Display panel and display device

Abstract

The utility model discloses a display panel and a display device. The display panel comprises a substrate, a pixel defining layer and a plurality of light-emitting elements which are located on the same side of the substrate. A plurality of first openings are formed in the pixel defining layer, and the light-emitting elements are located in the first openings; the color film layer is located on the side, away from the substrate, of the pixel defining layer and the light-emitting element; the color film layer comprises a first sub-layer and a second sub-layer, and the first sub-layer and the second sub-layer are stacked in sequence; the first sub-layer comprises a plurality of first color resistors with different colors, the orthographic projection of the first color resistors on the substrate covers the orthographic projection of the light-emitting element on the substrate, and the orthographic projection of the first color resistors and the orthographic projection of the pixel defining layer on the substrate are at least partially overlapped; the second sub-layer comprises a plurality of second color resistors with different colors, the orthographic projections of the second color resistors and the light-emitting elements on the substrate are not overlapped, the orthographic projection of the second color resistors on the substrate is overlapped with the orthographic projection overlapping area of the first color resistors and the pixel defining layer on the substrate, and the colors of the second color resistors and the first color resistors which are overlapped by orthographic projection are different.

Description

Technical Field

[0001] This disclosure pertains to the field of display technology, specifically relating to a display panel and a display device. Background Technology

[0002] OLED (Organic Light-Emitting Diode) displays have attracted widespread attention due to their advantages such as self-illumination, low power consumption, thinness, flexibility, vibrant colors, high contrast, and fast response speed. Utility Model Content

[0003] In a first aspect, embodiments of this disclosure provide a display panel, which includes a substrate.

[0004] A pixel defining layer and multiple light-emitting elements are located on the same side of the substrate;

[0005] The pixel defining layer has multiple first openings, and the light-emitting element is located in the first opening;

[0006] A color filter layer is located on the side of the pixel defining layer and the light-emitting element that is away from the substrate;

[0007] The color filter layer includes a first sub-layer and a second sub-layer, which are stacked sequentially.

[0008] The first sub-layer includes a plurality of first color resists of different colors, the orthographic projection of the first color resists on the substrate covers the orthographic projection of the light-emitting element on the substrate, and the orthographic projections of the first color resists and the pixel defining layer on the substrate at least partially overlap;

[0009] The second sub-layer includes multiple second color resists of different colors. The orthographic projections of the second color resists and the light-emitting element on the substrate do not overlap. The orthographic projections of the second color resists on the substrate overlap with the orthographic projections of the first color resist and the pixel defining layer on the substrate, and the colors of the second color resists and the first color resists in the overlapping orthographic projection area are different.

[0010] In some embodiments, the color filter layer further includes a third sublayer, which is stacked sequentially with the first sublayer and the second sublayer;

[0011] The third sub-layer includes multiple third color resists of different colors. The orthographic projections of the third color resists and the light-emitting element on the substrate do not overlap. The orthographic projections of the third color resists on the substrate overlap with the orthographic projections of the first color resist and the pixel defining layer on the substrate. The orthographic projections of the third color resists and the second color resist on the substrate at least partially overlap.

[0012] The third, second, and first color resists, when projected onto each other, have different colors.

[0013] In some embodiments, the plurality of light-emitting elements are arranged in an array;

[0014] Multiple first color resists are arranged in an array;

[0015] Each of the first color resists and the multiple light-emitting elements corresponds one-to-one;

[0016] Each second color resist corresponds to a column of first color resists, and the orthographic projection of each second color resist on the substrate lies within the orthographic projection of a column of first color resists on the substrate;

[0017] The second color resists of different colors are arranged alternately along the row direction of the array.

[0018] In some embodiments, the plurality of light-emitting elements are arranged in an array;

[0019] Multiple first color resists are arranged in an array;

[0020] Each of the first color resists and the multiple light-emitting elements corresponds one-to-one;

[0021] Multiple second-color resists are arranged in an array;

[0022] Each second color resist corresponds to one first color resist, and the orthographic projection of each second color resist on the substrate lies within the orthographic projection of one first color resist on the substrate.

[0023] In some embodiments, the plurality of the third color resists are arranged in an array;

[0024] Each of the third color resists corresponds to one of the first color resists, and the orthographic projection of each of the third color resists on the substrate lies within the orthographic projection of one of the first color resists on the substrate.

[0025] In some embodiments, the first color resist includes a red first color resist, a green first color resist, and a blue first color resist.

[0026] In the array of the first color resists, the green first color resists and the blue first color resists are arranged alternately in odd-numbered columns, and the red first color resists and the green first color resists are arranged alternately in even-numbered columns; or, the red first color resists and the green first color resists are arranged alternately in odd-numbered columns, and the green first color resists and the blue first color resists are arranged alternately in even-numbered columns.

[0027] In some embodiments, the second color resist includes a red second color resist and a blue second color resist, wherein the red second color resist corresponds to the first color resist in the odd-numbered column and the blue second color resist corresponds to the first color resist in the even-numbered column;

[0028] Alternatively, the red second color resistor corresponds to the first color resistor in the even-numbered column, and the blue second color resistor corresponds to the first color resistor in the odd-numbered column.

[0029] In some embodiments, the second color resist includes a red second color resist and a green second color resist.

[0030] The red second color resistor corresponds one-to-one with the green first color resistor, a portion of the green second color resistor corresponds one-to-one with the red first color resistor, and another portion of the green second color resistor corresponds one-to-one with the blue first color resistor.

[0031] In some embodiments, the second color resist includes a green second color resist and a blue second color resist.

[0032] The blue second color resistor corresponds one-to-one with the green first color resistor, a portion of the green second color resistor corresponds one-to-one with the red first color resistor, and another portion of the green second color resistor corresponds one-to-one with the blue first color resistor.

