CN113534990B - Touch module and touch screen - Google Patents
Touch module and touch screen Download PDFInfo
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- CN113534990B CN113534990B CN202010321418.8A CN202010321418A CN113534990B CN 113534990 B CN113534990 B CN 113534990B CN 202010321418 A CN202010321418 A CN 202010321418A CN 113534990 B CN113534990 B CN 113534990B
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- 239000000758 substrate Substances 0.000 claims description 21
- 239000011810 insulating material Substances 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 9
- 230000006698 induction Effects 0.000 claims description 4
- 239000012774 insulation material Substances 0.000 claims 2
- 101100489713 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) GND1 gene Proteins 0.000 description 11
- 101100489717 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) GND2 gene Proteins 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 229920001621 AMOLED Polymers 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000010354 integration Effects 0.000 description 2
- 238000000059 patterning Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Classifications
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- 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
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
Abstract
The invention discloses a touch module and a touch screen, wherein a first edge electrode channel in a plurality of first electrode channels is divided into a first edge electrode sub-channel and a second edge electrode sub-channel which are insulated from each other, the first edge electrode sub-channel positioned at the outermost side of an edge is grounded, and the second edge electrode sub-channel is used as the original first edge electrode channel, so that the first electrode channels among the first edge electrode sub-channels can have grounding signals to shield interference of other signals in a first direction and a second direction, thereby effectively improving uniformity of signal quantity received or emitted by the second edge electrode sub-channels in the first electrode layer, realizing uniformity and stability of touch signals of the electrode channels positioned at the edge of the touch module, and improving uniformity of products.
Description
Technical Field
The present disclosure relates to touch devices, and particularly to a touch module and a touch screen.
Background
In recent years, AMOLED industry at home and abroad has been rapidly developed and has been developed toward integration and thinning due to an excellent display effect of an Active-matrix organic light emitting diode display (Active-matrix organic light emitting diode, AMOLED). In order to realize integration of display and touch control, a touch control structure (On cell touch) can be manufactured On the packaging layer, so that the overall thickness is greatly reduced; the touch structure can also be designed In a display module (In cell touch), so that the display panel has a touch function.
At present, compared with an ITO touch screen, the metal grid touch screen has the characteristics of lower resistance and uniform capacitance, and is widely applied to the aspect of screens.
Disclosure of Invention
The embodiment of the invention provides a touch module and a touch screen, which are used for solving the problem that strong signals on Tx wires of an existing touch structure and weak signals of an edge Rx channel are interfered by external electromagnetic waves.
The embodiment of the invention provides a touch module, which comprises a substrate, wherein the substrate is provided with a touch area and a non-touch area surrounding the touch area, and the touch area comprises a first electrode layer and a second electrode layer which are arranged in an insulating way; the first electrode layer comprises a plurality of mutually insulated first electrode channels which are arranged along a first direction and extend along a second direction, and each first electrode channel is composed of a metal grid; the second electrode layer comprises a plurality of mutually insulated second electrode channels which are arranged along the second direction and extend along the first direction, and each second electrode channel is composed of a metal grid; the first direction and the second direction are arranged in a crossing way;
the plurality of first electrode channels includes: a first edge electrode channel located at both side edges of the first electrode layer, and a first intermediate electrode channel located between the first edge electrode channels;
each first edge electrode channel comprises a first edge electrode sub-channel and a second edge electrode sub-channel which are insulated from each other, and the first edge electrode sub-channel and the second edge electrode sub-channel are arranged along the first direction and extend along the second direction;
the second edge electrode sub-channel is located between the first edge electrode sub-channel and the first intermediate electrode channel, and the first edge electrode sub-channel is grounded.
Optionally, in a specific implementation, in the touch module provided by the embodiment of the present invention, the plurality of second electrode channels include: a second edge electrode channel located at both side edges of the second electrode layer, and a second intermediate electrode channel located between the second edge electrode channels;
each of the second edge electrode channels includes a third edge electrode sub-channel and a fourth edge electrode sub-channel insulated from each other, the third edge electrode sub-channel and the fourth edge electrode sub-channel being arranged along the second direction and extending along the first direction;
the fourth edge electrode sub-channel is located between the third edge electrode sub-channel and the second intermediate electrode channel, and the third edge electrode sub-channel is grounded.
