CN113010051A - Capacitance sensing module, display panel and display device - Google Patents
Capacitance sensing module, display panel and display device Download PDFInfo
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- CN113010051A CN113010051A CN202110242174.9A CN202110242174A CN113010051A CN 113010051 A CN113010051 A CN 113010051A CN 202110242174 A CN202110242174 A CN 202110242174A CN 113010051 A CN113010051 A CN 113010051A
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- 239000000758 substrate Substances 0.000 claims abstract description 60
- 239000004020 conductor Substances 0.000 claims description 7
- 238000002834 transmittance Methods 0.000 abstract description 27
- 238000000034 method Methods 0.000 description 7
- 230000009471 action Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
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- 230000006698 induction Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 230000000007 visual effect Effects 0.000 description 2
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- 239000004973 liquid crystal related substance Substances 0.000 description 1
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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
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04112—Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material
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Abstract
The invention discloses a capacitance sensing module, a display panel and a display device. This capacitance sensing module includes: a substrate comprising a first region and a second region, the second region at least partially surrounding the first region; a first electrode, a first conducting wire, an orthographic projection in the substrate direction, wherein the first conducting wire and the first electrode are at least partially overlapped, and the first electrode and the first conducting wire are positioned in the first area; the second lead and the virtual electrode are at least partially overlapped in an orthographic projection in the substrate direction, the virtual electrode and the second lead are located in the second area, the second lead comprises a first line segment, and the first line segment connects the first lead with a driving circuit. According to the capacitive sensing module, the display panel and the display device provided by the embodiment of the invention, the transmittances of different areas are consistent as much as possible, and the display performance is improved.
Description
Technical Field
The invention belongs to the technical field of touch devices, and particularly relates to a capacitance sensing module, a display panel and a display device.
Background
In an existing electronic device, a capacitive sensing device is generally disposed in a touch fingerprint identification device such as a fingerprint lock and a touch lock used in the fields of security, aviation, and the like, or a display device having a touch function such as a mobile phone and a tablet. Compared with the non-capacitive sensing area, the area corresponding to the capacitive sensing area in the panel has a relatively obvious light transmittance difference, so that a large difference is generated visually, and the display effect is further influenced.
Disclosure of Invention
The invention aims to: so that the transmittances of different areas are as consistent as possible, and the display performance is improved.
In a first aspect, to solve the above technical problem, an embodiment of the present invention provides a capacitive sensing module, including: a substrate comprising a first region and a second region, the second region at least partially surrounding the first region; a first electrode, a first conducting wire, an orthographic projection in the substrate direction, wherein the first conducting wire and the first electrode are at least partially overlapped, and the first electrode and the first conducting wire are positioned in the first area; the second lead and the virtual electrode are at least partially overlapped in an orthographic projection in the substrate direction, the virtual electrode and the second lead are located in the second area, the second lead comprises a first line segment, and the first line segment connects the first lead with a driving circuit.
In a second aspect, an embodiment of the present invention further provides a display panel, including a display module and a capacitance sensing module, where the capacitance sensing module is located above the display module, the capacitance sensing module is the capacitance sensing module described in the above, the display module includes a display area, the first area and the second area are located in the display area, and a side of the substrate where the first electrode is located faces the display module.
In a third aspect, an embodiment of the present invention further provides a display device, including the display panel described above.
