CN110807991B - Cover plate and display device - Google Patents
Cover plate and display device Download PDFInfo
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- CN110807991B CN110807991B CN201911087272.9A CN201911087272A CN110807991B CN 110807991 B CN110807991 B CN 110807991B CN 201911087272 A CN201911087272 A CN 201911087272A CN 110807991 B CN110807991 B CN 110807991B
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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 application provides an apron and display device, apron have an at least district of buckling and an at least non-district of buckling, and non-buckling position is in one side of the district of buckling, and the district of buckling is provided with certain type layer, and the shaping layer is used for making the apron in the district of buckling to have the shape of predetermineeing, and the preparation material on shaping layer is photosensitive glue. Have good flexibility before solidifying through utilizing photosensitive glue to make the apron that has the bending zone laminate to display panel more easily, improve the apron and laminate to display panel's yield, and through making the laminating become to predetermine the shape to display panel uncured photosensitive glue after, make the photosensitive glue solidification again, can make the apron of bending zone have fixed appearance.
Description
Technical Field
The application relates to the technical field of display, in particular to a cover plate and a display device.
Background
With the development of display devices, the appearance of the display devices is becoming more and more diversified. Among them, the cover plate is used as a protective layer of a display device, and the requirements of the outer shape thereof are diversified, and is not limited to the conventional flat type cover plate. The problem of low yield exists when the apron of traditional glass apron preparation with bending zone, and because traditional glass apron is rigid, the laminating yield of glass apron and display panel that has the bending zone is also low.
Therefore, it is necessary to provide a technical solution to make the cover plate have the bending region to meet the requirement of diversified shapes, and it is also necessary to improve the bonding yield between the cover plate having the bending region and the display panel.
Disclosure of Invention
An object of the present application is to provide a cover plate and a display device, which can improve the yield of the cover plate with a bending region and the display panel, so as to improve the yield of the display device.
In order to achieve the purpose, the technical scheme is as follows.
The utility model provides an apron, the apron has an at least district of buckling and an at least non-district of buckling, the non-district of buckling is located one side in the district of buckling, the district of buckling is provided with certain type layer, the design layer is used for making the district of buckling the apron has the shape of predetermineeing, the preparation material on design layer is photosensitive glue.
In the above-mentioned apron, the apron still including set up in the flexible substrate in bending area, bending area the design layer set up in the surface of flexible substrate.
In the above-mentioned apron, the apron still including set up in the hardcoat in bending region, the hardcoat set up in flexible substrate with between the design layer.
In the cover plate, the cover plate further includes a rigid base material disposed in the non-bending region, and the first side surface of the rigid base material, which is close to the flexible base material, is connected to the second side surface of the flexible base material, which is close to the rigid base material.
In the cover plate, the first side surface is provided with a first microstructure, the second side surface is provided with a second microstructure matched with the first microstructure, and a colloid layer is arranged between the first microstructure and the second microstructure to connect the rigid base material and the flexible base material.
In the above cover plate, the thickness of the rigid base material is equal to the sum of the thickness of the hard coat layer and the thickness of the flexible base material.
In the above cover plate, the thickness of the rigid base material is equal to the sum of the thickness of the hard coat layer and the thickness of the flexible base material.
In the cover plate, the preset shape is a U shape, a V shape, a right angle shape, an arc shape or an irregular shape.
In the above-described cover plate, the setting layer extends from the bent region to the non-bent region.
In the cover plate, the thickness of the sizing layer is 0.3 mm-0.5 mm.
A display device comprises the cover plate.
Has the advantages that: the application provides an apron and display device, apron have an at least district of buckling and an at least non-district of buckling, and non-buckling position is in one side of the district of buckling, and the district of buckling is provided with certain type layer, and the shaping layer is used for making the apron in the district of buckling to have the shape of predetermineeing, and the preparation material on shaping layer is photosensitive glue. Have good flexibility before solidifying through utilizing photosensitive glue to make the apron in the district of buckling laminate to display panel more easily, improve the apron and laminate to display panel's yield, and after for predetermineeing the shape through making uncured photosensitive glue design, make the photosensitive glue solidification again, when can adapt to the demand of the diversified appearance of apron, the apron in the district of buckling has fixed appearance.
Drawings
FIG. 1 is a schematic structural diagram of a display device according to a first embodiment of the present application;
FIG. 2 is a schematic structural diagram of a display device according to a second embodiment of the present application;
FIG. 3 is a schematic structural diagram of a display device according to a third embodiment of the present application;
FIG. 4 is a schematic structural diagram of a display device according to a fourth embodiment of the present application;
FIG. 5 is a schematic structural diagram of a display device according to a fifth embodiment of the present application;
fig. 6 is a schematic structural diagram of a display device according to a sixth embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. 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 application.
