CN112103320B - Display panel and display device - Google Patents
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- CN112103320B CN112103320B CN202011001359.2A CN202011001359A CN112103320B CN 112103320 B CN112103320 B CN 112103320B CN 202011001359 A CN202011001359 A CN 202011001359A CN 112103320 B CN112103320 B CN 112103320B
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Classifications
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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
- H10K59/50—OLEDs integrated with light modulating elements, e.g. with electrochromic elements, photochromic elements or liquid crystal elements
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B29/00—Combinations of cameras, projectors or photographic printing apparatus with non-photographic non-optical apparatus, e.g. clocks or weapons; Cameras having the shape of other objects
-
- 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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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electroluminescent Light Sources (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The present disclosure provides a display panel and a display apparatus, the display panel including a display substrate and a light control element, the display substrate having a first light transmitting region and a second region adjacent to the first light transmitting region, the first light transmitting region having a light transmittance greater than that of the second region, the display substrate including a plurality of light emitting devices, the light control element being located on a light emitting side of the display substrate, and in the second region, the light control element being configured such that light emitted by the light emitting devices is converged toward the first light transmitting region. The light control element can improve the display function of the first light transmission area.
Description
Technical Field
At least one embodiment of the present disclosure relates to the field of display technology, and in particular, to a display panel and a display device.
Background
With the development and progress of society, electronic display products are increasingly used, and users have increasingly high requirements on display effects of the electronic display products. Currently, an image capturing device is generally disposed in an electronic display product to have more auxiliary functions. Under this need, the under-screen camera technology stands out for enabling screen displays with high duty cycles. However, it is difficult to achieve a high light transmittance design while having a display function in an imaging area for an electronic device using the current under-screen camera technology.
Disclosure of Invention
In view of the above, embodiments of the present disclosure provide a display panel and a display device, which can solve the above-mentioned technical problems.
Embodiments of the present disclosure provide a display panel including a display substrate and a light control element. The display substrate has a first light-transmitting region and a second region adjacent to the first light-transmitting region, the first light-transmitting region having a light transmittance greater than that of the second region, and the display substrate includes a plurality of light-emitting devices. The light control element is positioned on the light emitting side of the display substrate. In the second region, the light control element is configured to concentrate light emitted from the light emitting device toward the first light transmitting region.
The light control element may guide light emitted from the light emitting device around the first light transmission region to the first light transmission region, so that the first light transmission region has a display function or a display effect (e.g., resolution) of the first light transmission region is improved. In this way, the display effect of the first light-transmitting region is improved irrespective of the structure of the first light-transmitting region, and the first light-transmitting region can have high light transmittance while realizing display of a high-resolution image.
For example, in the display panel provided by the embodiments of the present disclosure, the light control element includes a first light transmissive structure and a second light transmissive structure. The first light-transmitting structure is provided with a groove, and at least part of the side wall of the groove is an inclined surface. The second light-transmitting structure fills the groove. The refractive index of the first light-transmitting structure is different from that of the second light-transmitting structure, and the orthographic projection of the groove on the plane of the display substrate is overlapped with at least part of the orthographic projection of the first light-transmitting area on the plane of the display substrate.
The refractive index of the medium on two sides of the inclined plane is different, and the light emitted by the light emitting device cannot vertically enter the inclined plane, namely, the light can be refracted when passing through the inclined plane, and the direction of the light is changed.
Further, the orthographic projection of the inclined plane on the plane of the display substrate is located outside the orthographic projection of the first light-transmitting area on the plane of the display substrate. Therefore, the side wall of the groove can not enable external light rays (light rays for shooting) passing through the first light transmission area to be refracted, and the shooting quality is guaranteed.
For example, in the display panel provided by the embodiment of the present disclosure, the inclined surface is disposed such that a width of an end of the groove facing the display substrate is smaller or larger than a width of an end facing away from the display substrate, and a refractive index of the first light transmitting structure is smaller than a refractive index of the second light transmitting structure.
For example, in the display panel provided by the embodiments of the present disclosure, the inclined plane includes a plane; and/or the bevel comprises a curved surface. Further, the plane is arranged to include a plurality of sub-planes which are connected in sequence and whose inclination increases or decreases in sequence.
