Display panel and electronic device

Abstract

This disclosure relates to a display panel and an electronic device. The display panel includes: an anode layer; a cathode layer; an encapsulation layer; an organic light-emitting layer, the organic light-emitting layer including a plurality of light-emitting blocks, at least one light-emitting block including a first light-emitting unit and a second light-emitting unit stacked and connected in series in the thickness direction of the display panel, the organic light-emitting layer being disposed between the anode layer and the cathode layer; and a color filter, the encapsulation layer being disposed between the cathode layer and the color filter, the color filter including a plurality of first color resists, the first color resists satisfying the following condition: wherein, there exists a first color resist with a first area between two adjacent first color resists, and the first area is not equal to the second area.

Description

Technical Field

[0001] This disclosure relates to the field of terminal technology, and more particularly to a display panel and an electronic device. Background Technology

[0002] Traditional solutions typically use polarizers to address the issue of external light backflow into the OLED. However, the placement of polarizers causes energy loss and increases device power consumption. Therefore, some related technologies use color filters instead of traditional polarizers, utilizing color filters to form a multi-color resist array to achieve color display in OLEDs.

[0003] However, OLEDs using color filters are prone to screen-off diffraction, which can produce glaring color diffraction stripes under indoor lighting or direct sunlight. Summary of the Invention

[0004] This disclosure provides a display panel and an electronic device to address the shortcomings of the related art.

[0005] According to a first aspect of the present disclosure, a display panel is provided, comprising:

[0006] Anode layer;

[0007] Cathode layer;

[0008] Encapsulation layer;

[0009] An organic light-emitting layer, the organic light-emitting layer comprising a plurality of light-emitting blocks, at least one light-emitting block comprising a first light-emitting unit and a second light-emitting unit stacked and connected in series in the thickness direction of the display panel, the organic light-emitting layer being disposed between the anode layer and the cathode layer;

[0010] A color filter, wherein the encapsulation layer is disposed between the cathode layer and the color filter, and the color filter includes a plurality of first color resists, wherein the first color resists satisfy the following condition:

[0011] Among them, there are two adjacent color resists with a first area and at least one first color resist with a second area between them, and the first area is not equal to the second area.

[0012] Optionally, multiple first-color color resists can be arranged in multiple rows and columns;

[0013] Wherein, at least one column of the first color resist satisfies the condition, and / or at least one row of the first color resist satisfies the condition.

[0014] Optionally, the centers of the first color resists in two adjacent rows can be set to be aligned or offset in the column direction.

[0015] Optionally, the centers of two adjacent rows of first color resists are staggered in the column direction, and the first color resists arranged in segments at a 45° angle to the column direction satisfy the aforementioned condition.

[0016] Optionally, multiple first color color resists are arranged in multiple rows and columns, with the first color color resists in the same row having equal areas and the first color color resists in the same column having equal areas.

[0017] The centers of the first color resists in two adjacent rows are staggered in the column direction, and the first color resists arranged in segments at a 45° angle to the column direction satisfy the aforementioned condition.

[0018] Optionally, the color filter further includes a plurality of second color resists, wherein the plurality of second color resists satisfy the following condition: there exists a gap of at least one second color resist with a fourth area between two adjacent second color resists having a third area, and the third area is not equal to the fourth area.

[0019] Optionally, the color filter further includes a plurality of third color resists, wherein the plurality of third color resists satisfy the following condition: there exists a fourth color resist with a sixth area between any two adjacent third color resists having a fifth area, and the fifth area is not equal to the sixth area.

[0020] Optionally, at least one other color resist may be spaced between two adjacent first color resists.

[0021] Optionally, the color filter includes multiple colors of color resist, and the color resist is set in a one-to-one correspondence with the light-emitting block;

[0022] The light-emitting block corresponding to at least one color resist includes a first light-emitting unit and a second light-emitting unit connected in series.

[0023] Optionally, there may be at least one light-emitting block with an eighth area between two adjacent light-emitting blocks of the seventh area.

[0024] Optionally, each of the first color resists corresponds to a single light-emitting block;

[0025] The light-emitting block with the seventh area is set to correspond with the color resist with the first area, and the light-emitting block with the eighth area is set to correspond with the light-emitting block with the second area.

