Display panel and display device

Abstract

A display panel is provided. The display panel includes: a plurality of first pixels; a plurality of second pixels; a first black matrix; and a second black matrix. The first black matrix is at least partially disposed in a region having a plurality of first pixels and a region having a plurality of second pixels. The second black matrix is at least partially disposed in an area having the plurality of second pixels and at least partially not disposed in an area having the plurality of first pixels.

Description

Technical Field

[0001] The present invention relates to display technology, and in particular to a display panel and a display device. Background Art

[0002] Display devices such as mobile phones have been developed to provide many functions. Users can use display devices to access various private information. For example, users can use display devices to access bank accounts, pay bills, make online purchases, and access various password-protected websites. These types of personal information are private and are often subject to identity theft and privacy violations. Therefore, in recent years, privacy protection has become a focus of display technology research and development. Summary of the invention

[0003] On the one hand, the present disclosure provides a display panel, comprising: a plurality of first pixels; a plurality of second pixels; a first black matrix; and a second black matrix; wherein the first black matrix is ​​at least partially disposed in an area having the plurality of first pixels and an area having the plurality of second pixels; and the second black matrix is ​​at least partially disposed in the area having the plurality of second pixels, and is at least partially not disposed in the area having the plurality of first pixels.

[0004] Optionally, the second black matrix is ​​basically not set in the area having the multiple first pixels; in the area having the multiple first pixels, the orthographic projection of the first black matrix on the substrate and the orthographic projection of the second black matrix on the substrate basically do not overlap; and in the area having the multiple second pixels, the orthographic projection of the first black matrix on the substrate and the orthographic projection of the second black matrix on the substrate at least partially overlap.

[0005] Optionally, the second black matrix includes a plurality of strips; the display panel includes a plurality of slits; the plurality of strips and the plurality of slits are arranged alternately; two adjacent strips among the plurality of strips are separated by a slit among the plurality of slits; and two adjacent slits among the plurality of slits are separated by a strip among the plurality of strips.

[0006] Optionally, the display panel further comprises a pixel defining layer, wherein the pixel defining layer defines a plurality of first sub-pixel openings in the region having the plurality of first pixels, and defines a plurality of second sub-pixel openings in the region having the plurality of second pixels; wherein, in the region having the plurality of first pixels, a portion of the first black matrix located between two adjacent sub-pixels has a first width along a plane intersecting the two adjacent sub-pixels and the portion of the first black matrix and perpendicular to the surface of the substrate, and a portion of the pixel defining layer located between the same two adjacent sub-pixels has a first width along a plane intersecting the two adjacent sub-pixels and the portion of the pixel defining layer And a plane perpendicular to the surface of the substrate has a second width, and the second width is greater than the first width; and in the area having the plurality of second pixels, a portion of the first black matrix located between two adjacent sub-pixels has a third width along a plane intersecting with the two adjacent sub-pixels and the portion of the first black matrix and perpendicular to the surface of the substrate, and a portion of the pixel defining layer located between the same two adjacent sub-pixels has a fifth width along a plane intersecting with the two adjacent sub-pixels and the portion of the pixel defining layer and perpendicular to the surface of the substrate, and the third width is substantially the same as the fifth width.

[0007] Optionally, in the area having the multiple second pixels, a portion of the second black matrix located between the same two adjacent sub-pixels has a fourth width along a plane intersecting with the two adjacent sub-pixels and the portion of the second black matrix and perpendicular to the surface of the substrate; and the fourth width is greater than the fifth width.

[0008] Optionally, in the area having the multiple second pixels, a portion of the second black matrix located between the same two adjacent sub-pixels has a fourth width along a plane intersecting the two adjacent sub-pixels and the portion of the second black matrix and perpendicular to the surface of the substrate; and the fourth width is substantially the same as the fifth width.

[0009] Optionally, the display panel includes: a plurality of first openings extending through the first black matrix; a plurality of second openings extending through the first black matrix; and a plurality of third openings extending through the second black matrix; the plurality of first openings are configured to allow light emitted from a plurality of first light-emitting elements in a plurality of first sub-pixels to pass through; the plurality of second openings are configured to allow light emitted from a plurality of second light-emitting elements in a plurality of second sub-pixels to pass through; and the plurality of third openings are configured to allow light emitted from a plurality of second light-emitting elements in the plurality of second sub-pixels to pass through; wherein, in the portion of the display panel having the plurality of second pixels, the second openings among the plurality of second openings configured to allow light emitted from the second light-emitting element to pass through have a first opening width along a plane intersecting with two adjacent second sub-pixels and perpendicular to the surface of the substrate, and the third openings among the plurality of third openings configured to allow light emitted from the same second light-emitting element to pass through have a second opening width along the plane intersecting with the two adjacent second sub-pixels and perpendicular to the surface of the substrate.

[0010] Optionally, the first opening width is greater than the second opening width.

[0011] Optionally, an orthographic projection of an edge of the second opening on the substrate substantially surrounds an orthographic projection of an edge of the third opening on the substrate.

[0012] Optionally, the first opening width and the second opening width are substantially the same.

[0013] Optionally, an orthographic projection of an edge of the second opening on the substrate and an orthographic projection of an edge of the third opening on the substrate substantially overlap with each other.

[0014] Optionally, in the area having the plurality of second pixels, the display panel further includes: an insulating layer separating the first black matrix and the second black matrix; and a light control structure extending at least partially through the insulating layer; wherein the light control structure is connected to a portion of the first black matrix and to a portion of the second black matrix.

[0015] Optionally, the second black matrix comprises a plurality of sub-layers; two adjacent sub-layers among the plurality of sub-layers are separated by an insulating layer; and orthographic projections of the plurality of sub-layers on the base substrate substantially overlap with each other.

[0016] Optionally, the display panel also includes a lens layer, which includes a plurality of lenses; wherein, in the area having the plurality of second pixels, the orthographic projection of each lens of the plurality of lenses on the base substrate at least partially overlaps with the orthographic projection of the second light-emitting element on the base substrate.

[0017] Optionally, the display panel includes: a first coating layer; the plurality of lenses and the first black matrix, which are located on the first coating layer; a second coating layer, which is located on a side of the plurality of lenses and the first black matrix away from the first coating layer; and the second black matrix, which is located on a side of the second coating layer away from the plurality of lenses and the first black matrix.

[0018] Optionally, the display panel includes: a first cladding layer; the first black matrix, which is located on the first cladding layer; a second cladding layer, which is located on a side of the first black matrix away from the first cladding layer; and the plurality of lenses and the second black matrix, which are located on a side of the second cladding layer away from the first black matrix.

[0019] Optionally, the display panel includes: a first coating layer; the first black matrix, which is located on the first coating layer; a second coating layer, which is located on a side of the first black matrix away from the first coating layer; and the second black matrix, which is located on a side of the second coating layer away from the first black matrix; a third coating layer, which is located on a side of the second black matrix away from the second coating layer; and the plurality of lenses, which are located on a side of the third coating layer away from the second black matrix.

[0020] Optionally, the display panel includes a plurality of first pixel rows and a plurality of second pixel rows arranged alternately; two adjacent first pixel rows among the plurality of first pixel rows are separated by a single second pixel row among the plurality of second pixel rows; two adjacent second pixel rows among the plurality of second pixel rows are separated by a single first pixel row among the plurality of first pixel rows; each first pixel row among the plurality of first pixel rows includes a plurality of pixels among the plurality of first pixels; each second pixel row among the plurality of second pixel rows includes a plurality of second pixels among the plurality of second pixels; each first pixel among the plurality of first pixels includes a first sub-pixel, a second sub-pixel and a third sub-pixel; and each second pixel of the plurality of second pixels includes a plurality of fourth sub-pixels, a plurality of fifth sub-pixels and a plurality of sixth sub-pixels.

[0021] On the other hand, the present disclosure provides a display panel, comprising: a plurality of first pixels; a plurality of second pixels; a first black matrix; and a second black matrix; wherein, in an area having the plurality of first pixels, an orthographic projection of the first black matrix on a substrate and an orthographic projection of the second black matrix on the substrate substantially do not overlap; and in an area having the plurality of second pixels, the orthographic projection of the first black matrix on the substrate and the orthographic projection of the second black matrix on the substrate at least partially overlap.

[0022] In another aspect, the present disclosure provides a display device comprising the display panel described herein, and one or more integrated circuits connected to the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] According to various disclosed embodiments, the following drawings are examples only for illustration purposes and are not intended to limit the scope of the present invention.

[0024] Figure 1 is a schematic diagram showing the pixel arrangement of a display panel in some embodiments of the present disclosure.

[0025] Figure 2 The structure of a portion of a display panel in some embodiments according to the present disclosure is shown.

[0026] Figure 3 is a schematic diagram showing the pixel arrangement of a display panel in some embodiments of the present disclosure.

[0027] Figure 4 is a schematic diagram showing the pixel arrangement of a display panel in some embodiments of the present disclosure.

[0028] Figure 5 is a schematic diagram showing the pixel arrangement of a display panel in some embodiments of the present disclosure.

[0029] Figure 6 is a schematic diagram showing the pixel arrangement of a display panel in some embodiments of the present disclosure.

[0030] Figure 7 is a cross-sectional view of a plurality of first pixels in a portion of a display panel in some embodiments according to the present disclosure.

[0031] Figure 8 is a cross-sectional view of a plurality of second pixels in a portion of a display panel in some embodiments according to the present disclosure.

[0032] Fig. 9 is a plan view of a first black matrix according to some embodiments of the present disclosure.

[0033] Fig.10 is a plan view of a second black matrix according to some embodiments of the present disclosure.

[0034] Fig.11 It is a superposition of the first black matrix and the second black matrix according to some embodiments of the present disclosure.

[0035] Fig.12 is a cross-sectional view of a plurality of first pixels in a portion of a display panel in some embodiments according to the present disclosure.

[0036] Fig.13 is a cross-sectional view of a plurality of second pixels in a portion of a display panel in some embodiments according to the present disclosure.

[0037] Fig.14 is a plan view of a first black matrix according to some embodiments of the present disclosure.

[0038] Fig.15 is a plan view of a second black matrix according to some embodiments of the present disclosure.

[0039] Fig.16 It is a superposition of the first black matrix and the second black matrix according to some embodiments of the present disclosure.

[0040] Fig.17 is a cross-sectional view of a plurality of first pixels in a portion of a display panel in some embodiments according to the present disclosure.

[0041] Fig.18 is a cross-sectional view of a plurality of second pixels in a portion of a display panel in some embodiments according to the present disclosure.

[0042] Fig.19 is a plan view of a first black matrix according to some embodiments of the present disclosure.

[0043] Fig. 20 is a plan view of a second black matrix according to some embodiments of the present disclosure.

[0044] Fig.21 It is a superposition of the first black matrix and the second black matrix according to some embodiments of the present disclosure.

[0045] Fig. 22 is a cross-sectional view of a plurality of first pixels in a portion of a display panel in some embodiments according to the present disclosure.

[0046] Fig.23 is a cross-sectional view of a plurality of second pixels in a portion of a display panel in some embodiments according to the present disclosure.

[0047] Fig.24 is a cross-sectional view of a plurality of second pixels in a portion of a display panel in an alternative embodiment according to the present disclosure.

[0048] Fig.25 is a plan view of a first black matrix according to some embodiments of the present disclosure.

[0049] Fig.26 is a plan view of a second black matrix according to some embodiments of the present disclosure.

[0050] Fig. 27 It is a superposition of the first black matrix and the second black matrix according to some embodiments of the present disclosure.

[0051] Fig.28 Various parameters in a display panel according to some embodiments of the present disclosure are shown.

[0052] Fig.29 The correlation between brightness attenuation and viewing angle in some embodiments according to the present disclosure is shown.

[0053] Fig.30 is a cross-sectional view of a plurality of second pixels in a portion of a display panel in some embodiments according to the present disclosure.

[0054] Fig.31 is a cross-sectional view of a plurality of second pixels in a portion of a display panel in some embodiments according to the present disclosure.

[0055] Fig.32 is a cross-sectional view of a plurality of second pixels in a portion of a display panel in some embodiments according to the present disclosure.

[0056] Fig.33 Various parameters in a display panel according to some embodiments of the present disclosure are shown.