By adopting the technical scheme of the embodiment of the invention, the first area has capacitance induction by arranging the first electrode and the first lead in the first area, and the light transmittances in the first area and the second area tend to be consistent as much as possible by arranging the virtual electrode and the second lead in the second area arranged around the first area, so that the influence on the visual effect caused by the large difference of the light transmittances in the first area and the second area is avoided. On this basis, because the first wire that is located first region needs to realize through signal line and drive circuit and is connected, just can realize the capacitive sensing of first region, and the signal line of connecting can be regional via the second, in order to avoid setting up of signal line to lead to the luminousness in second region and the luminousness in first region to produce the difference, so first line section through multiplexing in the second wire is as the partly in order to connect first wire and drive circuit of signal line, thereby when not influencing first region and realizing the capacitive sensing, can guarantee the uniformity of the luminousness in first region and second region, guarantee better display effect.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a top view of a capacitive sensing module according to an embodiment of the invention;
FIG. 2 is an enlarged view of a portion of the capacitive sensing module provided in FIG. 1;
FIG. 3 is an enlarged view of a portion A of FIG. 2;
FIG. 4 is a cross-sectional view of the MM of FIG. 3;
FIG. 5 is a partial enlarged view of portion B of FIG. 2;
FIG. 6 is a partial cross-sectional view of one embodiment of the capacitance sensing module NN of FIG. 5;
FIG. 7 is a partial cross-sectional view of another capacitance sensing module NN of FIG. 5;
FIG. 8 is a schematic diagram of a first signal line of FIG. 2;
fig. 9 is a top view of a capacitive sensing module according to another embodiment of the invention;
FIG. 10 is an enlarged view of a portion of the capacitive sensing module provided in FIG. 9;
FIG. 11 is a top view of a capacitive sensing module according to yet another embodiment of the present invention;
FIG. 12 is an enlarged view of a portion of the capacitive sensing module provided in FIG. 11;
FIG. 13 is a top view of a capacitive sensing module according to yet another embodiment of the present invention;
FIG. 14 is an enlarged view of a portion of the capacitive sensing module provided in FIG. 13;
FIG. 15 is a top view of a display panel according to an embodiment of the present invention;
fig. 16 is a schematic cross-sectional view of the display panel in fig. 15.
In the drawings:
1-a substrate; 11-a second region; 12-a first region; 13-a binding region; 2-a virtual electrode; 3-a second conductive line; 31-a third sub-conductor; 311-a first line segment; 32-a fourth sub-conductor; 4-a first electrode; 5-a first wire; 51-a first sub-conductor; 52-a second sub-conductor; 6-a signal line; 61-a first signal line; 611-a third line segment; 612-a second line segment; 7-a drive circuit; 8-a display panel; 81-a display module; 82-a capacitive sensing module; 9-a rigid transparent substrate; d1-display area; d2-non-display area; w-a first direction; l-a second direction.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
For better understanding of the present invention, the touch device, the electronic device and the method for manufacturing the touch device according to the embodiments of the present invention are described in detail below with reference to fig. 1 to 8.
Referring to fig. 1 and fig. 2, fig. 1 shows a top view of a capacitive sensing module according to an embodiment of the present invention, and fig. 2 shows a partial enlarged view of the capacitive sensing module in fig. 1, where the capacitive sensing module can be applied to the fields of security, aerospace, production, life, and the like, such as a fingerprint lock with touch control and fingerprint identification functions, a mobile phone with display, touch control or fingerprint identification functions, a computer, and the like, which are not limited herein.
Referring to fig. 1 to 7, the capacitive sensing module includes a substrate 1, the substrate 1 includes a first region 12 and a second region 11, and the second region 11 at least partially surrounds the first region 12; a first electrode 4, a first conducting wire 5, and an orthographic projection in the direction of the substrate 1, wherein the first conducting wire 5 and the first electrode 4 are at least partially overlapped (as shown in fig. 6 and 7), and the first electrode 4 and the first conducting wire 5 are positioned in a first area 12; the second conductive line 3 and the dummy electrode 2 at least partially overlap (see fig. 5), the dummy electrode 2 and the second conductive line 3 are located in the second region 11, and the second conductive line 3 includes a first line segment 311, and the first line segment 311 connects the first conductive line 5 to the driving circuit 7. The first line segment 311 in the second conducting line 3 is used as a part of the signal line 6 for connecting the first conducting line 5 with the driving circuit 7, so that the consistency of the light transmittance in the first area 12 and the second area 11 is ensured to be higher while the capacitance signal of the first area 12 is sensed.
