CN109857273B - Touch control device - Google Patents
Touch control device Download PDFInfo
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- CN109857273B CN109857273B CN201811588442.7A CN201811588442A CN109857273B CN 109857273 B CN109857273 B CN 109857273B CN 201811588442 A CN201811588442 A CN 201811588442A CN 109857273 B CN109857273 B CN 109857273B
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- 239000000758 substrate Substances 0.000 description 9
- 230000000007 visual effect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000010408 film Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- 230000005684 electric field Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000005530 etching Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
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Abstract
A touch device comprises a plurality of touch scanning elements, a plurality of touch signal lines, a plurality of touch switch sets and a plurality of touch electrodes. The touch signal lines and the touch scanning elements are arranged in a staggered manner. The touch switch group is electrically connected with the touch scanning element and the touch signal line. Each touch switch group comprises a plurality of touch switches. Each touch switch is provided with a first end and a control end. The plurality of touch electrodes are separated from each other. Each touch electrode is electrically connected with at least one touch switch group. The first ends of the touch switches of each touch switch set are electrically connected to the same touch electrode, and the control ends of the touch switches of each touch switch set are electrically connected to the same touch scanning element.
Description
Technical Field
The present invention relates to an electronic device, and more particularly, to a touch device.
Background
The touch devices are classified into an out-cell (out-cell), an on-cell (on-cell), and an in-cell (in-cell) according to the position of the touch portion. In particular, the embedded touch device has the advantage of thin thickness, and is widely used in high-end electronic products.
The display portion of the in-cell touch device may include a plurality of common electrodes. The plurality of common electrodes may be divided into a plurality of groups. The plurality of common electrodes of each group are connected to each other. The plurality of groups of common electrodes can be used as a plurality of touch electrodes in the touch sensing period. Taking a self-contained embedded touch device as an example, generally speaking, a plurality of touch electrodes are electrically connected to a plurality of pins of an integrated circuit (or chip) through a plurality of touch signal lines, respectively. When the number of touch electrodes increases, the number of pins of the integrated circuit also increases, which is not favorable for manufacturing cost and/or bonding yield. Therefore, some manufacturers have provided a plurality of touch switches (e.g., thin film transistors) electrically connected to the plurality of touch electrodes in the in-cell touch device, thereby reducing the number of pins required for the integrated circuit. However, in order to make the touch electrode charged well by the touch switch, the touch switch needs to have a certain size, which is easily perceived by the user, and thus the visual effect of the in-cell touch device is not good.
Disclosure of Invention
The invention provides a touch device with good performance.
The touch device comprises a plurality of touch scanning elements, a plurality of touch signal lines, a plurality of touch switch sets and a plurality of touch electrodes. The touch signal lines and the touch scanning elements are arranged in a staggered manner. The touch switch group is electrically connected with the touch scanning element and the touch signal line. Each touch switch group comprises a plurality of touch switches. Each touch switch has a first end and a control end. The plurality of touch electrodes are separated from each other. Each touch electrode is electrically connected with at least one touch switch group. The first ends of the touch switches of each touch switch set are electrically connected to the same touch electrode, and the control ends of the touch switches of each touch switch set are electrically connected to the same touch scanning element.
In view of the above, in an embodiment of the invention, the first ends of the touch switches of each touch switch set are electrically connected to the same touch electrode, and the control ends of the touch switches of each touch switch set are electrically connected to the same touch scanning element. That is, the touch switches of the same touch switch group are connected in parallel. Therefore, even if the area of a single touch switch is designed to be small and the single touch switch has high impedance based on the consideration of visual effect, the equivalent impedance of the touch switch set is small and falls within an acceptable range by connecting a plurality of high-impedance touch switches in parallel to form a touch switch set, so that the touch switch set can well charge the touch electrode within a certain time. Therefore, the charging of the touch electrode is good, and the problem of visual effect caused by the oversize of a single touch switch in the prior art can be solved.
The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto.
Drawings
Fig. 1 is a schematic top view of a touch device according to a first embodiment of the invention.
Fig. 2 is an enlarged schematic view of a portion R1 of the touch device of fig. 1.
Fig. 3 is a partially enlarged schematic view of a touch device 10' according to an embodiment of the invention.
Fig. 4 is a schematic top view of a touch device according to a second embodiment of the invention.
Fig. 5 is a schematic top view of a touch device according to a third embodiment of the invention.