[0033] In some embodiments, the third color resistor includes a red third color resistor, a green third color resistor, and a blue third color resistor.

[0034] The red third color resistor corresponds to the green second color resistor and the blue first color resistor, the green third color resistor corresponds to the blue second color resistor and the red first color resistor, and the blue third color resistor corresponds to the red second color resistor and the green first color resistor.

[0035] In some embodiments, the second color resist has at least one second opening.

[0036] The second opening corresponds one-to-one with the light-emitting element;

[0037] The first opening corresponds one-to-one with the light-emitting element;

[0038] The orthographic projection of the first opening on the substrate lies within the orthographic projection of the second opening on the substrate, and the opening area of ​​the first opening is smaller than the opening area of ​​the second opening.

[0039] In some embodiments, the first sublayer, the second sublayer, and the third sublayer are stacked sequentially along a direction away from the substrate;

[0040] The third color resist has a third opening.

[0041] The third opening corresponds one-to-one with the light-emitting element;

[0042] The orthographic projections of the second opening and the third opening on the substrate at least partially overlap.

[0043] In some embodiments, a planarization layer is further included, located on the side of the color filter layer opposite to the substrate, wherein the orthographic projection of the planarization layer on the substrate covers the color filter layer, and the surface of the side of the planarization layer opposite to the substrate is flush.

[0044] The planarization layer has scattering particles added to the region of the pixel-defining layer that does not overlap with the orthographic projection of the second color resist on the substrate; and / or, the planarization layer has scattering particles added to the region of the pixel-defining layer that does not overlap with the orthographic projection of the third color resist on the substrate.

[0045] In some embodiments, adjacent first color filters are mated together;

[0046] The adjacent second color resistors are connected to each other;

[0047] The adjacent third color resistors are connected to each other.

[0048] Secondly, embodiments of this disclosure also provide a display device, which includes the aforementioned display panel.

[0049] The display panel provided in this embodiment has a lower transmittance for visible light and a higher transmittance for infrared light in the overlapping area of ​​the orthographic projection of the second and first color resists. This can replace the black matrix in the color filter layer of related technologies, thereby not only enabling the color filter layer to reduce the reflectivity of the display panel to external light, but also improving the infrared transmittance of the display panel. In addition, the first and second sub-layers are stacked in sequence, which further ensures the flatness of the color filter layer compared to the color filter layer containing the black matrix in related technologies, and improves or eliminates the color separation phenomenon of the display panel when the screen is off.

[0050] The display device provided in this embodiment of the present disclosure, by employing the above-described display panel, can reduce the reflectivity of the display device to external light, improve the infrared light transmittance of the display device, and also improve or eliminate the color separation phenomenon of the display device when the screen is off. Attached Figure Description

[0051] The accompanying drawings are provided to further illustrate the embodiments of this disclosure and form part of the specification. They are used together with the embodiments of this disclosure to explain the disclosure and do not constitute a limitation thereof. The above and other features and advantages will become more apparent to those skilled in the art from the detailed description of exemplary embodiments with reference to the accompanying drawings, in which:

[0052] Figure 1a For the display panel edge in the embodiments of this disclosure Figure 1c A cross-sectional view of the DD' section line.

[0053] Figure 1b This is a schematic diagram showing the distribution of the first color resist in the display panel according to an embodiment of this disclosure.

[0054] Figure 1c In order to be in Figure 1b A schematic diagram of the distribution of the second color resist based on the above.

[0055] Figure 2a For the display panel edge in the embodiments of this disclosure Figure 2b A cross-sectional view of the EE' section line.

[0056] Figure 2b In order to be in Figure 1b Another schematic diagram of the distribution of the second color resist based on the above.

[0057] Figure 3a For the display panel edge in the embodiments of this disclosure Figure 3b A cross-sectional view of the FF' section line.

[0058] Figure 3b In order to be in Figure 1b A schematic diagram of another distribution of the second color resist based on the above.

[0059] Figure 4 This is a transmittance curve of the color filter layer in an embodiment of this disclosure.

[0060] Figure 5 This is a partial cross-sectional view of another display panel in an embodiment of the present disclosure.

[0061] Figure 6a For along Figure 7a A cross-sectional view of the GG' section line.

[0062] Figure 6b For along Figure 7b A cross-sectional view of the HH' section line.

[0063] Figure 6c For along Figure 7c Schematic diagram of the cross section at section II'.

[0064] Figure 7a In order to be in Figure 1c A schematic diagram of the distribution of the third color resist based on the above.

[0065] Figure 7b In order to be in Figure 2b A schematic diagram of the distribution of the third color resist based on the above.

[0066] Figure 7cIn order to be in Figure 3b A schematic diagram of the distribution of the third color resist based on the above.

[0067] Figure 8a This is a partial cross-sectional view of another display panel in an embodiment of the present disclosure.

[0068] Figure 8b This is a top view schematic diagram of a touch layer in an embodiment of this disclosure.

[0069] Figure 8c This is a partial cross-sectional view of another display panel in an embodiment of the present disclosure. Detailed Implementation

[0070] To enable those skilled in the art to better understand the technical solutions of the embodiments of this disclosure, a display panel and display device provided in the embodiments of this disclosure will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0071] Embodiments of this disclosure will be described more fully below with reference to the accompanying drawings; however, the embodiments shown may be embodied in different forms and should not be construed as limited to the embodiments set forth in this disclosure. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will enable those skilled in the art to fully understand the scope of this disclosure.

[0072] This disclosure is not limited to the embodiments shown in the accompanying drawings, but includes modifications to the configuration based on the manufacturing process. Therefore, the areas illustrated in the drawings are schematic, and the shapes of the areas shown illustrate specific shapes of the areas, but are not intended to be limiting.