For example, in the display panel provided by the embodiment of the present disclosure, at least one of the first light transmitting structure and the second light transmitting structure is an integrated structure; or at least one of the first light-transmitting structure and the second light-transmitting structure is a laminate composed of a plurality of film layers. Further, in the case where at least one of the first light-transmitting structure and the second light-transmitting structure is a laminate composed of a plurality of film layers, the refractive indices of the respective film layers are different.
For example, in the display panel provided by the embodiment of the present disclosure, in the case where the inclined surface is disposed such that the width of the end of the groove facing the display substrate is smaller than the width of the end facing away from the display substrate, the first light-transmitting structure is disposed to include a plurality of first film layers, the refractive indexes of which sequentially increase from the display substrate to the light control element; and/or the second light-transmitting structure is arranged to comprise a plurality of second film layers, and the refractive indexes of the plurality of second film layers are sequentially reduced in the direction from the display substrate to the light control element.
For example, in the display panel provided by the embodiment of the present disclosure, in the case where the inclined surface is disposed such that the width of the end of the groove facing the display substrate is greater than the width of the end facing away from the display substrate, the first light-transmitting structure is disposed to include a plurality of first film layers, the refractive indexes of which sequentially decrease in a direction from the display substrate to the light control element; and/or the second light-transmitting structure is arranged to comprise a plurality of second film layers, and the refractive indexes of the plurality of second film layers are sequentially increased from the display substrate to the light control element.
For example, in the display panel provided in the embodiment of the present disclosure, the arrangement density of the light emitting devices located within the orthographic projection of the inclined plane on the plane of the display substrate is greater than that of the light emitting devices of the other regions.
The light emitted by a part of the light emitting devices in the area where the inclined plane is positioned is emitted out of the display panel from the first light transmission area, and the number of the light emitting devices in the first light transmission area can be increased by increasing the arrangement density of the light emitting devices in the area, so that the resolution of a display image in the first light transmission area is improved; on the other hand, it is advantageous that each region of the display region can emit light uniformly (for example, in the case of full white display), and contrast of the display image is improved.
For example, in the display panel provided by the embodiments of the present disclosure, the light control element is configured as an organic encapsulation layer; or the display panel comprises an encapsulation layer, and the light control element is positioned on one side of the encapsulation layer, which is away from the display substrate.
Under the condition that the light control element is configured as an organic packaging layer, compared with the current display panel, the thickness of the display panel cannot be increased by arranging the light control element, and the light and thin design of the display panel is facilitated.
Embodiments of the present disclosure provide a display device including a camera and a display panel as in the above embodiments, wherein an orthographic projection of the camera on the display panel at least partially overlaps with a first light-transmitting region.
In the display panel and the display device provided by the embodiments of the present disclosure, the light control element may guide the light emitted from the light emitting device around the first light transmission region to the first light transmission region, so that the first light transmission region has a display function or a display effect (e.g., resolution) of the first light transmission region is improved.
Drawings
Fig. 1 is a schematic plan view of a display panel according to an embodiment of the disclosure;
FIG. 2 is a cross-sectional view of the display panel shown in FIG. 1 along line M-N;
FIG. 3 is a schematic cross-sectional view of a partial area of a display panel according to an embodiment of the disclosure;
FIG. 4 is a schematic cross-sectional view of a partial area of a display panel according to an embodiment of the disclosure;
FIG. 5 is a schematic cross-sectional view of a partial area of a display panel according to an embodiment of the disclosure;
FIG. 6 is a schematic cross-sectional view of a partial area of a display panel according to an embodiment of the disclosure;
FIG. 7 is a schematic cross-sectional view of a partial area of a display panel according to an embodiment of the disclosure;
FIG. 8 is a schematic cross-sectional view of a partial area of a display panel according to an embodiment of the disclosure;
Fig. 9 is a schematic structural diagram of a display device according to an embodiment of the disclosure.
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 be within the scope of the invention.
In a display panel adopting the under-screen camera technology, in a camera shooting area corresponding to a camera, the light transmittance can be improved by not setting pixels or by reducing the pixel density, increasing the pixel spacing and the like, so that the camera shooting quality is ensured, but in this case, the camera shooting area can lose a display function or only display low-resolution images, otherwise, if the pixels are arranged in the camera shooting area or the display function is improved by increasing the pixel density, reducing the pixel spacing and the like, the light transmittance of the camera shooting area can be reduced, so that the camera shooting quality is reduced.