Fig. 6 is a schematic top view of a touch device according to a fourth embodiment of the invention.
FIG. 7 shows the pulse signal Tx input to the (4x +1) th touch scan device 210 by the integrated scan driving circuit 400 shown in FIG. 6(4x+1)The pulse signal Tx input to the (4x +2) th touch scan device 210(4x+2)The pulse signal Tx input to the (4x +3) th touch scan device 210(4x+3)And the pulse signal Tx input to the (4x +4) th touch scan device 210(4x+4)。
Fig. 8 is a schematic top view of a touch device according to a fifth embodiment of the invention.
FIG. 9 shows the pulse signal Tx input to the (3x +1) th touch scan device 210 by the integrated scan driving circuit 400D of FIG. 8(3x+1)The pulse signal Tx input to the (3x +2) th touch scan device 210(3x+2)And the pulse signal Tx input to the (3x +3) th touch scan device 210(3x+3)。
FIG. 10 is a schematic top view of a touch device according to a sixth embodiment of the present invention
Fig. 11 is an enlarged schematic view of a portion R2 of the touch device of fig. 10.
FIG. 12 shows the pulse signal Tx inputted to the 1 st touch scan device 210 by the integrated scan driving circuit 400E of FIG. 101The pulse signal Tx input to the 2 nd touch scan device 2102The pulse signal Tx input to the 3 rd touch scan device 2103Pulse signal Tx to the m-th touch scan device 210m。
Wherein, the reference numbers:
1: substrate board
10. 10', 10A to 10E: touch control device
10 a: pixel region
100: display part
110: pixel structure
112: pixel electrode
112 a: gap
114: common electrode
200: touch control part
210: touch scanning element
220. 220-1, 220-2: touch control switch group
230. 230-1, 230-2: touch electrode
240: first connecting wire
250: second connecting line
300: integrated circuit with a plurality of transistors
310. 320, 330, 340: pin
400. 400D, 400E: integrated scanning drive circuit
CL: common potential line
DLp: pixel signal line
GLp: pixel scanning line
GLt: touch control scanning line
GLta: head end
GLtb: end tip
ML 1: a first selection line
ML 2: second selection line
ML 3: third selection line
PL: peripheral wiring
R1, R2: local part
S1-S4: touch sensing area
Tp: pixel switch
Tt: touch switch
Tt-1: first end
Tt-2: second end
Tt-3: control terminal
TL: touch signal line
Tx(4x+1)、Tx(4x+2)、Tx(4x+3)、Tx(4x+4)、Tx(3x+1)、Tx(3x+2)、Tx(3x+3)、Tx1、Tx2、Tx3、Txm: pulse signal
t 1: a first transistor
t 2: second transistor
t 3: a third transistor
x, y: direction of rotation
Detailed Description
The invention will be described in detail with reference to the following drawings, which are provided for illustration purposes and the like:
reference will now be made in detail to exemplary embodiments of the invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers are used in the drawings and the description to refer to the same or like parts.
It will be understood that when an element such as a layer, film, region or substrate is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intervening elements present. As used herein, "connected" may refer to physical and/or electrical connections. Further, "electrically connected" or "coupled" may mean that there are additional elements between the elements.
As used herein, "about", "approximately", or "substantially" includes the stated value and the average value within an acceptable range of deviation of the specified value as determined by one of ordinary skill in the art, taking into account the measurement in question and the specified amount of error associated with the measurement (i.e., the limitations of the measurement system). For example, "about" may mean within one or more standard deviations of the stated value, or within ± 30%, ± 20%, ± 10%, ± 5%. Further, as used herein, "about", "approximately", or "substantially" may be selected with respect to optical properties, etching properties, or other properties, with a more acceptable range of deviation or standard deviation, and not one standard deviation may apply to all properties.
Unless defined otherwise, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the present invention and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Fig. 1 is a schematic top view of a touch device according to a first embodiment of the invention. Fig. 2 is an enlarged schematic view of a portion R1 of the touch device of fig. 1. For clarity of expression, fig. 1 omits the pixel scan line GLp, the pixel signal line DLp, the pixel switch Tp, and the pixel electrode 112 of fig. 2.
