CN108682307B - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN108682307B CN108682307B CN201810789396.0A CN201810789396A CN108682307B CN 108682307 B CN108682307 B CN 108682307B CN 201810789396 A CN201810789396 A CN 201810789396A CN 108682307 B CN108682307 B CN 108682307B
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- 238000005452 bending Methods 0.000 claims abstract description 125
- 230000007704 transition Effects 0.000 claims abstract description 48
- 239000010410 layer Substances 0.000 claims abstract description 43
- 239000011241 protective layer Substances 0.000 claims abstract description 26
- 230000008093 supporting effect Effects 0.000 claims abstract description 20
- 125000006850 spacer group Chemical group 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 239000010408 film Substances 0.000 description 25
- 230000003028 elevating effect Effects 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 2
- 230000000977 initiatory effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- -1 Polyethylene Terephthalate Polymers 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012536 packaging technology Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Abstract
The present invention relates to a display panel, comprising: the flexible screen body comprises a display area and a non-display area; the non-display area comprises a bending transition area, a bending area and an extension area which are sequentially arranged, the extension area is not coplanar with the display area, and the bending transition area is coplanar with the display area; the support layer is used for supporting the display area and the bending transition area of the flexible screen body on one side of the support layer, and supporting the extension area of the flexible screen body on one side of the support layer, which is far away from the display area; the protective layer is formed on the surface of the flexible screen body far away from the supporting layer, and the protective layer completely covers the bending area and at least partially covers the bending transition area. According to the display panel, the two sides of the initial bending position of the flexible screen body are non-display areas, so that the phenomenon of stress concentration of the bending starting position of the flexible screen body caused by different structures of the two side areas of the flexible screen body is effectively relieved, and the protection of the bending starting position of the flexible screen body is realized. The invention also relates to a display device.
Description
Technical Field
The present invention relates to the field of display, and in particular, to a display panel and a display device.
Background
With the development of information technology, display devices such as mobile phones have become an indispensable tool in life, and "full-screen" has also become a pursuit of more and more users. The full screen display device claimed in the industry is simply a display device with an ultra-high screen duty cycle. In order to achieve the full screen display effect, the flexible screen body is usually realized by adopting a method of bending a non-display area, namely: bending the non-display area of the flexible screen body to the back surface of the flexible screen body so as to reduce the width of the frame of the screen body and further improve the screen occupation ratio.
However, when the non-display area of the flexible screen body is bent, the stress concentration phenomenon is easily generated at the initial bending position of the flexible screen body, and serious crease marks may be generated, so that the screen body or the cable at the position is damaged and fails.
Disclosure of Invention
Based on this, it is necessary to provide a display panel that can effectively alleviate the stress concentration phenomenon at the initial bending position of the flexible screen body.
A display panel, comprising:
The flexible screen body comprises a display area and a non-display area; the non-display area comprises a bending transition area, a bending area and an extension area which are sequentially arranged, the bending transition area is connected with the bending area and the display area, the extension area is not coplanar with the display area, and the bending transition area is coplanar with the display area;
The support layer is used for supporting the display area and the bending transition area of the flexible screen body on one side of the support layer, and supporting the extension area of the flexible screen body on one side of the support layer, which is far away from the display area;
And the protective layer is formed on the surface of the flexible screen body, which is far away from the supporting layer, and completely covers the bending area and at least partially covers the bending transition area.
Above-mentioned display panel, the non-display area of flexible screen body is including locating the bending transition district between display area and the bending area, and the initial bending position of flexible screen body is bending area and bending transition district joint's position, and the initial bending position of flexible screen body deviates from the adjacent position of display area and non-display area promptly, and the both sides of initial bending position are non-display area, so effectively alleviateed the bending initiation position of flexible screen body because of the phenomenon of the stress concentration that its both sides regional difference leads to, realize the protection to the bending initiation position of flexible screen body.
In one embodiment, the metal traces in the inflection transition and inflection regions are provided with holes of circular or other shapes.
In one embodiment, the connection position of the bending transition area and the bending area of the flexible screen body is the bending initial position of the flexible screen body, and the distance between the side edge of the protective layer, which is close to the display area, and the bending initial position of the flexible screen body is greater than 0.5mm.
