CN111627332A - Display substrate, display panel and display panel manufacturing method - Google Patents
Display substrate, display panel and display panel manufacturing method Download PDFInfo
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- CN111627332A CN111627332A CN202010430941.4A CN202010430941A CN111627332A CN 111627332 A CN111627332 A CN 111627332A CN 202010430941 A CN202010430941 A CN 202010430941A CN 111627332 A CN111627332 A CN 111627332A
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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
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133305—Flexible substrates, e.g. plastics, organic film
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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 a display substrate, a display panel and a display panel manufacturing method, wherein the display substrate comprises a front display area and a side display area arranged at the edge of the front display area, the side display area comprises a side area and a corner area, and the corner area is positioned in a junction area of two adjacent side areas; the corner region is provided with a plurality of openings for mitigating shrinkage of the corner region. Through the structural design, the shrinkage performance of the corner area of the display substrate is improved, the risk of wrinkles generated in the process of attaching the display substrate and the glass cover plate is reduced, and the appearance quality and the display quality of the display panel are improved.
Description
Technical Field
The present disclosure relates to the field of display technologies, and in particular, to a display substrate, a display panel and a method for manufacturing the display panel.
Background
As the application field of display devices has expanded, display devices have been not limited to the demand for flat panel displays. Device designs requiring multi-faceted displays have emerged, such as the hyperboloid and quad-curved displays that have emerged in the market. In the manufacturing process of the multi-curved-surface display screen, the laminating technology of the display substrate and the multi-curved-surface glass cover plate can be involved, the display substrate applied to the multi-curved-surface display screen is flexible in curved surface area at least, and the laminating operation of the display substrate and the multi-curved-surface glass cover plate can enable the local area on the display substrate to be bent or even folded to a certain degree. In the corner area of the display substrate, the joint bending action from two directions can generate a large compressive force on the area, which causes the display substrate in the corner area to shrink excessively to generate wrinkles, and the wrinkles not only affect the beauty of the final product, but also easily cause the dead folding of the display area lines, and affect the display effect of the final product.
Disclosure of Invention
Based on the not enough among the above-mentioned prior art, this application is through improving display substrate corner district structure, add wherein and alleviate the opening to improve the shrink performance in display substrate corner district, solve display substrate and the problem that the fold appears in the many curved surfaces glass apron laminating in-process in the corner district.
The application provides a display substrate, which comprises a front display area and a side display area arranged at the edge of the front display area, wherein the side display area comprises a side area and a corner area, and the corner area is positioned in a cross connection area of two adjacent side areas;
the corner region is provided with a plurality of openings for mitigating shrinkage of the corner region.
According to an embodiment of the present application, the layered structure of the display substrate includes a substrate, a display function layer disposed on the substrate, and a package layer disposed on the display function layer, where the display function layer includes a plurality of display elements and a metal trace.
According to an embodiment of the present application, the opening is disposed on the substrate base plate corresponding to the corner region and penetrates through the substrate base plate.
According to an embodiment of the present application, the opening penetrates through the display function layer corresponding to the corner region, and is staggered from the display element and the metal trace.
According to an embodiment of the present application, the opening penetrates through the encapsulation layer corresponding to the corner region.
According to an embodiment of the application, the opening is a combined structure of an oval opening and a transverse groove-shaped opening, and two ends of the transverse groove-shaped opening are respectively connected with one oval opening.
According to an embodiment of the application, the opening is arranged in a direction parallel to an edge line of the corner region.
The application also provides a display panel, which comprises the display substrate and a multi-curved-surface glass cover plate attached to the display substrate;
the multi-curved-surface glass cover plate comprises a plane area and a curved surface area, wherein the plane area is attached to the front display area of the display substrate, and the curved surface area is attached to the side display area of the display substrate.
The present application further provides a method for manufacturing a display panel, which includes the following steps:
providing a display substrate, wherein the display substrate comprises a front display area and a side display area arranged at the edge of the front display area, the side display area comprises a side area and a corner area, and the corner area is positioned in a junction area of two adjacent side areas;
forming a plurality of openings in the corner regions of the display substrate;
and attaching the display substrate to a multi-curved-surface glass cover plate, wherein a front display area of the display substrate is attached to a plane area of the multi-curved-surface glass cover plate, and a side display area of the display substrate is attached to a curved surface area of the multi-curved-surface glass cover plate.
