CN106527790B - Display panel, display device and manufacturing method of display panel - Google Patents
Display panel, display device and manufacturing method of display panel Download PDFInfo
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- CN106527790B CN106527790B CN201610930083.3A CN201610930083A CN106527790B CN 106527790 B CN106527790 B CN 106527790B CN 201610930083 A CN201610930083 A CN 201610930083A CN 106527790 B CN106527790 B CN 106527790B
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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
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
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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
- 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
Abstract
The invention provides a display panel, a display device and a manufacturing method of the display panel, wherein the display panel comprises: a substrate; a display layer on one side of the substrate; the packaging layer is positioned on one side of the display layer, which is far away from the substrate; the touch control layer comprises a first touch control electrode layer, an insulating layer and a second touch control electrode layer, the first touch control electrode layer is positioned on one side of the packaging layer, which is far away from the display layer, the insulating layer is positioned on one side of the first touch control electrode layer, which is far away from the packaging layer, and the second touch control electrode layer is positioned on one side of the insulating layer, which is far away from the first touch control electrode layer; the lambda/4 wave plate is positioned on one side, away from the insulating layer, of the second touch electrode layer; and the linear polarizer is positioned on one side of the lambda/4 wave plate, which is deviated from the second touch electrode layer. The invention provides a technical scheme for manufacturing a touch layer by taking a lambda/4 wave plate of a circular polaroid as a substrate, so that the overall thickness of a display panel is reduced, and the bending property of the display panel is enhanced; the display panel has fewer structural components, and the cost is reduced.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel, a display device and a manufacturing method of the display panel, wherein the display panel and the display device are used for reducing the overall thickness by taking a lambda/4 wave plate as a touch substrate.
Background
As an input medium, the touch screen is the simplest, convenient and natural man-machine interaction mode at present. Integrating touch control functions on display devices has become a hot research and development focus of more and more display manufacturers.
There are various types of touch screens in the prior art, and among them, capacitive touch screens are widely used due to their characteristics of operation, wear resistance, low maintenance cost, and the like.
Disclosure of Invention
In view of the problems in the prior art, an object of the present invention is to provide a display panel, in which a dual-layer touch electrode layer is formed on one side of a λ/4 wave plate of a circular polarizer, and the middle of the dual-layer touch electrode layer is separated by an insulating layer to form an embedded touch, so as to reduce the overall thickness and cost of the display panel.
An embodiment of the present invention provides a display panel, including:
a substrate;
a display layer on one side of the substrate;
the packaging layer is positioned on one side of the display layer, which is far away from the substrate;
the touch control layer comprises a first touch control electrode layer, an insulating layer and a second touch control electrode layer, the first touch control electrode layer is positioned on one side, away from the display layer, of the packaging layer, the insulating layer is positioned on one side, away from the packaging layer, of the first touch control electrode layer, and the second touch control electrode layer is positioned on one side, away from the first touch control electrode layer, of the insulating layer;
the lambda/4 wave plate is positioned on one side, away from the insulating layer, of the second touch electrode layer;
and the linear polarizer is positioned on one side of the lambda/4 wave plate, which is deviated from the second touch electrode layer.
Optionally, the second touch electrode layer is in direct contact with the λ/4 wave plate.
Optionally, the material of the λ/4 wave plate comprises cyclic olefin polymer or polycarbonate.
Optionally, the thickness of the λ/4 wave plate is 30um to 50 um.
Optionally, the first touch electrode layer and the second touch electrode layer include a metal electrode layer or an indium tin oxide transparent conductive film layer, and the metal electrode layer includes a molybdenum electrode layer, a copper electrode layer or a nano silver electrode layer.
Optionally, the first touch electrode layer is a touch driving electrode layer, the second touch electrode layer is a touch sensing electrode layer, the first touch electrodes in the first touch electrode layer are arranged in a first direction, the first touch electrodes in the second touch electrode layer are arranged in a second direction, and the first direction and the second direction are staggered.
Optionally, the insulating layer comprises an organic insulating layer comprising a polyethylene terephthalate insulating layer and/or an inorganic insulating layer comprising a silicon nitride insulating layer, a silicon oxide insulating layer, or a zirconium oxide insulating layer.