In one embodiment, the protective layer completely covers the inflection transition.
In one embodiment, the protective layer is a UV glue layer.
In one embodiment, the protective layer has a thickness of 0.05mm to 0.2mm.
In one embodiment, the width of the kink transition zone is 0mm to 2mm.
In one embodiment, the device further comprises a driving unit arranged in the extension area.
In one embodiment, the support layer includes a first support film disposed on the back of the display area and the bending transition area of the flexible screen body, and a second support film disposed on a surface of the extension area, which is close to one side of the display area.
In one embodiment, the support layer further comprises a spacer block disposed between the first support film and the second support film.
The invention also provides a display device.
A display device comprises a display panel provided by the invention.
The display device comprises the display panel provided by the invention, the non-display area of the flexible screen body comprises the bending transition area arranged between the display area and the bending area, the initial bending position of the flexible screen body is the joint position of the bending area and the bending transition area, namely, the initial bending position of the flexible screen body deviates from the adjacent position of the display area and the non-display area, and both sides of the initial bending position are non-display areas, so that the phenomenon of stress concentration of the bending initial position of the flexible screen body caused by different structures of the two side areas of the flexible screen body is effectively relieved, and the protection of the bending initial position of the flexible screen body is realized.
Drawings
Fig. 1 is a schematic cross-sectional view of a display panel according to an embodiment of the invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is considered to be "in contact with" another element, it may be directly in contact with the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1, a display panel 100 according to an embodiment of the invention includes a flexible screen, a supporting layer 130, and a protective layer 150.
Specifically, the flexible screen includes a display area 111 and a non-display area 113. The non-display region 113 includes a inflection transition region 1131, an inflection region 1133, and an extension region 1135, which are sequentially disposed. The inflection transition 1131 connects the inflection region 1133 and the display region 111, the extension region 1135 is not coplanar with the display region 111, and the inflection transition 1131 is coplanar with the display region 111. In other words, the extension region 1135 is located at a side of the inflection region 1133 away from the display region 111, and the display region 111, the inflection transition region 1131, the inflection region 1133 and the extension region 1135 are sequentially disposed.
Generally, a flexible screen includes a flexible substrate, which may be divided into a display area and a non-display area extending from the display area.
Specifically, a display layer may be integrated on a display region of the flexible substrate. The display layer may include a plurality of display parts for displaying images such that the display region of the flexible substrate forms the display region 111 of the flexible screen body, and may include various display parts such as thin film transistors, gate lines, data lines, capacitors, anodes, cathodes, organic light emitting layers, color filter films, and the like thereon. A polarizer 120 may also be disposed over the display layer to increase light transmission and reduce external light reflection of the display layer. The polarizer 120 is further provided with a flexible cover plate 140 for protecting the flexible screen.
An integrated circuit for realizing functions such as signal transmission and driving image display is arranged on the non-display area of the flexible substrate, so that a non-display area 113 of the flexible screen body is formed.
When the flexible screen body is bent, only the non-display area 113 of the flexible screen body is bent, and the polarizer, the touch sensitive layer, the flexible cover plate and the like arranged on the display layer do not need to be bent.
The display area 111 and the non-display area 113 of the flexible screen body are not improved, and structures commonly used in the art can be adopted. While the inflection-transition 1131 is a part of the non-display region 113, and has the same design as the structure of the adjacent inflection region 1133.
In this embodiment, the metal wires in the bending region 1133 of the flexible screen body are through holes to relieve bending stress generated when the bending region 1133 of the flexible screen body is bent. Preferably, the through holes are circular or diamond-shaped, etc. More preferably, the metal traces within the non-display area 113 of the flexible screen all take the same shape. In addition, the metal trace in the bending region 1133 of the flexible screen body may also have a straight line or a curved line.
It can be considered that the inflection transition 1131 and the inflection region 1133 together form a designed inflection region, and the inflection region 1133 is an actual inflection region when the non-display region 113 is inflection, i.e., the inflection transition 1131 is not inflection.
