CN111309193B - 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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- CN111309193B CN111309193B CN202010070465.XA CN202010070465A CN111309193B CN 111309193 B CN111309193 B CN 111309193B CN 202010070465 A CN202010070465 A CN 202010070465A CN 111309193 B CN111309193 B CN 111309193B
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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
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- Electroluminescent Light Sources (AREA)
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 base, a touch electrode layer and a protective layer, wherein the touch electrode layer is arranged on one side of the base and is provided with a plurality of concave areas which are concave towards the base and a spacing area for separating the concave areas. The protective layer is arranged on the surface of the touch electrode layer, which is away from the substrate, and covers the spacing region and fills the concave region. The touch substrate can reduce the risk of touch obstacle.
Description
Technical Field
The disclosure relates to the technical field of display, in particular to a display device, a touch display panel, a touch substrate and a manufacturing method of the touch substrate.
Background
At present, touch display panels are widely applied to various electronic devices such as mobile phones and tablet computers, wherein an in-cell technology is adopted to embed a touch substrate into an OLED (organic light-emitting diode) display substrate. For a self-contained touch substrate, the touch position is determined by sensing the capacitance change between the finger and the touch electrode. However, due to the influence of the display substrate, a touch control barrier often occurs on the touch control substrate, so that the touch control function is abnormal, and normal use is affected.
It should be noted that the information disclosed in the above background section is only for enhancing 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 disclosure aims to overcome the defects of the prior art, and provide a display device, a touch display panel, a touch substrate and a manufacturing method of the touch substrate, which can reduce the risk of occurrence of touch barriers.
According to one 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 concave areas concave towards the substrate and a spacing area for separating the concave areas;
and the protective layer is arranged on the surface of the touch electrode layer, which is away from the substrate, covers the interval region and fills the concave region.
In an exemplary embodiment of the disclosure, the substrate is provided with a plurality of grooves arranged at intervals, and the concave areas are matched with the grooves in shape and fit in the grooves in a one-to-one correspondence.
In an exemplary embodiment of the present disclosure, each of the recessed areas has the same shape.
According to one 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 areas concave towards the substrate and a spacing area for separating the concave areas;
and forming a protective layer which covers the interval region and fills the concave region on the surface of the touch electrode layer, which is away from the substrate.
In one exemplary embodiment of the present disclosure, a touch electrode layer is formed on one side of a substrate, including:
forming a plurality of grooves which are 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 so as to form concave areas matched and attached with the grooves in a one-to-one correspondence.
In an exemplary embodiment of the present disclosure, each of the recessed areas has the same shape.
According to an aspect of the present disclosure, there is provided a touch display panel including a display substrate and any one of the above touch substrates, the display substrate including:
the driving backboard is arranged opposite to the protective layer;
the first electrode is arranged on one side of the driving backboard, which is close to the protective layer;
the pixel definition layer is arranged on one side of the driving backboard, close to the protective layer, 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 the isolation column is opposite to the concave region;
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 present disclosure, the recess region includes a first segment and a second segment penetrating sequentially toward the substrate in a depth direction, projections of the first segment and the pixel defining layer on the driving back plate overlap, and projections of the second segment and the isolation column on the driving back plate overlap.
In an exemplary embodiment of the present disclosure, a distance between a bottom of the recess region and a region of the second electrode corresponding to the isolation column 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 is equal to the second distance.
According to an aspect of the present disclosure, there is provided a display device including the touch display panel of any one of the above.
According to the display device, the touch display panel, the touch substrate and the manufacturing method thereof, the touch electrode layer is provided with the concave area and the spacing area, the spacing area can be opposite to the pixel area, the concave area can be opposite to an area except the pixel area in the pixel definition layer, the distance between the position of the touch electrode layer in the concave area and the second electrode layer is increased, disturbance on the touch electrode layer after the second electrode is electrified is reduced, the influence of the disturbance on the second electrode on the capacitance change detected by the touch electrode layer is avoided, the risk of touch obstacle occurrence is reduced, and 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 disclosure and together with the description, serve to explain the principles of the disclosure. It will be apparent to those of ordinary skill in the art that the drawings in the following description are merely examples of the disclosure and that other drawings may be derived from them without undue effort.
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 an embodiment of a touch display panel of the present disclosure.
