CN110233167B - Display panel, display device and manufacturing method of display panel - Google Patents
Display panel, display device and manufacturing method of display panel Download PDFInfo
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- CN110233167B CN110233167B CN201910527480.XA CN201910527480A CN110233167B CN 110233167 B CN110233167 B CN 110233167B CN 201910527480 A CN201910527480 A CN 201910527480A CN 110233167 B CN110233167 B CN 110233167B
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- 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
- H10K59/40—OLEDs integrated with touch screens
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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
- H10K59/60—OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes
- H10K59/65—OLEDs integrated with inorganic image sensors
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Abstract
The embodiment of the application provides a display panel, a display device and a manufacturing method of the display panel. The display panel includes: a display substrate provided with a first through hole; the display substrate comprises a polaroid and a first optical adhesive layer which are sequentially attached to each other in the light emergent direction of the display substrate, wherein the polaroid is provided with a second through hole, and the first optical adhesive layer is provided with a third through hole; the radiating fin is attached to one side, away from the polaroid, of the display substrate, and is provided with a fourth through hole; wherein: the orthographic projection areas of the first through hole, the second through hole, the third through hole and the fourth through hole on the display substrate are all located in the display area, an accommodating space is formed, and the accommodating space is used for accommodating the image sensor. The display panel of this embodiment is laminated through display substrate, polaroid, first optics glue film, fin etc. that will be provided with the through-hole, and the accommodation space that is located the display area that each through-hole formed is used for holding optical sensor, when guaranteeing leading camera function, can show improvement display panel's screen to account for than.
Description
Technical Field
The application relates to the technical field of display, in particular to a display panel, a display device and a manufacturing method of the display panel.
Background
With the increasing popularization of electronic equipment such as mobile phones, the screen occupation ratio of mainstream mobile phones in the market is higher and higher, products with higher screen occupation ratio are supplied to the market, and the technical competitiveness of the products can be improved. Since the mobile phone usually needs a front camera, the conventional method is to dispose the image sensor of the camera in the frame area, which inevitably reduces the screen occupation ratio of the display panel.
Disclosure of Invention
The application provides a display panel, a display device and a manufacturing method of the display panel aiming at the defects of the prior art, and aims to solve the technical problem that the display panel in the prior art is low in screen occupation ratio.
In a first aspect, an embodiment of the present application provides a display panel including a display area, the display panel including:
a display substrate provided with a first through hole;
the display substrate comprises a polaroid and a first optical adhesive layer which are sequentially attached to each other in the light emergent direction of the display substrate, wherein the polaroid is provided with a second through hole, and the first optical adhesive layer is provided with a third through hole;
the radiating fin is attached to one side, away from the polaroid, of the display substrate, and is provided with a fourth through hole; wherein:
the first through hole, the second through hole, the third through hole and the fourth through hole are located in orthographic projection areas of the display substrate, an accommodating space is formed and used for accommodating the image sensor.
Optionally, the display panel further comprises: the touch control functional layer is positioned between the display substrate and the polaroid and is provided with a fifth through hole; the second optical adhesive layer is positioned between the display substrate and the touch control functional layer and is provided with a sixth through hole; the orthographic projection areas of the fifth through hole and the sixth through hole on the display substrate are located in the display area, and the accommodation space is formed by the fifth through hole, the sixth through hole, the first through hole, the second through hole, the third through hole and the fourth through hole.
Optionally, the method further comprises: the cover plate is positioned on one side, far away from the polaroid, of the first optical adhesive layer and comprises a light-transmitting area and a light-shading area positioned around the light-transmitting area; the orthographic projection of the image sensor on the cover plate covers the light transmitting area, and the orthographic projection of the inner wall of the first through hole on the cover plate is located in the light shading area.
Optionally, the display substrate includes a dummy pixel region, and the first via hole is located in the dummy pixel region.
Optionally, the diameters of the fourth through hole, the first through hole, the sixth through hole, the fifth through hole, the second through hole and the third through hole are sequentially reduced or increased.
Optionally, the diameters of the fourth through hole, the first through hole, the sixth through hole, the fifth through hole, the second through hole and the third through hole are an arithmetic progression, and an absolute value of a tolerance of the arithmetic progression is a sum of cutting accuracy and bonding accuracy of the single-layer film layer.
In a second aspect, an embodiment of the present application provides a display panel including a display area, the display panel including:
the display substrate comprises a display substrate, a polaroid, a first optical adhesive layer and a radiating fin, wherein the polaroid and the first optical adhesive layer are sequentially attached to the display substrate in the light emergent direction; and
and the seventh through hole penetrates through the display substrate, the polarizer, the first optical adhesive layer and the radiating fin, the orthographic projection area of the seventh through hole on the display substrate is positioned in the display area, and the seventh through hole is used for accommodating an image sensor.
