CN111309193A - Display device, touch display panel, touch substrate and manufacturing method thereof - Google Patents
Display device, touch display panel, touch substrate and manufacturing method thereof Download PDFInfo
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- CN111309193A CN111309193A CN202010070465.XA CN202010070465A CN111309193A CN 111309193 A CN111309193 A CN 111309193A CN 202010070465 A CN202010070465 A CN 202010070465A CN 111309193 A CN111309193 A CN 111309193A
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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
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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
- G06F3/0412—Digitisers structurally integrated in a display
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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
- G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
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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
- G06F2203/04111—Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
Abstract
The disclosure relates to a display device, a touch display panel, a touch substrate and a manufacturing method thereof, and relates to the technical field of display. The touch substrate comprises a substrate, a touch electrode layer and a protective layer, wherein the touch electrode layer is arranged on one side of the substrate and is provided with a plurality of concave regions which are concave towards the substrate and spacing regions which are used for separating the concave regions. The protective layer is arranged on the surface of the touch electrode layer, which is far away from the substrate, covers the spacing area and fills the recessed area. The touch substrate can reduce the risk of touch obstacle.
Description
Technical Field
The disclosure relates to the technical field of display, and particularly relates to a display device, a touch display panel, a touch substrate and a manufacturing method of the touch substrate.
Background
Currently, touch display panels are widely used in various electronic devices such as mobile phones and tablet computers, and a touch display panel in which a touch substrate is embedded in an OLED (organic light-emitting diode) display substrate by using an in-cell technology is common. For a self-capacitance touch substrate, the touch position is determined by sensing the capacitance change between a finger and a touch electrode. However, under the influence of the display substrate, the touch substrate often has touch obstacles, which causes abnormal touch function and affects normal use.
It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present disclosure, and thus may include information that does not constitute prior art known to those of ordinary skill in the art.
Disclosure of Invention
The present disclosure is directed to overcome the above-mentioned deficiencies in the prior art, and provides a display device, a touch display panel, a touch substrate and a method for manufacturing the touch substrate, which can reduce the risk of touch obstacle.
According to an aspect of the present disclosure, there is provided a touch substrate including:
a substrate;
the touch electrode layer is arranged on one side of the substrate and is provided with a plurality of sunken areas sunken towards the substrate and spacing areas for separating the sunken areas;
and the protective layer is arranged on the surface of the touch electrode layer, which deviates from the substrate, covers the spacing area and fills the recessed area.
In an exemplary embodiment of the present disclosure, the substrate is provided with a plurality of grooves arranged at intervals, and the shape of the recessed area matches with the grooves and fits in the grooves in a one-to-one correspondence manner.
In an exemplary embodiment of the present disclosure, the recessed regions are identical in shape.
According to an aspect of the present disclosure, there is provided a method of manufacturing a touch substrate, including:
forming a touch electrode layer on one side of a substrate, wherein the touch electrode layer is provided with a plurality of concave regions which are concave towards the substrate and a spacing region which is used for separating the concave regions;
and forming a protective layer which covers the spacing region and fills the recessed region on the surface of the touch electrode layer, which is far away from the substrate.
In an exemplary embodiment of the present disclosure, forming a touch electrode layer on one side of a substrate includes:
forming a plurality of grooves arranged at intervals on the surface of one side of the substrate;
and forming a touch electrode layer on the surface of the substrate with the grooves to form concave regions matched and attached with the grooves in a one-to-one correspondence manner.
In an exemplary embodiment of the present disclosure, the recessed regions are identical in shape.
According to an aspect of the present disclosure, there is provided a touch display panel including a display substrate and the touch substrate described in any one of the above, the display substrate including:
the driving back plate is arranged opposite to the protective layer;
the first electrode is arranged on one side, close to the protective layer, of the driving back plate;
the pixel defining layer is arranged on one side, close to the protective layer, of the driving back plate and is provided with a pixel area exposing the first electrode, and the pixel area is opposite to the spacing area;
the isolation column is arranged on the surface, close to the protective layer, of the pixel definition layer and is opposite to the depressed area;
a light emitting layer covering the pixel defining layer, the isolation column and the first electrode;
and a second electrode covering the light emitting layer.
In an exemplary embodiment of the disclosure, the recessed area includes a first section and a second section that sequentially penetrate toward the substrate along a depth direction, the first section and a projection of the pixel definition layer on the driving backplane coincide, and the second section and a projection of the isolation pillar on the driving backplane coincide.
