CN110165072B - Display panel, manufacturing method thereof and display device - Google Patents
Display panel, manufacturing method thereof and display device Download PDFInfo
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- CN110165072B CN110165072B CN201910319091.8A CN201910319091A CN110165072B CN 110165072 B CN110165072 B CN 110165072B CN 201910319091 A CN201910319091 A CN 201910319091A CN 110165072 B CN110165072 B CN 110165072B
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- substrate
- display panel
- display device
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- 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
- H10K50/841—Self-supporting sealing arrangements
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- 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
-
- 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
- H10K59/1201—Manufacture or treatment
Abstract
The invention discloses a display panel, a manufacturing method thereof and a display device, wherein the display panel comprises: the display device comprises a first substrate, a display device and a second substrate which are sequentially stacked; the first substrate is provided with an extension part, and the extension part is a part of the first substrate, which exceeds the orthographic projection of the second substrate on the first substrate; the extension part orientation the second base plate is buckled and is capsulated display panel's edge through the buffer structure that the extension part bending type formed to buffer structure, prevents inside water, oxygen, the pollutant gets into display panel, and this buffer structure is buckled and is formed at display panel's edge through the extension on the first base plate, can play the guard action to display panel's edge, and buffer structure is used for resisting the product and falls the impact to the edge, dispersion stress when falling, promotes the reliability of falling of the product made by display panel from this.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel, a manufacturing method thereof and a display device.
Background
Organic Light Emitting diodes (OLEDs for short) have self-luminous properties, and use very thin Organic material coatings and substrates, so that when current flows through the Organic materials, the Organic materials emit Light. The driving method of the OLED is divided into passive driving and active driving. Among them, the Active driving, i.e. Active-matrix organic Light Emitting Diode (AMOLED for short), has the characteristics of fast response speed, high contrast, wide viewing angle, self-luminescence, etc.; therefore, the liquid crystal display device attracts attention, and is widely applied to mobile phone screens, computer monitors, full-color computers and the like as a new generation display mode.
In the prior art, an OLED structure includes an anode, an organic light emitting layer, a cathode, and an encapsulation substrate formed on a substrate in sequence. At present, an OLED is mainly packaged by adopting a laser technology, wherein the laser technology is to prepare a glass packaging adhesive into a solution with certain viscosity, coat the solution between a substrate and a packaging substrate, heat the solution to remove the solvent, and instantly burn the laser glass packaging adhesive to be molten by utilizing laser so as to bond the substrate and the packaging substrate together; therefore, the capability of preventing water and oxygen is stronger. However, in practical applications, it is found that the probability that the peripheral edge of the OLED display panel falls to the ground first is relatively high, so the rate of damage occurring to the edge is relatively high.
Disclosure of Invention
In view of this, according to a first aspect, an embodiment of the present invention provides a display panel, including: the display device comprises a first substrate, a display device and a second substrate which are sequentially stacked; the first substrate is provided with an extension part, and the extension part is a part of the first substrate, which exceeds the orthographic projection of the second substrate on the first substrate; the extending part bends towards the second substrate to form a buffer structure.
Optionally, the extending portion is bent to a surface of the second substrate away from the first substrate, and the bending portion of the extending portion, the display device and the second substrate form a buffer cavity.
Optionally, a plurality of grooves are formed on the bending part.
Optionally, the buffer cavity is filled with a buffer material.
Optionally, the buffer material comprises: at least one of UV glue, acrylic and polyvinyl chloride.
Optionally, the extension part is bonded to a surface of the second substrate facing away from the first substrate.
According to a second aspect, an embodiment of the present invention provides a display device, including: the display panel according to any one of the first to third aspects.
According to a third aspect, an embodiment of the present invention provides a display panel packaging method, the display panel including: the display device includes a first substrate, a display device, and a second substrate that are sequentially stacked, the method including: forming an extension part on the first substrate, wherein the extension part exceeds the orthographic projection area of the second substrate on the first substrate; and bending the extension part towards the second substrate to form a buffer structure.
Optionally, bending the extension portion toward the second substrate, so that the extension portion, the display device and the second substrate form a buffer cavity; the buffer cavity is filled with a buffer material.
Optionally, before the bending the extending portion toward the second substrate to form a buffer structure, the method further includes: the part to be bent of the extending part is provided with a plurality of grooves.
