CN110782788B - Flexible display panel and display device - Google Patents
Flexible display panel and display device Download PDFInfo
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- CN110782788B CN110782788B CN201910971871.0A CN201910971871A CN110782788B CN 110782788 B CN110782788 B CN 110782788B CN 201910971871 A CN201910971871 A CN 201910971871A CN 110782788 B CN110782788 B CN 110782788B
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- flexible substrate
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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
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Abstract
The display panel comprises a flexible substrate, a first base plate and a buckle, the flexible substrate comprises a first extension area, a bending area and a second extension area, the buckle comprises a straight portion and a rotating portion, the edge of the first base plate extends out of the flexible substrate, the buckle is connected with the first base plate, the rotating portion of the buckle is rotatable, and the buckle is connected with and fixes the flexible substrate in the second extension area. The tensile stress that the buckle produced has stopped flexible display panel's resilience, fixes and prevents each rete fracture to flexible display panel, has improved display device's life.
Description
Technical Field
The present disclosure relates to the field of display technologies, and in particular, to a flexible display panel and a display device.
Background
With the continuous development of display technology, especially the rapid advance in the field of panel manufacturing, the kinds of displays on the market are more and more.
In the communication industry, the demands of product markets such as mobile phones, televisions, computers, digital cameras and the like are increasing, and various display devices are developing in the fields of bending, folding and the like. In manufacturing these flexible display panels, a bending process is inevitably performed in the manufacturing process. In the traditional bending production process, photosensitive glue, namely ultraviolet curing glue is usually adopted on a panel coating to protect a bending folding part, but the problems of unsatisfactory coating, weak bonding force after curing and the like exist when the curing glue is coated in the existing bending process. Particularly, after the two different substrates are bent, the bent parts and the areas where the two different substrates are connected have a large bending stress effect, and the bent parts and the substrates and the curing adhesive are torn and layered due to the stress, so that the performance of the flexible display panel is seriously affected, and the service life of the display panel is shortened.
In summary, in the bending process of the conventional flexible display panel, after the panel is bent, the curing glue is not tightly connected, the bent area and the connected substrate film layer are cracked under the action of stress, the stress on each part of the panel is unbalanced, the performance of the display panel is affected, and the service life of the display panel is reduced.
Disclosure of Invention
The invention provides a flexible display panel and a display device, and aims to solve the problems that after a panel is bent, especially when the bending radian is too large, curing glue is not tightly connected, and a bent area and a connected substrate film layer crack under the action of stress.
To solve the above technical problem, the technical solution provided by the embodiment of the present disclosure is as follows:
according to a first aspect of embodiments of the present disclosure, there is provided a flexible display panel including:
the flexible substrate comprises a first extension area, a bending area and a second extension area, wherein the first extension area and the second extension area are arranged oppositely, and the bending area is connected with the first extension area and the second extension area;
the first base plate is arranged on the flexible substrate, and the edge of the first base plate extends out of the flexible substrate; and
a buckle, the buckle with the first base plate is connected, the buckle includes straight portion and rotation portion, rotation portion is rotatable, the buckle is connected and is fixed in the second extension district the flexible substrate.
According to an embodiment of the present disclosure, the rotating portion includes a rotating shaft connecting the straight portion and the rotating portion.
According to an embodiment of the present disclosure, the elastic modulus of the rotating portion is greater than the elastic modulus of the straight portion.
According to an embodiment of the present disclosure, the display device further includes a thin film circuit layer disposed in the bending region.
According to an embodiment of the present disclosure, the printed circuit board further includes a curing glue layer disposed on an outer surface of the thin film circuit layer.
According to an embodiment of the present disclosure, the first substrate includes a rigid substrate or a flexible substrate.
According to an embodiment of the present disclosure, a length of the rotating portion is smaller than a width of the flexible substrate.
According to an embodiment of the present disclosure, the shape of the straight portion and the rotating portion includes a flat strip shape.
