CN111721815B - Touch device and curing rate detection method thereof - Google Patents
Touch device and curing rate detection method thereof Download PDFInfo
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- CN111721815B CN111721815B CN202010558608.1A CN202010558608A CN111721815B CN 111721815 B CN111721815 B CN 111721815B CN 202010558608 A CN202010558608 A CN 202010558608A CN 111721815 B CN111721815 B CN 111721815B
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- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
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Abstract
A touch device comprises a touch film, a transparent cover plate and transparent optical cement. The touch film comprises a substrate, a first driving electrode strip, a first receiving electrode strip, at least one second driving electrode strip and at least one second receiving electrode strip. The first driving electrode strips and the first receiving electrode strips are arranged in the active area of the substrate. The second driving electrode strips and the second receiving electrode strips are arranged on the substrate and are positioned outside the active area. The transparent optical cement is arranged between the touch film and the transparent cover plate. The second driving electrode strips are driven to obtain the signal data of the second receiving electrode strips, so as to perform the curing rate detection operation on the transparent optical adhesive. The touch device and the method for detecting the curing rate thereof according to the embodiments of the present disclosure can perform a curing rate detection operation on the transparent optical adhesive in the touch device, so as to obtain the curing rate of the transparent optical adhesive.
Description
Technical Field
Embodiments of the present disclosure relate to a touch device, and more particularly, to a touch device and a method for detecting a curing rate thereof.
Background
Recently, touch device manufacturers have introduced full-surface lamination (full lamination) technology to avoid forming an air layer between the cover plate and the touch film when the cover plate and the touch film are laminated. The "full-plane bonding" is performed by using a solid transparent optical adhesive (OCA) or a liquid transparent optical adhesive (OCR) to completely bond the touch film and the transparent cover plate. By means of the complete adhesion of the touch film and the transparent cover plate, the overall display quality can be improved and the overall thickness can be reduced.
When a liquid clear optical cement is used, it must be subjected to a curing operation. However, due to the process error, the curing rate of the liquid transparent optical adhesive of some touch devices is not uniform, for example, the curing rate in the edge area is lower than that in the middle area. After receiving the touch devices with uneven curing rates and performing reliability tests on the touch devices, downstream manufacturers find that the surfaces of the touch devices have yellow spots. Therefore, upstream manufacturers need to find a method for detecting the curing rate of the transparent optical adhesive of the touch device to screen out products with non-uniform curing rate before shipment.
Disclosure of Invention
The present disclosure provides a touch device and a method for detecting a curing rate thereof, which can perform a curing rate detection operation on a transparent optical adhesive in the touch device to obtain the curing rate of the transparent optical adhesive.
According to the above object of the present disclosure, a touch device is provided, which includes a touch film, a transparent cover plate, and a transparent optical adhesive. The touch film comprises a substrate, a first driving electrode strip, a first receiving electrode strip, at least one second driving electrode strip and at least one second receiving electrode strip. The first driving electrode strips and the first receiving electrode strips are intersected with each other and arranged in the active area of the substrate. The second driving electrode strips and the second receiving electrode strips are intersected with each other and arranged on the substrate and positioned outside the active area. The transparent cover plate is arranged on the touch control film. The transparent optical cement is arranged between the touch control film and the transparent cover plate. The second driving electrode strips are driven to obtain the signal data of the second receiving electrode strips, so as to perform the curing rate detection operation on the transparent optical adhesive.
In some embodiments, the electrode pattern of the second driving electrode stripes is the same as the electrode pattern of the first driving electrode stripes, and the electrode pattern of the second receiving electrode stripes is the same as the electrode pattern of the first receiving electrode stripes.
In some embodiments, the second driving electrode stripes and the first driving electrode stripes form an array structure together, and the second receiving electrode stripes and the first receiving electrode stripes form another array structure together.
In some embodiments, the second driving electrode stripes and the second receiving electrode stripes form an extended region, the extended region surrounds the active region, and the width of the extended region is the length of one of the second driving electrode stripes or the second receiving electrode stripes.
