CN111356973A - Capacitive touch screen - Google Patents
Capacitive touch screen Download PDFInfo
- Publication number
- CN111356973A CN111356973A CN201780096910.6A CN201780096910A CN111356973A CN 111356973 A CN111356973 A CN 111356973A CN 201780096910 A CN201780096910 A CN 201780096910A CN 111356973 A CN111356973 A CN 111356973A
- Authority
- CN
- China
- Prior art keywords
- touch
- conductive
- electrodes
- electrode
- touch screen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 63
- 230000005684 electric field Effects 0.000 claims description 4
- 230000001939 inductive effect Effects 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 37
- 239000003990 capacitor Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 239000000758 substrate Substances 0.000 description 6
- 230000006698 induction Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- UMVBXBACMIOFDO-UHFFFAOYSA-N [N].[Si] Chemical class [N].[Si] UMVBXBACMIOFDO-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- 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
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
Abstract
The embodiment of the invention discloses a capacitive touch screen, which comprises: a touch chip; the conducting layer comprises a conducting region and a wiring region, a plurality of separated conducting electrodes are arranged in the conducting region, a plurality of separated transmission lines are arranged in the wiring region, and each conducting electrode is electrically connected with the touch chip through the transmission line; an insulating layer on the conductive layer; the touch layer is positioned above the insulating layer and comprises a plurality of separated touch electrodes, the touch electrodes correspond to the conductive electrodes, and at least part of the touch electrodes extend to the upper part of the wiring area; when the capacitive touch screen is touched, the charge change on the touch electrode causes the charge change on the corresponding conductive electrode, and the touch chip acquires the charge change on the conductive electrode through the transmission line so as to judge the touch position. By adopting the invention, the touch experience of the user can be improved.
Description
The invention relates to the field of touch, in particular to a capacitive touch screen.
Referring to fig. 1, a conventional capacitive touch screen includes a touch chip 130, a plurality of strip-shaped touch electrodes 110, and a plurality of transmission lines 120, wherein the touch chip 130 is located at a lower end of the capacitive touch screen, the plurality of touch electrodes 110 are located at an upper side of the touch chip 130, the plurality of touch electrodes 110 are parallel to each other and extend along an X-axis direction, and left and right sides of each touch electrode 110 are electrically connected to the touch chip 130 through the transmission lines 120, respectively. Accordingly, the touch chip 130 sends an induction signal to the touch electrodes 110 through the transmission line 120, and the touch electrodes 110 form a first capacitor. The capacitive touch screen can detect sliding control and one-dimensional position. When the finger of the user touches the touch electrode 110, the finger of the user forms a second capacitance with the touch electrode 110, so that the charge on the touch electrode 110 changes, and the touch chip 130 detects the change, thereby obtaining the position or the motion of the finger of the user.
When the capacitive touch screen is used, since the left and right edges of the capacitive touch screen need to leave a space for the transmission line 120 to run, when a user touches the position of the transmission line 120, the touch electrode 110 cannot recognize the position, that is, the area where the transmission line 120 is located is a touch blind area, so that the user experience is poor.
Disclosure of Invention
The technical problem to be solved by the embodiments of the present invention is to provide a capacitive touch screen. The touch experience of the user is improved, and the touch blind area is reduced.
In order to solve the above technical problem, an embodiment of the present invention provides a capacitance detection touch screen, including:
a touch chip;
the conducting layer comprises a conducting region and a wiring region, a plurality of separated conducting electrodes are arranged in the conducting region, a plurality of separated transmission lines are arranged in the wiring region, and each conducting electrode is electrically connected with the touch chip through the transmission line;
an insulating layer on the conductive layer;
the touch layer is positioned above the insulating layer and comprises a plurality of separated touch electrodes, the touch electrodes correspond to the conductive electrodes, and at least part of the touch electrodes extend to the upper part of the wiring area; wherein the content of the first and second substances,
when the capacitive touch screen is touched, the charge change on the touch electrode causes the charge change on the corresponding conductive electrode, and the touch chip acquires the charge change on the conductive electrode through the transmission line so as to judge the touch position.