[0073] In related technologies, COE (Color filter on Encapsulation) technology involves creating a color filter layer above the encapsulation layer of an organic light-emitting device (OLED device). The color filter layer includes a black matrix (BM) and a color filter (CF). The color filter layer reduces the reflectivity of the OLED display panel to external light, thus replacing the circular polarizer originally placed on the display side of the OLED display panel.

[0074] However, the color filter layer in the related technology has low transmittance in the infrared band; and when preparing the color filter layer, since the black matrix is ​​prepared first and then the color resist is prepared, the color filter layer will be uneven; in addition, the color filter layer containing the black matrix has severe color separation when the display panel is off, that is, when the display panel is off and a flashlight is shone from its display side, light diffraction will occur at the opening in the black matrix used to accommodate the color resist.

[0075] To address the aforementioned problems in the related art, in a first aspect, embodiments of this disclosure provide a display panel, referring to... Figure 1a For the display panel edge in the embodiments of this disclosure Figure 1c A cross-sectional view of the DD' section line; Figure 1c The DD' section line only sections the display panel at the solid line position, and does not section the display panel at the dashed line position; Figure 1b This is a schematic diagram showing the distribution of the first color resist in the display panel according to an embodiment of this disclosure; Figure 1c In order to be in Figure 1b A schematic diagram of the distribution of the second color resist based on the above; Figure 2a For the display panel edge in the embodiments of this disclosure Figure 2b A cross-sectional view of the EE' section line; Figure 2b In order to be in Figure 1b Another schematic diagram of the distribution of the second color resist based on the above; Figure 3a For the display panel edge in the embodiments of this disclosure Figure 3b A cross-sectional view of the FF' section line; Figure 3b In order to be in Figure 1b A schematic diagram of another distribution of the second color resist based on the above; Figure 4 This is a transmittance curve of the color filter layer in an embodiment of this disclosure; Figure 5 This is a partial cross-sectional view of another display panel in an embodiment of the present disclosure; Figure 6a For along Figure 7a A cross-sectional view of the GG' section line; Figure 7a The GG' section line only cuts the display panel at the solid line position, and does not cut the display panel at the dashed line position; Figure 6b For along Figure 7b A cross-sectional view of the HH' section line;

[0076] Figure 6c For along Figure 7c Schematic diagram of the cross section along section line II'; Figure 7a In order to be in Figure 1c A schematic diagram of the distribution of the third color resist based on the above. Figure 7b In order to be in Figure 2b A schematic diagram of the distribution of the third color resist based on the above. Figure 7c In order to be in Figure 3b A schematic diagram of the distribution of the third color resist based on the above. Figure 8a This is a partial cross-sectional view of another display panel in an embodiment of the present disclosure; Figure 8b This is a top view schematic diagram of a touch layer in an embodiment of this disclosure; Figure 8cThis is a partial cross-sectional view of another display panel according to an embodiment of the present disclosure; wherein, the display panel includes a substrate 1, a pixel defining layer 2, and a plurality of light-emitting elements 3, located on the same side of the substrate 1; the pixel defining layer 2 has a plurality of first openings 20, and the light-emitting elements 3 are located in the first openings 20; a color filter layer 4 is located on the side of the pixel defining layer 2 and the light-emitting elements 3 facing away from the substrate 1; the color filter layer 4 includes a first sub-layer 41 and a second sub-layer 42, the first sub-layer 41 and the second sub-layer 42 being stacked sequentially; the first sub-layer 41 includes a plurality of first color resists 410 of different colors, The orthographic projection of the first color resist 410 on the substrate 1 covers the orthographic projection of the light-emitting element 3 on the substrate 1, and the orthographic projections of the first color resist 410 and the pixel defining layer 2 on the substrate 1 at least partially overlap; the second sub-layer 42 includes a plurality of second color resists 420 of different colors, the orthographic projections of the second color resist 420 and the light-emitting element 3 on the substrate 1 do not overlap, the orthographic projections of the second color resist 420 on the substrate 1 overlap with the overlapping area of ​​the orthographic projections of the first color resist 410 and the pixel defining layer 2 on the substrate 1, and the colors of the second color resist 420 and the first color resist 410 that overlap in orthographic projection are different.

[0077] The orthographic projection of the second color resist 420 onto the substrate 1 lies within the overlapping area of ​​the orthographic projections of the first color resist 410 and the pixel defining layer 2 onto the substrate 1. The orthographic projections of the second color resist 420 and any light-emitting element 3 onto the substrate 1 do not overlap. Adjacent first color resists 410 are mated together. Due to manufacturing process errors, the adjacent positions of two adjacent first color resists 410 can slightly overlap or slightly be spaced apart; however, the arrangement of the first color resist 410 and the second color resist 420 can essentially replace the polarizer to improve or prevent the display panel from reflecting ambient light.

[0078] In this embodiment, refer to Figure 4 The overlapping area of ​​the orthographic projection of the second color resist 420 and the first color resist 410 has a high transmittance of infrared light and can replace the black matrix in the color filter layer of related technologies. This not only enables the color filter layer 4 to reduce the reflectivity of the display panel to external light, but also improves the infrared light transmittance of the display panel. In addition, the first sub-layer 41 and the second sub-layer 42 are stacked in sequence. Compared with the color filter layer containing the black matrix in related technologies, this can further ensure the flatness of the color filter layer 4, and at the same time improve or eliminate the color separation phenomenon of the display panel when the screen is off.

[0079] In some embodiments, refer to Figure 1a , Figure 1b and Figure 1c , Figure 1a It is along Figure 1cA cross-sectional view of the DD' section line; multiple light-emitting elements 3 are arranged in an array; multiple first color resists 410 are arranged in an array; multiple first color resists 410 and multiple light-emitting elements 3 correspond one-to-one; each second color resist 420 corresponds to a column of first color resists 410, and the orthographic projection of each second color resist 420 on the substrate 1 is located within the orthographic projection of a column of first color resists 410 on the substrate 1; second color resists 420 of different colors are arranged alternately along the row direction X of the array.