Generally, the bent region 1133 is curved. Preferably, the bending angle of the bending region 1133 after bending is 180 degrees, that is, the extending region 1135 is parallel to the display region 111, so that after the bending region 1133 bends, the extending region 1135 of the flexible screen body can be better supported and fixed, and meanwhile, the process implementation is convenient. In addition, the space occupied by the flexible screen body is effectively reduced.
One side of the support layer 130 supports the display region 111 and the bending transition region 1131 of the flexible screen, and one side of the support layer 130, which is far from the display region 111, supports the extension region 1135 of the flexible screen. In other words, the display area 111 and the bending transition area 1131 of the flexible screen body are disposed on the same side of the supporting layer 130, and the extension area 1135 of the flexible screen body is disposed on the other side of the supporting layer 130 away from the display area 111.
The supporting layer 130 is mainly used for fixedly supporting the flexible screen body, so as to prevent the bending region 1133 of the flexible screen body from being broken due to overlarge bending degree. The support layer 130 may include a multi-layered structure. Further, the supporting layer 130 may be a material having both hardness and elasticity. The supporting layer 130 can play a role in supporting the flexible screen body, and also play a role in damping vibration of the flexible screen body.
The protective layer 150 is formed on the surface of the flexible screen body remote from the support layer 130. The protection layer 150 completely covers the inflection region 1133 and at least partially covers the inflection transition region 1131.
The non-display area 113 of the flexible screen body comprises a bending transition area 1131 arranged between the display area 111 and the bending area 1133, the initial bending position of the flexible screen body is the joint position of the bending area 1133 and the bending transition area 1131, namely, the initial bending position of the flexible screen body deviates from the adjacent positions of the display area and the non-display area, and the two sides of the initial bending position are non-display areas, so that the phenomenon of stress concentration caused by different structures of the two side areas of the bending starting position of the flexible screen body is effectively relieved, and the protection of the bending starting position of the flexible screen body is realized.
In addition, the inflection region 1133 is not directly adjacent to the display region 111, effectively reducing the stress acting on the display region 111 when the inflection region 1133 is inflection.
In this embodiment, the distance B1 between the side edge of the protective layer 150 near the display area 111 and the initial bending position of the flexible screen body is greater than 0.5mm, so that the protective layer 150 can better relieve the bending stress of the initial bending position of the flexible screen body from the side of the initial bending position of the flexible screen body near the display area 111.
It will be appreciated that, to better relieve the bending stress at the end bending position of the flexible screen body, the distance B2 between the side edge of the protective layer 150 near the extension region 1135 and the end bending position is also greater than 0.5mm, and even the protective layer 150 may completely cover the extension region 1135.
In this embodiment, the protection layer 150 completely covers the inflection and transition region 1131. Of course, in other embodiments, the protection layer 150 may also partially cover the inflection transition 1131. In this way, the protection layer 150 can relieve the bending stress of the initial bending position of the flexible screen body without shielding the display area 111.
Of course, in other embodiments, there is no display area in the border of the display area 111 of the flexible screen. In this case, the protective layer 150 may also cover a portion of the display area 111, that is, at least a partial area of the display area 111 that is not displayed, thereby better protecting the display area 111 and the non-display area 113 of the flexible screen body from being adjacent.
In this embodiment, the protection layer 150 is a UV adhesive layer. Of course, in other embodiments, the protective layer 150 is not limited to UV glue, but may be a heat curable glue, or other kind of photo curable glue.
Further, in the present embodiment, the thickness of the protective layer 150 is 0.05mm to 0.2mm to satisfy the protection of the bending region of the conventional flexible screen body. Those skilled in the art can select a suitable thickness of the protective layer 150 according to the size, type, bending radius of the bending region of the flexible screen, and ability of the protective layer 150 to relieve stress.
Of course, when the protective layer 150 is made of a material other than UV gel, a person skilled in the art may also specifically determine the thickness of the protective layer 150 according to the flexibility thereof.