The embodiment of the invention has the following beneficial effects:
due to the fact that the touch electrodes extend to the wiring area, when a user finger touches a capacitive touch screen area corresponding to the wiring area, a third capacitance is formed between the user finger and the corresponding touch electrode, so that the charge amount induced on the corresponding touch electrode changes, the charge amount on the corresponding conductive electrode changes, the change is detected by the touch chip, and the touch chip can obtain a touch position through calculation. Therefore, even if the fingers of the user touch the capacitive touch screen area corresponding to the wiring area, the touch chip can also detect the touch position, so that the problem of a touch blind area in the background technology is solved, and the user experience is improved. The capacitive touch screen provided by the embodiment of the invention has the advantages of simple structure and lower cost.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a prior art capacitive touch screen;
FIG. 2 is a schematic view of a conductive layer according to a first embodiment of the present invention;
FIG. 3 is a schematic view of a touch layer according to a first embodiment of the present invention;
FIG. 4 is a schematic view of a capacitive touch screen according to a first embodiment of the present invention (with the insulating layer hidden);
FIG. 5 is a cross-sectional view of a capacitive touch screen in accordance with a first embodiment of the present invention;
FIG. 6 is a schematic diagram of a capacitive touch screen according to a first embodiment of the present invention when the capacitive touch screen is not touched;
FIG. 7 is a schematic diagram of a capacitive touch screen according to a first embodiment of the present invention when touched;
FIG. 8 is a schematic view of a conductive layer of a second embodiment of the present invention;
FIG. 9 is a schematic view of a capacitive touch screen according to a second embodiment of the present invention (with the insulating layer hidden);
reference numbers of the drawings:
110. 210, 310-touch electrodes; 211-a first touch electrode; 212-a second touch electrode; 213-third touch electrode; 120. 220, 320-transmission lines; 130. 230-a touch chip; 240. 340-a conductive electrode; 241-a first conductive electrode; 242-a second conductive electrode; 243-a third conductive electrode; 250-an insulating layer; 260. 360-a conductive layer; 270. 370-routing area; 280-a protective layer; 290-substrate base plate.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "comprising" and "having," and any variations thereof, as appearing in the specification, claims and drawings of this application, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus. Furthermore, the terms "first," "second," and "third," etc. are used to distinguish between different objects and are not used to describe a particular order.
First embodiment
Referring to fig. 2 to 7, the capacitive touch screen includes a touch chip 230, a conductive layer, an insulating layer 250, and a touch layer.
In this embodiment, the touch chip 230 may be configured to send out an induction signal for detecting a touch position, and also receive a signal of charge change and process the signal, so as to obtain a position where the charge change occurs, and further obtain a current touch position. In this embodiment, the touch chip 230 is located on the upper side or the lower side of the capacitive touch screen, and in fig. 2, is located on the lower side of the capacitive touch screen.
In this embodiment, referring to fig. 2, the conductive layer includes a conductive region 260 and a routing region 270, the routing region 270 is located outside the conductive region 260, for example, on the left side, the right side, the upper side (when the touch chip 230 is located on the left side or the right side), the lower side (when the touch chip 230 is located on the left side or the right side), and the like of the routing region 270, and in this embodiment, the routing region 270 is located on the right side of the conductive region 260. In this embodiment, the conductive area 260 includes a plurality of separated conductive electrodes 240, and the plurality of separated conductive electrodes 240 are parallel to each other and extend along the X-axis direction, that is, the conductive electrodes 240 all extend from the left side to the right side, and in this embodiment, the conductive electrodes 240 extend from the left end of the capacitive touch screen to a position away from the right end, that is, at a certain distance from the right end. Of course, the conductive electrode may also extend from the upper side to the lower side in other embodiments of the invention. In this embodiment, the conductive electrodes 240 are strip-shaped, the lengths of the plurality of conductive electrodes 240 are different, and the left ends of the plurality of conductive electrodes 240 are located on the same vertical line, but the right ends of the plurality of conductive electrodes are located on different vertical lines. Specifically, in the present embodiment, the right ends of the plurality of conductive electrodes 240 gradually contract inward, i.e., contract leftward, from top to bottom, i.e.: in the top-to-bottom sequence, the right end of the first conductive electrode 241 is located at the rightmost side, the right end of the second conductive electrode 242 is located at the second right side, the right end of the second conductive electrode 243 is located at the second right side, …, and the right end of the last conductive electrode 240 is located at the leftmost side with respect to the right ends of the other conductive electrodes 240. However, the present invention is not limited thereto, and in the embodiment of the present invention, the lengths of the plurality of conductive electrodes are different, and the left and right ends of the plurality of conductive electrodes gradually contract inwards from top to bottom, that is, gradually contract towards the middle. In other embodiments of the present invention, the lengths of the plurality of conductive electrodes are different, specifically, the right ends of the plurality of conductive electrodes are located on the same vertical line, and the left ends of the plurality of conductive electrodes are gradually retracted from top to bottom.