Embodiments of the present disclosure provide a display panel and a display device, which can solve the above technical problems. The display panel includes a display substrate and a light control element. The display substrate has a first light-transmitting region and a second region adjacent to the first light-transmitting region, the first light-transmitting region having a light transmittance greater than that of the second region, and the display substrate includes a plurality of light-emitting devices. The light control element is positioned on the light emitting side of the display substrate. In the second region, the light control element is configured to concentrate light emitted from the light emitting device toward the first light transmitting region. The light control element may guide light emitted from the light emitting device around the first light transmission region to the first light transmission region, so that the first light transmission region has a display function or a display effect (e.g., resolution) of the first light transmission region is improved. In this way, the display effect of the first light-transmitting region is improved irrespective of the structure of the first light-transmitting region, and the first light-transmitting region can have high light transmittance while realizing display of a high-resolution image.
It should be noted that, in the embodiment of the present disclosure, the display substrate may include a display array layer, where the display array layer includes light emitting devices arranged in an array.
Hereinafter, a display panel and a display device according to at least one embodiment of the present disclosure will be described in detail with reference to the accompanying drawings. In these drawings, a space rectangular coordinate system is established with reference to a plane of the display substrate (a plane of the display panel) to describe the positions of the respective structures in the display panel. In the rectangular space coordinate system, the X axis and the Y axis are parallel to the plane of the display substrate, and the Z axis is perpendicular to the plane of the display substrate.
As shown in fig. 1 and 2, the display panel 10 includes a display substrate (the display array layer 100 included therein is shown in fig. 1 and 2) and a light control element 200. The display array layer 100 includes a plurality of light emitting devices 110. The light control element 200 is located on the light emitting side of the display array layer 100. The display substrate includes a display region 11, the display region 11 includes a first light-transmitting region 12 and a second region 13 adjacent to the first light-transmitting region 12, and in the second region 13, the light control element 200 is disposed such that light emitted from the light emitting device 110 is converged toward the first light-transmitting region 12. Thus, at least part of the light emitted by the light emitting device 110 in the first light-transmitting region 12 may enter the first light-transmitting region 12 and then exit the display panel, and for the human eye, the part of the light comes from the first light-transmitting region 12. In this way, even if the light emitting device 110 is not provided in the first light transmitting region 12, the first light transmitting region 12 of the display panel 10 has a display function for human eyes.
In the embodiment of the present disclosure, as shown in fig. 2, if light emitted from the light emitting device 110 outside the first light transmitting region 12 exits through the first light transmitting region 12 and then enters the human eye, the position of the light emitting device 110 is projected to the first light transmitting region 12 for the human eye, and herein, the light emitting device 110 observed by the human eye is set as a "dummy light emitting device".
It should be noted that, in the embodiment of the present disclosure, the position of the first light-transmitting area in the display area is not limited, and the first light-transmitting area may be near the edge of the display area, or directly located at the edge of the display area, or may be located in the middle of the display area or other positions as shown in fig. 1.
For example, in the display panel provided by the embodiments of the present disclosure, the light control element includes a first light transmissive structure and a second light transmissive structure. The first light-transmitting structure is provided with a groove, and at least part of the side wall of the groove is an inclined surface. The second light-transmitting structure fills the groove. The refractive index of the first light-transmitting structure is different from that of the second light-transmitting structure, and the orthographic projection of the groove on the plane of the display substrate is overlapped with at least part of the orthographic projection of the first light-transmitting area on the plane of the display substrate. Therefore, the refractive indexes of the mediums on two sides of the inclined plane are different, light rays emitted by the light-emitting device cannot perpendicularly enter the inclined plane, namely, the light rays can be refracted when passing through the inclined plane, and the direction of the light rays is changed.
Illustratively, as shown in FIG. 3, the light control element 200 includes a first light transmissive structure 210 and a second light transmissive structure 220, the first light transmissive structure 210 being provided with grooves 2110, the sidewalls of the grooves 2110 being sloped, the second light transmissive structure 220 filling the grooves 2110 so as to cover the sidewalls of the grooves 2110. The refractive index of the first light transmitting structure 210 is different from the refractive index of the second light transmitting structure 220.
For example, as shown in FIG. 3, the front projection of first light transmitting region 12 onto the plane of display array layer 200 is within the front projection of groove 2110 onto the plane of display array layer 100, such that groove 2110 may correspond to first light transmitting region 12. For example, further, the front projection of the sidewall of the groove 2110 on the plane of the display array layer 100 is located outside the front projection of the first light-transmitting area 12 on the plane of the display array layer 100, so that the sidewall (inclined plane) of the groove 2110 does not refract the external light for photographing, and the quality of photographing is ensured.
In the embodiments of the present disclosure, the "inclined plane" means an "inclined plane", which may be a plane or a curved surface, and the "inclined plane" is a plane (plane of the display substrate) of the display panel. For example, taking the inclined plane as an example, the larger the inclination of the plane, the more inclined the plane is to be perpendicular to the plane of the display substrate, whereas the smaller the inclination of the plane, the more inclined the plane is to be parallel to the plane of the display substrate.
For example, in the display panel provided by the embodiment of the present disclosure, the inclined surface is disposed such that a width of an end of the groove facing the display substrate is smaller or larger than a width of an end facing away from the display substrate, and a refractive index of the first light transmitting structure is smaller than a refractive index of the second light transmitting structure.
Illustratively, as shown in FIG. 3, the width of the end of groove 2110 facing the display substrate (e.g., which includes display array layer 100) is smaller than the width of the end of groove 2110 facing away from display array layer 100. Thus, in the case where the refractive index of the first light transmitting structure 210 is smaller than that of the second light transmitting structure 220, the light emitted from the light emitting device 110 enters the optically dense medium from the optically sparse medium while passing through the inclined surface of the groove 2110, and the refraction angle is smaller than the incident angle, so that the refracted light is directed to the first light transmitting region 12.
Illustratively, as shown in FIG. 4, the width of the end of groove 2110a facing display array layer 100 is greater than the width of the end of groove 2110a facing away from display array layer 100. Thus, in the case where the refractive index of the first light transmitting structure 210a is smaller than that of the second light transmitting structure 220a, the light emitted from the light emitting device 110 passes through the inclined surface of the groove 2110a to enter the light guiding medium from the light sealing medium, and the refraction angle is larger than the incident angle, so that the refracted light is directed to the first light transmitting region 12.
For example, in the display panel provided by the embodiments of the present disclosure, the side wall (inclined surface) of the groove may be provided as a plane, or may be provided as a curved surface, or may be provided to include both a plane and a curved surface. In the case where the inclined surface is a plane, the structure of the display panel may be referred to fig. 3, 4 and 6, and in the case where the inclined surface is a curved surface, the structure of the display panel may be referred to fig. 5. Next, the structure of the display panel will be described in the case where the inclined surfaces of the grooves are a flat surface and a curved surface, respectively.
As shown in fig. 5, the inclined surface (side wall) of the groove 2110b is curved, so that the incident angle of the light emitted from the light emitting device 110 is different at different positions of the curved surface, and accordingly, the refraction angle is also different, that is, the direction of the emitted light is also different, thereby facilitating adjustment of the position of each dummy light emitting device. Compared with the case where the inclined surface is planar (irrespective of the case where the first light transmitting structure and/or the second light transmitting structure is composed of a plurality of film layers having different refractive indexes in the embodiment described below), the pitch of the light emitting device 110 and the pitch of the corresponding dummy light emitting device corresponding to the inclined surface of the curved surface shape may be unequal, which is advantageous in that the dummy light emitting devices in the first light transmitting region 12 and the second region 13 are uniformly arranged, and the size of the second region 13 may not be limited.
For example, in one example of the present disclosure, as shown in fig. 5, in the case where the slope (side wall) of the groove 2110b is a curved surface, and the slope is such that the width of the end of the groove 2110b facing the display array layer 100 is smaller than the width of the end of the groove 2110b facing away from the display array layer display substrate 100, the curved surface is recessed toward the second light transmitting structure 220b side, i.e., the side wall of the groove 2110b is rendered convex.
For example, in another example of the present disclosure, in a case where the inclined surface (side wall) of the groove is a curved surface, and the inclined surface makes the width of the end of the groove facing the display substrate larger than the width of the end of the groove facing away from the display substrate, the curved surface is recessed toward the second light transmitting structure side, i.e., the side wall of the groove also appears convex.
In the embodiments of the present disclosure, the specific shape of the curved surface is not limited, as long as it can meet the requirements in the foregoing embodiments. For example, in some embodiments of the present disclosure, the curved surface is provided as a smooth surface, as shown in fig. 6. For example, the smooth surface may be an arc surface, or may be a part of an ellipsoidal surface, a paraboloid surface, or the like.
For example, in other embodiments of the present disclosure, the bevel is provided as a plane, and the plane includes a plurality of sub-planes that are sequentially connected and sequentially increase or decrease in inclination. Illustratively, as shown in FIG. 6, the side wall (inclined surface) of the recess 2110c is constituted by a plurality of sub-planes which are sequentially connected, and the boundaries of these sub-planes are defined by imaginary lines L1-L4, respectively. For example, each sub-plane corresponds to at least one light emitting device 110, i.e., the orthographic projection of each sub-plane onto the plane of the display array layer 100 covers at least one light emitting device 110. In this way, for each light emitting device 110, the refraction direction of the emergent light passing through the inclined plane is the same, so that the light is precisely projected at the position of the corresponding dummy light emitting device, which is beneficial to improving the definition of the display image.
For example, in the case where the side wall (inclined surface) of the groove is provided to include a plurality of sub-planes connected in sequence, if the inclined surface makes the width of the end of the groove facing the display substrate smaller than the width of the end of the groove facing away from the display substrate, the degree of inclination of the plurality of sub-planes decreases in sequence from the side of the light control element facing the display substrate to the side facing away from the display substrate; if the inclined surface makes the width of the end of the groove facing the display substrate larger than the width of the end of the groove facing away from the display substrate, the inclination degree of the plurality of sub-planes sequentially increases from the side of the light control element facing the display substrate to the side facing away from the display substrate.
In the embodiment of the present disclosure, the forming manner of the groove is not limited, and may be designed according to an actual process. For example, the sidewall shape of the groove may be defined by one film layer or a plurality of film layers stacked, and accordingly, the first light transmitting structure and the second light transmitting structure may be provided as an integrated structure or as a stack of a plurality of film layers stacked, respectively. In embodiments of the present disclosure, "integrated structure" means one or more structures formed from one film layer. For example, the first light transmitting structure provided as an integrated structure may be formed by patterning a single film layer.
For example, in the display panel provided in some embodiments of the present disclosure, at least one of the first light transmitting structure and the second light transmitting structure is an integrated structure. In this case, the groove may be formed by a one-time patterning process such as photolithography, hot embossing, or the like.
For example, in one example, as shown in fig. 4, a film layer may be deposited and a patterning process may be performed to form the second light transmitting structure 220a, the surface shape of the second light transmitting structure 220a defines the shape of the preformed groove, and then the film layer is deposited to form the first light transmitting structure 210a.
For example, in another example, as shown in FIG. 5, a patterning process may be performed by depositing a film layer to form first light-transmitting structure 210b having grooves 2110b, and then depositing a film layer to form second light-transmitting structure 220b, second light-transmitting structure 220b filling grooves 2110b.
For example, in other embodiments of the present disclosure, at least one of the first light transmissive structure and the second light transmissive structure is a laminate of a plurality of film layers. In this case, a patterning process may be performed on each film layer separately, so that sidewalls of the grooves are defined by stacking, which reduces difficulty of the patterning process.
For example, in one example, as shown in fig. 3, a plurality of film layers, which are demarcated by the dotted lines L1-L4, are sequentially formed, wherein a patterning process is performed on the previous film layer before the next film layer is formed, and the plurality of film layers form the first light transmitting structure 210 having the grooves 2110 after being subjected to the patterning process. Then, a film layer is deposited to form a second light transmitting structure 220, and the second light transmitting structure 220 fills the groove 2110, and the second light transmitting structure 220 may be an integrated structure or may be a laminate formed of a plurality of film layers.
For example, in another example, the second light-transmitting structure formed by sequentially stacking a plurality of film layers may be formed, wherein a patterning process is performed on a previous film layer before forming a next film layer, and the plurality of film layers define the shape of the groove to be formed after being subjected to the patterning process. Then, a film layer is deposited to form a first light-transmitting structure, and the first light-transmitting structure and the second light-transmitting structure are contacted to define a groove. The shape of the recess to be formed in this example can be seen in fig. 4.
For example, in at least one embodiment of the present disclosure, where the first light transmissive structure and/or the second light transmissive structure are provided as a stack of multiple film layers, the refractive indices of the respective film layers are different. In this way, the refractive index relationship (for example, refractive index difference) of the medium on both sides of the inclined surface (side wall) of the groove is different at different film layers, so that the position of each dummy light-emitting device can be further adjusted in the case that the shape and size of the groove are fixed.
For example, in one example of the present disclosure, referring back to fig. 3, the slope (sidewall) of the groove is a plane, and the first light-transmitting structure 210 is composed of a plurality of film layers demarcated by the dotted lines L1-L4, and the refractive indices of the plurality of film layers are different. In this way, even if the incident angle of the light emitted from the light emitting device 110 is the same, the refraction angle is different at a plurality of positions of the inclined plane corresponding to the respective film layers, so that it is advantageous to adjust the position of each dummy light emitting device. For example, in this example, further, the second light-transmitting structure 220 may also be configured of a plurality of film layers demarcated by the broken lines L1 to L4, or alternatively, only the second light-transmitting structure 220 may be configured of a plurality of film layers of different refractive indexes demarcated by the broken lines L1 to L4.
For example, in another example of the present disclosure, referring back to fig. 6, the slope (sidewall) of the groove is a plane, and the first light-transmitting structure 210c is composed of a plurality of film layers, which are demarcated by the dotted lines L1-L4, and the refractive indices of the plurality of film layers are different. In combination with the aforementioned embodiment in which the side wall (inclined surface) of groove 2110c is constituted by a plurality of sub-planes connected in sequence, the side wall of each film layer for defining groove 2110c serves as the sub-plane. In this way, it may be advantageous to further adjust the position of each dummy light emitting device.
For example, in the display panel provided by the embodiment of the present disclosure, in the case where the first light-transmitting structure and/or the second light-transmitting structure are configured of a plurality of film layers having different refractive indexes, if the inclined surface (sidewall) of the groove is set such that the width of one end of the groove facing the display substrate is smaller than the width of one end facing away from the display substrate, the plurality of film layers in the first light-transmitting structure are a plurality of first film layers, and the refractive indexes of the plurality of first film layers sequentially increase in the direction from the display substrate to the light control element; and/or the plurality of film layers in the second light-transmitting structure are a plurality of second film layers, and the refractive indexes of the plurality of second film layers are sequentially reduced from the display substrate to the light control element. In this embodiment, the inclined surface may be a plane surface, or may be a curved surface.
For example, in the display panel provided by the embodiment of the present disclosure, in the case where the first light-transmitting structure and/or the second light-transmitting structure are configured of a plurality of film layers having different refractive indexes, if the inclined surface (sidewall) of the groove is disposed such that the width of one end of the groove facing the display substrate is greater than the width of one end facing away from the display substrate, the plurality of film layers in the first light-transmitting structure are a plurality of first film layers, and the refractive indexes of the plurality of first film layers sequentially decrease in the direction from the display substrate to the light control element; and/or the plurality of film layers in the second light-transmitting structure are a plurality of second film layers, and the refractive indexes of the plurality of second film layers are sequentially increased from the display substrate to the light control element. In this embodiment, the inclined surface may be a plane surface, or may be a curved surface.
It should be noted that, in the embodiment of the present disclosure, the second light-transmitting structure may be fully or partially filled in the groove of the first light-transmitting structure, where the first light-transmitting structure is disposed to cover the second light-transmitting structure or the second light-transmitting structure is disposed to cover the first light-transmitting structure.
For example, in one example of the present disclosure, as shown in fig. 7, the slope (sidewall) of the groove 2110d is provided such that the width of an end of the groove 2110d facing toward the display substrate (e.g., the display array layer 100 included therein) is greater than the width of an end facing away from the display array layer 100, in which case the first light transmitting structure 210d having the groove 2110d may be formed first and then the second light transmitting structure 220d covering the first light transmitting structure 210d may be formed, a portion of the second light transmitting structure 220d filling the groove 2110d, the second light transmitting structure 220d serving as a flat layer to improve the flatness of the display panel.
For example, in another example of the present disclosure, the inclined surface (sidewall) of the groove is provided such that the width of the end of the groove facing the display substrate is smaller than the width of the end facing away from the display substrate, in which case the second light transmitting structure may be formed first, and then the first light transmitting structure covering the second light transmitting structure may be formed, the first light transmitting structure functioning as a flat layer to improve the flatness of the display panel.
For example, in the display panel provided in the embodiment of the present disclosure, the arrangement density of the light emitting devices located within the orthographic projection of the inclined plane on the plane of the display substrate is greater than that of the light emitting devices of the other regions. The light emitted by a part of the light emitting devices in the area (the second area 13 in the previous embodiment) where the inclined plane is located is emitted out of the display panel from the first light transmission area, and by increasing the arrangement density of the light emitting devices in the area, on one hand, the number of light emitting devices in which the emitted light can be emitted into the first light transmission area can be increased, so that the resolution of the display image of the first light transmission area is improved; on the other hand, it is advantageous that each region of the display region can emit light uniformly (for example, in the case of full white display), and contrast of the display image is improved.
Note that, in the embodiment of the present disclosure, the first light-transmitting region may not be provided with a light-emitting device; alternatively, the light emitting devices may be disposed, but the arrangement density of the light emitting devices of the first light transmitting region is greater than that of the light emitting devices of the other regions, and the pitch of the light emitting devices of the first light transmitting region is greater than that of the light emitting devices of the other regions. Thus, the first light-transmitting region of the display panel may have good light transmittance.
In the embodiments of the present disclosure, the light control elements may be provided separately or may be obtained by modifying the structure in the display panel. For example, an encapsulation layer may be provided in the display panel to encapsulate the light emitting device or the like, and thus, the light control element may be formed on the encapsulation layer or the encapsulation layer (or a specific film layer included therein) may be modified to include the light control element.
For example, in one example of the present disclosure, as shown in fig. 8, the light control element 200 is configured as an organic encapsulation layer. For example, the display panel may further include a first inorganic encapsulation layer 300 and a second inorganic encapsulation layer 400, and the light control element 200 is positioned between the first inorganic encapsulation layer 300 and the second inorganic encapsulation layer 400. The first inorganic encapsulation layer 300, the second inorganic encapsulation layer 400, and the second inorganic encapsulation layer 400 constitute an encapsulation layer 500. Therefore, the scheme of arranging the light control element can not increase the thickness of the display panel, and is favorable for the light and thin design of the display panel.
For example, the materials of the first inorganic encapsulation layer 300 and the second inorganic encapsulation layer 400 are silicon nitride, silicon oxide, silicon oxynitride, etc., and the compactness of the inorganic materials is high, so that intrusion of water, oxygen, etc. can be prevented; for example, the material of the light control element 200 (organic encapsulation layer) may be a polymer material containing a desiccant or a polymer material blocking moisture, for example, a polymer resin or the like to planarize the surface of the display substrate, and may relieve the stress of the first and second inorganic encapsulation layers 300 and 400, and may further include a water absorbing material such as a desiccant to absorb substances such as water, oxygen, and the like that intrude into the inside.
For example, in another example of the present disclosure, the encapsulation layer is located between the display substrate and the light control element. For example, the display panel may further include a structure formed on the encapsulation layer, such as a touch structure, etc., in which the light control element may be integrated. For example, the display panel may include a package cover, and the light control member may be formed on the package cover to be mounted on the display panel in a bonding process of the package cover.
In the embodiments of the present disclosure, the specific structure of the display substrate and other elements included in the display panel is not limited, and may be designed as needed.
For example, in an embodiment of the present disclosure, as shown in fig. 8, the display substrate 100 includes a light emitting device 110 and a pixel defining layer 120. For example, a plurality of openings in which the light emitting devices 110 are located are formed in the pixel defining layer 120.
For example, the light emitting device 110 may include an anode, a light emitting functional layer, and a cathode sequentially stacked, for example, anodes of a plurality of sub-pixels are spaced apart from each other and arranged in an array. The light emitting functional layer may include a hole injection layer, a hole transport layer, an organic light emitting layer, an electron transport layer, an electron injection layer, and the like, and may further include a hole blocking layer, an electron blocking layer, and the like, for example.
For example, in an embodiment of the present disclosure, as shown in fig. 8, the display substrate further includes a base 600 and a driving circuit layer 700 on the base 600. For example, the driving circuit layer 700 may include a pixel driving circuit including a plurality of transistors, capacitors, and the like, for example, formed in various forms such as 2T1C (i.e., 2 transistors (T) and 1 capacitor (C)), 3T1C, or 7T 1C. The pixel driving circuit is configured to control the light emitting device to emit light according to a scan signal applied to the gate line, a display data signal applied to the data line, and a power supply voltage supplied from the power supply line, thereby realizing image display.