In a third aspect, embodiments of the present application provide a display device, which includes the display panel described in any one of the above.
In a fourth aspect, an embodiment of the present application provides a manufacturing method of a display panel, where the display panel includes a display area, and the manufacturing method includes:
manufacturing a first through hole on a display substrate;
manufacturing a second through hole on the polarizer;
manufacturing a third through hole on the first optical adhesive layer;
manufacturing a fourth through hole on the heat dissipation sheet;
the polaroid and the first optical adhesive layer are sequentially attached to the display substrate in the light emergent direction, and the radiating fin is attached to one side, away from the polaroid, of the display substrate;
the orthographic projection areas of the first through hole, the second through hole, the third through hole and the fourth through hole on the display substrate are all located in the display area, an accommodating space is formed, and the accommodating space is used for accommodating the image sensor.
In a fifth aspect, an embodiment of the present application provides a manufacturing method of a display panel, where the display panel includes a display area, and the manufacturing method includes:
sequentially attaching a polaroid and a first optical adhesive layer to the light emergent direction of a display substrate, and attaching a radiating fin to one side of the display substrate, which is far away from the polaroid;
and manufacturing a seventh through hole penetrating through the radiating fin, the display substrate, the polarizer and the first optical adhesive layer, wherein orthographic projection areas of the seventh through hole on the display substrate are all located in the display area, and the seventh through hole is used for accommodating an image sensor.
The technical scheme provided by the embodiment of the application has the following beneficial technical effects:
in the display panel, the display device and the manufacturing method of the display panel of the embodiment, the accommodating space or the seventh through hole for accommodating the optical sensor is formed in the display area of the display panel, so that the front-end camera function is ensured, and the screen occupation ratio of the display panel can be remarkably improved.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic top view of a display panel in the related art;
fig. 2 is a schematic top view of a display panel according to an embodiment of the present disclosure;
FIG. 3 is an exploded view of the display panel shown in FIG. 2 after being cut along line A-A;
FIG. 4 is a schematic cross-sectional view of the display panel shown in FIG. 2 after cutting;
fig. 5 is a schematic cross-sectional view of another display panel provided in an embodiment of the present application;
fig. 6 is a schematic partial top view illustrating another display panel according to an embodiment of the present disclosure;
FIG. 7 is a schematic cross-sectional view of the display panel shown in FIG. 6 cut along line B-B;
fig. 8 is a schematic top view illustrating a display substrate according to an embodiment of the present disclosure;
fig. 9 is a schematic top view illustrating a further display panel according to an embodiment of the present disclosure;
FIG. 10 is a schematic cross-sectional view of the display panel shown in FIG. 9 taken along line C-C;
fig. 11 is a schematic cross-sectional view of another display panel provided in this embodiment of the application;
FIG. 12 is a schematic cross-sectional view of yet another display panel provided in an embodiment of the present application;
fig. 13 is a schematic top view illustrating a display device according to an embodiment of the present disclosure;
fig. 14 is a flowchart of a method for manufacturing a display surface according to an embodiment of the present disclosure;
fig. 15 is a flowchart of another method for manufacturing a display surface according to an embodiment of the present disclosure.
Description of the drawings:
1-a display substrate; 101-a first via; 102-dummy pixel regions;
2-a polarizer; 201-a second via;
3-a first optical glue layer; 301-a third via;
4-a heat sink; 401-a fourth via;
5-a touch functional layer; 501-a fifth through hole;
6-a second optical adhesive layer; 601-a sixth via;
a T-accommodation space;
7-cover plate; 701-a light-transmitting region; 702-a light-shielding area;
8-an image sensor;
9-a seventh via;
10-a display area; 20-frame area.
Detailed Description
Reference will now be made in detail to the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar parts or parts having the same or similar functions throughout. In addition, if a detailed description of the known art is not necessary for illustrating the features of the present application, it is omitted. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
It will be understood by those within the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
Since the mobile phone usually needs a front camera, the conventional method is to dispose the image sensor of the camera in the frame area, which inevitably reduces the screen occupation ratio of the display panel. As shown in fig. 1, the display panel includes a display area 10 and a frame area 20 located around the display area 10, since a light-transmitting hole 21 of an image sensor of a front camera is reserved in the frame area 20, the area of the frame area 20 is larger, and the larger the area of the frame area 20 is, the lower the screen occupation ratio of the display panel is. The screen ratio of the display panel shown in fig. 1 is typically below 80%, which is far from satisfying the requirement of high screen ratio.
The application provides a display panel, a display device and a manufacturing method of the display panel, and aims to solve the technical problems in the prior art.
The following describes the technical solutions of the present application and how to solve the above technical problems with specific embodiments.
