CN111221438A - Touch display panel and preparation method thereof - Google Patents
Touch display panel and preparation method thereof Download PDFInfo
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- CN111221438A CN111221438A CN202010008260.9A CN202010008260A CN111221438A CN 111221438 A CN111221438 A CN 111221438A CN 202010008260 A CN202010008260 A CN 202010008260A CN 111221438 A CN111221438 A CN 111221438A
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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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Abstract
The invention discloses a touch display panel and a preparation method thereof, wherein the method comprises the following steps: providing a first substrate, and forming a first functional layer on the first substrate; providing a second substrate, forming a touch layer on the first surface of the second substrate, and forming a protective layer on the touch layer; turning over the second substrate to form a second functional layer on a second surface of the second substrate; the first substrate is provided with a first functional layer, and one surface of the first substrate, which faces to a second surface of the second substrate, is matched and bonded to form a liquid crystal box; and removing the protective layer on the second substrate. The touch control panel has the advantages that the protective layer capable of being removed through reworking is additionally arranged on the touch control layer in the preparation process of the panel, so that the risk of poor products caused by scratching of the touch control layer in the preparation process can be effectively reduced, and the method is simple in step, low in cost and easy for industrial production.
Description
Technical Field
The invention relates to the technical field of display, in particular to a touch display panel and a preparation method thereof.
Background
The touch screen is used as the simplest human-computer interaction tool, and has great market value. The touch screen technology popular in the market at present is mainly external touch, which brings technical problems of low penetration rate, low resolution, high cost and the like, so that the embedded touch display technology with better development effect is a future market development trend.
In the existing embedded touch display technology, an On-cell (a touch screen is embedded between a color filter substrate and a polarizer of a display screen) technology is widely applied, but in the actual preparation process, a plurality of difficulties still exist, so that the problems of complex preparation process, low yield and the like are caused.
Disclosure of Invention
In order to solve the above problem, in a first aspect, the present invention provides a method for manufacturing a touch display panel, where the method includes:
s01: providing a first substrate, and forming a first functional layer on the first substrate;
s02: providing a second substrate, forming a touch layer on the first surface of the second substrate, and forming a protective layer on the touch layer;
s03: turning over the second substrate to form a second functional layer on a second surface of the second substrate;
s04: the first substrate is provided with a first functional layer, one surface of the first substrate is opposite to the second surface of the second substrate in pair bonding, and a liquid crystal layer is formed in the first substrate;
s05: and removing the protective layer on the second substrate.
Further, the protective layer is formed by a coating process.
Further, the protective layer is a whole organic polymer film and completely covers the touch layer.
Further, the thickness of the protective layer is 2-5 microns.
Further, in step S05, the removing the protective layer on the second substrate includes: and spraying a stripping liquid to the protective layer to enable the protective layer and the stripping liquid to generate a chemical reaction, so that the protective layer is removed.
Further, in step S02, the step of forming a touch layer on the first surface of the second substrate includes: and sequentially forming a transmitting electrode, a dielectric layer, a receiving electrode and an insulating layer on the first surface of the second substrate.
Further, the material of the transmitting electrode and the receiving electrode is copper, and the material of the dielectric layer and the insulating layer is selected from at least one of silicon nitride and silicon oxide.
Further, in step S01, the step of forming the first functional layer includes: and sequentially forming a thin film transistor layer, a pixel electrode layer and a first alignment film layer.
Further, in step S03, the step of forming the second functional layer includes: and sequentially forming a color filter film layer, a black matrix layer, a common electrode layer and a second alignment film layer.
On the other hand, the invention also provides a touch display panel, which is prepared by adopting the preparation method of the touch display panel.
Has the advantages that: the invention provides a preparation method of a touch display panel, which comprises the steps of firstly forming a touch layer on the back surface of a color film substrate, covering a protective layer which can be removed by reworking on the touch layer, enabling the formed touch layer not to be scratched in the subsequent preparation process by additionally arranging the protective layer, and removing the protective layer after the final preparation of the display panel is finished. The method is simple and convenient to operate, the required manufacturing process is low in cost, and large-scale industrialization is easy to implement.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic text flow chart of a method for manufacturing a touch display panel according to an embodiment of the invention;
fig. 2A-2E are schematic structural flow diagrams of a method for manufacturing a touch display panel according to an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
The following description is presented to enable any person skilled in the art to make and use the invention. In the following description, details are set forth for the purpose of explanation. It will be apparent to one of ordinary skill in the art that the present invention may be practiced without these specific details. In other instances, well-known structures and processes are not shown in detail to avoid obscuring the description of the invention with unnecessary detail. Thus, the present invention is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.
