CN109933240B - Touch module and display device - Google Patents
Touch module and display device Download PDFInfo
- Publication number
- CN109933240B CN109933240B CN201910196443.5A CN201910196443A CN109933240B CN 109933240 B CN109933240 B CN 109933240B CN 201910196443 A CN201910196443 A CN 201910196443A CN 109933240 B CN109933240 B CN 109933240B
- Authority
- CN
- China
- Prior art keywords
- electrode
- touch
- compensation
- electrodes
- touch module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The invention discloses a touch module and a display device, wherein a compensation electrode which is electrically connected with a first electrode and is insulated from a second electrode is arranged at the position adjacent to the first electrode and the second electrode, so that the induction area of the first electrode and the second electrode is increased, thus, before touch control, a first capacitance value is arranged between the first electrode and the second electrode, a second capacitance value is arranged between the compensation electrode and the second electrode, that is, the capacitance value before touch is the sum of the first capacitance value and the second capacitance value, compared with the prior art in which the capacitance before touch is only the first capacitance value coupled between the first electrode and the second electrode, the capacitance value before touch is larger in the present application, because the capacitance generated after the touch of the user is not very different, the capacitance before the touch is increased, the variable quantity of the capacitance value after touch can be increased, and therefore the touch sensitivity of the touch module is improved.
Description
Technical Field
The invention relates to the technical field of touch display, in particular to a touch module and a display device.
Background
With the continuous development of touch technology, the requirements of people on touch performance are gradually increased. High-end products or applications similar to the aspect of capacitive fingerprint identification need a pattern structure with a smaller sensor pitch to realize the high-end products or applications similar to the aspect of capacitive fingerprint identification, but reducing the sensor pitch will result in the reduction of the capacitance value of the pattern itself, and then will result in the reduction of the sensitivity of the sensor, especially the influence on the aspect of capacitive fingerprint identification is significant, so that the capacitance signal amount is low and is not enough to penetrate through the thickness of a cover plate, and the touch of the sensor is insensitive and even fails, which limits the development of the capacitive fingerprint identification technology to a certain extent.
Disclosure of Invention
The embodiment of the invention provides a touch module and a display device, which are used for improving the sensitivity of the touch module.
Therefore, the embodiment of the invention provides a touch module, which comprises a substrate base plate, and a touch electrode layer, an insulating layer and a compensation electrode layer which are sequentially stacked on the substrate base plate; the touch electrode layer comprises first electrodes and second electrodes which are arranged in a crossed mode and are insulated from each other, the compensation electrode layer comprises a plurality of compensation electrodes arranged at the positions, adjacent to the first electrodes and the second electrodes, of the compensation electrodes, orthographic projections of the compensation electrodes, adjacent to the first electrodes, and adjacent to the second electrodes, on the substrate base plate respectively have overlapping areas, the compensation electrodes are electrically connected with the first electrodes in the overlapping areas, and the compensation electrodes and the second electrodes are insulated from each other in the overlapping areas through the insulating layers.
Further, in a specific implementation, in the touch module provided in an embodiment of the present invention, the first electrode includes a plurality of first electrode blocks, and the second electrode includes a plurality of second electrode blocks;
each first electrode block is separated by the second electrode, and the adjacent first electrode blocks in the same first electrode are electrically connected through a connecting bridge insulated from the second electrode; or, each second electrode block is separated by the first electrode, and the adjacent second electrode blocks in the same second electrode are electrically connected through a connecting bridge insulated from the first electrode;
the compensation electrode and the connecting bridge are arranged on the same layer.
Further, in a specific implementation, in the touch module provided in the embodiment of the present invention, a compensation electrode is disposed between the first electrode block and each of the second electrode blocks that are adjacent to the first electrode block.
Further, in a specific implementation, in the touch module provided in an embodiment of the present invention, an extending direction of the compensation electrode is perpendicular to an extending direction of a gap between the first electrode block and the second electrode block.
Further, in a specific implementation, in the touch module provided in the embodiment of the present invention, the compensation electrodes on two sides of the connecting bridge are symmetrically distributed.
Further, in a specific implementation, in the touch module provided in the embodiment of the present invention, the compensation electrodes have the same shape and the same size.
Further, in a specific implementation, in the touch module provided in the embodiment of the present invention, the compensation electrode is in a grid shape or a strip shape.
Further, in a specific implementation, in the touch module provided in an embodiment of the present invention, the compensation electrode is made of a metal material or a transparent conductive material.