In the present embodiment, with continuing reference to fig. 2, the routing area 270 is located at the right end of the conductive area 260, specifically, the routing area 270 is an area that is left by the second conductive electrode 242 to the last conductive electrode 240 relative to the first conductive electrode 241, so that the boundary between the routing area 270 and the conductive area 260 is stepped (see the dashed line in fig. 2). In this embodiment, a plurality of separated transmission lines 220 are disposed in the routing area 270, the number of the transmission lines 220 is the same as the number of the conductive electrodes 240, and each conductive electrode 240 is electrically connected to one transmission line 220. Specifically, the lower end of the right side of the conductive electrode 240 is electrically connected to the transmission line 220, where the transmission line 220 is perpendicular to the conductive electrode 240 electrically connected thereto, and thus it can be seen that the right end of the conductive electrode 240 is retracted inward to free the right side area for routing the transmission line 220, so as to avoid the transmission line 220 and the conductive electrode 240 from interfering with each other. In the present embodiment, no transmission line 220 exists on the right side of the first conductive electrode 241 (the transmission line 220 electrically connected to the first conductive electrode 241 is on the lower side thereof), one transmission line 220 exists on the right side of the second conductive electrode 242, two transmission lines 220 exist on the right side of the third conductive electrode 243, …, and n-1 transmission lines 220 exist on the right side of the nth conductive electrode 240 (n is an integer greater than or equal to 2), …. In this embodiment, one end of the transmission line 220 away from the conductive electrode 240 is electrically connected to the touch chip 230, and in this embodiment, the lower end of the transmission line 220 is electrically connected to the touch chip 230.
In the present embodiment, referring to fig. 5, the insulating layer 250 is located on the conductive layer, and the insulating layer 250 covers the conductive electrode 240 and the transmission line 220.In this embodiment, the material of the insulating layer 250 is SiO2Nitrogen silicon compounds, and the like.
In the present embodiment, referring to fig. 2-4, the touch layer is located on the insulating layer 250, the touch layer includes a plurality of separated touch electrodes 210, and the touch electrodes 210 correspond to the conductive electrodes 240. In the present embodiment, the plurality of touch electrodes 210 are strip-shaped, the plurality of touch electrodes 210 are parallel to each other and extend along the X-axis direction, that is, the touch electrodes 210 all extend from the left end to the opposite end, that is, the right end, of the capacitive touch screen, the number of the touch electrodes 210 is the same as that of the conductive electrodes 240, and each touch electrode 210 is located above a corresponding conductive electrode 240 and is parallel to the conductive electrode 240. In addition, in other embodiments of the present invention, the conductive electrode may also extend from top to bottom. In the present embodiment, the touch electrodes 210 have the same size, specifically, the length and the width are the same. In this embodiment, the area of the touch electrode 210 is greater than or equal to the area of any one of the conductive electrodes 240. Specifically, the length of the plurality of touch electrodes 210 is equal to the length of the first conductive electrode 240, the width of the plurality of touch electrodes 210 is equal to the width of the first conductive electrode 240, that is, the area of the first conductive electrode 241 is the same as the area of any one touch electrode 210, and the area of the lower conductive electrode 240 is smaller than the area of any one touch electrode 210.