Referring to fig. 2 to 4, the display panel provided in this embodiment includes a display area 10, and the display panel includes:
a display substrate 1 provided with a first through hole 101;
the display substrate comprises a polaroid 2 and a first optical adhesive layer 3 which are sequentially attached to each other in the light emergent direction of the display substrate 1, wherein the polaroid 2 is provided with a second through hole 201, and the first optical adhesive layer 3 is provided with a third through hole 301;
the radiating fin 4 is attached to one side, away from the polaroid 2, of the display substrate 1, and the radiating fin 4 is provided with a fourth through hole 401; wherein:
the orthographic projection areas of the first through hole 101, the second through hole 201, the third through hole 301 and the fourth through hole 401 on the display substrate 1 are all located in the display area 10, and form an accommodating space T for accommodating the image sensor 8.
The display panel of this embodiment is laminated through display substrate, polaroid, first optics glue film, fin etc. that will be provided with the through-hole, and the accommodation space that is located the display area that each through-hole formed is used for holding optical sensor, when guaranteeing leading camera function, can show improvement display panel's screen to account for than.
With continued reference to fig. 2 to 4, it should be noted that, although only one image sensor 8 is mounted on the display panel shown in fig. 2 to 4, in practice, a plurality of image sensors 8 may be provided to improve the image capturing performance. For the case where the number of the image sensors 8 is plural, one way is to set a corresponding number of accommodating spaces T according to the number of the image sensors 8, and each accommodating space T accommodates one image sensor 8 therein; another way is to shape the accommodating space T so that one accommodating space T can accommodate a plurality of image sensors 8. Specifically, each through hole forming the accommodating space T at this time may be an oval through hole, a rectangular through hole, a kidney-shaped through hole, or the like.
It should be noted that the display panel provided in this embodiment may be an organic light emitting display panel. In the following embodiments, the display panel refers to an organic light emitting display panel unless otherwise specified.
Optionally, referring to fig. 5, the display panel provided in this embodiment further includes: the touch functional layer 5 is positioned between the display substrate 1 and the polarizer 2, and the touch functional layer 5 is provided with a fifth through hole 501; the second optical adhesive layer 6 is positioned between the display substrate 1 and the touch functional layer 5, and the second optical adhesive layer 6 is provided with a sixth through hole 601; the orthographic projection areas of the fifth through hole 501 and the sixth through hole 601 on the display substrate 1 are both located in the display area, and form an accommodating space T with the first through hole 101, the second through hole 201, the third through hole 301 and the fourth through hole 401. The display panel provided by the embodiment includes a touch functional layer 5 and a second optical adhesive layer 6 for adhering the display substrate 1 and the touch functional layer 5, so that the display panel has a touch function.
Optionally, referring to fig. 6 and fig. 7, the display panel provided in this embodiment further includes: the cover plate 7 is positioned on one side of the first optical adhesive layer 3 away from the polarizer 2, and the cover plate 7 comprises a light-transmitting area 701 and a light-shielding area 702 positioned around the light-transmitting area 701; an orthographic projection of the image sensor 8 on the cover plate 7 covers the light-transmitting area 701, and an orthographic projection of the inner wall of the first through hole 101 on the cover plate 7 is located in the light-shielding area 702. Due to the phenomena of reflection, refraction and the like occurring around the first through hole 101 and the change of the lines of the pixel units around the first through hole 101 caused by the first through hole 101, the display effect in a certain range around the first through hole 101 is poor, and therefore, the light shielding area 702 on the cover plate 7 needs to shield the area with poor display effect on the display substrate 1; the light-transmitting region 701 is to allow light outside the display panel to be collected by the image sensor. Specifically, the cover plate 7 may be a glass cover plate, and the light shielding region 702 may be formed on the glass cover plate by screen printing.
Optionally, referring to fig. 8, in the display panel provided in this embodiment, the display substrate 1 includes a dummy pixel region 102, and the first through hole (not shown in fig. 8) is located in the dummy pixel region 102. In the organic light emitting display substrate, part of the dummy pixel units in the dummy pixel region 102 are removed in the process of manufacturing the first through holes, and therefore, in order to ensure normal display, various signal lines of the pixel units for display around the dummy pixel region bypass the dummy pixel region 102.
Referring to fig. 9 and 10, the display panel provided in this embodiment may further include a frame area 20, and since the image sensor of the front camera is disposed in the display area 10 and does not occupy the space of the frame area 20, the area of the frame area 20 may be reduced, thereby improving the screen occupation ratio of the display panel.
In order to ensure that the image sensor can smoothly enter the accommodating space, each through hole can be gradually increased or decreased in the light emitting direction of the display panel. Referring to fig. 10, the hole diameters of the fourth through hole 401, the first through hole 101, the sixth through hole 601, the fifth through hole 501, the second through hole 201, and the third through hole 301 decrease in sequence. Of course, the diameters of the fourth through hole 401, the first through hole 101, the sixth through hole 601, the fifth through hole 501, the second through hole 201, and the third through hole 301 may be increased in this order. It should be understood that the through hole with the smallest aperture should be slightly larger than the diameter of the image sensor to ensure that the image sensor 8 can smoothly enter the accommodating space T.
