CN111190501B - Display panel, preparation method thereof and display device - Google Patents
Display panel, preparation method thereof and display device Download PDFInfo
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- CN111190501B CN111190501B CN201911296326.2A CN201911296326A CN111190501B CN 111190501 B CN111190501 B CN 111190501B CN 201911296326 A CN201911296326 A CN 201911296326A CN 111190501 B CN111190501 B CN 111190501B
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- circuit board
- flexible circuit
- touch
- display panel
- adhesive
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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
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/40—OLEDs integrated with touch screens
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04102—Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Liquid Crystal (AREA)
- Position Input By Displaying (AREA)
Abstract
The application provides a touch display panel, a preparation method thereof and a display device, wherein the touch display panel comprises a touch layer, a flexible circuit board and a polaroid; the side surface of the flexible circuit board, the touch layer and the polaroid form at least one gap; the touch display panel further comprises an adhesive filled into the gap. The application has the technical effects that the display effect of the display panel is prevented from being influenced by bubbles entering the display area, and the flexible circuit board is prevented from being broken or separated from the touch control layer in the bending process.
Description
Technical Field
The application relates to the field of display, in particular to a touch display panel, a preparation method thereof and a display device.
Background
In recent years, narrow-frame mobile phones have been attracting attention. Firstly, the narrow frame can bring higher screen occupation ratio, so that the terminal product can be integrated into a larger display screen in a smaller machine body scale; and secondly, the visual effect brought by the narrow-frame display screen is excellent, and more perfect video and game experience can be brought. With the continuous progress of the process and the research innovation of the technology, ultra-narrow frames and even no frames are the development trend in the future.
At present, the touch module of the mainstream OLED display product adopts an externally hung touch pad form, as shown in fig. 1, including a touch layer 100 (TP), a flexible circuit board 200 (TP FPC) and a polarizer 300 (POL), in order to realize a narrow frame display screen, the bonding area of the flexible circuit board 200 is limited, so that there is a great risk in bonding between the polarizer 300 and the bonding area of the flexible circuit board 200, and bubbles 400 are generated, and if the bubbles 400 enter a display area, the display effect of the display area can be affected.
In the prior art, in order to solve the problem, an open slot is reserved on the polarizer for bonding the flexible circuit board, but if the bonding length of the flexible circuit board and the touch layer is very small, the flexible circuit board is easy to break or break away from the touch layer and other adverse phenomena when the flexible circuit board is bent.
Disclosure of Invention
An object of the present application is to solve the technical problem that bubbles may exist between a middle polarizer and a flexible circuit board in a display panel in the prior art, which affects the display effect of a display device.
Another object of the present application is to solve the technical problem that the flexible circuit board of the display panel in the prior art is easy to break or separate from the touch layer.
In order to achieve the above object, the present application provides a touch display panel, including a touch layer; the flexible circuit board is bonded to the surface of one side of the touch layer; the polaroid is arranged on the surfaces of the touch control layer and the flexible circuit board; the side surface of the flexible circuit board, the touch layer and the polaroid form at least one gap; the touch display panel further comprises an adhesive filled into the gap.
Further, the adhesive fills the gap.
Further, the thickness of the adhesive is smaller than that of the flexible circuit board.
Further, the adhesive is attached to three sides of the flexible circuit board.
Further, one end of the flexible circuit board is bonded to the surface of one side of the touch layer, and the other end of the flexible circuit board is bent to the back surface of the touch layer.
Further, the touch display panel further comprises a pressure sensitive adhesive, and the pressure sensitive adhesive is arranged between the flexible circuit board and the touch layer.
In order to achieve the above objective, the present application further provides a display device, including the touch display panel described above.
In order to achieve the above object, the present application further provides a method for manufacturing a touch display panel, including the following steps: providing a touch layer; bonding a flexible circuit board on the upper surface of the touch layer; an adhesive coating step, namely coating an adhesive on at least one side surface of the flexible circuit board; a polaroid attaching step, namely attaching a polaroid on the upper surfaces of the touch layer and the flexible circuit board; the side surface of the flexible circuit board, the touch layer and the polaroid form at least one gap; the adhesive fills the gap.
Further, after the polarizer attaching step, the method for manufacturing the touch display panel further includes a defoaming treatment step, and the size of the gap is reduced, so that the gap is filled with the adhesive.
