CN114141143B - Display panel, preparation method thereof and mobile terminal - Google Patents
Display panel, preparation method thereof and mobile terminal Download PDFInfo
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- CN114141143B CN114141143B CN202111403544.9A CN202111403544A CN114141143B CN 114141143 B CN114141143 B CN 114141143B CN 202111403544 A CN202111403544 A CN 202111403544A CN 114141143 B CN114141143 B CN 114141143B
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- 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
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Abstract
The invention provides a display panel, a preparation method thereof and a mobile terminal, wherein the display panel comprises: the panel main body comprises a display area and a frame area, and the panel main body comprises metal wires arranged in the frame area; the circular polaroid is arranged on the panel main body; and the shutter structure layer is arranged between the panel main body and the circular polaroid and is positioned in the frame area and comprises a plurality of grating strip parts which are parallel to each other and are distributed at intervals. The shutter structure layer is arranged in the frame area, so that large-angle light rays reflected by the metal wires in the frame area can be effectively blocked, and the problem of bright lines in the frame area caused by the fact that the light rays leak out of the circular polaroid is avoided.
Description
Technical Field
The application relates to the technical field of display, in particular to a display panel, a preparation method thereof and a mobile terminal.
Background
With the increasing development of display technology, there is an increasing search for display effects, and in recent years, narrow-frame display has become one of the research hotspots in the display field.
Along with the narrower and narrower frame of display panel, the resolution is higher and higher, the wiring of display panel frame region is denser and denser, thus easily lead to the bright line to appear in frame region and form outward appearance unusual, in order to solve this outward appearance unusual, the usual improvement scheme is to widen the regional shielding ink, and this scheme can lead to laminating precision compression, or uses other retes to shelter from, thereby this scheme needs to increase the photomask and causes manufacturing cost's increase, and improvement effect is very limited. Therefore, there is a need to develop a new solution to the problem of bright lines in such a border area.
Disclosure of Invention
The invention provides a display panel, a preparation method thereof and a mobile terminal, which can effectively avoid the problem that bright lines appear in the frame area of the display panel.
To solve the above problems, in a first aspect, the present invention provides a display panel including:
the panel main body comprises a display area and a frame area, wherein metal wiring is arranged in the frame area;
the shutter structure layer is arranged on the frame area of the panel main body and comprises a plurality of grating strip parts which are parallel to each other and are distributed at intervals; and
the circular polaroid is arranged on the panel main body and the shutter structural layer.
In an embodiment of the present invention, an extension direction of the grating strip portion is the same as an extension direction of the metal trace.
In an embodiment of the present invention, the metal wires at least include a first metal wire extending along a first direction and a second metal wire extending along a second direction, and the grating strip portion includes a first grating strip portion extending along the first direction and a second grating strip portion extending along the second direction.
In the display panel provided by the embodiment of the invention, an included angle formed by the side wall of the grating strip part and the plane where the panel main body is located is more than or equal to 80 degrees.
In the display panel provided by the embodiment of the invention, the width of the grating strip part is smaller than the width of the metal wire, and/or the distance between two adjacent grating strip parts is smaller than the distance between two adjacent metal wires.
In the display panel provided by the embodiment of the invention, the width of the grating strip part is 10-30 micrometers, and the distance between two adjacent grating strip parts is 10-30 micrometers.
In one embodiment of the present invention, the grating strip portion is made of a transparent resin material.
The invention provides a preparation method of a display panel, which comprises the following steps:
s10, providing a panel main body, wherein the panel main body comprises a display area and a frame area, and metal wires are formed in the frame area;
s20, forming a shutter structure layer on a frame area of the panel main body, wherein the shutter structure layer comprises a plurality of grating strip parts which are parallel to each other and are distributed at intervals; and
s30, forming a circular polarizer on the panel main body and the grating strip part.
In the method for manufacturing a display panel provided by the embodiment of the invention, the step of forming the shutter structure layer includes: and patterning the transparent film layer on the panel main body to form a planarization layer and the shutter structure layer, wherein the shutter structure layer is formed on the planarization layer.
