touch panel of FIG. 2B is touched by the touch object. Referring to FIG. 2A, FIG. 2B, FIG. 3A and FIG. 3B, when a touch object 60 (for example, a user's finger or a stylus tip) touches the touch panel 200, the touch corresponding to the touch object 60 is touched. The amplitude of the read signal at the touch position changes. For example, when the touch object 60 touches the vicinity of the second sensing string 214 of the column corresponding to the read signal 202a (ie, the Y ₁ column), the amplitude of the read signal 202a changes. In the embodiment, for example, the amplitude becomes large. On the other hand, if the second sensing string 214 of the column corresponding to the read signal 202b (ie, the Y ₂ column) is not touched by the touch object 60, the amplitude of the read signal 202b hardly changes. In general, the further the distance between the second sensing string 214 and the touched object 60 is, the less the amplitude of the read signal 202b output by the second sensing string 214 changes. 3A and FIG. 3B read signal corresponding to the first column of Y ₁ in FIG. 2B second sensing strings 214 output from the read signal 202. Comparing FIG. 3A with FIG. 3B, the amplitude of the read signal 202 when touched is significantly larger than the amplitude of the read signal 202 when not touched.

In this embodiment, since the elastic dielectric layer 220 has elasticity, when the touch object 60 is pressed against the touch panel 200, the elastic dielectric layer 220 is depressed, as shown in FIG. 2A. When the touch object 60 touches the touch panel 200 to make the elastic dielectric layer 220 deform more (in the present embodiment, the degree of sag is larger), the touch position corresponding to the touch object 60 The larger the amplitude change of the read signal 202 (e.g., the read signal 202a) (in this embodiment, the more the amplitude is increased). In this embodiment, when the degree of depression of the elastic dielectric layer 220 is larger, the dielectric constant of the elastic dielectric layer changes at the pressed portion, so that the capacitance value at the pressed portion changes more, thereby making the reading The amplitude of the signal 202 is changed more. In this embodiment, the greater the force of the touch object 200 pressing the touch panel 200, the greater the degree of depression of the elastic dielectric layer 220, and thus the read signal 202 corresponding to the touch position of the touch object 60. The larger the amplitude change. For example, the touch object when the pressing force is smaller channel 60, the second sensing strings 214 outputs a first read signal Y ₁ column 202a ', and when the pressing force of the touch object channel 60 is large, the first The second sensing string 214 of the Y ₁ column outputs the read signal 202a, wherein the amplitude A of the read signal 202a is greater than the amplitude A' of the read signal 202a'.

In this embodiment, the touch device 100 further includes a reading unit 120 for receiving the read signals 202 from the sensing pattern layer 210, and determining the touch position of the touch object 60 by using the read signals 202. And the depth at which the touch object touches the touch panel 200. The determination of the touch position can be determined by the numerical distribution and size of the read signal 202 output by the second sensing strings 214, and the touch object touches the depth of the touch panel 200 (ie, the depth of the pressing, which corresponds to The force of pressing can be judged from the change in amplitude of the read signal 202. In this embodiment, after the analysis of the read signal 202, the interpretation unit 120 can transmit the analysis result to a host 50, so that the user can use the touch object 60 to operate various functions of the host 50. . The host 50 is, for example, a computer, a mobile phone, a personal digital assistant (PDA), a digital camera, other handheld electronic devices, or other electronic devices.

In the touch device 100 and the touch panel 200 of the present embodiment, the force applied by the touch object 60 causes the elastic dielectric layer 220 to deform to different degrees, thereby causing the amplitude of the read signal 202 to change to different degrees. Therefore, in addition to sensing the touch position of the touch object 60, the touch device 100 and the touch panel 200 of the present embodiment can sense the touch force of the touch object 60 (ie, corresponding to the press. depth). As a result, the application level of the touch device 100 and the touch panel 200 can be wider. In addition, the touch device 100 of the present embodiment can use the characteristic of the amplitude change of the read signal 202 to determine the touch state, so that the touch panel 200 of the embodiment can be applied. For large-size touch panels. In other words, even if the area of the touch panel 200 is large, the touch device 100 can effectively interpret the touch state. In addition, in another embodiment, the function of sensing the touch force of the touch device 100 may also be turned off, or may not have the function of sensing the touch force, but only the touch position of the touch object 60.

