CN110611039A - Manufacturing method of flexible OLED display device and flexible OLED display device - Google Patents
Manufacturing method of flexible OLED display device and flexible OLED display device Download PDFInfo
- Publication number
- CN110611039A CN110611039A CN201910769915.1A CN201910769915A CN110611039A CN 110611039 A CN110611039 A CN 110611039A CN 201910769915 A CN201910769915 A CN 201910769915A CN 110611039 A CN110611039 A CN 110611039A
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- flexible oled
- oled panel
- binding
- area
- display area
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- 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
- G09F9/301—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 flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
-
- 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
- H10K59/12—Active-matrix OLED [AMOLED] displays
Abstract
The application discloses a manufacturing method of a flexible OLED display device and the flexible OLED display device, wherein the method comprises the following steps: providing a flexible OLED panel; the flexible OLED panel comprises a display area and a binding area; forming a display area backboard at a display area corresponding to the back of the flexible OLED panel, and forming a binding area backboard at a binding area corresponding to the back of the flexible OLED panel by adopting a photosensitive adhesive material; adopt photosensitive glue to replace the backplate that corresponds original district of binding as the backplate material, played the same guard action with original backplate, simultaneously, in the manufacturing process, through the mode coating of gluing, the pressure of control point that both can be fine is glued, is far less than the pressure of gyro wheel laminating among the prior art, avoids damaging integrated circuit, the control that again can be fine binds the thickness of district's backplate, in addition, the quantity that has also greatly reduced the production bubble to the risk of Mark (sign) on sheltering from flexible OLED panel has been reduced.
Description
Technical Field
The application relates to the technical field of display panels, in particular to a manufacturing method of a flexible OLED display device and the flexible OLED display device.
Background
Compared with an LCD panel, the flexible OLED panel has the advantages of flexibility, bending, self-luminescence, high reaction speed and the like, so the flexible OLED panel gradually draws attention of people, and the flexible OLED panel is considered to replace the LCD panel to become a mainstream display panel of the next generation; however, the disadvantages of the flexible OLED panels in terms of manufacturing processes are still evident, OLED technology is still far from mature, and many processes need to be improved step by step.
Particularly, in the process of realizing flexible bending, a rigid substrate (such as a Glass substrate) carried by an incoming material of an OLED module section is an unbendable material, in the prior art, the rigid substrate and a flexible substrate On the rigid substrate are subjected to laser lift Off (LLO for short), then, a layer of backplane is attached to the flexible substrate to protect a flexible OLED panel, and in consideration of the bending function of the flexible OLED panel, the backplane is divided into two sections by a slotting method, the two sections of backplane are respectively attached to a display area and a binding area corresponding to the flexible OLED panel, but in the actual attaching process, many bubbles are often generated, particularly, when the panel is cop (chip pi) packaged, an integrated circuit is arranged at the attaching position of one section of the backplane corresponding to the binding area, and the integrated circuit is easily damaged by pressure in the roller attaching process, moreover, because the integrated circuit is attached to the terminal area and has a height difference, excessive bubbles can be generated due to uneven surface when the roller is attached.
Disclosure of Invention
The embodiment of the application provides a manufacturing method of a flexible OLED display device and the flexible OLED display device, and aims to solve the problems that an integrated circuit is damaged and bubbles are generated to influence the whole process flow when a backboard is attached.
An embodiment of the present application provides a method for manufacturing a flexible OLED display device, including:
providing a flexible OLED panel, wherein the flexible OLED panel comprises a display area and a binding area;
and forming a display area backboard at the display area corresponding to the back surface of the flexible OLED panel, and forming a binding area backboard at the binding area corresponding to the back surface of the flexible OLED panel by adopting a photosensitive adhesive material.
According to a preferred embodiment of the present invention, the forming of the binding region backplane at the binding region corresponding to the back surface of the flexible OLED panel using a photosensitive adhesive material includes:
coating a photosensitive adhesive layer at a binding area corresponding to the back of the flexible OLED panel;
and curing the photosensitive adhesive layer to form the binding area backboard.
According to a preferred embodiment of the present invention, the coating of the photosensitive adhesive layer at the binding region corresponding to the back surface of the flexible OLED panel includes:
and coating a photosensitive adhesive layer on the binding area on the back surface of the flexible OLED panel through a dispensing process.
According to a preferred embodiment of the present invention, the curing the photosensitive adhesive layer to form the back plate of the bonding area includes:
and illuminating the photosensitive adhesive layer to solidify the photosensitive adhesive layer to form the binding area backboard.
According to a preferred embodiment of the present invention, the forming the display area backplane at the display area corresponding to the back surface of the flexible OLED panel includes:
and a roller pressing mode is adopted, so that the display area back plate is tightly attached to the display area corresponding to the back of the flexible OLED panel.