[0026] The first area is greater than the second area and the seventh area is greater than the eighth area, or the first area is less than the second area and the seventh area is less than the eighth area.

[0027] Optionally, the light-emitting block further includes a charge-generating layer. In the thickness direction of the display panel, the charge-generating layer is disposed between the first light-emitting unit and the second light-emitting unit, and the charge-generating layer is connected in series with the first light-emitting unit and the second light-emitting unit. The first light-emitting unit is disposed between the anode layer and the charge-generating layer, and the second light-emitting unit is disposed between the cathode layer and the charge-generating layer.

[0028] Optionally, the first light-emitting unit includes a first hole transport layer, a first organic light-emitting semiconductor layer, and a first electron transport layer, wherein the first organic light-emitting semiconductor layer is disposed between the first hole transport layer and the first electron transport layer.

[0029] The second light-emitting unit includes a second hole transport layer, a second organic light-emitting semiconductor layer, and a second electron transport layer, wherein the second organic light-emitting semiconductor layer is disposed between the second hole transport layer and the second electron transport layer;

[0030] The charge generation layer is connected between the first electron transport layer and the second hole transport layer.

[0031] Optionally, the charge generation layer includes an N-type connection layer and a P-type connection layer connected to the N-type connection layer;

[0032] The N-type connection layer is connected to the first electron transport layer, and the P-type connection layer is connected to the second hole transport layer.

[0033] Optionally, the N-type interconnect layer includes an electron transport host material and a first guest dopant material, wherein the first guest dopant material includes lithium and / or ytterbium.

[0034] Optionally, the mass ratio of the first guest doped material is less than or equal to 5%.

[0035] Optionally, the P-type connecting layer includes a hole-injection type host material and a second guest doped material, wherein the second guest doped material is an organic small molecule material, and the mass ratio of the second guest doped material is greater than or equal to 5% and less than or equal to 10%.

[0036] Optionally, the diameter of the first area is greater than or equal to 1 μm and less than or equal to 8 μm, and the diameter of the second area is greater than or equal to 10 μm and less than or equal to 50 μm.

[0037] According to a second aspect of the present disclosure, an electronic device is provided, including a display panel as described in any of the above embodiments.

[0038] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0039] As can be seen from the above embodiments, this disclosure increases the spacing between two first color resists of the first area by setting at least one second-area first color resist between two first color resists of the first area, thereby reducing the diffraction stripes of the display panel in the off state; at the same time, the light-emitting block adopts a first light-emitting unit and a second light-emitting unit connected in series, which increases the luminous efficiency, can greatly reduce the power consumption of the display panel, which is conducive to reducing the battery capacity requirement, improving the overall thinness and lightness of the device, and enhancing the user experience.

[0040] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0041] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0042] Figure 1 This is a partial cross-sectional schematic diagram of a display panel according to an exemplary embodiment.

[0043] Figure 2 This is a schematic diagram of the color filter arrangement according to an exemplary embodiment.

[0044] Figure 3 This is a schematic diagram of another color filter arrangement according to an exemplary embodiment.

[0045] Figure 4 It is a diffraction simulation pattern in related technologies.

[0046] Figure 5 Based on Figure 2 The diffraction simulation pattern is obtained by considering the change in the area of ​​the color resist.

[0047] Figure 6 This is a schematic diagram illustrating the arrangement of red color resist in a color filter according to an exemplary embodiment.

[0048] Figure 7 This is a schematic diagram illustrating the arrangement of red color resist in another color filter according to an exemplary embodiment.

[0049] Figure 8 This is a schematic diagram illustrating the arrangement of red color resist in a color filter according to an exemplary embodiment.

[0050] Figure 9 This is a schematic diagram illustrating the arrangement of red color resist in another type of color filter according to an exemplary embodiment.

[0051] Figure 10This is a schematic diagram illustrating the arrangement of red color resist in another type of color filter according to an exemplary embodiment.

[0052] Figure 11 This is a schematic cross-sectional view of a light-emitting block according to an exemplary embodiment. Detailed Implementation

[0053] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0054] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The singular forms “a,” “the,” and “the” as used in this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0055] It should be understood that although the terms first, second, third, etc., may be used in this disclosure to describe various information, such information should not be limited to these terms. These terms are used only to distinguish information of the same type from one another. For example, without departing from the scope of this disclosure, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to determination."