Further, the apertures of the through holes in the light emitting direction of the display panel may be in an arithmetic progression. With reference to fig. 10, the diameters of the fourth via 401, the first via 101, the sixth via 601, the fifth via 501, the second via 201, and the third via 301 are in an arithmetic progression, and an absolute value of a tolerance of the arithmetic progression is a sum of the cutting precision and the bonding precision of the single-layer film. The aperture of the through hole with the smallest aperture should be adaptively adjusted according to the image sensor 8, for example, table 1 shows the aperture of each through hole and the diameter of the image sensor in one embodiment, please refer to table 1:
TABLE 1 Aperture statistical table for each through-hole
| Name (R) | Diameter (mm) | Cutting accuracy (mm) | Application accuracy (mm) |
| Image sensor with a plurality of pixels | 3.5 | 0.05 | 0.05 |
| First optical cement layer (third through hole) | 3.6 | 0.05 | 0.05 |
| Polaroid (second through hole) | 3.7 | 0.05 | 0.05 |
| Touch control functional layer (fifth through hole) | 3.8 | 0.05 | 0.05 |
| Second optical adhesive layer (sixth through hole) | 3.9 | 0.05 | 0.05 |
| Display substrate (first through hole) | 4.0 | 0.05 | 0.05 |
| Heat radiating fin (fourth through hole) | 4.1 | 0.05 | 0.05 |
In the specific example of the hole diameter of each through hole shown in table 1, the sum (0.05mm +0.05mm ═ 0.1mm) of the diameter (3.5mm) of the image sensor 8 and the above tolerance is set as the diameter of the through hole having the smallest hole diameter, that is, the hole diameter of the third through hole 301 is 3.6 mm. The aperture of each through hole is designed in this way, and even if some deviation occurs in the process of manufacturing the through holes and the process of attaching, the image sensor 8 can still be ensured to be placed in the accommodating space T.
It should be noted that each through hole shown in table 1 is a circular hole, and when each through hole is a through hole of other shape, "aperture" may include a plurality of parameters, for example, in the case of an elliptical through hole, the aperture includes a value of a major axis and a value of a minor axis.
It should be noted that the cutting accuracy is the difference between the actual aperture and the standard aperture, and the difference may be a positive number or a negative number, but in the present application, the cutting accuracy refers to the absolute value of the difference.
Optionally, in order to prevent the particles from entering the accommodating space T, an adhesive may be filled between the image sensor 8 and the sidewall of the accommodating space T. The adhesive can also play a role in fixing the image sensor 8, so that the situation that the image sensor 8 is displaced to influence the shooting effect is avoided.
Based on the same inventive concept, the present embodiment provides a display panel, please refer to fig. 2 and fig. 11, the display panel provided by the present embodiment includes a display area 10, the display panel includes:
the display substrate comprises a display substrate 1, a polaroid 2 and a first optical adhesive layer 3 which are sequentially attached to the display substrate 1 in the light emergent direction, and a radiating fin 4 attached to one side of the display substrate 1, which is far away from the polaroid 2; and a seventh through hole 9 penetrating through the display substrate 1, the polarizer 2, the first optical adhesive layer 3 and the heat sink 4, wherein the orthographic projection area of the seventh through hole 9 on the display substrate 1 is located in the display area 10, and the seventh through hole 9 is used for accommodating the image sensor 8.
According to the display panel provided by the embodiment, the seventh through hole is formed in the display area of the display panel after the display panel is attached, the seventh through hole is used for accommodating the optical sensor, and the screen occupation ratio of the display panel can be remarkably improved while the front-end camera shooting function is ensured.
It should be noted that the seventh through hole 9 may be formed by using a laser cutting technique, and since the materials of the display substrate 1, the polarizer 2, the first optical adhesive layer 3 and the heat sink 4 are different, the cutting precision is different when the same laser energy is applied to different film materials, and the thermal influence is different, the hole diameters of the film layers are different when the seventh through hole 9 is formed.
With continued reference to fig. 2 and 11, it should be noted that although the display panel shown in fig. 2 and 11 includes only one image sensor 8, in practice, the number of image sensors 8 may be multiple in order to improve the image capturing performance. For the case that the number of the image sensors 8 is plural, one way is to set a corresponding number of the seventh through holes 9 according to the number of the image sensors 8, that is, one image sensor 8 is accommodated in each of the seventh through holes 9; another way is to arrange the shape of the seventh through hole 9 such that one seventh through hole 9 can accommodate a plurality of image sensors 8, in particular, in this case, the seventh through hole 9 may be an oval through hole, a rectangular through hole, a kidney-shaped through hole, or the like.