[0057] Fig.34 Various parameters in a display panel according to some embodiments of the present disclosure are shown.

[0058] Fig.35 Various parameters in a display panel according to some embodiments of the present disclosure are shown.

[0059] Fig.36 Various parameters in a display panel according to some embodiments of the present disclosure are shown.

[0060] Fig.37 The correlation between brightness attenuation and viewing angle in some embodiments according to the present disclosure is shown. DETAILED DESCRIPTION

[0061] The present disclosure will now be described in more detail with reference to the following examples. It should be noted that the following description of some of the embodiments presented herein is for illustration and description purposes only. It is not intended to be exhaustive or limited to the precise form disclosed.

[0062] The present disclosure provides, among other things, a display panel and a display device that substantially eliminate one or more problems caused by the limitations and disadvantages of the prior art. In one aspect, the present disclosure provides a display panel. In some embodiments, the display panel includes: a plurality of first pixels; a plurality of second pixels; a first black matrix; and a second black matrix. Optionally, the first black matrix is ​​at least partially disposed in an area having a plurality of first pixels and an area having a plurality of second pixels. Optionally, the second black matrix is ​​at least partially disposed in an area having a plurality of second pixels, and is at least partially not disposed in an area having a plurality of first pixels. Optionally, the second black matrix is ​​disposed in an area having a plurality of second pixels, and is not disposed in an area having a plurality of first pixels.

[0063] Figure 1 Schematic diagram showing the pixel arrangement of a display panel in some embodiments of the present disclosure. Figure 1 In some embodiments, the display panel includes a plurality of first pixel rows PR1 and a plurality of second pixel rows PR2. Optionally, in some embodiments, the display panel includes a plurality of first pixel rows PR1 and a plurality of second pixel rows PR2 arranged alternately. Optionally, two adjacent first pixel rows in the plurality of first pixel rows PR1 are separated by a single second pixel row in the plurality of second pixel rows PR2. Two adjacent second pixel rows in the plurality of second pixel rows PR2 are separated by a single first pixel row in the plurality of first pixel rows PR1.

[0064] In some embodiments, each of the plurality of first pixel rows PR1 includes a plurality of first pixels px arranged in sequence, and each of the plurality of second pixel rows PR2 includes a plurality of second pixels px' arranged in sequence. Figure 2 Schematic diagram showing a structure of a portion of a display panel in some embodiments of the present disclosure. Figure 1 and Figure 2 In some embodiments, each of the plurality of first pixels px includes a first sub-pixel sp1, a second sub-pixel sp2, and a third sub-pixel sp3. In some embodiments, each of the plurality of second pixels px' includes one or more fourth sub-pixels, one or more fifth sub-pixels, and one or more sixth sub-pixels. Figure 1 and Figure 2 In one example depicted in , each second pixel includes multiple fourth sub-pixels (e.g., sub-pixels sp1'-1 and sp1'-2), multiple fifth sub-pixels (e.g., sp2'-1 and sp2'-2), and multiple sixth sub-pixels (e.g., sp3'-1 and sp3'-2).

[0065] In an alternative example, each second pixel includes a single fourth sub-pixel, a single fifth sub-pixel, and a single sixth sub-pixel.

[0066] In an alternative example, each second pixel includes a plurality of fourth sub-pixels (eg, sub-pixels sp1′-1 and sp1′-2), a plurality of fifth sub-pixels (eg, sp2′-1 and sp2′-2), and a single sixth sub-pixel.

[0067] In an alternative example, each second pixel includes a single fourth sub-pixel, a plurality of fifth sub-pixels (eg, sp2'-1 and sp2'-2), and a plurality of sixth sub-pixels (eg, sp3'-1 and sp3'-2).

[0068] In an alternative example, each second pixel includes a plurality of fourth sub-pixels (eg, sub-pixels sp1 ′- 1 and sp1 ′- 2 ), a single fifth sub-pixel, and a plurality of sixth sub-pixels (eg, sp3 ′- 1 and sp3 ′- 2 ).

[0069] In some embodiments, the first subpixel sp1 and the plurality of fourth subpixels are subpixels of a first color (e.g., red). In some embodiments, the second subpixel sp2 and the plurality of fifth subpixels are subpixels of a second color (e.g., green). In some embodiments, the third subpixel sp3 and the plurality of sixth subpixels are subpixels of a third color (e.g., blue).

[0070] In some embodiments, the display panel includes an integral anode configured to provide data signals to a plurality of fourth sub-pixels in each second pixel. In some embodiments, the display panel includes an integral anode configured to provide data signals to a plurality of fifth sub-pixels in each second pixel. In some embodiments, the display panel includes an integral anode configured to provide data signals to a plurality of sixth sub-pixels in each second pixel.

[0071] In an alternative embodiment, the display panel includes a plurality of anodes configured to independently provide data signals to the plurality of fourth sub-pixels in the respective second pixels, respectively.

[0072] In an alternative embodiment, the display panel includes a plurality of anodes configured to independently provide data signals to the plurality of fifth sub-pixels in the respective second pixels, respectively.

[0073] In an alternative embodiment, the display panel includes a plurality of anodes configured to independently provide data signals to the plurality of sixth sub-pixels in the respective second pixels, respectively.

[0074] In some embodiments, the display panel includes an integral cathode for the plurality of fourth subpixels in each second pixel and the first subpixel sp1 in the first pixel in the first adjacent first pixel row PR1-1. In some embodiments, the display panel includes an integral light emitting layer for the plurality of fourth subpixels in each second pixel and the first subpixel sp1 in the first pixel in the first adjacent first pixel row PR1-1. In some embodiments, the display panel includes two independent anodes, one for the plurality of fourth subpixels in each second pixel and one for the first subpixel sp1 in the first pixel in the first adjacent first pixel row PR1-1. The two independent anodes are independently controlled and configured to receive independent data signals.

[0075] In some embodiments, the display panel includes an integral cathode for a plurality of fifth subpixels in each second pixel and a second subpixel sp2 in a first pixel in a second adjacent first pixel row PR1-2. Each second pixel is located in a second pixel row that separates the first adjacent first pixel row PR1-1 and the second adjacent first pixel row PR1-2. In some embodiments, the display panel includes an integral light emitting layer for a plurality of fifth subpixels in each second pixel and a second subpixel sp2 in a first pixel in a second adjacent first pixel row PR1-2. In some embodiments, the display panel includes two independent anodes, one for a plurality of fifth subpixels in each second pixel and one for a second subpixel sp2 in a first pixel in a second adjacent first pixel row PR1-2. The two independent anodes are independently controlled and configured to receive independent data signals.

[0076] In some embodiments, the display panel includes an integral cathode for the plurality of sixth subpixels in each second pixel and the third subpixel sp3 in the first pixel in the second adjacent first pixel row PR1-2. In some embodiments, the display panel includes an integral light emitting layer for the plurality of sixth subpixels in each second pixel and the third subpixel sp3 in the first pixel in the second adjacent first pixel row PR1-2. In some embodiments, the display panel includes two independent anodes, one for the plurality of sixth subpixels in each second pixel and one for the third subpixel sp3 in the first pixel in the second adjacent first pixel row PR1-2. The two independent anodes are independently controlled and configured to receive independent data signals.

[0077] In some embodiments, the display panel is configured to operate in a first mode, a second mode, or a third mode. In the first mode, the first pixels in the plurality of first pixel rows PR1 and the second pixels in the plurality of second pixel rows PR2 are configured to emit light. In the second mode, the second pixels in the plurality of second pixel rows PR2 are configured to display images (e.g., emit light), while the first pixels in the plurality of first pixel rows PR1 are not configured to display images (e.g., do not emit light). In some embodiments, the second mode is a privacy mode. In the third mode, the second pixels in the plurality of second pixel rows PR2 are not configured to display images (e.g., emit light), while the first pixels in the plurality of first pixel rows PR1 are configured to display images (e.g., emit light).

[0078] Figure 3 is a schematic diagram showing the pixel arrangement of a display panel in some embodiments of the present disclosure. Figure 4 is a schematic diagram showing the pixel arrangement of a display panel in some embodiments of the present disclosure. Figure 5 is a schematic diagram showing the pixel arrangement of a display panel in some embodiments of the present disclosure. Figure 6 Schematic diagram showing the pixel arrangement of a display panel in some embodiments of the present disclosure. Figures 3 to 6 In some embodiments, each of the plurality of first pixels includes a first sub-pixel sp1, a second sub-pixel sp2, and a third sub-pixel sp3. In some embodiments, each of the plurality of second pixels includes a plurality of fourth sub-pixels sp1', a plurality of fifth sub-pixels sp2', and a plurality of sixth sub-pixels sp3'. Figure 3 In the embodiment, the total number of the fourth sub-pixels sp1' is 2, the total number of the fifth sub-pixels sp2' is 2, and the total number of the sixth sub-pixels sp3' is 2. Figure 4 In the embodiment, the total number of the fourth sub-pixels sp1' is 2, the total number of the fifth sub-pixels sp2' is 4, and the total number of the sixth sub-pixels sp3' is 4. Figure 5 In the embodiment, the total number of the fourth sub-pixels sp1' is 3, the total number of the fifth sub-pixels sp2' is 6, and the total number of the sixth sub-pixels sp3' is 9. Figure 6, the total number of the plurality of fourth sub-pixels sp1' is 3, the total number of the plurality of fifth sub-pixels sp2' is 9, and the total number of the plurality of sixth sub-pixels sp3' is 9. Generally, the larger the area allocated to the sub-pixels of the same color in the same sub-pixel, the greater the number of sub-pixels of the same color in the same sub-pixel. In some embodiments, the area ratio between each fourth sub-pixel, each fifth sub-pixel, or each sixth sub-pixel is in the range of 0.5 to 2.0, for example, 0.75 to 1.5, or 0.85 to 1.75. In some embodiments, the ratio of the number of the plurality of fourth sub-pixels sp1', the number of the plurality of fifth sub-pixels sp2', and the number of the plurality of sixth sub-pixels sp3' is in the range of 1 to 3, for example, 1, 2, or 3.

[0079] Figure 7 is a cross-sectional view of a plurality of first pixels in a portion of a display panel in some embodiments according to the present disclosure. Figure 7 Can be along Figure 2 A cross-sectional view of the line A-A' in FIG. Figure 7 , the portion of the display panel having a plurality of first pixels includes: a substrate BS; a pixel defining layer PDL, which is located on the substrate BS and defines a plurality of first sub-pixel openings, and a plurality of first light-emitting elements LE1 are at least partially accommodated in the plurality of first sub-pixel openings; an encapsulation layer EN, which is located on a side of the pixel defining layer PDL and the plurality of first light-emitting elements LE1 away from the substrate BS; a first cladding layer OC1, which is located on a side of the encapsulation layer EN away from the substrate BS; a color film CF and a first black matrix BM1, which are located on a side of the first cladding layer OC1 away from the substrate BS; a second cladding layer OC2, which is located on a side of the color film CF and the first black matrix BM1 away from the substrate BS; and a third cladding layer OC3, which is located on a side of the second cladding layer OC2 away from the substrate BS. Optionally, the portion of the display panel also includes a touch structure, which is located on a side of the encapsulation layer EN away from the substrate BS and on a side of the first cladding layer OC1 close to the substrate BS.

[0080] In one example, the thickness of the encapsulation layer EN is in the range of 8 μm to 20 μm. In another example, the thickness of the first cladding layer OC1 is in the range of 2 μm to 5 μm. In another example, the thickness of the second cladding layer OC2 is in the range of 3 μm to 15 μm.

[0081] In some embodiments, in a portion of the display panel having a plurality of first pixels, the orthographic projection of the first black matrix BM1 on the substrate BS at least partially overlaps with the orthographic projection of the pixel defining layer PDL on the substrate BS. In some embodiments, in a portion of the display panel having a plurality of first pixels, a portion of the first black matrix BM1 located between two adjacent sub-pixels has a first width w1 along a plane intersecting the two adjacent sub-pixels and the portion of the first black matrix BM1 and perpendicular to the surface of the substrate BS, and a portion of the pixel defining layer PDL located between the same two adjacent sub-pixels has a second width w2 along a plane intersecting the two adjacent sub-pixels and the portion of the pixel defining layer PDL and perpendicular to the surface of the substrate BS, and the second width w2 is greater than the first width w1. In one example, the second width w2 is 2 μm to 4 μm greater than the first width w1.