In some embodiments, the second driving electrode stripes are not connected to the first driving electrode stripes, and the second receiving electrode stripes are not connected to the first receiving electrode stripes.
In some embodiments, the number of the second driving electrode stripes is 4, and the number of the second receiving electrode stripes is 4. The second driving electrode strips and the second receiving electrode strips are configured into a unit in a one-to-one mode, and the units are respectively arranged at four corners of the substrate.
In some embodiments, each second driving electrode strip comprises two driving electrodes, each second receiving electrode strip comprises two receiving electrodes, and the driving electrodes and the receiving electrodes are staggered with each other.
In some embodiments, the first driving electrode stripes, the first receiving electrode stripes, the second driving electrode stripes, and the second driving electrode stripes are embedded in the transparent optical adhesive.
In some embodiments, the touch device further comprises ink. The printing ink is arranged between the transparent optical cement and the transparent cover plate and is arranged around the active area, and the second driving electrode strips and the second receiving electrode strips are arranged below the printing ink.
According to the above object of the present disclosure, a method for detecting a curing rate of a transparent optical adhesive in a touch device is provided. In the method, a correspondence between the curing rate and the signal is provided. Driving the second driving electrode strips of the touch device to obtain the signal data of the second receiving electrode strips. Obtaining the solidification rate data corresponding to the signal data according to the corresponding relationship between the solidification rate and the signal.
In summary, in the touch device and the method for detecting the curing rate thereof according to the embodiments of the disclosure, the second driving electrode strips and the second receiving electrode strips are disposed outside the active area of the substrate for detecting the curing rate of the edge area. By driving the second driving electrode strips outside the active region, the signal data of the second receiving electrode strips can be obtained. Then, the corresponding relationship between the curing rate and the signal is used to find out the curing rate data corresponding to the signal data. Therefore, the curing rate of the transparent optical adhesive in the edge area of the substrate of the touch device can be obtained, and touch device products with poor curing rate can be screened out before shipping. In addition, by driving the first driving electrode bar in the active region, the signal data of the first receiving electrode bar can be obtained. Then, the corresponding relationship between the curing rate and the signal is used to find out the curing rate data corresponding to the signal data of the first receiving electrode strip and the signal data of the second receiving electrode strip, so as to establish the overall curing rate distribution of the transparent optical adhesive of the touch device.
In order to make the aforementioned and other features and advantages of the disclosure more comprehensible, embodiments accompanied with figures are described in detail below.
Drawings
Aspects of the present disclosure may be better understood from the following detailed description taken in conjunction with the accompanying drawings. It is noted that, in accordance with standard practice in the industry, various features are not drawn to scale. In fact, the dimensions of the various features may be arbitrarily increased or reduced for clarity of discussion.
Fig. 1 is a schematic partial cross-sectional view of a touch device according to an embodiment of the disclosure.
Fig. 2 is a schematic top view of a touch device according to an embodiment of the disclosure.
Fig. 3 is a schematic top view of another touch device according to an embodiment of the disclosure.
FIG. 4 is a flowchart illustrating a method for detecting a curing rate according to an embodiment of the disclosure.
Fig. 5 is a schematic diagram of a sample touch device according to an embodiment of the disclosure.