The touch electrode 210 of the touch layer is disposed in a floating manner with respect to the conductive electrode 240, that is, the touch electrode 210 is not electrically connected to the conductive electrode 240 or the touch chip 230, but is electrically insulated from the conductive electrode 240 and the touch chip 230. Since the touch electrode 210 is not connected to the conductive electrode 240 and the touch chip 230 through a conductive wire, no current flows through the touch electrode 210 itself, and induced charges are generated by inducing charges of the conductive electrode 240. The induced charges of the touch electrode 210 form an open electric field upward, and simultaneously form a closed electric field downward with the charges of the conductive electrode 240. Therefore, the touch electrode 210 substantially forms a self capacitance, not a mutual capacitance, by the conductive electrode 240.
In the present embodiment, referring to fig. 4, at least a portion of the touch electrode 210 extends from above the conductive area 260 to above the routing area 270. Specifically, in a top-down sequence, the first touch electrode 211 covers the first conductive electrode 241, the second touch electrode 212 covers the second conductive electrode 242 and extends to one transmission line 220 on the right side of the second conductive electrode 242, the third touch electrode 213 covers the third conductive electrode 243 and extends to two transmission lines 220 on the right side of the third conductive electrode 243, the fourth touch electrode 210 covers the fourth conductive electrode 240 and extends to three transmission lines 220 on the right side of the fourth conductive electrode 240, …, and the nth touch electrode 210 covers the nth conductive electrode 240 and extends to n-1 transmission lines 220 on the right side of the nth conductive electrode 240, …. In the present embodiment, the touch electrode 210 and the corresponding conductive electrode 240 form a first capacitor C1, the first capacitor C1 is a self-capacitor, the touch electrode 210 and the ground GND form a second capacitor C2, and the first capacitor C1 and the second capacitor C2 are connected in series (see fig. 6).
In this embodiment, referring to fig. 4 and fig. 6, when the touch chip 230 sends an induction signal to the conductive electrode 240, the induction signal is a voltage signal or a current signal, and at this time, the conductive electrode 240 is fully charged with, for example, negative charges, and due to the capacitive coupling principle, the corresponding touch electrode 210 is fully charged with positive charges, and since the whole touch electrode 210 is an equipotential body, the portion of the corresponding touch electrode 210 on the transmission line 220 is also fully charged with positive charges. Referring to fig. 7, when a user finger touches the capacitive touch screen, the user finger and the touch electrode 210 form a third capacitor C3, so that the charge amount of the positive charges on the touch electrode 210 changes, and further the charge amount on the corresponding conductive electrode 240 changes, at this time, the touch chip 230 can detect a current through the transmission line 220, the touch chip 230 can obtain which conductive electrode 240 or which conductive electrodes 240 change according to the current, when a current exists on the transmission line 220 corresponding to one conductive electrode 240, it is a one-dimensional touch, when a current exists on the transmission line 220 corresponding to a plurality of conductive electrodes 240, it is a sliding control, and the user finger slides from an area of one touch electrode 210 to another area or areas of a plurality of touch.
Therefore, in the present embodiment, since the touch electrodes 210 extend to the routing area 270, when a user finger touches a capacitive touch screen area corresponding to the routing area 270, a third capacitance C3 appears between the user finger and the corresponding touch electrode 210, which causes a change in charge on the corresponding touch electrode 210, and further causes a change in charge on the corresponding conductive electrode 240, and the change is detected by the touch chip 230 in a current manner, so that the touch chip 230 can obtain a touch position through calculation. Therefore, even if a finger of a user touches a capacitive touch screen area corresponding to the routing area 270, the touch chip 230 can also detect a touch position, so that the problem of a touch blind area in the background technology is solved, and the user experience is improved. The capacitive touch screen provided by the embodiment of the invention has the advantages of simple structure and lower cost.
In this embodiment, the sensing signal sent by the touch chip 230 to the conductive electrode 240 through the transmission line 220 is an alternating current signal, so that the polarity of the charge on the conductive electrode 240 changes periodically, for example, the polarity of the charge on the conductive electrode 240 changes periodically in a certain time period and the polarity of the charge on the conductive electrode 240 changes periodically in the following time period.
In the present embodiment, in order to make the first capacitance more sensitive, the insulating layer 250 between the conductive electrode 240 and the touch electrode 210 cannot be too thick; also, the insulating layer 250 cannot be too thin in order to prevent the first capacitor from being easily broken down. In the present embodiment, the thickness of the insulating layer 250 is in the range of 0.01mm to 1.0mm, for example, 0.01mm, 0.05mm, 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, and the like.