Further, in the defoaming treatment step, the adhesive is in a fluid or semi-fluid state under the environment that the air pressure is 0.3-0.6 MPA and the temperature is 30-80 ℃ to fill the gap.
The application has the technical effects that the adhesive is filled between the polaroid and the touch layer of the display panel, so that the gap between the polaroid and the touch layer is reduced as much as possible, and bubbles are prevented from being reserved in the gap to influence the display effect of the display panel. Meanwhile, the adhesive is arranged between the polaroid and the flexible circuit board, so that the fixing effect between the polaroid and the flexible circuit board can be improved, and the flexible circuit board is prevented from being broken or separated from the touch control layer due to bending of the flexible circuit board.
Drawings
The technical solution and other advantageous effects of the present application will be made apparent by the following detailed description of the specific embodiments of the present application with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of a touch display panel in the prior art;
fig. 2 is a flowchart of a method for manufacturing a touch display panel according to an embodiment of the application;
FIG. 3 is a schematic diagram of a touch display panel after a bonding step of a flexible printed circuit board according to an embodiment of the present application;
FIG. 4 is a schematic diagram of a touch display panel after an adhesive coating step according to an embodiment of the present application;
FIG. 5 is a top view of the touch display panel after the adhesive coating step according to the embodiment of the application;
FIG. 6 is a schematic diagram of a touch display panel after a polarizer attaching step according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of a touch display panel according to an embodiment of the application.
The partial components are identified as follows:
100. a touch layer; 200. a flexible circuit board; 300. a polarizer; 400. air bubbles;
1. a touch layer; 2. a flexible circuit board; 3. an adhesive; 4. a polarizer;
41. a first section; 42. a second section; 43. and a third portion.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to fall within the scope of the application.
In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present application, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
The following disclosure provides many different embodiments, or examples, for implementing different features of the application. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the application. Furthermore, the present application may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.
As shown in fig. 2, the present embodiment provides a method for manufacturing a touch display panel, which includes steps S1 to S5.
S1, providing a touch layer for realizing a touch function.
S2, a flexible circuit board bonding step is carried out, wherein a layer of pressure-sensitive adhesive is coated on the upper surface of the touch layer 1, the pressure-sensitive adhesive has good conductive performance, the flexible circuit board 2 is bonded to the touch layer 1 (see fig. 3) through the pressure-sensitive adhesive, the electrical connection between the flexible circuit board 2 and the touch layer 2 is realized, the flexible circuit board 2 can be bent to the back surface of the touch layer 1, the area of a non-display area is reduced, and the screen occupation ratio of the display device can be improved.
And S3, an adhesive coating step, namely coating a layer of adhesive 3 on three sides of one end of the flexible circuit board 2 bonded to the touch layer 1 (see fig. 4 and 5), wherein the adhesive 3 is made of synthetic resin, a diluent, a curing agent, an initiator and the like. After coating, at room temperature, the adhesive 3 is solid, and the thickness of the adhesive 3 is smaller than that of the flexible circuit board 2, so that the circuit on the flexible circuit board 2 is prevented from being covered due to overflow of the adhesive 3 in the subsequent lamination process, and the normal use of the circuit is further affected.
And S4, a polaroid 4 (see FIG. 6) is stuck on the upper surface of the touch control layer 1, and the polaroid 4 plays a role in polarizing. The polarizer 4, the touch layer 1 and the side surface of the flexible circuit board 2 form at least one gap, and the adhesive 3 coated on the side surface of the flexible circuit board 2 is filled into the gap. In the lamination process of the polarizer 4, the outside of the polarizer 4 is subjected to a certain pressure, so that the gap becomes as small as possible. The polarizer 4 includes a first portion 41, a second portion 42 and a third portion 43 that are integrally disposed, where the first portion 41 is attached to the upper surface of the touch layer 1, the second portion 42 is disposed on the upper surface of the adhesive 3, at this time, a part of a gap may still be left between the second portion 42 and the adhesive 3, the gap is not completely eliminated, a small amount of gas may be left to form bubbles, and the third portion 43 is attached to the upper surface of the flexible circuit board 2.