Optionally, referring to fig. 12, the display panel provided in this embodiment further includes: the touch control functional layer 5 is positioned between the display substrate 1 and the polaroid 2, and the second optical adhesive layer 6 is positioned between the display substrate 1 and the touch control functional layer 5; the seventh through hole 9 penetrates through the display substrate 1, the polarizer 2, the first optical adhesive layer 3, the heat sink 4, the touch functional layer 5 and the second optical adhesive layer 6. The display panel provided by the embodiment comprises a touch functional layer and a second optical adhesive layer for attaching the display substrate and the touch functional layer, so that the display panel has a touch function.
Optionally, referring to fig. 12, the display panel provided in this embodiment further includes: the cover plate 7 is positioned on one side of the first optical adhesive layer 3 away from the polarizer 2, and the cover plate 7 comprises a light-transmitting area 701 and a light-shielding area 702 positioned around the light-transmitting area 701; an orthographic projection of the image sensor 8 on the cover plate 7 covers the light transmitting area 701, and an orthographic projection of the inner wall of the hole formed on the display substrate 1 on the cover plate 7 is located in the light shielding area 702. Due to the reflection and refraction phenomena occurring around the hole on the display substrate and the change of the lines of the pixel units around the hole caused by the hole on the display substrate, the display effect in a certain range around the hole on the display substrate is poor, and therefore, the light shielding region 702 on the cover plate 7 is required to shield the area on the display substrate 1 with poor display effect; the light-transmitting region 701 is to allow light outside the display panel to be collected by the image sensor. Specifically, the cover plate 7 may be a glass cover plate, and the light shielding region 702 may be formed on the glass cover plate by screen printing.
With continued reference to fig. 12, the display panel may further include a frame area 20, and since the image sensor 8 of the front camera is disposed in the display area 10 and does not occupy the space of the frame area 20, the area of the frame area 20 may be reduced, thereby increasing the screen occupation ratio of the display panel.
Optionally, referring to fig. 8, in the display panel provided in this embodiment, the display substrate 1 includes a dummy pixel region 102, and an orthogonal projection of the seventh through hole 9 (not shown in fig. 8) on the display substrate 1 is located in the dummy pixel region 102. The dummy pixel region 102 includes a plurality of dummy pixel units, the dummy pixel units improve the process accuracy by way of occupying space, the dummy pixel units are not used for emitting light, and in the organic light emitting display substrate, part of the dummy pixel units in the dummy pixel region 102 are removed in the process of manufacturing through holes, so that various signal lines of the pixel units for display around the dummy pixel region 102 are bypassed to avoid the dummy pixel region 102 in order to ensure normal display.
Optionally, with continued reference to fig. 12, in order to prevent particles from entering the seventh through hole 9, an adhesive may be filled between the image sensor 8 and the sidewall of the seventh through hole 9. The adhesive can also play a role in fixing the image sensor 8, so that the situation that the image sensor 8 is displaced to influence the shooting effect is avoided.
Based on the same inventive concept, the present embodiment provides a display device, please refer to fig. 13, which includes the display panel in any of the above embodiments. The display device in this embodiment may be an electronic device such as a mobile phone and a tablet computer that requires a front-facing camera function. The display device provided by the embodiment can realize the beneficial effects of the corresponding display panel, and is not described herein again.
Based on the same inventive concept, the present embodiment provides a method for manufacturing a display panel, where the display panel includes a display area, please refer to fig. 14, and the method includes:
s101: manufacturing a first through hole on a display substrate;
s102: manufacturing a second through hole on the polarizer;
s103: manufacturing a third through hole on the first optical adhesive layer;
s104: manufacturing a fourth through hole on the heat dissipation sheet;
s105: sequentially attaching a polaroid and a first optical adhesive layer in the light emergent direction of the display substrate, and attaching a radiating fin on one side of the display substrate, which is far away from the polaroid;
the orthographic projection areas of the first through hole, the second through hole, the third through hole and the fourth through hole on the display substrate are all located in the display area, an accommodating space is formed, and the accommodating space is used for accommodating the image sensor.
In the manufacturing method of the display panel provided by the embodiment, through holes are respectively manufactured on the display substrate, the polarizer, the first optical adhesive layer and the heat sink, and then the through holes are attached, so that the accommodating space formed by the through holes and located in the display area is used for accommodating the optical sensor, and the screen occupation ratio of the display panel can be remarkably improved while the front-end camera function is ensured; and the manufacturing process is simple, and the single-layer punching has higher precision.
S101 to S104 may be performed in the above order, or all or part of the steps may be performed simultaneously. Usually, these steps need to be performed in different workshops, but when some or all of the involved films are processed in the same process, the through holes can be formed in the same workshop by using the films processed in the same process. For example, the display substrate is formed with through holes by laser cutting, and the polarizer, the first optical adhesive layer and the heat sink are formed with through holes by stamping in the same workshop.