According to an embodiment of the present disclosure, the material of the flexible substrate comprises one or more of polyimide, polyetherimide.
According to a second aspect of the present disclosure, there is also provided a display device including the flexible display panel provided by the embodiment of the present disclosure.
In summary, the beneficial effects of the embodiment of the present disclosure are:
the flexible display panel comprises a flexible substrate, a first base plate and a buckle, two extension areas of the flexible substrate are connected through the buckle, the tensile stress generated by the buckle is offset with the bending stress generated by a bending part of the flexible substrate, the flexible display panel is protected, the risks of cracking and falling off among all film layers of the flexible display panel are prevented, and the service life of the flexible display panel is prolonged.
Drawings
In order to illustrate the embodiments or the technical solutions in the prior art more clearly, the drawings needed to be 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 only some of the disclosed embodiments, and that other drawings can be obtained by those skilled in the art without inventive effort.
Fig. 1 is a schematic structural diagram of a flexible display panel provided in an embodiment of the present disclosure when not bent;
FIG. 2 is a schematic view of a first substrate and a fastening structure according to an embodiment of the disclosure;
FIG. 3 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure when the display panel is bent and fixed;
FIG. 4 is a cross-sectional view of a display panel according to an embodiment of the present disclosure;
fig. 5 is a schematic view of a display device according to an embodiment of the disclosure.
Detailed Description
The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present disclosure. It is to be understood that the described embodiments are merely illustrative of some, but not all embodiments of the disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any inventive step, are intended to be within the scope of the present disclosure.
In an embodiment of the disclosure, as shown in fig. 1, fig. 1 is a schematic structural diagram of a display panel provided in an embodiment of the disclosure when the display panel is not bent. The display panel includes a flexible substrate 100, a thin film circuit layer 101, a chip on film 102, and a first substrate 106. The flexible substrate 100 includes a first extension region 103, a second extension region 105, and a bending region 104, wherein the bending region 104 connects the first extension region 103 and the second extension region 104.
The film circuit layer 101 is disposed on the flexible substrate 100, specifically disposed in the bending region 104 of the flexible substrate 100, the first substrate 106 is disposed in the first extending region 103 of the flexible substrate 100, the chip on film 102 is connected to the edge of the flexible substrate 100, and some devices such as a driving chip are also disposed on the chip on film 102.
In the width direction of the flexible substrate 100, the width of the first base plate 106 is greater than the width of the flexible substrate 100, that is, the edge of the first base plate 106 extends out of the flexible substrate 100. The embodiment of the present disclosure further includes a latch 107, and the latch 107 is connected to an edge region of the first substrate 106.
When the display panel of the embodiment of the disclosure is bent, the bending region 104 is bent, the flexible substrate 100 and the thin film circuit layer 101 in the bending region are bent together, and finally, the first extension region 103 is opposite to the second extension region 105.
The material of the flexible substrate 100 includes one or more of polyimide, polyetherimide.
Specifically, as shown in fig. 2, fig. 2 is a schematic structural diagram of a first substrate and a clip according to an embodiment of the disclosure. The structure in fig. 2 includes a first substrate 200 and a clip 201. Referring to fig. 1, the middle region 205 of the first substrate 200 is completely disposed on the flexible substrate 100, the two side edge regions 206 extend out of the flexible substrate 100, the buckle 201 is connected to the first substrate 200 at the edge regions 206, and the buckle 201 and the first substrate 200 can be bonded by a curing adhesive or the buckle 201 and the first substrate 200 are integrated.
The buckle 201 comprises a straight portion 204 and a rotating portion 203, and a rotating shaft 202 is further arranged in the rotating portion 203. The rotating part 203 can rotate by means of the rotating shaft 202, so that the buckle 201 has a locking and fixing function, and in order to ensure the buckling effect of the buckle 201, the straight part 204 and the rotating part 203 can be designed into a flat strip shape, so that the fitting area is large enough.
