CN112130691A - Touch display panel and display device - Google Patents
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- CN112130691A CN112130691A CN201910554340.1A CN201910554340A CN112130691A CN 112130691 A CN112130691 A CN 112130691A CN 201910554340 A CN201910554340 A CN 201910554340A CN 112130691 A CN112130691 A CN 112130691A
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- 238000005538 encapsulation Methods 0.000 claims abstract description 17
- 230000006698 induction Effects 0.000 claims abstract description 3
- 239000000758 substrate Substances 0.000 claims description 39
- 239000010408 film Substances 0.000 claims description 32
- 239000010409 thin film Substances 0.000 claims description 18
- 239000011159 matrix material Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 5
- 239000010410 layer Substances 0.000 description 144
- 230000000694 effects Effects 0.000 description 11
- 238000000034 method Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 5
- 239000012790 adhesive layer Substances 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910010272 inorganic material Inorganic materials 0.000 description 2
- 239000011147 inorganic material Substances 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 229910001111 Fine metal Inorganic materials 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
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- 238000005530 etching Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 238000001755 magnetron sputter deposition Methods 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a 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
Abstract
The embodiment of the disclosure relates to a touch display panel and a display device. The display panel includes: an OLED display panel; a touch electrode layer configured to be formed on an encapsulation layer of the OLED display panel; the shading layer is constructed and formed in the touch electrode layer and comprises a plurality of independent shading blocks for at least covering and shading a plurality of driving electrodes and induction electrodes in the touch electrode layer; the projection area of each light shielding block is positioned in a preset distance range outside the edge of the corresponding light-emitting pixel unit area in the light-emitting layer of the OLED display panel.
Description
Technical Field
The embodiment of the disclosure relates to the technical field of display, and in particular relates to a touch display panel and a touch display device.
Background
Organic Light Emitting Diode (OLED) display devices have many advantages such as self-luminescence, low driving voltage, high luminous efficiency, short response time, and wide temperature range, and are considered to be the most promising display devices in the industry.
The OLED touch display device may generally include an OLED display screen, a touch screen, a circular polarizer, and a cover plate. In order to improve the folding endurance of the OLED touch display device and reduce the thickness, the selectable schemes in the related art at least include: the touch screen, the Black Matrix (BM) layer and the color filter cf (color filter) layer are fabricated on a thin film substrate and then attached to the OLED screen body.
According to the scheme, the thickness of the OLED touch display device can be reduced, and the bending resistance effect is improved. However, if the touch screen and the BM layer + CF layer are fabricated on the thin film substrate and then attached to the OLED screen body, a certain position deviation exists during the attachment, and in order to prevent the BM layer from shielding the light emitting area of the OLED due to the position deviation, the BM layer must be avoided, so that the BM area needs to be reduced, and the antireflection effect of the BM layer + CF layer replacing the circular polarizer is weakened. 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 disclosure 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 embodiments of the present disclosure is to provide a touch display panel and a touch display device, 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 disclosure, there is provided a touch display panel, including:
an OLED display panel;
a touch electrode layer configured to be formed on an encapsulation layer of the OLED display panel;
the shading layer is constructed and formed in the touch electrode layer and comprises a plurality of independent shading blocks for at least covering and shading a plurality of driving electrodes and induction electrodes in the touch electrode layer;
the projection area of each light shielding block is positioned in a preset distance range outside the edge of the corresponding light-emitting pixel unit area in the light-emitting layer of the OLED display panel.
In an embodiment of the present disclosure, the touch electrode layer at least includes a Metal Mesh electrode layer.
In an embodiment of the present disclosure, the predetermined distance range is within 0.5 um.
In an embodiment of the disclosure, the light-shielding layer is a black matrix layer, and a first planarization layer is disposed on the black matrix layer.
In an embodiment of the present disclosure, the method further includes:
and the color film substrate is bonded with the first planarization layer in an opposite adhesion manner through the bonding layer.
In an embodiment of the present disclosure, the color filter substrate includes:
a thin film substrate;
the color film layer is positioned on the surface of the film substrate and corresponds to the light emitting layer of the OLED display panel;
and a second planarization layer is arranged on the color film layer and is bonded with the first planarization layer through the bonding layer.
In an embodiment of the present disclosure, a hardened layer is disposed on the thin film substrate.
In an embodiment of the present disclosure, the hardening layer is located between the thin film substrate and the color film layer; and/or, the hardened layer is located on the surface of one side of the film substrate, which deviates from the color film layer.
In an embodiment of the present disclosure, the encapsulation layer of the OLED display panel is a thin film encapsulation layer.