4 is a schematic diagram of a use situation of the touch panel of FIG. 1A under multi-touch, and FIG. 5A is a waveform diagram of a time-varying signal and a read signal when the touch panel of FIG. 4 is not touched by a touch object, FIG. 5B is a waveform diagram of the time-varying signal and the read signal when the touch panel of FIG. 4 is touched by the touch object. Referring to FIG. 1A, FIG. 4, FIG. 5A and FIG. 5B, the touch device 100 of the present embodiment is also applicable to a multi-touch situation. As shown in FIG. 4 , when a plurality of touch objects 60 touch the touch panel 200 at the same time, for example, two touch objects 60 simultaneously touch the second sensing strings 214 of the Y ₁ column respectively. second sensing strings 214 near the second Y ₂ column, the second row of the sensing column 214 Y ₁ output from the read signal 202a and the second Y ₂ column second sensing strings 214 of the read signal output 202b will have a large amplitude, as shown in FIGS. 5A and 5B, the read signals 202a and 202b. Therefore, the touch device 100 of the embodiment can also achieve the function of multi-touch.

Referring to FIG. 1B , FIG. 2A and FIG. 2B , in the embodiment, the determining unit 120 includes a comparator 140 for comparing the amplitudes of the read signals 202 with the amplitudes of the time-varying signals 112 . In this way, the interpretation unit 120 can know the amplitude of the read signal 202. In addition, in the embodiment, the interrogation unit 120 further includes an analog-to-digital converter 130 coupled between the sensing pattern layer 210 and the comparator 140 to read the signal 202. Converting the analog form to a digital form also converts the read signal 202 into a digital signal 132, and the comparator 140 analyzes the digital read signal 202 (ie, the digital signal 132). Specifically, the digital signal 42 generated by the digital signal generator 40 is also transmitted to the comparator 140, and the comparator 140 can indirectly compare the read signal 202 with respect to the time change by comparing the digital signal 42 with the digital signal 132. The amplitude of the signal 112 varies. Furthermore, in the embodiment, the interpretation unit 120 further includes an adapter 150 for determining a threshold according to the use environment (eg, temperature, humidity, external pressure factor of the user's pressure channel, etc.). (threshold value). When the amplitude change of the read signal 202 is less than the threshold value, the determining unit 120 determines that the position on the touch panel 200 corresponding to the read signal 202 is not touched, and when the amplitude change of the read signal 202 is greater than the threshold value. The determining unit 120 determines that the position on the touch panel 200 corresponding to the read signal 202 is touched. In the present embodiment, the adaptor 150 can be electrically connected to the analog-to-digital converter 130 and the comparator 140 to co-process the read signal 202 with the analog-to-digital converter 130 and the comparator 140.

FIG. 6 is an operation timing diagram of the touch device of FIG. 1A. Referring to FIG. 1A , FIG. 1B , FIG. 2B and FIG. 6 , the operation timing diagram of the touch device 100 illustrated in FIG. 6 is only used as an example, and the time-varying signal 112 is illustrated along FIG. 2B . The scanning direction scans the first sensing string 212, but Figure 6 is not intended to limit the invention. The rectangle in the frame 1 of Fig. 6 represents the time elapsed during the period of time below the equal length. In this embodiment, the signal generating unit 110 and the determining unit 120 can share the same clock signal so that the scanning time of the time varying signal 112 and the time when the reading unit 120 processes the reading signal 202 match each other. The rectangles of X ₀ , X ₁ , ... and X _N of the column of the time-varying signal in Fig. 6 respectively represent that the time-varying signal is input to the X ₀ , X ₁ , ... and X _N lines during the period represented by the rectangle. a first sensing strings 212, and FIG. 2B shows only the first line X ₁ X ₂ and the second row sensing strings Example. In addition, during the time when the time-varying signal is scanned to each of the first sensing strings 212, the read signals 202 of the second sensing strings 214 of all the columns are sequentially output to the reading unit 120. For example, Y rectangles represent ₀ in the time of the rectangle represented by Y ₀ column of the second sensing strings 214 outputs the read signal 202, and the rectangle represents Y ₁ in the time of the rectangle represented by Y ₁ The column second sense string 214 outputs a read signal 202. The meaning of the rectangles of Y ₂ and Y _N can be deduced by analogy. In addition, V ₀ , V ₁ , V _{2 ,} and V _{N in} FIG. 6 represent the amplitudes of the read signals 202 output by the second sensing strings 214 in the Y ₀ , Y ₁ , Y _{2 ,} and Y _N columns, respectively. In other words, a coordinate data and an amplitude data can be obtained during the scan time of a time-varying signal. For example, the data of coordinate 0 and an amplitude data can be obtained within the time represented by X ₀ , and the time represented by X ₁ The data of coordinate 1 and another amplitude data can be obtained. In a frame time (for example, the time in frame 1), a column data is obtained, wherein the column data includes coordinate 1 data and its corresponding amplitude data, coordinate 2 data and corresponding amplitude data, ... and coordinates. N data and its corresponding amplitude data. Based on the information represented by the integrated data, the host 50 or the reading unit 120 can know the position touched by the touch object 60 and the force it presses (ie, the depth corresponding to the pressing).