[0056] Figure 1 This is a partial cross-sectional schematic diagram of a display panel according to an exemplary embodiment, such as... Figure 1 As shown, the display panel includes an anode layer 1, a cathode layer 2, an encapsulation layer 3, an organic light-emitting layer 4, and a color filter 5. The organic light-emitting layer 4 is disposed between the cathode layer 2 and the anode layer 1, and the encapsulation layer 3 is disposed between the cathode layer 2 and the color filter 5. It should be noted that, as needed, other layer structures can be designed between any two adjacent layers of the anode layer 1, cathode layer 2, encapsulation layer 3, organic light-emitting layer 4, and color filter 5, such as a touch layer or a planarization layer, or no other layer structure may be designed between any two layers; this disclosure does not impose any limitations in this regard. The encapsulation layer 3 is used to encapsulate the organic light-emitting layer 4, and can be encapsulated using glass or an organic thin film, depending on the specific design requirements.

[0057] The cathode layer 2 can be a monolithic structure, and it can be a double-layer structure, with one layer being ytterbium metal and the other being a magnesium-silver inorganic mixed layer. The magnesium:silver ratio in the magnesium-silver inorganic mixed layer can be 1:9, and the thickness of the magnesium-silver inorganic mixed layer can be in the range of 9nm-15nm, for example, 11mm, 12mm, 13.5mm, or 14mm. The anode layer 1 can include a first ITO layer, a silver metal layer, and a second ITO layer. The silver metal layer is disposed between the first and second ITO layers. The thickness of both the first and second ITO layers is in the range of 3nm-12nm, and their thicknesses can be equal or unequal. The thickness of the silver metal layer can be in the range of 80nm-120nm.

[0058] The color filter 5 includes multiple color resists of various colors. For example, the color filter 5 includes multiple first color resists, and these multiple first color resists satisfy the following conditions: there exists a first color resist with a first area between two adjacent first color resists with a first area, and the first area is not equal to the second area. For example, the first area can be larger than the second area, or the second area can be larger than the first area. By setting the second area to be larger than the first area or the first area to be larger than the second area, the light-emitting area can be increased compared to a scheme where all first color resists have a small area, thereby reducing the power consumption of the display panel. For example, the difference between the first area and the second area can be greater than 0 and less than or equal to 500um. Setting the area difference within this range is beneficial for controlling the mask accuracy of processing the color resist. Two adjacent first color resists with a first area can be arranged in segments in any direction of the display panel, and this disclosure does not impose any restrictions on this. For example, two adjacent color resistors of the first color area can be separated by one color resistor of the second color area, or two or more color resistors of the second color area can be separated by multiple (two or more) color resistors of the second color area. For example, in the same display panel, in a certain area there can be a first number of color resistors of the second color area between two adjacent color resistors of the first color area, and in another area there can be a second number of color resistors of the second color area between two adjacent color resistors of the first color area; the first number and the second number are not the same, for example, the first number is a positive integer greater than or equal to 1, and the second number is a positive integer greater than or equal to 2.

[0059] The color filter 5 can have any shape, such as a strip, a circle, or an ellipse. Other irregular shapes are also possible. When the color filter 5 has a circular shape, the difference between the diameter of the color filter representing the first area and the diameter of the color filter representing the second area can be greater than 0 and less than or equal to 50 μm. For example, the diameter of the first area is greater than or equal to 1 μm and less than or equal to 8 μm, and the diameter of the second area is greater than or equal to 10 μm and less than or equal to 50 μm. The refractive index of the color filter 5 is controlled within the range of 1.4-2.2, and the thickness of the color filter 5 is within the range of 1 μm-5 μm.

[0060] Regarding the aforementioned embodiment where there is a first color resist with a first area separated by at least one second color resist, it should be noted that this condition can be satisfied by all first color resists corresponding to all areas of the entire display panel to minimize diffraction, or it can be satisfied by first color resists corresponding to only a local area of ​​the display panel. The specific design can be customized as needed. Alternatively, all or some of the first color resists on the display panel can satisfy this condition, or all or some of the multiple color resists included in the color filter 5 can satisfy this condition.

