WO2019114115A1

WO2019114115A1 - Integrated flexible touch screen and manufacturing method thereof, and oled display device

Info

Publication number: WO2019114115A1
Application number: PCT/CN2018/074631
Authority: WO
Inventors: 赵宸
Original assignee: 武汉华星光电半导体显示技术有限公司
Priority date: 2017-12-15
Filing date: 2018-01-30
Publication date: 2019-06-20
Also published as: CN108021284A; CN108021284B

Abstract

Provided are an integrated flexible touch screen and a manufacturing method thereof. The integrated flexible touch screen comprises a flexible cover plate, a polarization layer and a touch layer which are sequentially stacked. The polarization layer or the touch layer is directly formed at the flexible cover plate, such that no base needs to be provided for the polarization layer or the touch layer, thereby reducing a thickness of the flexible touch screen. Moreover, the touch layer and the polarization layer are bonded together, such that the flexible cover plate, the polarization layer and the touch layer of the integrated flexible touch screen form an integral structure. In a process of manufacturing the OLED display device, the integrated flexible touch screen and an OLED display panel can be bonded in one bonding process, thereby simplifying a manufacturing process of the OLED display device, and increasing the yield of the OLED display device.

Description

Integrated flexible touch screen and manufacturing method thereof, OLED display

Technical field

The present invention relates to the field of flexible panel technologies, and in particular, to an integrated flexible touch screen, a manufacturing method thereof, and an OLED display.

Background technique

The OLED (organic light-emitting diode) display has the characteristics of high luminance, wide viewing angle, fast response, ultra-thin, light weight, and can be fabricated on a flexible substrate, and has been widely concerned. Moreover, compared with the traditional TFT-LCD technology, the biggest advantage of OLED is that it can be made into a flexible product. An OLED display generally includes an OLED display panel and a flexible touch screen disposed on the OLED display panel. In order to make the OLED display have a high bending characteristic, it is required to reduce the thickness of the flexible touch screen as much as possible so that the flexible touch screen has better bending performance, thereby improving the OLED display. Bending characteristics.

Summary of the invention

The invention provides an integrated flexible touch screen, a manufacturing method thereof and an OLED display, so as to minimize the thickness of the flexible touch screen, so that the flexible touch screen has better bending performance to improve the Bending performance of OLED displays.

The integrated flexible touch screen includes a flexible cover plate, a polarizing layer and a touch layer. The polarizing layer or the touch layer is formed on the flexible cover, and the touch layer is laminated with the polarizing layer. And bonded as one.

In an embodiment of the invention, the flexible cover comprises a flexible substrate and a hardened film layer laminated on one side of the flexible substrate; the polarizing layer comprises a polarizing film layer and a phase delay laminated on one side of the polarizing film layer a layer of the polarizing film formed on a side of the flexible substrate facing away from the hardened film layer; the touch layer includes a flexible touch substrate and a touch line laminated on the flexible touch substrate Floor.

In another embodiment of the present invention, the flexible cover plate includes a flexible substrate and a hardened film layer laminated on one side of the flexible substrate, the polarizing layer includes a polarizing film layer, and the polarizing film layer is formed on the flexible layer a side of the substrate facing away from the hardened film layer; the touch layer comprising a phase retardation layer and a touch line layer laminated on the phase retardation layer.

In another embodiment of the present invention, the flexible cover includes a flexible substrate and a hardened film layer laminated on one side of the flexible substrate; the touch layer includes a touch circuit layer, and the touch circuit layer is formed on a side of the flexible substrate facing away from the hardened film layer; the polarizing layer comprising a polarizing film layer and a phase retarding layer laminated on one side of the polarizing film layer, the polarizing film layer being adhered to the touch circuit layer Hehe.

The OLED display includes an OLED display panel and the above-described integrated flexible touch screen, and the integrated flexible touch screen is laminated on the OLED display panel.

The method for manufacturing the integrated flexible touch screen comprises the steps of:

Preparing a flexible cover sheet;

Forming a polarizing layer on the flexible cover;

Preparing a touch layer;

Bonding the touch layer to a side of the polarizing layer facing away from the flexible cover.