According to an embodiment of the application, the opening that forms is oval opening and horizontal slot form open-ended integrated configuration, the oval opening is connected one respectively at the both ends of horizontal slot form opening, just the opening along with the parallel direction in the marginal line in corner district sets up.
The beneficial effect of this application is: the application provides a display substrate, a display panel and a display panel manufacturing method, creatively designs a technical scheme that an opening for relieving shrinkage is arranged in a corner area of the display substrate, improves the shrinkage performance of the corner area of the display substrate, reduces the risk of generating wrinkles in the process of attaching the display substrate and a glass cover plate, and improves the appearance quality and the display quality of the display panel.
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 embodiments of the application, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a display substrate provided in an embodiment of the present application;
FIG. 2 is a partial structural diagram of a left upper corner region L of the display substrate shown in FIG. 1;
FIG. 3 is a partial structural diagram of a right upper corner region R of the display substrate shown in FIG. 1;
FIG. 4 is a cross-sectional view along A-A' of one embodiment of the display substrate shown in FIG. 1;
FIG. 5 is a cross-sectional view along A-A' of another embodiment of the display substrate shown in FIG. 1;
FIG. 6 is a cross-sectional view taken along A-A' of yet another embodiment of the display substrate shown in FIG. 1;
fig. 7 is a schematic structural view of a multi-curved glass cover plate according to an embodiment of the present application.
Detailed Description
The following description of the various embodiments refers to the accompanying drawings, which are included to illustrate specific embodiments that can be implemented by the application. Directional phrases used in this application, such as [ upper ], [ lower ], [ front ], [ rear ], [ left ], [ right ], [ inner ], [ outer ], [ side ], etc., refer only to the directions of the attached drawings. Accordingly, the directional terminology is used for purposes of illustration and understanding, and is in no way limiting. In the drawings, elements having similar structures are denoted by the same reference numerals.
The embodiment of the application provides a display substrate, display substrate's corner region is provided with the opening that is used for alleviating the shrink, sets up through above-mentioned opening and can improve the regional shrink performance in display substrate corner, and laminating in-process display substrate and many curved surfaces glass apron, the regional shrink in corner is concentrated on the opening part to prevent that the regional fold that appears in display substrate corner, promote display substrate's whole aesthetic feeling.
As shown in fig. 1 to fig. 3, fig. 1 is a schematic structural diagram of a display substrate 10 provided in an embodiment of the present application, fig. 2 is a schematic partial structural diagram of a left upper corner region L of the display substrate 10 shown in fig. 1, and fig. 3 is a schematic partial structural diagram of a right upper corner region R of the display substrate 10 shown in fig. 1. The display substrate 10 includes a front display area 11 and a side display area 12 disposed at an edge of the front display area 11, where the side display area 12 includes a side area 121 and a corner area 122, and the corner area 122 is located at a junction area of two adjacent side areas 121. It should be noted that at least the side display area 12 of the display substrate 10 described herein is a flexible display substrate to meet the requirement of bending the side of the display substrate in the multi-curved display panel. Since the front display area 11 does not need to be bent in an application, the front display area 11 may be a flexible display substrate or a non-flexible display substrate.
In addition, it should be noted that the display substrate 10 described in the present application may be an organic light emitting diode display substrate, or a liquid crystal display substrate, or another type of display substrate, and the core of the present application lies in the improvement of the structure of the display substrate, and the improvement is not limited to the type of the display substrate. Moreover, the front display area 11 and the side display area 12 of the display substrate 10 are integrated, and there is no connecting trace or space between the two, so that when displaying a picture, a complete pattern is presented together; the side regions 121 and the corner regions 122 of the side display regions 12 are also integrated, and there is no connecting trace or space between them, so that they collectively present an integrated pattern when displaying a picture.
Further, a plurality of openings 13 are disposed in the corner region 122 for alleviating the shrinkage of the corner region 122. It should be understood that, when the display substrate 10 described in the present application is applied to a multi-curved-surface display panel, the corner region 122 may be adjacent to two, the bending process of the side region 121 is subject to the extrusion force, so as to reduce the volume of the corner region 122, in this embodiment, the opening 13 is disposed in the corner region 122, so as to reserve the contraction space for the contraction of the corner region 122, so that the contraction of the corner region 122 is concentrated at the opening 13, thereby achieving the purpose of preventing the corner region 122 from being extruded and folded, and facilitating to improve the aesthetic feeling and the display quality of the multi-curved-surface display panel.