[0061] The color filter 5 also includes multiple second-color and third-color color resists. The second-color color resists satisfy the following conditions: there exists a gap of at least one second-color color resist of a fourth area between two adjacent second-color color resists of a third area, and the third area is not equal to the fourth area; and / or, the third-color color resists satisfy the following conditions: there exists a gap of at least one third-color color resist of a sixth area between two adjacent third-color color resists of a fifth area, and the fifth area is not equal to the sixth area. This helps to increase the area of ​​the region satisfying the above conditions, thereby increasing the area of ​​the region that can reduce diffraction fringes. Moreover, each color resist satisfies its corresponding condition, which can improve the uniformity of diffraction fringe reduction and help avoid the situation where diffraction fringes in local areas are particularly glaring. For example, there may be a gap of one second-color color resist of a fourth area between two adjacent second-color color resists of a third area, or there may be a gap of multiple (two or more) second-color color resists of a fourth area between two adjacent second-color color resists of a third area. For example, in the same display panel, there may be a third number of second color resists of a fourth area between two adjacent second color resists of a third area in a certain area, and there may be a fourth number of second color resists of a fourth area between two adjacent second color resists of a third area in another area; the third number and the fourth number are not the same, for example, the third number is a positive integer greater than or equal to 1, and the fourth number is a positive integer greater than or equal to 2.

[0062] For example, two adjacent color resistors of the fifth area can be separated by a third color resistor of the sixth area, or two or more third color resistors of the sixth area can be separated by multiple (two or more) third color resistors of the sixth area. For example, in the same display panel, in a certain area there can be a fifth number of third color resistors of the sixth area between two adjacent third color resistors of the fifth area, and in another area there can be a sixth number of third color resistors of the sixth area between two adjacent third color resistors of the fifth area; the fifth number and the sixth number are not the same, for example, the fifth number is a positive integer greater than or equal to 1, and the sixth number is a positive integer greater than or equal to 2.

[0063] by Figure 2 As shown in the example, Figure 2 The image exemplarily illustrates one arrangement of color resists in a color filter 5, wherein a schematic first color resist 51 with a centrally filled diagonal stripe, a schematic second color resist 52 with a centrally blank circle, and a schematic third color resist 53 with a centrally filled horizontal stripe. In this color filter 5, each pair of adjacent first color resists with a first area is spaced apart by a first color resist of a second area. Figure 3 As shown, a first color filter 51 with diagonal stripes filling the center represents a first color filter 51, a second color filter 52 with a blank circle in the center represents a second color filter 52, and a third color filter 53 with horizontal stripes filling the center represents a third color filter 53. In this color filter 5, adjacent first color filters of a first area are spaced apart by a first color filter of a second area; adjacent second color filters of a third area are spaced apart by a second color filter of a fourth area; and adjacent third color filters of a fifth area are spaced apart by a third color filter of a sixth area. Any two of the differences between the first and second areas, the third and fourth areas, and the fifth and sixth areas can be equal or unequal.

[0064] With the first color resist being blue (B), the second color resist being red (R), and the third color resist being green (G), the color resist arrangement of color filter 5 can be obtained. Figure 2 and Figure 3The description only exemplifies one arrangement of color resists in the color filter 5. The color filter 5 can, of course, employ other color resist arrangements, such as the standard RGB arrangement, RGBW arrangement, PenTile arrangement, Delta arrangement, Pearl arrangement, and diamond arrangement. The description uses the example of a first color resist satisfying the corresponding condition, a second color resist satisfying the corresponding condition, and a third color resist satisfying the corresponding condition. In other embodiments, one or two of the first, second, and third color resists in the color filter 5 may all or partially satisfy the corresponding condition.

[0065] In this embodiment, at least two of the first, third, and fifth areas are the same, and at least two of the second, fourth, and sixth areas are the same. This reduces the design cost of the mask used to process the color filter, thus improving yield. Alternatively, at least two of the first, third, and fifth areas are the same, while the second, fourth, and sixth areas are all different; or the first, third, and fifth areas are all different, while at least two of the second, fourth, and sixth areas are the same; or the first, third, and fifth areas are all different, and the second, fourth, and sixth areas are all different. The specific design can be customized as needed, and this disclosure does not impose any limitations on this.

