CN109933240A - A kind of touch module and display device - Google Patents

A kind of touch module and display device Download PDF

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Publication number
CN109933240A
CN109933240A CN201910196443.5A CN201910196443A CN109933240A CN 109933240 A CN109933240 A CN 109933240A CN 201910196443 A CN201910196443 A CN 201910196443A CN 109933240 A CN109933240 A CN 109933240A
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China
Prior art keywords
electrode
touch
compensating
control
touch module
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CN201910196443.5A
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CN109933240B (en
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吴信涛
郑启涛
刘纯建
李媛
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BOE Technology Group Co Ltd
Hefei Xinsheng Optoelectronics Technology Co Ltd
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BOE Technology Group Co Ltd
Hefei Xinsheng Optoelectronics Technology Co Ltd
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Abstract

The invention discloses a kind of touch module and display devices, it is electrically connected by being arranged in first electrode and second electrode adjacent position with first electrode, with the compensating electrode of second electrode mutually insulated, increase the induction region of first electrode and second electrode, in this way before touch-control, there is first capacitor value between first electrode and second electrode, there is the second capacitance between compensating electrode and second electrode, capacitance i.e. before touch-control is the sum of first capacitor value and the second capacitance, the capacitor before touch-control is only the first capacitor value coupled between first electrode and second electrode compared to the prior art, capacitance before the application touch-control is larger, the capacitance generated after being touched due to user is not much different, therefore the application passes through the capacitance before increasing touch-control, the variable quantity of capacitance after touch-control can be increased, to improve the touching of touch module Control sensitivity.