In an embodiment of the invention, the step of “forming a polarizing layer on the flexible cover” includes:

Forming a polarizing film layer on one surface of the flexible cover; forming a phase retardation layer on a side of the polarizing film layer facing away from the flexible cover plate, the polarizing layer comprising the polarizing film layer and the phase retardation layer.

Wherein, the step “preparing the touch layer” includes:

Providing a flexible touch substrate;

Depositing a layer of a touch material on one side of the flexible touch substrate;

The touch layer is patterned to form a touch trace layer, and the touch layer includes the flexible touch substrate and the touch trace layer.

In another embodiment of the present invention, the step of “forming a polarizing layer on the flexible cover” includes:

A polarizing film layer is formed on one surface of the flexible cover sheet by coating, transfer or bonding, and the polarizing layer includes the polarizing film layer.

Wherein, the step “preparing the touch layer” includes:

Providing a substrate on which a phase retardation layer is formed;

Depositing a layer of a touch material on a side of the phase retardation layer facing away from the substrate;

Patterning the touch material layer to form a touch trace layer;

The substrate is peeled off, and the touch layer includes the phase retardation layer and the touch trace layer. The integrated flexible touch screen and the manufacturing method thereof are provided by sequentially laminating the flexible cover, the polarizing layer and the touch layer of the flexible touch screen, and forming the polarizing layer or the touch layer directly on the The flexible cover plate does not need to provide a substrate for forming the polarizing layer or the touch layer, thereby achieving thinning of the flexible touch screen. Moreover, the touch layer and the polarizing layer are integrally bonded, so that the flexible cover, the polarizing layer and the touch layer of the integrated flexible touch screen form an integrated structure. Therefore, when the OLED display is fabricated, the integrated flexible touch screen and the OLED display panel can be directly subjected to a bonding process, thereby simplifying the process of the OLED display and improving the product of the OLED display. Yield.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any creative work.

1 is a schematic structural view of an integrated flexible touch screen according to an embodiment of the present invention;

2 is a schematic structural view of an integrated flexible touch screen according to another embodiment of the present invention;

3 is a schematic structural view of an integrated flexible touch screen according to another embodiment of the present invention;

4 is a schematic structural view of an integrated flexible touch screen according to another embodiment of the present invention;

FIG. 5 is a flow chart of a method for manufacturing an integrated flexible touch screen according to an embodiment of the invention.

Detailed ways

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

Referring to FIG. 1, the present invention provides an integrated flexible touch screen 100. The touch screen 100 includes a flexible cover 10 , a polarizing layer 20 , and a touch layer 30 that are sequentially stacked. The polarizing layer 20 is formed on the flexible cover 10 and integrated with the flexible cover 10. The touch layer 10 and the polarizing layer 20 are integrally bonded by a glue layer 40. By forming the polarizing layer 20 on the flexible cover 10, a substrate required for forming the polarizing layer 20 can be reduced, thereby thinning the integrated flexible touch screen 100. Moreover, by providing the glue layer 40 between the touch layer 10 and the polarizing layer 20, the two functional layers of the touch layer 10 and the polarizing layer 20 can be separated to avoid formation. When the two functional layers are formed, an influence is exerted on each other, thereby ensuring the quality of the touch layer 10 and the polarizing layer 20, so that the two functional layers can work normally.

The flexible cover 10 includes a flexible substrate 11 and a hardened film layer 12 laminated on one side of the flexible substrate 11. The flexible substrate 11 may be a polymer material such as PI, COP, or PET, and the thickness thereof generally does not exceed 50 μm to ensure that the flexible cover 10 has good bending characteristics. In this embodiment, the flexible substrate 11 is made of a PI material. The hardened film layer 12 is a thin film structure deposited on one side of the flexible substrate 11, and its thickness generally does not exceed 10 μm. The strength of one side of the flexible cover 10 can be enhanced by the hardened film layer 12, and the characteristics of the flexible cover 10 such as drop resistance, wear resistance, waterproofness and the like can be achieved.