Specifically, the first electrode 4 and the first wire 5 are arranged in the first area 12, and the light transmittance in the first area 12 and the second area 11 is made to be consistent as much as possible by arranging the dummy electrode 2 and the second wire 3 in the second area 11 arranged around the first area 12, so that the visual effect is prevented from being influenced by a large difference in light transmittance between the first area 12 and the second area 11. On the basis, in order to enable the position of the first area 12 to generate capacitance induction to realize the required functions of touch control, fingerprint identification and the like, the first electrode 4 and the first conducting wire 5 are required to be electrically connected with the driving circuit 7 located in the binding area 13. That is, the plurality of first wires 5 located in the first area 12 are electrically connected to the driving circuit 7 through the plurality of signal lines 6, after the first wires 5 are connected to the driving circuit 7 through the signal lines 6, the distance between the first electrodes 4 is changed by touching or pressing to generate corresponding capacitance sensing signals, and the capacitance sensing signals are transmitted to the driving circuit 7 through the connected signal lines 6 for identification and judgment, so as to realize capacitance sensing of the first area 12. When the signal line 6 connects the first conducting wire 5 with the driving circuit 7, a portion of the signal line 6 passes through the second region 11, and a portion of the signal line 6 passing through the second region 11 is a non-transparent metal line, so that the metal line shields the corresponding second region 11, and the light transmittance of the portion is reduced, resulting in a difference between the light transmittance of the second region 11 and the light transmittance of the first region 12. Therefore, in order to avoid the influence of the signal line 6 passing through the second region 11 on the light transmittance of the second region 11, the first line segment 311 in the second conductive line 3 is multiplexed as a part of the signal line 6 to connect the first conductive line 5 with the driver, so that the signal connection between the first region 12 and the external signal can be realized without additionally adding a structure affecting the light transmittance to the second region 11, and meanwhile, the consistency of the light transmittance of the first region 12 and the second region 11 can be ensured, and a better display effect can be ensured.
It is understood that, for the first electrode 4 and the first conducting wire 5 disposed in the first area 12, referring to fig. 7, the first electrode 4 and the first conducting wire 5 may be respectively located at two sides of the substrate 1 facing away from each other in the thickness direction, and when the first electrode 4 and the first conducting wire 5 need to be connected, the first electrode 4 and the first conducting wire 5 may be electrically connected by providing a through hole on the substrate 1, or, referring to fig. 6, the first electrode 4 and the first conducting wire 5 may be located at the same side of the substrate 1 in the thickness direction, as long as the first electrode 4 and the first conducting wire 5 at least partially overlap in the orthographic projection of the substrate 1, and are not particularly limited herein. Similarly, the dummy electrodes 2 and the second wires 3 disposed in the second region 11 may also be disposed on the same side or both sides of the substrate 1 in the thickness direction, so that the dummy electrodes 2 and the second wires 3 at least partially overlap in the orthographic projection of the substrate 1, and will not be described herein again.
Optionally, for the first electrode 4 disposed in the first region 12 and the virtual electrode 2 disposed in the second region 11, in order to avoid the light transmittance of the corresponding region being reduced by the disposed electrodes, the first electrode 4 and the virtual electrode 2 are both transparent electrodes, and the transparent electrodes are composed of a plurality of transparent electrode blocks, so that the transparent electrode blocks are respectively arranged in the first region 12 and the second region 11 in an array manner.
The following description will take as an example that the first electrode 4 and the first wire 5 are located on the same side of the substrate 1 in the thickness direction, the dummy electrode 2 and the second wire 3 are located on the same side of the substrate 1 in the thickness direction, and the first electrode 4 and the dummy electrode 2 are located on the same side of the substrate 1 in the thickness direction.
