CN112130690A - Touch display panel and touch display device - Google Patents
Touch display panel and touch display device Download PDFInfo
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- CN112130690A CN112130690A CN201910553561.7A CN201910553561A CN112130690A CN 112130690 A CN112130690 A CN 112130690A CN 201910553561 A CN201910553561 A CN 201910553561A CN 112130690 A CN112130690 A CN 112130690A
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- display panel
- patterned
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- touch display
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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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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/40—OLEDs integrated with touch screens
-
- 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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- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The embodiment of the invention relates to a touch display panel. The touch display panel includes: a display panel; the patterned buffer layer is positioned on the display panel and comprises a plurality of mutually independent pattern blocks; and the touch panel is positioned on the patterned buffer layer. On one hand, after the patterned buffer layer is arranged, when the touch panel is manufactured by using the processes such as photoetching and the like, the thin film packaging layer of the display panel is protected by the patterned buffer layer and is not easily influenced by coating and etching in the processes such as photoetching and the like, so that the damage of the thin film packaging layer is reduced; on the other hand, the patterned buffer layer comprises a plurality of mutually independent pattern blocks, a certain gap exists between the pattern blocks, and when the touch display panel is bent, stress accumulation and transmission between the touch panel and the display panel can be reduced, so that the possibility of touch display panel failure caused by cracks generated by stress accumulation and transmission of the touch display panel is reduced.
Description
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a touch display panel and a touch display device.
Background
With the rapid development of science and technology, the functions of information products are more and more diversified, and the application range of the information products also touches various fields of daily life of people. The early information products mostly use input devices such as keyboard and mouse as the interface for man-machine communication; however, in order to provide users with more convenient and more humanized experience, many information products gradually adopt touch devices as main input devices.
In the related art, in an On Cell TP of an OLED display panel, a touch panel is disposed On the display panel, and the display panel is in direct contact with the touch panel, and when the touch panel is manufactured by using processes such as photolithography, a thin film encapsulation layer of the display panel is susceptible to the influence of processes such as film plating and etching, and thus a certain damage is caused; moreover, when the display panel is bent, stress is easily accumulated and transferred between the display panel and the touch panel, so that cracks are easily generated in the display panel, and the display panel is failed.
Accordingly, there is a need to ameliorate one or more of the problems with the related art solutions described above.
It is noted that this section is intended to provide a background or context to the embodiments of the invention that are recited in the claims. The description herein is not admitted to be prior art by inclusion in this section.
Disclosure of Invention
An object of the present invention is to provide a touch display panel, so as to overcome at least some of the problems caused by the limitations and disadvantages of the related art.
According to a first aspect of the embodiments of the present invention, there is provided a touch display panel, including:
a display panel;
the patterned buffer layer is positioned above the display panel and comprises a plurality of independent pattern blocks;
the touch panel is positioned on the patterned buffer layer.
In an embodiment of the present invention, the display panel includes:
an organic light emitting array substrate;
and the thin film packaging layer covers the organic light-emitting array substrate.
In an embodiment of the present invention, the touch panel includes:
a patterned first conductive layer in direct contact with the patterned buffer layer;
the patterned insulating layer is positioned on the patterned first conductive layer and comprises a plurality of mutually independent pattern blocks;
a patterned second conductive layer over the patterned insulating layer;
and the protective layer is positioned on the patterned second conductive layer and used for protecting the touch panel.
In an embodiment of the invention, the patterned second conductive layer includes a plurality of first touch electrodes extending along a first direction and a plurality of second touch electrodes extending along a second direction; the first direction and the second direction are crossed, and the first direction and the second direction are parallel to the plane of the organic light-emitting array substrate.
In an embodiment of the invention, each of the second touch electrodes includes N disconnected electrode portions, and the patterned first conductive layer includes P bridge structures corresponding to each of the second touch electrodes, where adjacent electrode portions are electrically connected by the corresponding bridge structures, and P ═ (N-1).