In an exemplary embodiment of the present disclosure, a distance between the bottom of the recessed region and a region of the second electrode corresponding to the isolation pillar is a first distance, a distance between the spacer region and a region of the second electrode corresponding to the pixel region is a second distance, and the first distance and the second distance are equal.
According to an aspect of the present disclosure, a display device is provided, which includes any one of the above touch display panels.
The touch electrode layer is provided with the recessed area and the spacing area, the spacing area can be opposite to the pixel area, the recessed area can be opposite to the area outside the pixel area in the pixel definition layer, the distance between the position of the touch electrode layer in the recessed area and the second electrode layer is increased, disturbance to the touch electrode layer after the second electrode is electrified is reduced, the capacitance change detected by the touch electrode layer is not affected by the disturbance of the second electrode, the risk of touch obstacle is reduced, and the normal operation of a touch function is ensured.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.
Fig. 1 is a schematic diagram of an embodiment of a touch display panel in the related art.
Fig. 2 is a schematic diagram of a touch display panel according to an embodiment of the disclosure.
Fig. 3 is a schematic view of another embodiment of a touch display panel according to the present disclosure.
Fig. 4 is a flowchart illustrating a method for manufacturing a touch substrate according to an embodiment of the disclosure.
Description of reference numerals:
in fig. 1: 100. a touch electrode layer; 200. driving the back plate; 300. a first electrode; 400. a pixel defining layer; 500. an isolation column; 600. a light emitting layer; 700. a second electrode;
in fig. 2: 1. a substrate; 2. a touch electrode layer; 201. a recessed region; 2011. a first stage; 2012. a second stage; 202. a spacer region; 3. a protective layer; 4. driving the back plate; 5. a first electrode; 6. a pixel defining layer; 7. an isolation column; 8. a light emitting layer; 9. a second electrode.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted. Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale.
Although relative terms, such as "upper" and "lower," may be used in this specification to describe one element of an icon relative to another, these terms are used in this specification for convenience only, e.g., in accordance with the orientation of the examples described in the figures. It will be appreciated that if the device of the icon were turned upside down, the element described as "upper" would become the element "lower". When a structure is "on" another structure, it may mean that the structure is integrally formed with the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via another structure.
The terms "a," "an," "the," "said" are used to indicate the presence of one or more elements/components/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc.; the terms "first" and "second" are used merely as labels, and are not limiting on the number of their objects.
In the related art, as shown in fig. 1, a self-contained OLED touch display panel adopting an in-cell technology generally includes an OLED display panel and a self-contained touch substrate embedded in the OLED display panel, where the touch substrate generally includes a touch electrode layer 100, and a touch position is determined by determining a current caused by a change in capacitance between the touch electrode layer 100 and a finger through a touch driving circuit. The display panel generally includes a driving backplane 200, a first electrode 300 and a pixel defining layer 400 are disposed on the driving backplane 200, the pixel defining layer 400 has a pixel region exposing the first electrode 300, an isolation pillar 500 is disposed on the pixel defining layer 400, and meanwhile, the display panel further includes a light emitting layer 600 covering the pixel defining layer 400, the isolation pillar 500 and the first electrode 300, the light emitting layer 600 is covered by a second electrode 700, and the first electrode 300, the light emitting layer 600 and the second electrode 700 may form an OLED light emitting device for emitting light to display an image.
As shown in fig. 1, the applicant found that, when power is applied, a capacitance is generated between the second electrode 700 and the touch electrode layer 100, and the second electrode 700 and the touch electrode layer 100 are regarded as two electrode plates of the capacitance, and the distance d between the second electrode 700 and the touch electrode layer 100 is the distance between the two electrode plates. According to the calculation formula of the capacitance (C ═ S/4 pi kd, where e is the dielectric constant of the medium between the plates, S is the plate area, d is the distance between the plates, and k is the constant of the electrostatic force), it can be seen that the smaller d is, the larger the capacitance C is. Therefore, the smaller the distance d between the area of the second electrode 700 corresponding to the isolation pillar 500 and the touch electrode layer 100 is, the stronger the capacitance generated between the second electrode 700 and the touch electrode layer 100 disturbs the capacitance between the touch electrode layer 100 and the finger, and the capacitance change between the finger and the touch electrode layer 100 is determined to be adversely affected, thereby causing touch obstacle, and causing difficulty in normal touch function.