[0082] Figure 8 is a cross-sectional view of a plurality of second pixels in a portion of a display panel in some embodiments according to the present disclosure. Figure 8 Can be along Figure 2 Cross-sectional view of line BB' in FIG. Figure 8 , the portion of the display panel having a plurality of second pixels includes: a substrate BS; a pixel defining layer PDL, which is located on the substrate BS and defines a plurality of second sub-pixel openings, and a plurality of second light-emitting elements LE2 are at least partially accommodated in the plurality of second sub-pixel openings; an encapsulation layer EN, which is located on a side of the pixel defining layer PDL and the plurality of second light-emitting elements LE2 away from the substrate BS; a first cladding layer OC1, which is located on a side of the encapsulation layer EN away from the substrate BS; a color film CF and a first black matrix BM1, which are located on a side of the first cladding layer OC1 away from the substrate BS; a second cladding layer OC2, which is located on a side of the color film CF and the first black matrix BM1 away from the substrate BS; a second black matrix BM2, which is located on a side of the second cladding layer OC2 away from the substrate BS; and a third cladding layer OC3, which is located on a side of the second black matrix BM2 away from the substrate BS. Optionally, the first black matrix BM1 is an integral structure extending in the portion of the display panel having a plurality of first pixels and the portion of the display panel having a plurality of second pixels. Optionally, the display panel portion further includes a touch control structure, which is located on a side of the encapsulation layer EN away from the base substrate BS and on a side of the first cladding layer OC1 close to the base substrate BS.

[0083] In one example, the thickness of the encapsulation layer EN is in the range of 8 μm to 20 μm. In another example, the thickness of the first cladding layer OC1 is in the range of 2 μm to 5 μm. In another example, the thickness of the second cladding layer OC2 is in the range of 3 μm to 15 μm. In another example, the thickness of the third cladding layer OC3 is in the range of 3 μm to 5 μm.

[0084] In some embodiments, in a portion of the display panel having multiple second pixels, the orthographic projection of the first black matrix BM1 on the substrate BS at least partially overlaps with the orthographic projection of the pixel defining layer PDL on the substrate BS; the orthographic projection of the second black matrix BM2 on the substrate BS at least partially overlaps with the orthographic projection of the pixel defining layer PDL on the substrate BS.

[0085] In some embodiments, in a portion of the display panel having a plurality of second pixels, a portion of the first black matrix BM1 located between two adjacent sub-pixels has a third width w3 along a plane intersecting with the two adjacent sub-pixels and the portion of the first black matrix BM1 and perpendicular to the surface of the substrate BS, a portion of the second black matrix BM2 located between the same two adjacent sub-pixels has a fourth width w4 along a plane intersecting with the two adjacent sub-pixels and the portion of the second black matrix BM2 and perpendicular to the surface of the substrate BS, and a portion of the pixel defining layer PDL located between the same two adjacent sub-pixels has a fifth width w5 along a plane intersecting with the two adjacent sub-pixels and the portion of the pixel defining layer PDL and perpendicular to the surface of the substrate substrate BS.

[0086] Optionally, the third width w3 is substantially the same as the fifth width w5. As used herein, the term "substantially the same" means that the difference between two values ​​does not exceed 10% of a base value (e.g., one of the two values), such as no more than 8%, no more than 6%, no more than 4%, no more than 2%, no more than 1%, no more than 0.5%, no more than 0.1%, no more than 0.05%, and no more than 0.01% of the base value.

[0087] Optionally, the fourth width w4 is greater than the fifth width w5. In one example, the fourth width w4 is 2 μm to 4 μm greater than the fifth width w5.

[0088] In some embodiments, the fourth width w4 is greater than the third width w3, and the second width w2 is greater than the first width w1. Optionally, the fourth width w4 is greater than the second width w2. Optionally, the third width w3 is greater than the first width w1.

[0089] In some embodiments, in a portion of the display panel having a plurality of second pixels, a first portion of the first black matrix BM1 located between two adjacent sub-pixels of the same color has a first portion width along a plane intersecting the two adjacent sub-pixels of the same color and the first portion of the first black matrix BM1 and perpendicular to the surface of the substrate BS, and a second portion of the first black matrix BM1 located between two adjacent sub-pixels of different colors has a second portion width along a plane intersecting the two adjacent sub-pixels of different colors and the second portion of the first black matrix BM1 and perpendicular to the surface of the substrate BS. In some embodiments, the second portion width is greater than the first portion width.

[0090] In some embodiments, in a portion of the display panel having a plurality of second pixels, a first portion of the second black matrix BM2 located between two adjacent sub-pixels of the same color has a third portion width along a plane intersecting with the two adjacent sub-pixels of the same color and the first portion of the second black matrix BM2 and perpendicular to the surface of the substrate BS, and a second portion of the second black matrix BM2 located between two adjacent sub-pixels of different colors has a fourth portion width along a plane intersecting with the two adjacent sub-pixels of different colors and the second portion of the second black matrix BM2 and perpendicular to the surface of the substrate BS. In some embodiments, the fourth portion width is greater than the third portion width.

[0091] Fig. 9 is a plan view of a first black matrix according to some embodiments of the present disclosure. Fig.10 is a plan view of a second black matrix according to some embodiments of the present disclosure. Fig.11 is a superposition of the first black matrix and the second black matrix according to some embodiments of the present disclosure. Figures 9 to 11 The first black matrix BM1 is at least partially disposed in an area corresponding to a plurality of first pixel rows PR1 and a plurality of second pixel rows PR2, while the second black matrix BM2 is at least partially not disposed in an area corresponding to the plurality of first pixel rows PR1, and is at least partially disposed in an area corresponding to the plurality of second pixel rows PR2.

[0092] In some embodiments, the second black matrix BM2 is basically not set (for example, at least 50% not set, at least 55% not set, at least 60% not set, at least 65% not set, at least 70% not set, at least 75% not set, at least 80% not set, at least 85% not set, at least 90% not set, at least 95% not set, at least 99% not set, or not set at all) in the area corresponding to the plurality of first pixel rows PR1.

[0093] In some embodiments, in the area corresponding to multiple first pixel rows PR1, the orthographic projection of the first black matrix BM1 on the substrate and the orthographic projection of the second black matrix BM2 on the substrate do not basically overlap (for example, at least 50% non-overlapping, at least 55% non-overlapping, at least 60% non-overlapping, at least 65% non-overlapping, at least 70% non-overlapping, at least 75% non-overlapping, at least 80% non-overlapping, at least 85% non-overlapping, at least 90% non-overlapping, at least 95% non-overlapping, at least 99% non-overlapping, or no overlap at all).

[0094] In some embodiments, in an area corresponding to a plurality of second pixel rows PR2, an orthographic projection of the first black matrix BM1 on the substrate overlaps at least partially (for example, at least 10%, at least 15%, at least 20%, at least 25%, at least 30%, at least 35%, at least 40%, at least 45%, at least 50%, at least 55%, at least 60%, at least 65%, at least 70%, at least 75%, at least 80%, at least 85%, at least 90%, at least 95%, or at least 99%) with an orthographic projection of the second black matrix BM2 on the substrate.

[0095] In some embodiments, the second black matrix BM2 includes a plurality of strips BR, and the display panel includes a plurality of slits ST, and the plurality of strips BR and the plurality of slits ST are alternately arranged. Two adjacent strips in the plurality of strips BR are separated by a slit in the plurality of slits ST. Two adjacent slits in the plurality of slits ST are separated by a strip in the plurality of strips BR. The plurality of strips BR corresponds to the plurality of second pixel rows PR2. The plurality of slits ST corresponds to the plurality of first pixel rows PR1.

[0096] In some embodiments, the display panel includes a plurality of first openings AP1 extending through the first black matrix BM1 and a plurality of second openings AP2 extending through the first black matrix BM1. The plurality of first openings AP1 are configured to allow light emitted from a plurality of first light-emitting elements in a plurality of first sub-pixels to pass through, and the plurality of second openings AP2 are configured to allow light emitted from a plurality of second light-emitting elements in a plurality of second sub-pixels to pass through.

[0097] In some embodiments, each slit in the plurality of slits ST is a continuous slit. In some embodiments, each slit is a strip. In some embodiments, an area of ​​each slit is greater than a combined area of ​​a plurality of first openings AP1 in each of the plurality of first pixel rows PR1.

[0098] In some embodiments, the display panel includes a plurality of third openings AP3 extending through the second black matrix BM2. The plurality of third openings AP3 are configured to allow light emitted from the plurality of second light emitting elements in the plurality of second sub-pixels to pass therethrough.

[0099] In some embodiments, in a portion of the display panel having a plurality of second pixels, a second opening configured to allow light emitted from a second light-emitting element to pass through among the plurality of second openings AP2 has a first opening width along a plane intersecting two adjacent second sub-pixels and perpendicular to the surface of the substrate, and a third opening configured to allow light emitted from the same second light-emitting element to pass through among the plurality of third openings AP3 has a second opening width along a plane intersecting two adjacent second sub-pixels and perpendicular to the surface of the substrate. Optionally, the first opening width is greater than the second opening width. In one example, the first opening width is 2 μm to 4 μm greater than the second opening width.

[0100] In some embodiments, the orthographic projection of the edge of the second opening configured to allow light emitted from the second light emitting element to pass through among the plurality of second openings AP2 on the substrate substrate substantially surrounds (e.g., at least 50% surrounds, at least 55% surrounds, at least 60% surrounds, at least 65% surrounds, at least 70% surrounds, at least 75% surrounds, at least 80% surrounds, at least 85% surrounds, at least 90% surrounds, at least 95% surrounds, at least 99% surrounds, or completely surrounds) the orthographic projection of the edge of the third opening configured to allow light emitted from the same second light emitting element to pass through among the plurality of third openings AP3 on the substrate substrate. In some embodiments, for the same second sub-pixel, the area of ​​the corresponding second opening among the plurality of second openings AP2 is greater than the area of ​​the corresponding third opening among the plurality of third openings AP3. In some embodiments, for sub-pixels of the same color, the area of ​​the corresponding first opening among the plurality of first openings AP1 is greater than the area of ​​the corresponding second opening among the plurality of second openings AP2, and the area of ​​the corresponding second opening is greater than the area of ​​the corresponding third opening among the plurality of third openings AP3. The inventors of the present disclosure have found that by having such a structure, light transmission in a sub-pixel can be controlled.

[0101] The inventors of the present disclosure have found that when the display panel is operated in the second mode, the display panel having the structure according to the present disclosure can effectively reduce the anti-peeping viewing angle. In one example, the 45° brightness attenuation ratio of the left and right sides of the display panel according to the present disclosure can be reduced to 7%, and the 45° brightness attenuation ratio of the upper side of the display panel according to the present disclosure can be reduced to 4%.

[0102] Fig.12 is a cross-sectional view of a plurality of first pixels in a portion of a display panel according to some embodiments of the present disclosure. Fig.12, the portion of the display panel having a plurality of first pixels includes: a substrate BS; a pixel defining layer PDL, which is located on the substrate BS and defines a plurality of first sub-pixel openings, and a plurality of first light-emitting elements LE1 are at least partially accommodated in the plurality of first sub-pixel openings; an encapsulation layer EN, which is located on the side of the pixel defining layer PDL and the plurality of first light-emitting elements LE1 away from the substrate BS; a first cladding layer OC1, which is located on the side of the encapsulation layer EN away from the substrate BS; a color film CF and a first black matrix BM1, which are located on the side of the first cladding layer OC1 away from the substrate BS; a second cladding layer OC2, which is located on the side of the color film CF and the first black matrix BM1 away from the substrate BS; an insulating layer IN, which is located on the side of the second cladding layer OC2 away from the substrate BS; and a third cladding layer OC3, which is located on the side of the insulating layer IN away from the substrate BS. Optionally, the portion of the display panel also includes a touch structure, which is located on the side of the encapsulation layer EN away from the substrate BS and on the side of the first cladding layer OC1 close to the substrate BS.