In a specific embodiment, referring to fig. 1 and 2, the first conductive line 5 includes a first sub-conductive line 51 and a second sub-conductive line 52, the first sub-conductive line 51 is connected to the first electrode 4, the first sub-conductive line 51 is arranged along a first direction W and extends along a second direction L, the first direction W crosses the second direction L (referring to fig. 1, the first direction W is a direction indicated by an arrow W, the second direction L is a direction indicated by an arrow L, and the first direction W and the second direction L have no positive and negative components, the arrows have no actual directivity, and only indicate the first direction W and the second direction L, the first direction W includes a pointing direction of the arrow W and an opposite direction, and the second direction L includes a pointing direction of the arrow L and an opposite direction); the second sub-conductive lines 52 are arranged along the second direction L and extend along the first direction W, and the first segments 311 connect at least one of the first and second sub-conductive lines 51 and 52 with the driving circuit 7. In order to realize touch sensing in the first area 12, the first sub-wires 51 and the second sub-wires 52 need to be connected to the driving circuit 7 through the signal lines 6, each signal line 6 correspondingly connects each first sub-wire 51 to the driving circuit 7, and each second sub-wire 52 is connected to the driving circuit 7, so that sensing signals in the first area 12 are fed back to the driving circuit 7 through the signal lines 6, and functions of touch sensing, fingerprint identification and the like of the first area 12 are realized.
Referring to fig. 2, 10 and 12, the signal line 6 includes a plurality of first signal lines 61 and a plurality of second signal lines 62, each of the first signal lines 61 connects the first sub-conductive line 51 to the driving circuit 7, each of the second signal lines 62 connects the second sub-conductive line 52 to the driving circuit 7, and the first signal lines 61 and/or the second signal lines 62 at least include a first line segment 311, that is, at least one of the first signal lines 61 and the second signal lines 62 multiplexes the first line segment 311 in the second region 11 as a signal connection line, so as to prevent the signal line 6 of an additional metal from shielding the second region 11 and affecting the light transmission performance when the signal line 6 passes through the second region 11.
Referring to fig. 2, 4 and 6, the second conductive line 3 includes a third sub-conductive line 31 and a fourth sub-conductive line 32, the third sub-conductive line 31 being arranged along the first direction W and extending along the second direction L; the fourth sub-conductive lines 32 are arranged along the second direction L and extend along the first direction W, and the first segment 311 is at least one of a part of the third sub-conductive line 31 and the fourth sub-conductive line 32. The third sub-wires 31 and the fourth sub-wires 32 are respectively arranged in the second region 11 in an array, the third sub-wires 31 and the fourth sub-wires 32 are not connected with each other, so that the third sub-wires 31 and the fourth sub-wires 32 are arranged in the second region 11 in the same array arrangement mode as the first region 12, and the third sub-wires 31, the fourth sub-wires 32 and the electrode blocks which are arranged in the same array mode are used for enabling the light transmittance in the second region 11 to be closer to that of the first region 12, and avoiding that the light transmittance difference of the second region 11 adjacent to the first region 12 is larger when the first electrodes 4 and the first wires 5 which can generate capacitance signals are arranged only in the first region 12.
Alternatively, for the third sub-wire 31 and the fourth sub-wire 32 arranged in the array in the second region 11, in order to make the light transmittance of the second region 11 closer to that of the first region 12, in the orthogonal projection in the direction of the substrate 1, the line width of the first wire 5 is the same as the line width of the second wire 3. That is, the line widths of the first sub-conductive line 51, the second sub-conductive line 52, the third sub-conductive line 31 and the fourth sub-conductive line 32 in the orthographic projection of the substrate 1 are all set to be the same, and all the line widths are made of the same conductive material, so that the light transmittance of the second region 11 is adjusted to be closer to the light transmittance of the first region 12.
When the first conductive line 5 is disposed in the first region 12 and the second conductive line 3 is disposed in the second region 11, when the first conductive line 5 is connected to the driving circuit 7 through the signal line 6, the multiplexed first line segment 311 is the third sub-conductive line 31 or the fourth sub-conductive line 32, and the first line segment 311 is connected to the driving circuit 7 or the second sub-conductive line 52, and there are different cases depending on the positional relationship among the first region 12, the second region 11 and the bonding region 13 for bonding and connecting the driving circuit 7.