Reference numerals:
100,200 touch device 101,201 active area
102,202 ink zone 103 flaring zone
110 touch film 111 substrate
112,212,412 a first drive electrode strip 113,213,413 a first receive electrode strip
114,214 second drive electrode strips 115,215 second receive electrode strips
120 transparent cover plate 130 transparent optical cement
140 ink 301-303 step
400 sample C middle part
d1 width DE1, DE2 drive electrode
RE1, RE2, receiving electrode U, cell
W1, W2, a wire X, a first direction
Y is the second direction
Detailed Description
Embodiments of the present disclosure are discussed in detail below. It should be appreciated, however, that the embodiments provide many applicable concepts that can be embodied in a wide variety of specific contexts. The embodiments discussed and disclosed are illustrative only and are not intended to limit the scope of the present disclosure. Various features are disclosed in all of the embodiments of this disclosure, which can be implemented separately or in combination as desired. In addition, the terms "first", "second", "8230, etc. used herein do not particularly denote any order or sequence, but are merely used to distinguish elements or operations described by the same technical terms. Furthermore, the spatial relationship between two elements described in the present disclosure applies not only to the orientation shown in the drawings, but also to orientations not shown in the drawings, such as an inverted orientation. Furthermore, the terms "connected," "coupled," "electrically connected," and the like in the two components of the disclosure are not limited to direct connection, coupling, or electrical connection, but can also include indirect connection, coupling, or electrical connection as desired.
In the touch device, the driving electrode strips, the receiving electrode strips and the transparent optical cement form capacitors, and power lines of the capacitors pass through the transparent optical cement. The dielectric value of the transparent optical adhesive affects the capacitance of the capacitor. According to the formula of capacitance value, the dielectric value is proportional to the capacitance value. After experiments, the curing rate of the transparent optical cement influences the dielectric value of the transparent optical cement. When the curing rate of the transparent optical adhesive is higher, the dielectric value is larger, so that the capacitance of the capacitor formed by the driving electrode strips, the receiving electrode strips and the transparent optical adhesive is larger. The larger the capacitance value is, the larger the signal quantity, such as the charge quantity signal, obtained from the receiving electrode bar is. Therefore, the larger the curing rate of the transparent optical adhesive, the larger the signal amount obtained from the receiving electrode stripes. Therefore, the present disclosure provides a touch device and a method for detecting a curing rate thereof, which can detect the curing rate of a transparent optical adhesive in the touch device by establishing a relationship between a signal amount and the curing rate.
Fig. 1 is a schematic cross-sectional view of a touch device 100 according to an embodiment of the disclosure. Referring to fig. 1, a touch device 100 includes a touch film 110, a transparent cover 120, and a transparent optical adhesive 130. The transparent cover 120 is disposed on the touch film 110. The transparent optical adhesive 130 is disposed between the touch film 110 and the transparent cover 120. In application, the touch device 100 of the present embodiment further includes a display module to form a touch display device, and the display module can be disposed under the touch film 110.
Referring to fig. 1, the touch film 110 mainly includes a substrate 111, a first driving electrode strip 112 and a first receiving electrode strip 113, and a second driving electrode strip 114 and a second receiving electrode strip 115. The substrate 111 may be, for example, a glass substrate or a transparent substrate made of other materials. The substrate 111 may be a hard plate or a flexible film.
Fig. 2 is a schematic top view of a touch device 100 according to an embodiment of the disclosure. The first driving electrode stripes 112 and the first receiving electrode stripes 113 intersect each other and are disposed in the active region 101 of the substrate 111. Here, the active area 101 refers to a range in which the touch device 100 can respond to a user's operation on the touch film 110. In the present embodiment, the range covered by the first driving electrode stripes 112 and the first receiving electrode stripes 113 is the active region 101. In one embodiment, the active area 101 may be, for example, the same as a range of a visible area (view area) of a touch display device to which the touch device 100 is applied. The second driving electrode stripes 114 and the second receiving electrode stripes 115 are intersected with each other and disposed on the substrate 111 and outside the active region 101.
In the present embodiment, the first driving electrode stripes 112, the first receiving electrode stripes 113, the second driving electrode stripes 114, and the second receiving electrode stripes 115 are directly disposed on the substrate 111. In other embodiments, the first driving electrode stripes 112, the first receiving electrode stripes 113, the second driving electrode stripes 114, and the second receiving electrode stripes 115 may be disposed on a film, such as a polyethylene terephthalate (PET) film, and then the film is attached to the substrate 111. In addition, the first driving electrode stripes 112, the first receiving electrode stripes 113, the second driving electrode stripes 114, and the second receiving electrode stripes 115 may be of a single-layer structure or a double-layer structure, which is exemplified as a single-layer structure.