Optionally, the thickness of the insulating layer is 10nm to 10 um.
Optionally, the insulating layer includes an organic insulating layer and/or an inorganic insulating layer, the thickness of the inorganic insulating layer is 200nm to 400nm, and the thickness of the organic insulating layer is 800nm to 2 um.
Optionally, the linear polarizer further comprises a lambda/2 wave plate positioned between the lambda/4 wave plate and the linear polarizer.
The embodiment of the invention also relates to a display device which comprises the display panel.
The embodiment of the invention also relates to a preparation method of the display panel, which comprises the following steps:
providing a substrate;
forming a display layer on one side of the substrate;
forming an encapsulation layer on one side of the display layer, which is far away from the substrate;
providing a linear polarizer;
forming a lambda/4 wave plate on one side of the linear polarizer;
forming a second touch electrode layer on one side of the lambda/4 wave plate, which is far away from the linear polarizer;
forming an insulating layer on one side, away from the lambda/4 wave plate, of the second touch electrode layer;
forming a first touch electrode layer on one side of the insulating layer, which is far away from the second touch electrode layer;
and merging one side of the first touch electrode layer, which is far away from the insulating layer, with one side of the packaging layer, which is far away from the display layer.
Optionally, the material of the λ/4 wave plate comprises cyclic olefin polymer or polycarbonate.
Optionally, the thickness of the λ/4 wave plate is 30um to 50 um.
Optionally, a roll-to-roll process is adopted to form the second touch electrode layer.
The display panel, the display device and the manufacturing method of the display panel provided by the invention have the following advantages:
the invention provides a technical scheme for manufacturing a touch layer by taking a lambda/4 wave plate of a circular polaroid as a substrate, wherein the touch layer adopts double-layer touch electrodes, the middle part of the touch layer is separated by an insulating layer to form embedded touch, a touch electrode layer is directly contacted with the lambda/4 wave plate without additionally arranging a touch substrate, the integral thickness of a display panel is reduced, and the bending property of the display panel is enhanced; the display panel has fewer structural components, and a touch layer is directly formed on the lambda/4 wave plate, so that the process is simpler, the production efficiency is improved, and the cost is reduced; the lambda/4 wave plate is used as the substrate to form the touch layer, so that the function realization of the lambda/4 wave plate is not influenced, the arrangement of functional devices in the packaging layer is not influenced, and meanwhile, the technical scheme also has wide application range correspondingly as the lambda/4 wave plate is widely applied to various display panels.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of a display panel with a touch layer;
FIG. 2 is a schematic view of a circular polarizer;
FIG. 3 is a schematic structural diagram of a touch layer;
FIG. 4 is a schematic diagram of a display panel according to an embodiment of the invention;
FIG. 5 is a schematic diagram of a display panel according to another embodiment of the present invention;
fig. 6 is a schematic diagram of forming a touch layer on a λ/4 wave plate according to an 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 embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their repetitive description will be omitted.
Fig. 1 is a schematic structural diagram of a display panel with a touch layer. The display panel comprises, from bottom to top in the z-direction in the figure: the display device comprises a substrate 1 ', a display layer 2 ', an encapsulation layer 3 ', an adhesive layer 4 ', a circular polarizer 5 ', a touch layer 6 ' and a protective film 7 '. The touch layer 6 'and the circular polarizer 5' both have independent substrate film layers, and the substrate film layer material of the touch layer is generally PET (polyethylene terephthalate) or COP (cyclic olefin polymer).
Fig. 2 is a schematic structural diagram of the circular polarizer 5'. The circular polarizer 5' generally comprises, from bottom to top in the z-direction in the figure: a lambda/4 wave plate 51 'and a linear polarizer 52'. In addition, a lambda/2 wave plate 53 ' may be provided between the lambda/4 wave plate 51 ' and the linear polarizer 52 '. The λ/4 wave plate 51 'and the λ/2 wave plate 53' together form a retardation film, and the material of the retardation film is generally COP (cyclic olefin polymer).