Please refer to fig. 1, which is a schematic structural diagram of a display device according to a first embodiment of the present application. The display device 100 includes a display panel 10 and a cover plate 20. The display panel 10 is a flexible organic light emitting diode display panel. The flexible organic light emitting diode display panel includes a flexible substrate and an organic light emitting diode array layer formed on the flexible substrate. The cover plate 20 is attached to the light emitting surface of the display panel 10 by a transparent optical adhesive (not shown).
The display device 100 has at least a first planar area 100a and at least a first bending area 100b, and the first planar area 100a is located at one side of the bending area 100 b. The first planar area 100a is used to display an image. The first bending region 100b may be a non-display region. The first bending area 100b may also be a display area and a non-display area, for example, a portion close to the first planar area 100a is the display area, and a portion far from the first planar area 100a is the non-display area. Specifically, the display device 100 has a first planar area 100a and first bending areas 100b located at two opposite sides of the first planar area 100 a. The first bending region 100b is U-shaped.
The area of the display panel 10 corresponding to the first planar area 100a is a display area, and the portion of the display panel 10 corresponding to the first planar area 100a is used for displaying images. The area of the display panel 10 corresponding to the first bending region 100b may be a non-display area, and the area of the display panel 10 corresponding to the first bending region 100b is not used for displaying images. The area of the display panel 10 corresponding to the first bending area 100b may be partially a display area and partially a non-display area, for example, a portion close to the display area of the display panel 10 is a display area, and a portion far from the display area of the display panel is a non-display area. The portion of the display panel 10 corresponding to the first bending region 100b is U-shaped.
The cover plate 20 has at least one bending region 20a and at least one non-bending region 20 b. The non-bending region 20b is located at one side of the bending region 20 a. The bending regions 20a are disposed in one-to-one correspondence with the first bending regions 100b of the display device 100. The non-bending regions 20b correspond to the first planar regions 100a of the display device 100 one to one. Specifically, the cover plate 20 has a non-bending region 20b and bending regions 20a located at two opposite sides of the non-bending region 20b, and the bending regions 20a are U-shaped, i.e., the cover plate 20 is a double-U-shaped cover plate.
The bending region 20a is provided with a shaping layer 201, and the shaping layer 201 is used for making the cover plate of the bending region 20a have a preset shape. The setting layer 201 is made of photosensitive glue. The main component of the photosensitive adhesive is photosensitive resin, the photosensitive adhesive has good flexibility before being cured, the photosensitive adhesive is cured after receiving light with specific wavelength, and the cured photosensitive adhesive has good mechanical strength. The photosensitive adhesive comprises acrylic photosensitive resin or polyester resin containing active double bonds. The positioning layer 201 is a transparent layer.
This application utilizes photosensitive gluey good flexibility that has before the solidification, and photosensitive gluey good flexibility makes the apron laminate to display panel and can be suitable for and turn into plane laminating technology with 3D laminating technology to make the apron that has the district of buckling laminate to display panel more easily. The flexibility before the photosensitive adhesive is not solidified makes the bubble between apron and the display panel of bending zone extruded along with laminating roller motion when laminating, can not exist because the unable stress concentration problem and the bubble that discharges and lead to of bubble mix with the problem among the laminating process, has solved traditional glass apron because the flexibility poor leads to the unable discharge of bubble between apron and the display panel to lead to the problem that the rete among the display panel produces the crackle or peels off because of stress concentration. After the uncured photosensitive adhesive is attached to the display panel, the photosensitive adhesive is crosslinked and cured through illumination to form a preset shape, the cover plate of the bending area is shaped, and the cured photosensitive adhesive has good mechanical performance. Because the cover plate in the bending area is shaped by illumination, the cover plate in the bending area can be matched with the cover plate with any arc or arc angle, and the appearance of the cover plate can meet diversified requirements.
It should be noted that, it is different so that the apron kink district has the nature of buckling to adopt flexible material with the kink district of apron, this application needs the apron to have good flexibility in order to improve the apron and laminate to display panel's yield when laminating to display panel, after the apron laminates to display panel, need make the apron keep fixed appearance, traditional glass apron and flexible material do not have this kind of characteristic, and this application sets up photosensitive glue in the kink district and can solve above-mentioned problem with regard as the design layer.