The first driving electrode stripes 112, the first receiving electrode stripes 113, the second driving electrode stripes 114, and the second receiving electrode stripes 115 may be made of Transparent Conductive Oxide (TCO) or other transparent conductive materials. The transparent conductive oxide is, for example, indium Tin Oxide (ITO). Other transparent conductive materials that can be used are, for example, silver (Ag) -based transparent materials, nanocarbon materials, or Indium Zinc Oxide (IZO).
In the present embodiment, as shown in fig. 1, the first driving electrode stripes 112, the first receiving electrode stripes 113, the second driving electrode stripes 114, and the second receiving electrode stripes 115 are embedded in the transparent optical glue 130. In other embodiments, the first driving electrode stripes 112, the first receiving electrode stripes 113, the second driving electrode stripes 114, and the second receiving electrode stripes 115 may only contact the transparent optical cement 130, and are not embedded in the transparent optical cement 130. In another embodiment, the first driving electrode stripes 112, the first receiving electrode stripes 113, the second driving electrode stripes 114, and the second receiving electrode stripes 115 may be spaced apart from the transparent optical glue 130, for example, by a protective layer. It should be noted that, in order to improve the quality and accuracy of the curing rate detection of the transparent optical adhesive 130, the closer the first driving electrode stripes 112, the first receiving electrode stripes 113, the second driving electrode stripes 114, and the second receiving electrode stripes 115 are to the transparent optical adhesive 130, the better.
The transparent cover 120 may be a Cover Glass (CG), which is located at the outermost layer of the touch device 100, i.e. the cover glass can be directly touched by a user. The transparent cover 120 may be printed with brand names, trademarks, or the like, or pattern decorations, and has a function of protecting the touch device 100. The transparent cover 120 may be made of tempered glass or optical-grade tempered glass. In addition, the transparent optical adhesive 130 may be a liquid transparent optical adhesive or other transparent optical adhesive that needs to be cured. The curing here includes, for example, thermal curing or photo curing.
In addition, in the embodiment, the touch device 100 further includes ink 140. The ink 140 is disposed between the transparent optical cement 130 and the transparent cover plate 120. The ink 140 may be made of a material that achieves protective, insulative, corrosion resistant, acid resistant, and/or light blocking effects. The ink 140 may be, for example, a black ink.
Referring to fig. 1 and 2, the area covered by the ink 140 is defined as an ink area (ink area) 102. The ink region 102 is disposed around the active region 101. In some embodiments, the ink region 102 and the active region 101 may slightly overlap or be slightly separated due to process errors or process requirements. The second driving electrode stripes 114 and the second receiving electrode stripes 115 are disposed in the ink region 102. In the present embodiment, as shown in fig. 1, the second driving electrode stripes 114 and the second receiving electrode stripes 115 are disposed under the ink 140.
Referring to fig. 2, in the present embodiment, each of the first driving electrode stripes 112 includes a plurality of connected electrodes DE1, and all of the first driving electrode stripes 112 are arranged along the first direction X. Each of the first receiving electrode bars 113 includes a plurality of connected electrodes RE1, and all of the first receiving electrode bars 113 are arranged in the second direction Y. The first direction X is, for example, a horizontal direction, and the second direction Y is, for example, a vertical direction. In other embodiments, the first driving electrode stripes and the first receiving electrode stripes may have opposite configurations. In the present embodiment, the arrangement of the first driving electrode stripes 112 and the first receiving electrode stripes 113 and the way of forming the capacitance thereof are implemented by using a projected capacitive touch (projected capacitive touch) technology. The present embodiment does not limit the electrode patterns of the first driving electrode stripes 112 and the first receiving electrode stripes 113. Here, the patterns of the electrodes DE1 and RE1 are illustrated as diamonds.