[0066] Based on the same color resist arrangement, when the first color resist is blue, and the areas of the blue resist are all equal, we can obtain... Figure 4 The diffraction simulation results shown are obtained when multiple blue color filters meet the aforementioned conditions. Figure 5 The diffraction simulation results shown are compared with those of the above. Figure 5 and Figure 4 It is evident that the technical solution disclosed herein can reduce diffraction.

[0067] exist Figure 2In the illustrated embodiment, the example given is a first color resist of a single second area spaced between two first color resists of a first area. In other embodiments, this condition can also be that there are multiple first color resists spaced between two first color resists, each of which has a first area. The areas of these multiple first color resists are not equal, and at least one of the first color resists has an area that is a second area. The unequal areas of the multiple color resists can include the areas of each of the multiple first color resists being unequal, or the area of ​​at least one of the multiple first color resists being different from the areas of the other first color resists. This disclosure does not impose any limitations on this. The areas of the multiple first color resists can also be equal, for example, the areas of all the multiple first color resists are equal to the second area, which can reduce the difficulty in the display panel manufacturing process and help improve the yield.

[0068] In the above embodiments, the plurality of first color color resists of the color filter 5 can be arranged in multiple rows and columns, and at least one row of the multiple rows and columns of first color color resists satisfies the aforementioned conditions. For example... Figure 6 As shown, the plurality of first color color resists are arranged in multiple rows and columns, wherein the first color color resists in each row satisfy the aforementioned conditions. For example, when the first color color resist is a blue color resist B, the plurality of blue color resists B are arranged in multiple rows and columns, and at least one row of the blue color resists in these multiple rows and columns satisfies the aforementioned conditions. Of course, in other embodiments, it is also possible that one or more rows of the first color color resists in these multiple rows satisfy the aforementioned conditions.

[0069] In other embodiments, at least one column of the multi-row, multi-column first color resist satisfies the aforementioned condition. For example, such as Figure 7 As shown, taking blue color resist B as the first color resist as an example, multiple blue color resists B are arranged in multiple rows and columns, and each column of blue color resist B satisfies the aforementioned conditions. Of course, in other implementations, one or more columns of the first color resists may satisfy the aforementioned conditions.

[0070] In some other embodiments, in the same color filter 5, at least one column and at least one row of the first color resist in multiple rows and columns satisfies the condition, still using... Figure 7 As shown, the row-distributed and column-distributed first-color resists respectively satisfy the aforementioned conditions. Taking the first-color resist as blue resist B as an example, this blue resist is distributed in multiple rows and columns, and the row-distributed and column-distributed blue resists respectively satisfy the aforementioned conditions.

[0071] by Figure 6 and Figure 7 For example, the centers of the first color resists in two adjacent rows can be set correspondingly in the column direction. In other embodiments, such as... Figure 8As shown, the centers of the first color resists in two adjacent rows can be staggered in the column direction, which helps to improve the display uniformity of the display panel. In the scheme where the centers of the first color resists in two adjacent rows can be staggered in the column direction, it is also possible that at least one row of the first color resists satisfies the aforementioned conditions, or at least one column of the first color resists satisfies the aforementioned conditions, or at least one row of the first color resists and at least one column of the first color resists each satisfy the aforementioned conditions. This disclosure does not impose any limitations on this.

[0072] like Figure 9 As shown, the centers of the first color resists in two adjacent rows are staggered in the column direction, and the centers of any three adjacent first color resists form an isosceles triangle. This staggered arrangement of the centers of the first color resists in two adjacent rows in the column direction helps improve the display uniformity of the display panel. In some embodiments, the isosceles triangle can be an isosceles right triangle. When the centers of the first color resists in two adjacent rows are staggered in the column direction, in some embodiments, the first color resists can be arranged in segments at a 45° angle to the column direction. Furthermore, at least one segment of the first color resist arranged in a 45° angle to the column direction satisfies the aforementioned condition, thereby uniformly reducing diffraction in the target area.