In some specific embodiments, referring to fig. 1 and 2, the driving circuit 7 is located on a side of the substrate 1 facing the first electrode 4, the substrate 1 includes a bonding region 13, the bonding region 13 is located on a side of the first region 12 away from the second region 11 in the first direction W, and the driving circuit 7 is bonded to the bonding region 13. In such an arrangement of the first region 12 and the second region 11, the second region 11 is provided with the first region 12 on a side close to the bonding region 13 in the first direction W, so when the second sub-conductive line 52 is connected to the driving circuit 7 through the second signal line 62, the second signal line 62 does not pass through the second region 11, and the second signal line 62 does not include the first line segment 311. When the first sub-conductive line 51 is connected to the driving circuit 7 through the first signal line 61, at least a portion of the first signal line 61 needs to pass through the second region 11, the first signal line 61 extending from the first region 12 at least includes the first line segment 311, that is, the first signal line 61 multiplexes the first line segment 311 in the second region 11, and when the first sub-conductive line 51 is connected to the driving circuit 7 through the first signal line 61, a structure for additionally shielding the second region 11 is not added through multiplexing the first line segment 311 when the first signal line 61 passes through the second region 11, so as to avoid damaging the uniformity of light transmittance of the first region 12 and the second region 11.
Referring to fig. 2, the arrangement that the line width of the first line segment 311 is wider than those of other conductive lines in the drawing is merely to distinguish the first line segment 311 from the first sub-conductive line 51, the third sub-conductive line 31, etc. in a bold type, and does not represent the actual line width, and the bold of the first line segment 311 in the following figures is also the purpose, and will not be separately emphasized in the following.
As for the first segment 311 included in the first signal line 61 and located in the second region 11, referring to fig. 2, the first segment 61 connects the first sub-conductive line 51 with the driving circuit 7, and the first segment 311 may be the third sub-conductive line 31. In the extending direction of the first sub-conductive lines 51 along the first direction W, the third sub-conductive lines 31 located on the same straight line with the corresponding first sub-conductive lines 51 are set as the first line segments 311, and by multiplexing the setting in which the third sub-conductive lines 31 of the closest distance are set as the first line segments 311, the total length of the signal lines 6 located in the first region 12 and the second region 11 is shortened to improve the light transmittance.
Referring to fig. 2 and 8, taking the first line segment 311 as an example of a part of the first signal line 61, the first signal line 61 further includes a second line segment 612 and a third line segment 611 connected to two ends of the first line segment 311 in addition to the first line segment 311 located in the second area 11 and multiplexing part of the third sub-conductive line 31, the second line segment 612 is led out from one end of the first line segment 311 located in the second area 11 and enters the first area 12, the second line segment 612 connects the first line segment 311 with the first sub-conductive line 51 in the first area 12, and the third line segment 611 is led out from the other end of the first line segment 311 located in the second area 12 and enters the bonding area 13 and is connected with the driving circuit 7, so that the first signal line 61 electrically connects the first sub-conductive line 51 with the driving circuit 7. In the adjacent first region 12 and second region 11, there may be a gap between the first sub-conductive line 51, second sub-conductive line 52 and the edge of the first region 12, and there may be a gap between the third sub-conductive line 31, fourth sub-conductive line 32 and the edge of the second region 11, that is, there is a distance between the first line segment 311 and any one of the first sub-conductive line 51 and second sub-conductive line 52. The first segments 311 in the first and second regions 12 and 11 are connected to the first electrode 4 by the second segments 612. The second line segment 612 is set as the shortest line segment for connecting the first line segment 311 and the first electrode 4, so as to minimally add additional metal wires and avoid the large difference of light transmittance at different positions.