[0103] In one example, the thickness of the encapsulation layer EN is in the range of 8 μm to 20 μm. In another example, the thickness of the first cladding layer OC1 is in the range of 2 μm to 5 μm. In another example, the thickness of the second cladding layer OC2 is in the range of 3 μm to 8 μm. In another example, the thickness of the insulating layer IN is in the range of 10 μm to 40 μm. In another example, the thickness of the third cladding layer OC3 is in the range of 2 μm to 4 μm.

[0104] In some embodiments, in a portion of the display panel having a plurality of first pixels, the orthographic projection of the first black matrix BM1 on the substrate BS overlaps at least partially with the orthographic projection of the pixel defining layer PDL on the substrate BS. In some embodiments, in a portion of the display panel having a plurality of first pixels, a portion of the first black matrix BM1 between two adjacent sub-pixels has a first width w1 along a plane intersecting the two adjacent sub-pixels and the portion of the first black matrix BM1 and perpendicular to the surface of the substrate BS, and a portion of the pixel defining layer PDL between the same two adjacent sub-pixels has a second width w2 along a plane intersecting the two adjacent sub-pixels and the portion of the pixel defining layer PDL and perpendicular to the surface of the substrate BS. Optionally, the second width w2 is greater than the first width w1. In one example, the second width w2 is 2 μm to 4 μm greater than the first width w1.

[0105] Fig.13 is a cross-sectional view of a plurality of second pixels in a portion of a display panel according to some embodiments of the present disclosure. Fig.13, the portion of the display panel having multiple second pixels includes: a base substrate BS; a pixel defining layer PDL, which is located on the base substrate BS and defines multiple second sub-pixel openings, and multiple second light-emitting elements LE2 are at least partially accommodated in the multiple second sub-pixel openings; an encapsulation layer EN, which is located on the side of the pixel defining layer PDL and the multiple second light-emitting elements LE2 away from the base substrate BS; a first cladding layer OC1, which is located on the side of the encapsulation layer EN away from the base substrate BS; a color film CF and a first black matrix BM1, which are located on the side of the first cladding layer OC1 away from the base substrate BS; a second cladding layer OC2, which is located on the side of the color film CF and the first black matrix BM1 away from the base substrate BS; an insulating layer IN, which is located on the side of the second cladding layer OC2 away from the base substrate BS; a second black matrix BM2, which is located on the side of the insulating layer IN away from the base substrate BS; and a third cladding layer OC3, which is located on the side of the second black matrix BM2 away from the base substrate BS. Optionally, the first black matrix BM1 is an integral structure extending in a portion of the display panel having a plurality of first pixels and a portion of the display panel having a plurality of second pixels. Optionally, the portion of the display panel further includes a touch structure, which is located on a side of the encapsulation layer EN away from the base substrate BS and on a side of the first cladding layer OC1 close to the base substrate BS.

[0106] In one example, the thickness of the encapsulation layer EN is in the range of 8 μm to 20 μm. In another example, the thickness of the first cladding layer OC1 is in the range of 2 μm to 5 μm. In another example, the thickness of the second cladding layer OC2 is in the range of 3 μm to 8 μm. In another example, the thickness of the insulating layer IN is in the range of 10 μm to 40 μm. In another example, the thickness of the third cladding layer OC3 is in the range of 2 μm to 4 μm.

[0107] In some embodiments, in a portion of the display panel having multiple second pixels, the orthographic projection of the first black matrix BM1 on the substrate BS at least partially overlaps with the orthographic projection of the pixel defining layer PDL on the substrate BS; the orthographic projection of the second black matrix BM2 on the substrate BS at least partially overlaps with the orthographic projection of the pixel defining layer PDL on the substrate BS.

[0108] In some embodiments, in a portion of the display panel having a plurality of second pixels, a portion of the first black matrix BM1 located between two adjacent sub-pixels has a third width w3 along a plane intersecting with the two adjacent sub-pixels and the portion of the first black matrix BM1 and perpendicular to the surface of the substrate BS, a portion of the second black matrix BM2 located between the same two adjacent sub-pixels has a fourth width w4 along a plane intersecting with the two adjacent sub-pixels and the portion of the second black matrix BM2 and perpendicular to the surface of the substrate BS, and a portion of the pixel defining layer PDL located between the same two adjacent sub-pixels has a fifth width w5 along a plane intersecting with the two adjacent sub-pixels and the portion of the pixel defining layer PDL and perpendicular to the surface of the substrate substrate BS.

[0109] Optionally, the third width w3 is substantially the same as the fifth width w5.

[0110] Optionally, the fourth width w4 is substantially the same as the fifth width w5.

[0111] Optionally, the third width w3 is substantially the same as the fourth width w4.

[0112] Optionally, the third width w3, the fourth width w4 and the fifth width w5 are substantially the same.

[0113] Fig.14 is a plan view of a first black matrix according to some embodiments of the present disclosure. Fig.15 is a plan view of a second black matrix according to some embodiments of the present disclosure. Fig.16 is a superposition of the first black matrix and the second black matrix according to some embodiments of the present disclosure. Figures 14 to 16 The first black matrix BM1 is at least partially disposed in an area corresponding to a plurality of first pixel rows PR1 and a plurality of second pixel rows PR2, while the second black matrix BM2 is at least partially not disposed in an area corresponding to the plurality of first pixel rows PR1, and is at least partially disposed in an area corresponding to the plurality of second pixel rows PR2.

[0114] In some embodiments, the second black matrix BM2 is basically not set (for example, at least 50% not set, at least 55% not set, at least 60% not set, at least 65% not set, at least 70% not set, at least 75% not set, at least 80% not set, at least 85% not set, at least 90% not set, at least 95% not set, at least 99% not set, or not set at all) in the area corresponding to the plurality of first pixel rows PR1.

[0115] In some embodiments, in the area corresponding to multiple first pixel rows PR1, the orthographic projection of the first black matrix BM1 on the substrate and the orthographic projection of the second black matrix BM2 on the substrate do not basically overlap (for example, at least 50% non-overlapping, at least 55% non-overlapping, at least 60% non-overlapping, at least 65% non-overlapping, at least 70% non-overlapping, at least 75% non-overlapping, at least 80% non-overlapping, at least 85% non-overlapping, at least 90% non-overlapping, at least 95% non-overlapping, at least 99% non-overlapping, or no overlap at all).

[0116] In some embodiments, in an area corresponding to a plurality of second pixel rows PR2, an orthographic projection of the first black matrix BM1 on the substrate overlaps at least partially (for example, at least 10%, at least 15%, at least 20%, at least 25%, at least 30%, at least 35%, at least 40%, at least 45%, at least 50%, at least 55%, at least 60%, at least 65%, at least 70%, at least 75%, at least 80%, at least 85%, at least 90%, at least 95%, or at least 99%) with an orthographic projection of the second black matrix BM2 on the substrate.

[0117] In some embodiments, the second black matrix BM2 includes a plurality of strips BR, and the display panel includes a plurality of slits ST, and the plurality of strips BR and the plurality of slits ST are alternately arranged. Two adjacent strips in the plurality of strips BR are separated by a slit in the plurality of slits ST. Two adjacent slits in the plurality of slits ST are separated by a strip in the plurality of strips BR. The plurality of strips BR corresponds to the plurality of second pixel rows PR2. The plurality of slits ST corresponds to the plurality of first pixel rows PR1.

[0118] In some embodiments, the display panel includes a plurality of first openings AP1 extending through the first black matrix BM1 and a plurality of second openings AP2 extending through the first black matrix BM1. The plurality of first openings AP1 are configured to allow light emitted from a plurality of first light-emitting elements in a plurality of first sub-pixels to pass through, and the plurality of second openings AP2 are configured to allow light emitted from a plurality of second light-emitting elements in a plurality of second sub-pixels to pass through.

[0119] In some embodiments, the display panel includes a plurality of third openings AP3 extending through the second black matrix BM2. The plurality of third openings AP3 are configured to allow light emitted from the plurality of second light emitting elements in the plurality of second sub-pixels to pass therethrough.

[0120] In some embodiments, in a portion of the display panel having a plurality of second pixels, a second opening configured to allow light emitted from a second light emitting element to pass through among the plurality of second openings AP2 has a first opening width along a plane intersecting two adjacent second sub-pixels and perpendicular to the surface of the substrate, and a third opening configured to allow light emitted from the same second light emitting element to pass through among the plurality of third openings AP3 has a second opening width along a plane intersecting two adjacent second sub-pixels and perpendicular to the surface of the substrate. Optionally, the first opening width and the second opening width are substantially the same.

[0121] In some embodiments, the orthographic projection of an edge of a second opening among the plurality of second openings AP2 configured to allow light emitted from a second light-emitting element to pass through, and the orthographic projection of an edge of a third opening among the plurality of third openings AP3 configured to allow light emitted from the same second light-emitting element to pass through, on the substrate substrate, substantially (for example, at least 50%, at least 55%, at least 60%, at least 65%, at least 70%, at least 75%, at least 80%, at least 85%, at least 90%, at least 95%, at least 99%, or completely) overlap with each other.

[0122] The inventors of the present disclosure have found that when the display panel is operated in the second mode, the display panel having the structure according to the present disclosure can effectively reduce the anti-peeping viewing angle. In one example, the 45° brightness attenuation ratio of the left and right sides of the display panel according to the present disclosure can be reduced to 4%, and the 45° brightness attenuation ratio of the upper side of the display panel according to the present disclosure can be reduced to 4%.

[0123] Fig.17 is a cross-sectional view of a plurality of first pixels in a portion of a display panel according to some embodiments of the present disclosure. Fig.17, the portion of the display panel having a plurality of first pixels includes: a substrate BS; a pixel defining layer PDL, which is located on the substrate BS and defines a plurality of first sub-pixel openings, and a plurality of first light-emitting elements LE1 are at least partially accommodated in the plurality of first sub-pixel openings; an encapsulation layer EN, which is located on the side of the pixel defining layer PDL and the plurality of first light-emitting elements LE1 away from the substrate BS; a first cladding layer OC1, which is located on the side of the encapsulation layer EN away from the substrate BS; a color film CF and a first black matrix BM1, which are located on the side of the first cladding layer OC1 away from the substrate BS; a second cladding layer OC2, which is located on the side of the color film CF and the first black matrix BM1 away from the substrate BS; an insulating layer IN, which is located on the side of the second cladding layer OC2 away from the substrate BS; and a third cladding layer OC3, which is located on the side of the insulating layer IN away from the substrate BS. Optionally, the portion of the display panel also includes a touch structure, which is located on the side of the encapsulation layer EN away from the substrate BS and on the side of the first cladding layer OC1 close to the substrate BS.

[0124] In one example, the thickness of the encapsulation layer EN is in the range of 8 μm to 20 μm. In another example, the thickness of the first cladding layer OC1 is in the range of 2 μm to 5 μm. In another example, the thickness of the second cladding layer OC2 is in the range of 3 μm to 8 μm. In another example, the thickness of the insulating layer IN is in the range of 10 μm to 40 μm. In another example, the thickness of the third cladding layer OC3 is in the range of 2 μm to 4 μm.

[0125] In some embodiments, in a portion of the display panel having a plurality of first pixels, the orthographic projection of the first black matrix BM1 on the substrate BS overlaps at least partially with the orthographic projection of the pixel defining layer PDL on the substrate BS. In some embodiments, in a portion of the display panel having a plurality of first pixels, a portion of the first black matrix BM1 located between two adjacent sub-pixels has a first width w1 along a plane intersecting the two adjacent sub-pixels and the portion of the first black matrix BM1 and perpendicular to the surface of the substrate BS, and a portion of the pixel defining layer PDL located between the same two adjacent sub-pixels has a second width w2 along a plane intersecting the two adjacent sub-pixels and the portion of the pixel defining layer PDL and perpendicular to the surface of the substrate BS. Optionally, the first width w1 is substantially the same as the second width w2.