Fig. 3 is a schematic diagram of another embodiment of a touch display panel of the present disclosure.
Fig. 4 is a flowchart of an embodiment of a method for manufacturing a touch substrate according to the present disclosure.
Reference numerals illustrate:
in fig. 1: 100. a touch electrode layer; 200. a drive back plate; 300. a first electrode; 400. a pixel definition layer; 500. a separation 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 section; 2012. a second section; 202. a spacer; 3. a protective layer; 4. a drive back plate; 5. a first electrode; 6. a pixel definition layer; 7. a separation column; 8. a light emitting layer; 9. and a second electrode.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be embodied in many 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 the example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus detailed descriptions thereof 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" are used in this specification to describe the relative relationship of one component of an icon to another component, these terms are used in this specification for convenience only, such as in terms of the orientation of the examples described in the figures. It will be appreciated that if the device of the icon is flipped upside down, the recited "up" component will become the "down" component. 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 through another structure.
The terms "a," "an," "the," and "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. in addition to the listed elements/components/etc.; the terms "first" and "second" are used merely as labels, and are not intended to limit the number of their objects.
In the related art, as shown in fig. 1, a self-capacitive OLED touch display panel using in-cell technology generally includes an OLED display panel and a self-capacitive touch substrate embedded in the OLED display panel, the touch substrate generally includes a touch electrode layer 100, and a current caused by a change in capacitance between the touch electrode layer 100 and a finger is determined by a touch driving circuit, so as to determine a touch position. The display panel generally includes a driving backplate 200, a first electrode 300 and a pixel defining layer 400 are disposed on the driving backplate 200, the pixel defining layer 400 has a pixel region exposing the first electrode 300, and a barrier rib 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 barrier rib 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 constitute an OLED light emitting device for emitting light to display images.
As shown in fig. 1, the applicant found that after being electrified, 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 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 plates. According to the calculation formula of the capacitance (c=εS/4πkd, where ε 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 electrostatic force constant), 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, the stronger the disturbance caused by the capacitance generated between the second electrode 700 and the touch electrode layer 100 to the capacitance between the touch electrode layer 100 and the finger, the adverse effect on determining the capacitance change between the finger and the touch electrode layer 100 is caused, thereby causing a touch obstacle, and making it difficult for the touch function to normally perform.
The disclosed embodiments provide a touch substrate, as shown in fig. 2, which includes a base 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 recess regions 201 recessed toward the substrate 1 and a spacer region 202 separating the recess regions 201. The protective layer 3 is disposed on the surface of the touch electrode layer 2 facing away from the substrate 1, and covers the spacer 202 and fills the recess 201.
According to the touch substrate in the embodiment of the disclosure, the touch electrode layer 2 is provided with the concave region 201 and the spacing region 202, the spacing region 202 can be opposite to the pixel region, and the concave region 201 can be opposite to the isolation column 7, so that the distance D between the touch electrode layer 2 and the second electrode 9 layer in the concave region 201 is increased, namely the distance D in fig. 2 is larger than the distance D in fig. 1, disturbance of capacitance of the second electrode 9 and the touch electrode layer 2 to the touch electrode layer 2 is reduced, the capacitance change detected by the touch electrode layer 2 is not influenced by the disturbance of the second electrode 9, the risk of occurrence of touch obstacle is reduced, and normal operation of a touch function is ensured.
The following describes each portion of the touch substrate according to the embodiment of the present disclosure in detail:
as shown in fig. 2, the substrate 1 may be used to carry the touch electrode layer 2 and other film layers thereon, and meanwhile, the substrate 1 may be used to package a display substrate, i.e. the substrate 1 may be used as a package 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 may be a transparent substrate, and the material may be glass, acryl or other transparent materials; alternatively, the base 1 may include a transparent substrate and a buffer layer laminated on the transparent substrate, and impurities blocking the transparent substrate by the buffer layer may affect the touch electrode layer 2, and of course, the base 1 may also include other film layers, which will not be described in detail herein.
As shown in fig. 2, the touch electrode layer 2 may adopt a self-capacitance principle, that is, a capacitance is generated between the touch electrode layer 2 and a finger or other external touch devices, and a touch position may be determined by a touch driving circuit according to a current generated by a change of the capacitance, for example, the touch electrode layer 2 may include a plurality of electrode blocks, each electrode block may generate a capacitance with the finger, and the touch driving circuit may be connected with each electrode block, and the detailed principle of the self-capacitance touch will not be described herein.