As shown in fig. 3, a schematic structural diagram of a mutual capacitance touch layer is shown, which includes a first touch electrode layer 61 ', an insulating layer 62', a second touch electrode layer 63 ', and a touch substrate film layer 64'. The position of the touch substrate film layer 64' is different according to the formation sequence of the electrode layers in the touch layer.
The inventors have found that the display panel using the structures shown in fig. 1 to 3 has the following problems:
(1) because the touch layer 6 'and the circular polarizer 5' are both provided with independent substrate film layers, more film layers are formed in the display panel, the overall thickness of the display panel is greatly increased, and the flexible OLED display panel is influenced greatly;
the flexible OLED display panel is a deformable and bendable panel made of a soft material. The flexible display panel in the prior art generally adopts an OLED (Organic Light-Emitting Diode) technology, which has the advantages of low power consumption, small volume, portability, various display modes, and the like, and thus is widely applied to various electronic products; however, when the thickness of the display panel is large, the bending performance of the whole display panel is undoubtedly greatly affected;
(2) the display panel has more structural components and higher cost; meanwhile, in the preparation process of the display panel, the circular polarizer 5 'needs to be prepared on one substrate film layer, the touch layer 6' needs to be prepared on the other substrate film layer, and then the two layers are combined together, so that the process is complex and the production efficiency is not high.
Meanwhile, the inventors have also tested a structure of a display panel in which a touch layer is located between a circular polarizer and an encapsulation layer, and the touch layer has a separate touch substrate film layer. By adopting the structure, the process difficulty of the display panel with the touch layer is further increased, and the two technical problems that the display panel still has larger thickness, is not easy to bend and has higher production cost are not solved.
In addition, in order to reduce the thickness of the display panel, a technical scheme of integrating the touch layer in the display layer may be adopted, for example, the touch electrode layer and the gate line and/or the display electrode may be disposed on the same metal layer. By adopting the technical scheme, the thickness of the display panel is reduced to a certain extent, and the bending performance of the display panel is enhanced, however, the touch layer is integrated in the display layer, so that higher process requirements are provided for the touch layer and the display layer, that is, the process difficulty in the manufacturing process of the display panel is greatly increased, and the production cost is correspondingly increased; meanwhile, the touch layer and the display layer are integrated together, and the touch layer is easy to have adverse effects on the display effect of the display layer; in the later maintenance process, if the touch layer breaks down, the display layer needs to be repaired and replaced together, so that the maintenance cost is greatly increased.
Fig. 4 is a schematic view of a display panel according to an embodiment of the invention.
The display panel in this embodiment includes, from bottom to top in the z direction in the figure: the touch display panel comprises a substrate 1, a display layer 2, a packaging layer 3, an adhesive layer 4, a first touch electrode layer 61, an insulating layer 62, a second touch electrode layer 63, a lambda/4 wave plate 51, a linear polarizer 52 and a protective film 7. The first touch electrode layer 61, the insulating layer 62 and the second touch electrode layer 63 form a touch layer 6, which can realize a mutual capacitance touch function, the lambda/4 wave plate 51 and the linear polarizer 52 form a circular polarizer 5, wherein the upper surface of the second touch electrode layer 63 is directly contacted with the lower surface of the lambda/4 wave plate 51, i.e., the touch layer is directly formed on the lambda/4 wave plate 51, and no additional touch layer substrate is arranged, so that a hierarchical structure is reduced, the thickness of the display panel is also reduced, and the bending of the display panel is facilitated.
The lambda/4 wave plate 51 is used as a substrate of the touch layer, so that a liquid crystal coating wave plate cannot be selected, the material of the wave plate can be COP (cyclic olefin polymer) or PC (polycarbonate), and the thickness of the lambda/4 wave plate can be selected to be 30um to 50 um. The embodiments listed here are only optional embodiments, and good technical effects can be obtained, however, in practical applications, the material and thickness of the λ/4 wave plate can be adjusted according to practical needs, and are not limited to the optional embodiments listed here.