Referring to fig. 1 and 2, in the present embodiment, the touch device 10 may be an in-cell (in-cell) touch display device. For example, in the present embodiment, the touch device 10 may include a display portion 100 and a touch portion 200, and the display portion 100 and the touch portion 200 may be selectively disposed on the same substrate 1. However, the invention is not limited thereto, and in another embodiment, the display portion 100 and the touch portion 200 may be disposed on two opposite substrates, or disposed inside and outside a cell (cell); that is, the touch device including the display portion 100 and the touch portion 200 may be another type of in-cell touch display device or an integrated (on-cell) touch display device. In addition, in yet another embodiment, the touch device includes the touch portion 200, but may not include the display portion 100; for example, the touch device may be an out-cell (out-cell) touch panel.
In the present embodiment, the display portion 100 includes a plurality of pixel scan lines GLp, a plurality of pixel signal lines DLp, and a plurality of pixel structures 110. The pixel scan lines GLp and the pixel signal lines DLp may belong to different film layers respectively and are disposed in a staggered manner. The plurality of pixel scan lines GLp and the plurality of pixel signal lines DLp define a plurality of pixel regions 10 a. For example, in the present embodiment, each pixel region 10a may be a region surrounded by two adjacent pixel scan lines GLp and two adjacent pixel signal lines DLp, but the invention is not limited thereto.
The pixel structures 110 are respectively disposed in the pixel regions 10 a. The pixel structure 110 is electrically connected to the pixel scan line GLp and the pixel signal line DLp. For example, in the present embodiment, each pixel structure 110 includes a pixel switch Tp and a pixel electrode 112 electrically connected to the pixel switch Tp. The pixel switch Tp is, for example, a thin film transistor having a first terminal (e.g., a drain), a control terminal (e.g., a gate), and a second terminal (e.g., a source). A first end of the pixel switch Tp is electrically connected to the pixel electrode 112. The control end of the pixel switch Tp is electrically connected to the pixel scan line GLp. The second end of the pixel switch Tp is electrically connected to the pixel signal line DLp.
In this embodiment, each pixel structure 110 may further include a common electrode 114 located in one pixel region 10 a. The electric field between the common electrode 114 and the pixel electrode 112 can drive a portion of a display medium layer (e.g., a liquid crystal layer; not shown) on each pixel region 10a, so that the touch device 10 can display a picture. For example, in the present embodiment, the common electrode 114 and the pixel electrode 112 can be selectively disposed on the same substrate 1, an insulating layer (not shown) is sandwiched between the common electrode 114 and the pixel electrode 112, the pixel electrode 112 has a plurality of gaps 112a, and the plurality of gaps 112a overlap the common electrode 114. The electric field between the edges of the gaps 112a of the pixel electrodes 112 and the common electrode 114 may drive a portion of the display medium layer over each pixel region 10 a. That is, in the present embodiment, the touch device 10 may be a Fringe-Field Switching (FFS) mode display panel. However, the invention is not limited thereto, and in other embodiments, the touch device may be a display panel with other suitable modes.
It is noted that, in the present embodiment, besides the common electrode 114 is used for display, a plurality of mutually adjacent and interconnected common electrodes 114 can also be used as a touch electrode 230 for sensing touch actions. For example, in the present embodiment, the common electrodes 114 are respectively located in the adjacent pixel regions 10a, the pixel regions 10a may form the touch sensing regions S1, S2, S3 or S4, and the common electrodes 114 located in the touch sensing regions S1, S2, S3 or S4 may be arranged in a 6 × 2 matrix and connected to each other to form one touch electrode 230. However, the present invention is not limited thereto, and in other embodiments, the number of the common electrodes 114 included in each touch electrode 230 (or the number of the pixel areas 10a covered by each touch electrode 230) may be determined according to the display resolution and the touch resolution required by the actual product, and the present invention is not limited thereto.
In the present embodiment, all the common electrodes 114 may be connected to form a plurality of touch electrodes 230, the touch electrodes 230 are separated from each other and may be arranged in a plurality of rows and a plurality of columns, the touch electrodes 230 in the same column are arranged along the direction x, and the touch electrodes 230 in the same row are arranged along the direction y.