In the present embodiment, each of the second driving electrode stripes 114 includes a plurality of connected electrodes DE2, and all of the second driving electrode stripes 114 are arranged along the first direction X. In the present embodiment, as shown in fig. 2, the second driving electrode stripes 114 are respectively located at the left side, the right side, the upper side, and the lower side of the first driving electrode stripes 112, and the second driving electrode stripes 114 located at the upper side and the lower side of the first driving electrode stripes 112 are connected to the first driving electrode stripes 112. In the present embodiment, the second driving electrode stripes 114 and the first driving electrode stripes 112 form an array structure together. In the array structure, the first driving electrode stripes 112 and the second driving electrode stripes 114 together form a plurality of driving electrode stripes, and each driving electrode stripe includes the same number of electrodes.
In addition, each of the second receiving electrode bars 115 includes a plurality of connected electrodes RE2, and all of the second receiving electrode bars 115 are arranged in the second direction Y. In the present embodiment, the second receiving electrode bars 115 are respectively positioned at the left, right, upper, and lower sides of the first receiving electrode bars 113, and the second receiving electrode bars 115 positioned at the left and right sides of the first receiving electrode bars 113 are connected to the first receiving electrode bars 113. In the present embodiment, the second receiving electrode bars 115 form an array structure together with the first receiving electrode bars 113. In this array structure, the first receiving electrode stripes 113 and the second receiving electrode stripes 115 together form a plurality of receiving electrode stripes, and each receiving electrode stripe includes the same number of electrodes.
In other embodiments, the second driving electrode stripes 114 and the second receiving electrode stripes 115 may have opposite configurations.
With the above arrangement, the curing rate detection can be performed on the left, right, upper, and lower portions of the transparent optical adhesive corresponding to the active region 101. In other embodiments, the second driving electrode stripes 114 and the second receiving electrode stripes 115 may be located at least one of the left side, the right side, the upper side, and the lower side of the first driving electrode stripes 112 and the first receiving electrode stripes 113.
In addition, the electrode pattern of the second driving electrode stripes 114 may be the same as the electrode pattern of the first driving electrode stripes 112, and the electrode pattern of the second receiving electrode stripes 115 may be the same as the electrode pattern of the first receiving electrode stripes 113. Under such a configuration, in one example, the first driving electrode stripes 112 and the second driving electrode stripes 114 can be fabricated in the same process, and the first receiving electrode stripes 113 and the second receiving electrode stripes 115 can be fabricated in the same process. In other embodiments, the second driving electrode stripes 114 and the second receiving electrode stripes 115 may have different electrode patterns and different electrode sizes than the first driving electrode stripes 112 and the second receiving electrode stripes 113.
As shown in FIG. 2, the area covered by the second driving electrode stripes 114 and the second receiving electrode stripes 115 can be referred to as an extension region 103, and the extension region 103 surrounds the active region 101 by extending the periphery of the active region 101. In the present embodiment, the width d1 of the extension region 103 is the length of one electrode DE2 or RE2 in the second driving electrode stripe 114 or the second receiving electrode stripe 115. By limiting the extension region 103 to the length of one electrode DE2 or RE2, the curing rate of the transparent optical adhesive 130 in the extension region 103 can be detected with a minimum extension region 103.
It should be noted that, although the first driving electrode stripes 112, the first receiving electrode stripes 113, the second driving electrode stripes 114, and the second receiving electrode stripes 115 are designed and manufactured together in terms of electrode patterns and manufacturing processes in the present embodiment, the second driving electrode stripes 114 and the second receiving electrode stripes 115 located outside the active region 101 (e.g., inside the outer expanding region 103) can be made ineffective (dummy) by software in terms of touch control function.