Optionally, in an implementation manner, in the touch module provided by the embodiment of the present invention, the dimensions of the first edge electrode sub-channel and the second edge electrode sub-channel are the same, and the dimensions of the third edge electrode sub-channel and the fourth edge electrode sub-channel are the same.
Optionally, in a specific implementation, in the touch module provided by the embodiment of the present invention, a vacuum or filling insulating material is provided between adjacent first electrode channels, and a vacuum or filling insulating material is provided between adjacent second electrode channels.
Optionally, in a specific implementation, in the touch module provided by the embodiment of the present invention, a vacuum or filling insulating material is provided between the first edge electrode sub-channel and the second edge electrode sub-channel, and a vacuum or filling insulating material is provided between the third edge electrode sub-channel and the fourth edge electrode sub-channel.
Optionally, in a specific implementation, in the touch module provided by the embodiment of the present invention, the non-touch area includes a first lead layer and a second lead layer that are disposed in an insulating manner, where the first lead layer and the first electrode layer belong to the same layer, and the second lead layer and the second electrode layer belong to the same layer;
the first lead layer comprises a first grounding signal wire and a plurality of first electrode leads, the first grounding signal wire is electrically connected with the first edge electrode sub-channels, and the plurality of first electrode leads are electrically connected with first electrodes in the plurality of first electrode channels in a one-to-one correspondence manner;
the second lead layer comprises a second grounding signal wire and a plurality of second electrode leads, the second grounding signal wire is electrically connected with the third edge electrode sub-channel, and the plurality of second electrode leads are electrically connected with the second electrodes in the plurality of second electrode channels in a one-to-one correspondence manner.
Optionally, in an implementation manner, in the touch module provided by the embodiment of the present invention, the orthographic projection of the first ground signal line on the substrate is located between orthographic projections of the plurality of first electrode leads on the substrate and orthographic projections of the plurality of second electrode leads on the substrate.
Optionally, in an implementation manner, in the touch module provided by the embodiment of the present invention, orthographic projection of the second ground signal line on the substrate surrounds orthographic projections of the plurality of second electrode leads on the substrate.
Optionally, in a specific implementation, in the touch module provided by the embodiment of the present invention, the first electrode is an sensing electrode, and the second electrode is a driving electrode; or the first electrode is a driving electrode, and the second electrode is an induction electrode.
Correspondingly, the embodiment of the invention also provides a touch screen, which comprises the touch module provided by the embodiment of the invention.
The beneficial effects of the invention are as follows:
according to the touch module and the touch screen provided by the embodiment of the invention, the first edge electrode channels in the plurality of first electrode channels are divided into the first edge electrode sub-channels and the second edge electrode sub-channels which are insulated from each other, the first edge electrode sub-channels positioned at the outermost sides of the edges are grounded, and the second edge electrode sub-channels are used as the original first edge electrode channels, so that the first electrode channels among the first edge electrode sub-channels can have grounding signals to shield interference of other signals in the first direction and the second direction, the uniformity of signal quantity received or emitted by the second edge electrode sub-channels in the first electrode layers can be effectively improved, the uniformity and stability of touch signals of the electrode channels positioned at the edges of the touch module are realized, and the uniformity of products is improved.
Drawings
FIG. 1 is a schematic top view of a touch module according to the related art;
FIG. 2 is a schematic diagram of a touch module according to a second embodiment of the present invention;
fig. 3 is a schematic top view of a touch module according to an embodiment of the invention;
FIG. 4 is a schematic diagram illustrating a top view of a touch module according to an embodiment of the invention;
FIG. 5 is a third schematic top view of a touch module according to an embodiment of the invention;
FIG. 6 is a schematic top view of a touch module according to an embodiment of the present invention;
fig. 7 is a schematic top view of a touch module according to an embodiment of the invention.