The touch portion 200 of the touch device 10 includes a plurality of touch scan elements 210, a plurality of touch signal lines TL, a plurality of touch switch sets 220, and a plurality of touch electrodes 230. In this embodiment, the touch device 10 may further include an integrated circuit 300 (or chip), and the integrated circuit 300 has a plurality of pins 310 and 320. In the present embodiment, the integrated circuit 300 can be selectively connected to the substrate 1 by using a Chip On Glass (COG) bonding process. However, the invention is not limited thereto, and in other embodiments, the integrated circuit 300 may utilize other suitable processes, such as: a Chip On Film (COF) process, a Chip On Board (COB) process, a Tape Automated Bonding (TAB) process, etc. are connected to the substrate 1.
In the present embodiment, the touch scan device 210 is electrically connected to the pins 310 of the integrated circuit 300. For example, in the present embodiment, each touch scan element 210 may be a touch scan line GLt. The touch scan line GLt and the pixel scan line GLp may be substantially parallel. The plurality of touch scan lines GLt may be respectively electrically connected to the plurality of pins 310 of the integrated circuit 300 through the corresponding peripheral traces PL. However, the invention is not limited thereto, and in other embodiments, each touch scan element 210 may also include a plurality of touch scan lines GLt, which will be described in the following paragraphs with reference to other embodiments.
The touch signal lines TL and the touch scan elements 210 are disposed alternately. The touch signal lines TL may be electrically connected to the pins 320 of the integrated circuit 300, respectively. In the present embodiment, the touch signal lines TL extend in the direction y, and the touch scan element 210 extends in the direction x. For example, in the embodiment, the direction x and the direction y may be selectively perpendicular, but the invention is not limited thereto.
The touch switch sets 220 are electrically connected to the touch scan elements 210 and the touch signal lines TL. Each touch switch set 220 is electrically connected to a corresponding one of the touch scan devices 210 and a corresponding one of the touch signal lines TL. The signals received by the touch switch set 220 can determine whether the corresponding touch electrode 230 is enabled or not. Each touch electrode 230 is electrically connected to at least one touch switch set 220. For example, in the present embodiment, each touch electrode 230 can be selectively electrically connected to a plurality of touch switch sets 220 (e.g., two touch switch sets 220). However, the present invention is not limited thereto, and in other embodiments, each touch electrode 230 may also be electrically connected to one touch switch set 220, which will be described in the following paragraphs with reference to other illustrations.
Each touch switch set 220 includes a plurality of touch switches Tt. In the present embodiment, each touch switch Tt is, for example, a thin film transistor. Each touch switch Tt has a first terminal Tt-1 (e.g., a drain), a second terminal Tt-2 (e.g., a source), and a control terminal Tt-3 (e.g., a gate). The first ends Tt-1 of the touch switches Tt of the same touch switch set 220 are electrically connected to the same touch electrode 230, and the control ends Tt-3 of the touch switches Tt of the same touch switch set 220 are electrically connected to the same touch scan device 210. That is, the touch switches Tt of the same touch switch group 220 are connected in parallel. Therefore, even if the area of a single touch switch Tt is designed to be small and the single touch switch Tt has a high impedance based on the consideration of visual effect, the equivalent impedance of the touch switch set 220 is small and falls within an acceptable range by connecting a plurality of high-impedance touch switches Tt in parallel to form a touch switch set 220, so that the touch switch set 220 can well charge the touch electrode 230 within a certain time. Therefore, the charging of the touch electrode 230 is good, and the problem of visual effect caused by the oversize of the single touch switch in the prior art can be improved.
In the present embodiment, the second ends Tt-2 of the touch switches Tt of the at least one touch switch set 220 electrically connected to the same touch electrode 230 can be selectively electrically connected to the same touch signal line TL. For example, in the present embodiment, the touch switches Tt of the touch switch sets 220-1 and 220-2 electrically connected to the same touch electrode 230 may be arranged in a plurality of rows, and the touch switches Tt in each row are arranged along the extending direction y of the touch signal line TL. The touch portion 200 of the touch device 10 further includes a plurality of first connecting lines 240 extending in the direction y and a second connecting line 250 extending in the direction x, wherein the plurality of first connecting lines 240 are electrically connected to a plurality of second ends Tp-2 of the plurality of rows of touch switches Tt, respectively. The second connection lines 250 are interleaved with the plurality of first connection lines 240. The plurality of first connection lines 240 are connected to the second connection lines 250, and the second connection lines 250 are electrically connected to the touch signal lines TL. In short, in the embodiment, the second ends Tt-2 of the touch switches Tt electrically connected to the same touch electrode 230 can be electrically connected to the same touch signal line TL through the comb-shaped conductive element (i.e. the combination of the first connection lines 240 and the second connection line 250), but the invention is not limited thereto. In addition, in the present embodiment, the plurality of touch electrodes 230 may be arranged in a plurality of rows, the plurality of touch electrodes 230 in each row are arranged in the direction y, and the plurality of touch electrodes 230 in the same row may be selectively electrically connected to the same touch signal line TL, but the invention is not limited thereto.