Optionally, the opening 13 is a combination structure of an oval opening 131 and a transverse slot-shaped opening 132, and two ends of the transverse slot-shaped opening 132 are respectively connected to one oval opening 131. Preferably, the major axis of the oval opening 131 is parallel to the edge line of the corner region 122, and the transverse slot-like opening 132 is parallel to the edge line of the corner region 122. It should be appreciated that the above arrangement can take advantage of the major axis dimension of the oval-shaped opening 131 and the linear dimension of the transverse slot-shaped opening 132 to optimize the shrinkage performance of the corner region 122 and to optimally alleviate wrinkles in the corner region 122.
Alternatively, the number of the openings 13 in each corner region 122 may be plural, and may be a multi-layer layout arranged side by side. Such as the three-layer opening arrangement of the corner region 122 shown in fig. 2 and 3, and the number of outer layer openings 13 is set to be greater than the number of inner layer openings 13 according to the difference in shrinkage of the outer and inner layers of the corner region 122. By the arrangement, the quantity and the layout of the openings in the corner region 122 can be ensured to be matched with the shrinkage, and the shrinkage performance of the corner region 122 is optimized.
Alternatively, the openings 13 are arranged in a direction parallel to the edge lines of the corner regions 122. Specifically, on the basis that the major axis direction of the elliptical opening 131 and the extending direction of the transverse groove-shaped opening 132 are parallel to the edge line direction of the corner region 122, the connecting angle between the elliptical opening 131 and the transverse groove-shaped opening 132 in each opening 13 is further adjusted so that the extending direction of the entire opening 13 is parallel to the extending direction of the edge line of the corner region 122. It should be understood that the above-mentioned structure can optimize the shrinkage performance and shrinkage area of the corner region 122, so that the display substrate 10 after final bending has a flat surface without wrinkles.
Reference is made to fig. 1, 4-6, wherein fig. 4-6 are cross-sectional views along a-a' of three different embodiments of the display substrate 10 shown in fig. 1, respectively. The display substrate 10 has a multi-layer structure, and according to the difference of the functions of each layer structure in the display substrate 10, the display substrate includes a substrate 101, a display function layer 102 disposed on the substrate 101, and an encapsulation layer 103 disposed on the display function layer 102, where the display function layer 102 includes a plurality of display elements 1021 and metal traces 1022.
Optionally, the substrate base plate 101 is a flexible base plate at least in the side display area 12, for example, a polyimide base plate, so as to meet the requirement of side bending. The base substrate 101 may be a hard substrate such as a glass substrate or a flexible substrate such as a polyimide substrate in the front display region 11.
Alternatively, the display function layer 102 may be a display layer including a plurality of organic light emitting diode display modules arranged in an array, and is an element combination in the display substrate 10 that performs a display function. The display function layer 102 at least includes the display element 1021 and the metal trace 1022, for example, the display element 1021 may be an organic light emitting diode display component, and the metal trace 1022 may be a signal line for providing a plurality of control signals for the display element 1021, or may be a thin film transistor switch element for controlling the function of the display element 1021. The display function layer 102 may further include an interlayer structure, such as an interlayer insulating layer, an interlayer planarization layer, or the like, for performing insulating and isolating functions.
Alternatively, the encapsulation layer 103 may be an organic encapsulation layer or an inorganic encapsulation layer, or an organic-inorganic combined encapsulation layer, and the encapsulation layer 103 is used to isolate the elements inside the display substrate 10 from the external environment.
According to an embodiment of the present application, as shown in fig. 1 and 4, the opening 13 is disposed on the substrate base plate 101 corresponding to the corner region 122 and penetrates through the substrate base plate 101. It should be understood that during the bending of the corner regions 122, the substrate base plate 101, acting as a support member for the display base plate 10, itself needs to take on a greater amount of shrinkage. In this embodiment, the openings 13 are formed in the substrate base 101 in the corner regions 122, so that the shrinkage performance of the substrate base 101 in this region can be increased, and the corner regions 122 can be prevented from being pressed to form wrinkles.