[0080] In this configuration, four adjacent light-emitting elements 3 in both rows and columns constitute a pixel; the four adjacent light-emitting elements 3 in both rows and columns are arranged in a matrix; and four adjacent first color resists 410 in both rows and columns constitute a first color resist unit corresponding to the pixel. A second color resist 420 corresponds to the orthographic projection of a column of first color resists 410 onto the substrate 1.

[0081] In some embodiments, each second color resist 420 corresponds to a row of first color resist 410, and the orthographic projection of each second color resist 420 on the substrate 1 is located within the orthographic projection of a row of first color resist 410 on the substrate 1; second color resists 420 of different colors are arranged alternately along the column direction of the array.

[0082] In some embodiments, the arrangement of the light-emitting elements 3 in the pixel is not limited to Figure 1b The arrangement of the first color resist in the first color resist unit is not limited to the arrangement of the first color resist 410 in the first color resist unit. Figure 1b The arrangement of the second color resist 420 is not limited to the arrangement of the color resist in the image; furthermore, the arrangement of the second color resist 420 is not limited to the arrangement of the second color resist 420 in the image. Figure 1c The arrangement of elements.

[0083] In some embodiments, refer to Figure 2a , Figure 2b , Figure 3a and Figure 3b Multiple light-emitting elements 3 are arranged in an array; multiple first color resists 410 are arranged in an array; multiple first color resists 410 and multiple light-emitting elements 3 correspond one-to-one; multiple second color resists 420 are arranged in an array; each second color resist 420 corresponds to one first color resist 410, and the orthographic projection of each second color resist 420 on the substrate 1 is located within the orthographic projection of one first color resist 410 on the substrate 1.

[0084] In this design, two adjacent second color resists 420 are connected to each other. Due to manufacturing process errors, the adjacent positions of the two adjacent second color resists 420 can overlap slightly or be slightly spaced apart. The adjacent positions of the two adjacent second color resists 420 and their corresponding adjacent first color resists 410 are directly projected onto the substrate 1.

[0085] In some embodiments, the display panel may simultaneously employ Figure 1c , Figure 2b and Figure 3b The distribution of the second color resist 420 in the display panel can be configured such that the display area can be divided into multiple zones, and each zone can be selected to use... Figure 1c , Figure 2b or Figure 3b The distribution pattern of the second color resist 420 in at least three regions is different.

[0086] In some embodiments, refer to Figure 1b The first color resistor 410 includes a red first color resistor 410A, a green first color resistor 410B, and a blue first color resistor 410C. In the array of the first color resistors 410, the green first color resistor 410B and the blue first color resistor 410C are arranged alternately in odd-numbered columns, and the red first color resistor 410A and the green first color resistor 410B are arranged alternately in even-numbered columns; or, the red first color resistor 410A and the green first color resistor 410B are arranged alternately in odd-numbered columns, and the green first color resistor 410B and the blue first color resistor 410C are arranged alternately in even-numbered columns.

[0087] In this arrangement, four adjacent light-emitting elements 3 in both rows and columns constitute one pixel; the four adjacent light-emitting elements 3 in both rows and columns are arranged in a matrix; one red first color resist 410A, one blue first color resist 410C, and two green first color resists 410B in both rows and columns correspond to the four light-emitting elements 3 in one pixel. One red first color resist 410A, one blue first color resist 410C, and two green first color resists 410B in both rows and columns are arranged in a matrix; the red first color resist 410A and the blue first color resist 410C are located in one diagonal position of the matrix, and the two green first color resists 410B are located in another diagonal position of the matrix.

[0088] In some embodiments, refer to Figure 1a and Figure 1c The second color resistor 420 includes a red second color resistor 420A and a blue second color resistor 420C. The red second color resistor 420A corresponds to the first color resistor 410 in the odd-numbered column, and the blue second color resistor 420C corresponds to the first color resistor 410 in the even-numbered column; or, the red second color resistor 420A corresponds to the first color resistor 410 in the even-numbered column, and the blue second color resistor 420C corresponds to the first color resistor 410 in the odd-numbered column.

[0089] In some embodiments, refer to Figure 2a and Figure 2b , Figure 2a It is along Figure 2bA cross-sectional schematic diagram of the EE' section line; the second color resist 420 includes a red second color resist 420A and a green second color resist 420B. The red second color resist 420A and the green first color resist 410B correspond one-to-one. A portion of the green second color resist 420B and the red first color resist 410A correspond one-to-one. Another portion of the green second color resist 420B and the blue first color resist 410C correspond one-to-one.

[0090] In some embodiments, the second color resist 420 includes a red second color resist 420A and a green second color resist 420B. A portion of the red second color resist 420A corresponds one-to-one with the green first color resist 410B, and the green second color resist 420B corresponds one-to-one with the red first color resist 410A. Another portion of the red second color resist 420A corresponds one-to-one with the blue first color resist 410C.

[0091] In some embodiments, the second color resist 420 may also include a red second color resist 420A and a blue second color resist 420C, with a portion of the red second color resist 420A corresponding one-to-one with the green first color resist 410B, and the blue second color resist 420C corresponding one-to-one with the red first color resist 410A, and another portion of the red second color resist 420A corresponding one-to-one with the blue first color resist 410C.

[0092] In some embodiments, the second color resist 420 may also include a red second color resist 420A and a blue second color resist 420C, with a portion of the blue second color resist 420C corresponding one-to-one with the green first color resist 410B; and another portion of the blue second color resist 420C corresponding one-to-one with the red first color resist 410A, and the red second color resist 420A corresponding one-to-one with the blue first color resist 410C.