In the display panel, the manufacturing method thereof and the display device provided by the embodiment of the invention, in the first substrate, the display device and the second substrate which are sequentially stacked, the first substrate is provided with the extension part, wherein the extension part is a part of the first substrate, which exceeds the orthographic projection of the second substrate on the first substrate, and the extension part is bent towards the second substrate to form the buffer structure. The edge of the display panel is encapsulated by the buffer structure formed by bending the extension part, water, oxygen and pollutants are prevented from entering the display panel, the buffer structure is bent to form the edge of the display panel through the extension part on the first substrate, the edge of the display panel can be protected, and the buffer structure is used for resisting the impact on the edge when a product falls, dispersing stress and improving the falling reliability of the product made of the display panel.
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 description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 shows a schematic structural diagram of a display panel according to an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating a method of fabricating a display panel according to an embodiment of the invention;
fig. 3-8 are schematic diagrams illustrating a manufacturing process of a display panel according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. 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 this embodiment, a display panel is provided, which may be an organic light emitting display panel, and specifically, in this embodiment, the display panel may be an AMOLED display panel, a PMOLED display panel, or a WOLED display panel.
As shown in fig. 1, the display panel includes: a first substrate 1, a display device 2, and a second substrate 3 stacked in this order; the first substrate 1 is provided with an extension part 9, and the extension part 9 is a part of the first substrate 1 exceeding the orthographic projection of the second substrate 3 on the first substrate 1; the extension portion 9 is bent toward the second substrate 3 to form the buffer structure 4. In this embodiment, the first substrate 1 and the second substrate 3 may be flexible substrates, specifically, the first substrate 1 may be a flexible substrate of a display panel, and the second substrate 3 may be an encapsulation layer of the display panel. In this embodiment, the first substrate 1 may be taken as a flexible substrate, the second substrate 3 may be taken as an example of an encapsulation layer, the display panels are usually manufactured by using a jigsaw method during manufacturing, a dummy region is reserved between each two adjacent display panels, the dummy region is an area between two adjacent display panels where the display device 2 is not disposed, and is used for isolating each two adjacent display panels, when the display panels are manufactured, the spliced display panels need to be cut, when the display panels are cut, the second substrate 3 may be cut along the edge of the display device 2 or the size required by the display panels, at least a part of the dummy region of the first substrate 1 may be reserved as the extension portion 9, and the extension portion 9 is bent toward the second substrate 3. Specifically, the extension part 9 can be bent towards the second substrate 3 to deviate from the surface of the first substrate 1, part of the extension part 9 is overlapped on the second substrate 3 and surrounds the side surfaces of the display device 2 and the second substrate 3 to form the buffer structure 4, the buffer structure 4 is formed by bending the extension part 9 to encapsulate the edge of the display panel through the buffer structure 4 formed by bending the extension part 9, so that water, oxygen and pollutants are prevented from entering the inside of the display panel, moreover, the buffer structure 4 is formed by bending the extension part 9 on the first substrate 1 to the edge of the display panel, the edge of the display panel can be protected, the buffer structure 4 is used for resisting the impact on the edge when the product falls, stress is dispersed, and accordingly, the falling reliability of the product made of the display panel is improved.
In order to further increase the stress dispersion capability of the buffer structure 4, as shown in fig. 1, in an alternative embodiment, the extending portion 9 is bent to a surface of the second substrate 3 facing away from the first substrate 1, and the bent portion of the extending portion 9, the display device 2 and the second substrate 3 form a buffer cavity 5. In this embodiment, the substrate may be a flexible substrate, the extending portion is bent to form a buffer cavity 5 with the display device 2 and the second substrate 3, in this embodiment, an outer portion of the extending portion 9 is used as a connecting portion, and is overlapped with an upper surface of the second substrate 3 after being bent, a bent portion is a portion of the extending portion 9, and the bent portion, the second substrate 3 and a side surface of the display device 2 form a buffer cavity. Because the first substrate 1 is a flexible substrate and the buffer cavity 5 is also a flexible buffer cavity 5, the flexible buffer cavity 5 formed at the edge of the display panel can well disperse and resist the impact and stress on the edge when the product falls.
To further increase the stress-dispersing ability of the buffer structure 4, as shown in fig. 1, in an alternative embodiment, the buffer cavity 5 may be further filled with a buffer material 6. The specific buffer material 6 may include, but is not limited to, at least one of UV glue, acryl, and polyvinyl chloride. In this embodiment, the buffer material is not limited to the above, and other flexible materials capable of satisfying stress dispersion and matching with the display panel may be applied to this embodiment.