The present disclosure provides a touch substrate, as shown in fig. 2, the touch substrate includes a substrate 1, a touch electrode layer 2, and a protective layer 3, wherein:
the touch electrode layer 2 is disposed on one side of the substrate 1, and has a plurality of recessed regions 201 recessed toward the substrate 1 and a spacer region 202 separating the recessed regions 201. The protection layer 3 is disposed on the surface of the touch electrode layer 2 away from the substrate 1, and covers the spacer 202 and fills the recess 201.
In the touch substrate of the embodiment of the present disclosure, the touch electrode layer 2 has the recessed area 201 and the spacer area 202, and the spacer area 202 may be directly opposite to the pixel area, and the recessed area 201 may be directly opposite to the spacer 7, so that the distance D between the recessed area 201 and the second electrode 9 layer of the touch electrode layer 2 is increased, that is, the distance D in fig. 2 is greater than the distance D in fig. 1, thereby reducing the disturbance of the capacitance of the second electrode 9 and the touch electrode layer 2 to the touch electrode layer 2, ensuring that the capacitance change detected by the touch electrode layer 2 is not affected by the disturbance of the second electrode 9, reducing the risk of occurrence of touch obstacle, and ensuring the normal operation of the touch function.
The following describes each part of the touch substrate according to the embodiments of the present disclosure in detail:
as shown in fig. 2, the substrate 1 may be used to support the touch electrode layer 2 and other film layers thereon, and meanwhile, the substrate 1 may be used to encapsulate the display substrate, that is, the substrate 1 may be used as an encapsulating cover plate of the entire touch display panel. The substrate 1 may have a single-layer structure or a multi-layer structure, for example: the substrate 1 can be a transparent substrate, and the material of the substrate can be glass, acrylic or other transparent materials; alternatively, the substrate 1 may include a transparent substrate and a buffer layer stacked on the transparent substrate, and the buffer layer blocks impurities of the transparent substrate from affecting the touch electrode layer 2.
As shown in fig. 2, the touch electrode layer 2 may employ a self-capacitance principle, that is, capacitance is generated between the touch electrode layer 2 and a finger or other external touch device, and the touch position can be determined by the touch driving circuit according to the current generated by the change of the capacitance, for example, the touch electrode layer 2 may include a plurality of electrode blocks, each of which can generate capacitance with the finger, and the touch driving circuit may be connected to each of the electrode blocks, and the detailed principle of self-capacitance touch is not described in detail herein.
Meanwhile, as shown in fig. 2, in order to reduce the current disturbance caused by the display substrate to the touch electrode layer 2, the touch electrode layer 2 may form a recessed region 201 recessed toward the base 1, and a region of the touch electrode layer 2 not recessed toward the base 1 is a spacer region 202, and the spacer region 202 separates the recessed region 201, that is, the recessed region 201 is recessed toward the base 1 relative to the spacer region 202. In the direction perpendicular to the substrate 1, due to the existence of the recessed area 201, the distance D between the area of the touch electrode layer 2 in the recessed area 201 and the area of the second electrode 9 corresponding to the area can be increased, and the current disturbance of the second electrode 9 to the touch electrode layer 2 is reduced.
Further, as shown in fig. 2, the recessed areas 201 may have the same shape to ensure that the distances between the recessed areas 201 of the touch electrode layer 2 and the second electrodes 9 are the same.
In some embodiments of the present disclosure, as shown in fig. 2, in order to form the recessed area 201, a plurality of grooves may be disposed at intervals on the substrate 1, and the touch electrode layer 2 is formed on the surface of the substrate 1 on which the grooves are disposed, so as to form the recessed area 201 on the inner surface of each groove, and accordingly, the shape and size of the recessed area 201 are matched with those of the grooves. Meanwhile, the touch electrode layer 2 is located outside the groove to form a spacer 202.
As shown in fig. 2, the protection layer 3 may be disposed on a surface of the touch electrode layer 2 facing away from the substrate 1, and cover the spacer 202 and fill the recess 201. The protective layer 3 is made of a transparent insulating material, and the material of the protective layer includes one or more of PI (polyimide), acrylic, and the like, and the protective layer 3 can protect the touch electrode layer 2 and can also realize planarization, so that the display device and the display substrate can be mounted on a box.