In addition, in this embodiment, the capacitive touch screen further includes a protection layer 280 and a substrate 290, the protection layer 280 is located on the touch electrode 210, and the substrate 290 is located below the conductive layer. Actually, if looking from the top down, please refer to fig. 5, it can also be seen that the touch electrode 210 is located on the protection layer 280, the insulation layer 250 is located on the touch electrode 210, the conductive layer is located on the insulation layer 250, and the substrate 290 is located on the conductive layer. Thus, when a user touches the capacitive touch screen, the user actually touches the protective layer 280.
In addition, in this embodiment, the touch chip 230 is actually located on the substrate 290. However, the present invention is not limited thereto, and in other embodiments of the present invention, the capacitive touch screen further includes a flexible circuit board, the flexible circuit board is bonded (bound) to the substrate, and the touch chip is located on the flexible circuit board.
Second embodiment
Fig. 9 is a schematic diagram of a capacitive touch screen according to a second embodiment of the present invention, and the schematic diagram of fig. 9 is similar to the schematic diagram of fig. 4, so that like reference numerals represent like components. The main difference between this embodiment and the second embodiment is the connection of the transmission line to the conductive electrode.
Referring to fig. 8 and 9, in the present embodiment, the conductive layer includes a conductive area 360 and a routing area 370, and the routing area 370 is located on two opposite sides of the conductive area 360. Specifically, a plurality of separated conductive electrodes 340 are disposed in the conductive area 360, and the conductive electrodes 340 are in a shape of a long strip and extend from the left side to the right side. In the present embodiment, the conductive electrodes 340 have the same area, that is, the length and width thereof are the same. In this embodiment, the routing areas 370 are located on the left side and the right side of the conductive area 260, that is, two routing areas 370 are provided, wherein a plurality of transmission lines 320 are disposed in the routing area 370 on the left side, the number of the transmission lines 320 disposed in the routing area 370 on the left side is equal to the number of the conductive electrodes 340, one end of each transmission line 320 is electrically connected to the corresponding conductive electrode 340, and the other end is electrically connected to the touch chip 230; similarly, the same number of transmission lines 320 as that in the left routing area 370 are disposed in the right routing area 370, one end of each transmission line in the right routing area 370 is electrically connected to the corresponding conductive electrode 340, and the other end is electrically connected to the touch chip 230. That is, the left and right ends of the same conductive electrode 340 are electrically connected to the touch chip 230 through a transmission line 320. Therefore, the touch chip 230 is sensitive to receive the current signal and transmit the sensing signal.
In this embodiment, the touch layer includes a plurality of separated touch electrodes 310, the touch electrodes 310 extend from the left side to the right side, the number of the touch electrodes 310 is the same as that of the conductive electrodes 340, and one touch electrode 310 is disposed corresponding to one conductive electrode 340. In the present embodiment, the areas of the touch electrodes 310 are the same, that is, the lengths and widths of the touch electrodes 310 are the same. In this embodiment, the area of any one of the touch electrodes 310 is larger than the area of any one of the conductive electrodes 340, specifically, the width of any one of the touch electrodes 310 is larger than or equal to the width of any one of the conductive electrodes 340, and the length of any one of the touch electrodes 310 is larger than the length of any one of the conductive electrodes 340. Specifically, any one of the touch electrodes 310 covers the corresponding conductive electrode 340 and covers the transmission line 320 connected to the corresponding conductive electrode 340, specifically, the touch electrode 310 extends to the left above the left routing area 370, covers the left transmission line 320 connected to the corresponding conductive electrode 340, extends to the right above the right routing area 370, and covers the right transmission line 320 connected to the corresponding conductive electrode 340.