The cover plate 20 further includes a flexible substrate 202 disposed in the bending region 20a, and the shaping layer 201 of the bending region 20a is disposed on a surface of the flexible substrate 202. The flexible substrate 202 is a transparent polyimide layer. The flexible substrate 202 serves as a flexible carrier of the bending region 20a, and on the other hand, the cover plate 20 of the bending region 20a has good flexibility, which is beneficial to improving the yield rate when the cover plate 20 is attached to the display panel 10.
The cover plate 20 further includes a rigid substrate 203 disposed in the non-bending region 20b, and a first side of the rigid substrate 203 near the flexible substrate 202 is connected to a second side of the flexible substrate 202 near the rigid substrate 203. The rigid substrate 203 is a glass substrate. The first side surface is provided with a first microstructure 2031, the second side surface is provided with a second microstructure 2021 matched with the first microstructure 2031, and a colloid layer is arranged between the first microstructure 2031 and the second microstructure 2021 to connect the rigid substrate 203 and the flexible substrate 202. The first microstructure 2031 can be a protrusion and the second microstructure 2021 can be a groove. The first microstructure 2031 can also be a groove, and the second microstructure 2021 can also be a protrusion. The cross section of the projections or the grooves can be in a sawtooth shape, a spherical shape or an irregular pattern. By arranging the first microstructure 2031 on the first side surface and arranging the second microstructure 2021 on the second side surface, and connecting the first side surface and the second side surface through the colloid layer, the coating space of the colloid layer is larger, which is more beneficial to improving the bonding force between the first microstructure 2031 and the second microstructure, and the flexible substrate 202 is prevented from being separated from the rigid substrate 203 under the action of tensile stress when being bent.
The thickness of the flexible substrate 202 may be less than or equal to the thickness of the rigid substrate 203. When the thickness of the flexible substrate 202 is smaller than that of the rigid substrate 203, the thickness difference between the two can be filled by using the setting layer 201.
The shaping layer 201 extends from the bending region 20a to the non-bending region 20b, and the shaping layer 201 in the non-bending region 20b serves to protect the rigid substrate 203 and simultaneously prevent separation between the flexible substrate 202 and the rigid substrate 203. The thickness of the setting layer 201 is 0.3 mm-0.5 mm. The thickness of sizing layer 201 is less than 0.3 millimeter and leads to sizing layer 201 flexibility to increase, and the apron that is unfavorable for bending zone 20a has fixed shape, and sizing layer 201's thickness is greater than 0.5 millimeter, is unfavorable for the thinization of apron 20.
Please refer to fig. 2, which is a schematic structural diagram of a display device according to a second embodiment of the present application. The display device shown in fig. 2 is substantially similar to the display device shown in fig. 1, except that the cover plate 20 further includes a hard coating layer 204 disposed at the bending region 20a, and the hard coating layer 204 is disposed between the flexible substrate 202 and the setting layer 201.
The hard coating 204 is used to make the cover plate 20 of the bending region 20a stiff and prevent the bending region 20a from structural collapse. The thickness of the hard coating 204 is 0.05 mm to 0.1 mm.
The thickness of the rigid substrate 203 is equal to the sum of the thickness of the hard coating 204 and the thickness of the flexible substrate 202, so that a break exists between the rigid substrate 203 and the hard coating 204, and when the photosensitive adhesive is filled on the surfaces of the hard coating 204 and the rigid substrate 203 through the same process, bubbles are prevented from existing in the broken part, and the performance of the cover plate 20 is prevented from being influenced by the bubbles.
The hard coating 204 includes a first hard coating and a second hard coating, the first hard coating being disposed between the second hard coating and the flexible substrate. The first hard coating is a polymethyl methacrylate layer. The second hard coat is a silicone-based hard coat including a silicone coating.
Referring to fig. 3 to 5, fig. 3 is a schematic structural diagram of a display device according to a third embodiment of the present application, fig. 4 is a schematic structural diagram of a display device according to a fourth embodiment of the present application, and fig. 5 is a schematic structural diagram of a display device according to a fifth embodiment. The display device shown in fig. 3-5 is substantially similar to the display device shown in fig. 2, except that the predetermined shape of the cover plate 20 of the bending region 20a shown in fig. 3 is a right-angled shape, the predetermined shape of the cover plate 20 of the bending region 20a shown in fig. 4 is an arc shape, and the predetermined shape of the cover plate 20 of the bending region 20a shown in fig. 5 is a V shape.