Further, in a specific implementation, in the touch module provided in the embodiment of the present invention, the first electrode is a touch driving electrode, and the second electrode is a touch sensing electrode; or the like, or, alternatively,
the first electrode is a touch sensing electrode, and the second electrode is a touch driving electrode.
Correspondingly, the embodiment of the invention also provides a display device which comprises the touch module provided by any one of the above embodiments of the invention.
The embodiment of the invention has the following beneficial effects:
the touch module and the display device provided by the embodiment of the invention comprise a substrate base plate, and a touch electrode layer, an insulating layer and a compensation electrode layer which are sequentially stacked on the substrate base plate; the touch electrode layer comprises first electrodes and second electrodes which are arranged in a crossed mode and are insulated from each other, the compensation electrode layer comprises a plurality of compensation electrodes arranged at the positions, adjacent to the first electrodes and the second electrodes, of the compensation electrodes, orthographic projections of the compensation electrodes, adjacent first electrodes and adjacent second electrodes on the substrate have overlapping areas, the compensation electrodes are electrically connected with the first electrodes in the overlapping areas, and the compensation electrodes and the second electrodes are insulated from each other in the overlapping areas through insulating layers. In the invention, the compensation electrode which is electrically connected with the first electrode and is insulated from the second electrode is arranged at the position adjacent to the first electrode and the second electrode, so that the induction area of the first electrode and the second electrode is increased, a first capacitance value is arranged between the first electrode and the second electrode before touch control, and a second capacitance value is arranged between the compensation electrode and the second electrode, namely the capacitance value before touch control is the sum of the first capacitance value and the second capacitance value.
Drawings
Fig. 1 is a schematic top view of a touch module according to an embodiment of the present invention;
fig. 2 is a second schematic top view of a touch module according to an embodiment of the invention;
fig. 3 is a schematic top view of a touch module provided in the related art;
fig. 4 is a third schematic view of a top view structure of the touch module according to the embodiment of the invention;
fig. 5 is a fourth schematic view of a top view structure of the touch module according to the embodiment of the invention;
fig. 6 is a fifth schematic view of a top view structure of a touch module according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The shapes and sizes of the various elements in the drawings are not to scale and are merely intended to illustrate the invention.
Fig. 1 and 2 show a schematic top view structure of a touch module provided in an embodiment of the present invention, and fig. 1 and 2 show a schematic top view structure of the touch module provided in an embodiment of the present invention, and fig. 2 shows a schematic partial enlarged top view structure of fig. 1, which includes a substrate 10, and a touch electrode layer, an insulating layer 20 and a compensation electrode layer sequentially stacked on the substrate 10; the touch electrode layer comprises a first electrode 1 and a second electrode 2 which are arranged in a crossed mode and are insulated from each other, the compensation electrode layer comprises a plurality of compensation electrodes 3 which are arranged at adjacent positions of the first electrode 1 and the second electrode 2, orthographic projections of the compensation electrodes 3, the adjacent first electrode 1 and the adjacent second electrode 2 on the substrate base plate 10 respectively have an overlapping area, the compensation electrodes 3 are electrically connected with the first electrode 1 in the overlapping area, and the compensation electrodes 3 and the second electrode 2 are insulated from each other in the overlapping area through an insulating layer 20.
In the touch module provided by the embodiment of the invention, the compensation electrode electrically connected with the first electrode and insulated from the second electrode is arranged at the position adjacent to the first electrode and the second electrode, so that the sensing area of the first electrode and the second electrode is increased, thus, before touch control, a first capacitance value is arranged between the first electrode and the second electrode, a second capacitance value is arranged between the compensation electrode and the second electrode, that is, the capacitance value before touch is the sum of the first capacitance value and the second capacitance value, compared with the prior art in which the capacitance before touch is only the first capacitance value coupled between the first electrode and the second electrode, the capacitance value before touch is larger in the present application, because the capacitance generated after the touch of the user is not very different, the capacitance before the touch is increased, the variable quantity of the capacitance value after touch can be increased, and therefore the touch sensitivity of the touch module is improved.
Further, in a specific implementation, in the touch module provided in an embodiment of the present invention, as shown in fig. 1 and fig. 2, the first electrode 1 includes a plurality of first electrode blocks 11, the second electrode 2 includes a plurality of second electrode blocks 21, each first electrode block 11 is separated by a second electrode 2, and adjacent first electrode blocks 11 in the same first electrode 1 are electrically connected by a connecting bridge 4 insulated from the second electrode 2 (the embodiment of the present invention, fig. 1 and fig. 2 take this scheme as an example); or each second electrode block is separated by the first electrode, and the adjacent second electrode blocks in the same second electrode are electrically connected through a connecting bridge insulated from the first electrode;
the compensation electrode 3 and the connecting bridge 4 are arranged in the same layer. Therefore, the patterns of the compensation electrode 3 and the connecting bridge 4 can be formed through one-time composition process only by changing the original composition pattern when the connecting bridge 4 is formed, the process for independently preparing the compensation electrode 3 is not needed to be added, the preparation process flow can be simplified, the production cost is saved, and the production efficiency is improved.