FIG. 7 is a flow chart showing the operation of the touch device of FIG. 1A at the test time. Referring to FIG. 2A and FIG. 7 , in the embodiment, the determining unit 120 further includes A correcting unit 160 is configured to adjust the output of the touch panel 200 for a normal use time according to the read signal 202 output by the sensing pattern layer 210 when the touch object 60 touches the touch panel 200 during a test time. These read signals. In this embodiment, the correction unit 160 can be electrically connected to the analog-to-digital converter 130 to calibrate the read signal 202 in digital form. Specifically, the time of the frame 1 shown in FIG. 6 is the normal use time, and before the normal use time, the steps of FIG. 7 may be performed first. In step S110, the touch device 100 can detect the user applying a power mode. In this mode, the touch device 100 can notify the user through the user interface (such as a screen) to apply a force by touching the object 60. The force is, for example, the maximum force that the user can apply) to the touch panel 200, and this force causes the sensing pattern layer 210 to output a corresponding read signal 202. Then, in step S120, it is determined whether the process of detecting the force applied by the user has been completed. If not, the process returns to step S110, and if the detection is completed, the user applies the force detection mode (ie, the step is completed). S130). The manner of determining whether the detection is completed may be judged from whether the interpretation unit 120 senses the amplitude change of the read signal 202, or from whether a predetermined test time has elapsed. Alternatively, other appropriate methods can be used to judge. When the detection is completed, the adaptor 150 can record the maximum amplitude change of the read signal 202 sensed in step S110, and use the amplitude change as a reference value. Then, during the normal use time, the correcting unit 160 correspondingly adjusts the amplitude of the read signal 202 according to the reference value. For example, when the amplitude of the read signal 202 is equal to the reference value, the amplitude of the read signal can be adjusted to a maximum amplitude, and when the amplitude of the read signal is less than the reference value, The amplitude of the read signal can be generated according to the ratio of the amplitude of the read signal to the reference value, and the ratio of the amplitude of the adjusted amplitude to the maximum amplitude and the ratio of the amplitude of the read signal to the reference value may have some kind Correspondence relationship, for example, can be established by a mathematical relationship or a table lookup. The corrected read signal 202 can be output to the host 50 to let the host 50 know the touch position and the touch force.

In this way, the touch device 100 of the embodiment can be applied to users with different finger forces. For example, the maximum pressure channel of the child is lower than the maximum pressure channel of the young man, and the correction unit 160 can correspond the two different maximum pressure channels to a maximum amplitude. In this way, even if the child and the young man have different finger forces, the same operation as the host 50 can be achieved.

FIG. 8A illustrates the use situation of the touch device of FIG. 1A in brush writing, FIG. 8B illustrates the stroke effect of the pen tip of FIG. 8A under different pressure strokes, and FIG. 9 illustrates the touch of the brush with FIG. 8A. The glyph generated when the control panel 200 writes Chinese characters. Referring to FIG. 8A, FIG. 8B and FIG. 9, in the embodiment, the touching object is a stroke 62' of a writing brush 60', and the deformation generated by the elastic dielectric layer 220 corresponds to the force applied by the writing edge 62'. The read signals 202 output by the sensing pattern layer 210 convey the calligraphy strokes formed by the pen edge 62' on the touch panel 200. As can be seen from Fig. 8B, in the stroke of Fig. 8B, the force applied by the tip 62' is decreased from left to right, and the larger the value of the column in which the force is applied in Fig. 8B, the smaller the applied force. The greater the force applied, the heavier the stroke effect and the thicker the stroke. The smaller the applied force, the lighter the stroke effect and the thinner the stroke. With a brush 60’ For example, the word "person" in Fig. 9 is written. When the pen edge 62' is from the position P1 to the position P2, the force applied to the touch panel 200 by the pen tip 62' is gradually reduced. When the pen edge 62' is from the position P3 to the position P4, the force applied to the touch panel 200 by the pen tip 62' is gradually increased. When the pen edge 62' is from the position P4 to the position P5, the force applied to the touch panel 200 by the pen tip 62' is gradually reduced. It can be seen from the above that the touch panel 200 of the present embodiment can achieve the effect of recording a calligraphy work, and then combines traditional art with modern technology. For the modern people who fight every minute, the time of grinding and waiting for the ink to dry is not economically beneficial, and the touch panel 200, which can achieve the effect of recording calligraphy works, saves time and helps the traditional culture. inherited.

