CN113535013A - Touch substrate and display panel - Google Patents
Touch substrate and display panel Download PDFInfo
- Publication number
- CN113535013A CN113535013A CN202110924827.1A CN202110924827A CN113535013A CN 113535013 A CN113535013 A CN 113535013A CN 202110924827 A CN202110924827 A CN 202110924827A CN 113535013 A CN113535013 A CN 113535013A
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- substrate
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- control
- electrodes
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- 239000000758 substrate Substances 0.000 title claims abstract description 98
- 239000011521 glass Substances 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- 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
- G06F3/0447—Position sensing using the local deformation of sensor cells
-
- 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
- G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
- G06F3/04142—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position the force sensing means being located peripherally, e.g. disposed at the corners or at the side of a touch sensing plate
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/04164—Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
-
- 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
- G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
Abstract
The invention provides a touch substrate and a display panel. The touch substrate comprises a substrate, wherein the substrate is provided with a first side surface and a second side surface, and the first side surface is opposite to the second side surface; the touch control structure is positioned on the first side surface; the touch control driving structure is positioned on the second side surface; the orthographic projections of the touch structure and the touch driving structure on the substrate are overlapped, and the touch structure and the touch driving structure are connected through a through hole formed in the substrate. This touch-control base plate through making touch-control structure and touch-control drive structure orthographic projection overlap on the basement, can reduce the regional area that touch-control drive structure occupies the touch-control structure and distributes the region outside to increase the area of touch-control structure distribution region, and then increased the regional area of touch-control thing identification such as fingerprint, improved the fingerprint identification degree of accuracy.
Description
Technical Field
The invention belongs to the technical field of touch display, and particularly relates to a touch substrate and a display panel.
Background
At present, as shown in fig. 1, in order to realize functions of fingerprint unlocking or fingerprint payment of a mobile phone and other portable display devices, a fingerprint identification sensor 5 is generally arranged on a side edge of the mobile phone. Most fingerprint identification sensors are silicon-based fingerprint identification sensors, i.e. sensor electrodes and signal wiring are manufactured on a silicon chip.
The current wafer resource is nervous, and the regional silicon chip that adopts of fingerprint identification, the area is big more the cost is higher, how can also reduce cost when increasing the regional area of cell-phone side fingerprint identification become the problem that awaits the solution at present.
Disclosure of Invention
In view of the above problems, the present invention provides a touch substrate and a display panel. This touch-control base plate through making touch-control structure and touch-control drive structure orthographic projection overlap on the basement, can reduce the regional area that touch-control drive structure occupies the touch-control structure and distributes the region outside to increase the area of touch-control structure distribution region, and then increased the regional area of touch-control thing identification such as fingerprint, improved the fingerprint identification degree of accuracy.
The invention provides a touch substrate, which comprises a substrate, wherein the substrate is provided with a first side surface and a second side surface, and the first side surface is opposite to the second side surface;
the touch control structure is positioned on the first side surface; the touch driving structure is positioned on the second side surface;
the touch structure and the touch driving structure are overlapped in orthographic projection on the substrate, and the touch structure is connected with the touch driving structure through a via hole formed in the substrate.
Optionally, the touch structure includes a plurality of touch electrodes arranged in an array;
the touch electrodes are uniformly arranged on the first side surface.
Optionally, the touch driving structure includes a plurality of touch signal lines;
the touch signal lines are respectively connected with the touch electrodes in a one-to-one correspondence manner;
the touch signal lines are parallel to each other and are arranged at equal intervals in sequence along a first direction; the first direction is a row direction of the touch electrode array;
the orthographic projection of the touch signal lines on the substrate is positioned in an orthographic projection area of the touch electrode array on the substrate.
Optionally, the touch electrodes are the same in size and shape;
orthographic projections of N touch signal lines which are sequentially adjacent along the first direction on the substrate are positioned in orthographic projection areas of a row of touch electrodes which are arranged along a second direction on the substrate; the second direction is a row direction of the touch electrode array;
the N touch signal lines are respectively connected with the touch electrodes in the row of touch electrodes in a one-to-one correspondence mode.