The present disclosure provides a method for manufacturing a touch substrate, where the touch substrate may be the touch substrate of any of the above embodiments, and a structure of the touch substrate is not described in detail herein, and as shown in fig. 4, the method for manufacturing the touch substrate of the present disclosure includes steps S110 and S120, where:
step S110, forming a touch electrode layer on one side of a substrate, wherein the touch electrode layer is provided with a plurality of concave regions which are concave towards the substrate and a spacing region which is used for separating the concave regions;
and step S120, forming a protective layer which covers the spacing region and fills the recessed region on the surface of the touch electrode layer, which is far away from the substrate.
The beneficial effects of the manufacturing method of the embodiment of the present disclosure can refer to the beneficial effects of the display substrate, and are not described herein again.
The following describes in detail the steps of the manufacturing method according to the embodiment of the present disclosure:
in step S110, as shown in fig. 2, the structure of the base 1 can refer to the base 1 in the above embodiment of the touch substrate, and is not described in detail here.
In some embodiments of the present disclosure, forming a touch electrode layer on one side of a substrate, i.e., step S110, includes steps S1110 and S1120, wherein:
step S1110 is to form a plurality of grooves spaced apart from each other on a surface of one side of the substrate.
As shown in fig. 2, the depth of the groove may be determined in advance according to a height difference between two regions of the second electrode 9 corresponding to the isolation pillar 7 and the corresponding pixel region in the display substrate, and specific data thereof is not particularly limited herein. The grooves may be formed using a photolithography process or other grooving process as long as the grooves can be formed.
Step S1120, forming a touch electrode layer on the surface of the substrate having the groove to form a recessed region matching and attaching with the groove one to one.
As shown in fig. 2, the touch electrode layer 2 may be formed by a patterning process such as one or more photolithography processes, which is not limited herein. In the process, the touch electrode layer 2 is undulated along the surface of the substrate 1 provided with the grooves, so that the inner surface of each groove forms a concave area 201, and correspondingly, the shape and the size of the concave area 201 are matched with those of the grooves. Meanwhile, the touch electrode layer 2 is located outside the groove to form a spacer 202.
In step S120, as shown in fig. 2, the protection layer 3 is made of a transparent insulating material, and the material of the protection layer 3 includes one or more of PI (polyimide), acrylic, and the like, and the protection layer 3 can protect the touch electrode layer 2 and can also be planarized, so as to be mounted on the display substrate. For example, a protective material layer may be formed on one side of the touch electrode layer 2 covered by the substrate 1 by coating or other processes, the protective material layer may fill the groove of the substrate 1 and cover the region of the substrate 1 outside the groove, and then the protective layer 3 is formed by curing through processes such as curing.
It should be noted that although the various steps of the methods of the present disclosure are depicted in the drawings in a particular order, this does not require or imply that these steps must be performed in this particular order, or that all of the depicted steps must be performed, to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step execution, and/or one step broken down into multiple step executions, etc.
The embodiments of the present disclosure also provide a touch display panel, as shown in fig. 2, the touch display panel includes a display substrate and the touch substrate of any of the above embodiments, the display substrate and the touch substrate are disposed opposite to each other, wherein:
the structure of the touch substrate can refer to the above embodiments of the touch substrate, and is not described herein again. The display substrate comprises a driving backboard 4, a first electrode 5, a pixel definition layer 6, an isolation column 7, a light-emitting layer 8 and a second electrode 9, wherein:
the driving back plate 4 is arranged opposite to the protective layer 3 of the touch substrate. The first electrode 5 is disposed on a side of the driving backplate 4 close to the protection layer 3. The pixel defining layer 6 is disposed on one side of the driving backplane 4 close to the protection layer 3, and has a pixel region exposing the first electrode 5, and the pixel region is opposite to the spacer region 202. The isolation column 7 is arranged on the surface of the pixel defining layer 6 close to the protective layer 3, and the concave area 201 is opposite to the isolation column 7. The light emitting layer 8 covers the pixel defining layer 6, the spacer 7, and the first electrode 5. The second electrode 9 covers the light-emitting layer 8.
The beneficial effects of the touch display panel of the present disclosure can refer to the beneficial effects of the display substrate, which are not described in detail herein.