Therefore, the cover plate can have diversified and fixed preset shapes by taking the photosensitive adhesive as the shaping layer in the bending area. In addition, the good flexibility of the uncured photosensitive adhesive can be utilized, so that the cover plate 20 of the bending area 20a can be more easily attached to the display panel, and the yield of attaching the cover plate to the display panel is improved.
Please refer to fig. 6, which is a schematic structural diagram of a display device according to a sixth embodiment of the present application. The display device shown in fig. 6 is substantially similar to the display device shown in fig. 2, except that the shaping layer 201 includes a first shaping layer 2011 and a second shaping layer 2012, the first shaping layer 2011 is located on a side close to the rigid substrate 203 and the flexible substrate 202, the second shaping layer 2012 is located on a side far away from the rigid substrate 203 and the flexible substrate 202, and hardness of the first shaping layer 2011 is greater than hardness of the second shaping layer 2012, so that the first shaping layer 2011 has sufficient hardness to fix the cover plate 20 into a predetermined shape, thereby avoiding easy deformation of the cover plate 20 of the bending region 20a, and the second shaping layer 2012 has a certain hardness and simultaneously avoiding a large tensile stress of the cover plate 20 of the bending region 20a when the cover plate is in a bending state.
The above description of the embodiments is only for assisting understanding of the technical solutions and the core ideas thereof; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (8)
1. The cover plate is characterized in that the cover plate is provided with at least one bending area and at least one non-bending area, the non-bending area is positioned on one side of the bending area, the bending area is provided with a shaping layer, the shaping layer is used for enabling the cover plate in the bending area to have a preset shape, and a preparation material of the shaping layer is photosensitive adhesive; the cover plate comprises a flexible base material arranged in the bending area and a rigid base material arranged in the non-bending area, and the shaping layer of the bending area is arranged on the surface of the flexible base material; the design layer is followed the bending area extends to the non-bending area, the design layer includes first design layer and second design layer, first design layer is located and is close to rigid substrate with one side of flexible substrate, the second design layer is located and keeps away from rigid substrate with one side of flexible substrate, the hardness of first design layer is greater than the hardness on second design layer.
2. The decking of claim 1, further comprising a hard coating disposed in the buckle zone, the hard coating being disposed between the flexible substrate and the sizing layer.
3. The decking of claim 2, wherein the first side of the rigid substrate adjacent the flexible substrate is connected to the second side of the flexible substrate adjacent the rigid substrate.
4. The cover sheet of claim 3, wherein the first side is provided with a first microstructure, the second side is provided with a second microstructure cooperating with the first microstructure, and a colloidal layer is provided between the first microstructure and the second microstructure to connect the rigid substrate and the flexible substrate.
5. The decking of claim 3, wherein the thickness of the rigid substrate is equal to the sum of the thickness of the hard coating and the thickness of the flexible substrate.
6. The decking of claim 1, wherein the predetermined shape is U-shaped, V-shaped, right-angled, curved or irregular.
7. The decking of claim 1, wherein the sizing layer has a thickness in the range of 0.3 mm to 0.5 mm.
8. A display device, characterized in that the display device comprises a cover plate according to any one of claims 1-7.
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| CN201911087272.9A CN110807991B (en) | 2019-11-08 | 2019-11-08 | Cover plate and display device |
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| CN201911087272.9A CN110807991B (en) | 2019-11-08 | 2019-11-08 | Cover plate and display device |
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| CN110807991B true CN110807991B (en) | 2021-12-03 |
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| CN111415592B (en) * | 2020-04-29 | 2022-04-15 | 京东方科技集团股份有限公司 | Method for attaching flexible display panel and cover glass and display device |
| CN113936547B (en) * | 2020-06-29 | 2023-12-08 | 云谷（固安）科技有限公司 | Manufacturing method of display module, display module and display device |
| CN112017546B (en) * | 2020-09-21 | 2022-08-23 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN112396964A (en) * | 2020-11-17 | 2021-02-23 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
| CN113066370A (en) * | 2021-03-19 | 2021-07-02 | 武汉华星光电半导体显示技术有限公司 | Flexible display panel and display device |
| CN113129747B (en) * | 2021-04-06 | 2022-04-26 | 武汉华星光电技术有限公司 | Packaging cover plate and display device |
| CN113314031B (en) * | 2021-04-27 | 2023-01-03 | 广州国显科技有限公司 | Display panel and preparation method thereof |
| CN113990180B (en) * | 2021-11-08 | 2023-12-01 | 京东方科技集团股份有限公司 | Flexible cover plate, manufacturing method thereof and display panel |
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