The material of the first touch electrode layer 61 and the second touch electrode layer 63 can be selected from metal or ITO (indium tin oxide), wherein the metal material can be selected from molybdenum, copper, nano silver, or the like. The insulating layer 62 may include at least one organic insulating layer, which may include a PET (polyethylene terephthalate) insulating layer, or at least one inorganic insulating layer, which may include a silicon nitride insulating layer, a silicon oxide insulating layer, or a zirconium oxide insulating layer, or a combination structure of at least one organic insulating layer and at least one inorganic insulating layer.
The material selection of the touch electrode and the insulating layer listed here is only an optional embodiment, and in practical applications, the material selection of the touch electrode and the insulating layer is not limited to the above-listed cases.
The thickness of the insulating layer 62 is preferably 10nm to 10um, wherein the thickness of the inorganic insulating layer is preferably 200nm to 400nm, more preferably 300nm, and the thickness of the organic insulating layer is preferably 800nm to 2um, more preferably 1 um. The thickness of the insulating layer 62 is only an optional embodiment, and a thinner touch layer can be obtained on the basis of realizing the insulating and isolating function. In practical applications, the thickness of the insulating layer 62 can be selected to have other values, which are not limited to those listed here.
The mutual capacitance touch layer can be provided with electrodes in different directions on the two touch electrode layers respectively, the electrodes on the two touch electrode layers are perpendicular to each other, because the electrodes on the two touch electrode layers are constructed on different surfaces, a capacitance node is formed at the intersection of the electrodes, one touch electrode layer can be used as a driving layer, and the other touch electrode layer can be used as a sensing layer. When current flows through one wire in the driving layer, if a capacitance change signal exists outside, the change of a capacitance node on the other wire layer can be caused, the change of the detected capacitance value can be measured through the sensing layer and an electronic loop connected with the sensing layer, and touch positioning is carried out according to the measured sensing signal.
Optionally, the first touch electrodes in the first touch electrode layer 61 are arranged in a first direction, the first touch electrodes in the second touch electrode layer 63 are arranged in a second direction, the first direction and the second direction are staggered, the first touch electrode layer 61 is a touch driving electrode layer, and the second touch electrode layer 63 is a touch sensing electrode layer. In addition, it is also possible that the first touch electrode layer 61 is configured as a touch sensing electrode layer, and the second touch electrode layer 63 is configured as a touch driving electrode layer, and both of them are within the protection scope of the present invention.
In addition, the encapsulation layer 3 and the first touch electrode layer 61 of the present invention may be combined together in other manners, which is not limited to bonding, and other functional film layers, such as a barrier layer, may also be disposed between the encapsulation layer 3 and the first touch electrode layer 61, and all of them are within the protection scope of the present invention.
Fig. 5 is a schematic structural diagram of a display panel according to another embodiment of the invention. This embodiment differs from the previous embodiment in that: a lambda/2 wave plate 53 is also provided between the lambda/4 wave plate 51 and the linear polarizer 52. While the touch layer is not changed, the second touch electrode layer 63, the insulating layer 62 and the first touch electrode layer 61 are sequentially formed by using the λ/4 wave plate 51 as a substrate, that is, structurally, the second touch electrode layer 63 is in direct contact with the λ/4 wave plate 51.
The lambda/4 wave plate 51 and the lambda/2 wave plate 53 together constitute a phase difference film. In the invention, the touch layer 6 is directly contacted with the lambda/4 wave plate, and the function realization of the phase difference film is not influenced no matter whether the phase difference film contains the lambda/2 wave plate or not.
The embodiment of the invention also provides a display device which comprises the display panel. The display device can be widely applied display devices such as a computer display, a mobile phone, a tablet personal computer, an electronic photo album and the like. The display panel of the display device can be bent in different degrees and different directions according to design requirements, the size can be smaller, and the cost can be greatly reduced. Since the touch function is integrated in the display panel, a user can operate the display apparatus more conveniently without relying on a keyboard, a mouse, or the like entirely and having an input device. The display panel is light and thin, so that the display device is also light and thin, and a user can conveniently carry the display device with him or her without causing burden on traveling.