The beneficial effects are that: the invention provides a display panel, a preparation method thereof and a mobile terminal, wherein the display panel comprises: the panel main body comprises a display area and a frame area, and the panel main body comprises metal wires arranged in the frame area; the circular polaroid is arranged on the panel main body; and the shutter structure layer is arranged between the panel main body and the circular polaroid and is positioned in the frame area and comprises a plurality of grating strip parts which are parallel to each other and are distributed at intervals. The shutter structure layer is arranged in the frame area, so that large-angle light rays reflected by the metal wires in the frame area can be effectively blocked, and the problem of bright lines in the frame area caused by the fact that the light rays leak out of the circular polaroid is avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a circular polarizer for reducing reflection of ambient light in a display panel according to the prior art;
FIG. 2 is a schematic diagram of a display panel according to the present invention in which light leakage occurs in a circular polarizer;
fig. 3 is a schematic plan view of a display panel according to an embodiment of the present invention;
fig. 4 is a schematic cross-sectional structure of a display panel according to an embodiment of the present invention;
fig. 5 is a schematic plan view of a shutter structure layer of a display panel according to an embodiment of the present invention;
fig. 6 is an enlarged partial area schematic view of a display panel according to an embodiment of the present invention;
fig. 7 is a schematic cross-sectional structure of another display panel according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a text flow of a method for manufacturing a display panel according to an embodiment of the present invention;
fig. 9a to 9c are schematic structural word flow diagrams of a method for manufacturing a display panel according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In this application, the term "exemplary" is used to mean "serving as an example, instance, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is presented to enable any person skilled in the art to make and use the invention. In the following description, details are set forth for purposes of explanation. It will be apparent to one of ordinary skill in the art that the present invention may be practiced without these specific details. In other instances, well-known structures and processes have not been described in detail so as not to obscure the description of the invention with unnecessary detail. Thus, the present invention is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.
In the conventional display panel, a circular polarizer is disposed on a surface thereof to attenuate reflection of ambient light, thereby improving display contrast, and a specific principle is described below in connection with fig. 1.
The circular polarizer comprises a polarizing layer 11 and a quarter wave plate 12, wherein the polarizing layer 11 converts light incident from the outside into linear polarized light, the linear polarized light is converted into circular polarized light after passing through the quarter wave plate 12, and the phase difference is pi/2; then the lower metal layer 13 reflects circularly polarized light, half-wave loss occurs and pi phase difference is increased; the reflected light is converted into linear polarized light perpendicular to the polarization direction of the polarizing layer after passing through the quarter wave plate 12 again, the phase difference is pi, and the light cannot pass through the polarizing layer 11, so that the effect of reducing the reflection of ambient light is achieved.
However, when the uneven metal trace 14 is disposed in the border area, light leakage occurs due to large-angle reflection of light, and referring to fig. 2, after the circularly polarized light converted by the quarter wave plate 12 is incident on the uneven metal trace 14, large-angle oblique light appears, and the optical path difference caused by the light incident into the quarter wave plate is not λ/4, and the retardation after passing through the quarter wave plate 12 isThe direction of the polarizer 11 is not completely perpendicular, so that light leakage can occur through the polarizer 11, i.e. bright lines appear in the frame area.
In order to solve the above-mentioned problems, the embodiment of the present invention provides a display panel, and fig. 3 is a schematic plan view of the display panel and fig. 4 is a schematic sectional view of the display panel for detailed description.
Specifically, the display panel includes a panel body 210, a louver structure layer 220, and a circular polarizer 230.
The panel body 210 includes a display area A1 and a frame area A2, and the frame area A2 is provided with a metal wire 211;
the shutter structure layer 220 is disposed on the frame area A2 of the panel body 210, and includes a plurality of grating strips 221 arranged parallel to each other and spaced apart, and the planar structure of the shutter structure layer in a top view is shown in fig. 5;
the circular polarizer 230 is disposed on the whole surface of the panel body 210 and the louver structure layer 220 to reduce reflection of ambient light.