According to an embodiment of the present application, as shown in fig. 1 and fig. 5, the opening 13 is disposed in the corner region 122 and penetrates through the substrate base plate 101 and the display function layer 102, and the opening 13 is staggered from the display element 1021 and the metal trace 1022. It should be understood that, with the above-described structural arrangement, the metal traces 1022 and the display element 1021 are prevented from being crushed and folded to affect the display performance while the substrate base plate 101 and the display function layer 102 are prevented from being bent and wrinkled. Alternatively, the opening 13 in the base substrate 101 and the opening 13 in the display function layer 102 may be vertically disposed in a penetrating manner, or may be disposed in a staggered manner.
According to an embodiment of the present application, as shown in fig. 1 and fig. 6, the opening 13 is disposed in the corner region 122, and penetrates through the substrate base plate 101, the display function layer 102 and the encapsulation layer 103, and in the display function layer 102, the opening 13 is staggered from the display element 1021 and the metal trace 1022. It should be understood that, with the above-mentioned structural arrangement, while bending wrinkles of the substrate base plate 101, the display function layer 102 and the encapsulation layer 103 are prevented, the metal traces 1022 and the display element 1021 are prevented from being crushed and folded to affect the display performance, and meanwhile, by providing the opening 13 in each of the substrate base plate 101, the display function layer 102 and the encapsulation layer 103, the shrinkage performance of the corner region 122 can be optimized, and the region can be effectively prevented from being crushed and wrinkled. Alternatively, the openings 13 in the substrate base plate 101, the display function layer 102, and the encapsulation layer 103 may be vertically arranged, or may be arranged to be offset from each other.
To sum up, the display substrate that this application embodiment provided includes at positive display area and side display area, and wherein the side display area includes side district and corner district, through the regional opening that is used for alleviating the shrink that sets up in corner improves the regional shrink performance in display substrate corner, and is laminating in-process display substrate and multi-curved glass apron, the regional shrink in corner is concentrated on the opening part to prevent that the regional fold that appears in display substrate corner, promote display substrate's whole aesthetic feeling.
The embodiment of the present application further provides a display panel, which is shown in fig. 1 and fig. 7, and the display panel includes the display substrate 10 provided in the above embodiment, and a multi-curved glass cover plate 20 attached to the display substrate 10. The multi-curved-surface glass cover plate 20 comprises a plane area 21 and a curved surface area 22, wherein the plane area 21 is attached to the front display area 11 of the display substrate 10, and the curved surface area 22 is attached to the side display area 12 of the display substrate 10. It should be noted that the planar area 21 and the curved area 22 of the multi-curved glass cover plate 20 are located on different planes, the curved area 22 extends from the edge of the planar area 21 to the back side of the planar area 21, and an angle is formed between the planar area 21 and the curved area 22, and the angle may be in a range of 0 degree to 180 degrees.
The display substrate 10 is attached to the groove formed by the multi-curved-surface glass cover plate 20, in the attaching process, the side display area 12 of the display substrate 10 is bent along the same direction, the corner area 122 is contracted under the extrusion effect, and the opening 13 located in the corner area 122 bears most or even all of the contraction amount, so that the corner area 122 is prevented from being wrinkled.
To sum up, the display panel that this application embodiment provided has many curved surfaces and shows the function, and it has contained the display substrate that this application embodiment provided, utilizes the opening in display substrate corner district absorbs the shrinkage that the corner district produced because of the bending, has avoided the fold appears in the corner district, is favorable to promoting display panel's appearance quality and display quality.
The embodiment of the present application further provides a manufacturing method of a display panel, which is shown in fig. 1 to 7 and includes the following steps:
firstly, a display substrate 10 is provided, the display substrate 10 includes a front display area 11 and a side display area 12 disposed at an edge of the front display area 11, the side display area 12 includes a side area 121 and a corner area 122, and the corner area 122 is located at a junction area of two adjacent side areas 121. Wherein at least the side display region 12 is a flexible display substrate.
Then, a plurality of openings 13 are formed in the corner regions 122 of the display substrate 10. Wherein the shape structure and distribution characteristics of the openings 13 are the same as those of the openings 13 in the above-described embodiments of the present application.
Further, the formed opening 13 is a combined structure of an oval opening 131 and a transverse slot-shaped opening 132, two ends of the transverse slot-shaped opening 132 are respectively connected with one oval opening 131, and the opening 13 is arranged along a direction parallel to the edge line of the corner region 122. The corner regions 122 have an optimum amount of contractibility by the above arrangement.