Fig. 3 is a schematic top view of another touch device 200 according to an embodiment of the disclosure. In the touch device 200, the area covered by the first driving electrode stripes 212 and the first receiving electrode stripes 213 is the active area 201. The area covered by ink 240 is defined as ink zone 202. The second driving electrode stripes 214 and the second receiving electrode stripes 215 are disposed in the ink region 202. The first driving electrode stripes 212 and the first receiving electrode stripes 213 cross each other, and the second driving electrode stripes 214 and the second receiving electrode stripes 215 cross each other.
In the present embodiment, the second driving electrode stripes 214 are not connected to the first driving electrode stripes 212, and the second receiving electrode stripes 215 are not connected to the first receiving electrode stripes 213. In the present embodiment, the number of the second driving electrode stripes 214 is 4, and the number of the second receiving electrode stripes 215 is 4. The second driving electrode stripes 214 and the second receiving electrode stripes 215 are arranged in a one-to-one manner to form a unit U, and the units U are respectively disposed at four corners of the substrate.
In some embodiments, each second driving electrode stripe 214 includes two driving electrodes DE2, and each second receiving electrode stripe 215 includes two receiving electrodes RE2. In the same unit U, the driving electrodes DE2 and the receiving electrodes RE2 are staggered with each other in a square pattern, for example, in a clockwise direction or a counterclockwise direction. The touch device 200 may further include two wires W1 and W2. The wire W1 connects the second driving electrode stripes 214 of the four units U. The wire W2 is connected to the second receiving electrode bars 215 of the four units U. The wires W1 and W2 are insulated from each other. The curing rate of the transparent optical adhesive corresponding to the position of the unit U can be detected through the unit U. In other embodiments, the unit U may be disposed at any position where the curing rate needs to be known. In one embodiment, only one unit U may be disposed within the ink zone 202.
It should be noted that, in the embodiment, although the first driving electrode stripes 212, the first receiving electrode stripes 213, the second driving electrode stripes 214, and the second receiving electrode stripes 215 are designed and manufactured together in terms of electrode patterns and manufacturing processes, the second driving electrode stripes 214 and the second receiving electrode stripes 215 outside the active region 201 (e.g., inside the ink region 202) can be made ineffective (dummy) by software in terms of touch control function.
Fig. 4 is a flowchart illustrating a curing rate detection method according to an embodiment of the disclosure. Referring to fig. 4 in conjunction with fig. 1 and fig. 2, the curing rate detection method is described below by taking the touch device 100 as an example. The curing rate detecting method is to perform a curing rate detecting operation on the transparent optical adhesive 130 in the touch device 100.
When detecting the curing rate of the transparent optical adhesive 130, step 301 can be performed to provide the corresponding relationship between the curing rate of the transparent optical adhesive 130 and the signal data detected from the receiving electrode strips. In step 301, a sample of the touch device 100 can be obtained first. The sample may be, for example, a product of the same lot as the touch device 100. The sample may also be, for example, a product similar to the touch device 100, but the sample does not have the second driving electrode strips and the second receiving electrode strips. The pattern, size and configuration of the first driving electrode stripes and the second driving electrode stripes in the sample may be the same as those of the touch device 100, so as to improve the accuracy of the curing rate detection.
Fig. 5 is a schematic diagram of a sample 400 of a touch device 100 according to an embodiment of the disclosure. The sample 400 also includes a first driving electrode strip 412 and a first receiving electrode strip 413. After the sample 400 is prepared, the sample 400 is illuminated through a reticle to cure the clear optical glue within the sample 400. Here, the mask is configured such that a middle portion C of the specimen 400 is exposed, whereby the middle portion C can receive light, and the other portion can be shielded by the mask from light. After the light curing is completed, the first portion and the second portion of the transparent optical adhesive of the sample 400 are measured to obtain a first curing rate and a second curing rate corresponding to the first portion and the second portion, respectively. Here, the first portion is a portion inside the middle portion C, and the second portion is a portion outside the middle portion C. In an exemplary example, the curing rate of the first portion is, for example, 95%, and the curing rate of the second portion is, for example, 0%.