According to a second aspect of the embodiments of the present disclosure, a touch display device is provided, which includes the touch display panel described in any of the embodiments above.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
in the embodiment of the disclosure, the touch electrode layer is directly configured and formed on the encapsulation layer of the OLED display panel, in addition, the light shielding layer is configured and formed in the touch electrode layer and includes a plurality of independent light shielding blocks for at least covering and shielding a plurality of driving electrodes and sensing electrodes in the touch electrode layer, and a projection area of each light shielding block is located within a preset distance range outside an edge of a corresponding light emitting pixel unit area in a light emitting layer of the OLED display panel; in this way, the light shielding layer is directly manufactured on the screen body of the OLED display panel to shield the touch electrode and to be as close as possible to the edge of the luminous pixel unit area such as the R, G, B luminous area, so that the situation that the shielding area is avoided in design due to the need of considering the attaching precision in the related technology can be avoided, the shielding area of the light shielding layer such as a BM layer can be increased, the shielding capability of the light shielding layer on reflected light is improved, and the effect of reducing the reflected light is improved; in addition, the touch layer is directly manufactured On the packaging layer of the OLED, so that the Bonding Pad of the touch layer and the Bonding Pad of the OLED display panel are led to the same layer, and only one-time Bonding process of a Flexible Printed Circuit Board (FPC) or a Chip On Film (COF) is needed, so that one-time Bonding process can be reduced, the touch FPC is saved, and the cost 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 partial cross-sectional view illustrating an OLED touch display device in the related art;
FIG. 2 is a schematic partial cross-sectional view of a touch display panel according to an exemplary embodiment of the disclosure;
fig. 3 is a schematic diagram illustrating positions of a touch electrode and a light shielding block in a touch display panel according to an embodiment of the disclosure.
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 disclosure and 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 related art, as shown in fig. 1, a display panel of the touch display device may include an exemplary substrate 101, an array substrate 102, a pixel light emitting layer (R, G, B), and an encapsulation layer 103, and other film layers and structures are not shown, which may refer to the prior art. The touch screen may include a thin film substrate 108, a CF layer 107 and a light shielding layer such as a BM layer fabricated on the same layer and on the thin film substrate 108, and then a flat layer 106 and a touch electrode layer 105 are disposed, and then two independent components are attached to a screen body of a display panel such as an OLED display panel through an adhesive layer 104, that is, to an upper surface of an encapsulation layer 103.
According to the scheme, the thickness of the OLED touch display device can be reduced, and the bending resistance effect is improved. However, if the touch screen, the BM layer and the CF layer 107 are fabricated on the film substrate 108 and then attached to the OLED screen body, a certain positional deviation exists during attaching, and in order to prevent the BM layer from shielding the OLED light-emitting area (for example, R, G, B area) due to the positional deviation, the BM layer design in the touch screen must be avoided, so that the BM area needs to be reduced, and the antireflection effect of the BM layer and the CF layer 107 after replacing the circular polarizer is weakened.
In the exemplary embodiment, a touch display panel is first provided. Referring to fig. 2, the display panel may include an OLED display panel, a touch electrode layer 105, and a light shielding layer 171. The OLED display panel may include a substrate 101, an array substrate 102, a pixel light emitting layer (R, G, B), and an encapsulation layer 103. The touch electrode layer 105 is directly formed on the encapsulation layer 103 of the OLED display panel. The light shielding layer is configured to be formed in the touch electrode layer 105, and includes a plurality of independent light shielding blocks 171 for at least covering and shielding the plurality of driving electrodes 151 and the plurality of sensing electrodes in the touch electrode layer 105. The projection area of each light shielding block 171 is located within a predetermined distance range outside the edge of the corresponding light-emitting pixel unit area (e.g., R, G, B area) in the light-emitting layer of the OLED display panel.
Through the touch display panel in the above embodiment, on one hand, the light shielding layer is directly manufactured on the screen body of the OLED display panel to shield the touch electrode and to be as close as possible to the edge of the light emitting pixel unit area such as R, G, B light emitting area, so that it is avoided that the shielding area is avoided in design due to the need of considering the fitting precision in the related art, and therefore the shielding area of the light shielding layer such as a BM layer can be increased, the shielding capability of the light shielding layer on reflected light is improved, and the antireflection effect is improved. On the other hand, the touch layer is directly manufactured on the packaging layer of the OLED, so that the Bonding Pad of the touch layer and the Bonding Pad of the OLED display panel are led to the same layer, and only one FPC Bonding process or COF Bonding process is needed, so that one Bonding process can be reduced, the touch FPC is saved, and the cost 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 3.