In the present embodiment, to further improve the visual effect, the touch switches Tt of the same touch switch group 220 may be properly dispersed so as to be inconspicuous by the user. For example, the touch switches Tt of one touch switch set 220 electrically connected to the same touch electrode 230 may be respectively disposed in different pixel regions 10 a.
Specifically, the plurality of pixel regions 10a are arranged in a plurality of rows, and the plurality of pixel regions 10a in each row are arranged along the extending direction x of the touch scanning element 210; in the plurality of pixel regions 10a in each column, a touch switch Tt is disposed in the (1+ nx · px) th pixel region 10a, where px is a positive integer, nx is 0 and a positive integer from 1 to mx, and mx > 1. The plurality of pixel regions 10a are arranged in a plurality of rows, and the plurality of pixel regions 10a in each row are arranged along the extending direction y of the touch signal line TL; in the pixel regions 10a of each row, a touch switch Tt is disposed in the (1+ ny · py) th pixel region 10a, py is a positive integer, ny is 0 and a positive integer from 1 to my, and my > 1.
For example, in the present embodiment, px is 1. That is, in the plurality of pixel regions 10a in each column, the touch switch Tt is disposed in the (1+ nx · 1) th pixel region 10a, where nx is 0 and a positive integer from 1 to mx, and mx > 1. That is, in each of the plurality of pixel regions 10a of each column, one touch switch Tt is disposed in each of the pixel regions 10 a. For example, in the present embodiment, py may be 1. That is, in the plurality of pixel regions 10a in each row, the touch switch Tt is disposed in the (1+ ny · 1) th pixel region 10a, ny is a positive integer from 1 to my, and my > 1. That is, in the present embodiment, in the plurality of pixel regions 10a in each row, one touch switch Tt is disposed in each pixel region 10 a. In short, in the present embodiment, all the pixel regions 10a may be provided with the touch switch Tt. However, the invention is not limited thereto, and in other embodiments, a portion of the pixel area 10a may be provided with the touch switch Tt, and a portion of the pixel area 10a is not provided with the touch switch Tt, which is described below with reference to fig. 3.
Fig. 3 is a partially enlarged schematic view of a touch device 10' according to an embodiment of the invention. In the embodiment of fig. 3, px is, for example, 3, and py is, for example, 1. That is, in the pixel regions 10a of each column, a touch switch Tt is disposed in the (1+ nx · 3) th pixel region 10a, where nx is 0 and a positive integer from 1 to mx, and mx > 1; in the pixel regions 10a of each row, a touch switch Tt is arranged in the (1+ ny · 1) th pixel region 10a, ny is 0 and a positive integer from 1 to my, and my > 1. That is, in the embodiment of fig. 3, in the pixel regions 10a of each column, one touch switch Tt is disposed in every three pixel regions 10 a; in each of the plurality of pixel regions 10a of each row, each pixel region 10a is provided with a touch switch Tt. In the touch devices 10 and 10', the touch switches Tt are regularly arranged. However, the invention is not limited thereto, and in other embodiments, the touch switches Tt may be arranged irregularly (or randomly).
Fig. 4 is a schematic top view of a touch device according to a second embodiment of the invention. For clarity, fig. 4 omits the pixel scan line GLp, the pixel signal line DLp, the pixel switch Tp, and the pixel electrode 112. Referring to fig. 1 and 4, a touch device 10A of fig. 4 is similar to the touch device 10 of fig. 1, and the difference between the touch devices is: in the embodiment of fig. 4, the touch electrodes 230 in the same column are electrically connected to the touch signal lines TL; more specifically, a plurality of touch switches Tt electrically connected to the same touch electrode 230 are arranged in a plurality of rows, and the plurality of rows of touch switches Tt are electrically connected to the plurality of touch signal lines TL, respectively. The touch signal lines TL electrically connected to the touch electrodes 230 in the same row are respectively electrically connected to the pins 320 of the integrated circuit 300.