Optionally, the touch signal line extends along the second direction;
n touch signal lines which are sequentially adjacent along the first direction are respectively overlapped with the orthographic projection of each of a row of touch electrodes which are arranged along the second direction on the substrate.
Optionally, each touch signal line is connected to one touch electrode through M via holes;
wherein M is more than or equal to 1.
Optionally, the touch driving structure further includes a touch driving portion; the touch driving part is positioned at the tail end of the touch signal line;
the touch control driving part is connected with the tail ends of the touch control signal lines; the touch control driving circuit is used for providing a touch control driving signal for the touch control electrode.
Optionally, the touch driving portion is located at an end of the same side of the plurality of touch signal lines, and the touch driving portion is connected to the end of the same side of the plurality of touch signal lines.
Optionally, the substrate is made of glass or organic resin material.
The embodiment of the invention also provides a display panel, which comprises a display substrate and the touch substrate;
the touch substrate is arranged on the edge end face of the display substrate, the touch structure of the touch substrate faces away from the edge end face of the display substrate, and the touch driving structure of the touch substrate faces towards the edge end face of the display substrate.
The invention has the beneficial effects that: according to the touch substrate provided by the invention, the orthographic projections of the touch structure and the touch driving structure on the substrate are overlapped, so that the area of the touch driving structure occupying the area outside the touch structure distribution area can be reduced, the area of the touch structure distribution area is increased, the area of a fingerprint and other touch object identification areas is increased, and the fingerprint identification accuracy is improved.
By adopting the touch substrate, the display panel provided by the invention can realize the touch function of the display panel on one hand, and can realize narrow-frame or frameless display of the display panel on the other hand, and meanwhile, the touch cost of the display panel can be reduced.
Drawings
FIG. 1 is a schematic diagram of a side of a mobile phone with a fingerprint sensor;
FIG. 2 is a schematic diagram of a fingerprint sensor on a display device according to the disclosed technology;
FIG. 3 is a schematic top view of a first side surface of a substrate of a touch substrate according to an embodiment of the invention;
FIG. 4 is a schematic top view of a second side of a substrate of a touch substrate according to an embodiment of the invention;
FIG. 5 is a schematic cross-sectional view of a touch substrate along a section line AA in FIG. 3 according to an embodiment of the present disclosure;
FIG. 6 is a schematic diagram illustrating a connection arrangement of touch signal lines and touch electrodes according to an embodiment of the present invention;
FIG. 7 is a schematic diagram illustrating another connection arrangement of touch signal lines and touch electrodes according to an embodiment of the present invention;
fig. 8 is a schematic sectional view of the structure along the line BB cut in fig. 7.
Wherein the reference numerals are:
1. a substrate; 101. a first side surface; 102. a second side surface; 10. a via hole; 2. a touch electrode; 3. a touch signal line; 4. a touch drive section; 5. a fingerprint recognition sensor; 6. a driving chip; 7. a display device.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, a touch substrate and a display panel of the present invention are described in further detail below with reference to the accompanying drawings and the detailed description.
In the disclosure, referring to fig. 2, the fingerprint sensor includes a touch electrode 2, a touch signal line 3 connected to the touch electrode 2, and a driving chip 6 for providing a touch driving signal to the touch electrode 2, wherein the touch signal line 3 is connected to the driving chip 6. In the fingerprint identification sensor setting area of the display device 7, the arrangement of the touch electrodes 2 occupies most of the fingerprint identification sensor setting area, and the touch signal lines 3 are routed from the periphery of the arrangement area of the touch electrodes 2 to the position of the driving chip 6 and are connected with the driving chip 6. When the number of the touch electrodes 2 is larger, the number of the touch signal lines 3 is also larger, so that the periphery of the arrangement area of the touch electrodes 2 also needs an area with a sufficient width for routing; with the development of the technology, the thickness of the display device such as a mobile phone is thinner and thinner, so the area of the edge end face of the side edge of the mobile phone is smaller and smaller, the distribution area of the fingerprint identification sensor of the edge end face of the side edge of the mobile phone is smaller and smaller, the fingerprint identification accuracy is reduced, and how to increase the area of the fingerprint identification area of the side edge of the mobile phone becomes a problem to be solved urgently.