In an embodiment of the invention, a through hole is disposed on the pattern block in the patterned insulating layer, and the bridge structure and the second touch electrode are electrically connected through the through hole.
In an embodiment of the invention, an edge of the pattern block in the patterned insulating layer is arc-shaped.
In an embodiment of the invention, the patterning operation is performed on the patterned insulating layer and the patterned buffer layer simultaneously or separately.
In an embodiment of the invention, a process of patterning the patterned insulating layer and the patterned buffer layer is a photolithography process.
In an embodiment of the invention, the patterned buffer layer is an inorganic film layer or a composite film layer.
According to a second aspect of the embodiments of the present invention, a touch display device is provided, which includes the touch display panel according to any one of the embodiments.
The technical scheme provided by the embodiment of the invention can have the following beneficial effects:
in the embodiment of the invention, the patterned buffer layer is arranged between the touch panel and the display panel of the touch display panel through the touch display panel, on one hand, after the patterned buffer layer is arranged, when the touch panel is manufactured by using photoetching and other processes, a thin film packaging layer of the display panel is protected by the buffer layer and is not easily influenced by the photoetching and other processes, such as coating, etching and the like, and the generation of damage to the thin film packaging layer is reduced; on the other hand, the patterned buffer layer comprises a plurality of mutually independent pattern blocks, certain gaps exist among the pattern blocks, when the touch display panel is bent, stress accumulation and transmission between the touch panel and the display panel are reduced, and the possibility that the touch display panel fails due to cracks generated by the stress accumulation and transmission of the touch display panel is reduced.
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 plan view of a touch display panel in the related art;
FIG. 2 illustrates a cross-sectional view of a touch display panel in an exemplary embodiment of the invention;
FIG. 3 shows a schematic plan view of a buffer layer in an exemplary embodiment of the invention;
FIG. 4 is a cross-sectional view of another embodiment of a touch display panel according to the present invention;
FIG. 5 is a cross-sectional view of another embodiment of a touch display panel according to the present invention;
fig. 6 shows a schematic plan view of a patterned second conductive layer in an exemplary embodiment of the invention.
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 examples 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 described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
Furthermore, the drawings are merely schematic illustrations of embodiments of the invention, which are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repetitive description will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities.
In the exemplary embodiment, a touch display panel is first provided. Referring to fig. 2, the touch display panel may include: the display panel 11, the patterned buffer layer 12 and the touch panel 13. The patterned buffer layer 12 is located on the display panel 11 and includes a plurality of independent pattern blocks, and the touch panel 13 is located on the patterned buffer layer 12. Specifically, referring to fig. 3, the plurality of independent pattern blocks may be a plurality of independent pattern blocks with the same size, the display panel 11 may be an OLED display panel, and the touch panel 13 may be integrated with the display panel 11 in an on-cell manner, which is not limited thereto.
Through the touch display panel, the patterned buffer layer 12 is arranged between the touch panel 13 and the display panel 11 of the touch display panel, on one hand, after the patterned buffer layer 12 is arranged, when the touch panel 13 is manufactured by using the processes such as photoetching and the like, the thin film packaging layer 112 of the display panel 11 is protected by the patterned buffer layer 12, is not easily influenced by the processes such as coating, etching and the like in the photoetching and the like, and the generation of damage to the thin film packaging layer is reduced; on the other hand, the patterned buffer layer 12 includes a plurality of mutually independent pattern blocks, and a certain gap exists between the pattern blocks, so that when the touch display panel is bent, stress accumulation and transmission between the touch panel 13 and the display panel 12 are reduced, and the possibility that the touch display panel fails due to cracks generated by the stress accumulation and transmission is reduced.
Next, each part of the above-described touch display panel in the present exemplary embodiment will be described in more detail with reference to fig. 1 to 6.