[0093] In some embodiments, refer to Figure 3a and Figure 3b , Figure 3a It is along Figure 3b A cross-sectional schematic diagram of the FF' section line; the second color resist 420 includes a green second color resist 420B and a blue second color resist 420C. The blue second color resist 420C corresponds one-to-one with the green first color resist 410B. A portion of the green second color resist 420B corresponds one-to-one with the red first color resist 410A, and another portion of the green second color resist 420B corresponds one-to-one with the blue first color resist 410C.

[0094] In some embodiments, the second color resist 420 includes a green second color resist 420B and a blue second color resist 420C. A portion of the blue second color resist 420C corresponds one-to-one with the green first color resist 410B, and another portion of the blue second color resist 420C corresponds one-to-one with the red first color resist 410A. The green second color resist 420B corresponds one-to-one with the blue first color resist 410C.

[0095] In some embodiments, refer to Figure 1c , Figure 2b and Figure 3b The second color resist 420 has at least one second opening Q, which corresponds one-to-one with the light-emitting element 3; the first opening 20 also corresponds one-to-one with the light-emitting element 3; the orthographic projection of the first opening 20 on the substrate 1 lies within the orthographic projection of the second opening Q on the substrate 1, and the opening area of ​​the first opening 20 is smaller than the opening area of ​​the second opening Q. This arrangement avoids the overlapping area of ​​the orthographic projections of the first color resist 410 and the second color resist 420 from obstructing the light-emitting area of ​​the light-emitting element 3, thereby ensuring the light-emitting angle range of the light-emitting element 3, such as ensuring that the light-emitting angle range of the light-emitting element 3 is within ±60°, and thus ensuring that the display viewing angle range of the display panel is met.

[0096] In some embodiments, refer to Figure 1a , Figure 2a and Figure 3a In the first opening 20 and the second opening Q whose orthographic projections overlap, the distance s between the edges of the first opening 20 and the edges of the second opening Q projected onto the substrate 1 ranges from 3 to 6 μm. This arrangement avoids the overlapping area of ​​the orthographic projections of the first color resist 410 and the second color resist 420 from blocking the light-emitting area of ​​the light-emitting element 3, thereby ensuring the light-emitting angle range of the light-emitting element 3.

[0097] In some embodiments, the orthographic projection shape of the first opening 20 on the substrate 1 includes a rectangle, a circle, an ellipse, an inverted ellipse, or a polygon; the orthographic projection shape of the second opening Q on the substrate 1 includes a rectangle, a circle, an ellipse, an inverted ellipse, or a polygon. An inverted ellipse refers to two opposite sides, one of which is a circle and the other is an ellipse.

[0098] In some embodiments, the orthographic projection shape of the first opening 20 and the second opening Q corresponding to the red first color resist 410A on the substrate 1 is circular; the orthographic projection shape of the first opening 20 and the second opening Q corresponding to the green first color resist 410B on the substrate 1 is circular; and the orthographic projection shape of the first opening 20 and the second opening Q corresponding to the blue first color resist 410C on the substrate 1 is an inverted ellipse. The inverted ellipses of the first opening 20 and the second opening Q corresponding to the blue first color resist 410C in four adjacent pixels in both rows and columns are oriented differently. This ensures that, on the one hand, the diffraction pattern of the light-emitting element 3 (i.e., the blue sub-pixel) corresponding to the blue first color resist 410C is circular, and on the other hand, the diffraction pattern of the entire pixel is circular, thereby making the pixel's diffraction pattern uniform and improving the display effect of the display panel.

[0099] In some embodiments, refer to Figure 5The display panel also includes a planarization layer 5, located on the side of the color filter layer 4 away from the substrate 1. The orthographic projection of the planarization layer 5 on the substrate 1 covers the color filter layer 4, and the surface of the side of the planarization layer 5 away from the substrate 1 is flush. Scattering particles 6 are added to the area of ​​the corresponding pixel defining layer 2 of the planarization layer 5 that does not overlap with the orthographic projection of the second color resist 420 on the substrate 1.

[0100] The surface plane of the planarization layer 5 facing away from the substrate 1 may not be completely flush. The addition of scattering particles 6 in the area where the corresponding pixel defining layer 2 of the planarization layer 5 does not overlap with the orthographic projection of the second color resist 420 on the substrate 1 can disperse the light reflected by the anode of the light-emitting element 3 when the display panel is not lit, thereby improving the color separation phenomenon of the display panel when the screen is off. When the display panel is lit, the light emitted by the light-emitting element 3 is dispersed by the scattering particles 6, which can increase the light emission angle of the light-emitting element 3, thereby increasing the display viewing angle of the display panel and improving the problem of brightness decay at a large viewing angle.

[0101] In some embodiments, while the scattering particles 6 are distributed in the area of ​​the corresponding pixel defining layer 2 of the planarization layer 5 that does not overlap with the orthographic projection of the second color resist 420 on the substrate 1, they can also be distributed in the area of ​​the corresponding light-emitting element 3 of the planarization layer 5. This can also increase the light emission angle of the light-emitting element 3, thereby increasing the display viewing angle of the display panel and improving the problem of brightness decay at a large viewing angle of the display panel.

[0102] In some embodiments, the material of the scattering particles 6 is gold foil, silver foil, aluminum foil, silicon dioxide, or titanium dioxide.

[0103] In some embodiments, refer to Figure 6a , Figure 6b and Figure 6c Based on the above embodiments, the color filter layer 4 further includes a third sub-layer 43, which is stacked sequentially with the first sub-layer 41 and the second sub-layer 42. The third sub-layer 43 includes a plurality of third color resists 430 of different colors. The orthographic projections of the third color resists 430 and the light-emitting element 3 on the substrate 1 do not overlap. The orthographic projections of the third color resists 430 on the substrate 1 overlap with the overlapping area of ​​the orthographic projections of the first color resist 410 and the pixel defining layer 2 on the substrate 1. The orthographic projections of the third color resists 430 and the second color resists 420 on the substrate 1 at least partially overlap. The colors of the orthographically overlapping third color resists 430, second color resists 420 and first color resists 410 are different.