Since the flexible display device in the prior art mostly adopts the OLED technology, a smaller thickness, portability and flexibility of the display panel can be achieved. Therefore, the display device in the display layer of the present invention may be selected as an organic light emitting diode, which is disposed above the substrate. However, the present invention is not limited thereto.
In addition, the structure of the invention can be applied to a non-flexible display panel, and the technical effects of reducing the whole thickness of the display panel, reducing the cost and improving the production efficiency are achieved, and the invention belongs to the protection scope of the invention.
In the prior art, the display panel is prepared above the packaging layer by the lambda/4 wave plate, and the technical scheme of the invention can be widely applied to various display panels due to the wide application of the lambda/4 wave plate.
An embodiment of the present invention further provides a method for manufacturing a display panel, and fig. 6 is a schematic diagram illustrating a touch layer formed on a λ/4 wave plate according to an embodiment of the present invention. The preparation method of the display panel comprises the following steps:
providing a substrate 1;
forming a display layer 2 on one side of the substrate 1;
forming an encapsulation layer 3 on one side of the display layer 2, which is far away from the substrate;
providing a linear polarizer 52;
forming a lambda/4 wave plate 51 at one side of the linear polarizer;
forming a second touch electrode layer 63 on one side of the lambda/4 wave plate 51, which is far away from the linear polarizer 52;
forming an insulating layer 62 on the side of the second touch electrode layer 63 departing from the λ/4 wave plate 51;
forming a first touch electrode layer 61 on one side of the insulating layer 62, which is far away from the second touch electrode layer 63;
and attaching one side of the first touch electrode layer 61 departing from the insulating layer 62 to one side of the packaging layer 3 departing from the display layer 2.
In the preparation process, the second touch electrode layer 63 may be formed by a roll-to-roll process. With the method of the present invention, the touch layer 6 can be conveniently formed on the λ/4 wave plate 51 by a roll-to-roll process.
In addition, the bonding method between the first touch electrode layer 61 and the package layer 3 is not limited to the above bonding, and other methods may also be adopted, and other functional film layers, such as a barrier layer, may also be added between the first touch electrode layer 61 and the package layer 3 according to actual needs, and all of them fall within the protection scope of the present invention.
In addition, the preparation method of the display panel can also comprise a step of forming a lambda/2 wave plate on one side of the linear polarizer, the lambda/2 material is not limited, and can be selected from materials such as COP (cyclic olefin polymer) or PC (polycarbonate), and can also be manufactured by a liquid crystal coating mode.
In the preparation process of the display panel, the materials and thicknesses of the touch electrode, the insulating layer, and the λ/4 wave plate may be set according to the above-listed contents, but are not limited thereto.
The following is further described by comparison of several comparative examples and the present invention:
comparative example 1: referring to fig. 1 to 3 in the prior art, the display panel includes a substrate 1 ', a display layer 2' disposed on the substrate 1 ', an encapsulation layer 3' disposed on a side of the display layer 2 'away from the substrate 1', and a circular polarizer 5 'disposed on a side of the encapsulation layer 3' away from the display layer 2 ', the touch layer 6' is disposed on a side of the circular polarizer 5 'away from the encapsulation layer 3', and the touch layer 6 'has an independent touch substrate film layer 64';
comparative example 2: the display panel comprises a substrate, a display layer arranged on the substrate, a packaging layer arranged on one side of the display layer, which is far away from the substrate, and a circular polarizer arranged on one side of the packaging layer, which is far away from the display layer, wherein the touch layer is positioned between the circular polarizer and the packaging layer, and is provided with an independent touch substrate film layer;
comparative example 3: the display panel comprises a substrate, a display layer arranged on the substrate, a packaging layer arranged on one side of the display layer, which is far away from the substrate, and a circular polarizer arranged on one side of the packaging layer, which is far away from the display layer, wherein the touch layer is integrated in the display layer.