Detailed Description
In order to make the technical scheme and advantages of the invention clearer, the specific implementation of the touch module and the touch screen provided by the embodiment of the invention are described in detail below with reference to the accompanying drawings.
The thickness and shape of each layer of film in the drawing do not reflect the real proportion of the touch module, and are only partial structures of the touch module, so that the invention is only schematically illustrated.
In recent years, with the advancement of intelligent display technology, an OLED display has become one of the hot spots in the research field of the present display, and with the thinning of the display panel, the display panel and the touch are more and more tightly combined, however, with the tight combination of the display panel and the touch, some display problems still exist. Aiming at the metal grid touch screen, a signal transmitting end Tx (driving electrode) and a signal receiving end Rx (sensing electrode) of a visible area (touch area) adopt a metal grid structure to collect touch signals. As shown in fig. 1 and 2, fig. 1 is a schematic top view structure of a touch area Tx, fig. 2 is a schematic top view structure of a touch area Rx, tx and Rx are arranged in an insulating and crossing manner, tx is electrically connected to a chip (IC, not shown) of a non-touch area through a Tx lead 01, and Rx is electrically connected to a chip (IC) of a non-touch area through an Rx lead 02; in touch, since the IC provides a strong signal to Tx, rx receives a touch signal according to the plate capacitance principle, in order to avoid the influence of the strong signal on Tx lead 01 on the weak signal on Rx lead 02 in the fan-out area of the lead, a ground signal line GND is further disposed between Tx lead 01 and Rx lead 02 to shield the influence of the strong signal on Tx lead 01 on the weak signal on Rx lead 02. However, as can be seen from fig. 2, there is no shielding line between the Rx channels and the Tx channels at the left and right edges of the touch area, so that weak signals of the Rx channels of the touch area are subjected to electromagnetic interference of strong signals of the Tx trace 01 area and the external environment at the left and right edges of the touch area, resulting in poor uniformity of Rx signals received by the IC, and products exceeding the processing specification of the IC are judged as defective products and cannot be shipped, resulting in yield loss of factories.
In view of the above, as shown in fig. 3 to 6, the touch module of the present invention includes a substrate 1, the substrate 1 has a touch area AA and a non-touch area BB surrounding the touch area AA, the touch area AA includes a first electrode layer and a second electrode layer that are disposed in an insulating manner, i.e., the first electrode layer and the second electrode layer are disposed in a stacked manner, and an insulating layer is disposed between the first electrode layer and the second electrode layer, where in order to clearly illustrate a film structure of the first electrode layer and the second electrode layer, fig. 3 is a schematic top view of the first electrode layer, fig. 4 is an enlarged schematic top view of a partial structure in the first electrode layer shown in fig. 3, fig. 5 is a schematic top view of the second electrode layer, and fig. 6 is an enlarged schematic top view of a partial structure in the second electrode layer shown in fig. 5; as shown in fig. 3, the first electrode layer includes a plurality of first electrode channels (only a part of the first electrode channels is illustrated in fig. 3) insulated from each other, the plurality of first electrode channels being arranged in a first direction X and extending in a second direction Y, each first electrode channel being composed of a metal mesh; as shown in fig. 5, the second electrode layer includes a plurality of second electrode channels (fig. 5 illustrates only a part of the second electrode channels) insulated from each other, the plurality of second electrode channels being arranged in the second direction Y and extending in the first direction X, each second electrode channel being composed of a metal mesh; the first direction X and the second direction Y are arranged in a crossing way;
as shown in fig. 3, the plurality of first electrode channels includes: a first edge electrode channel 21 located at both side edges of the first electrode layer, and a first intermediate electrode channel 22 located between the first edge electrode channels 21;
each first edge electrode 21 channel includes a first edge electrode sub-channel 211 and a second edge electrode sub-channel 212 insulated from each other, the first edge electrode sub-channel 211 and the second edge electrode sub-channel 212 being aligned along a first direction X and extending along a second direction Y;
the second edge electrode sub-channel 212 is located between the first edge electrode sub-channel 211 and the first intermediate electrode channel 22, and the first edge electrode sub-channel 211 is grounded, i.e., the first edge electrode sub-channel 211 is electrically connected to a first ground signal line GND1, and the first ground signal line GND1 is described later.