In the present invention, the polarizing layer 20 includes a polarizing film layer 21 and a phase retardation layer 22 laminated on the polarizing film layer 21. Wherein, the polarizing film layer 21 is a linear polarizing film, and the layer is prepared by a liquid crystal material coating method, and the thickness is obviously reduced compared with the film layer formed by stretching of the existing polyvinyl alcohol (PVA), and the thickness thereof is generally Less than 2 μm. By adding a phase retardation layer 22 to the side of the linear polarizing film layer 21 facing away from the flexible cover 10, the linear polarizing film layer 21 and the phase retardation layer 22 constitute a circularly polarizing plate. The reflection of the external light entering the integrated flexible touch screen 100 can be reduced by the circular polarizing plate, thereby enhancing the display effect of the display provided with the integrated flexible touch screen 100. The phase retardation layer 22 is also a coating retarder made of a liquid crystal material and has a thickness of less than 2 um. Thus, the overall thickness of the polarizing layer 20 is guaranteed to be within 5 um, thereby further reducing the thickness of the integrated flexible touch screen 100. In the present invention, the polarizing film layer 21 is directly formed on one side of the flexible substrate 11 facing away from the hardened film layer 12, and the phase retardation layer 22 is directly formed on one surface of the polarizing film layer 21. By forming the polarizing film layer 21 directly on the flexible substrate 11, and forming the phase retardation layer 22 directly on one side of the polarizing film layer 21, it is reduced compared to the prior art. The substrate of the polarizing film layer 21 and the phase retardation layer 22 is formed, thereby achieving thinning of the integrated flexible touch screen 100.

The touch layer 30 includes a flexible touch substrate 31 and a touch line layer 32 stacked on the flexible touch substrate 31 . The flexible touch substrate 31 can be a polymer material such as PI, COP, or PET to ensure that the touch layer 30 has good bending characteristics. In this embodiment, the flexible touch substrate 31 is made of PET material.

A glue layer 40 is disposed between the touch layer 30 and the polarizing layer 20, and the touch layer 30 and the polarizing layer 20 are bonded together by the glue layer 40. In this embodiment, the touch-control circuit layer 32 is adhered to the phase retardation layer 22 of the polarizing layer 20 through the adhesive layer 40, so that the touch-control circuit layer 32 is closer to the flexible cover 10, When the touch operation is performed on the flexible cover 10, the touch function of the touch line layer 32 can be better realized. It can be understood that in other embodiments, the phase retardation layer 22 can also be bonded to the flexible touch substrate 31 through the adhesive layer 40. In the present invention, the adhesive layer 40 is a pressure sensitive adhesive such as PSA or OCA, which ensures that the touch layer 30 and the polarizing layer 20 are bonded together, and the touch function of the touch layer 30 is normally used.

In this embodiment, the flexible cover 10, the polarizing layer 20, and the touch layer 30 of the flexible touch screen 100 are sequentially stacked, and the polarizing layer 20 or the touch layer 30 is directly formed on the On the flexible cover 10, it is not necessary to provide a substrate for forming the polarizing layer 20 or the touch layer 30, thereby achieving thinning of the flexible touch screen 100.

Referring to FIG. 2, in another embodiment of the present invention, an integrated flexible touch screen 200 is provided. The integrated flexible touch screen 200 differs from the integrated flexible touch screen 100 of FIG. 1 in the present invention in that the polarizing layer 20 is The phase retardation layer 22 is not included. The touch layer 30 includes the touch line layer 32 and the phase retardation layer 22, and does not include the flexible touch substrate 31. The touch line layer 32 is stacked on the phase retardation layer. 22 on. In this embodiment, the adhesive layer 40 is located between the polarizing film layer 21 and the touch control layer 32 and bonds the polarizing film layer 21 and the touch wiring layer 32. It is to be understood that, in other embodiments of the present invention, the phase retardation layer 22 may be adhered to the polarizing film layer 21 through the adhesive layer 40 to implement the touch layer 30 and the polarized light. Bonding of layer 20. In this embodiment, the touch layer 30 does not include the flexible touch substrate 31 with respect to the touch layer 30 in the integrated flexible touch screen 100, so that the integration can be further reduced. The thickness of the flexible touch screen 200 is such that better bending characteristics are achieved.

Referring to FIG. 3, in another embodiment of the present invention, an integrated flexible touch screen 300 is provided. The integrated flexible touch screen 300 differs from the integrated flexible touch screen 100 of FIG. 1 in the present invention in that: the touch layer The touch-control circuit layer 31 is formed on the flexible substrate 11 opposite to the hardened film layer 12, that is, the touch layer 30 is formed on the flexible cover 10 on. The polarizing film layer 21 of the polarizing layer 20 is bonded to the touch wiring layer 31 through the adhesive layer 40.