After the solidification rate measurement is completed, the first driving electrode strips 412 of the sample 400 are driven to obtain sample signal data of the first receiving electrode strips 413 of the sample 400. The sample signal data is obtained in a manner similar to mutual capacitance driving. In the driving method, the first driving electrode stripes 412 are sequentially driven, and signals of all the first receiving electrode stripes 413 are obtained while each of the first driving electrode stripes 412 is driven. The signal data obtained in this way is matrix signal data. For example, 160 grid points can be formed by intersecting 10 first driving electrode stripes 412 and 16 second receiving electrode stripes 413, and the sample signal data includes signal data of the 160 grid points.
The obtained sample signal data includes signal data corresponding to the first portion and the second portion. For example, the first portion corresponds to signal data falling within a range of 2.34-2.56, and the second portion corresponds to signal data falling within a range of 1.79-1.95. From the above, it can be seen that a lower curing rate corresponds to a smaller signal value, and a higher curing rate corresponds to a larger signal value. Therefore, the first curing rate, the second curing rate, and the sample signal data are used to establish the corresponding relationship between the curing rate and the signal.
After obtaining the corresponding relationship between the curing rate and the signal, step 302 may be performed to drive the second driving electrode strips 114 of the touch device 100 to obtain the signal data of the second receiving electrode strips 115. In the present embodiment, in terms of driving relationship, the second driving electrode stripes 114 are integrated with the first driving electrode stripes 112, and the second receiving electrode stripes 115 are integrated with the second receiving electrode stripes 113. Therefore, for the convenience of driving, the driving electrode strips formed by the second driving electrode strips 114 and the first driving electrode strips 112 are sequentially driven from left to right (or from right to left) according to the array structure formed by the second driving electrode strips 114 and the first driving electrode strips 112, and the signals of the receiving electrode strips formed by the second receiving electrode strips 115 and the first receiving electrode strips 113 are obtained while driving, so as to obtain the signal data.
After the signal data is obtained, step 303 may be performed to obtain the curing rate data corresponding to the signal data according to the corresponding relationship between the curing rate and the signal. In the use of the signal data, the corresponding curing rate data may be obtained using only the signal data corresponding to the second receiving electrode bar 115, or may be obtained using all the signal data. The curing rate data obtained by the latter is the overall curing rate data of the transparent optical adhesive 130 of the touch device 100, and the distribution of the curing rate of the transparent optical adhesive 130 of the touch device 100 can be seen.
The above-described curing rate detection method is performed based on the fact that the electrode patterns of the second driving electrode stripes 114 and the second receiving electrode stripes 115 are the same as the electrode patterns of the first driving electrode stripes 112 and the first receiving electrode stripes 113. If the electrode patterns are different, compensation can be performed by the internal calculation mechanism of Integrated Circuit (IC) to obtain the correct corresponding curing rate.
An embodiment of performing the curing rate detection operation by using the touch device 200 shown in FIG. 3 is described below. In this embodiment, the same principle as the curing rate detection operation of the above-described embodiment can be mostly used. However, the difference is that, in terms of driving relationship, the second driving electrode stripes 214 and the first driving electrode stripes 212 are not integrated, and the second receiving electrode stripes 215 and the second receiving electrode stripes 213 are not integrated. Therefore, in the present embodiment, the second driving electrode stripes 214 and the first driving electrode stripes 212 need to be driven separately.
In step 302 of FIG. 4, the second driving electrode bar 214 is driven via the conductive line W1, and the signal data of the second receiving electrode bar 215 is obtained via the conductive line W2. Then, in step 303, the curing rate data corresponding to the signal data is obtained according to the corresponding relationship between the curing rate and the signal. Thus, the curing rate data of the transparent optical adhesive in the ink area 202 corresponding to the four units U can be obtained.