The following table 1 shows the comparison between the display panel of the present invention and comparative examples 1 to 3 in terms of bending performance, portability, process difficulty, production cost, and maintenance cost in actual manufacturing process and use:
table 1 comparative table of panel effect
| Bending property | Portability feature | Difficulty of the process | Production cost | Cost of maintenance | |
| The invention | Is very good | Is preferably used | Is preferably used | Is preferably used | Is preferably used |
| Comparative example 1 | Difference (D) | Difference (D) | In general | Is poor | Is poor |
| Comparative example 2 | Difference (D) | Difference (D) | In general | Is poor | Is poor |
| Comparative example 3 | Is preferably used | Is preferably used | Difference (D) | Difference (D) | Difference (D) |
Wherein, the technical effect is decreased from very good, better, common, worse and poor in sequence.
The display panel, the display device and the manufacturing method of the display panel provided by the invention have the following advantages:
in the display panel, the touch layer is manufactured on one side of the lambda/4 wave plate of the circular polarizer, the touch layer adopts double-layer touch electrodes, the middle part of the touch layer is separated by the insulating layer to form embedded touch, the touch electrode layer is directly contacted with the lambda/4 wave plate, the lambda/4 wave plate is used as a substrate of the touch layer, and no additional touch substrate is needed to be arranged, so that the overall thickness of the display panel is reduced, and the bending property of the display panel is enhanced; the display panel has fewer structural components, and a touch layer is directly formed on the lambda/4 wave plate, so that the process is simpler, the production efficiency is improved, and the cost is reduced; the lambda/4 wave plate is used as the substrate to form the touch layer, so that the function realization of the lambda/4 wave plate is not influenced, the arrangement of functional devices in the packaging layer is not influenced, and meanwhile, the technical scheme also has wide application range correspondingly as the lambda/4 wave plate is widely applied to various display panels.
The foregoing is a more detailed description of the invention in connection with specific alternative embodiments, and the practice of the invention should not be construed as limited to those descriptions. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (9)
1. A display panel, wherein the display panel is an OLED display panel, comprising:
a substrate;
a display layer on one side of the substrate;
the packaging layer is positioned on one side of the display layer, which is far away from the substrate;
the touch control layer comprises a first touch control electrode layer, an insulating layer and a second touch control electrode layer, wherein the first touch control electrode layer is a touch control driving electrode layer, the second touch control electrode layer is a touch control induction electrode layer, first touch control electrodes in the first touch control electrode layer are arranged in a first direction, first touch control electrodes in the second touch control electrode layer are arranged in a second direction, the first direction and the second direction are staggered, the first touch control electrode layer is positioned on one side, away from the display layer, of the packaging layer, the first touch control electrode layer is directly attached to the packaging layer, the insulating layer is positioned on one side, away from the packaging layer, of the first touch control electrode layer, and the second touch control electrode layer is positioned on one side, away from the first touch control electrode layer, of the insulating layer;
the lambda/4 wave plate is positioned on one side, away from the insulating layer, of the second touch electrode layer, the second touch electrode layer is formed by using the lambda/4 wave plate as a substrate through a roll-to-roll process, and the second touch electrode layer is in direct contact with the lambda/4 wave plate;
the linear polarizer is positioned on one side, away from the second touch electrode layer, of the lambda/4 wave plate;
the thickness of insulating layer is 10nm ~ 10um, the insulating layer includes organic insulating layer and/or inorganic insulating layer, organic insulating layer includes the polyethylene glycol terephthalate insulating layer, inorganic insulating layer includes silicon nitride insulating layer, silicon oxide insulating layer or zirconia insulating layer, the thickness of inorganic insulating layer is 200nm ~ 400nm, the thickness of organic insulating layer is 800nm ~ 2 um.
2. The display panel according to claim 1, wherein the material of the λ/4 plate comprises cyclic olefin polymer or polycarbonate.
3. The display panel according to claim 1, wherein the thickness of the λ/4 plate is 30um to 50 um.
4. The display panel according to claim 1, wherein the first and second touch electrode layers comprise a metal electrode layer or an indium tin oxide transparent conductive film layer, and the metal electrode layer comprises a molybdenum electrode layer, a copper electrode layer or a nano silver electrode layer.