Meanwhile, as shown in fig. 2, in order to reduce the current disturbance of the display substrate on the touch electrode layer 2, the touch electrode layer 2 may be formed into a recess region 201 recessed toward the substrate 1, and a region of the touch electrode layer 2 not recessed toward the substrate 1 is a spacer region 202, where the spacer region 202 separates the recess region 201, that is, the recess region 201 is recessed toward the substrate 1 relative to the spacer region 202. In the direction perpendicular to the substrate 1, due to the existence of the concave region 201, the distance D between the region of the touch electrode layer 2 located in the concave region 201 and the region of the second electrode 9 corresponding to the region can be increased, so as to reduce the current disturbance of the second electrode 9 to the touch electrode layer 2.
Further, as shown in fig. 2, the shape of each recess 201 may be the same, so as to ensure that the distance between each recess 201 of the touch electrode layer 2 and the second electrode 9 is consistent.
In some embodiments of the present disclosure, as shown in fig. 2, in order to form the recess area 201, a plurality of grooves may be disposed at intervals on the substrate 1, and a touch electrode layer 2 conforming to the shape of the substrate 1 is formed on the surface of the substrate 1 where the grooves are disposed, so that the recess area 201 is formed on the inner surface of each groove, and accordingly, the shape and size of the recess area 201 are matched with the grooves. Meanwhile, the region of the touch electrode layer 2 outside the groove forms a spacer 202.
As shown in fig. 2, the protective layer 3 may be disposed on a surface of the touch electrode layer 2 facing away from the substrate 1, and covers the spacer region 202 and fills the recess region 201. The protective layer 3 is made of transparent insulating material, and the material of the protective layer 3 comprises one or more of PI (polyimide) and acrylic, and the protective layer 3 can protect the touch electrode layer 2 and can realize planarization so as to be installed with the display substrate in a box.
The embodiment of the present disclosure provides a method for manufacturing a touch substrate, which may be the touch substrate of any of the above embodiments, and the structure of the touch substrate is not described in detail herein, as shown in fig. 4, the method for manufacturing the touch substrate of the embodiment of the present disclosure includes step S110 and step 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 areas concave towards the substrate and a spacing area for separating the concave areas;
and step S120, forming a protective layer which covers the interval region and fills the concave region on the surface of the touch electrode layer, which is away from the substrate.
The beneficial effects of the manufacturing method of the embodiment of the present disclosure may refer to the beneficial effects of the display substrate described above, 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 substrate 1 may refer to the substrate 1 in the embodiment of the touch substrate, which is not described in detail herein.
In some embodiments of the present disclosure, forming a touch electrode layer on one side of a substrate, i.e., step S110, includes step S1110 and step S1120, wherein:
step S1110, forming a plurality of grooves on the surface of the substrate side at intervals.
As shown in fig. 2, the depth of the recess may be determined in advance according to the difference in height between the two areas of the second electrode 9 corresponding to the barrier rib 7 and the corresponding pixel area in the display substrate, and specific data thereof is not particularly limited. The grooves may be formed by a photolithographic process or other grooving process, so long as the grooves are formed.
In step S1120, a touch electrode layer is formed on the surface of the substrate having the grooves, so as to form concave regions corresponding to the grooves in a one-to-one matching and attaching manner.
As shown in fig. 2, the formation of the touch electrode layer 2 may be performed by a patterning process such as one or more photolithography processes, which is not particularly limited herein. In this process, the touch electrode layer 2 is provided with the surface relief of the groove along with the substrate 1, so that the inner surface of each groove forms a concave area 201, and accordingly, the shape and size of the concave area 201 are matched with those of the groove. Meanwhile, the region of the touch electrode layer 2 outside the groove forms a spacer 202.
In step S120, as shown in fig. 2, the protective layer 3 is made of a transparent insulating material, and the material includes one or more of PI (polyimide) and acryl, and the touch electrode layer 2 can be protected or planarized by the protective layer 3 so as to be mounted on the display substrate. For example, a protective material layer may be formed on the side of the touch electrode layer 2, which is covered by the substrate 1, by coating or other processes, and the protective material layer may fill the recess of the substrate 1 and cover the area of the substrate 1 outside the recess, and then be cured by curing or other processes to form the protective layer 3.