According to a preferred embodiment of the present invention, the thickness of the display area back plate is equal to the thickness of the binding area back plate.
According to a preferred embodiment of the present invention, the thickness of the binding region back plate ranges from 70um to 110 um.
According to the above object of the present invention, there is also provided a flexible OLED display device including:
a flexible OLED panel including a display area and a binding area;
the display area back plate is formed at a display area corresponding to the back surface of the flexible OLED panel;
and the binding area backboard is formed at the binding area corresponding to the back surface of the flexible OLED panel, and the material of the binding area backboard is photosensitive glue.
According to a preferred embodiment of the present invention, the thickness of the display area back plate is equal to the thickness of the binding area back plate.
According to a preferred embodiment of the present invention, the flexible OLED display device further includes:
bending the groove: the flexible OLED display device is formed between the display area back plate and the binding area back plate and used for bending at the bending groove to enable the flexible OLED display device to be in a bending state.
The beneficial effect of this application does: the invention adopts photosensitive adhesive as a back plate material to replace a back plate corresponding to the original binding area, plays the same protection role as the original back plate, simultaneously, in the manufacturing process, the coating is carried out in a glue dispensing mode, the pressure of the glue dispensing can be well controlled and is far less than the pressure of roller fitting in the prior art, the damage to an integrated circuit is avoided, the thickness of the back plate of the binding area can be well controlled, in addition, the quantity of generated bubbles is greatly reduced, and the risk of shielding Mark (identification) on the flexible OLED panel is reduced.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic flow chart of a method for manufacturing a flexible OLED display device according to an embodiment of the present disclosure;
fig. 2 is a schematic block diagram of a process of manufacturing a backplane in a method for manufacturing a flexible OLED display device according to an embodiment of the present disclosure;
fig. 3 is a schematic cross-sectional structure diagram of a flexible OLED display device according to an embodiment of the present disclosure.
Detailed Description
Specific structural and functional details disclosed herein are merely representative and are provided for purposes of describing example embodiments of the present application. This application may, however, be embodied in many alternate forms and should not be construed as limited to only the embodiments set forth herein.
In the description of the present application, it is to be understood that the terms "center," "lateral," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and therefore should not be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified. Furthermore, the term "comprises" and any variations thereof is intended to cover non-exclusive inclusions.
The present application is further described below with reference to the accompanying drawings and examples.
The embodiment of the application provides a manufacturing method of a flexible OLED display device, in the embodiment, a flexible OLED panel for cop (chip On pi) packaging is taken as an example (but not limited thereto, the flexible OLED panel can be a flexible OLED panel with other structure types); as shown in fig. 1, the method for manufacturing the flexible OLED display device includes:
step S1: providing a flexible OLED panel, wherein the flexible OLED panel comprises a display area and a binding area;
in step S1, the flexible OLED panel at least includes a flexible substrate and a flexible OLED functional layer on the flexible substrate, in this embodiment, the flexible substrate is preferably made of polyimide, but not limited thereto; and, the flexible OLED panel includes at least a display region and a binding region; obviously, the display area described in the present application at least includes an area where the flexible OLED panel emits light for display, and compared with the display area, it can be understood by those skilled in the art that the binding area may be a partial area of the area where the flexible OLED panel does not emit light for display.
Step S2: and forming a display area backboard at the display area corresponding to the back surface of the flexible OLED panel, and forming a binding area backboard at the binding area corresponding to the back surface of the flexible OLED panel by adopting a photosensitive adhesive material.
Forming a display area backboard at a display area corresponding to the back of the flexible OLED panel in step S2, wherein the area of the display panel is larger than or equal to the area of the display area, and the display area is completely covered; it can be understood that, in the back of the flexible OLED panel, the back of the flexible OLED panel is a side of the flexible substrate opposite to the flexible OLED functional layer; in an actual manufacturing process, the flexible substrate and the flexible OLED functional layer are both formed on a rigid substrate (such as a glass substrate, a silicon plate, and the like), and the flexible substrate is peeled from the rigid substrate to obtain the flexible OLED panel of the present invention.
In step S2, a binding region backplane is formed at a binding region corresponding to the back of the flexible OLED panel by using a photosensitive adhesive material, where the area of the binding region backplane is greater than or equal to the area of the binding region, and the binding region is completely covered; in this example, the photosensitive adhesive material is uv (ultraviolet rays) adhesive.
It should be noted that there is no limitation on the manufacturing sequence of the display area backplane and the bonding area backplane in the first step S2, and the manufacturing sequence may be that one of the display area backplane and the bonding area backplane is manufactured first, and then the other backplane is manufactured, or that one of the display area backplane and the bonding area backplane is manufactured first, and the other backplane is manufactured in the manufacturing process of the backplane, or other manufacturing sequence relationships.