Fig. 5 is a schematic top view of a touch device according to a third embodiment of the invention. For clarity, fig. 5 omits the pixel scan line GLp, the pixel signal line DLp, the pixel switch Tp, and the pixel electrode 112. Referring to fig. 1 and 5, the touch device 10B of fig. 5 is similar to the touch device 10 of fig. 1, and the difference therebetween is: in the embodiment of fig. 5, each touch scan element 210 includes a plurality of adjacent touch scan lines GLt, wherein a plurality of head ends GLta of the plurality of touch scan lines GLt of the same touch scan element 210 are directly connected, and a plurality of tail ends GLtb of the plurality of touch scan lines GLt of the same touch scan element 210 are directly connected. In addition, in the embodiment of fig. 5, the touch switches Tt of one touch switch set 220 electrically connected to the same touch scanning device 210 and the same touch electrode 230 are arranged in multiple rows and multiple columns, unlike the touch switches Tt of one touch switch set 220 in fig. 1 that are arranged in one column.
Fig. 6 is a schematic top view of a touch device according to a fourth embodiment of the invention. For clarity, fig. 6 omits the aforementioned pixel scan line GLp, pixel signal line DLp, pixel switch Tp, and pixel electrode 112. Referring to fig. 5 and 6, the touch device 10C of fig. 6 is similar to the touch device 10B of fig. 5, and the difference therebetween is: the touch device 10C of fig. 6 further includes an integrated scan driving circuit 400. At least a part of the integrated scan driving circuit 400 may be fabricated on the same substrate 1 together with the pixel switch Tp and/or the touch switch Tt. In this embodiment, the integrated scan driving circuit 400 may include a multiplexer and a shift register. The touch scan devices 210 are electrically connected to the integrated scan driving circuit 400. The integrated scan driving circuit 400 is electrically connected to the pins 330 of the integrated circuit 300. In the embodiment, the integrated scan driving circuit 400 can be disposed on two sides of the integrated circuit 300, but the invention is not limited thereto, and in other embodiments, the integrated scan driving circuit 400 can be disposed at other suitable positions.
FIG. 7 shows the pulse signal Tx input to the (4x +1) th touch scan device 210 by the integrated scan driving circuit 400 of FIG. 6(4x+1)The pulse signal Tx input to the (4x +2) th touch scan element 210(4x+2)The pulse signal Tx input to the (4x +3) th touch scan element 210(4x+3)And the pulse signal Tx input to the (4x +4) th touch scan device 210(4x+4)Wherein x is 0, 1, 2, … [ (m/4) -1%]. For example, in the present embodiment, the touch device 10C includes 1 st to m-th touch scan elements 210 sequentially arranged along the direction y, wherein the pulse signal Tx is input to the 1 st, 5 th, 9 th, … th touch scan elements 210 in the first interval T1(4x+1)The pulse signal Tx is inputted to the 2 nd, 6 th, 10 th, … th touch scan device 210 in a second interval T2, which is subsequent to the first interval T1(4x+2)The pulse signal Tx is inputted to the 3 rd, 7 th, 11 th, … th touch scan device 210 in a third interval T3 following the second interval T2(4x+3)And the 4 th, 8 th, 12 th and … th touch scan devices 210 continue to the third interval TThe pulse signal Tx is input to the fourth interval T4 of 3(4x+4)。
Fig. 8 is a schematic top view of a touch device according to a fifth embodiment of the invention. For clarity, fig. 8 omits the aforementioned pixel scan line GLp, pixel signal line DLp, pixel switch Tp, and pixel electrode 112. Referring to fig. 5 and 8, the touch device 10D of fig. 8 is similar to the touch device 10B of fig. 5, and the difference therebetween is: the touch device 10D of fig. 8 further includes an integrated scan driving circuit 400D. At least a portion of the integrated scan driving circuit 400D may be fabricated on the same substrate 1 together with the pixel switch Tp and/or the touch switch Tt. In this embodiment, the integrated scan driving circuit 400D may include a multiplexer. The touch scan devices 210 are electrically connected to the multiplexer of the integrated scan driving circuit 400D. For example, the touch device 10D includes the 1 st to m-th scanning touch elements 210 sequentially arranged in the direction y. The multiplexer of the integrated scan driving circuit 400D includes a plurality of first transistors t1, a plurality of second transistors t2, a plurality of third transistors t3, a first selection line ML1, a second selection line ML2, a third selection line ML3, and a common potential line CL. First terminals of the first transistors t1 are electrically connected to the 1+3 · p-th scanning touch device 210, respectively, where p is 0 and a positive integer from 1 to [ (m/3) -1 ]. The second ends of the first transistors t1 are electrically connected to the common potential line CL. Control terminals of the first transistors t1 are electrically connected to the first selection line ML 1. First ends of the second transistors t2 are electrically connected to the 2+3 · p-th scanning touch device 210, respectively. Second ends of the second transistors t2 are electrically connected to the common potential line CL. Control terminals of the second transistors t2 are electrically connected to the second selection line ML 2. First ends of the third transistors t3 are electrically connected to the 3+3 · p-th scanning touch elements 210, respectively. Second ends of the third transistors t3 are electrically connected to the common potential line CL. A plurality of control terminals of the plurality of third transistors t3 are electrically connected to the third select line ML 3. The first selection line ML1, the second selection line ML2, and the third selection line ML3 are electrically connected to the plurality of pins 340 of the integrated circuit 300, respectively.