Alternatively, the density of the first conductive lines arranged in the first region 12 is the same as the density of the second conductive lines 3 arranged in the second region 11. So that the light transmittance in the first region 12 and the second region 11 more tends to be uniform.
Alternatively, with reference to fig. 9 and 10, for the first segment 311 included in the first signal line 61 and located in the second region 11, the first segment 311 may be formed by combining the third sub-conductive lines 31 and the fourth sub-conductive lines 32, the first segment 311 connects the first sub-conductive lines 51 with the driving circuit 7, the third sub-conductive lines 31 extending along the second direction L are arranged at intervals, and the third sub-conductive lines 31 and the intersecting portions of the fourth sub-conductive lines 32 are combined to form the first segment 311. In the first segment 311 formed by combining the third sub-wires 31 and the fourth sub-wires 32 to form a bent structure, in order to facilitate that different first sub-wires 51 can be connected to the driving circuit 7 through the bent first segment 311, in the bent first segment 311, if more than two third sub-wires 31 arranged at intervals are used, the adjacent disconnected third sub-wires 31 are connected through an auxiliary segment to achieve signal communication, and the other third sub-wires 31 arranged at intervals do not generate signal interference to signals.
In another embodiment, referring to fig. 11, 12, 13 and 14, the driving circuit 7 is located on a side of the substrate 1 away from the first electrode 4 in the first direction W, and the second region 11 is located between the first region 12 and the bonding region 13, in such an arrangement of the first region 12 and the second region 11, when the first sub-conductive line 51 is connected to the driving circuit 7 through the first signal line 61 and the second sub-conductive line 52 is connected to the driving circuit 7 through the second signal line 62, both the first signal line 61 and the second signal line 62 may pass through the second region 11, so as to avoid occupying too much frame space through the winding of the outer frame, which is not favorable for the implementation of the wiring and the narrow frame. When at least one of the first signal line 61 and the second signal line 62 passes through the second area 11, the corresponding signal line 6 includes the first line segment 311, so as to realize signal connection by multiplexing the first line segment 311 in the second area 11, and at the same time, avoid the second area 11 from being blocked by adding an additional structure to the second area 11, and ensure consistency of light transmittance of the first area 12 and the second area 11.
Referring to fig. 11 and 12, the first line segment 311 connects the first sub-conductive line 51 with the driving circuit 7, the third sub-conductive lines 31 are a plurality of line segments arranged at intervals in the second direction L, the first line segment 311 is formed by connecting a plurality of third sub-conductive lines 31 arranged at intervals in the second direction L, or the third sub-conductive line 31 is a line segment extending in the second direction L, and the first line segment 311 is the third sub-conductive line 31.
Referring to fig. 13 and 14, the second sub-conductive line 52 is connected to the driving circuit 7 by a first line segment 311, the first line segment 311 is the fourth sub-conductive line 32, and the third sub-conductive lines 31 extending along the second direction L are a plurality of line segments arranged at intervals. At this time, the first signal line 61 connecting the first sub-conductive line 51 and the driving circuit 7 may run through an outer frame, and the first line segment 311 of the second region 11 may be multiplexed, which is not specifically limited herein. On the basis of utilizing the internal wiring of the second area 11 to not influence the light transmittance of the first area 12 and the second area 11, the signal line 6 does not occupy too much space of the frame, which is beneficial to the realization of the narrow frame.
It should be emphasized here that no matter what manner is adopted to connect the first electrode 4 with the driving circuit 7 through the signal line 6, and the specific implementation manner that the first line segment 311 is connected with the first sub-wire 51 and/or the second sub-wire 52 is multiplexed, corresponding selection may be made according to different matching forms of the first area 12 and the second area 11, or selection may be made according to the width of the frame, when a narrow frame needs to be implemented and external wiring needs to be avoided as much as possible, external wiring may be reduced while the light transmittance areas of the first area 12 and the second area 11 are ensured to be consistent through internal wiring, or corresponding setting may also be performed according to other situations, which is not specifically limited herein.