Description

A kind of touch module and display device
Technical field
The present invention relates to technical field of touch-control display more particularly to a kind of touch modules and display device.
Background technique
With the continuous development of touch technology, requirement of the people to touch-control performance is gradually promoted.High-end product is similar to It is necessary to have the pattern structures of smaller sensor pitch for the application of capacitance type fingerprint identification aspect to realize, but reduce Sensor pitch will will lead to the reduction of pattern itself capacitance, and then will lead to the sensitivity decrease of sensor, especially right The influence of capacitance type fingerprint identification aspect is rather significant, is not enough to penetrate cover sheet thickness so that capacitance signal amount is lower, cause Sensor touch-control is insensitive or even touch-control fails, this limits the development of capacitance type fingerprint identification technology to a certain extent.
Summary of the invention
A kind of touch module and display device provided in an embodiment of the present invention, to improve the sensitivity of touch module.
Therefore, the embodiment of the invention provides a kind of touch modules, including underlay substrate, and are located at the underlay substrate On the touch control electrode layer, insulating layer and the compensating electrode layer that are cascading;Wherein, the touch control electrode layer includes arranged in a crossed manner And the first electrode and second electrode of mutually insulated, the compensating electrode layer include multiple settings in the first electrode and described The compensating electrode of the adjacent position of second electrode, the compensating electrode and the adjacent first electrode and adjacent described the Orthographic projection of two electrodes on the underlay substrate all has overlapping region, the compensating electrode and the first electrode overlapping Region electrical connection, the compensating electrode and the second electrode pass through the insulating layer mutually insulated in overlapping region.
Further, in the specific implementation, in above-mentioned touch module provided in an embodiment of the present invention, the first electrode Including multiple first electrode blocks, the second electrode includes multiple second electrode blocks;
Each first electrode block is separated by the second electrode, adjacent first electricity in the same first electrode Pole block is electrically connected by the connecting bridge to insulate with the second electrode;Or, each second electrode block by the first electrode every It opens, the adjacent second electrode block is electrically connected by the connecting bridge to insulate with the first electrode in the same second electrode It connects;
The compensating electrode and the connecting bridge same layer are arranged.
Further, in the specific implementation, in above-mentioned touch module provided in an embodiment of the present invention, the first electrode Compensating electrode is respectively provided between block and adjacent each second electrode block.
Further, in the specific implementation, in above-mentioned touch module provided in an embodiment of the present invention, the compensating electrode The extending direction for extending perpendicularly to gap between the first electrode block and the second electrode block.
Further, in the specific implementation, in above-mentioned touch module provided in an embodiment of the present invention, in the connecting bridge The compensating electrode of two sides is symmetrical.
Further, in the specific implementation, in above-mentioned touch module provided in an embodiment of the present invention, each compensation electricity The shape of pole is consistent, size is identical.
Further, in the specific implementation, in above-mentioned touch module provided in an embodiment of the present invention, the compensating electrode For latticed or strip.
Further, in the specific implementation, in above-mentioned touch module provided in an embodiment of the present invention, the compensating electrode Material be metal material or transparent conductive material.
Further, in the specific implementation, in above-mentioned touch module provided in an embodiment of the present invention, the first electrode For touch-driven electrode, the second electrode is touch-control sensing electrode;Or,
The first electrode is touch-control sensing electrode, and the second electrode is touch-driven electrode.
Correspondingly, the embodiment of the invention also provides a kind of display devices, including above-mentioned provided in an embodiment of the present invention Touch module described in one.
The embodiment of the present invention the utility model has the advantages that
Above-mentioned touch module and display device provided in an embodiment of the present invention, including underlay substrate, and it is located at substrate base Touch control electrode layer, insulating layer and the compensating electrode layer being cascading on plate;Wherein, touch control electrode layer include it is arranged in a crossed manner and The first electrode and second electrode of mutually insulated, compensating electrode layer include multiple the adjacent of first electrode and second electrode being arranged in Compensating electrode at position, compensating electrode and the orthographic projection of adjacent first electrode and adjacent second electrode on underlay substrate Overlapping region is all had, compensating electrode is electrically connected with first electrode in overlapping region, and compensating electrode and second electrode are in crossover region Domain passes through insulating layer mutually insulated.The present invention passes through in first electrode and the setting of second electrode adjacent position and first electrode electricity Connection, the compensating electrode with second electrode mutually insulated, increase the induction region of first electrode and second electrode, are touching in this way Before control, there is first capacitor value between first electrode and second electrode, there is the second capacitor between compensating electrode and second electrode Value, i.e. capacitance before touch-control are the sum of first capacitor value and the second capacitance, compared to the prior art the capacitor before touch-control It is only the first capacitor value coupled between first electrode and second electrode, the capacitance before the application touch-control is larger, due to user The capacitance generated after touch is not much different, therefore the application can increase electricity after touch-control by the capacitance before increasing touch-control The variable quantity of capacitance, to improve the touch-control sensitivity of touch module.
Detailed description of the invention
Fig. 1 is one of the overlooking structure diagram of touch module provided in an embodiment of the present invention;