[0126] Fig.18 is a cross-sectional view of a plurality of second pixels in a portion of a display panel according to some embodiments of the present disclosure. Fig.18, the portion of the display panel having multiple second pixels includes: a base substrate BS; a pixel defining layer PDL, which is located on the base substrate BS and defines multiple second sub-pixel openings, and multiple second light-emitting elements LE2 are at least partially accommodated in the multiple second sub-pixel openings; an encapsulation layer EN, which is located on the side of the pixel defining layer PDL and the multiple second light-emitting elements LE2 away from the base substrate BS; a first cladding layer OC1, which is located on the side of the encapsulation layer EN away from the base substrate BS; a color film CF and a first black matrix BM1, which are located on the side of the first cladding layer OC1 away from the base substrate BS; a second cladding layer OC2, which is located on the side of the color film CF and the first black matrix BM1 away from the base substrate BS; an insulating layer IN, which is located on the side of the second cladding layer OC2 away from the base substrate BS; a second black matrix BM2, which is located on the side of the insulating layer IN away from the base substrate BS; and a third cladding layer OC3, which is located on the side of the second black matrix BM2 away from the base substrate BS. Optionally, the first black matrix BM1 is an integral structure extending in a portion of the display panel having a plurality of first pixels and a portion of the display panel having a plurality of second pixels. Optionally, the portion of the display panel further includes a touch structure, which is located on a side of the encapsulation layer EN away from the base substrate BS and on a side of the first cladding layer OC1 close to the base substrate BS.

[0127] In one example, the thickness of the encapsulation layer EN is in the range of 8 μm to 20 μm. In another example, the thickness of the first cladding layer OC1 is in the range of 2 μm to 5 μm. In another example, the thickness of the second cladding layer OC2 is in the range of 3 μm to 8 μm. In another example, the thickness of the insulating layer IN is in the range of 10 μm to 40 μm. In another example, the thickness of the third cladding layer OC3 is in the range of 2 μm to 4 μm.

[0128] In some embodiments, in a portion of the display panel having multiple second pixels, the orthographic projection of the first black matrix BM1 on the substrate BS at least partially overlaps with the orthographic projection of the pixel defining layer PDL on the substrate BS; the orthographic projection of the second black matrix BM2 on the substrate BS at least partially overlaps with the orthographic projection of the pixel defining layer PDL on the substrate BS.

[0129] In some embodiments, in a portion of the display panel having a plurality of second pixels, a portion of the first black matrix BM1 located between two adjacent sub-pixels has a third width w3 along a plane intersecting with the two adjacent sub-pixels and the portion of the first black matrix BM1 and perpendicular to the surface of the substrate BS, a portion of the second black matrix BM2 located between the same two adjacent sub-pixels has a fourth width w4 along a plane intersecting with the two adjacent sub-pixels and the portion of the second black matrix BM2 and perpendicular to the surface of the substrate BS, and a portion of the pixel defining layer PDL located between the same two adjacent sub-pixels has a fifth width w5 along a plane intersecting with the two adjacent sub-pixels and the portion of the pixel defining layer PDL and perpendicular to the surface of the substrate substrate BS.

[0130] Optionally, the third width w3 is substantially the same as the fifth width w5.

[0131] Optionally, the fourth width w4 is substantially the same as the fifth width w5.

[0132] Optionally, the third width w3 is substantially the same as the fourth width w4.

[0133] Optionally, the third width w3, the fourth width w4 and the fifth width w5 are substantially the same.

[0134] In some embodiments, in a portion of the display panel having a plurality of second pixels, the display panel further includes a light control structure LCF that at least partially extends through the insulating layer IN. Optionally, the light control structure LCF is connected to a portion of the first black matrix BM1 and to a portion of the second black matrix BM2. In one example, the light control structure LCF extends from a portion of the first black matrix BM1, through the insulating layer IN, and reaches a portion of the second black matrix BM2.

[0135] In some embodiments, the light control structure LCF is not disposed in a region between adjacent sub-pixels of different colors. In some embodiments, the light control structure LCF is disposed in at least one region between adjacent sub-pixels of the same color.

[0136] Various suitable methods may be used to form the light control structure LCF. For example, forming the light control structure LCF includes: forming a via extending through the insulating layer IN, and depositing a black material into the via, thereby forming the light control structure LCF. In another example, forming the light control structure LCF includes: coating a black material layer on the second cladding layer OC2, patterning the black material layer to form at least one sublayer of the light control structure LCF, and optionally repeating the coating and patterning steps at least once, thereby forming the light control structure LCF. Then, a layer of insulating material may be deposited on the substrate to flatten the substrate, thereby forming the insulating layer IN.

[0137] Fig.19 is a plan view of a first black matrix according to some embodiments of the present disclosure. Fig. 20 is a plan view of a second black matrix according to some embodiments of the present disclosure. Fig.21 is a superposition of the first black matrix and the second black matrix according to some embodiments of the present disclosure. Figures 19 to 21 The first black matrix BM1 is at least partially disposed in an area corresponding to a plurality of first pixel rows PR1 and a plurality of second pixel rows PR2, while the second black matrix BM2 is at least partially not disposed in an area corresponding to the plurality of first pixel rows PR1, and is at least partially disposed in an area corresponding to the plurality of second pixel rows PR2.

[0138] In some embodiments, the second black matrix BM2 is basically not set (for example, at least 50% not set, at least 55% not set, at least 60% not set, at least 65% not set, at least 70% not set, at least 75% not set, at least 80% not set, at least 85% not set, at least 90% not set, at least 95% not set, at least 99% not set, or not set at all) in the area corresponding to the plurality of first pixel rows PR1.

[0139] In some embodiments, in the area corresponding to multiple first pixel rows PR1, the orthographic projection of the first black matrix BM1 on the substrate and the orthographic projection of the second black matrix BM2 on the substrate do not basically overlap (for example, at least 50% non-overlapping, at least 55% non-overlapping, at least 60% non-overlapping, at least 65% non-overlapping, at least 70% non-overlapping, at least 75% non-overlapping, at least 80% non-overlapping, at least 85% non-overlapping, at least 90% non-overlapping, at least 95% non-overlapping, at least 99% non-overlapping, or no overlap at all).

[0140] In some embodiments, in an area corresponding to a plurality of second pixel rows PR2, an orthographic projection of the first black matrix BM1 on the substrate overlaps at least partially (for example, at least 10%, at least 15%, at least 20%, at least 25%, at least 30%, at least 35%, at least 40%, at least 45%, at least 50%, at least 55%, at least 60%, at least 65%, at least 70%, at least 75%, at least 80%, at least 85%, at least 90%, at least 95%, or at least 99%) with an orthographic projection of the second black matrix BM2 on the substrate.

[0141] In some embodiments, the second black matrix BM2 includes a plurality of strips BR, and the display panel includes a plurality of slits ST, and the plurality of strips BR and the plurality of slits ST are alternately arranged. Two adjacent strips in the plurality of strips BR are separated by a slit in the plurality of slits ST. Two adjacent slits in the plurality of slits ST are separated by a strip in the plurality of strips BR. The plurality of strips BR corresponds to the plurality of second pixel rows PR2. The plurality of slits ST corresponds to the plurality of first pixel rows PR1.

[0142] In some embodiments, the display panel includes a plurality of first openings AP1 extending through the first black matrix BM1 and a plurality of second openings AP2 extending through the first black matrix BM1. The plurality of first openings AP1 are configured to allow light emitted from a plurality of first light-emitting elements in a plurality of first sub-pixels to pass through, and the plurality of second openings AP2 are configured to allow light emitted from a plurality of second light-emitting elements in a plurality of second sub-pixels to pass through.

[0143] In some embodiments, the display panel includes a plurality of third openings AP3 extending through the second black matrix BM2. The plurality of third openings AP3 are configured to allow light emitted from the plurality of second light emitting elements in the plurality of second sub-pixels to pass therethrough.

[0144] In some embodiments, in a portion of the display panel having a plurality of second pixels, a second opening configured to allow light emitted from a second light emitting element to pass through among the plurality of second openings AP2 has a first opening width along a plane intersecting two adjacent second sub-pixels and perpendicular to the surface of the substrate, and a third opening configured to allow light emitted from the same second light emitting element to pass through among the plurality of third openings AP3 has a second opening width along a plane intersecting two adjacent second sub-pixels and perpendicular to the surface of the substrate. Optionally, the first opening width is substantially the same as the second opening width.

[0145] In some embodiments, the orthographic projection of an edge of a second opening among the plurality of second openings AP2 configured to allow light emitted from a second light-emitting element to pass through, and the orthographic projection of an edge of a third opening among the plurality of third openings AP3 configured to allow light emitted from the same second light-emitting element to pass through, on the substrate substrate, substantially (for example, at least 50%, at least 55%, at least 60%, at least 65%, at least 70%, at least 75%, at least 80%, at least 85%, at least 90%, at least 95%, at least 99%, or completely) overlap with each other.

[0146] The inventors of the present disclosure have found that when the display panel is operated in the second mode, the display panel having the structure according to the present disclosure can effectively reduce the anti-peeping viewing angle. In one example, the 45° brightness attenuation ratio of the left and right sides of the display panel according to the present disclosure can be reduced to 3%, and the 45° brightness attenuation ratio of the upper side of the display panel according to the present disclosure can be reduced to 3%.

[0147] Fig. 22 is a cross-sectional view of a plurality of first pixels in a portion of a display panel according to some embodiments of the present disclosure. Fig. 22 , the portion of the display panel having multiple first pixels includes: a base substrate BS; a pixel defining layer PDL, which is located on the base substrate BS and defines multiple first sub-pixel openings, and multiple first light-emitting elements LE1 are at least partially accommodated in the multiple first sub-pixel openings; an encapsulation layer EN, which is located on the side of the pixel defining layer PDL and the multiple first light-emitting elements LE1 away from the base substrate BS; a first cladding layer OC1, which is located on the side of the encapsulation layer EN away from the base substrate BS; a color film CF and a first black matrix BM1, which are located on the side of the first cladding layer OC1 away from the base substrate BS; a second cladding layer OC2, which is located on the side of the color film CF and the first black matrix BM1 away from the base substrate BS; a first insulating layer IN1, which is located on the side of the second cladding layer OC2 away from the base substrate BS; a second insulating layer IN2, which is located on the side of the first insulating layer IN1 away from the base substrate BS; and a third cladding layer OC3, which is located on the side of the second insulating layer IN2 away from the base substrate BS. Optionally, the display panel portion further includes a touch control structure, which is located on a side of the encapsulation layer EN away from the base substrate BS and on a side of the first cladding layer OC1 close to the base substrate BS.

[0148] In one example, the thickness of the encapsulation layer EN is in the range of 8 μm to 20 μm. In another example, the thickness of the first cladding layer OC1 is in the range of 2 μm to 5 μm. In another example, the thickness of the second cladding layer OC2 is in the range of 3 μm to 8 μm. In another example, the thickness of the insulating layer IN is in the range of 10 μm to 40 μm. In another example, the thickness of the third cladding layer OC3 is in the range of 2 μm to 4 μm.

[0149] In some embodiments, in a portion of the display panel having a plurality of first pixels, the orthographic projection of the first black matrix BM1 on the substrate BS overlaps at least partially with the orthographic projection of the pixel defining layer PDL on the substrate BS. In some embodiments, in a portion of the display panel having a plurality of first pixels, a portion of the first black matrix BM1 located between two adjacent sub-pixels has a first width w1 along a plane intersecting the two adjacent sub-pixels and the portion of the first black matrix BM1 and perpendicular to the surface of the substrate BS, and a portion of the pixel defining layer PDL located between the same two adjacent sub-pixels has a second width w2 along a plane intersecting the two adjacent sub-pixels and the portion of the pixel defining layer PDL and perpendicular to the surface of the substrate BS. Optionally, the first width w1 and the second width w2 are substantially the same.