[0104] The orthographic projection of the third color resist 430 on the substrate 1 lies within the overlapping area of ​​the orthographic projections of the first color resist 410 and the pixel defining layer 2 on the substrate 1. The orthographic projections of the third color resist 430 and any light-emitting element 3 on the substrate 1 do not overlap. Adjacent third color resists 430 are mated together; due to manufacturing process errors, the adjacent positions of adjacent third color resists 430 may slightly overlap or be slightly spaced. The orthographic projections of two adjacent third color resists 430 and their corresponding adjacent first color resists 410 on the substrate 1 coincide. The overlapping area of ​​the orthographic projections of the third color resist 430, the second color resist 420, and the first color resist 410 has low transmittance for visible light and high transmittance for infrared light. It can replace the black matrix in the color filter layer of related technologies, thereby enabling the color filter layer 4 to further reduce the reflectivity of the display panel to external light while ensuring the infrared transmittance of the display panel.

[0105] In some embodiments, refer to Figures 6a-6c and Figures 7a-7c Based on the above embodiments, a plurality of third color resists 430 are arranged in an array; each third color resist 430 corresponds to a first color resist 410, and the orthographic projection of each third color resist 430 on the substrate 1 is located within the orthographic projection of a first color resist 410 on the substrate 1.

[0106] Here, four adjacent third color resists 430 in both rows and columns constitute a third color resist unit corresponding to a pixel. Four adjacent third color resists 430 in both rows and columns constitute a third color resist unit corresponding to a first color resist unit.

[0107] In some embodiments, refer to Figures 6a-6c and Figures 7a-7c , Figure 6a For along Figure 7a A cross-sectional view of the GG' section line; Figure 6b For along Figure 7b A cross-sectional view of the HH' section line; Figure 6c For along Figure 7c A cross-sectional view of the section line II'; Based on the above embodiment, the third color resist 430 includes a red third color resist 430A, a green third color resist 430B, and a blue third color resist 430C. The red third color resist 430A corresponds to the green second color resist 420B and the blue first color resist 410C. The green third color resist 430B corresponds to the blue second color resist 420C and the red first color resist 410A. The blue third color resist 430C corresponds to the red second color resist 420A and the green first color resist 410B.

[0108] In this arrangement, one red third color resist 430A, one blue third color resist 430C, and two green third color resists 430B, which are adjacent in both rows and columns, correspond to the four light-emitting elements 3 in one pixel. The red third color resist 430A, one blue third color resist 430C, and two green third color resists 430B, which are adjacent in both rows and columns, are arranged in a matrix; the red third color resist 430A and the blue third color resist 430C are located in one diagonal position of the matrix, and the two green third color resists 430B are located in the other diagonal position of the matrix.

[0109] In some embodiments, the display panel may simultaneously employ Figure 7a , Figure 7b and Figure 7c The distribution of the third color resist 430 in the display panel can be configured such that the display area can be divided into multiple zones, and each zone can be selected to use... Figure 7a , Figure 7b or Figure 7c The distribution pattern of the third color resistor 430 in the at least three regions is different.

[0110] In some embodiments, refer to Figures 7a-7c The first sublayer 41, the second sublayer 42 and the third sublayer 43 are stacked sequentially in a direction away from the substrate 1; the third color resist 430 has a third opening P, and the third opening P corresponds one-to-one with the light-emitting element 3; the orthogonal projections of the second opening Q and the third opening P on the substrate 1 at least partially overlap.

[0111] In some embodiments, the orthographic projection of the second opening Q on the substrate 1 lies within the orthographic projection of the third opening P on the substrate 1, and the opening area of ​​the second opening Q is less than or equal to the opening area of ​​the third opening P. This configuration avoids the overlapping areas of the orthographic projections of the first color resist 410, the second color resist 420, and the third color resist 430 from obstructing the light-emitting area of ​​the light-emitting element 3, thereby ensuring the light-emitting angle range of the light-emitting element 3.

[0112] In some embodiments, the orthographic projection shape of the third opening P on the substrate 1 includes a rectangle, a circle, an ellipse, an inverted ellipse, or a polygon.

[0113] In some embodiments, the orthographic projection shapes of the first opening 20, second opening Q, and third opening P corresponding to the red first color resist 410A on the substrate 1 are circular; the orthographic projection shapes of the first opening 20, second opening Q, and third opening P corresponding to the green first color resist 410B on the substrate 1 are circular; and the orthographic projection shapes of the first opening 20, second opening Q, and third opening P corresponding to the blue first color resist 410C on the substrate 1 are inverted ellipses. The inverted ellipses of the first opening 20, second opening Q, and third opening P corresponding to the blue first color resist 410C in four adjacent pixels (row and column adjacent) have different directions. This ensures that the diffraction pattern of the light-emitting element 3 (i.e., the blue sub-pixel) corresponding to the blue first color resist 410C is circular, and also that the diffraction pattern of the entire pixel is circular, thereby making the pixel diffraction pattern uniform and improving the display effect of the display panel.

[0114] In some embodiments, referring to FIG8, in Figure 5 Based on the display panel structure, scattering particles 6 are added to the area where the corresponding pixel defining layer 2 of the planarization layer 5 does not overlap with the orthographic projection of the third color resist 430 on the substrate 1.

[0115] The addition of scattering particles 6 in the area where the corresponding pixel defining layer 2 of the planarization layer 5 and the orthogonal projection of the second color resist 420 on the substrate 1 do not overlap, and the addition of scattering particles 6 in the area where the corresponding pixel defining layer 2 of the planarization layer 5 and the orthogonal projection of the third color resist 430 on the substrate 1 do not overlap, allows the light reflected by the anode of the light-emitting element 3 to be scattered by the scattering particles 6 when the display panel is not lit, thereby improving the color separation phenomenon of the display panel when the screen is off; when the display panel is lit, the light emitted by the light-emitting element 3 is scattered by the scattering particles 6, which can increase the light emission angle of the light-emitting element 3, thereby increasing the display viewing angle of the display panel, and thus improving the problem of brightness decay at a large viewing angle of the display panel.