And secondly, when the display area back plate and the binding area back plate are manufactured, obviously, a bending groove is formed between the display area back plate and the binding area back plate, and the width of the bending groove is more than or equal to that of the bending section on the flexible OLED panel.
Thirdly, it is obvious that the flexible OLED panel in the present invention includes a plurality of display regions and binding regions, and it can be understood that, in each region, the display region back plate and the binding region back plate are manufactured, and according to actual needs, if a bending function is provided between two adjacent regions, a bending groove needs to be formed in each region.
In this embodiment, tentatively, taking manufacturing a binding region backplane first and then manufacturing a display region backplane as an example, forming a display region backplane at a display region corresponding to the back of the flexible OLED panel in step 2, and forming a binding region backplane at a binding region corresponding to the back of the flexible OLED panel by using a photosensitive adhesive material is described in detail, as shown in fig. 2:
in this embodiment, the forming of the bonding area backplane at the bonding area corresponding to the back surface of the flexible OLED panel by using the photosensitive adhesive material in step 2 includes:
step S21: coating a photosensitive adhesive layer at a binding area corresponding to the back of the flexible OLED panel;
step S22: curing the photosensitive adhesive layer to form the binding area backboard;
specifically, in this embodiment, a photosensitive adhesive layer is coated on the binding region on the back surface of the flexible OLED panel through a dispensing process; the flexible glue coating machine is used for carrying out glue dispensing process, in the glue dispensing process, the control of the glue dispensing pressure is realized by controlling the stroke of the flexible glue coating machine, the control precision value of the glue dispensing pressure is far smaller than the pressure value of a roller in the existing roller laminating mode, the flexible OLED panel binding area part (such as an integrated circuit area) is not damaged, in the glue dispensing process of the flexible glue coating machine, generated bubbles are few or even can be ignored, and the risk of shielding marks (Mark) on the flexible OLED panel and influencing the performance of an integrated circuit is avoided.
In addition, in this embodiment, the coated photosensitive adhesive is irradiated by ultraviolet light, and is cured to form the binding region back plate; plays a role in protecting the back plate in the prior art;
in this embodiment, the thickness range of the binding region back plate is 70um to 110 um; it can be understood that, in the present invention, the fabrication of the back plate in the binding region is not limited to one-time coating and one-time curing; in the specific manufacturing process of the binding area back plate, multiple times of coating can be carried out according to specific process requirements, actual operating environments and the like, and then the curing is finished after each coating is finished.
In this embodiment, the forming a display area backplane at the display area corresponding to the back of the flexible OLED panel in step 2 includes:
step S23: and a roller pressing mode is adopted, so that the display area back plate is tightly attached to the display area corresponding to the back of the flexible OLED panel.
It can be understood that, in the present invention, the manufacturing of the display area backplane in step S23 is not limited to a roller pressing manner, so that the display area backplane is closely attached to the display area corresponding to the back of the flexible OLED panel; other modes are also possible, such as the mode of coating by photosensitive paste and then curing in connection with step S21 and step S22 in the present invention; in this embodiment, it needs to be further explained that the thickness of the display area back plate is equal to that of the binding area back plate.
To sum up, the manufacturing method of the flexible OLED display device provided by the application has the advantages that in the manufacturing process, the pressure of dispensing can be well controlled by coating in a dispensing mode, the pressure is far smaller than the pressure of roller fitting in the prior art, damage to an integrated circuit is avoided, the thickness of a back plate of a binding area can be well controlled, in addition, the quantity of generated bubbles is greatly reduced, and the risk of shielding Mark (identification) on a flexible OLED panel is reduced.
The present application also provides a flexible OLED display device, schematically, as shown in fig. 3, including:
a flexible OLED panel 1 comprising a display area and a binding area;
the display area back plate 2 is formed at a display area corresponding to the back surface of the flexible OLED panel;
and the binding area backboard 3 is formed at the binding area corresponding to the back surface of the flexible OLED panel, and the material of the binding area backboard is photosensitive glue.
The flexible OLED panel 1 may be flexible OLED panels with different structures, and in this embodiment, the flexible OLED panel at least includes a flexible substrate 11 and a flexible OLED functional layer on the flexible substrate 11; referring to fig. 3 in combination, the flexible OLED functional layer includes at least a driving thin film transistor array layer 12 formed on a flexible substrate 11, a flexible OLED light emitting layer 13 formed on the driving thin film transistor array layer 12, and a transparent encapsulation layer 14 for encapsulating the flexible OLED light emitting layer 13; it should be further explained that the structure of the flexible OLED panel 1 may be either a prior art structure or other structures, and is not described herein again; obviously, the binding area backboard 3 formed on the flexible OLED panel 1 can well protect the flexible OLED panel 1, and meanwhile, the flexible OLED panel 1 is prevented from being damaged due to the adoption of the photosensitive adhesive, so that the yield of the flexible OLED panel 1 is improved.