[0150] Fig.23 is a cross-sectional view of a plurality of second pixels in a portion of a display panel according to some embodiments of the present disclosure. Fig.23 In some embodiments, the second black matrix BM2 includes a plurality of sublayers, such as a first sublayer BM2-1 and a second sublayer BM2-2. In some embodiments, the portion of the display panel having a plurality of second pixels includes: a base substrate BS; a pixel defining layer PDL, which is located on the base substrate BS and defines a plurality of second subpixel openings, and a plurality of second light-emitting elements LE2 are at least partially accommodated in the plurality of second subpixel openings; an encapsulation layer EN, which is located on a side of the pixel defining layer PDL and the plurality of second light-emitting elements LE2 away from the base substrate BS; a first cladding layer OC1, which is located on a side of the encapsulation layer EN away from the base substrate BS; a color film CF and a first black matrix BM1, which are located on a side of the first cladding layer OC1 away from the base substrate BS; a second cladding layer OC2, which is located between the color film CF and the first The side of the black matrix BM1 away from the substrate BS; the first insulating layer IN1, which is located on the side of the second cladding layer OC2 away from the substrate BS; the first sublayer BM2-1 of the second black matrix BM2, which is located on the side of the first insulating layer IN1 away from the substrate BS; the second insulating layer IN2, which is located on the side of the first sublayer BM2-1 of the second black matrix BM2 away from the substrate BS; the second sublayer BM2-2 of the second black matrix BM2, which is located on the side of the second insulating layer IN2 away from the substrate BS; and the third cladding layer OC3, which is located on the side of the second sublayer BM2-2 of the second black matrix BM2 away from the substrate BS. Optionally, the first black matrix BM1 is an integral structure extending in the portion of the display panel having multiple first pixels and the portion of the display panel having multiple second pixels. Optionally, the portion of the display panel also includes a touch structure, which is located on the side of the encapsulation layer EN away from the substrate BS and on the side of the first cladding layer OC1 close to the substrate BS.

[0151] In one example, the thickness of the encapsulation layer EN is in the range of 8μm to 20μm. In another example, the thickness of the first cladding layer OC1 is in the range of 2μm to 5μm. In another example, the thickness of the second cladding layer OC2 is in the range of 3μm to 8μm. In another example, the combined thickness of the first insulating layer IN1 and the second insulating layer IN2 is in the range of 10μm to 40μm. In another example, the thickness of the third cladding layer OC3 is in the range of 2μm to 4μm. In another example, the distance between two adjacent sublayers of the second black matrix BM2 is in the range of 5μm to 15μm. In some embodiments, the thickness of the first insulating layer IN1 is greater than the thickness of the third cladding layer OC3, greater than the thickness of the second cladding layer OC2, and greater than the thickness of the first cladding layer OC1. In some embodiments, the thickness of the second insulating layer IN2 is greater than the thickness of the third cladding layer OC3, greater than the thickness of the second cladding layer OC2, and greater than the thickness of the first cladding layer OC1.

[0152] In some embodiments, in a portion of the display panel having a plurality of second pixels, the orthographic projection of the first black matrix BM1 on the substrate substrate BS at least partially overlaps with the orthographic projection of the pixel defining layer PDL on the substrate substrate BS; the orthographic projection of the first sublayer BM2-1 of the second black matrix BM2 on the substrate substrate BS at least partially overlaps with the orthographic projection of the pixel defining layer PDL on the substrate substrate BS; and the orthographic projection of the second sublayer BM2-2 of the second black matrix BM2 on the substrate substrate BS at least partially overlaps with the orthographic projection of the pixel defining layer PDL on the substrate substrate BS.

[0153] In some embodiments, in a portion of the display panel having a plurality of second pixels, a portion of the first black matrix BM1 located between two adjacent sub-pixels has a third width w3 along a plane intersecting with the two adjacent sub-pixels and the portion of the first black matrix BM1 and perpendicular to the surface of the substrate BS, a portion of the first sublayer BM2-1 of the second black matrix BM2 located between the same two adjacent sub-pixels has a fourth width w4 along a plane intersecting with the two adjacent sub-pixels and the portion of the first sublayer BM2-1 and perpendicular to the surface of the substrate BS, a portion of the second sublayer BM2-2 of the second black matrix BM2 located between the same two adjacent sub-pixels has a fourth width w4 along a plane intersecting with the two adjacent sub-pixels and the portion of the second sublayer BM2-2 and perpendicular to the surface of the substrate substrate BS, and a portion of the pixel defining layer PDL located between the same two adjacent sub-pixels has a fifth width w5 along a plane intersecting with the two adjacent sub-pixels and the portion of the pixel defining layer PDL and perpendicular to the surface of the substrate substrate BS.

[0154] Optionally, the third width w3 is substantially the same as the fifth width w5.

[0155] Optionally, the fourth width w4 is substantially the same as the fifth width w5.

[0156] Optionally, the third width w3 is substantially the same as the fourth width w4.

[0157] Optionally, the third width w3, the fourth width w4 and the fifth width w5 are substantially the same.

[0158] Fig.24 is a cross-sectional view of a plurality of second pixels in a portion of a display panel in an alternative embodiment according to the present disclosure. Fig.24 In some embodiments, the second black matrix BM2 includes a plurality of sublayers, such as a first sublayer BM2-1, a second sublayer BM2-2, and a third sublayer BM2-3. In some embodiments, the portion of the display panel having a plurality of second pixels includes: a substrate BS; a pixel defining layer PDL, which is located on the substrate BS and defines a plurality of second subpixel openings, and a plurality of second light-emitting elements LE2 are at least partially accommodated in the plurality of second subpixel openings; an encapsulation layer EN, which is located on a side of the pixel defining layer PDL and the plurality of second light-emitting elements LE2 away from the substrate BS; a first cladding layer OC1, which is located on a side of the encapsulation layer EN away from the substrate BS; a color film CF and a first black matrix BM1, which are located on a side of the first cladding layer OC1 away from the substrate BS; a second cladding layer OC2, which is located on a side of the color film CF and the first black matrix BM1 away from the substrate BS; a first insulating layer IN1, which is located on a side of the second cladding layer OC2 away from the substrate The first black matrix BM2 is located on one side of the bottom substrate BS; the first sublayer BM2-1 of the second black matrix BM2 is located on the side of the first insulating layer IN1 away from the base substrate BS; the second insulating layer IN2 is located on the side of the first sublayer BM2-1 of the second black matrix BM2 away from the base substrate BS; the second sublayer BM2-2 of the second black matrix BM2 is located on the side of the second insulating layer IN2 away from the base substrate BS; the third insulating layer IN3 is located on the side of the second sublayer BM2-2 of the second black matrix BM2 away from the base substrate BS; the third sublayer BM2-3 of the second black matrix BM2 is located on the side of the third insulating layer IN3 away from the base substrate BS; and the third cladding layer OC3 is located on the side of the third sublayer BM2-3 of the second black matrix BM2 away from the base substrate BS. Optionally, the first black matrix BM1 is an integral structure extending in a portion of the display panel having a plurality of first pixels and a portion of the display panel having a plurality of second pixels. Optionally, the display panel portion further includes a touch control structure, which is located on a side of the encapsulation layer EN away from the base substrate BS and on a side of the first cladding layer OC1 close to the base substrate BS.

[0159] In one example, the thickness of the encapsulation layer EN is in the range of 8 μm to 20 μm. In another example, the thickness of the first cladding layer OC1 is in the range of 2 μm to 5 μm. In another example, the thickness of the second cladding layer OC2 is in the range of 3 μm to 8 μm. In another example, the combined thickness of the first insulating layer IN1, the second insulating layer IN2, and the third insulating layer is in the range of 10 μm to 40 μm. In another example, the thickness of the third cladding layer OC3 is in the range of 2 μm to 4 μm. In another example, the distance between two adjacent sublayers of the second black matrix BM2 is in the range of 5 μm to 15 μm.

[0160] In some embodiments, in a portion of the display panel having a plurality of second pixels, the orthographic projection of the first black matrix BM1 on the substrate substrate BS at least partially overlaps with the orthographic projection of the pixel defining layer PDL on the substrate substrate BS; the orthographic projection of the first sublayer BM2-1 of the second black matrix BM2 on the substrate substrate BS at least partially overlaps with the orthographic projection of the pixel defining layer PDL on the substrate substrate BS; the orthographic projection of the second sublayer BM2-2 of the second black matrix BM2 on the substrate substrate BS at least partially overlaps with the orthographic projection of the pixel defining layer PDL on the substrate substrate BS; and the orthographic projection of the third sublayer BM2-3 of the second black matrix BM2 on the substrate substrate BS at least partially overlaps with the orthographic projection of the pixel defining layer PDL on the substrate substrate BS.

[0161] In some embodiments, in a portion of the display panel having a plurality of second pixels, a portion of the first black matrix BM1 located between two adjacent sub-pixels has a third width w3 along a plane intersecting the two adjacent sub-pixels and the portion of the first black matrix BM1 and perpendicular to the surface of the substrate BS, a portion of the first sublayer BM2-1 of the second black matrix BM2 located between the same two adjacent sub-pixels has a fourth width w4 along a plane intersecting the two adjacent sub-pixels and the portion of the first sublayer BM2-1 and perpendicular to the surface of the substrate BS, and a portion of the second sublayer BM2-2 of the second black matrix BM2 located between the same two adjacent sub-pixels has a fourth width w5. The portion between the two adjacent sub-pixels has a fourth width w4 along a plane intersecting with the two adjacent sub-pixels and the portion of the second sub-layer BM2-2 and perpendicular to the surface of the substrate BS, the portion of the third sub-layer BM2-3 of the second black matrix BM2 located between the same two adjacent sub-pixels has a fourth width w4 along a plane intersecting with the two adjacent sub-pixels and the portion of the third sub-layer BM2-3 and perpendicular to the surface of the substrate BS, and the portion of the pixel defining layer PDL located between the same two adjacent sub-pixels has a fifth width w5 along a plane intersecting with the two adjacent sub-pixels and the portion of the pixel defining layer PDL and perpendicular to the surface of the substrate substrate BS.

[0162] Fig.25is a plan view of a first black matrix according to some embodiments of the present disclosure. Fig.26 is a plan view of a second black matrix according to some embodiments of the present disclosure. Fig. 27 It is a superposition of the first black matrix and the second black matrix according to some embodiments of the present disclosure. Fig.26 and Fig. 27 The second black matrix BM2 depicted in FIG. 1 may include a plurality of sub-layers (eg, Fig.23 The two sublayers shown in Fig.24 ). Figure 25 to Figure 27 The first black matrix BM1 is at least partially disposed in an area corresponding to a plurality of first pixel rows PR1 and a plurality of second pixel rows PR2, while the second black matrix BM2 is at least partially not disposed in an area corresponding to the plurality of first pixel rows PR1, and is at least partially disposed in an area corresponding to the plurality of second pixel rows PR2.

[0163] In some embodiments, any sublayer of the second black matrix BM2 is substantially not set (for example, at least 50% not set, at least 55% not set, at least 60% not set, at least 65% not set, at least 70% not set, at least 75% not set, at least 80% not set, at least 85% not set, at least 90% not set, at least 95% not set, at least 99% not set, or not set at all) in the area corresponding to the plurality of first pixel rows PR1.

[0164] In some embodiments, in the area corresponding to multiple first pixel rows PR1, the orthographic projection of the first black matrix BM1 on the substrate and the orthographic projection of any sublayer of the second black matrix BM2 on the substrate do not basically overlap (for example, at least 50% non-overlapping, at least 55% non-overlapping, at least 60% non-overlapping, at least 65% non-overlapping, at least 70% non-overlapping, at least 75% non-overlapping, at least 80% non-overlapping, at least 85% non-overlapping, at least 90% non-overlapping, at least 95% non-overlapping, at least 99% non-overlapping, or no overlap at all).

[0165] In some embodiments, in an area corresponding to a plurality of second pixel rows PR2, an orthographic projection of the first black matrix BM1 on the substrate overlaps at least partially (for example, at least 10%, at least 15%, at least 20%, at least 25%, at least 30%, at least 35%, at least 40%, at least 45%, at least 50%, at least 55%, at least 60%, at least 65%, at least 70%, at least 75%, at least 80%, at least 85%, at least 90%, at least 95%, or at least 99%) with an orthographic projection of at least a sublayer of the second black matrix BM2 on the substrate.

[0166] In some embodiments, each sublayer of the second black matrix BM2 includes a plurality of strips BR, and the display panel includes a plurality of slits ST, and the plurality of strips BR and the plurality of slits ST are alternately arranged. Two adjacent strips in the plurality of strips BR are separated by a slit in the plurality of slits ST. Two adjacent slits in the plurality of slits ST are separated by a strip in the plurality of strips BR. The plurality of strips BR corresponds to the plurality of second pixel rows PR2. The plurality of slits ST corresponds to the plurality of first pixel rows PR1.