According to the touch module provided by the embodiment of the invention, the first edge electrode channels 21 in the plurality of first electrode channels are divided into the first edge electrode sub-channels 211 and the second edge electrode sub-channels 212 which are insulated from each other, the first edge electrode sub-channels 211 positioned at the outermost side of the edge are grounded, and the second edge electrode sub-channels 212 are used as the original first edge electrode channels 21, so that the first electrode channels between the first edge electrode sub-channels 211 can have grounding signals to shield interference of other signals in the first direction X and the second direction Y, the uniformity of signal receiving or transmitting quantity of the second edge electrode sub-channels 212 in the first electrode layer can be effectively improved, and the uniformity and stability of touch signals of the electrode channels with the touch module positioned at the edge are realized, so that the uniformity of products is improved.
In a specific implementation, in order to prevent the problem that other signals interfere with the signals of the second electrode channels located at two side edges of the second electrode layer and cause unstable signals of the second electrode channels located at two side edges of the second electrode layer, in the touch module provided by the embodiment of the present invention, as shown in fig. 5, a plurality of second electrode channels include: second edge electrode channels 31 located at both side edges of the second electrode layer, and second intermediate electrode channels 32 located between the second edge electrode channels 31;
each of the second edge electrode channels 31 includes a third edge electrode sub-channel 311 and a fourth edge electrode sub-channel 312 insulated from each other, the third edge electrode sub-channel 311 and the fourth edge electrode sub-channel 312 being aligned in the second direction Y and extending in the first direction X;
the fourth edge electrode sub-channel 312 is located between the third edge electrode sub-channel 311 and the second intermediate electrode channel 32, and the third edge electrode sub-channel 311 is grounded, i.e., the third edge electrode sub-channel 311 is electrically connected to the second ground signal line GND2, and the second ground signal line GND2 is described later. Therefore, the interference of other signals can be shielded by the grounding signals of the second electrode channel in the first direction X and the second direction Y, and the interference of other signals can be shielded by the grounding signals of the first electrode channel and the second electrode channel in the first direction X and the second direction Y, so that the uniformity of signal quantity received or transmitted by the electrode channel positioned at the edge can be further effectively improved, the uniformity and the stability of the touch signals of the edge channel of the touch module are realized, and the uniformity of products is improved.
It should be noted that, one repeating unit in one first electrode channel and one second electrode channel is referred to as a pitch, and one pitch is approximately 4mm to 6mm, where a pitch of 4mm is taken as an example, that is, the smallest repeating unit in the first direction X and the second direction Y of the touch module is 4mm, as shown in fig. 4 and fig. 6, fig. 4 is a schematic structural diagram of the corresponding one pitch in fig. 3, and fig. 6 is a schematic structural diagram of the corresponding one pitch in fig. 5, so that the first edge electrode channel 21 is 4mm wide and the second edge electrode channel 31 is 4mm wide.
In a specific implementation, in the touch module provided by the embodiment of the present invention, as shown in fig. 3, the dimensions of the first edge electrode sub-channel 211 and the second edge electrode sub-channel 212 are the same, that is, the first edge electrode sub-channel 21 having the same dimension as the first middle electrode channel 22 is equally divided into two first edge electrode sub-channels 211 and second edge electrode sub-channels 212 having the same dimension, the second edge electrode sub-channel 212 is used as the original first edge electrode channel 21, and the first edge electrode sub-channel 211 is grounded, so that interference of other signals to the second edge electrode sub-channel 212 can be shielded, and signals on electrode channels at the edge of the first electrode layer can be uniform and stable; as shown in fig. 5, the third edge electrode sub-channel 311 and the fourth edge electrode sub-channel 312 have the same size, that is, the second edge electrode sub-channel 31 having the same size as the second intermediate electrode channel 32 is equally divided into the two third edge electrode sub-channels 311 and the fourth edge electrode sub-channels 312 having the same size, the fourth edge electrode sub-channel 312 is used as the original second edge electrode sub-channel 31, and the third edge electrode sub-channel 311 is grounded, so that interference of other signals to the fourth edge electrode sub-channel 312 can be shielded, and signals on the electrode channels at the edge of the second electrode layer can be uniformly stabilized.