[0116] In some embodiments, refer to Figure 1b , Figure 1c , Figure 2b , Figure 3b and Figures 7a-7c The orthographic projection shape of the first color resist 410 on the substrate 1 includes a rectangle, a circle, or a polygon; the orthographic projection shape of the second color resist 420 on the substrate 1 includes a rectangle, a strip, a circle, or a polygon; and the orthographic projection shape of the third color resist 430 on the substrate 1 includes a rectangle, a circle, or a polygon.

[0117] In some embodiments, the thickness of the first sublayer 41 ranges from 1.5 to 5 μm; the total thickness of the second sublayer 42 and the third sublayer 43 ranges from 1 to 4 μm.

[0118] In some embodiments, the thickness of the first color resist 410 of different colors in the first sublayer 41 may be different; the thickness of the second color resist 420 of different colors in the second sublayer 42 may be different; and the thickness of the third color resist 430 of different colors in the third sublayer 43 may be different.

[0119] In some embodiments, adjacent first color resists 410 are mated together; adjacent second color resists 420 are mated together; and adjacent third color resists 430 are mated together.

[0120] In some embodiments, the light-emitting element 3 includes an organic light-emitting element (OLED), a stacked organic light-emitting element (Tandom OLED), a quantum dot organic light-emitting element (QDOLED), a light-emitting diode (LED), a micro-LED (including mini-LED or micro-LED), or an LCD (Liquid Crystal Display).

[0121] In some embodiments, the display panel may further include a color conversion layer, wherein all light-emitting elements 3 may emit the same color, for example, all light-emitting elements 3 emit blue light; or, for example, all light-emitting elements 3 emit white light. The color conversion layer may include quantum dot layers (QD films) of different colors, such as a red quantum dot layer, a green quantum dot layer, and a white resin layer; for example, blue light emitted by the light-emitting element 3 is emitted as red light after passing through the red quantum dot layer, as green light after passing through the green quantum dot layer, and as blue light after passing through the white resin layer.

[0122] In some embodiments, refer to Figure 1a , Figure 2a , Figure 3a , Figures 6a-6c , Figure 5 and Figure 8a The display panel also includes an encapsulation layer 7 and a touch layer 8, located between the color filter layer 4 and the light-emitting element 3, and the encapsulation layer 7 and the touch layer 8 are stacked sequentially in a direction away from the substrate 1. The encapsulation layer 7 is used to encapsulate the light-emitting element 3; the touch layer 8 enables touch control of the display panel.

[0123] In some embodiments, refer to Figure 8b and Figure 8cThe touch layer 8 includes a first electrode layer 81 and a second electrode layer 82. The first electrode layer 81 includes multiple driving electrode strips 810 and multiple sensing electrode blocks 811. The multiple driving electrode strips 810 are arranged sequentially along the first direction Y. The multiple sensing electrode blocks 811 are arranged in an array. The second electrode layer 82 includes multiple bridging portions 820, which are arranged in an array. Multiple sensing electrode blocks 811 located in the same column are connected by multiple bridging portions 820 located in the same column to form a sensing electrode strip. Multiple columns of sensing electrode blocks 811 and multiple columns of bridging portions 820 are connected one-to-one to form multiple sensing electrode strips. The multiple sensing electrode strips are arranged sequentially along the second direction X. The first direction Y and the second direction X intersect.

[0124] In some embodiments, refer to Figure 8b and Figure 8c The second electrode layer 82 and the first electrode layer 81 are stacked sequentially in a direction away from the encapsulation layer 7, and a first insulating layer 9 is disposed between the second electrode layer 82 and the first electrode layer 81. The display panel also includes an organic insulating layer 10 disposed between the first electrode layer 81 and the color filter layer 4, and an impedance layer 11 disposed between the second electrode layer 82 and the encapsulation layer 7. The orthographic projections of the second electrode layer 82 and the first electrode layer 81 on the substrate 1 do not overlap with the orthographic projections of the light-emitting element 3 on the substrate, thereby preventing the touch layer 8 from blocking the light emitted by the light-emitting element 3.

[0125] The display panel provided in this embodiment has a higher transmittance of infrared light due to the overlapping area of ​​the orthographic projection of the second color resist and the first color resist. This can replace the black matrix in the color filter layer of related technologies, thereby not only enabling the color filter layer to reduce the reflectivity of the display panel to external light, but also improving the infrared light transmittance of the display panel. In addition, the first sub-layer and the second sub-layer are stacked in sequence, which can further ensure the flatness of the color filter layer compared to the color filter layer containing the black matrix in related technologies, and at the same time improve or eliminate the color separation phenomenon of the display panel when the screen is off.

[0126] Secondly, embodiments of this disclosure also provide a display device, including the display panel described in the above embodiments.

[0127] By using the display panel in the above embodiments, the reflectivity of the display device to external light can be reduced, the infrared light transmittance of the display device can be increased, and the color separation phenomenon of the display device when the screen is off can be improved or eliminated.

[0128] The display device provided in this disclosure can be any product or component with display function, such as an OLED panel, a Tandom OLED panel, a QDOLED panel, an OLED TV, an OLED billboard, a monitor, a mobile phone, or a navigator.

[0129] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of this disclosure, and this disclosure is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and substance of this disclosure, and these modifications and improvements are also considered to be within the scope of protection of this disclosure.