In the present embodiment, referring to the left routing area 370, the transmission line 320 includes a first segment close to the conductive electrode 340 electrically connected thereto and a second segment far from the conductive electrode 340 electrically connected thereto, and the touch electrode 310 corresponding to the conductive electrode 340 covers the conductive electrode 340 and the first segment of the transmission line 320 electrically connected to the conductive electrode 340. In this embodiment, the first segment is disposed horizontally, the second segment is disposed vertically, and the second segment of the transmission line 320 is covered by the touch electrode 310 corresponding to the lower conductive electrode 340. Similarly, in the right routing area 370, the transmission line 320 also includes a first segment close to the conductive electrode 340 electrically connected thereto and a second segment far from the conductive electrode 340 electrically connected thereto, the touch electrode 310 corresponding to the conductive electrode 340 covers the conductive electrode 340 and the first segment of the transmission line 320 electrically connected to the conductive electrode 340, and the second segment of the transmission line 320 is covered by the touch electrode 310 corresponding to the underlying conductive electrode 340.
It should be noted that, in the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other. For the device embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, refer to the partial description of the method embodiment.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.
Claims (18)
- A capacitive touch screen, comprising:a touch chip;the conducting layer comprises a conducting region and a wiring region, a plurality of separated conducting electrodes are arranged in the conducting region, a plurality of separated transmission lines are arranged in the wiring region, and each conducting electrode is electrically connected with the touch chip through the transmission line;an insulating layer on the conductive layer;the touch layer is positioned above the insulating layer and comprises a plurality of separated touch electrodes, the touch electrodes correspond to the conductive electrodes, and at least part of the touch electrodes extend to the upper part of the wiring area; wherein the content of the first and second substances,when the capacitive touch screen is touched, the charge change on the touch electrode causes the charge change on the corresponding conductive electrode, and the touch chip acquires the charge change on the conductive electrode through the transmission line so as to judge the touch position.
- The capacitive touch screen of claim 1, wherein the touch electrodes form an open electric field upward and the touch electrodes form a closed electric field downward with the conductive electrodes.
- The capacitive touch screen of claim 1, wherein the touch electrodes are not electrically connected to the conductive electrodes and the touch chip.
- The capacitive touch screen of claim 1, wherein the charge on the touch electrode is an induced charge generated by inducing a charge on the conductive electrode.
- The capacitive touch screen of claim 1, wherein the first ends of the plurality of conductive electrodes are sequentially and inwardly tapered, and the routing area is located at a position where the conductive electrodes are tapered.
- The capacitive touch screen of claim 5, wherein edge lines of the routing area adjacent to the conductive area are stepped.
- The capacitive touch screen of claim 1, wherein the insulating layer has a thickness in the range of 0.01mm to 1.0 mm.
- The capacitive touch screen of claim 1, wherein one end of the transmission line is electrically connected to one side of the conductive electrode close to the touch chip.
- The capacitive touch screen of claim 1, wherein the touch electrodes cover a corresponding one of the conductive electrodes and the transmission line connected to the corresponding one of the conductive electrodes.
- The capacitive touch screen of claim 9, wherein the transmission line to which the respective one of the conductive electrodes is connected is perpendicular to the respective one of the conductive electrodes.
- The capacitive touch screen of claim 9, wherein the transmission line connected to the corresponding one of the conductive electrodes includes a first segment near the corresponding one of the conductive electrodes and a second segment away from the corresponding one of the conductive electrodes, and each of the touch electrodes covers the corresponding one of the conductive electrodes and the first segment of the transmission line connected to the corresponding one of the conductive electrodes.
- The capacitive touch screen of claim 11, wherein a second segment of the transmission line connected to the corresponding one of the conductive electrodes is covered by another touch electrode.
- The capacitive touch screen of claim 1, wherein a second capacitance is formed between the touch electrode and ground, a first capacitance is formed between the touch electrode and the conductive electrode, and the first capacitance is connected in series with the second capacitance.
- The capacitive touch screen of claim 1, wherein the routing areas are located on opposite sides of the conductive area, two ends of each conductive electrode are electrically connected to transmission lines, and the two transmission lines are electrically connected to the touch chip.
- The capacitive touch screen of claim 1, wherein the area of any one of the conductive electrodes is less than or equal to the area of any one of the touch electrodes.
- The capacitive touch screen of claim 1, wherein the polarity of the charge on the conductive electrode varies periodically.