In an embodiment of the present disclosure, the specific film structure in the OLED display panel may refer to the prior art, and is not described herein again. As shown in fig. 2, the OLED display panel may include an encapsulation layer 103, for example, in an embodiment of the present disclosure, the encapsulation layer 103 of the OLED display panel may be a thin film encapsulation layer. Specifically, the thin film encapsulation layer may include at least an inorganic material layer, an organic material layer, and an inorganic material layer, which are sequentially stacked, but is not limited thereto.
In this embodiment, the touch electrode layer 105 is directly formed on the encapsulation layer 103 of the OLED display panel, and the manufacturing process thereof may refer to the prior art, such as vacuum evaporation, etching, and magnetron sputtering. For example, in an embodiment of the present disclosure, the touch electrode layer 105 may include at least a Metal Mesh electrode layer. Specifically, for example, Metal Mesh may be formed by using Metal or alloy material such as Mo, Al, TiAlTi, MoAlMo, etc., but is not limited thereto. As a conductive material, Metal Mesh can form extremely fine Metal grid lines on a substrate through various processes, and the conductive effect is far superior to that of the traditional ITO. The touch electrode layer may include a plurality of driving electrodes Tx and sensing electrodes Rx that are mutually crossed and insulated, which are referred to in the prior art and are not described herein again.
The light shielding layer is configured to be formed in the touch electrode layer 105 as a black matrix BM layer, and as shown in fig. 3, the light shielding layer may include a plurality of independent light shielding blocks 171 for covering and shielding at least the driving electrodes 151, i.e., Tx electrodes, and the sensing electrodes, i.e., Rx electrodes, in the touch electrode layer 105. The projection area of each light shielding block 171 is located within a preset distance range outside the edge of the corresponding light-emitting pixel unit area in the light-emitting layer of the OLED display panel. That is, the structured light-shielding layer, such as BM, shields the touch electrode and is as close as possible to the edge of the light-emitting pixel unit area, such as R, G, B light-emitting area, in the OLED display panel, thereby avoiding shielding the light-emitting area of the OLED display panel and improving the display effect.
In an embodiment of the present disclosure, the preset distance range is within 0.5 um. Specifically, because the alignment accuracy of the exposure machine is less than 0.5um, the BM of the structure is extended by 0.5um for example relative to the peripheral edge of the R, G, B light-emitting region in the OLED display panel, so that the BM is well prevented from shielding the R, G, B light-emitting region, and the display effect is improved.
In an embodiment of the present disclosure, a first planarization layer 106' is disposed on the black matrix layer. That is, a planarization layer can be selectively added on the BM layer to improve the bonding quality of the subsequent color film substrate. For example, the planarization layer may be made of oc (over coat) material, but is not limited thereto.
In an embodiment of the disclosure, the touch display panel may further include a color film substrate, and the color film substrate is bonded to the first planarization layer 106' through the bonding layer 104. For example, in an embodiment of the present disclosure, the color filter substrate may include a thin film substrate 108 and a color filter CF layer. The color film CF layer is located on the surface of the thin film substrate 108 and corresponds to the light emitting layer of the OLED display panel. Illustratively, the CF layer 107 may include R, G, B light filtering regions corresponding to the R, G, B light emitting regions in the light emitting layer of the OLED display panel to improve the final display effect.
For example, a second planarization layer 106 may be disposed on the color film layer, and the second planarization layer 106 and the first planarization layer 106' are bonded by the adhesive layer 104. The second planarization layer 106 can also be made of oc (over coat) material, but is not limited thereto. In this embodiment, the OLED panel body with the touch electrode layer and the BM layer and the thin film substrate with the CF layer are attached to each other through the adhesive layer, and the two planarization layers are disposed therein, so that the attachment quality can be improved.
In an embodiment of the disclosure, the film substrate 108 may be made of a transparent material, such as a polyimide film pi (polyimide film) substrate, but is not limited thereto. The film substrate 108 may be provided with a hardened layer (not shown). For example, in an embodiment of the present disclosure, the hardening layer is located between the thin film substrate 108 and the color film layer. Or, the hardened layer is located on the surface of one side of the film substrate 108, which deviates from the color film layer. Alternatively, the surfaces of two opposite sides of the film substrate 108 are provided with hardened layers so as to be determined according to specific requirements. In this embodiment, the hardened layer may be formed by using various existing hardened coating materials, and the specific preparation process may refer to the prior art. The hardened layer can improve the hardness, rigidity and other properties of the film substrate, so that the film substrate 108 with the hardened layer and the CF layer 107 can be used as a film cover plate to replace a glass cover plate in the related art, and the thickness of the whole display module can be reduced to a certain extent.