Claims

1. A display panel, wherein, Including substrate, A pixel defining layer and multiple light-emitting elements are located on the same side of the substrate; The pixel defining layer has multiple first openings, and the light-emitting element is located in the first opening; A color filter layer is located on the side of the pixel defining layer and the light-emitting element that is away from the substrate; The color filter layer includes a first sub-layer and a second sub-layer, which are stacked sequentially. The first sub-layer includes a plurality of first color resists of different colors, the orthographic projection of the first color resists on the substrate covers the orthographic projection of the light-emitting element on the substrate, and the orthographic projections of the first color resists and the pixel defining layer on the substrate at least partially overlap; The second sub-layer includes multiple second color resists of different colors. The orthographic projections of the second color resists and the light-emitting element on the substrate do not overlap. The orthographic projections of the second color resists on the substrate overlap with the orthographic projections of the first color resist and the pixel defining layer on the substrate, and the colors of the second color resists and the first color resists in the overlapping orthographic projection area are different.

2. The display panel according to claim 1, wherein, The color filter layer further includes a third sub-layer, which is stacked sequentially with the first sub-layer and the second sub-layer; The third sub-layer includes multiple third color resists of different colors. The orthographic projections of the third color resists and the light-emitting element on the substrate do not overlap. The orthographic projections of the third color resists on the substrate overlap with the orthographic projections of the first color resist and the pixel defining layer on the substrate. The orthographic projections of the third color resists and the second color resist on the substrate at least partially overlap. The third, second, and first color resists, when projected onto each other, have different colors.

3. The display panel according to claim 2, wherein, The multiple light-emitting elements are arranged in an array; Multiple first color resists are arranged in an array; Each of the first color resists and the multiple light-emitting elements corresponds one-to-one; Each second color resist corresponds to a column of first color resists, and the orthographic projection of each second color resist on the substrate lies within the orthographic projection of a column of first color resists on the substrate; The second color resists of different colors are arranged alternately along the row direction of the array.

4. The display panel according to claim 2, wherein, The multiple light-emitting elements are arranged in an array; Multiple first color resists are arranged in an array; Each of the first color resists and the multiple light-emitting elements corresponds one-to-one; Multiple second-color resists are arranged in an array; Each second color resist corresponds to one first color resist, and the orthographic projection of each second color resist on the substrate lies within the orthographic projection of one first color resist on the substrate.

5. The display panel according to claim 3 or 4, wherein, Multiple third color filters are arranged in an array; Each of the third color resists corresponds to one of the first color resists, and the orthographic projection of each of the third color resists on the substrate lies within the orthographic projection of one of the first color resists on the substrate.

6. The display panel according to claim 5, wherein, The first color resist includes a red first color resist, a green first color resist, and a blue first color resist. In the array of the first color resists, the green first color resists and the blue first color resists are arranged alternately in odd-numbered columns, and the red first color resists and the green first color resists are arranged alternately in even-numbered columns; or, the red first color resists and the green first color resists are arranged alternately in odd-numbered columns, and the green first color resists and the blue first color resists are arranged alternately in even-numbered columns.

7. The display panel according to claim 6, wherein, The second color resist includes a red second color resist and a blue second color resist. The red second color resistor corresponds to the first color resistor in the odd-numbered column, and the blue second color resistor corresponds to the first color resistor in the even-numbered column; Alternatively, the red second color resistor corresponds to the first color resistor in the even-numbered column, and the blue second color resistor corresponds to the first color resistor in the odd-numbered column.

8. The display panel according to claim 6, wherein, The second color resistor includes a red second color resistor and a green second color resistor. The red second color resistor corresponds one-to-one with the green first color resistor, a portion of the green second color resistor corresponds one-to-one with the red first color resistor, and another portion of the green second color resistor corresponds one-to-one with the blue first color resistor.

9. The display panel according to claim 6, wherein, The second color resist includes a green second color resist and a blue second color resist. The blue second color resistor corresponds one-to-one with the green first color resistor, a portion of the green second color resistor corresponds one-to-one with the red first color resistor, and another portion of the green second color resistor corresponds one-to-one with the blue first color resistor.

10. The display panel according to any one of claims 7-9, wherein, The third color resistor includes a red third color resistor, a green third color resistor, and a blue third color resistor. The second color resistor includes a red second color resistor, a green second color resistor, and a blue second color resistor; The red third color resistor corresponds to the green second color resistor and the blue first color resistor, the green third color resistor corresponds to the blue second color resistor and the red first color resistor, and the blue third color resistor corresponds to the red second color resistor and the green first color resistor.

11. The display panel according to any one of claims 7-9, wherein, The second color resist has at least one second opening. The second opening corresponds one-to-one with the light-emitting element; The first opening corresponds one-to-one with the light-emitting element; The orthographic projection of the first opening on the substrate lies within the orthographic projection of the second opening on the substrate, and the opening area of ​​the first opening is smaller than the opening area of ​​the second opening.

12. The display panel according to claim 11, wherein, The first sublayer, the second sublayer, and the third sublayer are stacked sequentially in a direction away from the substrate; The third color resist has a third opening. The third opening corresponds one-to-one with the light-emitting element; The orthographic projections of the second opening and the third opening on the substrate at least partially overlap.

13. The display panel according to claim 12, wherein, It also includes a planarization layer located on the side of the color filter layer opposite to the substrate, the orthographic projection of the planarization layer on the substrate covering the color filter layer, and the surface of the side of the planarization layer opposite to the substrate being flush. The planarization layer has scattering particles added to the region of the pixel-defining layer that does not overlap with the orthographic projection of the second color resist on the substrate; and / or, the planarization layer has scattering particles added to the region of the pixel-defining layer that does not overlap with the orthographic projection of the third color resist on the substrate.

14. The display panel according to claim 2, wherein, The adjacent first color resistors are connected to each other; The adjacent second color resistors are connected to each other; The adjacent third color resistors are connected to each other.

15. A display device, wherein, Includes the display panel as described in any one of claims 1-14.

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