In a specific implementation, in order to insulate adjacent first electrode channels from each other, in the touch module provided by the embodiment of the present invention, as shown in fig. 3, vacuum or insulating material is filled between adjacent first electrode channels (for example, vacuum is formed between 21 and 22, and vacuum is formed between 22 and 22); as shown in fig. 4, the adjacent second electrode channels are vacuum or filled with insulating material (e.g., vacuum between 31 and 32, vacuum between 32 and 32, etc.).
In the embodiment of the invention, in order to insulate the first edge electrode sub-channel and the second edge electrode sub-channel from each other and insulate the third edge electrode sub-channel and the fourth edge electrode sub-channel from each other, as shown in fig. 3, in the touch module provided by the embodiment of the invention, vacuum or insulating material is filled between the first edge electrode sub-channel 211 and the second edge electrode sub-channel 212 (for example, vacuum is used between 211 and 212); as shown in fig. 4, a vacuum is provided between the third edge electrode sub-channel 311 and the fourth edge electrode sub-channel 312 or an insulating material is filled (for example, a vacuum is provided between 311 and 312).
In a specific implementation, in the touch module provided by the embodiment of the present invention, as shown in fig. 3 and 5, a non-touch area BB includes a first lead layer (02) and a second lead layer (01) that are disposed in an insulating manner, where the first lead layer (02) and the first electrode layer belong to the same layer, and the second lead layer (01) and the second electrode layer belong to the same layer; therefore, the patterns of the first lead layer (02) and the first electrode layer can be formed through one-time patterning process only by changing the original patterning pattern when the first electrode layer is formed, and the process for independently preparing the first lead layer (02) is not needed to be added, so that the preparation process flow can be simplified, the production cost is saved, and the production efficiency is improved; and the original pattern is changed when the second electrode layer is formed, the patterns of the second lead layer (01) and the second electrode layer can be formed through one-time pattern forming process, the process of independently preparing the second lead layer (01) is not needed to be added, the preparation process flow can be simplified, the production cost is saved, and the production efficiency is improved. Since fig. 3 and 5 are schematic plan view structures of the present invention, the first lead layer (02) and the second lead layer (01) are shown on the same plane, and of course the first lead layer (02) and the first electrode layer are the same layer, and the second lead layer (01) and the second electrode layer are the same layer;
the first lead layer (02) comprises a first grounding signal line GND1 and a plurality of first electrode leads 02, the first grounding signal line GND1 is electrically connected with the first edge electrode sub-channel 211, and the plurality of first electrode leads 02 are electrically connected with first electrodes (212 and 22) in the plurality of first electrode channels in a one-to-one correspondence manner;
the second lead layer (01) includes a second ground signal line GND2 and a plurality of second electrode leads 01, the second ground signal line GND2 is electrically connected to the third edge electrode sub-channel 311, and the plurality of second electrode leads 01 are electrically connected to the second electrodes (312, 32) in the plurality of second electrode channels in a one-to-one correspondence.
In particular implementation, the first and second ground signal lines GND1 and GND2 in fig. 4 are electrically connected through an insulating layer penetrating between the first and second electrode layers.
In a specific implementation, in the touch module provided by the embodiment of the present invention, as shown in fig. 3 and 5, the orthographic projection of the first ground signal line GND1 on the substrate 1 is located between the orthographic projection of the plurality of first electrode leads 02 on the substrate 1 and the orthographic projection of the plurality of second electrode leads 01 on the substrate 1. Thus, the periphery of the plurality of first electrode channels and the periphery of the plurality of first electrode leads 02 are surrounded by the grounding signals, and interference of external signals can be effectively shielded.