An embodiment of the present disclosure further provides a touch display device, including the touch display panel described in any of the above embodiments. For the touch display panel, reference may be made to the detailed description in the foregoing embodiments, which are not repeated herein.
In addition, the light shielding layer is configured to be formed in the touch electrode layer and includes a plurality of independent light shielding blocks for at least covering and shielding a plurality of driving electrodes and sensing electrodes in the touch electrode layer, and a projection area of each light shielding block is located within a preset distance range outside an edge of a corresponding light emitting pixel unit area in a light emitting layer of the OLED display panel; in this way, the light shielding layer is directly manufactured on the screen body of the OLED display panel to shield the touch electrode and to be as close as possible to the edge of the light emitting pixel unit area such as the R, G, B light emitting area, so that the situation that the shielding area is avoided in design due to the need of considering the attaching precision in the related technology can be avoided, the shielding area of the light shielding layer such as BM can be increased, the shielding capability of the light shielding layer on reflected light is improved, and the antireflection effect is improved; in addition, the touch layer is directly manufactured on the packaging layer of the OLED, so that the Bonding Pad of the touch layer and the Bonding Pad of the OLED display panel are led to the same layer, and only one FPC Bonding process or COF Bonding process is needed, so that one Bonding process can be reduced, the touch FPC is saved, and the cost 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, merely for the convenience of describing the disclosed embodiments and for simplifying the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and therefore should not be considered limiting of the disclosed embodiments.
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 disclosure, "a plurality" means two or more unless specifically limited otherwise.
In the embodiments of the present disclosure, unless otherwise specifically stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present disclosure can be understood by those of ordinary skill in the art as appropriate.
In the embodiments of the present disclosure, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or may comprise 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 present disclosure. 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 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 display panel, comprising:
an OLED display panel;
a touch electrode layer configured to be formed on an encapsulation layer of the OLED display panel;
the shading layer is constructed and formed in the touch electrode layer and comprises a plurality of independent shading blocks for at least covering and shading a plurality of driving electrodes and induction electrodes in the touch electrode layer;
the projection area of each light shielding block is positioned in a preset distance range outside the edge of the corresponding light-emitting pixel unit area in the light-emitting layer of the OLED display panel.
2. The touch display panel of claim 1, wherein the touch electrode layer comprises a Metal Mesh electrode layer.
3. The touch display panel of claim 2, wherein the predetermined distance is within 0.5 um.
4. The touch display panel of claim 3, wherein the light-shielding layer is a black matrix layer, and a first planarization layer is disposed on the black matrix layer.
5. The touch display panel of claim 4, further comprising:
and the color film substrate is bonded with the first planarization layer in an opposite adhesion manner through the bonding layer.
6. The touch display panel according to claim 5, wherein the color filter substrate comprises:
a thin film substrate;
the color film layer is positioned on the surface of the film substrate and corresponds to the light emitting layer of the OLED display panel;
and a second planarization layer is arranged on the color film layer and is bonded with the first planarization layer through the bonding layer.
7. The touch display panel of claim 6, wherein the thin film substrate is provided with a hardened layer.
8. The touch display panel of claim 7, wherein the hardening layer is located between the thin film substrate and the color film layer; and/or, the hardened layer is located on the surface of one side of the film substrate, which deviates from the color film layer.
9. The touch display panel of claim 7, wherein the encapsulation layer of the OLED display panel is a thin film encapsulation layer.
10. A touch display device comprising the touch display panel according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910554340.1A CN112130691A (en) | 2019-06-25 | 2019-06-25 | Touch display panel and display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910554340.1A CN112130691A (en) | 2019-06-25 | 2019-06-25 | Touch display panel and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112993185A (en) * | 2021-02-04 | 2021-06-18 | 京东方科技集团股份有限公司 | Display panel and display module |
| CN113113454A (en) * | 2021-03-26 | 2021-07-13 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
| CN114237422A (en) * | 2021-12-14 | 2022-03-25 | 武汉华星光电半导体显示技术有限公司 | Touch display panel and display device |
| CN116819837A (en) * | 2023-08-25 | 2023-09-29 | 惠科股份有限公司 | Display panel, preparation method thereof and display device |
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| CN112993185A (en) * | 2021-02-04 | 2021-06-18 | 京东方科技集团股份有限公司 | Display panel and display module |
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Application publication date: 20201225 |
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| RJ01 | Rejection of invention patent application after publication |