[0167] In some embodiments, the display panel includes a plurality of first openings AP1 extending through the first black matrix BM1 and a plurality of second openings AP2 extending through the first black matrix BM1. The plurality of first openings AP1 are configured to allow light emitted from a plurality of first light-emitting elements in a plurality of first sub-pixels to pass through, and the plurality of second openings AP2 are configured to allow light emitted from a plurality of second light-emitting elements in a plurality of second sub-pixels to pass through.

[0168] In some embodiments, the display panel includes a plurality of third openings AP3 extending through at least one sublayer of the second black matrix BM2. The plurality of third openings AP3 are configured to allow light emitted from the plurality of second light emitting elements in the plurality of second subpixels to pass therethrough.

[0169] In some embodiments, in a portion of the display panel having a plurality of second pixels, a second opening configured to allow light emitted from a second light emitting element to pass through among the plurality of second openings AP2 has a first opening width along a plane intersecting two adjacent second sub-pixels and perpendicular to the surface of the substrate, and a third opening configured to allow light emitted from the same second light emitting element to pass through among the plurality of third openings AP3 has a second opening width along a plane intersecting two adjacent second sub-pixels and perpendicular to the surface of the substrate. Optionally, the first opening width is substantially the same as the second opening width.

[0170] In some embodiments, the orthographic projection of an edge of a second opening among the plurality of second openings AP2 configured to allow light emitted from a second light-emitting element to pass through, and the orthographic projection of an edge of a third opening among the plurality of third openings AP3 configured to allow light emitted from the same second light-emitting element to pass through, on the substrate substrate, substantially (for example, at least 50%, at least 55%, at least 60%, at least 65%, at least 70%, at least 75%, at least 80%, at least 85%, at least 90%, at least 95%, at least 99%, or completely) overlap with each other.

[0171] The inventors of the present disclosure have found that when the display panel is operated in the second mode, the display panel having the structure according to the present disclosure can effectively reduce the anti-peeping viewing angle. In one example, the 45° brightness attenuation ratio of the left and right sides of the display panel according to the present disclosure can be reduced to 0.5%, and the 45° brightness attenuation ratio of the upper side of the display panel according to the present disclosure can be reduced to 0.5%.

[0172] Fig.28 1 shows various parameters of a display panel in some embodiments of the present disclosure. Fig.28 , the portion of the first black matrix BM1 located between two adjacent sub-pixels has a third width w3 along a plane intersecting the two adjacent sub-pixels and the portion of the first black matrix BM1 and perpendicular to the surface of the substrate BS, and the portion of the second black matrix BM2 located between the same two adjacent sub-pixels has a fourth width w4 along a plane intersecting the two adjacent sub-pixels and the portion of the second black matrix BM2 and perpendicular to the surface of the substrate BS. The first sub-pixel has a first sub-pixel width d1 along a plane intersecting the two adjacent sub-pixels and the portion of the pixel defining layer PDL and perpendicular to the surface of the substrate. The second sub-pixel has a second sub-pixel width d2 along a plane intersecting the two adjacent sub-pixels and the portion of the pixel defining layer PDL and perpendicular to the surface of the substrate. The third sub-pixel has a third sub-pixel width d3 along a plane intersecting the two adjacent sub-pixels and the portion of the pixel defining layer PDL and perpendicular to the surface of the substrate BS. The first black matrix BM1 is spaced apart from the corresponding sub-pixel by a distance h1. The second black matrix BM2 is spaced apart from the first black matrix BM1 by a distance h2. The emission angle θ of each sub-pixel satisfies the following condition: arctanθ is in the range of d / ((h1+h2)-0.1*(h1+h2)) to d / ((h1+h2)+0.1*(h1+h2)), where d is the sub-pixel width of each sub-pixel along a plane that intersects two adjacent sub-pixels and a portion of the pixel defining layer PDL and is perpendicular to the surface of the substrate.

[0173] Fig.29 FIG. 4 shows the correlation between brightness attenuation and viewing angle in some embodiments of the present disclosure. Fig.29As shown, when the viewing angle increases from 0 degrees to 40 degrees, the brightness attenuation decreases to nearly zero. In Example 1, d1=d2=d3=9.5μm; w3=w4=7μm; h1=12μm; h2=11μm; and θ is 22.4 degrees. In Example 2, d1=d2=d3=9.5μm, w3=7μm, w4=5μm, h1=12μm, h2=11μm; and θ is 24.5 degrees. In Example 3, d1=d2=d3=9.5μm, w3=5μm, w4=5μm, h1=12μm, h2=11μm; and θ is 24.5 degrees.

[0174] In some embodiments, the display panel further includes a lens layer having a plurality of lenses. Various suitable embodiments may be practiced in the present disclosure. Fig.30 is a cross-sectional view of a plurality of second pixels in a portion of a display panel according to some embodiments of the present disclosure. Fig.30 , the portion of the display panel having multiple second pixels includes: a substrate BS; a pixel defining layer PDL, which is located on the substrate BS and defines multiple second sub-pixel openings, and multiple second light-emitting elements LE2 are at least partially accommodated in the multiple second sub-pixel openings; an encapsulation layer EN, which is located on the side of the pixel defining layer PDL and the multiple second light-emitting elements LE2 away from the substrate BS; a first cladding layer OC1, which is located on the side of the encapsulation layer EN away from the substrate BS; a lens layer LEL and a first black matrix BM1, which are located on the side of the first cladding layer OC1 away from the substrate BS; a second cladding layer OC2, which is located on the side of the lens layer LEL and the first black matrix BM1 away from the substrate BS; an insulating layer IN, which is located on the side of the second cladding layer OC2 away from the substrate BS; a second black matrix BM2, which is located on the side of the insulating layer IN away from the substrate BS; and a third cladding layer OC3, which is located on the side of the second black matrix BM2 away from the substrate substrate BS. Optionally, the first black matrix BM1 is an integral structure extending in a portion of the display panel having a plurality of first pixels and a portion of the display panel having a plurality of second pixels. Optionally, the portion of the display panel further includes a touch structure, which is located on a side of the encapsulation layer EN away from the base substrate BS and on a side of the first cladding layer OC1 close to the base substrate BS.

[0175] In some embodiments, in a portion of the display panel having multiple second pixels, the orthographic projection of the first black matrix BM1 on the substrate BS at least partially overlaps with the orthographic projection of the pixel defining layer PDL on the substrate BS; the orthographic projection of the second black matrix BM2 on the substrate BS at least partially overlaps with the orthographic projection of the pixel defining layer PDL on the substrate BS.

[0176] In some embodiments, the lens layer LEL includes a plurality of lenses. In some embodiments, in a portion of the display panel having a plurality of second pixels, an orthographic projection of each of the plurality of lenses on the base substrate BS at least partially overlaps with an orthographic projection of the second light emitting element LE2 on the base substrate. The inventors of the present disclosure have found that by providing a lens layer LEL, brightness attenuation can be further reduced.

[0177] Fig.31 is a cross-sectional view of a plurality of second pixels in a portion of a display panel according to some embodiments of the present disclosure. Fig.31 , the portion of the display panel having multiple second pixels includes: a substrate BS; a pixel defining layer PDL, which is located on the substrate BS and defines multiple second sub-pixel openings, and multiple second light-emitting elements LE2 are at least partially accommodated in the multiple second sub-pixel openings; an encapsulation layer EN, which is located on the side of the pixel defining layer PDL and the multiple second light-emitting elements LE2 away from the substrate BS; a first cladding layer OC1, which is located on the side of the encapsulation layer EN away from the substrate BS; a color film CF and a first black matrix BM1, which are located on the side of the first cladding layer OC1 away from the substrate BS; a second cladding layer OC2, which is located on the side of the color film CF and the first black matrix BM1 away from the substrate BS; an insulating layer IN, which is located on the side of the second cladding layer OC2 away from the substrate BS; a lens layer LEL and a second black matrix BM2, which are located on the side of the insulating layer IN away from the substrate BS; and a third cladding layer OC3, which is located on the side of the lens layer LEL and the second black matrix BM2 away from the substrate BS. Optionally, the first black matrix BM1 is an integral structure extending in a portion of the display panel having a plurality of first pixels and a portion of the display panel having a plurality of second pixels. Optionally, the portion of the display panel further includes a touch structure, which is located on a side of the encapsulation layer EN away from the base substrate BS and on a side of the first cladding layer OC1 close to the base substrate BS.

[0178] In some embodiments, in a portion of the display panel having multiple second pixels, the orthographic projection of the first black matrix BM1 on the substrate BS at least partially overlaps with the orthographic projection of the pixel defining layer PDL on the substrate BS; the orthographic projection of the second black matrix BM2 on the substrate BS at least partially overlaps with the orthographic projection of the pixel defining layer PDL on the substrate BS.

[0179] In some embodiments, the lens layer LEL includes a plurality of lenses. In some embodiments, in a portion of the display panel having a plurality of second pixels, an orthographic projection of each of the plurality of lenses on the base substrate BS at least partially overlaps with an orthographic projection of the second light emitting element LE2 on the base substrate. The inventors of the present disclosure have found that by providing a lens layer LEL, brightness attenuation can be further reduced.

[0180] Fig.32 is a cross-sectional view of a plurality of second pixels in a portion of a display panel according to some embodiments of the present disclosure. Fig.32 , the portion of the display panel having multiple second pixels includes: a substrate BS; a pixel defining layer PDL, which is located on the substrate BS and defines multiple second sub-pixel openings, and multiple second light-emitting elements LE2 are at least partially accommodated in the multiple second sub-pixel openings; an encapsulation layer EN, which is located on the side of the pixel defining layer PDL and the multiple second light-emitting elements LE2 away from the substrate BS; a first cladding layer OC1, which is located on the side of the encapsulation layer EN away from the substrate BS; a color film CF and a first black matrix BM1, which are located on the side of the first cladding layer OC1 away from the substrate BS; a second cladding layer OC2, which is located on the side of the color film CF and the first black matrix BM1 away from the substrate BS; an insulating layer IN, which is located on the side of the second cladding layer OC2 away from the substrate BS; a second black matrix BM2, which is located on the side of the insulating layer IN away from the substrate BS; a third cladding layer OC3, which is located on the side of the second black matrix BM2 away from the substrate BS; and a lens layer LEL, which is located on the side of the third cladding layer OC3 away from the substrate substrate BS. Optionally, the first black matrix BM1 is an integral structure extending in a portion of the display panel having a plurality of first pixels and a portion of the display panel having a plurality of second pixels. Optionally, the portion of the display panel further includes a touch structure, which is located on a side of the encapsulation layer EN away from the base substrate BS and on a side of the first cladding layer OC1 close to the base substrate BS.

[0181] In some embodiments, in a portion of the display panel having multiple second pixels, the orthographic projection of the first black matrix BM1 on the substrate BS at least partially overlaps with the orthographic projection of the pixel defining layer PDL on the substrate BS; the orthographic projection of the second black matrix BM2 on the substrate BS at least partially overlaps with the orthographic projection of the pixel defining layer PDL on the substrate BS.

[0182] In some embodiments, the lens layer LEL includes a plurality of lenses. In some embodiments, in a portion of the display panel having a plurality of second pixels, an orthographic projection of each of the plurality of lenses on the base substrate BS at least partially overlaps with an orthographic projection of the second light emitting element LE2 on the base substrate. The inventors of the present disclosure have found that by providing a lens layer LEL, brightness attenuation can be further reduced.