Alternatively, referring to fig. 4 and 6, when the first electrode 4 and the dummy electrode 2 are both located on the same side of the substrate 1 in the thickness direction, in order to facilitate connection of the first electrode 4 to the driving circuit 7 located in the bonding region 13 on the substrate 1 through the signal line 6, the first sub-wire 51 and the third sub-wire 31 are arranged in the same layer, and the second sub-wire 52 and the fourth sub-wire 32 are arranged in the same layer. And when the first segment 311 located at an upper layer of the substrate 1 is connected to the driving circuit 7 on the substrate 1 through the signal line 6, the signal line 6 may be guided onto the substrate 1 through the replacement line hole provided on the corresponding layer where the first sub-conductive line 51 and the second sub-conductive line 52 are provided.
Optionally, referring to fig. 15 and 16, the capacitance sensing module 82 further includes a rigid transparent substrate 9, the rigid transparent substrate 9 is adhesively connected to the substrate 1, and the first electrode 4, the dummy electrode 2, and the driving circuit 7 located in the bonding region 13 are located between the substrate 1 and the rigid transparent substrate 9. Through the setting of rigid transparent base plate 9, not only can play the guard action to being located first electrode 4 between rigid transparent base plate 9 and the substrate 1, virtual electrode 2 etc. avoid impaired, and rigid transparent base plate 9 can regard as the backup pad moreover, when being connected to corresponding electronic equipment with electric capacity response module 82, be connected to corresponding display module assembly 81 through rigid transparent base plate 9 on, can guarantee better linkage effect, difficult production fold is out of shape.
It is understood that the substrate 1 in the capacitance sensing module 82 may be a flexible substrate 1 or a rigid substrate, and is not limited in particular. And, when the substrate 1 is a rigid substrate, in order to enable the first electrode 4 located below to generate a capacitance signal, the thickness of the rigid substrate is less than or equal to 0.3mm, so that the rigid substrate can be sensed by touching the side of the rigid substrate away from the first electrode 4 to form a corresponding capacitance.
Referring to fig. 15 and 16, the Display panel 8 may be an Organic Light Emitting Diode (OLED) Display panel or a Liquid Crystal Display (LCD) Display panel, which is not limited herein. The display panel 8 includes a display module 81 and a capacitance sensing module 82, the capacitance sensing module 82 is located above the display module 81, the capacitance sensing module 82 is the capacitance sensing module 82 described in any one of the above embodiments, the display module 81 includes a display area D1 and a non-display area D2 at least partially surrounding the display area D1, the first area 12 and the second area 11 are located in the display area D1, the binding area 13 is located in the non-display area D2, and one side of the substrate 1 provided with the first electrode 4 faces the display module 82. Can make the capacitance sensing module 82 when integrated in the display area D1 that display module 81 corresponds through this kind of setting, the capacitance sensing can penetrate display module 81's apron, realizes fingerprint identification, touch-control function to the setting of capacitance sensing module 82 makes the luminousness of the different positions of display area D1 tend to unanimously, and the influence of minimalizing reduction to display area D1 light transmissivity can.
The present application further provides a display device, which includes the display panel 8 described above, and the display device may be a mobile phone, a computer, etc. with touch control and fingerprint identification functions, which is not limited herein.
The foregoing description shows and describes several preferred embodiments of the present application, but as aforementioned, it is to be understood that the application is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the application, which is to be protected by the claims appended hereto.
Claims (15)
1. A capacitive sensing module, comprising:
a substrate comprising a first region and a second region, the second region at least partially surrounding the first region;
a first electrode, a first conducting wire, an orthographic projection in the substrate direction, wherein the first conducting wire and the first electrode are at least partially overlapped, and the first electrode and the first conducting wire are positioned in the first area;
a dummy electrode, a second conductive line, an orthographic projection in the substrate direction, the second conductive line and the dummy electrode at least partially overlapping, the dummy electrode and the second conductive line being located in the second area,
the second wire includes a first wire segment connecting the first wire with a driving circuit.