Further, in order to further increase the sensing area between the compensation electrode and the second electrode to improve the touch sensitivity in the implementation, in the touch module provided in the embodiment of the present invention, as shown in fig. 1 and fig. 2, the compensation electrode 3 is disposed between the first electrode block 11 and each of the adjacent second electrode blocks 21. Therefore, the corresponding capacitance value can be achieved by setting the position, the number, the interval and other parameters of the compensation electrodes, the expected touch function is realized, the touch sensitivity is improved, and the user experience is enhanced.
Further, in a specific implementation, in order to increase a sensing area between the compensation electrode and the second electrode, the compensation electrode may have different arrangement modes, and in the touch module provided in the embodiment of the present invention, as shown in fig. 1 and fig. 2, an extending direction of the compensation electrode 3 may be perpendicular to an extending direction of the gap between the first electrode block 11 and the second electrode block 21.
Of course, in practical implementation, the extending direction of the compensation electrode may also be parallel to the extending direction of the gap between the first electrode block and the second electrode block, as long as the compensation electrode is electrically connected with the first electrode and insulated from the second electrode.
Further, in the touch module according to the embodiment of the present invention, as shown in fig. 1 and fig. 2, the compensation electrodes 3 on two sides of the connecting bridge 4 are symmetrically distributed; and the compensation electrodes 3 have the same shape and size. Therefore, the touch control module can be conveniently manufactured, the manufacturing process is uniform, the distribution of the induction capacitance between each compensation electrode 3 and each second electrode 2 is more uniform, and the complexity of calculation of the touch control chip connected with the touch control module is simplified.
Of course, in the implementation, those skilled in the art may also arrange the compensation electrodes on both sides of the connecting bridge not to be symmetrically distributed, or may design the compensation electrodes to be different shapes, and design their sizes, such as dimensions, to be different values.
Further, in a specific implementation, in the touch module provided in the embodiment of the present invention, the compensation electrode may be in a shape of a grid or a stripe. Specifically, the mesh shape may be formed by a patterning process, and the mesh shape may be a diamond shape, a hexagonal shape, or the like.
Further, in a specific implementation, in the touch module provided in the embodiment of the present invention, as shown in fig. 1 and fig. 2, the first electrode 1 and the second electrode 2 may be in a grid shape.
Further, in the specific implementation, because the gap between the first electrode and the second electrode should reach a certain distance based on the requirements of touch precision, sensing strength, and the like, and the transmittance of light is different between the area with the first electrode or the second electrode and the area without the first electrode and the second electrode (the gap between the first electrode and the second electrode), which causes the user to see a shallow grid-shaped texture, in the touch module provided in the embodiment of the present invention, as shown in fig. 1 and 2, the floating electrode 5 is further disposed at the gap between the adjacent positions of the first electrode 1 and the second electrode 2, and the floating electrode 5 is an electrode without loading an electric signal, so that no obvious grid-shaped texture is generated on the whole touch module.
Further, in the specific implementation, since the compensation electrode and the connection bridge are made of a metal material or a transparent conductive material, in order to prevent the metal material or the transparent conductive material from being damaged in the subsequent manufacturing process and affecting the conductivity thereof, as shown in fig. 2, the touch module provided in the embodiment of the present invention further includes a protection layer 6 located above the compensation electrode 3 and the connection bridge 4.
Further, in a specific implementation, in the touch module provided in the embodiment of the present invention, the compensation electrode may be made of a metal material or a transparent conductive material.
Further, in a specific implementation, in the touch module provided in the embodiment of the present invention, the first electrode is a touch driving electrode, and the second electrode is a touch sensing electrode; or the first electrode is a touch sensing electrode and the second electrode is a touch driving electrode.