As can be seen from the above description, in the touch device and the method for detecting the curing rate thereof according to the embodiments of the disclosure, the second driving electrode strips and the second receiving electrode strips are disposed outside the active area of the substrate for detecting the curing rate of the edge area. By driving the second driving electrode strips outside the active region, the signal data of the second receiving electrode strips can be obtained. Then, the corresponding relation between the solidification rate and the signal is used to find out the solidification rate data corresponding to the signal data. Therefore, it can be known whether the curing rate of the transparent optical adhesive in the edge area of the substrate of the touch device is too low, and the touch device product with poor curing rate can be screened before shipping. In addition, by driving the first driving electrode bar in the active region, the signal data of the first receiving electrode bar can be obtained. Then, the corresponding relationship between the curing rate and the signal is used to find out the curing rate data corresponding to the signal data of the first receiving electrode strip and the signal data of the second receiving electrode strip, so as to establish the overall curing rate distribution of the transparent optical adhesive of the touch device.
The foregoing outlines features of several embodiments so that those skilled in the art may better understand the aspects of the present disclosure. Those skilled in the art should appreciate that they may readily use the present disclosure as a basis for designing or modifying other processes and structures for carrying out the same purposes and/or achieving the same advantages of the embodiments introduced herein. It should also be understood by those skilled in the art that such equivalent constructions do not depart from the spirit and scope of the present disclosure, and that they may make various changes, substitutions and alterations herein without departing from the spirit and scope of the present disclosure.
Claims (6)
1. A touch device, comprising:
a touch film, comprising:
a substrate;
a plurality of first driving electrode strips and a plurality of first receiving electrode strips which are intersected with each other and arranged in an active area of the substrate; and
a plurality of second driving electrode strips and a plurality of second receiving electrode strips, which are intersected with each other and arranged on the substrate and outside the active region, wherein the second driving electrode strips and the first driving electrode strips form an array structure together, the second driving electrode strips are respectively arranged at the left side, the right side, the upper side and the lower side of the first driving electrode strips, the second receiving electrode strips and the first receiving electrode strips form another array structure together, and the second receiving electrode strips are respectively arranged at the left side, the right side, the upper side and the lower side of the first receiving electrode strips;
a transparent cover plate arranged on the touch control film; and
the transparent optical adhesive is arranged between the touch film and the transparent cover plate, and the first driving electrode strips, the first receiving electrode strips, the second driving electrode strips and the second driving electrode strips are embedded in the transparent optical adhesive;
wherein, the second driving electrode strips are driven to obtain a signal data of the second receiving electrode strips, so as to perform a curing rate detection operation on the transparent optical adhesive.
2. The touch device as recited in claim 1, wherein an electrode pattern of the second driving electrode strips is identical to an electrode pattern of the first driving electrode strips, and an electrode pattern of the second receiving electrode strips is identical to an electrode pattern of the first receiving electrode strips.
3. The touch device as recited in claim 1, wherein the second driving electrode strips and the second receiving electrode strips form an extended area surrounding the active area, and a width of the extended area is a length of one of the second driving electrode strips or the second receiving electrode strips.
4. The touch device as recited in claim 1, wherein the second driving electrode strips are not connected to the first driving electrode strips, and the second receiving electrode strips are not connected to the first receiving electrode strips.
5. The touch device of claim 1, further comprising:
and the printing ink is arranged between the transparent optical cement and the transparent cover plate and arranged around the active area, and the second driving electrode strips and the second receiving electrode strips are arranged below the printing ink.
6. A curing rate detection method, adapted to perform the curing rate detection operation on the transparent optical adhesive in the touch device by using the touch device as claimed in claim 1, wherein the curing rate detection method comprises:
providing a corresponding relationship between the curing rate and the signal;
driving the second driving electrode strips of the touch device to obtain the signal data of the second receiving electrode strips; and
obtaining a solidification rate data corresponding to the signal data according to the corresponding relationship between the solidification rate and the signal.
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| TWI734542B (en) | 2021-07-21 |
| CN111721815A (en) | 2020-09-29 |
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