It should be noted that although the steps of the methods of the present disclosure are illustrated in the accompanying drawings in a particular order, this does not require or imply that the steps must be performed in that particular order or that all of the illustrated steps be performed in order to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step to perform, and/or one step decomposed into multiple steps to perform, etc.
The embodiment of the disclosure further provides a touch display panel, as shown in fig. 2, where the touch display panel includes a display substrate and the touch substrate of any of the above embodiments, and the display substrate is disposed opposite to the touch substrate, where:
the structure of the touch substrate may refer to the above embodiments of the touch substrate, and will not be described herein. The display substrate includes a driving back plate 4, a first electrode 5, a pixel defining layer 6, a barrier rib 7, a light emitting layer 8, and a second electrode 9, wherein:
the driving backboard 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 back plate 4 close to the protection layer 3. The pixel defining layer 6 is disposed on a side of the driving back plate 4 near the protective layer 3, and has a pixel region exposing the first electrode 5, and the pixel region is opposite to the spacer 202. The isolation column 7 is disposed on the surface of the pixel defining layer 6 near the protective layer 3, and the recess 201 is opposite to the isolation column 7. The light emitting layer 8 covers the pixel defining layer 6, the isolation pillars 7, and the first electrode 5. The second electrode 9 covers the light emitting layer 8.
The beneficial effects of the touch display panel according to the embodiments of the present disclosure may refer to the beneficial effects of the display substrate described above, and will not be described in detail herein.
The display substrate is described in detail below:
as shown in fig. 2, the driving back plate 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, for example, the driving devices are top gate type thin film transistors: the driving back plate 4 may include a substrate on which thin film transistors distributed in an array are disposed, each thin film transistor 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 electrode is arranged on one side of the active layer, which is away from the substrate; the dielectric layer covers the grid electrode and the grid insulation layer; the source-drain layer is arranged on one side of the dielectric layer, which is away from the substrate, and comprises a source electrode and a drain electrode which are connected to two ends of the active layer, and the drain electrode can be connected with the first electrode 5.
In addition, the driving back plate 4 further includes a planarization layer covering the source-drain layer and the dielectric layer.
As shown in fig. 2, the first electrodes 5 are disposed on a side of the driving back plate 4 close to the protective layer 3, for example, the first electrodes 5 are disposed on a surface of the flat layer facing away from the substrate, and the number of the first electrodes 5 is plural and distributed in an array to act as anodes of the OLED light emitting device.
As shown in fig. 2, the pixel defining layer 6 is disposed on a side of the driving back plate 4 near the protective layer 3, the pixel defining layer 6 has a plurality of pixel regions, the pixel regions are in an open structure, and each pixel region exposes each first electrode 5 in a one-to-one correspondence.
As shown in fig. 2, the isolation column 7 may be disposed on the surface of the pixel defining layer 6 near the protective layer 3, and may be used for supporting the touch substrate, where the cross section of the isolation column 7 in the direction perpendicular to the driving back plate 4 may be trapezoid, rectangular, etc., and the height thereof is not particularly limited herein, as long as the isolation column can abut against the touch substrate, for example, the surface of the isolation column 7 facing away from the driving back plate 4 may abut against the protective layer 3 of the touch substrate. The isolation column 7 is located outside the pixel region, and the isolation column 7 may be opposite to the recess region 201.
The projection of the isolation column 7 on the touch electrode layer 2 is located inside the concave region 201, and the projection of the isolation column 7 is smaller than the concave region 201.
Further, as shown in fig. 2, the projection of the pixel defining layer 6 on the touch electrode layer 2 coincides with the recess region 201, that is, the outlines of the two overlap at least partially, so that the isolation pillars 7 and the pixel defining layer 6 are both located in the range covered by the recess region 201; the projection of the pixel region on the touch electrode layer 2 coincides with the spacing 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 isolation posts 7, and the first electrode 5, and the light emitting layer 8 undulates with the undulation of the contours of the pixel defining layer 6 and the isolation posts 7, being laminated with the first electrode 5 in the pixel region. 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 back plate 4.