Fig. 3 is a schematic diagram illustrating that after compensation electrodes are added to the touch module shown in fig. 3-6, the touch sensitivity of the touch module according to the embodiment of the present invention is improved, fig. 3 is a conventional touch module without compensation electrodes, fig. 4 is a schematic structural diagram in which one compensation electrode 3 is disposed at an adjacent position of the first electrode 1 and the second electrode 2, fig. 5 is a schematic structural diagram in which two compensation electrodes 3 are disposed at an adjacent position of the first electrode 1 and the second electrode 2, and fig. 6 is a schematic structural diagram in which three compensation electrodes 3 are disposed at an adjacent position of the first electrode 1 and the second electrode 2; through simulation calculation, the capacitance value of the touch module structure shown in fig. 3 before touch is 0.86369pF, the capacitance value of the touch module structure shown in fig. 4 before touch is 0.96917pF, 12.21% is improved compared with fig. 3, the capacitance value of the touch module structure shown in fig. 5 before touch is 1.1226pF, 29.98% is improved compared with fig. 3, and the capacitance value of the touch module structure shown in fig. 6 before touch is 1.2093pF, and 40.02% is improved compared with fig. 3. Therefore, the touch module provided by the embodiment of the invention can improve the capacitance value of the module before touch, and further increase the variation of the capacitance value before and after touch, so that the touch sensitivity is improved, and the touch experience of a user is enhanced.
Based on the same inventive concept, the embodiment of the invention further provides a display device, which comprises the touch module provided by the embodiment of the invention. The display device may be: any product or component with a 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 implementation of the display device can be seen in the above embodiments of the touch module, and repeated descriptions are omitted.
The touch module and the display device provided by the embodiment of the invention comprise a substrate base plate, and a touch electrode layer, an insulating layer and a compensation electrode layer which are sequentially stacked on the substrate base plate; the touch electrode layer comprises first electrodes and second electrodes which are arranged in a crossed mode and are insulated from each other, the compensation electrode layer comprises a plurality of compensation electrodes arranged at the adjacent positions of the first electrodes and the second electrodes, the orthographic projections of the compensation electrodes, the adjacent first electrodes and the adjacent second electrodes on the substrate have overlapping areas, the compensation electrodes are electrically connected with the first electrodes in the overlapping areas, and the compensation electrodes and the second electrodes are insulated from each other in the overlapping areas through insulating layers. In the invention, the compensation electrode which is electrically connected with the first electrode and is insulated from the second electrode is arranged at the position adjacent to the first electrode and the second electrode, so that the induction area of the first electrode and the second electrode is increased, a first capacitance value is arranged between the first electrode and the second electrode before touch control, and a second capacitance value is arranged between the compensation electrode and the second electrode, namely the capacitance value before touch control is the sum of the first capacitance value and the second capacitance value.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A touch module is characterized by comprising a substrate base plate, and a touch electrode layer, an insulating layer and a compensation electrode layer which are sequentially stacked on the substrate base plate; the touch electrode layer comprises first electrodes and second electrodes which are arranged in a crossed mode and are insulated from each other, the compensation electrode layer comprises a plurality of compensation electrodes arranged at the positions, adjacent to the first electrodes and the second electrodes, of the compensation electrodes, orthographic projections of the compensation electrodes, adjacent to the first electrodes, and adjacent to the second electrodes, on the substrate base plate respectively have overlapping areas, the compensation electrodes are electrically connected with the first electrodes in the overlapping areas, and the compensation electrodes and the second electrodes are insulated from each other in the overlapping areas through the insulating layers.
2. The touch module of claim 1, wherein the first electrode comprises a plurality of first electrode blocks, and the second electrode comprises a plurality of second electrode blocks;
each first electrode block is separated by the second electrode, and the adjacent first electrode blocks in the same first electrode are electrically connected through a connecting bridge insulated from the second electrode; or, each second electrode block is separated by the first electrode, and the adjacent second electrode blocks in the same second electrode are electrically connected through a connecting bridge insulated from the first electrode;
the compensation electrode and the connecting bridge are arranged on the same layer.
3. The touch module of claim 2, wherein a compensation electrode is disposed between the first electrode block and each of the second electrode blocks.
4. The touch module of claim 3, wherein the extension direction of the compensation electrode is perpendicular to the extension direction of the gap between the first electrode block and the second electrode block.
5. The touch module of claim 4, wherein the compensation electrodes on both sides of the connecting bridge are symmetrically distributed.
6. The touch module of claim 1, wherein the compensation electrodes have the same shape and size.
7. The touch module of claim 1, wherein the compensation electrode is in a grid or stripe shape.
8. The touch module of claim 1, wherein the compensation electrode is made of a metal material or a transparent conductive material.
9. The touch module of any of claims 1-8, wherein the first electrode is a touch driving electrode and the second electrode is a touch sensing electrode; or the like, or a combination thereof,
the first electrode is a touch sensing electrode, and the second electrode is a touch driving electrode.