As shown in fig. 3, the flexible OLED display device further includes a bending groove 4: the flexible OLED display device is formed between the display area back plate and the binding area back plate and used for bending at the bending groove to enable the flexible OLED display device to be in a bending state; it can be understood that, the bending direction of the flexible OLED panel 1 in the bending groove 4 is not limited, but in this embodiment, relative to the flexible substrate 11 corresponding to the bending groove 4 as a rotation center, the binding region backplane 3 and the relevant portion of the corresponding flexible OLED panel 1 rotate clockwise, so that the binding region backplane 3 approaches the display region backplane 2, and finally the flexible OLED display device is in a bending state.
Specifically, in the embodiment of the present application, the flexible OLED display device may be specifically applied to any product or component having a display function, such as a display, a television, a digital photo frame, a mobile phone, or a tablet computer.
To sum up, the flexible OLED display device that this application provided adopts photosensitive glue to replace the backplate that corresponds original binding district as the backplate material, has played fine guard action to flexible OLED panel, compares in present structure, in this application of preparation binding district backplate in-process, each item technological index such as pressure, stroke thickness are more convenient for handle the accuse on the technology, and structure scientific and reasonable more can be fine realize the batch production of high yields.
In summary, although the present application has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present application, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application, so that the scope of the present application shall be determined by the appended claims.
Claims (10)
1. A manufacturing method of a flexible OLED display device is characterized by comprising the following steps:
providing a flexible OLED panel, wherein the flexible OLED panel comprises a display area and a binding area;
and forming a display area backboard at the display area corresponding to the back surface of the flexible OLED panel, and forming a binding area backboard at the binding area corresponding to the back surface of the flexible OLED panel by adopting a photosensitive adhesive material.
2. The method as claimed in claim 1, wherein the forming of the bonding region backplane at the bonding region corresponding to the back surface of the flexible OLED panel using a photosensitive adhesive material comprises:
coating a photosensitive adhesive layer at a binding area corresponding to the back of the flexible OLED panel;
and curing the photosensitive adhesive layer to form the binding area backboard.
3. The method as claimed in claim 2, wherein the step of coating a photosensitive adhesive layer on the binding region corresponding to the back surface of the flexible OLED panel comprises:
and coating a photosensitive adhesive layer on the binding area on the back surface of the flexible OLED panel through a dispensing process.
4. The method as claimed in claim 2, wherein the curing the photosensitive adhesive layer to form the bonding area backplane comprises:
and illuminating the photosensitive adhesive layer to solidify the photosensitive adhesive layer to form the binding area backboard.
5. The method as claimed in claim 1, wherein the forming of the display area backplane at the display area corresponding to the back of the flexible OLED panel comprises:
and a roller pressing mode is adopted, so that the display area back plate is tightly attached to the display area corresponding to the back of the flexible OLED panel.
6. A method of manufacturing a flexible OLED display device according to any one of claims 1 to 4,
the thickness of the display area back plate is equal to that of the binding area back plate.
7. The method of claim 6, wherein the thickness of the binding region backplane is in a range of 70um to 110 um.
8. A flexible OLED display device, comprising:
a flexible OLED panel including a display area and a binding area;
the display area back plate is formed at a display area corresponding to the back surface of the flexible OLED panel;
and the binding area backboard is formed at the binding area corresponding to the back surface of the flexible OLED panel, and the material of the binding area backboard is photosensitive glue.
9. The flexible OLED display device claimed in claim 8, wherein the thickness of the display area backplane is equal to the thickness of the binding area backplane.
10. The flexible OLED display device claimed in claim 8, further comprising:
bending the groove: the flexible OLED display device is formed between the display area back plate and the binding area back plate and used for bending at the bending groove to enable the flexible OLED display device to be in a bending state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910769915.1A CN110611039A (en) | 2019-08-20 | 2019-08-20 | Manufacturing method of flexible OLED display device and flexible OLED display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910769915.1A CN110611039A (en) | 2019-08-20 | 2019-08-20 | Manufacturing method of flexible OLED display device and flexible OLED display device |
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| CN110611039A true CN110611039A (en) | 2019-12-24 |
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| CN201910769915.1A Pending CN110611039A (en) | 2019-08-20 | 2019-08-20 | Manufacturing method of flexible OLED display device and flexible OLED display device |
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| CN113763815A (en) * | 2021-09-03 | 2021-12-07 | 深圳市华星光电半导体显示技术有限公司 | Display panel and preparation method thereof |
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