S5, a defoaming treatment step, wherein a small amount of gas remained between the second part 42 and the touch control layer 1 still forms bubbles to influence the display effect of the display panel, so that the touch control display panel needs to be further treated in a defoaming treatment mode, the gap is further reduced, the gap is filled with the adhesive 3, and the bubbles in the touch control display panel are effectively removed. In the defoaming treatment process, the touch display panel is arranged in an environment with the air pressure of 0.3-0.6 MPA and the temperature of 30-80 ℃, at this time, the adhesive 3 is in a fluid state or a semi-fluid state, the shape of the adhesive is easy to change, after the polarizer 4 is stressed, the gap is easy to be pressed down, the adhesive 3 can fill the gap between the polarizer 4 and the touch layer 1, so that the second part 42 of the polarizer 4 is completely attached to the adhesive 3 (see fig. 7), the technical problem that the display area is invalid due to the fact that air bubbles enter the display area of the display panel is avoided, and the display efficiency of the touch display panel is improved.
The technical effect of the touch display panel of the embodiment is that the adhesive is filled between the polarizer and the touch layer of the display panel, so that the gap between the polarizer and the touch layer is reduced as much as possible, and bubbles are prevented from remaining in the gap to affect the display effect of the display panel. Meanwhile, the adhesive is arranged between the polaroid and the flexible circuit board, so that the fixing effect between the polaroid and the flexible circuit board can be improved, and the flexible circuit board is prevented from being broken or separated from the touch control layer due to bending of the flexible circuit board.
The embodiment provides a display device, which comprises a touch display panel as shown in fig. 7, wherein the touch display panel comprises a touch layer 1, a flexible circuit board 2, an adhesive 3 and a polarizer 4.
The touch control layer 1 realizes a touch control function and can be arranged above a pixel layer of the display device.
The flexible circuit board 2 is bonded to the upper surface of the touch layer 1 through a pressure sensitive adhesive, and the pressure sensitive adhesive has good conductive performance, so that good electrical connection is formed between the flexible circuit board 2 and the touch layer 1. The flexible circuit board 2 can be bent to the back of the touch layer 1, so that an ultra-narrow frame is realized.
The adhesive 3 is filled in at least one gap defined by the touch layer 1, the side surface of the flexible circuit board 2 and the polarizer 4, in this embodiment, the adhesive 3 fills the gap as much as possible, no air remains in the gap, and no air bubbles are formed, thereby improving the display effect of the display panel. The adhesive 3 is attached to three sides of the bonded end of the flexible circuit board 2, and the adhesive 3 is made of synthetic resin, a diluent, a curing agent, an initiator and the like. At this time, the adhesive 3 is solid, the thickness of the adhesive 3 is smaller than that of the flexible circuit board 2, and the circuit on the flexible circuit board 2 is covered due to overflow of the adhesive 3 in the subsequent lamination process, so that normal use of the circuit is affected.
The polaroid 4 is attached to the upper surfaces of the touch layer 1 and the flexible circuit board 2, so that a polarizing function is realized. The polaroid 4 includes first portion 41, second portion 42 and third portion 43 that the integration set up, first portion 41 laminating is to the upper surface of touch-control layer 1, the upper surface of gluing agent 3 is located to second portion 42, third portion 43 laminating is to the upper surface of flexible line way board 2 for gluing agent 3 fills between second portion 42 and touch-control layer 1, makes the second portion 42 of polaroid 4 laminate completely with gluing agent 3, avoids the bubble to enter into display panel's display area and leads to the technical problem of display area inefficacy, has improved touch-control display panel's display efficiency.
The adhesive 3 is filled in at least one gap defined by the touch layer 1, the side surface of the flexible circuit board 2 and the polaroid 4, so that the fixing effect among the touch layer 1, the flexible circuit board 2 and the polaroid 4 can be improved, and the flexible circuit board 2 is prevented from being broken or separated from the touch layer 1 due to bending of the flexible circuit board 2.
The technical effect of the touch display panel of the embodiment is that the adhesive is filled between the polarizer and the touch layer of the display panel, so that the gap between the polarizer and the touch layer is reduced as much as possible, and bubbles are prevented from remaining in the gap to affect the display effect of the display panel. Meanwhile, the adhesive is arranged between the polaroid and the flexible circuit board, so that the fixing effect between the polaroid and the flexible circuit board can be improved, and the flexible circuit board is prevented from being broken or separated from the touch control layer due to bending of the flexible circuit board.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.