[0073] In the same color filter, at least one row of first color resists may satisfy the aforementioned conditions, and at least one segment of first color resists may satisfy the aforementioned conditions, arranged in a direction at a 45° angle to the column direction; or at least one column of first color resists may satisfy the aforementioned conditions, arranged in a direction at a 45° angle to the column direction; or at least one row of first color resists may satisfy the aforementioned conditions, and at least one segment of first color resists may satisfy the aforementioned conditions, with at least one column of first color resists satisfying the aforementioned conditions. The specific design can be customized as needed. In some other embodiments, such as... Figure 10 As shown, multiple first-color color resists are arranged in multiple rows and columns, with the first-color color resists in the same row having equal areas, and the first-color color resists in the same column having equal areas. The centers of the first-color color resists in adjacent rows are staggered in the column direction. The first-color color resists arranged in segments at a 45° angle to the column direction satisfy the aforementioned conditions, such as... Figure 10 The segmented first color resist shown in the dashed box satisfies the aforementioned conditions. Based on this, the opening areas of the same row and column of the mask used to process the first color resist can be equal, which helps improve the mask yield and thus the display panel yield.

[0074] exist Figures 6-10 The examples illustrate a specific arrangement of the first color color resists, using blue color resist as an example. However, in actual color filter 5, at least one other color resist can be placed between two adjacent first color color resists. Figure 2 As shown, a red color resist is placed between two adjacent blue color resists. Both of the above situations can exist in the same color filter 5, or only one of them can exist, depending on the design requirements. The implementation of the second and third color resists can refer to the implementation of the first color resist in any of the foregoing embodiments, and this disclosure does not impose any limitations on them.

[0075] The above description uses blue color resist as an example to illustrate its arrangement. In other embodiments, the color filter 5 may also satisfy the condition that there is at least one red color resist of a second area between two adjacent red color resists of a first area. Furthermore, the red color resists can be arranged in multiple rows and columns. This could be in the row direction where there is at least one red color resist of a second area between two adjacent red color resists of a first area, or in the column direction where there is at least one red color resist of a second area between two adjacent red color resists of a first area, or in the diagonal direction where there is at least one red color resist of a second area between two adjacent red color resists of a first area. The centers of adjacent rows of red color resists are staggered in the column direction, and in the red color resists arranged in segments at a 45° angle to the column, there is at least one red color resist of a second area between two adjacent red color resists of a first area. Other color color resists in the color filter 5 can also be implemented with reference to the above embodiments. For example, the green color resist can also be implemented with reference to the above blue or red color resists, which will not be elaborated further here.

[0076] In the above embodiments, the organic light-emitting layer 4 includes a plurality of light-emitting blocks 41. Adjacent light-emitting blocks 41 can be insulated from each other by an insulating material, such as a pixel defining layer that defines pixel openings. Subsequently, light-emitting blocks 41 are formed within these pixel openings using a vacuum thermal evaporation method. These plurality of light-emitting blocks 41 correspond one-to-one with all the color resists included in the color filter 5. Each first color resist corresponds to a single light-emitting block 41. In some embodiments, the areas of the plurality of light-emitting blocks 41 corresponding to the first color resist can be equal, thereby simplifying the process. In other embodiments, to further reduce diffraction fringes on the display panel in the off-screen state, there is a space between two light-emitting blocks 41 with an area of ​​seven, with at least one light-emitting block 41 of an eighth area between them, breaking the original periodic spacing between the light-emitting blocks 41 and reducing diffraction fringes. Furthermore, to minimize or even eliminate changes in screen brightness and viewing angle distortion, the seventh-area light-emitting block 41 corresponds to the first-color resist of the first area, and the eighth-area light-emitting block corresponds to the second-color resist of the second area. When the first area is larger than the second area, the seventh area is larger than the eighth area; conversely, when the first area is smaller than the second area, the seventh area is also smaller than the eighth area. This ensures that the area variation trend of the light-emitting blocks is as consistent as possible with the area variation trend of the first-color resist, thus maintaining the screen brightness and viewing angle distortion in existing related technologies and reducing design costs. The area variation of the light-emitting block 41 corresponding to the second-color resist can be referenced to that of the light-emitting block 41 corresponding to the first-color resist; further details are omitted here.