FIG. 9 shows the integrated scan driving circuit 400D of FIG. 8 input to the (3x +1) th onePulse signal Tx of touch scan device 210(3x+1)The pulse signal Tx input to the (3x +2) th touch scan device 210(3x+2)And the pulse signal Tx input to the (3x +3) th touch scan device 210(3x+3). For example, in the present embodiment, the touch device 10D includes 1 st to m-th touch scan elements 210 sequentially arranged along the direction y, wherein the pulse signal Tx is input to the 1 st, 4 th, 7 th, … th touch scan elements 210 in the first interval T1(3x+1)The pulse signal Tx is inputted to the 2 nd, 5 th, 8 th, … th touch scan device 210 in a second interval T2 following the first interval T1(3x+2)The pulse signal Tx is input to the 3 rd, 6 th, 9 th, … th touch scan elements 210 in a third interval T3 following the second interval T2(3x+3)。
Fig. 10 is a schematic top view of a touch device according to a sixth embodiment of the invention. Fig. 11 is an enlarged schematic view of a part R2 of the touch device of fig. 10. For clarity, fig. 10 omits the pixel scanning line GLp, the pixel signal line DLp, the pixel switch Tp, and the pixel electrode 112 of fig. 11.
Referring to fig. 6 and 10, the touch device 10E of fig. 10 is similar to the touch device 10C of fig. 6, and the difference therebetween is: in the embodiment of fig. 10, the same touch scan element 210 (e.g., formed by connecting 4 touch scan lines GLt) is electrically connected to the adjacent rows (e.g., 2 rows) of touch electrodes 230. The touch electrodes 230-1 and 230-2 electrically connected to the same touch scan device 210 and located in the same row are respectively electrically connected to different touch signal lines TL.
FIG. 12 shows the pulse signal Tx input to the 1 st touch scan device 210 by the integrated scan driving circuit 400E of FIG. 101The pulse signal Tx input to the 2 nd touch scan device 2102The pulse signal Tx input to the 3 rd touch scan device 2103The pulse signal Tx to the m-th touch scan device 210mWhere m is the total number of touch scan elements 210. For example, in the present embodiment, the touch device 10E includes 1 st to m touch scan elements 210 sequentially arranged along the direction y, wherein the pulse signal Tx is input to the 1 st touch scan element 210 at the interval T 12 nd touch scanThe element 210 receives the pulse signal Tx in the interval T2The pulse signal Tx is inputted to the 3 rd touch scan element 210 at the interval T3… the mth touch scan device 210 is inputted with the pulse signal Tx at the interval Tm. Pulse signal Tx1Pulse signal Tx2Pulse signal Tx3… and pulse signal TxmSynchronous and have the same waveform.