The display panel, the preparation method thereof and the display device provided by the embodiment of the application are described in detail, and specific examples are applied to explain the principle and the implementation mode of the application, and the description of the above examples is only used for helping to understand the technical scheme and the core idea of the application; those of ordinary skill in the art will appreciate that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.
Claims (10)
1. A touch display panel, comprising:
a touch layer;
the flexible circuit board is bonded to the surface of one side of the touch layer; and
the polaroid is arranged on the surfaces of the touch control layer and the flexible circuit board;
the side surface of the flexible circuit board, the touch layer and the polaroid form at least one gap;
the touch display panel further comprises an adhesive filled into the gap;
the polarizer comprises a first part, a second part and a third part which are integrally arranged, wherein the first part is attached to the surface of the touch layer, the second part is arranged on the surface of the adhesive, and the third part is attached to the surface of the flexible circuit board.
2. The touch display panel of claim 1,
the adhesive fills the gap.
3. The touch display panel of claim 1,
the thickness of the adhesive is smaller than that of the flexible circuit board.
4. The touch display panel of claim 1,
the adhesive is attached to three sides of the flexible circuit board.
5. The touch display panel of claim 1,
one end of the flexible circuit board is bonded to the surface of one side of the touch layer, and the other end of the flexible circuit board is bent to the back surface of the touch layer.
6. The touch display panel of claim 1, further comprising
And the pressure sensitive adhesive is arranged between the flexible circuit board and the touch layer.
7. A display device comprising the touch display panel according to any one of claims 1 to 6.
8. The preparation method of the touch display panel is characterized by comprising the following steps of:
providing a touch layer;
bonding a flexible circuit board on the upper surface of the touch layer;
an adhesive coating step, namely coating an adhesive on at least one side surface of the flexible circuit board; and
a polaroid attaching step, namely attaching a polaroid on the upper surfaces of the touch control layer and the flexible circuit board;
the side surface of the flexible circuit board, the touch layer and the polaroid form at least one gap;
the adhesive is filled into the gap;
the polarizer comprises a first part, a second part and a third part which are integrally arranged, wherein the first part is attached to the surface of the touch layer, the second part is arranged on the surface of the adhesive, and the third part is attached to the surface of the flexible circuit board.
9. The method for manufacturing a touch display panel according to claim 8, wherein,
after the polaroid attaching step, the method further comprises
And a defoaming treatment step, wherein the size of the gap is reduced, so that the gap is filled with the adhesive.
10. The method for manufacturing a touch display panel according to claim 9, wherein,
in the step of the de-bubbling treatment,
under the environment that the air pressure is 0.3-0.6 MPA and the temperature is 30-80 ℃,
the adhesive is in a fluid or semi-fluid state and fills the gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911296326.2A CN111190501B (en) | 2019-12-16 | 2019-12-16 | Display panel, preparation method thereof and display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911296326.2A CN111190501B (en) | 2019-12-16 | 2019-12-16 | Display panel, preparation method thereof and display device |
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| CN111190501A CN111190501A (en) | 2020-05-22 |
| CN111190501B true CN111190501B (en) | 2023-09-26 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111698828B (en) * | 2020-06-23 | 2021-11-02 | 昆山国显光电有限公司 | Flexible circuit board, composite film layer and display module |
| CN111883004B (en) * | 2020-07-31 | 2022-07-08 | 维信诺科技股份有限公司 | Display panel, display device and preparation method of display panel |
| CN113328056B (en) * | 2021-05-31 | 2022-09-02 | 武汉天马微电子有限公司 | Display panel and display device |
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| CN109254696A (en) * | 2018-11-23 | 2019-01-22 | 京东方科技集团股份有限公司 | Touch module and touch control display apparatus |
| CN109445167A (en) * | 2018-12-19 | 2019-03-08 | 武汉华星光电半导体显示技术有限公司 | Display device |
| CN109728004A (en) * | 2019-01-09 | 2019-05-07 | 京东方科技集团股份有限公司 | A kind of array substrate and preparation method thereof, display device |
| CN110286791A (en) * | 2019-06-24 | 2019-09-27 | 京东方科技集团股份有限公司 | Touch base plate and preparation method, display panel and preparation method, display device |
| CN110262701A (en) * | 2019-07-30 | 2019-09-20 | 昆山国显光电有限公司 | A kind of display panel and display device |
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