In this display panel, because the frame area A2 is provided with the metal wiring 211, an uneven reflection surface is provided, the light transmitted through the circular polarizer is reflected into a large-angle oblique light, and the light cannot be blocked by the circular polarizer to cause light leakage during emergent, and by arranging the shutter structural layer 220 in the frame area, this newly added structural layer can effectively block the large-angle oblique light reflected by the metal wiring 211 of the frame area A2, thereby avoiding the bright line problem of the frame area A2 caused by the light emitting out of the circular polarizer.
The principle that the shutter structure layer blocks light is described in detail with reference to the enlarged area schematic view marked by the dashed circle in fig. 3 provided in fig. 6, which blocks light transmission through the densely arranged grating portions 221, specifically, the shutter structure layer only can transmit light within the visible angle α range, and other larger-angle light is cut off, that is, most of the large-angle light reflected by the metal wiring 211 is cut off by the shutter structure layer, only a small part of the light within the visible angle α range of the shutter structure layer can penetrate, and thus the risk of poor bright line of the frame area due to light leakage can be effectively reduced.
It is noted that, in the display panel provided by the embodiment of the present invention, the panel body is a main body structure for realizing a display function in the display panel, and includes a thin film transistor layer, a light emitting layer, and the like disposed in a display area, and a driving circuit, a driving chip, and the like disposed in a frame area, where a metal trace disposed in the frame area is a relevant signal trace in the driving circuit.
Specifically, referring to fig. 7, the panel body 210 in the display panel includes, in order from bottom to top, a first gate wire 212, a first insulating layer 213, a second gate wire 214, a second insulating layer 215, and a source/drain wire 216, wherein the metal wire 211 includes the first gate wire 212, the second gate wire 214, and the source/drain wire 216, but may also include other metal wires according to the actual design requirement of the panel, which is not limited in the present invention. And a planarization layer 240 is generally further provided between the panel body 210 and the louver structural layer 220.
In some embodiments, in order to maximize the interception of the large-angle light reflected by the metal wires by the shutter structural layer, the arrangement direction of the grating strip portion needs to be matched with the arrangement direction of the metal wires, that is, the extension direction of the grating strip portion is the same as the extension direction of the metal wires.
Still further, in some embodiments, the metal traces disposed in the border region may not all extend along one direction, so that the louver structure layer is disposed in a partitioned manner, and the grating strips in different regions extend along different directions to match the metal traces disposed in the lower layer extending along different directions, so as to intercept the high-angle light reflected by the metal traces to the greatest extent. Specifically, the metal wires at least comprise a first metal wire extending along a first direction and a second metal wire extending along a second direction, and the grating strip part comprises a first grating strip part extending along the first direction and a second grating strip part extending along the second direction.
In some embodiments, as shown in fig. 6, the magnitude of the visible angle α of the shutter structure layer depends on the inclination degree of the grating strip side wall, and when the included angle β formed by the grating strip side wall and the plane of the panel main body is larger, the smaller the visible angle α of the shutter structure layer, the less light can pass, which is more beneficial to reducing the defect of the bright line of the frame area caused by light leakage. Through verification, when an included angle beta formed by the side wall of the grating strip part and the plane where the panel main body is located is larger than or equal to 80 degrees, the bad occurrence of the bright line of the frame area can be effectively avoided.
In some embodiments, when the grating strips in the shutter structure layer are arranged densely, the intercepted light range is larger, the light range allowed to be transmitted is smaller, which is more beneficial to reducing the defect of bright lines in the frame area caused by light leakage, and through verification, the lower-layer metal routing arranged by the grating strips in the shutter structure layer can be arranged densely. In one aspect, the width of the grating strip portion may be reduced, the width of the grating strip portion being set smaller than the width of the metal trace; on the other hand, the spacing between two adjacent grating strips can be reduced, and the spacing between two adjacent grating strips is smaller than the spacing between two adjacent metal wires.
Specifically, in a specific embodiment, the width of each grating strip portion is 10-30 micrometers, and the distance between two adjacent grating strip portions is 10-30 micrometers. The specific setting parameters are chosen by the person skilled in the art according to the actual process.