Referring to FIG. 4, in another embodiment of the present invention, an integrated flexible touch screen 400 is provided. The integrated flexible touch screen 400 differs from the integrated flexible touch screen 100 of FIG. 1 in the present invention in that the touch layer is The flexible cover 10 is also bonded to the flexible cover 10 by the glue layer 40.

The present invention also provides an OLED display, comprising an OLED display panel and any one of the above-mentioned integrated flexible touch screens, wherein the integrated flexible touch screen is laminated on the OLED display panel, the integrated flexible The touch screen is also bonded to the OLED display panel through the adhesive layer 40. In the present invention, by forming the flexible cover 10, the polarizing layer 20 and the touch layer 30 of the integrated flexible touch screen into an integrated structure, when the OLED display is fabricated, the integrated flexible touch screen can be directly The OLED display panel can be obtained by performing a bonding process, thereby simplifying the process of the OLED display and improving the product yield of the OLED display.

Referring to FIG. 5, the present invention further provides a method for fabricating the integrated flexible touch screen 100, including:

Step 110, preparing the flexible cover 10 . Providing the flexible substrate 11 on the one side of the flexible substrate 11 by forming a hardened film layer 12 by a process such as coating, transfer or vapor deposition, that is, obtaining the flexible substrate 11 and the hardening The flexible cover 10 of the film layer 12.

Step 120, forming a polarizing layer 20 on the flexible cover 10. The polarizing film layer 21 is formed by coating, transfer or vapor deposition on the side of the flexible substrate 11 facing away from the cured film layer 12. Forming the phase retardation layer 22 by a process such as coating, transfer or vapor deposition on the side of the polarizing film layer 21 facing away from the flexible cover sheet 10, that is, obtaining the polarizing film layer 21 and the phase retardation layer 22 The polarizing layer 20 is. Wherein, the polarizing film layer 21 is closer to the flexible cover 10 relative to the phase retardation layer 22, so that light entering from the flexible cover 10 can be absorbed by the polarizing layer 20. , thereby reducing reflections. In the present embodiment, the polarizing film layer 21 is obtained by coating a liquid crystal material, and the thickness thereof is generally less than 2 μm, which is significantly lower than that of the conventional polyvinyl alcohol (PVA) stretched film layer. The phase retardation layer 22 is also obtained by coating a liquid crystal material with a thickness of less than 2 um. Thus, the overall thickness of the polarizing layer 20 is guaranteed to be within 5 um, which greatly reduces the overall thickness of the polarizing layer 20, thereby further reducing the thickness of the integrated flexible touch screen 100.

Step 130: Prepare the touch layer 30. The flexible touch substrate 31 is provided. Depositing a touch material layer on one surface of the flexible touch substrate 31 by vapor deposition or sputtering, and patterning the touch material layer to form the touch trace layer 32, thereby obtaining the flexible touch The substrate 31 and the touch layer 30 of the touch trace layer 32.

Step 140, bonding the touch layer 30 and the polarizing layer 20 through the adhesive layer 40. The prepared touch layer 30 and the polarizing layer 20 are integrally bonded through the adhesive layer 40 so as to include the integrated touch layer 30, the polarizing layer 20 and the flexible cover. The integrated flexible touch screen 100 of the board 10.

In the method for fabricating the integrated flexible touch screen 200 in other embodiments of the present invention, the difference from the method of forming the integrated flexible touch screen 100 is as follows:

The step 120 includes forming the polarizing film layer 21 by coating, transfer or vapor deposition on the side of the flexible substrate 11 facing away from the cured film layer 12.

Step 130 includes providing a substrate on which the phase retardation layer 22 is formed by coating, transfer or vapor deposition. The touch material layer is deposited by a process such as vapor deposition or sputtering on the side of the phase retardation layer 22 facing away from the substrate, and the touch material layer is patterned to form the touch trace layer 32. Finally, the substrate is peeled off to obtain the touch layer 30 including the phase retardation layer 22 and the touch trace layer 32. After the phase retardation layer 22 and the touch trace layer 32 are formed on the substrate, the substrate is peeled off, and the phase retardation layer 22 and the touch trace layer 32 are formed simultaneously. The thickness of the integrated flexible touch screen 200 is reduced as much as possible.