The display panel may be provided with only one image sensor, but actually, the number of image sensors may be plural to improve the imaging performance. For the case that the number of the image sensors is multiple, one way is to set up a corresponding number of accommodating spaces according to the number of the image sensors, that is, each accommodating space accommodates one image sensor; another way is to arrange the shape of the accommodating space so that one accommodating space can accommodate a plurality of image sensors, and specifically, each through hole forming the accommodating space at this time may be an oval through hole, a rectangular through hole, a kidney-shaped through hole, or the like.
Optionally, when the display panel includes the touch functional layer and the second optical adhesive layer, the manufacturing method of the display panel provided in this embodiment further includes:
manufacturing a fifth through hole on the touch functional layer;
manufacturing a sixth through hole on the second optical adhesive layer;
in this case, S105 specifically includes: the second optical adhesive layer, the touch control functional layer, the polaroid and the first optical adhesive layer are sequentially attached to the light emitting direction of the display substrate, and the radiating fin is attached to one side, away from the polaroid, of the display substrate. The orthographic projection areas of the fifth through hole and the sixth through hole on the display substrate are located in the display area, and form accommodating spaces with the first through hole, the second through hole, the third through hole and the fourth through hole, and the accommodating spaces are used for accommodating the image sensor.
In this embodiment, the steps of respectively manufacturing the through holes on the touch functional layer and the second optical adhesive layer are added, and the touch functional layer and the second optical adhesive layer are attached to the display panel, so that the obtained display panel has a touch function.
Optionally, the method for manufacturing a display panel provided in this embodiment further includes: attaching a cover plate to one side of the first optical adhesive layer, which is far away from the polaroid, wherein the cover plate comprises a light-transmitting area and a shading area positioned around the light-transmitting area; the orthographic projection of the image sensor on the cover plate covers the light transmitting area, and the orthographic projection of the inner wall of the first through hole on the cover plate is located in the light shielding area. Based on the phenomena of reflection, refraction and the like occurring around the first through hole and the change of the lines of the pixel units around the first through hole caused by the first through hole, the display effect in a certain range around the first through hole is poor, and therefore, the region with poor display effect on the display substrate needs to be shielded by the light shielding region on the cover plate; and the light-transmitting area is used for enabling light outside the display panel to be collected by the image sensor. Specifically, the cover plate may be a glass cover plate, and the light shielding region may be fabricated on the glass cover plate by screen printing.
Optionally, when the display substrate is manufactured, a dummy pixel region is formed in the display region of the display substrate, in this case, step S101 specifically includes: a first through hole is formed in a dummy pixel region of a display substrate. The dummy pixel area comprises a plurality of dummy pixel units, the dummy pixel units improve the process accuracy in an occupation mode, the dummy pixel units are not used for emitting light, in the organic light-emitting display substrate, part of the dummy pixel units in the dummy pixel area are removed in the process of manufacturing through holes, and therefore, in order to guarantee normal display, various signal lines of the pixel units used for display around the dummy pixel area are avoided from the dummy pixel area in a bypassing mode.
Optionally, the display panel may further include a frame region, and during the manufacturing process, a black frame may be manufactured at an edge of the cover plate by a screen printing method. Because the image sensor of the front camera is arranged in the display area and does not occupy the space of the frame area, the area of the frame area can be reduced, and the screen occupation ratio of the display panel is improved.
Optionally, in the manufacturing method provided in this embodiment, in each step of manufacturing the through holes, the apertures of the first through hole, the second through hole, the third through hole, the fourth through hole, the fifth through hole, and the sixth through hole are controlled, so that each through hole may gradually increase or decrease in the light emitting direction of the display panel. For the specific change of the aperture, please refer to the above embodiment of the display panel, which is not described herein again.
Based on the same inventive concept, the present embodiment provides a method for manufacturing a display panel, where the display panel includes a display area, please refer to fig. 15, and the method includes:
s201: sequentially attaching a polaroid and a first optical adhesive layer in the light emergent direction of the display substrate, and attaching a radiating fin on one side of the display substrate, which is far away from the polaroid;
s202: and manufacturing a seventh through hole penetrating through the radiating fin, the display substrate, the polarizer and the first optical adhesive layer, wherein the orthographic projection area of the seventh through hole on the display substrate is located in the display area, and the seventh through hole is used for accommodating the image sensor.
According to the manufacturing method of the display panel provided by the embodiment, the seventh through hole for accommodating the optical sensor is manufactured in the display area of the display panel after the display panel is attached, so that the front-facing camera function is ensured, and the screen occupation ratio of the display panel can be remarkably improved.