And finally, attaching the display substrate 10 to a multi-curved-surface glass cover plate 20, wherein the front display area 11 of the display substrate 10 is attached to the planar area 21 of the multi-curved-surface glass cover plate 20, and the side display area 12 of the display substrate 10 is attached to the curved area 22 of the multi-curved-surface glass cover plate 20. The structural features of the multi-curved glass cover plate 20 are the same as those of the multi-curved glass cover plate provided in the above-described embodiment. Moreover, the display substrate 10 is attached to the groove formed by the multi-curved-surface glass cover plate 20, in the attaching process, the side display area 12 of the display substrate 10 is bent along the same direction, the corner area 122 is shrunk under the extrusion action, and the opening 13 located in the corner area 122 bears most or even all shrinkage, so that the corner area 122 is prevented from being wrinkled.
In summary, compared with the prior art, the display panel manufacturing method provided in this embodiment increases the operation of manufacturing the opening in the corner region of the display substrate, thereby increasing the shrinkage performance of the corner region of the display substrate, reducing the risk of wrinkles generated during the process of bonding the display substrate and the glass cover plate, and enabling the finally manufactured display panel to have better appearance quality and display quality.
It should be noted that, although the present application has been described with reference to specific examples, the above-mentioned examples are not intended to limit the present application, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application, so that the scope of the present application shall be limited by the appended claims.
Claims (10)
1. A display substrate is characterized by comprising a front display area and a side display area arranged at the edge of the front display area, wherein the side display area comprises a side area and a corner area, and the corner area is positioned in a junction area of two adjacent side areas;
the corner region is provided with a plurality of openings for mitigating shrinkage of the corner region.
2. The display substrate of claim 1, wherein the layered structure of the display substrate comprises a substrate base plate, a display function layer disposed on the substrate base plate, and an encapsulation layer disposed on the display function layer, and the display function layer comprises a plurality of display elements and metal traces.
3. The display substrate of claim 2, wherein the opening is disposed on the substrate corresponding to the corner region and penetrates through the substrate.
4. The display substrate of claim 3, wherein the opening extends through the display function layer corresponding to the corner region and is offset from the display element and the metal trace.
5. The display substrate of claim 4, wherein the opening extends through the encapsulation layer corresponding to the corner region.
6. The display substrate of claim 1, wherein the opening is a combination of an elliptical opening and a transverse slot-shaped opening, and two ends of the transverse slot-shaped opening are respectively connected with one elliptical opening.
7. The display substrate of claim 6, wherein the opening is disposed in a direction parallel to an edge line of the corner region.
8. A display panel comprising the display substrate of any one of claims 1-7 and a multi-curved glass cover plate attached to the display substrate;
the multi-curved-surface glass cover plate comprises a plane area and a curved surface area, wherein the plane area is attached to the front display area of the display substrate, and the curved surface area is attached to the side display area of the display substrate.
9. A manufacturing method of a display panel is characterized by comprising the following steps:
providing a display substrate, wherein the display substrate comprises a front display area and a side display area arranged at the edge of the front display area, the side display area comprises a side area and a corner area, and the corner area is positioned in a junction area of two adjacent side areas;
forming a plurality of openings in the corner regions of the display substrate;
and attaching the display substrate to a multi-curved-surface glass cover plate, wherein a front display area of the display substrate is attached to a plane area of the multi-curved-surface glass cover plate, and a side display area of the display substrate is attached to a curved surface area of the multi-curved-surface glass cover plate.
10. The method as claimed in claim 9, wherein the opening is a combination of an oval opening and a horizontal slot opening, two ends of the horizontal slot opening are respectively connected to the oval openings, and the openings are arranged in a direction parallel to the edge lines of the corner regions.
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| CN202010430941.4A CN111627332B (en) | 2020-05-20 | 2020-05-20 | Display substrate, display panel and display panel manufacturing method |
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| CN202010430941.4A CN111627332B (en) | 2020-05-20 | 2020-05-20 | Display substrate, display panel and display panel manufacturing method |
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| CN112164331A (en) * | 2020-10-14 | 2021-01-01 | 武汉华星光电半导体显示技术有限公司 | Multi-curved-surface display device |
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| CN115132086A (en) * | 2022-07-07 | 2022-09-30 | 武汉华星光电半导体显示技术有限公司 | Display screen, preparation method thereof and display device |
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| US12144232B2 (en) | 2021-08-02 | 2024-11-12 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Display panel and display device with improved shrinkage performance of curved regions |
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