To address the problem that the area of the side fingerprint identification area of the mobile phone needs to be further increased, an embodiment of the invention provides a touch substrate, as shown in fig. 3 to 5, including a substrate 1, where the substrate 1 has a first side 101 and a second side 102, and the first side 101 is opposite to the second side 102; the touch control structure is positioned on the first side surface 101; the touch driving structure is located on the second side surface 102; the orthographic projections of the touch structure and the touch driving structure on the substrate 1 are overlapped, and the touch structure and the touch driving structure are connected through a through hole 10 formed in the substrate 1.
The touch structure can be used for sensing and identifying touch objects such as fingerprints, so that the touch substrate can be touched by the touch objects such as the fingerprints. The touch driving structure is used for providing a touch driving signal for the touch structure.
By overlapping the touch control structure and the orthographic projection of the touch control driving structure on the substrate 1, the area of the touch control driving structure outside the distribution area of the touch control structure can be reduced, so that the area of the distribution area of the touch control structure is increased, the area of the identification area of touch control objects such as fingerprints is increased, and the fingerprint identification accuracy is improved.
Alternatively, the substrate 1 employs glass or an organic resin material. The touch structure and the touch driving structure are manufactured on the substrate 1 made of glass or organic resin material, so that the silicon wafer can be prevented from being used as the substrate 1 of the touch substrate, and the cost of the touch substrate can be reduced.
Optionally, in this embodiment, the touch structure includes a plurality of touch electrodes 2, and the plurality of touch electrodes 2 are arranged in an array; the touch electrodes 2 are uniformly arranged on the first side surface 101. The touch electrode 2 can realize sensing and identification of touch objects such as fingerprints.
Optionally, in this embodiment, the touch driving structure includes a plurality of touch signal lines 3; the touch signal lines 3 are respectively connected with the touch electrodes 2 in a one-to-one correspondence manner; the touch signal lines 3 are parallel to each other and are sequentially arranged at equal intervals along the first direction X; the first direction X is a row direction of the array of touch electrodes 2; the orthographic projection of the touch signal lines 3 on the substrate 1 is positioned in the orthographic projection area of the touch electrode 2 array on the substrate 1. Due to the arrangement, the touch signal lines 3 do not need to occupy the peripheral area outside the arrangement area of the touch electrodes 2, and the peripheral area can be used for arranging the touch electrodes 2, so that the arrangement area of the touch electrodes 2 is increased, and the sensing and identifying accuracy of the touch electrodes 2 on touch objects such as fingerprints can be improved.
Optionally, referring to fig. 6, the touch electrodes 2 are the same in size and shape; orthographic projections of N touch signal lines 3 which are sequentially adjacent along a first direction X on the substrate 1 are positioned in orthographic projection areas of a row of touch electrodes 2 which are distributed along a second direction Y on the substrate 1; the second direction Y is the row direction of the array of touch electrodes 2; the N touch signal lines 3 are connected to the touch electrodes 2 in the row of touch electrodes 2 in a one-to-one correspondence manner. That is, N is the number of the touch electrodes 2 arranged in the second direction Y. Wherein, N can be 3-8. So set up, make N touch-control signal line 3 adjacent in proper order along first direction X constitute a set of, the orthographic projection of every group touch-control signal line 3 on base 1 all corresponds to be located the orthographic projection region on base 1 of a row of touch-control electrode 2 that arranges along second direction Y respectively, thereby make every touch-control signal line 3 all be located touch-control electrode 2 array orthographic projection region on base 1, and then make touch-control signal line 3 need not to occupy the peripheral region outside touch-control electrode 2 area of arranging again, peripheral region also can be used for arranging touch-control electrode 2 like this, make the area of arranging of touch-control electrode 2 increase, can improve the sensing identification accuracy degree of touch-control object such as touch-control electrode 2 to fingerprints.
In this embodiment, the touch electrode 2 senses and identifies a touch object such as a fingerprint by using a self-capacitance touch principle.