Preferably, as shown in fig. 3, fig. 3 is a schematic structural diagram of the display panel provided by the embodiment of the disclosure when the display panel is fixed by the bending process. In the embodiment of the present disclosure, the flexible display panel is fastened by a buckle in combination with the embodiment in fig. 1. The flexible display panel includes a flexible substrate 300, a backplane 301, a thin film circuit layer 302, a curing glue 303, and a flip chip film 304. The flexible substrate includes a first extension region 307, a bend region 308, and a second extension region 309. The flexible substrate 300 is arranged on the back plate 301, the back plate 301 plays a role in supporting and protecting the flexible substrate 300, the flexible substrate 300 comprises the curing adhesive 303 arranged on the outer surface of the thin film circuit layer 302, and when the flexible substrate is bent, the curing adhesive 303 in the bending area 308 plays a good role in protecting circuits on the thin film circuit layer 302, so that the circuits are prevented from being broken.
Specifically, the flexible display panel further includes a first substrate 310 and a clip 305 connected to an edge of the first substrate 310.
When the flexible display panel is bent, the bending area 308 is bent, when the first extending area 307 is opposite to the second extending area 309, because the buckle 305 is arranged in the outer area of the edge of the flexible substrate 300, the rotating parts at two sides of the buckle 305 are rotated through the rotating shaft 306, the rotating parts are bent and clamp the flexible substrate 300 in the second extending area 309, and after the clamping is completed, the rotating parts are tightly attached to the flexible substrate 300, so that the second extending area is fixed. In this way, the flexible substrate 300 is kept stable under the tensile stress of the buckle 305 without springback caused by the bending stress of the bending region 308, and even if the R angle at the bending region 308 is less than 0.3mm, the film at the bending region 308, especially at the edge region of the bending region 308, will not crack.
In order to secure the buckling effect of the buckle 305, the elastic modulus of the rotating portion is larger than that of the straight portion, so that the rotating portion is not deformed by the large bending stress when the bending stress is large. Therefore, the display panel can be kept stable, and the situation that all film layers are cracked due to stress is avoided.
The first substrate 310 includes a rigid substrate or a flexible substrate, and the first substrate 310 may be disposed only on a partial region of the first extension region 307, or the first substrate 310 completely covers the first extension region 307, which is specifically designed according to a specific product and a magnitude of a bending stress generated when bending.
Preferably, the first base plate 310 may be a structure integrally designed with the flexible substrate 300, and in this case, only a portion of the material needs to be protruded from the edge region of the flexible substrate 300 to ensure that the clip 305 can be connected therewith.
As shown in fig. 4, fig. 4 is a schematic cross-sectional view of a display panel according to an embodiment of the disclosure. In the embodiment of the disclosure, the flexible display panel is bent, and the buckle is used for clamping and fixing the flexible display panel. Display panel includes apron 400, touch-control layer 401, encapsulation rete 402, first base plate 403, flexible substrate 404, above-mentioned each rete sets gradually from bottom to top, wherein still include organic electroluminescent layer and thin film transistor layer, organic electroluminescent layer and thin film transistor layer set up between first base plate 403 and encapsulation rete 402, organic electroluminescent layer and thin film transistor layer have not been drawn in the structure sketch of fig. 4, encapsulation rete 402 is used for blockking impurity such as steam and enters into display panel in, all can laminate through the optical cement between each rete, still include buckle 405 simultaneously.
At this time, the second extension portion 407 is a partial region of the flexible substrate 404 after bending, and the second extension portion 407 and the flexible substrate 404 are an integral structure. The rotating portion 406 of the latch 405 is attached to the surface of the second extending portion 407, so as to generate a tensile stress on the second extending portion 407, and the tensile stress balances the bending stress, thereby maintaining the stability of the entire display panel. The rotating portions 406 on the two sides can be connected, and meanwhile, the length of the rotating portion 406 is smaller than the width of the flexible substrate 404, so that the rotating portion 406 can be completely attached to the second extending portion 407 after rotating.