Typically, the flexible screen body is designed to have a bending zone width of 0mm to 2mm. Preferably, the width of the bending transition region 1131 is 0 to 2mm, and the corresponding display device can obtain a higher screen ratio while the initial bending position of the flexible screen body is deviated from the adjacent position of the display region 111 and the non-display region 113. Of course, the width of the inflection transition 1131 is less than the width of the designed inflection region of the flexible screen.
In this embodiment, the display panel 100 further includes a driving unit 170 disposed in the extension region 1135. Specifically, in the present embodiment, the driving unit is disposed on a surface of the extension region 1135 away from the supporting layer 130. That is, in this embodiment, the flexible screen body adopts COP (Chip On film Pi) packaging technology. Of course, the drive unit 170 may not be provided on the extension of the flexible screen in other embodiments, depending on design requirements.
Additionally, in other embodiments, flexible circuit boards may also be provided in the extension rows of the flexible screen.
In this embodiment, the support layer 130 includes a first support film 131 disposed on the back of the display area 111 and the bending transition area 1131 of the flexible screen body, and a second support film 133 disposed on one side surface of the extension area 1135, which is close to the display area 111.
It can be appreciated that, in order to prevent the first support film 131 and the second support film 133 from affecting the bending of the bending region 1133 of the flexible screen body, it is necessary to ensure that the bending region 1133 is avoided by the first support film 131 and the second support film 133 before and after bending.
Preferably, in order to better support the display area 111 and the bending transition area 1131 of the flexible screen body, the edge of the first support film 131 coincides with the initial bending position of the bent flexible screen body. Similarly, to better support the extension region 1135 of the flexible screen, the edge of the second support film 133 coincides with the bending position of the end of the bent flexible screen.
Preferably, in the present embodiment, the first support film 131 and the second support film 133 are both PET (Polyethylene Terephthalate ) films having a supporting effect. Preferably, the thickness of the first support film 131 and the second support film 133 is 0 to 0.2mm.
The extension region 1135 may be fixed to the second support film 133 by gluing or physical means.
Further, the support layer 130 further includes a spacer 135 disposed between the first support film 131 and the second support film 133. Generally, the height of the elevating block 135 perpendicular to the direction of the first support film 131 is 0.1mm to 1mm. Of course, the height of the elevating block 135 can be adjusted according to the width of the bending region 1133.
The spacer block 135 may be made of silica gel or the like. The elevating block 135 may have a certain elasticity and hardness. The spacer block 135 has a certain hardness to prevent the flexible screen from being deformed by pressing. The spacer block 135 has a certain elasticity to prevent the flexible screen from being damaged by local stress.
In this embodiment, the elevating block 135 is disposed avoiding the bending region 1133 of the flexible screen body. Of course, in another embodiment, the surface of the end of the raising block 135 near the bending region 1133 of the flexible screen body is matched with the shape of the bending region 1133 of the flexible screen body after bending, so that the surface of the bending region 1133 of the flexible screen body near the side of the raising block 135 is attached to the surface of the raising block 135, and thus has a certain supporting effect on the bending region 1133 of the flexible screen body, and is not easy to deform and damage.
Of course, in other embodiments, the distance between the display region 111 and the extension region 1135 may be ensured by increasing the thickness of the first support film 131 and the second support film 133, or by adding other support structures.
An embodiment of the present invention also provides a display device including the display panel 100. Of course, the display device also includes other components such as a housing. The present invention is not limited to the display device, and other components except the display panel 100 may be modified by conventional techniques in the art.
The display device comprises the display panel provided by the invention, the non-display area of the flexible screen body comprises the bending transition area arranged between the display area and the bending area, and the initial bending position of the flexible screen body is the joint position of the bending area and the bending transition area, namely, the initial bending position of the flexible screen body deviates from the adjacent position of the display area and the non-display area, so that the phenomenon of stress concentration of the bending starting position of the flexible screen body caused by different structures of the two side areas of the flexible screen body is effectively relieved, and the protection of the bending starting position of the flexible screen body is realized.