Fig. 2 is the two of the overlooking structure diagram of touch module provided in an embodiment of the present invention;
Fig. 3 is the overlooking structure diagram of the touch module provided in the related technology;
Fig. 4 is the three of the overlooking structure diagram of touch module provided in an embodiment of the present invention;
Fig. 5 is the four of the overlooking structure diagram of touch module provided in an embodiment of the present invention;
Fig. 6 is the five of the overlooking structure diagram of touch module provided in an embodiment of the present invention.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention make into It is described in detail to one step, it is clear that the described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments. Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts all Other embodiments shall fall within the protection scope of the present invention.
The shapes and sizes of each component do not reflect actual proportions in attached drawing, and purpose is schematically illustrate the content of present invention.
A kind of touch module provided in an embodiment of the present invention, as depicted in figs. 1 and 2, Fig. 1 and Fig. 2 are the embodiment of the present invention The overlooking structure diagram of the touch module of offer, Fig. 2 are the enlarged partial top structural schematic diagram of Fig. 1, including underlay substrate 10 and the touch control electrode layer, insulating layer 20 and the compensating electrode layer that are cascading on underlay substrate 10;Wherein, touch-control Electrode layer includes arranged in a crossed manner and mutually insulated first electrode 1 and second electrode 2, and compensating electrode layer includes multiple settings the The compensating electrode 3 of the adjacent position of one electrode 1 and second electrode 2, compensating electrode 3 and adjacent first electrode 1 and adjacent Orthographic projection of the second electrode 2 on underlay substrate 10 all has overlapping region, and compensating electrode 3 and first electrode 1 are in overlapping region Electrical connection, compensating electrode 3 and second electrode 2 pass through 20 mutually insulated of insulating layer in overlapping region.
Above-mentioned touch module provided in an embodiment of the present invention, by first electrode and the setting of second electrode adjacent position It is electrically connected with first electrode, the compensating electrode with second electrode mutually insulated, increases the induction of first electrode and second electrode Region has first capacitor value, between compensating electrode and second electrode in this way before touch-control between first electrode and second electrode With the second capacitance, i.e. capacitance before touch-control is the sum of first capacitor value and the second capacitance, compared to the prior art Capacitor before touch-control is only the first capacitor value coupled between first electrode and second electrode, the capacitance before the application touch-control compared with Greatly, the capacitance generated after being touched due to user is not much different, and the application passes through the capacitance before increasing touch-control, Ke Yizeng The variable quantity of capacitance after big touch-control, to improve the touch-control sensitivity of touch module.
Further, in the specific implementation, in above-mentioned touch module provided in an embodiment of the present invention, such as Fig. 1 and Fig. 2 institute Show, first electrode 1 includes multiple first electrode blocks 11, and second electrode 2 includes multiple second electrode blocks 21, each first electrode block 11 It is separated by second electrode 2, adjacent first electrode block 11 passes through the connecting bridge that insulate with second electrode 2 in same first electrode 1 4 connection of electricity (Fig. 1 and Fig. 2 of the embodiment of the present invention are by taking the program as an example);Or, each second electrode block is separated by first electrode, it is same Adjacent second electrode block with the connecting bridge that first electrode insulate by being electrically connected in second electrode;
Compensating electrode 3 and 4 same layer of connecting bridge are arranged.In this way, it is only necessary to change original composition figure when forming connecting bridge 4 Shape can be formed the figure of compensating electrode 3 and connecting bridge 4 by a patterning processes, be increased without and compensating electrode 3 be prepared separately Technique, can simplify preparation process flow, save production cost, improve production efficiency.
Further, in the specific implementation, in order to further increasing the induction between compensating electrode and second electrode Region, to improve touch-control sensitivity, in above-mentioned touch module provided in an embodiment of the present invention, as depicted in figs. 1 and 2, first Compensating electrode 3 is respectively provided between electrode block 11 and adjacent each second electrode block 21.Setting compensating electrode can be passed through in this way The parameters such as position, quantity, spacing reach corresponding capacitance, realize expected touch function, to promote the sensitive of touch-control Degree enhances user experience.
Further, in the specific implementation, in order to increase the induction region between compensating electrode and second electrode, compensation is electric Can extremely there be different arrangement modes, in above-mentioned touch module provided in an embodiment of the present invention, as depicted in figs. 1 and 2, compensation The extending direction of electrode 3 can be perpendicular to the extending direction in gap between first electrode block 11 and second electrode block 21.
Certainly, when it is implemented, the extending direction of compensating electrode can also be parallel to first electrode block and second electrode block Between gap extending direction, as long as compensating electrode be electrically connected with first electrode, with second electrode mutually insulated.
Further, in the specific implementation, in above-mentioned touch module provided in an embodiment of the present invention, such as Fig. 1 and Fig. 2 institute Show, the compensating electrode 3 in 4 two sides of connecting bridge is symmetrical;And the shape of each compensating electrode 3 is consistent, size is identical.It in this way can be with Facilitate production, manufacture craft is unified, and the inductance capacitance between each compensating electrode 3 and second electrode 2 can be made to be distributed more Uniformly, be conducive to simplify the complexity of the calculating for the touch chip connecting with the touch module.
Certainly, in the specific implementation, the compensating electrode of connecting bridge two sides can also be not provided with by those skilled in the art It is symmetrical, each compensating electrode can also be designed as to different shapes, and their size is such as dimensioned to different Numerical value.