In some embodiments, the grating bars are made of a transparent resin material, such as acrylic resin, which is commonly used in the art, although other transparent resin materials commonly selected in the art may be used, and the invention is not limited thereto.
It should be noted that, in the above display panel embodiment, only the above structure is described, and it should be understood that, in addition to the above structure, any other necessary structure may be included in the display panel provided in the embodiment of the present invention as needed, and the present invention is not limited thereto.
The embodiment of the invention provides a method for manufacturing a display panel, which is described in detail below with reference to a text flow diagram of the method provided in fig. 8 and a structure flow diagram provided in fig. 9a-9 c.
The preparation method of the display panel comprises the following steps:
s10, providing a panel body 210, wherein the panel body comprises a display area and a frame area, and a metal wire 211 is formed in the frame area, namely a structure as shown in FIG. 9a is formed, wherein the arrangement of the display area and the frame area is shown in the previous embodiment, and the description thereof is omitted herein;
s20, forming a shutter structure layer 220 on the frame area of the panel body 210, wherein the shutter structure layer 220 includes a plurality of grating stripe parts 221 which are parallel to each other and are arranged at intervals, namely, a structure as shown in fig. 9b is formed; and
s30, forming a circular polarizer 230 on the panel body 210 and the grating strip 221, i.e. forming the structure shown in fig. 9 c.
In the method for manufacturing a display panel provided by the embodiment, the metal wiring 211 is formed in the frame area, so that the uneven reflection surface is provided, the light transmitted through the circular polarizer is reflected into the large-angle oblique light, the light cannot be blocked by the circular polarizer to cause light leakage during emergent, and the shutter structural layer 220 is formed in the frame area, so that the large-angle oblique light reflected by the metal wiring 211 in the frame area can be effectively blocked by the newly added structural layer, and the problem of bright line in the frame area caused by the fact that the light is emitted out of the circular polarizer is avoided.
In some embodiments, the step of forming the louver structure layer 220 includes: a transparent film layer is formed on the panel body 210, and patterned to form a planarization layer 240 and the shutter structure layer 220, wherein the shutter structure layer 220 is formed on the planarization layer 240.
The planarization layer 240 is generally a conventional necessary structure of the display panel, so that the shutter structure layer 220 and the planarization layer 240 are formed by one process without increasing the manufacturing cost and reducing the manufacturing efficiency. Specifically, the transparent film layer is exposed and developed by a halftone mask plate, the planarization layer 240 is formed on the display area and the frame area of the panel body 210, and the shutter structure layer 220 is formed on the planarization layer 240 in an area corresponding to the frame area.
Another embodiment of the present invention provides a mobile terminal, including the display panel and the terminal main body described in the foregoing embodiments, where the terminal main body and the display panel are combined into a whole, the terminal main body may include a middle frame, a frame glue, and the like, and the mobile terminal may be a mobile display terminal such as a mobile phone, a tablet, and the like.
In the foregoing embodiments, the descriptions of the embodiments are focused on, and the portions of one embodiment that are not described in detail in the foregoing embodiments may be referred to in the foregoing detailed description of other embodiments, which are not described herein again.
The display panel, the preparation method thereof and the mobile terminal provided by the embodiment of the invention are described in detail, and specific examples are applied to the description of the principle and the implementation mode of the invention, and the description of the above examples is only used for helping to understand the method and the core idea of the invention; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present invention, the present description should not be construed as limiting the present invention.
Claims (8)
1. A display panel, the display panel comprising:
the panel main body comprises a display area and a frame area, and the panel main body comprises metal wires arranged in the frame area;
the circular polaroid is arranged on the panel main body; and
the shutter structure layer is arranged between the panel main body and the circular polaroid and is positioned in the frame area, and comprises a plurality of grating strip parts which are parallel to each other and are distributed at intervals, the metal wire at least comprises a first metal wire extending along a first direction and a second metal wire extending along a second direction, the grating strip parts comprise a first grating strip part extending along the first direction and a second grating strip part extending along the second direction, the first direction is different from the second direction, and the extending direction of the grating strip parts is the same as the extending direction of the metal wire.