In a specific implementation, in the touch module provided by the embodiment of the present invention, as shown in fig. 5, the orthographic projection of the second ground signal line GND2 on the substrate 1 surrounds the orthographic projections of the plurality of second electrode leads 01 on the substrate 1. Therefore, the periphery of the plurality of second electrode channels and the plurality of second electrode leads 01 are surrounded by the grounding signals, so that the interference of external electromagnetic signals can be effectively shielded.
In a specific implementation, in the touch module provided by the embodiment of the invention, a first electrode in a first electrode channel is an induction electrode, and a second electrode in a second electrode channel is a driving electrode; or the first electrode in the first electrode channel is a driving electrode, and the second electrode in the second electrode channel is an induction electrode.
Specifically, as shown in fig. 3 and 5, the core of the present invention is illustrated by taking the first electrode in the first electrode channels (212, 22) in fig. 3 as the sensing electrode Rx, and the second electrode in the second electrode channels (312, 32) in fig. 3 as the driving electrode Tx.
Specifically, as shown in fig. 3 and 5, since the IC provides a strong signal to Tx in the second electrode channels (312, 32), according to the plate capacitance principle, rx in the first electrode channels (212, 22) receives a touch signal, the present invention realizes stability and uniformity of the edge Rx signal received by the IC by electrically connecting the first edge electrode sub-channel 211 with the first ground signal line GND1, and since the orthographic projection of the first ground signal line GND1 is located between the orthographic projections of the first electrode lead 02 and the second electrode lead 01, the first edge electrode sub-channel 211 and the first ground signal line GND1 at both side edges of the first electrode layer enclose the plurality of first electrode channels, so that the strong signal on the Tx lead 01 at both side edges of the first edge electrode sub-channel 211 is shielded by the signal on GND1, and the strong signal on the Tx lead 01 does not affect the weak signal on Rx and the first electrode lead 02; in addition, according to the invention, the first edge electrode channel 21 is divided into the first edge electrode sub-channel 211 and the second edge electrode sub-channel 212, the first edge electrode sub-channel 211 is grounded, and the second edge electrode sub-channel 212 is used as the original first edge electrode channel 21, so that the signal variation of the first edge electrode channel 21 is also reduced when the first edge electrode channel 21 is reduced, and in an IC algorithm, the touch signal is mainly analyzed according to the signal variation, so that the signal quantity of the first edge electrode channel 21 can better meet the strict specification of an IC, the problem that abrupt points are difficult to occur in the edge electrode channel is solved, and the factory yield is improved.
As shown in fig. 5, the second edge electrode channel 31 is divided into the third edge electrode sub-channel 311 and the fourth edge electrode sub-channel 312, the third edge electrode sub-channel 311 is grounded, and the fourth edge electrode sub-channel 312 is used as the original second edge electrode channel 31, so that the second electrode layer and the second electrode lead 01 are completely surrounded by the second grounding signal line GND2, and thus, the GND2 signal shields the external electromagnetic wave signal, so that the external electromagnetic wave signal does not interfere with the Tx channel, thereby improving the uniformity and stability of the Tx signal, and further ensuring the uniformity and stability of the Rx signal.
In the embodiment, as shown in fig. 3 to 6, the first edge electrode channel 21 and the first intermediate electrode channel 22 are electrically connected to the first electrode lead 02 through a connection 03 (Connect Pad), and the second edge electrode channel 31 and the second intermediate electrode channel 32 are electrically connected to the second electrode lead 01 through a connection 04. The connection portion 03 corresponding to the first edge electrode path 21 is divided into a first connection portion 031 and a second connection portion 032, the first edge electrode sub-path 211 is electrically connected to the first ground signal line GND1 through the first connection portion 031, and the second edge electrode sub-path 212 is electrically connected to the first electrode lead 02 through the second connection portion 032. The connection portion 04 corresponding to the second edge electrode channel 31 is divided into a third connection portion 041 and a fourth connection portion 042, the third edge electrode sub-channel 311 is electrically connected to the second ground signal line GND2 through the third connection portion 041, and the fourth edge electrode sub-channel 312 is electrically connected to the second electrode lead 01 through the fourth connection portion 042.