Further, in the specific implementation, in above-mentioned touch module provided in an embodiment of the present invention, the shape of compensating electrode Shape can be latticed or strip.Specifically, latticed to be formed by patterning processes, latticed can be diamond shape, six sides Shape etc..
Further, in the specific implementation, in above-mentioned touch module provided in an embodiment of the present invention, such as Fig. 1 and Fig. 2 institute Show, the shape of first electrode 1 and second electrode 2 can be latticed.
Further, in the specific implementation, due to being required based on touch accuracy, induction etc., first electrode and second Gap between electrode should reach a certain distance, and in the region for having first electrode or second electrode and without first electrode and The transmitance of region (gap between the two) light of second electrode is different, this has resulted in user and has seen very shallow net Trellis texture, therefore in above-mentioned touch module provided in an embodiment of the present invention, as illustrated in fig. 1 and 2, in first electrode 1 and The gap location of two electrodes, 2 adjacent position is additionally provided with floating electrode 5, and floating electrode 5 refers to the electrode that electrical signals are not added, in this way Entire touch module can be made not generate apparent latticed texture on the whole.
Further, in the specific implementation, since compensating electrode and the material of connecting bridge are metal material or electrically conducting transparent Material, metal material or transparent conductive material are destroyed in subsequent preparation process in order to prevent, its electric conductivity are influenced, in this hair In the above-mentioned touch module that bright embodiment provides, as shown in Fig. 2, further including the protection positioned at 4 top of compensating electrode 3 and connecting bridge Layer 6.
Further, in the specific implementation, in above-mentioned touch module provided in an embodiment of the present invention, the material of compensating electrode Material can be metal material or transparent conductive material.
Further, in the specific implementation, in above-mentioned touch module provided in an embodiment of the present invention, first electrode is touching Driving electrodes are controlled, second electrode is touch-control sensing electrode;Or, first electrode is touch-control sensing electrode, second electrode is touch-control drive Moving electrode.
It is provided in an embodiment of the present invention after increasing compensating electrode below by Fig. 3-touch module explanation shown in fig. 6 The touch-control sensitivity of touch module gets a promotion, and Fig. 3 is the touch module of existing not set compensating electrode, and Fig. 4 is first The adjacent position of electrode 1 and second electrode 2 is provided with the structural schematic diagram of a compensating electrode 3, and Fig. 5 is in first electrode 1 The structural schematic diagram of two compensating electrodes 3 is provided with the adjacent position of second electrode 2, Fig. 6 is in first electrode 1 and second The adjacent position of electrode 2 is provided with the structural schematic diagram of three compensating electrodes 3;It is calculated by analogue simulation, touch-control shown in Fig. 3 Capacitance of the modular structure before touch-control is 0.86369pF, and capacitance of the touch module structure shown in Fig. 4 before touch-control is 0.96917pF promotes 12.21% compared to Fig. 3, and capacitance of the touch module structure shown in fig. 5 before touch-control is 1.1226pF, 29.98% is promoted compared to Fig. 3, capacitance of the touch module structure shown in fig. 6 before touch-control is 1.2093pF, is mentioned compared to Fig. 3 Rise 40.02%.It can be seen that touch module provided in an embodiment of the present invention can with capacitance of the Lifting Modules group before touch-control, into And increase the variable quantity of capacitance before and after touch-control, to improve touch-control sensitivity, enhance the touch experience of user.
Based on the same inventive concept, the embodiment of the invention also provides a kind of display devices, including the embodiment of the present invention to mention The above-mentioned touch module supplied.The display device can be with are as follows: mobile phone, tablet computer, television set, display, laptop, number Any products or components having a display function such as photo frame, navigator.The implementation of the display device may refer to above-mentioned touch-control mould The embodiment of group, overlaps will not be repeated.
Above-mentioned touch module and display device provided in an embodiment of the present invention, including underlay substrate, and it is located at substrate base Touch control electrode layer, insulating layer and the compensating electrode layer being cascading on plate;Wherein, touch control electrode layer include it is arranged in a crossed manner and The first electrode and second electrode of mutually insulated, compensating electrode layer include multiple the adjacent of first electrode and second electrode being arranged in Compensating electrode at position, compensating electrode and the orthographic projection of adjacent first electrode and adjacent second electrode on underlay substrate Overlapping region is all had, compensating electrode is electrically connected with first electrode in overlapping region, and compensating electrode and second electrode are in crossover region Domain passes through insulating layer mutually insulated.The present invention passes through in first electrode and the setting of second electrode adjacent position and first electrode electricity Connection, the compensating electrode with second electrode mutually insulated, increase the induction region of first electrode and second electrode, are touching in this way Before control, there is first capacitor value between first electrode and second electrode, there is the second capacitor between compensating electrode and second electrode Value, i.e. capacitance before touch-control are the sum of first capacitor value and the second capacitance, compared to the prior art the capacitor before touch-control It is only the first capacitor value coupled between first electrode and second electrode, the capacitance before the application touch-control is larger, due to user The capacitance generated after touch is not much different, therefore the application can increase electricity after touch-control by the capacitance before increasing touch-control The variable quantity of capacitance, to improve the touch-control sensitivity of touch module.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies Within, then the present invention is also intended to include these modifications and variations.