In an embodiment of the present disclosure, a display device is further provided, as shown in fig. 5, fig. 5 is a schematic view of the display device provided in the embodiment of the present disclosure, and the display device 501 includes the flexible display panel 500 provided in the embodiment of the present disclosure, and the flexible display panel 500 is controlled by a snap, so that stress is balanced at each position, and cracking and other situations do not occur between film layers.
The flexible display panel and the display device provided by the embodiments of the present disclosure are described in detail above, and the description of the embodiments is only used to help understanding the technical solution and the core idea of the present disclosure; those of ordinary skill in the art will understand that: it is to be understood that modifications may be made to the arrangements described in the embodiments above, and such modifications or alterations may be made without departing from the spirit of the respective arrangements of the embodiments of the present disclosure.
Claims (9)
1. A flexible display panel, comprising:
the flexible substrate comprises a first extension area, a bending area and a second extension area, wherein the first extension area and the second extension area are arranged oppositely, and the bending area is connected with the first extension area and the second extension area;
the first base plate is arranged on the flexible substrate, and the edge of the first base plate extends out of the flexible substrate; and
a clasp coupled to the first base plate, the clasp including a straight portion and a rotating portion, the rotating portion being rotatable, the clasp coupling and securing the flexible substrate within the second extension region;
wherein, the rotation part includes the pivot, the pivot is connected straight portion with the rotation part.
2. The flexible display panel of claim 1, wherein the modulus of elasticity of the rotating portion is greater than the modulus of elasticity of the flat portion.
3. The flexible display panel of claim 1, further comprising a thin film circuit layer disposed at the bending region.
4. The flexible display panel of claim 3, further comprising a layer of cured glue disposed on an outer surface of the thin film wire layer.
5. The flexible display panel of claim 1, wherein the first substrate comprises a rigid substrate or a flexible substrate.
6. The flexible display panel of claim 1, wherein a length of the rotating portion is less than a width of the flexible substrate.
7. The flexible display panel of claim 1, wherein the flat portion and the rotating portion have shapes comprising flat strips.
8. The flexible display panel of claim 1, wherein the material of the flexible substrate comprises one or more of a polyimide, a polyetherimide.
9. A display device characterized by comprising the flexible display panel according to any one of claims 1 to 8.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910971871.0A CN110782788B (en) | 2019-10-14 | 2019-10-14 | Flexible display panel and display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910971871.0A CN110782788B (en) | 2019-10-14 | 2019-10-14 | Flexible display panel and display device |
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| CN110782788A CN110782788A (en) | 2020-02-11 |
| CN110782788B true CN110782788B (en) | 2021-09-03 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111459326B (en) * | 2020-03-30 | 2021-06-01 | 深圳市华星光电半导体显示技术有限公司 | Touch panel and touch display panel |
| CN111681543B (en) * | 2020-04-26 | 2022-10-25 | 京东方科技集团股份有限公司 | Display panel, preparation method thereof and display device |
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| KR102290479B1 (en) * | 2014-08-13 | 2021-08-18 | 삼성디스플레이 주식회사 | Display Device |
| CN105261712B (en) * | 2015-08-31 | 2017-07-25 | 上海和辉光电有限公司 | A kind of flexible OLED display panel |
| CN107195795B (en) * | 2017-06-07 | 2019-06-14 | 武汉天马微电子有限公司 | Foldable display panel and foldable display device |
| CN110164310B (en) * | 2019-05-27 | 2022-04-26 | 武汉华星光电半导体显示技术有限公司 | Flexible display panel and display device |
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| DE102012204853A1 (en) * | 2012-03-27 | 2013-10-02 | Siemens Aktiengesellschaft | Method for producing a thin film on a substrate |
| CN105118401A (en) * | 2015-10-12 | 2015-12-02 | 京东方科技集团股份有限公司 | Display device and display equipment |
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