In the method for fabricating the integrated flexible touch screen 300 in other embodiments of the present invention, the difference from the method of forming the integrated flexible touch screen 100 is as follows:

Step 120 is to form the touch layer 30 on the flexible cover 10. Specifically, the touch layer 30 includes the touch trace layer 32. Depositing the touch material layer on the side of the flexible substrate 11 facing away from the hardened film layer 12 by vapor deposition or sputtering, and then patterning the touch material layer to form the touch trace layer 32. The touch layer 30 including the touch trace layer 32 is formed.

Step 130 is to prepare the polarizing layer 20. Specifically, the polarizing layer 30 includes the polarizing film layer 21 and the phase retardation layer 22 . Providing a substrate, forming the phase retardation layer 22 on one side of the substrate by coating, transfer or vapor deposition, and then coating, transferring or vaporizing the side of the phase retardation layer 22 away from the substrate The polarizing film layer 21 is formed by deposition or the like, and the polarizing film layer 21 and the phase retardation layer 22 are formed, and then the substrate is peeled off.

Step 140 is to bond the touch layer 30 and the polarizing layer 20 through the adhesive layer 40. Specifically, the polarizing film layer 21 of the polarizing layer 20 and the touch circuit layer 32 are bonded by the adhesive layer 40. It can be understood that the peeling of the substrate in the step 130 can also be performed after the step of “bonding the touch layer 30 and the polarizing layer 20 through the adhesive layer 40” is completed.

In the method for fabricating the integrated flexible touch screen 400 in other embodiments of the present invention, the difference from the method of forming the integrated flexible touch screen 100 is as follows:

Step 120 is to prepare the polarizing layer 20. Specifically, the polarizing layer 30 includes the polarizing film layer 21 and the phase retardation layer 22 . Providing a substrate, forming the phase retardation layer 22 on one side of the substrate by coating, transfer or vapor deposition, and then coating, transferring or vaporizing the side of the phase retardation layer 22 away from the substrate The polarizing film layer 21 is formed by deposition or the like, and the polarizing film layer 21 and the phase retardation layer 22 are formed, and then the substrate is peeled off.

Step 140 is to bond the polarizing layer 20 and the flexible cover 10 through the adhesive layer 40, and bond the touch layer 30 and the polarizing layer 20 through the adhesive layer 40. It will be appreciated that the two bonding processes can be reversed. Specifically, the polarizing film layer 21 of the polarizing layer 20 is bonded to the flexible substrate 11 of the flexible cover 10, and the phase retardation layer 22 of the polarizing layer 20 and the touch layer 30 are touched. The control circuit layer 32 is bonded.

The integrated flexible touch screen and the manufacturing method thereof are provided by sequentially laminating the flexible cover 10, the polarizing layer 20 and the touch layer 30 of the flexible touch screen, and the polarizing layer 20 or the touch The layer 30 is directly formed on the flexible cover 10, so that it is not necessary to provide a substrate for forming the polarizing layer 20 or the touch layer 30, thereby achieving thinning of the flexible touch screen. Moreover, the touch layer 20 and the polarizing layer 30 are integrally bonded, so that the flexible cover 10, the polarizing layer 20 and the touch layer 30 of the integrated flexible touch screen form an integrated structure. Therefore, when the OLED display is fabricated, the integrated flexible touch screen and the OLED display panel can be directly subjected to a bonding process, thereby simplifying the process of the OLED display and improving the product of the OLED display. Yield.

The above disclosure is only a preferred embodiment of the present invention, and of course, the scope of the present invention is not limited thereto, and those skilled in the art can understand all or part of the process of implementing the above embodiments, and according to the present invention. The equivalent changes required are still within the scope of the invention.