[0183] Fig.33 Various parameters in a display panel according to some embodiments of the present disclosure are shown. Fig.34 Various parameters in a display panel according to some embodiments of the present disclosure are shown. Fig.35Various parameters in a display panel according to some embodiments of the present disclosure are shown. Fig.36 1 shows various parameters of a display panel in some embodiments of the present disclosure. Figure 33 to Figure 36 , the portion of the first black matrix BM1 located between two adjacent sub-pixels has a third width w3 along a plane intersecting the two adjacent sub-pixels and the portion of the first black matrix BM1 and perpendicular to the surface of the substrate BS, and the portion of the second black matrix BM2 located between the same two adjacent sub-pixels has a fourth width w4 along a plane intersecting the two adjacent sub-pixels and the portion of the second black matrix BM2 and perpendicular to the surface of the substrate BS. The first sub-pixel has a first sub-pixel width d1 along a plane intersecting the two adjacent sub-pixels and the portion of the pixel defining layer PDL and perpendicular to the surface of the substrate. The second sub-pixel has a second sub-pixel width d2 along a plane intersecting the two adjacent sub-pixels and the portion of the pixel defining layer PDL and perpendicular to the surface of the substrate. The third sub-pixel has a third sub-pixel width d3 along a plane intersecting the two adjacent sub-pixels and the portion of the pixel defining layer PDL and perpendicular to the surface of the substrate BS. The first black matrix BM1 is spaced apart from the corresponding sub-pixel by a distance h1. The second black matrix BM2 is spaced apart from the first black matrix BM1 by a distance h2. The emission angle θ of each subpixel satisfies arctanθ=d / (h1+h2), where d is the subpixel width of each subpixel along a plane intersecting two adjacent subpixels and a portion of the pixel defining layer PDL and perpendicular to the surface of the substrate. Fig.33 The display panel depicted in does not include a lens layer. Figure 34 to Figure 36 The display panel depicted in FIG. 1 includes a lens layer.

[0184] Fig.37 The correlation between the brightness attenuation and the viewing angle in some embodiments according to the present disclosure is shown. In Example 4, d1=d2=d3=9.5μm; w3=7μm; w4=5μm; h1=12μm; h2=7μm; and θ is 28.9 degrees. As shown in Example 4, when the viewing angle increases from 0 degrees to 40 degrees, the brightness attenuation decreases to nearly zero.

[0185] In Example 5, d1=d2=d3=9.5μm; w3=7μm; w4=5μm; h1=12μm; h2=7μm; and θ is 28.9 degrees. The diameter of the bottom surface of each lens in the plurality of lenses is 14.3μm. The pitch of the plurality of lenses is 2.2μm. The height of each lens is 5μm. The refractive index of each lens is 1.7. The refractive index of one or more insulating layers in direct contact with each lens is 1.53.

[0186] In Example 6, d1=d2=d3=9.5μm; w3=5μm; w4=5μm; h1=12μm; h2=11μm; and θ is 24.5 degrees. The diameter of the bottom surface of each lens in the plurality of lenses is 14.3μm. The pitch of the plurality of lenses is 2.2μm. The height of each lens is 5μm. The refractive index of each lens is 1.7. The refractive index of one or more insulating layers in direct contact with each lens is 1.53.

[0187] In Example 7, d1=d2=d3=9.5μm; w3=5μm; w4=5μm; h1=12μm; h2=11μm; and θ is 24.5 degrees. The diameter of the bottom surface of each lens in the plurality of lenses is 14.3μm. The pitch of the plurality of lenses is 2.2μm. The height of each lens is 5μm. The refractive index of each lens is 1.7. The refractive index of one or more insulating layers in direct contact with each lens is 1.53.

[0188] As shown in Examples 5 to 7, when the viewing angle increases from 0 degrees to an angle less than 40 degrees (eg, 25 degrees to 40 degrees), the brightness attenuation decreases to nearly zero.

[0189] In another aspect, the present disclosure provides a display device, including the display panel described herein and one or more integrated circuits connected to the display panel. Examples of suitable display devices include, but are not limited to, electronic paper, mobile phones, tablet computers, televisions, monitors, notebook computers, digital photo albums, GPS, etc.

[0190] For the purpose of illustration and description, the above description of the embodiments of the present invention has been given. It is not exhaustive, nor is it intended to limit the present invention to the precise form or exemplary embodiments disclosed. Therefore, the foregoing description should be considered illustrative rather than restrictive. Obviously, many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described to explain the principles of the present invention and its best mode practical application, so that those skilled in the art can understand the various embodiments of the present invention and the various modifications suitable for the specific use or implementation under consideration. The scope of the present invention is intended to be defined by the appended claims and their equivalents, wherein all terms are meant to have the broadest reasonable meaning unless otherwise stated. Therefore, the term "the present invention" and the like do not necessarily limit the scope of the claims to a specific embodiment, and the reference to the exemplary embodiments of the present invention does not mean a limitation of the present invention, and such limitation should not be inferred. The present invention is limited only by the spirit and scope of the appended claims. In addition, these claims may involve the use of "first", "second", etc., followed by a noun or element. These terms should be understood as nomenclature, and should not be interpreted as limiting the number of elements modified by these nomenclatures, unless a specific number has been given. Any advantages and benefits described may not apply to all embodiments of the present invention. It should be understood that those skilled in the art may make changes to the described embodiments without departing from the scope of the present invention as defined by the appended claims. In addition, the elements and assemblies in this disclosure are not intended to be contributed to the public, regardless of whether the element or assembly is clearly described in the appended claims.

Claims

1. A display panel, include: a plurality of first pixels; a plurality of second pixels; First black matrix; and a second black matrix; Wherein, the first black matrix is ​​at least partially disposed in a region having the plurality of first pixels and a region having the plurality of second pixels; as well as The second black matrix is ​​at least partially disposed in the region having the plurality of second pixels, and is at least partially not disposed in the region having the plurality of first pixels.

2. The display panel according to claim 1, in, The second black matrix is ​​substantially not disposed in the region having the plurality of first pixels; In the region having the plurality of first pixels, an orthographic projection of the first black matrix on the base substrate and an orthographic projection of the second black matrix on the base substrate do not substantially overlap; as well as In the region having the plurality of second pixels, the orthographic projection of the first black matrix on the base substrate at least partially overlaps with the orthographic projection of the second black matrix on the base substrate.

3. The display panel according to claim 1, in, The second black matrix comprises a plurality of strips; The display panel includes a plurality of slits; The plurality of strips and the plurality of slits are arranged alternately; Two adjacent strips of the plurality of strips are separated by a slit of the plurality of slits; as well as Two adjacent slits of the plurality of slits are separated by a stripe of the plurality of stripes.

4. The display panel according to any one of claims 1 to 3, further comprising a pixel defining layer, wherein the pixel defining layer defines a plurality of first sub-pixel openings in the region having the plurality of first pixels, and defines a plurality of second sub-pixel openings in the region having the plurality of second pixels; in, In the region having the plurality of first pixels, a portion of the first black matrix located between two adjacent sub-pixels has a first width along a plane intersecting the two adjacent sub-pixels and the portion of the first black matrix and being perpendicular to the surface of the substrate, and a portion of the pixel defining layer located between the same two adjacent sub-pixels has a second width along a plane intersecting the two adjacent sub-pixels and the portion of the pixel defining layer and being perpendicular to the surface of the substrate, wherein the second width is greater than the first width; as well as In the area having the plurality of second pixels, a portion of the first black matrix located between two adjacent sub-pixels has a third width along a plane intersecting the two adjacent sub-pixels and the portion of the first black matrix and perpendicular to the surface of the substrate, and a portion of the pixel defining layer located between the same two adjacent sub-pixels has a fifth width along a plane intersecting the two adjacent sub-pixels and the portion of the pixel defining layer and perpendicular to the surface of the substrate, and the third width is substantially the same as the fifth width.

5. The display panel according to claim 4, in, In the region having the plurality of second pixels, a portion of the second black matrix located between the same two adjacent sub-pixels has a fourth width along a plane intersecting the two adjacent sub-pixels and the portion of the second black matrix and perpendicular to the surface of the base substrate; and The fourth width is greater than the fifth width.

6. The display panel according to claim 4, in, In the region having the plurality of second pixels, a portion of the second black matrix located between the same two adjacent sub-pixels has a fourth width along a plane intersecting the two adjacent sub-pixels and the portion of the second black matrix and perpendicular to the surface of the base substrate; and The fourth width is substantially the same as the fifth width.

7. The display panel according to any one of claims 1 to 6, include: a plurality of first openings extending through the first black matrix; a plurality of second openings extending through the first black matrix; as well as a plurality of third openings extending through the second black matrix; The plurality of first openings are configured to allow light emitted from the plurality of first light emitting elements in the plurality of first sub-pixels to pass therethrough; The plurality of second openings are configured to allow light emitted from the plurality of second light emitting elements in the plurality of second sub-pixels to pass therethrough; as well as The plurality of third openings are configured to allow light emitted from the plurality of second light emitting elements in the plurality of second sub-pixels to pass therethrough; Among them, in the portion of the display panel having the multiple second pixels, a second opening among the multiple second openings configured to allow light emitted from the second light-emitting element to pass through has a first opening width along a plane that intersects with two adjacent second sub-pixels and is perpendicular to the surface of the substrate, and a third opening among the multiple third openings configured to allow light emitted from the same second light-emitting element to pass through has a second opening width along the plane that intersects with the two adjacent second sub-pixels and is perpendicular to the surface of the substrate.

8. The display panel according to claim 7, in, The first opening width is greater than the second opening width.

9. The display panel according to claim 7, in, An orthographic projection of an edge of the second opening on the substrate substantially surrounds an orthographic projection of an edge of the third opening on the substrate.

10. The display panel according to claim 7, in, The first opening width and the second opening width are substantially the same.

11. The display panel according to claim 7, in, An orthographic projection of an edge of the second opening on the substrate and an orthographic projection of an edge of the third opening on the substrate substantially overlap with each other.

12. The display panel according to claim 1, in, In the region having the plurality of second pixels, the device further includes: an insulating layer separating the first black matrix from the second black matrix; and a light control structure extending at least partially through the insulating layer; The light control structure is connected to a portion of the first black matrix and to a portion of the second black matrix.

13. The display panel according to any one of claims 1 to 12, in, The second black matrix includes a plurality of sub-layers; Two adjacent sub-layers among the plurality of sub-layers are separated by an insulating layer; and Orthographic projections of the plurality of sub-layers on the substrate substantially overlap with each other.

14. The display panel according to any one of claims 1 to 13, further comprising a lens layer, wherein the lens layer comprises a plurality of lenses; in, In the region having the plurality of second pixels, an orthographic projection of each lens of the plurality of lenses on the base substrate at least partially overlaps with an orthographic projection of the second light emitting element on the base substrate.

15. The display panel according to claim 14, include: a first coating layer; The plurality of lenses and the first black matrix are located on the first cladding layer; A second cladding layer is located on a side of the plurality of lenses and the first black matrix away from the first cladding layer; and The second black matrix is ​​located on a side of the second cladding layer away from the plurality of lenses and the first black matrix.

16. The display panel according to claim 14, include: a first coating layer; The first black matrix is ​​located on the first cladding layer; A second cladding layer, which is located on a side of the first black matrix away from the first cladding layer; and The plurality of lenses and the second black matrix are located on a side of the second cladding layer away from the first black matrix.

17. The display panel according to claim 14, include: a first coating layer; The first black matrix is ​​located on the first cladding layer; a second cladding layer, which is located on a side of the first black matrix away from the first cladding layer; as well as The second black matrix is ​​located on a side of the second cladding layer away from the first black matrix; A third cladding layer is located on a side of the second black matrix away from the second cladding layer; and The multiple lenses are located on a side of the third cladding layer away from the second black matrix.

18. The display panel according to any one of claims 1 to 17, comprising a plurality of first pixel rows and a plurality of second pixel rows arranged alternately; Two adjacent first pixel rows of the plurality of first pixel rows are separated by a single second pixel row of the plurality of second pixel rows; Two adjacent second pixel rows of the plurality of second pixel rows are separated by a single first pixel row of the plurality of first pixel rows; Each first pixel row of the plurality of first pixel rows includes a plurality of pixels of the plurality of first pixels; Each second pixel row of the plurality of second pixel rows includes a plurality of second pixels of the plurality of second pixels; Each of the plurality of first pixels includes a first sub-pixel, a second sub-pixel, and a third sub-pixel; and Each of the plurality of second pixels includes a plurality of fourth sub-pixels, a plurality of fifth sub-pixels, and a plurality of sixth sub-pixels.

19. A display panel, include: a plurality of first pixels; a plurality of second pixels; First black matrix; and a second black matrix; Wherein, in the region having the plurality of first pixels, the orthographic projection of the first black matrix on the base substrate and the orthographic projection of the second black matrix on the base substrate do not substantially overlap; as well as In the region having the plurality of second pixels, the orthographic projection of the first black matrix on the base substrate at least partially overlaps with the orthographic projection of the second black matrix on the base substrate.

20. A display device comprising a display panel according to any one of claims 1 to 19, and one or more integrated circuits connected to the display panel.

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