It should be noted that S202 specifically includes: and manufacturing a seventh through hole penetrating through the radiating fin, the display substrate, the polarizer and the first optical adhesive layer by adopting a laser cutting technology. Because the display substrate, the polarizer, the first optical adhesive layer and the heat sink are made of different materials, the cutting precision is different when the same laser energy is applied to different film materials, and the thermal influence is different, the aperture of each film layer is different when the seventh through hole is manufactured.
The display panel may be provided with only one image sensor, but actually, the number of image sensors may be plural to improve the imaging performance. For the case that the number of the image sensors is multiple, one way is to set a corresponding number of seventh through holes according to the number of the image sensors, that is, each seventh through hole accommodates one image sensor; another way is to design the shape of the seventh through hole such that one seventh through hole can accommodate a plurality of image sensors, specifically, each through hole forming the seventh through hole at this time may be an oval through hole, a rectangular through hole, a kidney-shaped through hole, or the like.
Optionally, when the display panel includes the touch functional layer and the second optical adhesive layer, in the manufacturing method of the display panel provided in this embodiment:
s201 specifically comprises the following steps: sequentially attaching a second optical adhesive layer, a touch control functional layer, a polaroid and a first optical adhesive layer in the light emergent direction of the display substrate, and attaching a radiating fin on one side of the display substrate, which is far away from the polaroid;
s201 specifically comprises the following steps: and manufacturing a seventh through hole penetrating through the radiating fin, the display substrate, the second optical adhesive layer, the touch control functional layer, the polaroid and the first optical adhesive layer, wherein the orthographic projection area of the seventh through hole on the display substrate is located in the display area, and the seventh through hole is used for accommodating the image sensor.
Optionally, when the display panel further includes a cover plate, the manufacturing method provided in this embodiment further includes: attaching a cover plate to one side of the first optical adhesive layer, which is far away from the polaroid, wherein the cover plate comprises a light-transmitting area and a shading area positioned around the light-transmitting area; an orthographic projection of the image sensor on the cover plate covers the light transmitting area, and an orthographic projection of an inner wall of the hole formed in the display substrate on the cover plate is located in the light shielding area. Due to the phenomena of reflection, refraction and the like occurring around the hole on the display substrate and the change of the lines of the pixel units around the hole caused by the hole on the display substrate, the display effect in a certain range around the hole on the display substrate is poor, and therefore, the region with poor display effect on the display substrate needs to be shielded by the light shielding region on the cover plate; and the light-transmitting area is used for enabling light outside the display panel to be collected by the image sensor. Specifically, the cover plate may be a glass cover plate, and the light shielding region may be fabricated on the glass cover plate by screen printing.
Optionally, the display panel may further include a frame region, and during the manufacturing process, a black frame may be manufactured at an edge of the cover plate by a screen printing method. Because the image sensor of the front camera is arranged in the display area and does not occupy the space of the frame area, the area of the frame area can be reduced, and the screen occupation ratio of the display panel is improved.
Optionally, when the display substrate is manufactured, a dummy pixel region is formed in the display region of the display substrate, in this case, step S202 specifically includes: and manufacturing a seventh through hole penetrating through the radiating fin, the display substrate, the polarizer and the first optical adhesive layer, wherein the orthographic projection area of the seventh through hole on the display substrate is positioned in the dummy pixel area, and the seventh through hole is used for accommodating the image sensor. The dummy pixel area comprises a plurality of dummy pixel units, the dummy pixel units improve the process accuracy in an occupation mode, the dummy pixel units are not used for emitting light, in the organic light-emitting display substrate, part of the dummy pixel units in the dummy pixel area are removed in the process of manufacturing through holes, and therefore, in order to guarantee normal display, various signal lines of the pixel units used for display around the dummy pixel area are avoided from the dummy pixel area in a bypassing mode.
By applying the embodiment of the application, at least the following beneficial effects can be realized:
in the display panel, the display device and the manufacturing method of the display panel of the embodiment, the accommodating space or the seventh through hole for accommodating the optical sensor is formed in the display area of the display panel, so that the front-end camera function is ensured, and the screen occupation ratio of the display panel can be remarkably improved.
Those of skill in the art will appreciate that the various operations, methods, steps in the processes, acts, or solutions discussed in this application can be interchanged, modified, combined, or eliminated. Further, other steps, measures, or schemes in various operations, methods, or flows that have been discussed in this application can be alternated, altered, rearranged, broken down, combined, or deleted. Further, steps, measures, schemes in the prior art having various operations, methods, procedures disclosed in the present application may also be alternated, modified, rearranged, decomposed, combined, or deleted.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
It should be understood that, although the steps in the flowcharts of the figures are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and may be performed in other orders unless explicitly stated herein. Moreover, at least a portion of the steps in the flow chart of the figure may include multiple sub-steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed alternately or alternately with other steps or at least a portion of the sub-steps or stages of other steps.
The foregoing is only a partial embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations should also be regarded as the protection scope of the present application.