In one embodiment, as shown with reference to fig. 4 to 5, the display panel 11 may include: the organic light emitting diode display comprises an organic light emitting array substrate 111 and a thin film packaging layer 112, wherein the thin film packaging layer 112 covers the organic light emitting array substrate 111. The organic light emitting array substrate 111 may include a pixel array, a power line, and the like, and the thin film encapsulation layer 112 may include a stack of a plurality of organic layers and inorganic layers, but is not limited thereto.
In one embodiment, referring to fig. 4 to 5, the touch panel 13 may include: a patterned first conductive layer 131 in direct contact with the patterned buffer layer 12; a patterned insulating layer 132 on the patterned first conductive layer 131, including a plurality of independent pattern blocks; a patterned second conductive layer 133 on the patterned insulating layer 132; and a protective layer 134 located on the patterned second conductive layer 133 for protecting the touch panel 13. The plurality of independent pattern blocks may be a plurality of independent pattern blocks having the same size, and the patterned insulating layer 132 may be made of at least one of SiOx or SiNx, but is not limited thereto.
In one embodiment, referring to fig. 6, the patterned second conductive layer 133 includes a plurality of first touch electrodes 1331 extending along a first direction and a plurality of second touch electrodes 1332 extending along a second direction; the first direction and the second direction are crossed, and the first direction and the second direction are parallel to the plane of the organic light emitting array substrate 111. Specifically, the first touch electrode 1331 and the second touch electrode 1332 are disposed on the same layer, and may be one and the other of a touch driving electrode and a touch sensing electrode, respectively, for example, when the first touch electrode is a touch driving electrode, the second touch electrode is a touch sensing electrode; when the first touch electrode is a touch sensing electrode, the second touch electrode is a touch driving electrode, which is not limited to this. The number of pattern blocks in the patterned insulating layer 132 may be determined according to the number of the first touch electrodes 1331 and the second touch electrodes 1332, for example, the patterned second conductive layer 133 includes X first touch electrodes 1331 extending along the first direction and Y second touch electrodes 1332 extending along the second direction, and the number of pattern blocks in the patterned insulating layer 132 may be X × Y, but is not limited thereto.
The On Cell touch panel of the OLED display panel is very close to the Cathode (Cathode) of the OLED display panel, which easily causes a relatively large capacitance between the Tx channel and Rx channel of the On Cell touch panel and the Cathode, so that the resistance capacitance Delay (RC Delay) of Tx or Rx is relatively large. The first touch electrode and the second touch electrode are arranged on the same layer and are arranged on the patterned first conductive layer and the insulating layer, so that the distance between the first touch electrode and the cathode of the display panel and the distance between the second touch electrode and the cathode of the display panel are increased, and the problems can be relatively reduced.
In one embodiment, referring to fig. 4 to 6, each of the second touch electrodes 1332 may include N disconnected electrode portions, and the patterned first conductive layer 131 may include P bridge structures 1311 corresponding to each of the second touch electrodes 1332, wherein adjacent electrode portions (13321, 13322) are electrically connected through the corresponding bridge structures 1311, and P ═ N-1. The bridge structure 1311 may be formed of a conductive material, but is not limited thereto.
In one embodiment, a through hole 1321 may be disposed on the pattern block in the patterned insulating layer 132, and the bridge structure 1311 and the second touch electrode 1332 are electrically connected through the through hole 1321. Specifically, as shown in fig. 4 to 6, there may be 2 through holes 1321 on each pattern block of the patterned insulating layer, which correspond to two adjacent electrode portions (13321, 13322), respectively, and the 2 adjacent electrode portions (13321, 13322) extend through the 2 through holes 1321 to be electrically connected to the bridging structure 1311, but is not limited thereto.
In one embodiment, the edges of the pattern blocks in the patterned insulating layer 132 may be arc-shaped. Specifically, the edges of the pattern blocks in the patterned insulating layer 132 are set to be smooth shapes without sharp corners, so that the possibility that stress is concentrated at the sharp corners to cause cracks can be reduced, but the method is not limited to this.