Above-mentioned display panel, the non-display area of flexible screen body is including locating the bending transition district between display area and the bending area, and the initial bending position of flexible screen body is the position that bending area and bending transition district link up, and the initial bending position of flexible screen body deviates from the adjacent position of display area and non-display area promptly, has effectively alleviateed the phenomenon that the initial position of buckling of flexible screen body leads to the stress concentration because of the regional difference in its both sides, realizes the protection to the initial position of buckling of flexible screen body.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (12)
1. A display panel, comprising:
The flexible screen body comprises a display area and a non-display area; the non-display area comprises a bending transition area, a bending area and an extension area which are sequentially arranged, the bending transition area is connected with the bending area and the display area, the extension area is not coplanar with the display area, and the bending transition area is coplanar with the display area; the frame of the display area is provided with a non-display area;
The support layer is used for supporting the display area and the bending transition area of the flexible screen body on one side of the support layer, and supporting the extension area of the flexible screen body on one side of the support layer, which is far away from the display area;
the protective layer is formed on the surface, far away from the supporting layer, of the flexible screen body, and completely covers the bending area and the bending transition area, and also covers at least part of the non-display area;
The joint position of the bending transition area and the bending area is the bending initial position of the flexible screen body, and the distance between the side edge of the protective layer, which is close to the display area, and the bending initial position of the flexible screen body is a first distance;
The joint position of the bending region and the extending region is the tail end bending position of the flexible screen body, and the distance between the side edge of the protective layer, which is close to the extending region, and the tail end bending position of the flexible screen body is a second distance; the second distance is greater than the first distance.
2. The display panel of claim 1, wherein the metal traces in the bend transition region and the bend region are provided with vias.
3. The display panel of claim 2, wherein the through holes are circular or diamond-shaped.
4. The display panel of claim 1, wherein the first distance is greater than 0.5mm.
5. The display panel of claim 4, wherein the protective layer completely covers the inflection-transition.
6. The display panel of claim 5, wherein the protective layer is a UV glue layer.
7. The display panel according to claim 6, wherein the thickness of the protective layer is 0.05mm to 0.2mm.
8. The display panel of claim 7, wherein the width of the inflection transition is no greater than 2mm.
9. The display panel of claim 8, further comprising a driving unit disposed in the extension region.
10. The display panel of claim 9, wherein the support layer comprises a first support film disposed on a back surface of the display region and the bending transition region of the flexible screen body, and a second support film disposed on a side surface of the extension region adjacent to the display region.
11. The display panel of claim 10, wherein the support layer further comprises a spacer provided between the first support film and the second support film.
12. A display device comprising the display panel according to any one of claims 1 to 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810789396.0A CN108682307B (en) | 2018-07-18 | Display panel and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810789396.0A CN108682307B (en) | 2018-07-18 | Display panel and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108682307A CN108682307A (en) | 2018-10-19 |
| CN108682307B true CN108682307B (en) | 2024-06-25 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207233319U (en) * | 2017-09-30 | 2018-04-13 | 上海和辉光电有限公司 | A kind of flexible display panels and display device |
| CN108010448A (en) * | 2017-12-20 | 2018-05-08 | 上海天马微电子有限公司 | A kind of flexible display and display device |
| CN208622354U (en) * | 2018-07-18 | 2019-03-19 | 昆山国显光电有限公司 | Display panel and display device |
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207233319U (en) * | 2017-09-30 | 2018-04-13 | 上海和辉光电有限公司 | A kind of flexible display panels and display device |
| CN108010448A (en) * | 2017-12-20 | 2018-05-08 | 上海天马微电子有限公司 | A kind of flexible display and display device |
| CN208622354U (en) * | 2018-07-18 | 2019-03-19 | 昆山国显光电有限公司 | Display panel and display device |
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Application publication date: 20181019 Assignee: YUNGU (GU'AN) TECHNOLOGY Co.,Ltd.|BAZHOU YUNGU ELECTRONIC TECHNOLOGY Co.,Ltd.|KUNSHAN NEW FLAT PANEL DISPLAY TECHNOLOGY CENTER Co.,Ltd. Assignor: KUNSHAN GO-VISIONOX OPTO-ELECTRONICS Co.,Ltd. Contract record no.: X2019990000156 Denomination of invention: Array base plate and display panel comprising same and display device and its repairing method License type: Common License Record date: 20191030 |
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