In addition, the writing mode of the touch panel 200 is not limited to using the pen edge 62' as a touching object, and a finger may be used as the touching object. When the finger force is heavy, the stroke is thicker and heavier, and when the finger is light, When the strokes are thin and light.

Similarly, the bristles of the brush can also be used as a touch object, and when the bristles are applied to the touch panel 200, the force is generated, and a darker color is generated, and when the bristles are applied to the touch panel 200, the force is generated. Lighter colors. In this way, the touch panel 200 can also achieve the effect of recording watercolors.

The above-mentioned touch object 60, the writing brush 60' and the brush are preferably electrically conductive, which helps the touch device 100 to sense the change in the capacitance value. When the object 60 is touched, the finger belongs to the conductive object, and the capacitance value can be changed.

In summary, in the touch device and the touch panel of the embodiment of the present invention, the elastic dielectric layer is generated differently due to the force of pressing the object. In addition, the touch device and the touch panel of the embodiment of the present invention can sense the touch position of the touch object, and can also sense the amplitude of the touch signal. The touch force that touches the object (ie, the depth corresponding to the press). In this way, the application level of the touch device and the touch panel can be wider. In addition, the touch device of the embodiment of the present invention can read the touch state by using the characteristic of the amplitude change of the read signal, so that the touch panel of the embodiment of the present invention can be applied to the touch panel of a large size. In other words, even if the area of the touch panel is large, the touch device of the embodiment of the present invention can effectively interpret the touch state.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the invention, and any one of ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims.

40‧‧‧Digital Signal Generator

42, 132‧‧‧ digital signals

50‧‧‧Host

60‧‧‧Touching objects

60’‧‧‧ writing brush

62’‧‧‧ pen

100‧‧‧ touch device

110‧‧‧Signal generating unit

112‧‧‧hours change signal

120‧‧‧Interpretation unit

130‧‧‧ Analog Digital Converter

140‧‧‧ Comparator

150‧‧‧Adaptiser

160‧‧‧Correction unit

200‧‧‧ touch panel

202, 202a, 202a', 202b‧‧‧ read signals

210‧‧‧Sensing pattern layer

211‧‧‧First sensing pad

212‧‧‧First sensing string

213, 217‧‧‧ conductive connecting segments

214‧‧‧Second sensing string

215‧‧‧Second sensing pad

220‧‧‧Elastic dielectric layer

230‧‧‧Substrate

240‧‧‧protection layer

A, A’‧‧‧ amplitude

P1~P5‧‧‧Location

S110~S130‧‧‧Steps

FIG. 1A is a schematic diagram of a touch device according to an embodiment of the invention.

FIG. 1B is a top view of the sensing pattern layer of FIG. 1A.

FIG. 2A is a schematic diagram of the touch device when the touch panel of FIG. 1A is touched by a touch object. FIG.

FIG. 2B is a partial perspective view of the touch object when it touches the touch panel.

FIG. 3A is a waveform diagram of the time-varying signal and the read signal when the touch panel of FIG. 1A is not touched by the touch object.

FIG. 3B is a time-varying change of the touch panel of FIG. 2B when touched by a touch object; FIG. Waveform of signals and read signals.

FIG. 4 is a schematic diagram of a usage scenario of the touch panel of FIG. 1A under multi-touch.

FIG. 5A is a waveform diagram of the time-varying signal and the read signal when the touch panel of FIG. 4 is not touched by the touch object.

FIG. 5B is a waveform diagram of the time-varying signal and the read signal when the touch panel of FIG. 4 is touched by the touch object.

FIG. 6 is an operation timing diagram of the touch device of FIG. 1A.

FIG. 7 is a flow chart showing the operation of the touch device of FIG. 1A at the test time.

FIG. 8A illustrates a use scenario of the touch device of FIG. 1A in writing a brush.

FIG. 8B illustrates the stroke effect of the stroke of the writing brush of FIG. 8A under different pressure strokes.

FIG. 9 illustrates a glyph generated when a Chinese character is written by the brush in the touch panel 200 of FIG. 8A.