In order to reduce the bending stress of the extending portion when being bent, and prevent the extending portion from being broken when being bent, or from being over-fatigued when being bent, as shown in fig. 1, in an optional embodiment, a part of the material of the first substrate 1 is removed from the bent portion to form a plurality of grooves, in this embodiment, the grooves may be formed on an inner wall of a buffer cavity surrounded by the bent portion, the display device 2, and the second substrate 3, and may be formed on an outer wall of the buffer cavity, specifically, the number of the grooves may be one or more, and in this embodiment, no specific limitation is made. In this embodiment, the opening direction of the groove may be any direction, for example, the groove may be formed along the long side direction of the extending portion 9 or the bending portion, may be formed along the short side direction of the extending portion 9 or the bending portion, and may form an included angle of 0 ° to 90 ° with the long side direction or the short side direction of the extending portion 9 or the bending portion. The removal of the material of the bending portion can release part of the stress when the extension region is bent, prevent the extension region from being broken when bent, and prolong the service life of the buffer structure 4.
In an alternative embodiment, the folded extension may be bonded by an adhesive 7, as shown in fig. 1, to connect the extension to another. The specific adhesive 7 may be UV glue, and through ultraviolet curing, the extension region may be firmly adhered to the other substrate, so as to form the buffer structure 4 to improve the reliability of the buffer structure 4. In this embodiment, the specific adhesive is not limited, and any adhesive that can achieve reliable substrate adhesion is suitable for this embodiment.
In a specific embodiment, the first substrate 1 may be a display panel substrate, the second substrate 3 may be a non-display panel substrate, the extending region of the first substrate 1 is bent and adhered to the second substrate 3 by an adhesive 7 such as UV glue, etc., to form a buffer cavity 5, the buffer cavity 5 is filled with a buffer material, and the buffer cavity 5 and the buffer material absorb the impact on the edge when the product falls, so as to disperse the stress, thereby improving the falling reliability of the product. And the non-display surface can be prevented from influencing the light emergent area of the display surface, and the screen occupation ratio of the display surface is improved.
The embodiment of the invention also provides a manufacturing method of the display panel, and the display panel comprises the following steps: the first substrate 1, the display device 2, and the second substrate 3 are sequentially stacked, as shown in fig. 2, and the method may include the steps of:
and S10, forming an extension part which exceeds the orthographic projection area of the second substrate on the first substrate. In this embodiment, the extension portion 9 exceeds the orthographic projection area of the first substrate 1 of the second substrate 3, specifically, the display panels can be manufactured by a jigsaw method in the manufacturing process, a dummy area is reserved between the display panels, the dummy area is an area between adjacent display panels where the display device 2 is not disposed, and is used for isolating the display panels, when the display panels are manufactured, the spliced display panels need to be cut, when the display panels are cut, the second substrate 3 can be cut along the edge of the display device 2 or the required size of the display panel, and at least a part of the dummy area of the first substrate 1 can be reserved as the extension portion 9. As another alternative embodiment, the extension portion 9 may also be made by growing, specifically, the extension portion 9 beyond the orthographic projection of the second substrate 3 on the first substrate 1 may be grown on the periphery of the first substrate 1, and specifically, the extension portion may be formed by coating, sputtering or evaporation.
S20, bending the extending part towards the second substrate to form a buffer structure. In a specific embodiment, an outer portion of the extending portion 9 serves as a connecting portion, and is overlapped with the upper surface of the second substrate 3 after being bent, a bent portion of the extending portion 9 is a bent portion, and the bent portion, the second substrate 3 and the side surface of the display device 2 define a buffer cavity. The edge of the display panel is encapsulated by the buffer structure 4 formed by bending the extension part 9, water, oxygen and pollutants are prevented from entering the display panel, and the buffer structure 4 is formed at the edge of the display panel by bending the extension part 9 on the first substrate 1, so that the edge of the display panel can be protected, the product is prevented from falling, the impact on the edge is reduced, the stress is dispersed, and the falling reliability of the product made of the display panel is improved.
To further increase the stress-dispersing ability of the buffer structure 4, in an alternative embodiment, as shown in fig. 3, the step of bending the remaining extension regions into the buffer structure 4 in step S20 may further include:
the extending portion 9 is bent toward the second substrate 3, so that the extending portion 9 forms a buffer cavity with the display device 2 and the second substrate 3. To further increase the stress-dispersing ability of the buffer structure 4, in an alternative embodiment, a buffer material may be filled in the buffer cavity.
In order to reduce the stress when the extension region is bent, prevent the extension region from breaking when bent, or prevent the extension region from over-fatigue when the extension region is kept in a bent state, in an alternative embodiment, a part of the material of the bent portion of the extension region may be removed to form a plurality of grooves. The groove can release partial stress when the extension area is bent, so that the extension area is prevented from being broken when bent, and the service life of the buffer structure is prolonged. In this embodiment, the laser cutting may be performed, or may be performed by etching, for example, at least one of photolithography, wet etching, and dry etching.