Claims

An integrated flexible touch screen, comprising a laminated flexible cover, a polarizing layer and a touch layer, wherein the polarizing layer or the touch layer is formed on the flexible cover, the touch layer and the polarized light The layers are layered and bonded together.
The integrated flexible touch screen of claim 1 , wherein the flexible cover comprises a flexible substrate and a hardened film layer laminated on one side of the flexible substrate; the polarizing layer comprises a polarizing film layer and is laminated on the a phase retardation layer on one side of the polarizing film layer, the polarizing film layer being formed on a side of the flexible substrate facing away from the hardened film layer; the touch layer comprising a flexible touch substrate and being laminated on the flexible touch The touch line layer on the substrate.
The integrated flexible touch screen of claim 1, wherein the flexible cover comprises a flexible substrate and a hardened film layer laminated on one side of the flexible substrate, the polarizing layer comprising a polarizing film layer, the polarizing film a layer is formed on a side of the flexible substrate facing away from the hardened film layer; the touch layer includes a phase retardation layer, and a touch line layer laminated on the phase retardation layer.
The integrated flexible touch screen of claim 1 , wherein the flexible cover comprises a flexible substrate and a hardened film layer laminated on one side of the flexible substrate; the touch layer comprises a touch circuit layer, a touch line layer is formed on a side of the flexible substrate facing away from the hardened film layer; the polarizing layer includes a polarizing film layer and a phase retardation layer laminated on one side of the polarizing film layer, and the polarizing film layer The touch circuit layer is bonded.
An OLED display, wherein the OLED display comprises an OLED display panel and an integrated flexible touch screen, the integrated flexible touch screen is laminated on the OLED display panel; the integrated flexible touch screen comprises a flexible cover plate arranged in a stack, The polarizing layer and the touch layer are formed on the flexible cover plate, and the touch layer is laminated and bonded to the polarizing layer.
The OLED display of claim 5, wherein the flexible cover comprises a flexible substrate and a hardened film layer laminated on one side of the flexible substrate; the polarizing layer comprises a polarizing film layer and is laminated on the polarizing film a phase retardation layer on one side of the layer, the polarizing film layer being formed on a side of the flexible substrate facing away from the hardened film layer; the touch layer comprising a flexible touch substrate and being laminated on the flexible touch substrate The touch circuit layer on the top.
The OLED display of claim 5, wherein the flexible cover comprises a flexible substrate and a hardened film layer laminated on one side of the flexible substrate, the polarizing layer comprising a polarizing film layer, and the polarizing film layer is formed a side of the flexible substrate facing away from the hardened film layer; the touch layer includes a phase retardation layer, and a touch line layer laminated on the phase retardation layer.
The OLED display of claim 5, wherein the flexible cover comprises a flexible substrate and a hardened film layer laminated on one side of the flexible substrate; the touch layer comprises a touch line layer, the touch a circuit layer formed on a side of the flexible substrate facing away from the hardened film layer; the polarizing layer includes a polarizing film layer and a phase retardation layer laminated on one side of the polarizing film layer, the polarizing film layer and the touch Control the wiring layer bonding.
The method for manufacturing an integrated flexible touch screen, comprising the steps of:

Preparing a flexible cover sheet;

Forming a polarizing layer on the flexible cover;

Preparing a touch layer;

Bonding the touch layer to a side of the polarizing layer facing away from the flexible cover.
The method of manufacturing an integrated flexible touch screen according to claim 9, wherein the step of "forming a polarizing layer on the flexible cover" comprises:

Forming a polarizing film layer on one surface of the flexible cover; forming a phase retardation layer on a side of the polarizing film layer facing away from the flexible cover plate, the polarizing layer comprising the polarizing film layer and the phase retardation layer.
The method of manufacturing the integrated flexible touch screen of claim 10, wherein the step of "preparing the touch layer" comprises:

Providing a flexible touch substrate;

Depositing a layer of a touch material on one side of the flexible touch substrate;

The touch layer is patterned to form a touch trace layer, and the touch layer includes the flexible touch substrate and the touch trace layer.
The method of manufacturing an integrated flexible touch screen according to claim 9, wherein the step of "forming a polarizing layer on the flexible cover" comprises:

A polarizing film layer is formed on one surface of the flexible cover sheet by coating, transfer or bonding, and the polarizing layer includes the polarizing film layer.
The method of manufacturing the integrated flexible touch screen of claim 12, wherein the step of "preparing the touch layer" comprises:

Providing a substrate on which a phase retardation layer is formed;

Depositing a layer of a touch material on a side of the phase retardation layer facing away from the substrate;

Patterning the touch material layer to form a touch trace layer;

The substrate is peeled off, and the touch layer includes the phase retardation layer and the touch trace layer.