40‧‧‧Digital Signal Generator

42, 132‧‧‧ digital signals

50‧‧‧Host

60‧‧‧Touching objects

100‧‧‧ touch device

110‧‧‧Signal generating unit

112‧‧‧hours change signal

130‧‧‧ Analog Digital Converter

140‧‧‧ Comparator

150‧‧‧Adaptiser

160‧‧‧Correction unit

200‧‧‧ touch panel

202‧‧‧Read signal

210‧‧‧Sensing pattern layer

220‧‧‧Elastic dielectric layer

230‧‧‧Substrate

240‧‧‧protection layer

Claims (19)

A touch device includes: a touch panel comprising: a sensing pattern layer; and an elastic dielectric layer disposed on the sensing pattern layer; and a signal generating unit for outputting a plurality of time-varying signals And the sensing pattern layer, wherein the sensing pattern layer outputs a plurality of read signals in response to the time-varying signals, and deforms the elastic dielectric layer when a touch object touches the touch panel The greater the degree of the change, the greater the amplitude change of the read signal corresponding to the touch position of the touch object. The touch panel of claim 1, wherein the touch panel further comprises: a substrate, wherein the sensing pattern layer is disposed on the substrate; and a protective layer disposed on the elastic dielectric layer . The touch device of claim 1, further comprising a reading unit for receiving the read signals from the sensing pattern layer, and determining the touch object by the read signals The touch position and the depth at which the touch object touches the touch panel. The touch device of claim 3, wherein the reading unit comprises a comparator for comparing the amplitudes of the read signals with the amplitudes of the time-varying signals. The touch device of claim 4, further comprising an analog-to-digital converter coupled between the sensing pattern layer and the comparator to extract the read signal from an analog form Convert to digital form. The touch device of claim 3, wherein the reading unit comprises an adaptor for determining a threshold according to an environment of use, when the amplitude change of the read signal is less than the threshold, The determining unit determines that the position on the touch panel corresponding to the read signal is not touched, and when the amplitude change of the read signal is greater than the threshold, the determining unit determines the corresponding corresponding to the read signal The position on the touch panel is touched. The touch device of claim 3, wherein the reading unit further comprises a correcting unit for outputting the sensing pattern layer according to the touching object touching the touch panel during a test time The read signal adjusts the read signals output by the touch panel during a normal use time. The touch device of claim 1, wherein the sensing pattern layer comprises: a plurality of first sensing strings; and a plurality of second sensing strings, wherein the first sensing strings and the The second sensing strings form a cross-configuration, and the first sensing strings are capacitively coupled to the second sensing strings, and the signal generating unit transmits the time-varying signals to the first sensing strings respectively. And the read signals are respectively output from the second sensing strings. The touch device of claim 8, wherein the signal generating unit sequentially transmits the time-varying signals to the first sensing strings. The touch device of claim 8, wherein the signal generating unit simultaneously transmits the time varying signals to the first sensing strings. The touch device of claim 8, wherein each of the first sensing strings comprises a plurality of first sensing pads connected in series, and each of the second sensing strings comprises a plurality of series connected The first sensing pads of the first sensing strings are staggered with the second sensing pads of the second sensing strings. The touch device of claim 1, wherein when the elastic dielectric layer is deformed by compression, the dielectric constant of the elastic dielectric layer changes with the degree of the deformation. The touch device of claim 1, wherein the material of the elastic dielectric layer comprises at least one of an organic material, an inorganic material, a composite material, and a polymer material. The touch device of claim 1, wherein the touch object is a stroke of a brush, the deformation of the elastic dielectric layer corresponds to a force applied by the tip, and the sensing pattern layer The read signals outputted convey the call strokes formed by the pen on the touch panel. A touch panel includes: a substrate; a sensing pattern layer disposed on the substrate; and an elastic dielectric layer disposed on the sensing pattern layer, wherein the elastic dielectric layer is deformed when pressed When the dielectric constant of the elastic dielectric layer is It changes with the degree of the deformation. The touch panel of claim 15, wherein the material of the elastic dielectric layer comprises at least one of an organic material, an inorganic material, a composite material, and a polymer material. The touch panel of claim 15 further comprising a protective layer disposed on the elastic dielectric layer. The touch panel of claim 15, wherein the sensing pattern layer comprises: a plurality of first sensing strings; and a plurality of second sensing strings, wherein the first sensing strings and the The second sensing strings form a cross configuration, and the first sensing strings form a capacitive coupling with the second sensing strings. The touch panel of claim 15, wherein each of the first sensing strings comprises a plurality of first sensing pads connected in series, and each of the second sensing strings comprises a plurality of series connected The first sensing pads of the first sensing strings are staggered with the second sensing pads of the second sensing strings.