In implementation, as shown in fig. 7, fig. 7 is a schematic diagram of the overall structure of fig. 3 and fig. 5, it can be seen that the edge electrode channels in the first electrode channel and the second electrode channel are uniformly divided into two, and the outermost edge electrode sub-channels are all grounded, so that the scheme of the embodiment of the invention can shield the interference of the Tx strong signal on the Rx signal on one hand, and shield the interference of the external electromagnetic wave signal on the Tx signal on the other hand, so that the uniformity and stability of the transmitting and receiving signals of the touch module can be realized, and the uniformity and stability of the product are improved; and because the first edge electrode channel 21 becomes smaller, the signal quantity received by the first edge electrode channel 21 becomes smaller, and the method can be better adapted to the specification of an IC algorithm, so that the problem that the edge electrode channel is not easy to generate abrupt points is solved, and the factory yield is improved.
It should be noted that, the line widths of the Tx channel, the Rx channel and the corresponding leads in the drawings of the present invention are different, only for distinguishing the Tx channel and the Rx channel, and in practical application, the line widths of the Tx channel, the Rx channel and the corresponding leads are the same.
It should be noted that the examples described above only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but should not be construed as limiting the scope of the invention. It should be noted that several variations and modifications can be made without departing from the inventive concept, as long as it is ensured that the edge electrode channel is divided into two electrode channels, the outermost one being grounded and the other one being the original electrode channel, which are all within the scope of the present invention.
Of course, in specific implementation, the touch module provided in the embodiment of the present invention further includes other film layers well known to those skilled in the art, which are not listed here, and the present invention only schematically illustrates the arrangement manner of the edge electrode channels of the touch module in the present invention.
Based on the same inventive concept, the embodiment of the invention also provides a touch screen, which comprises the touch module provided by the embodiment of the invention. The touch screen may be: any product or component with display function such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like. The principle of the touch screen for solving the problem is similar to that of the touch module, so that the implementation of the touch screen can be referred to the implementation of the touch module, and the repetition is omitted herein.
According to the touch module and the touch screen provided by the embodiment of the invention, the first edge electrode channels in the plurality of first electrode channels are divided into the first edge electrode sub-channels and the second edge electrode sub-channels which are insulated from each other, the first edge electrode sub-channels positioned at the outermost sides of the edges are grounded, and the second edge electrode sub-channels are used as the original first edge electrode channels, so that the first electrode channels among the first edge electrode sub-channels can have grounding signals to shield interference of other signals in the first direction and the second direction, the uniformity of signal quantity received or emitted by the second edge electrode sub-channels in the first electrode layers can be effectively improved, the uniformity and stability of touch signals of the electrode channels positioned at the edges of the touch module are realized, and the uniformity of products is improved.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (10)
1. The touch module is characterized by comprising a substrate, wherein the substrate is provided with a touch area and a non-touch area surrounding the touch area, and the touch area comprises a first electrode layer and a second electrode layer which are arranged in an insulating manner; the first electrode layer comprises a plurality of mutually insulated first electrode channels which are arranged along a first direction and extend along a second direction, and each first electrode channel is composed of a metal grid; the second electrode layer comprises a plurality of mutually insulated second electrode channels which are arranged along the second direction and extend along the first direction, and each second electrode channel is composed of a metal grid; the first direction and the second direction are arranged in a crossing way;
the plurality of first electrode channels includes: a first edge electrode channel located at both side edges of the first electrode layer, and a first intermediate electrode channel located between the first edge electrode channels;
each first edge electrode channel comprises a first edge electrode sub-channel and a second edge electrode sub-channel which are insulated from each other, and the first edge electrode sub-channel and the second edge electrode sub-channel are arranged along the first direction and extend along the second direction;
the second edge electrode sub-channel is located between the first edge electrode sub-channel and the first intermediate electrode channel, and the first edge electrode sub-channel is grounded.