As shown in fig. 2, the second electrode 9 covers the light emitting layer 8 and is conformally attached to the light emitting layer 8 such that the height of the area of the second electrode 9 corresponding to the isolation column 7 is greater than the height of the area of the second electrode 9 corresponding to the pixel region. The concave region 201 is opposite to the isolation column 7, and the spacer 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 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 region 201 is parallel to the plane of the substrate 1, the distance between the bottom of the recess region 201 and the region of the second electrode 9 corresponding to the isolation pillar 7 may be defined as a first distance, the distance between the spacer region 202 and the region of the second electrode 9 corresponding to the pixel region may be defined as a second distance, the first distance and the second distance may be equal, and the influence of each region of the second electrode 9 on the touch electrode layer 2 may be consistent, so as to uniformly compensate or eliminate the influence, 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 region 201 may be a stepped groove, specifically, the recessed region 201 may include a first section 2011 and a second section 2012 sequentially penetrating toward the substrate 1 in a depth direction, i.e., the second section 2012 communicates with a bottom of the first section 2011 and extends toward the substrate 1; meanwhile, the projection of the second segment 2012 onto the substrate 1 is smaller than the projection of the first segment 2011 onto the substrate 1. The projections of the first segment 2011 and the pixel defining layer 6 on the driving back plate 4 are coincident, and the projections of the second segment 2012 and the isolation column 7 on the driving back plate 4 are coincident, so that the recess region 201 can have two depths so as to match the heights of the pixel defining layer 6 and the isolation column 7 thereon, and the interference of the area of the second electrode 9 corresponding to the area of the pixel defining layer 6 not covered by the isolation column 7 on the touch electrode layer 2 can be avoided while the interference of the area of the second electrode 9 corresponding to the area of the pixel defining layer 7 on the touch electrode layer 2 is avoided.
Further, as shown in fig. 3, the distance D1 between the bottom of the first section 2011 and the area of the second electrode 9 corresponding to the first section 2011 is equal to the distance D2 between the bottom of the second section 2012 and the area of the second electrode 9 corresponding to the second section 2012, and may be equal to the distance between the spacer 202 and the area of the second electrode 9 located in the pixel area, so that the distance between the touch electrode layer 2 and the second electrode 9 is kept uniform.
The embodiments of the present disclosure further provide a display device, where the display device may include the touch display panel of any of the 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 described herein again. The display device of the present disclosure may be an electronic device such as a mobile phone, a tablet computer, and an electronic paper, so as to implement touch control and display functions, which are not listed here.
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 adaptations, 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 (6)
1. The utility model provides a touch display panel which characterized in that includes display substrate and touch substrate, the touch substrate includes:
a substrate;
the touch electrode layer is arranged on one side of the substrate and is provided with a plurality of concave areas concave towards the substrate and a spacing area for separating the concave areas;
the protective layer is arranged on the surface of the touch electrode layer, which is away from the substrate, and covers the interval region and fills the concave region;
the display substrate includes:
the driving backboard is arranged opposite to the protective layer;
the first electrode is arranged on one side of the driving backboard, which is close to the protective layer;
the pixel definition layer is arranged on one side of the driving backboard, close to the protective layer, 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 the isolation column is opposite to the concave region;
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.
2. The touch display panel according to claim 1, wherein the substrate is provided with a plurality of grooves arranged at intervals, and the shape of the concave areas is matched with the grooves and is attached in the grooves in a one-to-one correspondence manner.
3. The touch display panel of claim 1, wherein the shape of each of the recessed areas is the same.
4. The touch display panel according to claim 1, wherein the recess region includes a first section and a second section that sequentially penetrate toward the substrate in a depth direction, projections of the first section and the pixel defining layer on the driving back plate overlap, and projections of the second section and the isolation column on the driving back plate overlap.
5. The touch display panel according to claim 1, wherein a distance between a bottom of the recess region and a region of the second electrode corresponding to the isolation column 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 is equal to the second distance.
6. A display device comprising the touch display panel of any one of claims 1-5.
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 |
|---|---|
| CN111309193A CN111309193A (en) | 2020-06-19 |
| CN111309193B true CN111309193B (en) | 2023-09-29 |
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| CN112099664B (en) * | 2020-08-25 | 2023-11-21 | 合肥维信诺科技有限公司 | Touch display panel |
| CN112768499B (en) * | 2021-01-13 | 2023-01-24 | 重庆京东方显示技术有限公司 | Organic light-emitting diode display substrate, preparation method and display panel |
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