In one embodiment, the patterning operation may be performed simultaneously or separately for the patterned insulating layer 132 and the patterned buffer layer 12. Specifically, referring to fig. 5, the patterned insulating layer 132 and the patterned buffer layer 12 may be patterned simultaneously, where the pattern blocks in the patterned insulating layer 132 are the same as the pattern blocks in the patterned buffer layer 12; referring to fig. 4, the patterned insulating layer 132 and the patterned buffer layer 12 may be patterned separately, and the pattern blocks in the patterned insulating layer 132 and the pattern blocks in the patterned buffer layer 12 are different, but not limited thereto.
In one embodiment, the process of patterning the patterned insulating layer 132 and the patterned buffer layer 12 may be a photolithography process. Specifically, the photolithography process may be a photolithography process, in which the photoresist is exposed to light by photolithography, and then the portion to be removed is removed by dry etching, but the photolithography process is not limited thereto. Dry etching is a technique for etching a thin film using plasma, and when gas exists in the form of plasma, it has two characteristics: on one hand, the chemical activity of the gases in the plasma is much stronger than that of the gases in a normal state, and the gases can react with the materials more quickly by selecting proper gases according to the difference of the etched materials, so that the aim of etching removal is fulfilled; on the other hand, the electric field can be used for guiding and accelerating the plasma, so that the plasma has certain energy, and when the plasma bombards the surface of the etched object, atoms of the etched object material can be knocked out, thereby achieving the purpose of etching by utilizing physical energy transfer.
In one embodiment, the patterned buffer layer 12 may be an inorganic film layer or a composite film layer. Specifically, the patterned buffer layer 12 may be made of an inorganic material layer such as SiNx or SiO2, or may be made of a composite film layer of an organic material layer and SiNx or SiO2, but is not limited thereto.
Through the touch display panel, the patterned buffer layer 12 is arranged between the touch panel 13 and the display panel 11 of the touch display panel, on one hand, after the patterned buffer layer 12 is arranged, when the touch panel 13 is manufactured by using the processes such as photoetching and the like, the thin film packaging layer 112 of the display panel 11 is protected by the patterned buffer layer 12, is not easily influenced by the processes such as coating, etching and the like in the photoetching and the like, and the generation of damage to the thin film packaging layer is reduced; on the other hand, the patterned buffer layer 12 includes a plurality of independent pattern blocks, and a certain gap exists between the pattern blocks, so that when the touch display panel is bent, stress accumulation and transmission between the touch panel 13 and the display panel 11 are reduced, and the possibility that the touch display panel fails due to cracks generated by the stress accumulation and transmission is reduced.
According to a second aspect of the embodiments of the present invention, a touch display device is provided, which may include the touch display panel of any one of the embodiments.
The touch display device provided by the above embodiment may include the above touch display panel, and based on the technical effects of the above touch display panel, the touch display device includes the following beneficial effects: on one hand, after the patterned buffer layer 12 is arranged, when the touch panel 13 is manufactured by using the processes such as photolithography and the like, the thin film encapsulation layer 112 of the display panel 11 is protected by the patterned buffer layer 12, and is not easily affected by the processes such as film coating and etching in the processes such as photolithography and the like, so that the generation of damage to the thin film encapsulation layer is reduced; on the other hand, the patterned buffer layer 12 includes a plurality of independent pattern blocks, and a certain gap exists between the pattern blocks, so that when the touch display panel is bent, stress accumulation and transmission between the touch panel 13 and the display panel 11 are reduced, and the possibility that the touch display panel fails due to cracks generated by the stress accumulation and transmission is reduced.