2. The capacitive sensing module of claim 1, wherein the first conductive line comprises:
a first sub-wire connected to the first electrode, the first sub-wire being arranged in a first direction and extending in a second direction, the first direction crossing the second direction;
a second sub-conductive line arranged along the second direction and extending along the first direction,
the first line segment connects at least one of the first sub-conductor and the second sub-conductor with the driving circuit.
3. The capacitive sensing module of claim 2, wherein the second conductive line comprises:
a third sub-conductive line arranged along the first direction and extending along the second direction;
a fourth sub-conductive line arranged along the second direction and extending along the first direction,
the first line segment is at least one of a portion of the third sub-wire and the fourth sub-wire.
4. The capacitive sensing module of claim 3, wherein the first segment connects the first sub-conductive line to the driving circuit, and the first segment is the third sub-conductive line.
5. The capacitive sensing module of claim 3, wherein the first line segment connects the second sub-conductive line with the driving circuit, the first line segment is the fourth sub-conductive line, and the third sub-conductive line extending along the second direction is a plurality of line segments arranged at intervals.
6. The capacitive sensing module of claim 3, wherein the first line segment connects the first sub-conductive line with the driving circuit, the third sub-conductive line extending along the second direction is a plurality of line segments arranged at intervals, and the third sub-conductive line is combined with a portion of the fourth sub-conductive line crossing the third sub-conductive line to form the first line segment.
7. The capacitive sensing module of claim 3, wherein the first sub-conductive line and the third sub-conductive line are disposed in a same layer, and the second sub-conductive line and the fourth sub-conductive line are disposed in a same layer.
8. The capacitive sensing module of any one of claims 1 to 5, wherein the first conductive lines are disposed at the same density in the first region as the second conductive lines are disposed in the second region.
9. The capacitive sensing module of any one of claims 1 to 7, wherein in an orthographic projection of the substrate direction, a line width of the first conductive line and a line width of the second conductive line are the same.
10. The capacitive sensing module of any one of claims 1 to 7, further comprising a second line segment connecting the first line segment with the first conductive line.
11. The capacitive sensing module of any one of claims 1 to 7, wherein the driving circuit is located on a side of the substrate facing the first electrode, the substrate comprising a bonding region, the bonding region being located on a side of the first region facing away from the second region in the first direction, the driving circuit being bonded to the bonding region.
12. The capacitive sensing module of claim 11, further comprising a rigid transparent substrate, wherein the rigid transparent substrate is adhesively connected to the substrate, and wherein the first electrode, the virtual electrode, and the driving circuit located in the bonding region are located between the substrate and the rigid transparent substrate.
13. The capacitive sensing module of any one of claims 1 to 7, wherein the substrate is a rigid substrate having a thickness of less than or equal to 0.3 mm.
14. A display panel, characterized in that, the display panel includes a display module and a capacitance sensing module, the capacitance sensing module is located above the display module, the capacitance sensing module is according to any one of claims 1 to 13, the display module includes a display area, the first area and the second area are located in the display area, and the side of the substrate provided with the first electrode faces the display module.
15. A display device characterized by comprising the display panel according to claim 14.
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| CN202110242174.9A CN113010051A (en) | 2021-03-04 | 2021-03-04 | Capacitance sensing module, display panel and display device |
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| CN202110242174.9A CN113010051A (en) | 2021-03-04 | 2021-03-04 | Capacitance sensing module, display panel and display device |
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| JP2020115316A (en) * | 2019-01-18 | 2020-07-30 | Ｎｉｓｓｈａ株式会社 | Touch panel and manufacturing method thereof |
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| US20190294846A1 (en) * | 2017-12-29 | 2019-09-26 | Kunshan Go-Visionox Opto-Electronics Co., Ltd. | Touch panel, manufacturing method thereof and display device |
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