Alternatively, referring to fig. 7 and 8, the touch signal line 3 extends along the second direction Y; n touch signal lines 3 sequentially adjacent to each other along the first direction X are respectively overlapped with the orthographic projection of each of a row of touch electrodes 2 arranged along the second direction Y on the substrate 1. Preferably, in this embodiment, the lengths of the plurality of touch signal lines 3 are equal, so that it can be ensured that the equivalent capacitance of each touch signal line 3 is the same, and thus the touch electrode 2 array can sense the identification of the touch object such as the fingerprint more accurately according to the self-capacitance touch principle.
It should be noted that the lengths of the touch signal lines 3 may also be unequal, but the difference is not great.
Optionally, referring to fig. 7, each touch signal line 3 is connected to one touch electrode 2 through M via holes 10; wherein M is more than or equal to 1. Each touch signal line 3 is connected with one touch electrode 2 through a plurality of via holes 10, so that the connection area between the touch signal line 3 and the touch electrode 2 can be increased, the connection impedance between the touch signal line 3 and the touch electrode 2 is reduced, the influence of the impedance on the self-capacitance of the touch electrode 2 is reduced, and the touch accuracy of the touch electrode 2 is improved.
Alternatively, the orthogonal projection shape of the via hole 10 on the substrate 1 may be any shape such as a circle, a rectangle, a triangle, a regular polygon or an irregular polygon. Optionally, the orthographic projection of the M via holes 10 on the substrate 1 is located in an orthographic projection area of the touch electrode 2 on the substrate 1, and the M via holes 10 are uniformly distributed in the orthographic projection area of the touch electrode 2.
Optionally, in this embodiment, the touch driving structure further includes a touch driving portion 4; the touch driving part 4 is positioned at the tail end of the touch signal line 3; the touch driving part 4 is connected with the tail ends of the plurality of touch signal lines 3; for providing touch driving signals to the touch electrodes 2. The touch driving unit 4 is a touch driving chip (i.e., a driving IC). By positioning the touch driving portion 4 at the end of the touch signal line 3, the touch driving portion 4 does not occupy the peripheral area except the arrangement area of the touch electrodes 2, and thus the peripheral area without the touch driving portion 4 can also be used for arranging the touch electrodes 2, so that the arrangement area of the touch electrodes 2 is increased, and the sensing and recognition accuracy of the touch electrodes 2 on touch objects such as fingerprints can be improved.
Optionally, the touch driving part 4 is located at the end of the same side of the plurality of touch signal lines 3, and the touch driving part 4 is connected to the end of the same side of the plurality of touch signal lines 3. With such an arrangement, the touch driving portion 4 only occupies one side of the peripheral area of the arrangement area of the touch electrodes 2, and the other sides of the peripheral area can also be used for arranging the touch electrodes 2, so that the arrangement area of the touch electrodes 2 is increased, and the sensing and identifying accuracy of the touch electrodes 2 on touch objects such as fingerprints can be improved.
It should be noted that, in the direction along the second direction Y on the side of the mobile phone, the touch electrodes 2 generally only need to be arranged in a partial area, and the partial area can be used for sensing and identifying touch objects such as fingerprints, and the side edge of the mobile phone has a partial spare area along the second direction Y, and the touch driving part 4 can be arranged in the partial spare area, so that not only is it ensured that the arrangement area of the touch electrodes 2 is sufficient for sensing and identifying touch objects such as fingerprints, but also the touch driving part 4 can be ensured to have a proper position to be arranged.
According to the touch substrate provided by the embodiment of the invention, the orthographic projections of the touch structure and the touch driving structure on the substrate are overlapped, so that the area of the touch driving structure occupying the area except the touch structure distribution area can be reduced, the area of the touch structure distribution area is increased, the area of a fingerprint and other touch object identification areas is increased, and the fingerprint identification accuracy is improved.
The embodiment of the invention also provides a display panel, which comprises a display substrate and the touch substrate in the embodiment; the touch substrate is arranged on the edge end face of the display substrate, the touch structure of the touch substrate faces away from the edge end face of the display substrate, and the touch driving structure of the touch substrate faces towards the edge end face of the display substrate.