The display substrate is explained in detail below:
as shown in fig. 2, the driving backplane 4 may include a plurality of driving devices distributed in an array, and the driving devices may be Thin Film Transistors (TFTs) for driving the light emitting devices to emit light, taking the driving devices as top gate type TFTs as an example: the driving backplane 4 may include a substrate on which thin film transistors are disposed in an array, each of the thin film transistors including an active layer, a gate insulating layer, a gate electrode, a dielectric layer, and a source drain layer, wherein:
as shown in fig. 2, the active layer is disposed on one side of the substrate, and the gate insulating layer covers the active layer; the grid is arranged on one side of the active layer, which is far away from the substrate; the dielectric layer covers the grid electrode and the grid insulating layer; the source-drain layer is arranged on one side of the dielectric layer, which is far away from the substrate, and comprises a source electrode and a drain electrode which are connected with two ends of the active layer, and the drain electrode can be connected with the first electrode 5.
In addition, the driving backplate 4 further includes a planarization layer covering the source drain layer and the dielectric layer.
As shown in fig. 2, the first electrode 5 is disposed on a side of the driving backplane 4 close to the protection layer 3, for example, the first electrode 5 is disposed on a surface of the planarization layer away from the substrate, and the first electrodes 5 are plural and distributed in an array to serve as an anode of the OLED light emitting device.
As shown in fig. 2, the pixel defining layer 6 is disposed on one side of the driving backplane 4 close to the protection layer 3, the pixel defining layer 6 has a plurality of pixel regions, each pixel region has an open pore structure, and each pixel region exposes each first electrode 5 in a one-to-one correspondence manner.
As shown in fig. 2, the isolation pillar 7 may be disposed on a surface of the pixel defining layer 6 close to the protection layer 3, and may be used to support the touch substrate, a cross section of the isolation pillar 7 in a direction perpendicular to the driving backplate 4 may be trapezoidal, rectangular, etc., and a height thereof is not particularly limited herein as long as it can abut against the touch substrate, for example, a surface of the isolation pillar 7 away from the driving backplate 4 may abut against the protection layer 3 of the touch substrate. The isolation pillar 7 is located outside the pixel region, and the isolation pillar 7 may be opposite to the recess region 201.
The projection of the isolation pillar 7 on the touch electrode layer 2 is located within the recessed area 201, and the projection of the isolation pillar 7 is smaller than the recessed area 201.
Further, as shown in fig. 2, the projection of the pixel defining layer 6 on the touch electrode layer 2 coincides with the recessed area 201, that is, the outlines of the pixel defining layer and the recessed area are at least partially overlapped, so that the isolation pillar 7 and the pixel defining layer 6 are both located in the range covered by the recessed area 201; the projection of the pixel region on the touch electrode layer 2 coincides with the spacer region 202, i.e. the outlines of the two overlap at least partially.
As shown in fig. 2, the light emitting layer 8 covers the pixel defining layer 6, the spacer 7, and the first electrode 5, and the light emitting layer 8 is layered with the first electrode 5 in the pixel region while undulating according to the profile of the pixel defining layer 6 and the spacer 7. For example, the light-emitting layer 8 may include a hole injection layer, a hole transport layer, a light-emitting functional layer, an electron transport layer, and an electron injection layer, which are sequentially stacked in a direction away from the driving backplane 4.
As shown in fig. 2, the second electrode 9 covers the light-emitting layer 8 and is conformal with the light-emitting layer 8, so that the height of the region of the second electrode 9 corresponding to the isolation pillar 7 is greater than the height of the region of the second electrode 9 corresponding to the pixel region. The recessed region 201 is opposite to the isolation column 7, and the spacing region 202 is opposite to the pixel region, so that the distance between the region of the second electrode 9 corresponding to the isolation column 7 and the touch electrode layer 2 is increased, and the interference to the touch electrode layer 2 is avoided.
Further, as shown in fig. 2, in some embodiments of the present disclosure, the bottom surface of the recess 201 is a plane parallel to the substrate 1, a distance between the bottom of the recess 201 and the region of the second electrode 9 corresponding to the isolation pillar 7 may be defined as a first distance, a distance between the spacer 202 and the region of the second electrode 9 corresponding to the pixel region may be defined as a second distance, and the first distance and the second distance may be made equal, so that the influence of each region of the second electrode 9 on the touch electrode layer 2 is uniform, so as to compensate or eliminate the influence uniformly, and reduce the influence of the display substrate on the touch function of the touch substrate to the greatest extent.