Referring to fig. 3-8, a method for manufacturing a display panel is specifically described, as shown in fig. 3, the display panel is a tile structure, and a tile needs to be cut, and a single cut display panel 10 is encapsulated. When the first substrate 1 is cut, as shown in fig. 5, the dummy region 11 may be cut from the middle of the dummy region 11 between the display panels 10 along a first cutting line B, and the dummy region 11 of the first substrate 1 may be left. In cutting the second substrate 3, as shown in fig. 4, the dummy area of the second substrate 3 may be cut along the second cutting line a or cut to a size required for the display panel. The cut individual display panel 10 can be specifically referred to fig. 6. Grooves 8 are formed in the remaining dummy regions 11, i.e. in the extension portions 9 of the first substrate 1, in particular, by photolithography, laser cutting, and the like, as shown in fig. 7. Bending the extension part 9, overlapping the connecting part of the extension part 9 with the upper surface of the second substrate 3, and setting the adhesive 7 at the overlapping position, wherein the adhesive can adopt UV glue, and the extension part 9 can be firmly adhered to the second substrate 3 through ultraviolet irradiation, as shown in fig. 8. A buffer cavity 5 enclosed by the bending part, the second substrate 3 and the display is filled with a flexible filler, i.e. a buffer material 6, and the filled effect can be seen in fig. 1.
The embodiment of the invention also provides electronic equipment, which is provided with a display screen, wherein the display screen adopts the display panel described in the embodiment, and the electronic equipment can comprise a mobile phone, a computer, a television, a tablet computer and the like.
Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.
Claims (7)
1. A display panel, comprising: the display device comprises a first substrate, a display device and a second substrate which are sequentially stacked;
the first substrate is provided with an extension part, and the extension part is a part of the first substrate, which exceeds the orthographic projection of the second substrate on the first substrate;
the extension part is bent towards the second substrate and the display device to form a buffer structure;
the extension part is bent to one surface of the second substrate, which is far away from the first substrate, the bent part of the extension part, the display device and the second substrate form a buffer cavity, and the buffer cavity is filled with buffer materials.
2. The display panel of claim 1, wherein the bending portion has a plurality of grooves.
3. The display panel of claim 1, wherein the buffer material comprises: at least one of UV glue, acrylic and polyvinyl chloride.
4. The display panel of claim 1, wherein the extension is bonded to a side of the second substrate facing away from the first substrate.
5. A display device, comprising: the display panel of any one of claims 1-4.
6. A method for manufacturing a display panel, the display panel comprising: the display device includes a first substrate, a display device, and a second substrate that are sequentially stacked, the method including:
forming an extension part on the first substrate, wherein the extension part exceeds the orthographic projection area of the second substrate on the first substrate;
bending the extension part towards the second substrate and the display device to form a buffer structure;
wherein bending the extension portion toward the second substrate and the display device to form a buffer structure further comprises: bending the extension part towards the second substrate so that the extension part, the display device and the second substrate form a buffer cavity; the buffer cavity is filled with a buffer material.
7. The method for manufacturing a display panel according to claim 6, wherein before bending the extension portion toward the second substrate to form a buffer structure, the method comprises: the part to be bent of the extending part is provided with a plurality of grooves.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910319091.8A CN110165072B (en) | 2019-04-19 | 2019-04-19 | Display panel, manufacturing method thereof and display device |
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| CN201910319091.8A CN110165072B (en) | 2019-04-19 | 2019-04-19 | Display panel, manufacturing method thereof and display device |
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| CN110165072B true CN110165072B (en) | 2022-02-15 |
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| CN112150929A (en) * | 2020-09-27 | 2020-12-29 | 武汉华星光电半导体显示技术有限公司 | Backboard and display device |
| CN113077721B (en) * | 2021-04-16 | 2022-08-05 | 合肥维信诺科技有限公司 | Display panel, manufacturing method thereof and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109560088B (en) * | 2018-12-19 | 2021-06-22 | 武汉华星光电半导体显示技术有限公司 | Flexible display substrate and manufacturing method thereof |
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| CN105932174A (en) * | 2016-06-27 | 2016-09-07 | 武汉华星光电技术有限公司 | Oled packaging structure |
| CN106711183A (en) * | 2017-02-16 | 2017-05-24 | 京东方科技集团股份有限公司 | Flexible OLED (Organic Light Emitting Diode) display panel and display device |
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