10. A display device comprising the touch module according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910196443.5A CN109933240B (en) | 2019-03-15 | 2019-03-15 | Touch module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910196443.5A CN109933240B (en) | 2019-03-15 | 2019-03-15 | Touch module and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109933240A CN109933240A (en) | 2019-06-25 |
| CN109933240B true CN109933240B (en) | 2022-07-08 |
Family
ID=66987165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910196443.5A Active CN109933240B (en) | 2019-03-15 | 2019-03-15 | Touch module and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109933240B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111796723B (en) * | 2019-10-11 | 2023-06-02 | 武汉华星光电半导体显示技术有限公司 | Touch sensing device and touch display panel |
| CN113220150B (en) * | 2020-01-21 | 2023-09-26 | 京东方科技集团股份有限公司 | Touch module, touch display panel and display device |
| 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 |
| CN111665993B (en) * | 2020-06-17 | 2021-09-03 | 武汉华星光电半导体显示技术有限公司 | Display module and display device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101566895A (en) * | 2008-04-25 | 2009-10-28 | 苹果公司 | Brick layout and stackup for touch screen |
| CN102364421A (en) * | 2011-10-26 | 2012-02-29 | 苏州瀚瑞微电子有限公司 | Method for compensating inductive capacitance |
| CN102622130A (en) * | 2012-02-29 | 2012-08-01 | 苏州瀚瑞微电子有限公司 | Wiring structure of monolayer information technology outsourcing (ITO) |
| CN203102243U (en) * | 2013-02-28 | 2013-07-31 | 上海艾为电子技术有限公司 | Coupling electrode group, touchpad and touch display device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6527052B2 (en) * | 2015-08-28 | 2019-06-05 | 富士フイルム株式会社 | Transfer film, electrode protective film of capacitance type input device, laminate, method of manufacturing laminate, and capacitance type input device |
-
2019
- 2019-03-15 CN CN201910196443.5A patent/CN109933240B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101566895A (en) * | 2008-04-25 | 2009-10-28 | 苹果公司 | Brick layout and stackup for touch screen |
| CN102364421A (en) * | 2011-10-26 | 2012-02-29 | 苏州瀚瑞微电子有限公司 | Method for compensating inductive capacitance |
| CN102622130A (en) * | 2012-02-29 | 2012-08-01 | 苏州瀚瑞微电子有限公司 | Wiring structure of monolayer information technology outsourcing (ITO) |
| CN203102243U (en) * | 2013-02-28 | 2013-07-31 | 上海艾为电子技术有限公司 | Coupling electrode group, touchpad and touch display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109933240A (en) | 2019-06-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109933240B (en) | Touch module and display device | |
| CN108021288B (en) | Touch panel, manufacturing method thereof and display device | |
| CN106610749B (en) | Touch control display apparatus and its driving method | |
| CN107515697B (en) | Metal grid, touch display device and method for improving Moire of touch display device | |
| CN109871157B (en) | Touch display panel and touch display device | |
| CN106201145B (en) | A kind of touch screen, its production method and display device | |
| CN109388294B (en) | Touch panel, manufacturing method thereof and touch display device | |
| CN110502152B (en) | Touch panel, touch display panel and touch display device | |
| CN108388368B (en) | Touch display panel and touch display device | |
| CN101840292A (en) | Capacitance type touch control circuit pattern and manufacturing method thereof | |
| CN106843616A (en) | A kind of touch base plate and preparation method thereof, touch control display apparatus | |
| CN203535592U (en) | Touch control panel | |
| US8304675B2 (en) | Matrix touch panel | |
| CN108874218B (en) | Touch substrate, touch positioning method thereof and capacitive touch screen | |
| CN111475046B (en) | Touch substrate, display panel and touch display device | |
| CN110764657A (en) | Touch layer, touch module and electronic equipment | |
| US20210357078A1 (en) | Touch panel, manufacturing method thereof and display device | |
| CN107256106B (en) | Array substrate, liquid crystal display panel, touch display device and touch driving method | |
| TW201342170A (en) | Capacitive touch panel | |
| CN205427796U (en) | Electronic equipment with pressure detection function | |
| CN104123050B (en) | Touch panel | |
| CN102929420B (en) | Touch panel structure provided manufacture method | |
| CN113220159A (en) | Touch panel and touch display device | |
| CN107688411A (en) | Substrate and its method for sensing, contact panel and display device | |
| CN204595807U (en) | Touch-screen and display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |