CN111161643B - Display panel and display device - Google Patents
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- CN111161643B CN111161643B CN202010005497.1A CN202010005497A CN111161643B CN 111161643 B CN111161643 B CN 111161643B CN 202010005497 A CN202010005497 A CN 202010005497A CN 111161643 B CN111161643 B CN 111161643B
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Abstract
The invention provides a display panel and a display device, relates to the technical field of display, and aims to improve the brightness uniformity of the display panel at the position where an imaging module is arranged and the position where the imaging module is not arranged during display on the basis of improving the light transmittance of the display panel at the position where the imaging module is arranged, and ensure the service life of sub-pixels at the position where the imaging module is arranged in the display panel. The display panel includes: the display device comprises a first display area and a second display area, wherein the first display area at least partially surrounds the second display area; the first display area and the second display area respectively comprise a plurality of sub-pixels, and the density of the sub-pixels in the first display area is greater than that of the sub-pixels in the second display area; the sub-pixels comprise light-emitting structures, and the display panel further comprises light-shielding structures positioned on the light-emitting sides of the display panel; the shading structure comprises a first shading structure positioned in the first display area; the first light shielding structure partially overlaps the light emitting structure located in the first display region along a normal direction of the display panel.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of display, in particular to a display panel and a display device.
[ background of the invention ]
With the increasing demand of users for diversified use of display devices and the emergence of design requirements for high screen occupation ratio of display devices, there is currently a design of an off-screen camera, that is, a design of embedding an imaging module such as a camera in a display area to reduce the size of a frame area of a display device. However, the design of the camera under the screen is adopted, and on the basis of improving the screen occupation ratio of the display device, higher requirements are provided for the light transmittance at the position where the imaging module is arranged in the display panel, and on the basis, the problem of the brightness uniformity when the position where the imaging module is arranged in the display panel and the position where the imaging module is not arranged are in display is also urgently to be solved.
[ summary of the invention ]
In view of the above, embodiments of the present invention provide a display panel and a display apparatus, so as to improve the uniformity of the brightness of the display panel at the position where the imaging module is disposed and the position where the imaging module is not disposed on the basis of increasing the transmittance of the display panel at the position where the imaging module is disposed, and ensure the lifetime of the sub-pixels at the position where the imaging module is disposed in the display panel.
In one aspect, an embodiment of the present invention provides a display panel, including: a first display area and a second display area, the first display area at least partially surrounding the second display area; and the first display region and the second display region each include a plurality of sub-pixels, and,
the density of the sub-pixels in the first display area is greater than the density of the sub-pixels in the second display area;
the sub-pixels comprise light emitting structures, and the display panel further comprises light shielding structures positioned on the light emitting sides of the display panel; the shading structure comprises a first shading structure positioned in the first display area; the first light shielding structure is partially overlapped with the light emitting structure located in the first display area along a normal direction of the display panel.
In another aspect, an embodiment of the present invention provides a display device, including the display panel described above.
According to the display panel and the display device provided by the embodiment of the invention, the first light shielding structure is arranged in the first display area of the display panel, and the first light shielding structure is partially overlapped with the light emitting structure positioned in the first display area along the normal direction of the display panel, so that part of light emitted by the light emitting structure positioned in the first display area is shielded by the first light shielding structure, the transmittance of light emitted by the first display area in the display panel is reduced, and the brightness of the first display area is further reduced. Therefore, for the sub-pixels of the second display area with smaller sub-pixel density, on the basis of ensuring the uniform brightness of the first display area and the second display area, the current density of the sub-pixels in the second display area can be properly reduced, so that the difference of the current density of the first display area and the second display area caused by the density difference of the sub-pixels can be compensated to a certain extent, and the service life of the sub-pixels in the second display area can be prolonged.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic top view of a display panel in the prior art;
fig. 2 is a schematic top view of a display panel according to an embodiment of the invention;
FIG. 3 is an enlarged view of region Q of FIG. 2;
FIG. 4 is a schematic cross-sectional view along BB' of FIG. 3;
fig. 5 is a schematic top view illustrating a second light shielding structure according to an embodiment of the invention;
fig. 6 is a schematic top view illustrating another second light shielding structure according to an embodiment of the present invention;
fig. 7 is a schematic top view illustrating a second light shielding structure according to an embodiment of the invention;
fig. 8 is a schematic top view illustrating a second light shielding structure according to an embodiment of the present invention;
FIG. 9 is a schematic top view of another display panel according to an embodiment of the present invention;
FIG. 10 is a schematic cross-sectional view of another display panel provided in accordance with an embodiment of the present invention;
FIG. 11 is a schematic cross-sectional view of another display panel according to an embodiment of the invention;
FIG. 12 is a schematic cross-sectional view of another display panel according to an embodiment of the invention;
fig. 13 is a schematic diagram of a display device according to an embodiment of the invention.
[ detailed description ] embodiments
For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.
It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It should be understood that although the terms first, second, etc. may be used to describe display regions in embodiments of the present invention, these display regions should not be limited by these terms. These terms are only used to distinguish the various display regions from each other. For example, the first display area may also be referred to as the second display area, and similarly, the second display area may also be referred to as the first display area without departing from the scope of embodiments of the present invention.
For a display panel designed by adopting a camera under a screen, in order to ensure the light transmittance of a region in which the camera is placed in the display panel, the pixel density of the region is generally reduced, so that the pixel density of the region in which the camera is placed is smaller than the pixel density of a surrounding region in which the camera is not placed. As shown in fig. 1, fig. 1 is a schematic top view of a display panel in the prior art, wherein a first display area 1 'is an area where a camera is placed, and a second display area 2' is an area where a camera is not placed. The pixel density of the first display region 1 'is less than the pixel density of the second display region 2'. In the process of implementing the present invention, the inventors studied and found that, when the display panel shown in fig. 1 is used for displaying, in order to ensure uniformity of luminance at different positions in the display region (where luminance is the luminous intensity of the luminous body per unit projection area, luminance of the first display region is the ratio of the sum of the luminous intensities of the pixels in the first display region to the area of the first display region, and luminance of the second display region is the ratio of the sum of the luminous intensities of the pixels in the second display region to the area of the second display region), it is necessary to increase the current density of the pixels located in the first display region 1 ' during operation, so as to increase the luminance of the first display region 1 ' by increasing the luminous intensity of the pixels in the first display region 1 '. However, in this way, the pixels in the first display region 1' will be aged and yellowed more quickly, and the lifetime will be affected. But also the display of the first display area 1' may show significant ghosting problems.
In view of the above, an embodiment of the present invention provides a display panel, as shown in fig. 2 and fig. 3, fig. 2 is a schematic top view of the display panel provided by the embodiment of the present invention, fig. 3 is an enlarged schematic view of an area Q in fig. 2, the display panel 100 includes a first display area AA1 and a second display area AA2, and the first display area AA1 at least partially surrounds the second display area AA 2. Each of the first and second display areas AA1 and AA2 includes a plurality of sub-pixels 1. The density of the sub-pixels 1 located in the first display area AA1 is greater than that of the sub-pixels 1 located in the second display area AA2, wherein the density of the sub-pixels is the number of sub-pixels possessed by a unit area of the display panel.
Fig. 4 is a schematic cross-sectional view along BB' of fig. 3, as shown in fig. 4, wherein the sub-pixel 1 comprises a light-emitting structure 10. As shown in fig. 3 and 4, the display panel 100 further includes a light shielding structure 2 located on the light emitting side of the display panel 100. The light shielding structure 2 includes a first light shielding structure 21 located in the first display area AA 1. The first light blocking structure 21 partially overlaps the light emitting structure 10 located in the first display area AA1 along a normal direction of the display panel.
When the display panel displays, part of the light emitted from the light emitting structure 10 in the first display area AA1 is blocked by the first light shielding structure 21, so that the transmittance of the light emitted from the first display area in the display panel is reduced, and the brightness of the first display area is further reduced. Therefore, for the second display area AA2 with a smaller sub-pixel density, on the basis of ensuring uniform brightness of the first display area AA1 and the second display area AA2, the current density of the sub-pixel 1 located in the second display area AA2 can be appropriately reduced, so that the difference of the current densities of the first display area AA1 and the second display area AA2 caused by the difference of the pixel densities can be compensated to a certain extent, and the service life of the sub-pixel 1 in the second display area AA2 can be prolonged.
Illustratively, the display panel may be a display panel employing a self-light emitting technology. For example, the display panel may be any one of an Organic Light-Emitting Diode (OLED) display panel, a Quantum Dot Light-Emitting Diode (QLED) display panel, or a Micro Light-Emitting Diode (Micro-LED) display panel. An organic light emitting layer in the OLED display panel, a quantum dot light emitting layer in the QLED display panel, and a Micro-LED device in the Micro-LED display panel may be used as the light emitting structure 10 of the sub-pixel 1.
For example, when full-color display of the display panel is realized, as shown in fig. 3 and 4, the sub-pixel 1 may be provided as a first sub-pixel 11, a second sub-pixel 12, and a third sub-pixel 13 having different colors. Accordingly, the light emitting structure 10 also includes at least structures emitting light of different colors corresponding to the first sub-pixel 11, the second sub-pixel 12, and the third sub-pixel 13, respectively. Moreover, taking the OLED display panel as an example, the areas of the light emitting structures corresponding to different colors may be set to be different according to the difference of the light emitting efficiency of the light emitting structures. Illustratively, as shown in fig. 4, the first sub-pixel 11 includes a light emitting structure 10 having an area larger than that of the light emitting structure 10 included in the second sub-pixel 12, and the second sub-pixel 12 includes a light emitting structure 10 having an area larger than that of the light emitting structure included in the third sub-pixel 13. For example, in the OLED display panel, the area of the light emitting structure emitting green light may be set to be the smallest, the area of the light emitting structure emitting blue light may be set to be the largest, and the area of the light emitting structure emitting red light may be set in the middle.
In the design process of the display panel, for the sub-pixels of the same color, the areas of the light emitting structures 10 located in the first display area AA1 and the second display area AA2 may be set to be the same, and the light emitting structure 10 of the sub-pixel 1 in the first display area AA1 is shielded by the first light shielding structure 21 to reduce the light intensity in the first display area AA1, so as to reduce the brightness of the first display area AA 1. In addition, by setting the areas of the light emitting structures 10 corresponding to the sub-pixels of the same color in the first display area AA1 and the second display area AA2 to be equal, it is not necessary to set the manufacturing conditions of the light emitting structures 10 in the first display area AA1 and the second display area AA2 differently, and the design difficulty of the display panel can be reduced. As shown in fig. 4, the first sub-pixel 11 located in the first display area AA1 and the first sub-pixel 11 located in the second display area AA2 have the same area of the light emitting structure 10. The second sub-pixel 12 located in the first display area AA1 and the second sub-pixel 12 located in the second display area AA2 have the same area of the light emitting structure 10. The third sub-pixel 13 located in the first display area AA1 and the third sub-pixel 13 located in the second display area AA2 have the same area of the light emitting structure 10.
Or, in the embodiment of the present invention, for the sub-pixels of the same color, taking the first sub-pixel 11 as an example, the embodiment of the present invention may further set the area of the light emitting structure 10 of the sub-pixel 1 in the first display area AA1 to be smaller, so that the orthographic projection area S1 of the light emitting structure 10 of the first sub-pixel 11 in the first display area AA1 on the plane of the display panel, and the orthographic projection area S2 of the light emitting structure 10 of the first sub-pixel 11 in the second display area AA2 on the plane of the display panel satisfy S1 ≦ S2, and combine with the setting of the first light shielding structure 21, on the basis of ensuring the uniformity of the brightness of the first display area AA1 and the second display area AA2, the brightness required to be achieved in the first display area AA1 and the second display area AA2 can be further reduced, thereby further reducing the current density of the sub-pixels in the second display area AA2 and extending the lifetime of the sub-pixels in the second display area AA 2.
As shown in fig. 3 and 4, the light shielding structure 2 further includes a second light shielding structure 22 located in the second display area AA 2; the second light blocking structure 22 does not overlap the light emitting structure 10 located in the second display area AA2 along the normal direction of the display panel. In the embodiment of the present invention, the second light shielding structure 22 is disposed in the second display area AA2, so that on one hand, ambient light reflected by a metal trace located between two adjacent sub-pixels in the second display area AA2 can be shielded. On the other hand, the crosstalk of light rays emitted from two adjacent sub-pixels with different colors can be avoided, and the display effect of the display panel is ensured. In addition, the second light shielding structure 22 in the second display area AA2 and the light emitting structure are not overlapped, so that the light in the second display area AA2 can be emitted normally, and the brightness of the second display area AA2 is prevented from being affected.
Exemplarily, as shown in fig. 5, fig. 5 is a schematic top view of a second light shielding structure according to an embodiment of the present invention, wherein the second light shielding structure 22 includes a plurality of open regions 222 and non-open regions 223, and an orthographic projection of the open regions 222 on a plane where the display panel is located covers the light emitting structure (not shown in fig. 5).
The non-opening area 223 of the second light shielding structure 22 includes a plurality of through holes 220, and the through holes 220 penetrate through the second light shielding structure 22 along the normal direction of the display panel, so that the external ambient light can shine on the imaging module, such as a camera, disposed corresponding to the second display area AA2 through the through holes 220, and the lighting effect of the imaging module is ensured.
Optionally, in any direction in the plane of the display panel, the width d of the through hole 220 is less than or equal to 50 μm, so as to avoid exposing non-light emitting structures such as metal wires located on the side of the second light shielding structure 22 away from the light exit side on the basis of improving the lighting effect of the imaging module, and ensure that the non-light emitting structures are invisible to human eyes.
Optionally, as shown in fig. 5, in the embodiment of the present invention, a plurality of microstructures 200 may be further disposed at an edge of the opening area 222 of the second light shielding structure 22, so that when the external ambient light is emitted to an imaging module, such as a camera, located in the second display area AA2 through the second light shielding structure 22, the external ambient light is prevented from being diffracted by passing through a regular edge of the opening area 222. That is to say, the arrangement of the microstructure 200 can destroy the diffraction condition, so that the possibility that diffraction spots with alternate light and dark are generated in the picture shot by the imaging module can be reduced, and the imaging effect is ensured.
For example, the shape of the microstructure 200 may be designed in various ways, for example, as shown in fig. 5, the microstructure 200 may be provided as a convex structure protruding to the side away from the opening area 222. The projection structure may be a circular arc projection as shown in fig. 5. Alternatively, as shown in fig. 6, fig. 6 is a schematic top view of another second light shielding structure provided in the embodiment of the present invention, and the protrusion structure may also be an acute-angled protrusion as shown in fig. 6. Alternatively, the projection structure may be provided as a combination of the above two. Alternatively, as shown in fig. 7, fig. 7 is a schematic top view of another second light shielding structure provided in the embodiment of the present invention, when the protrusion structure is provided, the protrusion structure may be further disposed to protrude toward the side close to the opening area 222. The convex structure may be in the shape of a circular arc or an acute angle.
Optionally, as shown in fig. 8, fig. 8 is a schematic top view of another second light shielding structure according to an embodiment of the present invention, wherein when the through holes 220 are disposed in the non-opening area 223, shapes of the through holes 220 may be designed to be different, so that on the basis of improving the light transmittance of the external ambient light emitted to the imaging module through the second light shielding structure 22, the external ambient light can be prevented from being diffracted when passing through the through holes.
As shown in fig. 9, fig. 9 is a schematic top view of another display panel according to an embodiment of the present invention, in which the first display area AA1 includes a first sub-display area AA11 and a second sub-display area AA12, and the second sub-display area AA12 is located on a side of the first sub-display area AA11 close to the second display area AA 2. That is, the second sub-display area AA12 at least partially surrounds the second display area AA 2. The first sub-display area AA11 at least partially surrounds the second sub-display area AA 12.
The second display area AA2 includes a third sub-display area AA21 and a fourth sub-display area AA22, and the third sub-display area AA21 is located at a side of the fourth sub-display area AA22 adjacent to the first display area AA 1.
Alternatively, as shown in fig. 4, along the normal direction of the display panel, an overlapping portion of the first light shielding structure 21 and the light emitting structure 10 of the first sub-pixel 11 is defined as a first overlapping portion 211.
As shown in fig. 10, fig. 10 is a schematic cross-sectional view of another display panel according to an embodiment of the present invention, wherein a width d of the first overlapping portion 211 in the first sub-display area AA11 along the first direction x is shown in fig. 10211Is greater than the width d of the first overlapping portion 211 in the second sub-display area AA12 along the first direction x211The first direction x is that the first display area AA1 points to the first directionThe orientation of the two display areas AA 2. As mentioned above, the second light shielding structure 21 is disposed to shield ambient light reflected by the metal traces between two adjacent sub-pixels in the display panel. Therefore, in the first direction x, on the basis that the width of the first light shielding structure 21 is larger than the width of the second light shielding structure 22, so that the first light shielding structure 21 at least partially overlaps the light emitting structure 10 located in the first display area AA1 to reduce the light emitting rate of the first display area AA1, the brightness of the reflected ambient light emitted from the first display area AA1 will be smaller than the brightness of the reflected ambient light emitted from the second display area AA 2. Based on this, the embodiment of the invention provides the width d of the first overlapping portion 211 in the first sub-display area AA11 of the first display area AA1 far from the second display area AA2 along the first direction x211And is greater than a width d of the first overlapping portion 211 in the second sub-display area AA12 of the first display area AA1 near the second display area AA2 side in the first direction x211The width of the light shielding structure between the first display area AA1 and the second display area AA2 can be gradually reduced, which is equivalent to forming a transition area between the two display areas for reflecting the brightness change of the ambient light, so that the brightness of the reflected ambient light emitted from the display panel can be smoothly transited between the two display areas, and the formation of a relatively obvious visual difference between the first display area AA1 and the second display area AA2 caused by the difference of the intensity of the reflected ambient light can be reduced or eliminated.
Illustratively, as shown in fig. 10, the second sub-display area AA12 includes a plurality of first overlapping portions 211, the plurality of first overlapping portions 211 are arranged along the first direction x, and the smaller the distance from the first overlapping portion 211 to the second display area AA2 is, the smaller the width d of the first overlapping portion 211 along the first direction x is211The smaller the difference, the more the first light shielding structure 21 gradually reduces the shielding effect of the reflected ambient light along the first direction x, and reduces or eliminates the formation of a more distinct visual difference between the first display area AA1 and the second display area AA2 due to the difference of the intensity of the reflected ambient light.
It should be noted that, in fig. 10, only the first sub-pixel 11 is shown for simplicity of illustration, and actually, the aforementioned second sub-pixel 12 and/or third sub-pixel 13 may also be disposed between two adjacent first sub-pixels 1.
As shown in fig. 11, fig. 11 is a schematic cross-sectional view of another display panel according to an embodiment of the present invention, in which the sub-pixel includes a second sub-pixel 12 and a third sub-pixel 13 adjacent to each other along a second direction, and the second direction y is a direction in which the second display area AA2 points to the first display area AA 1; the second light shielding structure 22 includes a second sub light shielding structure 221, and the second sub light shielding structure 221 is located between the second sub pixel 12 and the third sub pixel 13. As shown in fig. 11, the width d of the second sub light shielding structure 221 positioned at the third sub display area AA21 along the second direction y221Is greater than the width d of the second sub light shielding structure 221 positioned at the fourth sub display area AA22 in the second direction y221So that the brightness of the reflected ambient light emitted from the display panel smoothly transitions between the two display areas, and the formation of a relatively obvious visual difference between the first display area AA1 and the second display area AA2 due to the difference in the intensity of the reflected ambient light is reduced or eliminated.
As shown in fig. 11, the third sub-display area AA21 includes a plurality of second sub-light shielding structures 221, the second sub-light shielding structures 221 are arranged along the second direction y, and the smaller the distance from the second sub-light shielding structure 221 to the first display area AA1 is, the smaller the width d of the second sub-light shielding structure 221 along the second direction y is221The larger the brightness of the reflected ambient light emitted from the display panel, the more gradual the transition between the first display area AA1 and the second display area AA2 is, the less or no obvious visual difference is formed between the first display area AA1 and the second display area AA2 due to the difference in the intensity of the reflected ambient light.
Exemplarily, as shown in fig. 12, fig. 12 is a schematic cross-sectional view of another display panel according to an embodiment of the present invention, where the display panel further includes a color filter structure 3; the color filter structure 3 is located on the light-emitting side of the display panel, and the color filter structure 3 at least partially covers the light-emitting structure 10 of the sub-pixel 1. Illustratively, the color filter structure 3 and the light shielding structure are disposed in the same layer. Alternatively, the color of the color filter structure 3 is the same as the light emitting color of the light emitting structure of the covered sub-pixel 1. The arrangement of the color filter structure 3 can replace a polarizer, and the effect of weakening the emergence of reflected ambient light is achieved.
As shown in fig. 12, the color filter structure 3 includes a plurality of first color filter structures 31 located in the first display area AA1, and a plurality of second color filter structures 32 located in the second display area AA 2. The thickness of the first color filter structure 31 is greater than the thickness of the second color filter structure 32 along the normal direction of the display panel. Since the color filter structure 3 has a filtering function, the embodiment of the invention can also reduce the transmittance of the light emitted through the first display area AA1 and reduce the brightness of the first display area AA1 by increasing the thickness of the first color filter structure 31.
Illustratively, the light shielding structure comprises a black resin material, the process for manufacturing the light shielding structure by using the black resin is mature, and the patterning design of the light shielding structure is simpler and easier to implement.
As shown in fig. 12, the display panel further includes a transmittance reducing structure 4 located at the light-emitting side of the sub-pixels. The reduced-transmission structure 4 includes a first reduced-transmission structure 41 located at the first display area AA1, and a second reduced-transmission structure 42 located at the second display area AA 2; along the normal direction of the display panel, the first reduced-transmission structure 41 covers the sub-pixels located in the first display area AA1, and the second reduced-transmission structure 42 covers the sub-pixels located in the second display area AA 2; the light transmittance a1 of the first transmittance reducing structure 41 is smaller than the light transmittance a2 of the second transmittance reducing structure 42, so as to further reduce the light extraction rate of the first display area AA1, thereby reducing the brightness of the first display area AA1, and on the basis of ensuring the uniform brightness of the first display area AA1 and the second display area AA2, the current density of the sub-pixel 1 located in the second display area AA2 can be appropriately reduced, so that the difference of the current densities of the first display area AA1 and the second display area AA2 caused by the difference of the pixel densities can be compensated to a certain extent, and the lifetime of the sub-pixel 1 in the second display area AA2 can be prolonged.
Optionally, the light transmittance of the first transmittance reduction structure 41 and the second transmittance reduction structure 42 is greater than or equal to 50%, and the light transmittance of the first transmittance reduction structure 41 and the second transmittance reduction structure 42 is less than or equal to 60%.
Illustratively, as shown in fig. 12, the transmittance reducing structure 4 may be located at a side of the light shielding structure 2 close to the light emitting structure 10.
Alternatively, when the first and second transmittance reducing structures 41 and 42 are provided, the materials of the first and second transmittance reducing structures 41 and 42 may be set to be the same, as shown in fig. 12, and the thickness of the first transmittance reducing structure 41 is made larger than that of the second transmittance reducing structure 42, so as to reduce the light transmittance a1 of the first transmittance reducing structure 41.
Taking the display panel as an OLED display panel as an example, the cathode of the OLED device, the insulating layer in the encapsulation layer or the touch layer, or the cover plate (cover glass) may be reused as the transmittance reducing structure, and the purpose of reducing the light transmittance of the first transmittance reducing structure 41 and compensating the difference between the current densities on the sub-pixels of the first display area AA1 and the second display area AA2 due to the difference in pixel density is achieved by increasing the thickness of the cathode of the OLED device located in the first display area AA1, or increasing the thickness of the encapsulation layer located in the first display area AA1, or increasing the thickness of the insulating layer in the touch layer located in the first display area AA 1.
Fig. 13 is a schematic view of a display device according to an embodiment of the present invention, where the display device includes the display panel 100. The specific structure of the display panel 100 has been described in detail in the above embodiments, and is not described herein again. Of course, the display device shown in fig. 13 is only a schematic illustration, and the display device may be any electronic device with a display function, such as a mobile phone, a tablet computer, a notebook computer, an electronic book, or a television.