An embodiment of the present invention provides a method for manufacturing a touch display panel, and a specific process please refer to fig. 1 and fig. 2A to 2E in combination, where the method includes:
s01: providing a first substrate 10, and forming a first functional layer 101 on the first substrate 10, i.e. forming the structure shown in fig. 2A;
s02: providing a second substrate 20, and forming a touch layer on a first surface of the second substrate 20, typically, the step of forming the touch layer includes: forming a transmitting electrode 201, a dielectric layer 202, a receiving electrode 203 and an insulating layer 204 on the first surface of the second substrate 20 in sequence, and forming a protective layer 205 on the insulating layer 204 in the touch layer, i.e. forming the structure shown in fig. 2B;
s03: turning over the second substrate 20, and forming a second functional layer 206 on a second surface of the second substrate 20, i.e. the other surface opposite to the first surface, i.e. forming the structure shown in fig. 2C;
s04: the first substrate 10 with the first functional layer 101 is bonded to the second substrate 20 with the second surface facing the first functional layer and the liquid crystal cell 30 is formed therein, that is, the structure shown in fig. 2D is formed;
s05: the protective layer 205 on the second substrate 20 is removed, and the preparation is completed, so as to form the structure shown in fig. 2E.
In some embodiments, the protective layer 205 is formed by a coating process.
In some embodiments, the protective layer 205 is a full-surface organic polymer film, which completely covers the touch layer underneath to protect it from scratches, wherein the material of the organic polymer film may be PFA (a copolymer of a small amount of perfluoropropyl perfluorovinyl ether and polytetrafluoroethylene).
In some embodiments, the thickness of the protection layer 205 is 2 to 5 micrometers, the thickness of the protection layer is not too thin, when the thickness is less than 2 micrometers, the protection capability is too weak, and the risk of scratching the touch layer still exists, and meanwhile, the thickness of the protection layer is not too thick, when the thickness is more than 5 micrometers, the difficulty of subsequent removal is greatly increased, and the risk of affecting the touch effect due to the protection layer residue is generated.
In some embodiments, in step S05, the removing the protective layer 205 on the second substrate 20 includes: the protective layer 205 is removed by spraying a stripping solution, which has a high reaction selectivity and does not react with the underlying insulating layer 204 (typically, silicon nitride or silicon oxide), onto the protective layer 205 so that the protective layer 205 and the stripping solution chemically react with each other.
In some embodiments, in each film layer of the touch layer, the material of the transmitting electrode and the receiving electrode is metal, for example, copper with smaller resistivity; the dielectric layer and the insulating layer are made of at least one material selected from silicon nitride and silicon oxide.
In some embodiments, in step S01, the step of forming the first functional layer 101 includes: a thin film transistor layer, a pixel electrode layer, and a first alignment film layer (not shown) are sequentially formed on the first substrate 10, and a method for forming the film layers is a method commonly used in the art, which is not limited herein.
In some embodiments, in step S03, the step of forming the second functional layer 206 includes: a color filter film layer, a black matrix layer, a common electrode layer and a second alignment film layer (not shown in the figure) are sequentially formed, the second functional layer and the first functional layer cooperate to control the deflection of the liquid crystal molecules, wherein the film layer forming method adopts a method commonly used in the art, and the invention is not limited herein.
On the other hand, the invention also provides a touch display panel prepared by the preparation method.
It should be noted that, in the embodiment of the touch display panel, only the above structure is described, and it is understood that, in addition to the above structure, the touch display panel provided in the embodiment of the present invention may further include any other necessary structure as needed, and the specific structure is not limited herein.
The touch display panel and the manufacturing method thereof provided by the embodiment of the invention are described in detail above, and the principle and the embodiment of the invention are explained by applying specific examples herein, and the description of the above embodiments is only used to help understanding the method and the core idea of the invention; meanwhile, for those skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. A preparation method of a touch display panel is characterized by comprising the following steps:
s01: providing a first substrate, and forming a first functional layer on the first substrate;
s02: providing a second substrate, forming a touch layer on the first surface of the second substrate, and forming a protective layer on the touch layer;
s03: turning over the second substrate to form a second functional layer on a second surface of the second substrate;
s04: the first substrate is provided with a first functional layer, one surface of the first substrate is opposite to the second surface of the second substrate in pair bonding, and a liquid crystal layer is formed in the first substrate;
s05: and removing the protective layer on the second substrate.