Embodiments of the present disclosure provide a display device including a camera and a display panel as in the above embodiments. As shown in fig. 9, the camera 800 is located on the back side (the side away from the display side) of the display panel, and the front projection of the camera 800 on the display panel at least partially overlaps the first light-transmitting region 12.
For example, the image capturing device 800 is fixed to the back side of the display panel (for example, the side of the display substrate facing away from the light controlling element) by means of double sided tape or the like. The camera 800 and the first light-transmitting region 12 of the display panel overlap each other in a direction perpendicular to the display panel to receive ambient light incident through the first light-transmitting region 12 of the display substrate, and sense the ambient light to image. For example, the camera 800 includes an image sensor (fabricated as an IC chip), and the image sensor 800, for example, a Complementary Metal Oxide Semiconductor (CMOS) or Charge Coupled Device (CCD), for example, includes an array of imaging sub-pixels arranged in an array. Embodiments of the present disclosure are not limited in the type and configuration of camera 800.
For example, in the display device provided in at least one embodiment of the present disclosure, a light splitting element (e.g., a light splitting grating, etc.) may be further disposed on the display side of the display panel, so that the display panel may have a three-dimensional display function.
For example, the display device in the embodiments of the present disclosure may be any product or component having a display function, such as a television, a digital camera, a mobile phone, a watch, a tablet computer, a notebook computer, a navigator, and the like.
For clarity, not all the structures of the display device described above are described. To achieve the necessary functions of the display panel, those skilled in the art may set other structures according to a specific application scenario, and the embodiments of the present disclosure are not limited thereto.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is to be construed as including any modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (8)
1. A display panel, comprising:
A display substrate having a first light-transmitting region and a second region adjacent to the first light-transmitting region, the first light-transmitting region having a light transmittance greater than a light transmittance of the second region, the display substrate including a plurality of light-emitting devices;
The light control element is positioned on the light emitting side of the display substrate;
wherein, in the second area, the light control element is arranged to make the light emitted by the light emitting device converge toward the first light transmission area;
wherein the light control element comprises:
the first light-transmitting structure is provided with a groove, and at least part of the side wall of the groove is an inclined plane;
A second light-transmitting structure filling the groove;
Wherein the refractive index of the first light-transmitting structure is different from that of the second light-transmitting structure, the orthographic projection of the groove on the plane of the display substrate is overlapped with at least part of the orthographic projection of the first light-transmitting area on the plane of the display substrate,
The orthographic projection of the inclined plane on the plane of the display substrate is positioned outside the orthographic projection of the first light-transmitting area on the plane of the display substrate;
Wherein the inclined surface is arranged such that a width of an end of the groove facing the display substrate is larger than a width of an end facing away from the display substrate,
The refractive index of the first light-transmitting structure is smaller than that of the second light-transmitting structure.
2. The display panel of claim 1, wherein,
The inclined plane comprises a plane, and the plane is arranged to comprise a plurality of sub-planes which are sequentially connected and the inclination degree of which is sequentially increased or decreased; and/or
The inclined surface includes a curved surface.
3. The display panel of claim 1, wherein,
At least one of the first light-transmitting structure and the second light-transmitting structure is a laminate composed of a plurality of film layers.
4. A display panel according to claim 3, wherein the refractive index of each of the plurality of film layers is different.
5. The display panel according to claim 2, wherein in a case where the inclined surface is provided such that a width of an end of the groove facing the display substrate is larger than a width of an end facing away from the display substrate,
The first light-transmitting structure comprises a plurality of first film layers, and the refractive indexes of the first film layers are sequentially reduced from the display substrate to the light control element; and/or
The second light-transmitting structure is arranged to comprise a plurality of second film layers, and the refractive indexes of the plurality of second film layers are sequentially increased from the display substrate to the direction of the light control element.
6. The display panel according to any one of claims 1-5, wherein,
The arrangement density of the light emitting devices in the orthographic projection of the inclined plane on the plane of the display substrate is larger than that of the light emitting devices in other areas.
7. The display panel according to any one of claims 1-5, wherein,
The light control element is configured as an organic encapsulation layer; or alternatively
The display panel comprises an encapsulation layer, and the light control element is positioned on one side of the encapsulation layer, which is away from the display substrate.
8. A display device comprising a camera and the display panel according to any one of claims 1 to 7, wherein,
The orthographic projection of the camera on the display panel is at least partially overlapped with the first light-transmitting area.
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