In other embodiments of the present disclosure, as shown in fig. 3, the recessed area 201 may be a stepped groove, specifically, the recessed area 201 may include a first section 2011 and a second section 2012 sequentially penetrating toward the substrate 1 along the depth direction, that is, the second section 2012 is communicated with the bottom of the first section 2011 and extends toward the substrate 1; meanwhile, the projection of the second segment 2012 on the substrate 1 is smaller than the projection of the first segment 2011 on the substrate 1. The projections of the first section 2011 and the pixel definition layer 6 on the driving back plate 4 coincide with each other, and the projections of the second section 2012 and the isolation column 7 on the driving back plate 4 coincide with each other, so that the recessed region 201 has two depths to match the heights of the pixel definition layer 6 and the isolation column 7 thereon, and the interference of the region of the second electrode 9 corresponding to the isolation column 7 on the touch electrode layer 2 can be avoided while the interference of the region of the second electrode 9 corresponding to the region of the pixel definition layer 6 not covered by the isolation column 7 on the touch electrode layer 2 is avoided.
Further, as shown in fig. 3, a distance D1 between the bottom of the first segment 2011 and the region of the second electrode 9 corresponding to the first segment 2011 is equal to a distance D2 between the bottom of the second segment 2012 and the region of the second electrode 9 corresponding to the second segment 2012, and may be equal to a distance between the spacer 202 and the region of the second electrode 9 located in the pixel region, so that the distance between the touch electrode layer 2 and the second electrode 9 is kept uniform.
The embodiments of the present disclosure also provide a display device, which may include the touch display panel of any of the above embodiments, and the structure of the touch display panel and the beneficial effects of the display device have been described in detail above, and are not repeated herein. The display device can be an electronic device such as a mobile phone, a tablet personal computer, electronic paper and the like to realize touch and display functions, which are not listed.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
Claims (10)
1. A touch substrate, comprising:
a substrate;
the touch electrode layer is arranged on one side of the substrate and is provided with a plurality of sunken areas sunken towards the substrate and spacing areas for separating the sunken areas;
and the protective layer is arranged on the surface of the touch electrode layer, which deviates from the substrate, covers the spacing area and fills the recessed area.
2. The touch substrate of claim 1, wherein the base has a plurality of spaced grooves, and the recessed areas are shaped to match the grooves and fit into the grooves in a one-to-one correspondence.
3. The touch substrate of claim 1, wherein the recessed areas have the same shape.
4. A method for manufacturing a touch substrate is characterized by comprising the following steps:
forming a touch electrode layer on one side of a substrate, wherein the touch electrode layer is provided with a plurality of concave regions which are concave towards the substrate and a spacing region which is used for separating the concave regions;
and forming a protective layer which covers the spacing region and fills the recessed region on the surface of the touch electrode layer, which is far away from the substrate.
5. The method of claim 4, wherein forming the touch electrode layer on one side of the substrate comprises:
forming a plurality of grooves arranged at intervals on the surface of one side of the substrate;
and forming a touch electrode layer on the surface of the substrate with the grooves to form concave regions matched and attached with the grooves in a one-to-one correspondence manner.
6. The method of manufacturing of claim 4, wherein the recessed areas are the same shape.
7. A touch display panel comprising a display substrate and the touch substrate of any one of claims 1-3, the display substrate comprising:
the driving back plate is arranged opposite to the protective layer;
the first electrode is arranged on one side, close to the protective layer, of the driving back plate;
the pixel defining layer is arranged on one side, close to the protective layer, of the driving back plate and is provided with a pixel area exposing the first electrode, and the pixel area is opposite to the spacing area;
the isolation column is arranged on the surface, close to the protective layer, of the pixel definition layer and is opposite to the depressed area;
a light emitting layer covering the pixel defining layer, the isolation column and the first electrode;
and a second electrode covering the light emitting layer.
8. The touch display panel according to claim 7, wherein the recessed area includes a first section and a second section that sequentially penetrate toward the substrate along a depth direction, the first section and the projection of the pixel definition layer on the driving backplane coincide, and the second section and the projection of the isolation pillar on the driving backplane coincide.
9. The touch display panel according to claim 7, wherein a distance between the bottom of the recessed region and the region of the second electrode corresponding to the isolation pillar is a first distance, a distance between the spacer region and the region of the second electrode corresponding to the pixel region is a second distance, and the first distance is equal to the second distance.
10. A display device comprising the touch display panel according to any one of claims 7 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010070465.XA CN111309193B (en) | 2020-01-21 | 2020-01-21 | Display device, touch display panel, touch substrate and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010070465.XA CN111309193B (en) | 2020-01-21 | 2020-01-21 | Display device, touch display panel, touch substrate and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN111309193A true CN111309193A (en) | 2020-06-19 |
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