The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (11)
1. A touch device, comprising:
a plurality of touch scanning elements;
a plurality of touch signal lines arranged in a staggered manner with the touch scanning elements;
a plurality of touch switch sets electrically connected to the touch scanning elements and the touch signal lines, wherein each touch switch set comprises a plurality of touch switches, and each touch switch has a first end and a control end; and
a plurality of touch electrodes separated from each other, wherein each touch electrode is electrically connected to at least one touch switch set, wherein a plurality of first ends of the touch switches of each touch switch set are electrically connected to the same touch electrode, and a plurality of control ends of the touch switches of each touch switch set are electrically connected to the same touch scanning element;
a plurality of pixel scanning lines and a plurality of pixel signal lines which are arranged in a staggered way and define a plurality of pixel areas;
the pixel structures are respectively arranged in the pixel areas and are electrically connected with the pixel scanning lines and the pixel signal lines;
the touch control electrode is overlapped with the pixel structures, and a plurality of touch control switches of a touch control switch group electrically connected with the touch control electrode are respectively arranged in different pixel areas.
2. The touch device of claim 1, wherein the touch switches of each touch switch set are connected in parallel.
3. The touch device of claim 1, wherein the pixel areas are arranged in a plurality of rows, and a plurality of pixel areas in each row are arranged along an extending direction of the touch scan element; in the pixel areas of each row, a touch switch is arranged in the (nx · px +1) th pixel area, px is a positive integer, nx is 0 and a positive integer from 1 to mx, and mx is greater than 1.
4. The touch device of claim 1, wherein the pixel regions are arranged in a plurality of rows, and a plurality of pixel regions in each row are arranged along an extending direction of the touch signal line; in the pixel regions of each row, a touch switch is arranged in the (ny & py +1) th pixel region, py is a positive integer, ny is 0 and a positive integer from 1 to my, and my is larger than 1.
5. The touch device of claim 1, wherein a portion of the pixel areas is provided with a touch switch, and another portion of the pixel areas is not provided with a touch switch.
6. The touch device as claimed in claim 1, wherein each of the touch switches further has a second end, and the second ends of the touch switches of the same touch switch set are electrically connected to the same touch signal line of the touch signal lines, the touch device further comprising:
and the same touch signal line is electrically connected with a pin of the integrated circuit.
7. The touch device of claim 1, wherein the touch switches electrically connected to the same touch electrode are arranged in a plurality of rows, and the touch switches in each row are arranged along an extending direction of the same one of the touch signal lines, the touch device further comprising:
the first connecting wires are respectively electrically connected with the second ends of the touch control switches in multiple rows; and
and the second connecting lines are staggered with the first connecting lines, wherein the first connecting lines are connected to the second connecting lines, and the second connecting lines are electrically connected to the same touch signal line.
8. The touch device as claimed in claim 1, wherein each of the touch switches further has a second terminal, and the second terminals of the touch switches in the same touch switch set are electrically connected to different touch signal lines, respectively, the touch device further comprising:
and the different touch signal lines are respectively and electrically connected with the pins of the integrated circuit.
9. The touch device of claim 1, wherein the same touch scan element comprises a plurality of structurally separated touch scan lines, each touch scan line has a head end and a tail end, the head ends of the touch scan lines are directly connected, and the tail ends of the touch scan lines are directly connected.
10. The touch device of claim 1, wherein the touch electrodes are arranged in a plurality of rows, the touch electrodes in each row are arranged in an extending direction of the touch scanning elements, and the same touch scanning element is electrically connected to the touch electrodes in adjacent rows.
11. The touch device of claim 10, wherein the touch electrodes are arranged in a plurality of rows, the touch electrodes in each row are arranged in a direction crossing the extending direction of the touch scanning elements, and the touch electrodes electrically connected to the same touch scanning element and located in the same row are electrically connected to different touch signal lines, respectively.
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| TW107127923 | 2018-08-10 | ||
| TW107127923A TWI675319B (en) | 2018-08-10 | 2018-08-10 | Touch apparatus |
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| CN109857273A CN109857273A (en) | 2019-06-07 |
| CN109857273B true CN109857273B (en) | 2022-03-15 |
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| TWI728723B (en) * | 2020-02-25 | 2021-05-21 | 友達光電股份有限公司 | Touch display panel |
| CN113363281A (en) * | 2020-03-05 | 2021-09-07 | 群创光电股份有限公司 | Display device |
| TWI825692B (en) * | 2022-04-27 | 2023-12-11 | 友達光電股份有限公司 | Touch display device and driving method |
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Also Published As
| Publication number | Publication date |
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| TWI675319B (en) | 2019-10-21 |
| TW202009661A (en) | 2020-03-01 |
| CN109857273A (en) | 2019-06-07 |
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