[0077] In some embodiments, to further reduce the power consumption of the display panel by combining a polarizer-free setup, an ultra-low power display panel is achieved. For example... Figure 11 As shown, each light-emitting block 41 includes a first light-emitting unit 411 and a second light-emitting unit 412. The first light-emitting unit 411 and the second light-emitting unit 412 are stacked in the thickness direction of the display panel, and the first light-emitting unit 411 and the second light-emitting unit 412 are connected in series. This can improve the luminous efficiency of the light-emitting block 41. Under the condition of equal current density, compared with a single light-emitting unit in related technologies, the higher luminous efficiency can achieve a lower driving current, reduce the current requirement, greatly reduce the power consumption of the display panel, which is conducive to reducing battery capacity requirements, improving the thinness of the whole device, and enhancing the user experience.

[0078] For example, in some embodiments, a single light-emitting block 41 may include a first light-emitting unit 411 and a second light-emitting unit 412 connected in series, or multiple light-emitting blocks 41 may include a first light-emitting unit 411 and a second light-emitting unit 412 connected in series. In other embodiments, when the color filter 5 includes multiple colors of color resists, and the color resists are configured in a one-to-one correspondence with the light-emitting blocks 41, the light-emitting block corresponding to at least one color color resist includes a first light-emitting unit 411 and a second light-emitting unit 412 connected in series. For example, the light-emitting block corresponding to the blue color resist in the color filter 5 may include a first light-emitting unit 411 and a second light-emitting unit 412 connected in series, or the light-emitting block corresponding to the red color resist may include a first light-emitting unit 411 and a second light-emitting unit 412 connected in series, or the light-emitting block corresponding to the green color resist may include a first light-emitting unit 411 and a second light-emitting unit 412 connected in series. Of course, in other embodiments, the light-emitting blocks corresponding to multiple colors of color resists may also include a first light-emitting unit 411 and a second light-emitting unit 412 connected in series, which will not be elaborated here.

[0079] Furthermore, each light-emitting block 41 also includes a charge-generating layer 413. In the thickness direction of the display panel, the charge-generating layer 413 is disposed between the first light-emitting unit 411 and the second light-emitting unit 412, and the charge-generating layer 413 is connected in series with the first light-emitting unit 411 and the second light-emitting unit 412. The first light-emitting unit 411 is disposed between the anode layer 1 and the charge-generating layer 413, and the second light-emitting unit 412 is disposed between the cathode layer 2 and the charge-generating layer 413. For example, the first light-emitting unit 411 further includes a first hole transport layer 4111, a first organic light-emitting semiconductor layer 4112, and a first electron transport layer 4113, with the first organic light-emitting semiconductor layer 4112 disposed between the first hole transport layer 4111 and the first electron transport layer 4113. Similarly, the second light-emitting unit 412 includes a second hole transport layer 4121, a second organic light-emitting semiconductor layer 4122, and a second electron transport layer 4123. The second organic light-emitting semiconductor layer 4122 is disposed between the second hole transport layer 4121 and the second electron transport layer 4123. The charge generation layer 413 is disposed between the first electron transport layer 4113 and the second hole transport layer 4121, thereby realizing charge conduction.

[0080] In this design, the first organic light-emitting semiconductor layer 4112 is a host-guest doped material. The doped guest material can be a fluorescent material or a phosphorescent material, and the doping mass ratio of the guest material is 2%-10%, such as 3%, 6%, 7%, or 9%. Taking a color filter 5 including blue, red, and green color filters as an example, the thickness of the first organic light-emitting semiconductor layer 4112 corresponding to the blue color filter block 41 is in the range of 18nm-22nm; the thickness of the first organic light-emitting semiconductor layer 4112 corresponding to the green color filter block 41 is in the range of 28nm-32nm; and the thickness of the first organic light-emitting semiconductor layer 4112 corresponding to the red color filter block 41 is in the range of 38nm-42nm. The second organic light-emitting semiconductor layer 4122 is a host-guest doped material. The doped guest material can be a fluorescent material or a phosphorescent material, and the doping mass ratio of the guest material is 2%-10%, such as 3%, 6%, 7%, or 9%. Taking the color filter 5, which includes a blue color filter, a red color filter, and a green color filter, as an example, the thickness of the second organic light-emitting semiconductor layer 4122 of the light-emitting block 41 corresponding to the blue color filter is in the range of 18nm-22nm; the thickness of the second organic light-emitting semiconductor layer 4122 of the light-emitting block 41 corresponding to the green color filter is in the range of 28nm-32nm; and the thickness of the second organic light-emitting semiconductor layer 4122 of the light-emitting block 41 corresponding to the red color filter is in the range of 38nm-42nm.