2. The display panel according to claim 1, wherein an included angle formed between the side wall of the grating strip portion and a plane of the panel main body is 80 degrees or more.
3. The display panel according to claim 1, wherein the width of the grating stripe is smaller than the width of the metal trace, and/or the pitch of two adjacent grating stripes is smaller than the pitch of two adjacent metal traces.
4. A display panel according to claim 3, wherein the width of the grating strips is 10-30 microns, and the spacing between adjacent grating strips is 10-30 microns.
5. The display panel according to claim 1, wherein the grating bar portion is composed of a transparent resin material.
6. A method for manufacturing a display panel, comprising the steps of:
s10, providing a panel body, wherein the panel body comprises a display area and a frame area, and metal wires are formed in the frame area, and the metal wires at least comprise first metal wires extending along a first direction and second metal wires extending along a second direction;
s20, forming a shutter structure layer on a frame area of the panel main body, wherein the shutter structure layer comprises a plurality of grating strip parts which are parallel to each other and are distributed at intervals, each grating strip part comprises a first grating strip part extending along the first direction and a second grating strip part extending along the second direction, the first direction is different from the second direction, and the extending direction of each grating strip part is the same as the extending direction of the metal wire; and
s30, forming a circular polarizer on the panel main body and the grating strip part.
7. The method of manufacturing a display panel according to claim 6, wherein the step of forming the louver structure layer includes: and patterning the transparent film layer on the panel main body to form a planarization layer and the shutter structure layer, wherein the shutter structure layer is formed on the planarization layer.
8. A mobile terminal comprising the display panel according to any one of claims 1 to 5 and a terminal body, the terminal body being integrated with the display panel.
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| CN203825340U (en) * | 2014-05-09 | 2014-09-10 | 京东方科技集团股份有限公司 | Half-transmission-half-reflecting type liquid crystal display panel and liquid crystal display device |
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| KR20150029817A (en) * | 2013-09-10 | 2015-03-19 | 삼성디스플레이 주식회사 | Polarizer plate, display apparatus having the same and method of manufacturing polarizer plate |
| CN205450328U (en) * | 2015-12-25 | 2016-08-10 | 深圳市盛波光电科技有限公司 | Polaroid |
| JP6880474B2 (en) * | 2016-09-13 | 2021-06-02 | 大日本印刷株式会社 | Louver film, display device, liquid crystal display device, organic EL display device, louver film manufacturing method, liquid crystal display manufacturing method, and organic EL display manufacturing method |
| CN206440923U (en) * | 2017-02-14 | 2017-08-25 | 北京京东方显示技术有限公司 | A kind of display panel and display device |
| JP2019095544A (en) * | 2017-11-21 | 2019-06-20 | 三菱電機株式会社 | Image forming device |
| CN107991802A (en) * | 2017-12-06 | 2018-05-04 | 上海天马微电子有限公司 | A kind of display device |
| CN209964152U (en) * | 2019-06-28 | 2020-01-17 | Oppo广东移动通信有限公司 | Electronic device |
| CN111624697A (en) * | 2020-06-28 | 2020-09-04 | 京东方科技集团股份有限公司 | Backlight module and display device |
| CN111863903B (en) * | 2020-07-23 | 2023-04-18 | 武汉天马微电子有限公司 | Display panel, manufacturing method thereof and display device |
| CN112349759B (en) * | 2020-09-04 | 2023-03-03 | 武汉天马微电子有限公司 | Display panel and display device |
| CN112817076A (en) * | 2021-02-05 | 2021-05-18 | 京东方科技集团股份有限公司 | Grating structure and display device |
| CN113066837B (en) * | 2021-03-22 | 2023-07-11 | 合肥维信诺科技有限公司 | Display panel and display device |
| CN116324949A (en) * | 2021-07-28 | 2023-06-23 | 京东方科技集团股份有限公司 | Display substrate and display device |
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| CN203825340U (en) * | 2014-05-09 | 2014-09-10 | 京东方科技集团股份有限公司 | Half-transmission-half-reflecting type liquid crystal display panel and liquid crystal display device |
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