In the display device provided by the embodiment of the invention, the first light shielding structure is arranged in the first display area of the display panel, and the first light shielding structure is partially overlapped with the light emitting structure positioned in the first display area along the normal direction of the display panel, so that part of light emitted by the light emitting structure positioned in the first display area is shielded by the first light shielding structure, and thus the transmittance of light emitted by the first display area in the display panel is reduced, and further the brightness of the first display area is reduced. Therefore, for the sub-pixels of the second display area with smaller sub-pixel density, on the basis of ensuring the uniform brightness of the first display area and the second display area, the current density of the sub-pixels in the second display area can be properly reduced, so that the difference of the current density of the first display area and the second display area caused by the density difference of the sub-pixels can be compensated to a certain extent, and the service life of the sub-pixels in the second display area can be prolonged.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (12)
1. A display panel, comprising: a first display area and a second display area, the first display area at least partially surrounding the second display area; and the first display region and the second display region each include a plurality of sub-pixels, and,
the density of the sub-pixels in the first display area is greater than the density of the sub-pixels in the second display area;
the sub-pixels comprise light emitting structures, and the display panel further comprises light shielding structures positioned on the light emitting sides of the display panel; the shading structure comprises a first shading structure positioned in the first display area;
the first shading structure is provided with an opening, the opening is partially overlapped with the light emitting structure positioned in the first display area along the normal direction of the display panel, and the first shading structure is partially overlapped with the light emitting structure positioned in the first display area.
2. The display panel of claim 1, wherein the sub-pixels comprise a first sub-pixel, an area of an orthographic projection of the light emitting structure of the first sub-pixel in the first display region on a plane of the display panel is S1, an area of an orthographic projection of the light emitting structure of the first sub-pixel in the second display region on a plane of the display panel is S2, and wherein S1 is less than or equal to S2.
3. The display panel according to claim 1,
the shading structure also comprises a second shading structure positioned in the second display area; along the normal direction of the display panel, the second light shielding structure is not overlapped with the light emitting structure in the second display area.
4. The display panel according to claim 3,
the second shading structure comprises a plurality of through holes, and the through holes penetrate through the second shading structure along the normal direction of the display panel.
5. The display panel according to claim 4, wherein the width of the through hole is less than or equal to 50 μm in any direction in the plane of the display panel.
6. The display panel according to claim 2,
the sub-pixels comprise first sub-pixels, and the overlapping part of the first light shielding structure and the light emitting structure of the first sub-pixel is a first overlapping part along the normal direction of the display panel;
the first display area comprises a first sub-display area and a second sub-display area, the second sub-display area is located on one side, close to the second display area, of the first sub-display area, the width of the first overlapping portion in the first sub-display area along a first direction is larger than the width of the first overlapping portion in the second sub-display area along the first direction, and the first direction is the direction in which the first display area points to the second display area.
7. The display panel according to claim 6, wherein the second sub-display region includes a plurality of the first overlapping portions arranged in the first direction, and a width of the first overlapping portion in the first direction decreases as a distance from the first overlapping portion to the second display region decreases.
8. The display panel according to claim 3, comprising: the sub-pixels comprise a second sub-pixel and a third sub-pixel which are adjacent along a second direction, and the second direction is a direction in which the second display area points to the first display area;
the second shading structure comprises a second sub shading structure, and the second sub shading structure is positioned between the second sub pixel and the third sub pixel;
the second display area comprises a third sub-display area and a fourth sub-display area, and the third sub-display area is positioned on one side, close to the first display area, of the fourth sub-display area;
the width of the second sub light shielding structure located in the third sub display area along the second direction is larger than the width of the second sub light shielding structure located in the fourth sub display area along the second direction.
9. The display panel according to claim 8, wherein the third sub display area comprises a plurality of second sub light shielding structures, the second sub light shielding structures are arranged along the second direction, and the smaller the distance from the second sub light shielding structure to the first display area, the larger the width of the second sub light shielding structure along the second direction.
10. The display panel according to claim 1,
the color filter structure is also included; the color filter structure is positioned on the light emergent side of the display panel, and at least part of the color filter structure covers the sub-pixels;
the color filter structures comprise a plurality of first color filter structures positioned in the first display area and a plurality of second color filter structures positioned in the second display area;
and the thickness of the first color filter structure is greater than that of the second color filter structure along the normal direction of the display panel.
11. The display panel according to claim 1,
the light shielding structure includes a black resin material.
12. A display device characterized in that it comprises a display panel according to any one of claims 1 to 11.
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| CN202010005497.1A CN111161643B (en) | 2020-01-03 | 2020-01-03 | Display panel and display device |
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| CN202010005497.1A CN111161643B (en) | 2020-01-03 | 2020-01-03 | Display panel and display device |
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