- The capacitive touch screen of claim 4, wherein when the touch electrode is touched, the touch causes a change in an amount of induced charge originally on the touch electrode, and the change in the amount of induced charge on the touch electrode causes a change in charge on the conductive electrode, thereby determining the position of the touched touch electrode.
- The capacitive touch screen of claim 1, wherein the touch electrodes extend from one end of the capacitive touch screen to an opposite end, and the conductive electrodes extend from one end of the capacitive touch screen to a location spaced from the opposite end.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2017/113271 WO2019104458A1 (en) | 2017-11-28 | 2017-11-28 | Capacitive touch screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111356973A true CN111356973A (en) | 2020-06-30 |
Family
ID=66663711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780096910.6A Pending CN111356973A (en) | 2017-11-28 | 2017-11-28 | Capacitive touch screen |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111356973A (en) |
| WO (1) | WO2019104458A1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5432671A (en) * | 1990-02-19 | 1995-07-11 | Mors Composants | Device forming tactile screen of the capacitive type |
| CN105117081A (en) * | 2015-08-14 | 2015-12-02 | 京东方科技集团股份有限公司 | Touch substrate, manufacturing method therefor and touch display apparatus |
| CN106325622A (en) * | 2015-06-26 | 2017-01-11 | 小米科技有限责任公司 | Self-capacitive pressure touch device and terminal equipment |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5345336B2 (en) * | 2008-04-15 | 2013-11-20 | 株式会社ジャパンディスプレイ | Input device and display device including the same |
| KR102076690B1 (en) * | 2013-04-19 | 2020-02-13 | 삼성디스플레이 주식회사 | Display apparatus |
-
2017
- 2017-11-28 CN CN201780096910.6A patent/CN111356973A/en active Pending
- 2017-11-28 WO PCT/CN2017/113271 patent/WO2019104458A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5432671A (en) * | 1990-02-19 | 1995-07-11 | Mors Composants | Device forming tactile screen of the capacitive type |
| CN106325622A (en) * | 2015-06-26 | 2017-01-11 | 小米科技有限责任公司 | Self-capacitive pressure touch device and terminal equipment |
| CN105117081A (en) * | 2015-08-14 | 2015-12-02 | 京东方科技集团股份有限公司 | Touch substrate, manufacturing method therefor and touch display apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019104458A1 (en) | 2019-06-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10067615B2 (en) | Electrostatic capacitive touch-sensitive panel improving touch accuracy of edge regions | |
| US8988383B2 (en) | Electrostatic capacitive type touch screen panel | |
| US8970523B2 (en) | Two-dimensional capacitive touch panel with single sensor layer | |
| US10394404B2 (en) | Touch display panel | |
| KR101658139B1 (en) | Touch Panel | |
| CN102385462B (en) | Touch panel | |
| US20140192027A1 (en) | Tail Effect Correction for SLIM Pattern Touch Panels | |
| TWI543053B (en) | Touch control device | |
| US20110187676A1 (en) | Capacitive touch sensor, touch detection device and touch terminal | |
| CN104063100B (en) | Capacitive touch plate | |
| US10248265B2 (en) | Touch detecting panel | |
| TWI515665B (en) | Finger-swiping biometric recognition apparatus | |
| CN106484188B (en) | Touch display panel and pressure detection method | |
| US20130241851A1 (en) | Electrode unit with perimeter-lengthened touch-sensing pattern for touch-sensing element located at fringes of touch panel | |
| CN106169059A (en) | Biometric identification device with reflection shielding electrode and detection control method of biometric identification device | |
| US9281815B2 (en) | Electrode unit with perimeter-lengthened touch-sensing pattern for touch-sensing element located at fringes of touch panel | |
| CN107735757B (en) | Electrostatic capacitance type input device | |
| KR101956139B1 (en) | Touch panel | |
| CN108513653B (en) | Touch screen and terminal equipment with same | |
| CN111356973A (en) | Capacitive touch screen | |
| CN106843571A (en) | Touch-control sensing component | |
| CN203941518U (en) | Circuit structure of sensing layer | |
| TW201241708A (en) | Capacitance sensor structure | |
| KR20190105292A (en) | Multiple input device | |
| CN109766033B (en) | Touch control display panel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200630 |
|
| WD01 | Invention patent application deemed withdrawn after publication |