Wherein the display panel is a mobile phone. The touch substrate can realize the side touch of the display panel, such as the touch of a fingerprint and other touch objects on the side of the mobile phone, so as to realize the functions of unlocking or payment of the mobile phone. Through setting up the touch-control base plate at display panel's marginal terminal surface, can make display panel's touch-control need not to occupy its display area again to can increase display panel's display area, realize display panel's narrow frame or no frame show.
By adopting the touch substrate in the above embodiment, the display panel can realize the touch function of the display panel on the one hand, and can realize narrow-frame or frameless display of the display panel on the other hand, and meanwhile, the touch cost of the display panel can be reduced.
The display panel provided by the invention can be any product or component with a display function, such as an LCD panel, an LCD television, an OLED panel, an OLED television, an LED panel, an LED television, a display, a mobile phone, a navigator and the like.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (10)
1. A touch substrate comprises a substrate, wherein the substrate is provided with a first side surface and a second side surface, and the first side surface is opposite to the second side surface;
the touch control structure is positioned on the first side surface; the touch driving structure is positioned on the second side surface;
the touch control structure is characterized in that orthographic projections of the touch control structure and the touch control driving structure on the substrate are overlapped, and the touch control structure is connected with the touch control driving structure through a through hole formed in the substrate.
2. The touch substrate of claim 1, wherein the touch structure comprises a plurality of touch electrodes arranged in an array;
the touch electrodes are uniformly arranged on the first side surface.
3. The touch substrate of claim 2, wherein the touch driving structure comprises a plurality of touch signal lines;
the touch signal lines are respectively connected with the touch electrodes in a one-to-one correspondence manner;
the touch signal lines are parallel to each other and are arranged at equal intervals in sequence along a first direction; the first direction is a row direction of the touch electrode array;
the orthographic projection of the touch signal lines on the substrate is positioned in an orthographic projection area of the touch electrode array on the substrate.
4. The touch substrate of claim 3, wherein the touch electrodes are identical in size and shape;
orthographic projections of N touch signal lines which are sequentially adjacent along the first direction on the substrate are positioned in orthographic projection areas of a row of touch electrodes which are arranged along a second direction on the substrate; the second direction is a row direction of the touch electrode array;
the N touch signal lines are respectively connected with the touch electrodes in the row of touch electrodes in a one-to-one correspondence mode.
5. The touch substrate of claim 4, wherein the touch signal line extends along the second direction;
n touch signal lines which are sequentially adjacent along the first direction are respectively overlapped with the orthographic projection of each of a row of touch electrodes which are arranged along the second direction on the substrate.
6. The touch substrate of claim 3, wherein each of the touch signal lines is connected to one of the touch electrodes through M vias;
wherein M is more than or equal to 1.
7. The touch substrate of claim 5, wherein the touch driving structure further comprises a touch driving portion; the touch driving part is positioned at the tail end of the touch signal line;
the touch control driving part is connected with the tail ends of the touch control signal lines; the touch control driving circuit is used for providing a touch control driving signal for the touch control electrode.
8. The touch substrate of claim 7, wherein the touch driving portion is located at an end of the same side of the touch signal lines, and the touch driving portion is connected to the end of the same side of the touch signal lines.
9. The touch substrate of claim 1, wherein the substrate is made of glass or organic resin.
10. A display panel comprising a display substrate and further comprising the touch substrate of any one of claims 1-9;
the touch substrate is arranged on the edge end face of the display substrate, the touch structure of the touch substrate faces away from the edge end face of the display substrate, and the touch driving structure of the touch substrate faces towards the edge end face of the display substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110924827.1A CN113535013A (en) | 2021-08-12 | 2021-08-12 | Touch substrate and display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110924827.1A CN113535013A (en) | 2021-08-12 | 2021-08-12 | Touch substrate and display panel |
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| Publication Number | Publication Date |
|---|---|
| CN113535013A true CN113535013A (en) | 2021-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110924827.1A Pending CN113535013A (en) | 2021-08-12 | 2021-08-12 | Touch substrate and display panel |
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| CN (1) | CN113535013A (en) |
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