2. The touch module of claim 1, wherein the plurality of second electrode channels comprises: a second edge electrode channel located at both side edges of the second electrode layer, and a second intermediate electrode channel located between the second edge electrode channels;
each of the second edge electrode channels includes a third edge electrode sub-channel and a fourth edge electrode sub-channel insulated from each other, the third edge electrode sub-channel and the fourth edge electrode sub-channel being arranged along the second direction and extending along the first direction;
the fourth edge electrode sub-channel is located between the third edge electrode sub-channel and the second intermediate electrode channel, and the third edge electrode sub-channel is grounded.
3. The touch module of claim 2, wherein the first edge electrode sub-channel and the second edge electrode sub-channel are the same size, and the third edge electrode sub-channel and the fourth edge electrode sub-channel are the same size.
4. The touch module of claim 2, wherein vacuum or filled insulation material is provided between adjacent ones of the first electrode channels and vacuum or filled insulation material is provided between adjacent ones of the second electrode channels.
5. The touch module of claim 2, wherein a vacuum or insulating material is filled between the first edge electrode sub-channel and the second edge electrode sub-channel, and a vacuum or insulating material is filled between the third edge electrode sub-channel and the fourth edge electrode sub-channel.
6. The touch module of claim 2, wherein the non-touch area comprises a first lead layer and a second lead layer arranged in an insulating manner, the first lead layer and the first electrode layer belong to the same layer, and the second lead layer and the second electrode layer belong to the same layer;
the first lead layer comprises a first grounding signal wire and a plurality of first electrode leads, the first grounding signal wire is electrically connected with the first edge electrode sub-channels, and the plurality of first electrode leads are electrically connected with first electrodes in the plurality of first electrode channels in a one-to-one correspondence manner;
the second lead layer comprises a second grounding signal wire and a plurality of second electrode leads, the second grounding signal wire is electrically connected with the third edge electrode sub-channel, and the plurality of second electrode leads are electrically connected with the second electrodes in the plurality of second electrode channels in a one-to-one correspondence manner.
7. The touch module of claim 6, wherein the orthographic projection of the first ground signal line on the substrate is between orthographic projections of the plurality of first electrode leads on the substrate and orthographic projections of the plurality of second electrode leads on the substrate.
8. The touch module of claim 6, wherein an orthographic projection of the second ground signal line on the substrate surrounds an orthographic projection of the plurality of second electrode leads on the substrate.
9. The touch module of claim 6, wherein the first electrode is a sensing electrode and the second electrode is a driving electrode; or the first electrode is a driving electrode, and the second electrode is an induction electrode.
10. A touch screen comprising the touch module of any one of claims 1-9.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105760033A (en) * | 2016-02-05 | 2016-07-13 | 上海天马微电子有限公司 | Touch screen and touch display electronic device |
| DE102016112931A1 (en) * | 2015-12-08 | 2017-06-08 | Shanghai Avic Opto Electronics Co., Ltd. | Integrated display panel with touch control and touch display device |
| CN208819186U (en) * | 2018-10-31 | 2019-05-03 | 北京集创北方科技股份有限公司 | A kind of touch electrode structure and touch control display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI471642B (en) * | 2010-09-24 | 2015-02-01 | Wintek Corp | Touch panel structure and its touch display panel |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016112931A1 (en) * | 2015-12-08 | 2017-06-08 | Shanghai Avic Opto Electronics Co., Ltd. | Integrated display panel with touch control and touch display device |
| CN105760033A (en) * | 2016-02-05 | 2016-07-13 | 上海天马微电子有限公司 | Touch screen and touch display electronic device |
| CN208819186U (en) * | 2018-10-31 | 2019-05-03 | 北京集创北方科技股份有限公司 | A kind of touch electrode structure and touch control display device |
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