Claims (6)
1. A display panel including a display area, comprising:
a display substrate provided with a first through hole;
the display substrate comprises a display substrate, a second optical adhesive layer, a touch control functional layer, a polaroid and a first optical adhesive layer which are sequentially attached to the display substrate in the light emergent direction, wherein the polaroid is provided with a second through hole, the first optical adhesive layer is provided with a third through hole, the second optical adhesive layer is provided with a sixth through hole, and the touch control functional layer is provided with a fifth through hole;
the radiating fin is attached to one side, away from the polaroid, of the display substrate, and is provided with a fourth through hole; wherein:
orthographic projection areas of the first through hole, the second through hole, the third through hole, the fourth through hole, the fifth through hole and the sixth through hole on the display substrate are all located in the display area, and an accommodating space is formed and used for accommodating an image sensor;
the diameters of the fourth through hole, the first through hole, the sixth through hole, the fifth through hole, the second through hole and the third through hole are in an arithmetic progression, and the absolute value of the tolerance of the arithmetic progression is the sum of the cutting precision and the bonding precision of the single-layer film layer.
2. The display panel according to claim 1, further comprising:
the cover plate is positioned on one side, far away from the polaroid, of the first optical adhesive layer and comprises a light-transmitting area and a light-shading area positioned around the light-transmitting area;
the orthographic projection of the image sensor on the cover plate covers the light transmitting area, and the orthographic projection of the inner wall of the first through hole on the cover plate is located in the light shading area.
3. The display panel of claim 2, wherein the display substrate comprises a dummy pixel region, and the first via is located in the dummy pixel region.
4. The display panel according to any one of claims 1 to 3, wherein the fourth through hole, the first through hole, the sixth through hole, the fifth through hole, the second through hole, and the third through hole have a hole diameter that decreases or increases in order.
5. A display device characterized by comprising the display panel according to any one of claims 1 to 4.
6. A manufacturing method of a display panel, the display panel comprising a display area, the manufacturing method comprising:
manufacturing a first through hole on a display substrate;
manufacturing a second through hole on the polarizer;
manufacturing a third through hole on the first optical adhesive layer;
manufacturing a fourth through hole on the heat dissipation sheet;
manufacturing a fifth through hole on the touch functional layer;
manufacturing a sixth through hole on the second optical adhesive layer;
the second optical adhesive layer, the touch control functional layer, the polaroid and the first optical adhesive layer are sequentially attached to the display substrate in the light emergent direction, and the radiating fin is attached to one side, away from the polaroid, of the display substrate;
wherein orthographic projection areas of the first through hole, the second through hole, the third through hole, the fourth through hole, the fifth through hole and the sixth through hole on the display substrate are all located in the display area and form an accommodating space, and the accommodating space is used for accommodating an image sensor;
the diameters of the fourth through hole, the first through hole, the sixth through hole, the fifth through hole, the second through hole and the third through hole are in an arithmetic progression, and the absolute value of the tolerance of the arithmetic progression is the sum of the cutting precision and the bonding precision of the single-layer film layer.
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| CN201910527480.XA CN110233167B (en) | 2019-06-18 | 2019-06-18 | Display panel, display device and manufacturing method of display panel |
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| CN111029375B (en) * | 2019-11-25 | 2023-10-31 | 云谷（固安）科技有限公司 | Display screen and display device |
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| CN111524469A (en) * | 2020-02-17 | 2020-08-11 | 京东方科技集团股份有限公司 | Display device and polarizer |
| CN111179746B (en) | 2020-02-21 | 2022-06-07 | 京东方科技集团股份有限公司 | Display panel, preparation method thereof and display device |
| KR20210109091A (en) * | 2020-02-26 | 2021-09-06 | 삼성디스플레이 주식회사 | Electronic apparatus |
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| CN113628530B (en) * | 2020-05-07 | 2023-09-26 | 群创光电股份有限公司 | Display device and mobile device |
| US11342542B2 (en) | 2020-06-09 | 2022-05-24 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Manufacturing method of display device |
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| CN111900259B (en) * | 2020-06-15 | 2023-02-07 | 昆山国显光电有限公司 | Display panel, display device and preparation method of display panel |
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| KR20220016342A (en) * | 2020-07-30 | 2022-02-09 | 삼성디스플레이 주식회사 | Display device |
| CN112002710A (en) * | 2020-08-13 | 2020-11-27 | 武汉华星光电半导体显示技术有限公司 | Through-hole screen, preparation method thereof and display device |
| US11832505B2 (en) | 2020-08-13 | 2023-11-28 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Perforated display screen, method of manufacturing same, and display device |
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| WO2022174390A1 (en) * | 2021-02-19 | 2022-08-25 | 京东方科技集团股份有限公司 | Display substrate and manufacturing method therefor, and display apparatus |
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