5. The display panel of claim 1, further comprising a λ/2 wave plate between the λ/4 wave plate and the linear polarizer.
6. A display device characterized by comprising the display panel according to any one of claims 1 to 5.
7. A preparation method of a display panel is characterized in that the display panel is an OLED display panel, and the method comprises the following steps:
providing a substrate;
forming a display layer on one side of the substrate;
forming an encapsulation layer on one side of the display layer, which is far away from the substrate;
providing a linear polarizer;
forming a lambda/4 wave plate on one side of the linear polarizer;
forming a second touch electrode layer on one side of the lambda/4 wave plate, which is far away from the linear polarizer, by adopting a roll-to-roll process, wherein the second touch electrode layer is a touch induction electrode layer, the second touch electrode layer is formed by taking the lambda/4 wave plate as a substrate, and the second touch electrode layer is in direct contact with the lambda/4 wave plate;
forming an insulating layer on one side, away from the lambda/4 wave plate, of the second touch electrode layer;
forming a first touch electrode layer on one side of the insulating layer, which is far away from the second touch electrode layer;
combining one side of the first touch electrode layer, which is far away from the insulating layer, with one side of the packaging layer, which is far away from the display layer, wherein the first touch electrode layer is a touch driving electrode layer and is directly attached to the packaging layer;
the first touch electrodes in the first touch electrode layer are arranged in a first direction, the first touch electrodes in the second touch electrode layer are arranged in a second direction, and the first direction and the second direction are staggered;
the thickness of insulating layer is 10nm ~ 10um, the insulating layer includes organic insulating layer and/or inorganic insulating layer, organic insulating layer includes the polyethylene glycol terephthalate insulating layer, inorganic insulating layer includes silicon nitride insulating layer, silicon oxide insulating layer or zirconia insulating layer, the thickness of inorganic insulating layer is 200nm ~ 400nm, the thickness of organic insulating layer is 800nm ~ 2 um.
8. The method of claim 7, wherein the material of the λ/4 plate comprises cyclic olefin polymer or polycarbonate.
9. The method of claim 7, wherein the thickness of the λ/4 plate is 30um to 50 um.
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| CN201610930083.3A CN106527790B (en) | 2016-10-31 | 2016-10-31 | Display panel, display device and manufacturing method of display panel |
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| CN201610930083.3A CN106527790B (en) | 2016-10-31 | 2016-10-31 | Display panel, display device and manufacturing method of display panel |
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| CN106527790A CN106527790A (en) | 2017-03-22 |
| CN106527790B true CN106527790B (en) | 2020-06-30 |
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| CN108874244B (en) * | 2017-05-12 | 2023-05-30 | 京东方科技集团股份有限公司 | Touch panel and touch device |
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| WO2019153356A1 (en) * | 2018-02-12 | 2019-08-15 | 深圳市柔宇科技有限公司 | Touch-control display panel and touch-control display device |
| CN108491105B (en) * | 2018-03-14 | 2021-05-04 | 业成科技（成都）有限公司 | Touch control display device |
| CN108334241A (en) * | 2018-03-21 | 2018-07-27 | 武汉华星光电半导体显示技术有限公司 | Touch-control structure of polarized light and flexible display apparatus |
| CN108807474A (en) * | 2018-06-04 | 2018-11-13 | 云谷（固安）科技有限公司 | Display module and preparation method thereof, display device |
| CN108873447B (en) * | 2018-06-14 | 2021-08-03 | 业成科技（成都）有限公司 | Touch control display device |
| CN108666357B (en) * | 2018-07-06 | 2021-01-22 | 京东方科技集团股份有限公司 | Display panel, manufacturing method thereof and display device |
| CN110021645B (en) * | 2019-03-27 | 2021-03-16 | 武汉华星光电半导体显示技术有限公司 | Display panel, manufacturing method thereof and display device |
| CN111625122B (en) * | 2020-05-08 | 2024-01-12 | 武汉华星光电半导体显示技术有限公司 | Touch display device |
| CN113066393B (en) * | 2021-03-03 | 2022-07-29 | 武汉华星光电半导体显示技术有限公司 | Display device |
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