2. The method of manufacturing a touch display panel according to claim 1, wherein the protective layer is formed by a coating process.
3. The method of manufacturing a touch display panel according to claim 1, wherein the protective layer is a full-surface organic polymer film and completely covers the touch layer.
4. The method of claim 1, wherein the protective layer has a thickness of 2-5 μm.
5. The method for manufacturing a touch display panel according to claim 1, wherein in step S05, the step of removing the protective layer on the second substrate includes: and spraying a stripping liquid to the protective layer to enable the protective layer and the stripping liquid to generate a chemical reaction, so that the protective layer is removed.
6. The method for manufacturing a touch display panel according to claim 1, wherein in step S02, the step of forming the touch layer on the first surface of the second substrate includes: and sequentially forming a transmitting electrode, a dielectric layer, a receiving electrode and an insulating layer on the first surface of the second substrate.
7. The method according to claim 6, wherein the transmitting electrode and the receiving electrode are made of copper, and the dielectric layer and the insulating layer are made of at least one material selected from silicon nitride and silicon oxide.
8. The method of manufacturing a touch display panel according to claim 1, wherein in step S01, the step of forming the first functional layer includes: and sequentially forming a thin film transistor layer, a pixel electrode layer and a first alignment film layer.
9. The method of manufacturing a touch display panel according to claim 1, wherein in step S03, the step of forming the second functional layer includes: and sequentially forming a color filter film layer, a black matrix layer, a common electrode layer and a second alignment film layer.
10. A touch display panel, wherein the touch display panel is prepared by the method of any one of claims 1 to 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010008260.9A CN111221438A (en) | 2020-01-06 | 2020-01-06 | Touch display panel and preparation method thereof |
| PCT/CN2020/072459 WO2021138932A1 (en) | 2020-01-06 | 2020-01-16 | Touch display panel and preparation method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010008260.9A CN111221438A (en) | 2020-01-06 | 2020-01-06 | Touch display panel and preparation method thereof |
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| CN111221438A true CN111221438A (en) | 2020-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010008260.9A Pending CN111221438A (en) | 2020-01-06 | 2020-01-06 | Touch display panel and preparation method thereof |
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| CN (1) | CN111221438A (en) |
| WO (1) | WO2021138932A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112054073A (en) * | 2020-06-24 | 2020-12-08 | 厦门市三安集成电路有限公司 | Photodiode with light guide structure and manufacturing method thereof |
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| TWI334503B (en) * | 2007-10-12 | 2010-12-11 | Au Optronics Corp | Touch-sensing flat panel display and method for manufacturing the same |
| CN103293737B (en) * | 2012-09-26 | 2016-01-06 | 上海天马微电子有限公司 | Built-in capacitive touch screen liquid crystal display module and driving method thereof |
| CN106066731A (en) * | 2016-05-27 | 2016-11-02 | 京东方科技集团股份有限公司 | A kind of touch-control display panel and preparation method thereof, touch control display apparatus |
| CN109375829A (en) * | 2018-09-06 | 2019-02-22 | 深圳市华鼎星科技有限公司 | A kind of production method of the display device using the double touch-control sensors of metal mesh |
| CN109976575B (en) * | 2019-03-14 | 2023-01-24 | 昆山龙腾光电股份有限公司 | Touch display device |
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2020
- 2020-01-06 CN CN202010008260.9A patent/CN111221438A/en active Pending
- 2020-01-16 WO PCT/CN2020/072459 patent/WO2021138932A1/en active Application Filing
Patent Citations (5)
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| KR20140033675A (en) * | 2012-09-10 | 2014-03-19 | 엘지디스플레이 주식회사 | Cutting apparatus and method for manufacturing touch panel |
| CN104898884A (en) * | 2015-06-16 | 2015-09-09 | 合肥鑫晟光电科技有限公司 | Single glass type touch panel and manufacturing method thereof |
| CN105094486A (en) * | 2015-08-03 | 2015-11-25 | 深圳市华星光电技术有限公司 | Built-in self-capacitance touch display panel and manufacturing method thereof |
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| CN112054073A (en) * | 2020-06-24 | 2020-12-08 | 厦门市三安集成电路有限公司 | Photodiode with light guide structure and manufacturing method thereof |
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| WO2021138932A1 (en) | 2021-07-15 |
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