It is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like in the foregoing description are used for indicating or indicating the orientation or positional relationship illustrated in the drawings, and are used merely for convenience in describing embodiments of the present invention and for simplifying the description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the embodiments of the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In embodiments of the invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or the first and second features being in contact, not directly, but via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
Claims (11)
1. A touch display panel, comprising:
a display panel;
the patterned buffer layer is positioned above the display panel and comprises a plurality of independent pattern blocks;
the touch panel is positioned on the patterned buffer layer.
2. The touch display panel of claim 1, wherein the display panel comprises:
an organic light emitting array substrate;
and the thin film packaging layer covers the organic light-emitting array substrate.
3. The touch display panel according to claim 1, wherein the touch panel comprises:
a patterned first conductive layer in direct contact with the patterned buffer layer;
the patterned insulating layer is positioned on the patterned first conductive layer and comprises a plurality of mutually independent pattern blocks;
a patterned second conductive layer over the patterned insulating layer;
and the protective layer is positioned on the patterned second conductive layer and used for protecting the touch panel.
4. The touch display panel according to claim 3, wherein the patterned second conductive layer comprises a plurality of first touch electrodes extending along a first direction and a plurality of second touch electrodes extending along a second direction; the first direction and the second direction are crossed, and the first direction and the second direction are parallel to the plane of the organic light-emitting array substrate.
5. The touch display panel according to claim 4, wherein each of the second touch electrodes includes N disconnected electrode portions, and the patterned first conductive layer includes P bridge structures corresponding to each of the second touch electrodes, wherein adjacent electrode portions are electrically connected by the corresponding bridge structures, and P ═ N-1.
6. The touch display panel according to claim 5, wherein a via hole is disposed on the pattern block in the patterned insulating layer, and the bridge structure and the second touch electrode are electrically connected through the via hole.
7. The touch display panel of claim 3, wherein the edges of the pattern blocks in the patterned insulating layer are arc-shaped.
8. The touch display panel of claim 3, wherein the patterned insulating layer and the patterned buffer layer are patterned simultaneously or separately.
9. The touch display panel of claim 8, wherein the patterning process of the patterned insulating layer and the patterned buffer layer is a photolithography process.
10. The touch display panel according to claims 1 to 9, wherein the patterned buffer layer is an inorganic film layer or a composite film layer.
11. A touch display device comprising the touch display panel according to any one of claims 1 to 10.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910553561.7A CN112130690A (en) | 2019-06-25 | 2019-06-25 | Touch display panel and touch display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910553561.7A CN112130690A (en) | 2019-06-25 | 2019-06-25 | Touch display panel and touch display device |
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| CN112130690A true CN112130690A (en) | 2020-12-25 |
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| CN201910553561.7A Pending CN112130690A (en) | 2019-06-25 | 2019-06-25 | Touch display panel and touch display device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112909145A (en) * | 2021-01-20 | 2021-06-04 | 深圳市华星光电半导体显示技术有限公司 | Display panel and preparation method thereof |
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| CN106293197A (en) * | 2015-06-26 | 2017-01-04 | 三星显示有限公司 | Flexible display apparatus |
| CN106919290A (en) * | 2017-03-22 | 2017-07-04 | 上海天马微电子有限公司 | Touch display panel and touch display device |
| CN108920012A (en) * | 2018-08-01 | 2018-11-30 | 京东方科技集团股份有限公司 | A kind of touch-control display panel, display device and preparation method thereof |
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2019
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106293197A (en) * | 2015-06-26 | 2017-01-04 | 三星显示有限公司 | Flexible display apparatus |
| CN106919290A (en) * | 2017-03-22 | 2017-07-04 | 上海天马微电子有限公司 | Touch display panel and touch display device |
| CN108920012A (en) * | 2018-08-01 | 2018-11-30 | 京东方科技集团股份有限公司 | A kind of touch-control display panel, display device and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112909145A (en) * | 2021-01-20 | 2021-06-04 | 深圳市华星光电半导体显示技术有限公司 | Display panel and preparation method thereof |
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Application publication date: 20201225 |