Claims (10)

1. a kind of touch module, which is characterized in that be cascading including underlay substrate, and on the underlay substrate Touch control electrode layer, insulating layer and compensating electrode layer;Wherein, the touch control electrode layer includes arranged in a crossed manner and mutually insulated One electrode and second electrode, the compensating electrode layer include multiple the adjacent of the first electrode and the second electrode being arranged in Compensating electrode at position, the compensating electrode and the adjacent first electrode and the adjacent second electrode are in the lining Orthographic projection on substrate all has overlapping region, and the compensating electrode is electrically connected with the first electrode in overlapping region, institute It states compensating electrode and the second electrode and passes through the insulating layer mutually insulated in overlapping region.
2. touch module as described in claim 1, which is characterized in that the first electrode includes multiple first electrode blocks, institute Stating second electrode includes multiple second electrode blocks;
Each first electrode block is separated by the second electrode, the adjacent first electrode block in the same first electrode It is electrically connected by the connecting bridge to insulate with the second electrode;Or, each second electrode block is separated by the first electrode, together The adjacent second electrode block is electrically connected by the connecting bridge to insulate with the first electrode in one second electrode;
The compensating electrode and the connecting bridge same layer are arranged.
3. touch module as claimed in claim 2, which is characterized in that the first electrode block and adjacent each second electricity Compensating electrode is respectively provided between the block of pole.
4. touch module as claimed in claim 3, which is characterized in that the compensating electrode extends perpendicularly to described The extending direction in gap between one electrode block and the second electrode block.
5. touch module as claimed in claim 4, which is characterized in that the compensating electrode in the connecting bridge two sides is symmetrical Distribution.
6. touch module as described in claim 1, which is characterized in that the shape of each compensating electrode is consistent, size is identical.
7. touch module as described in claim 1, which is characterized in that the compensating electrode is latticed or strip.
8. touch module as described in claim 1, which is characterized in that the material of the compensating electrode is metal material or transparent Conductive material.
9. such as the described in any item touch modules of claim 1-8, which is characterized in that the first electrode is touch-control driving electricity Pole, the second electrode are touch-control sensing electrode;Or,
The first electrode is touch-control sensing electrode, and the second electrode is touch-driven electrode.
10. a kind of display device, which is characterized in that including such as described in any item touch modules of claim 1-8.
CN201910196443.5A 2019-03-15 2019-03-15 Touch module and display device Active CN109933240B (en)

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Cited By (4)

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CN111538443A (en) * 2020-06-02 2020-08-14 京东方科技集团股份有限公司 Touch display panel, preparation method thereof and touch display device
CN111665993A (en) * 2020-06-17 2020-09-15 武汉华星光电半导体显示技术有限公司 Display module and display device
CN111796723A (en) * 2019-10-11 2020-10-20 武汉华星光电半导体显示技术有限公司 Touch sensing device and touch display panel
CN113220150A (en) * 2020-01-21 2021-08-06 京东方科技集团股份有限公司 Touch module, touch display panel and display device

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