[0081] The first hole transport layer 4111 can be as follows: Figure 11 The diagram shows a two-layer structure, where the first hole transport layer 4111 of the two layers is made of different materials, or the first hole transport layer 4111 can be a single-layer structure using a single material. The thickness of the first hole transport layer 4111 can be greater than or equal to 18 nm and less than or equal to 27 nm, for example, the thickness of the first hole transport layer 4111 can be 19 nm, 20.5 nm, 21 nm, 22 nm, or 23 nm. Similarly, the second hole transport layer 4121 can be as follows... Figure 11The diagram shows a double-layer structure, where the materials of the second hole transport layer 4121 in the double layers are different, or the second hole transport layer 4121 can be a single-layer structure using a single material. Taking a color filter including blue, red, and green color filters as an example, the thickness of the second hole transport layer 4121 of the light-emitting block 41 corresponding to the blue color filter is in the range of 40nm-50nm, including 43nm, 44nm, 48nm, and 49nm; the thickness of the second hole transport layer 4121 of the light-emitting block 41 corresponding to the green color filter is in the range of 55nm-65nm, including 58nm, 59nm, 63nm, and 64nm; and the thickness of the second hole transport layer 4121 of the light-emitting block 41 corresponding to the red color filter is in the range of 95nm-105nm, including 98nm, 99nm, 103nm, and 104nm.

[0082] The first electron transport layer 4113 is a doped material consisting of both host and guest materials, both of which are small organic molecules. One of these materials is Liq, with a Liq content ranging from 20% to 40%, such as 38%, 35%, 30%, 25%, and 20%. The thickness of the first electron transport layer 4113 is in the range of 20 nm to 40 nm, such as 25 nm, 27 nm, 33 nm, 36 nm, and 38 nm. The second electron transport layer 4123 is also a doped material consisting of both host and guest materials, both of which are small organic molecules. One of these materials is Liq, with a Liq content ranging from 20% to 40%, such as 38%, 35%, 30%, 25%, and 20%. The thickness of the second electron transport layer 4123 is in the range of 20 nm to 40 nm, such as 25 nm, 27 nm, 33 nm, 36 nm, and 38 nm.

[0083] In some embodiments, the charge-generating layer 413 includes an N-type connection layer 4131 and a P-type connection layer 4132 connected to the N-type connection layer 4131. The N-type connection layer 4131 is connected to a first electron transport layer 4113, and the P-type connection layer 4132 is connected to a second hole transport layer 4121. The N-type connection layer 4131 includes an electron transport host material and a first guest dopant material, wherein the first guest dopant material includes lithium and / or ytterbium. The mass ratio of the first guest dopant material is less than or equal to 5%, for example, the mass ratio of the first guest dopant material can be 1%, 2%, 3%, 4%, or 5%. The thickness of the N-type connection layer 4131 can be greater than or equal to 10 nm and less than or equal to 15 nm, for example, the thickness of the N-type connection layer 4131 can be 11 nm, 12 nm, 13 nm, or 14 nm. The P-type interconnect layer 4132 includes a hole-injection host material and a second guest doped material. The second guest doped material is an organic small molecule material, and the mass ratio of the second guest doped material is greater than or equal to 5% and less than or equal to 10%. For example, the mass ratio of the second guest doped material can be 6%, 7%, 8%, 9% or 10%. The thickness of the P-type interconnect layer 4132 can be 7nm, 8nm, 9nm or 10nm.

[0084] In the above embodiments, it is still based on Figure 11 As shown, the first light-emitting unit 411 further includes a first hole injection layer 4114 and a first hole blocking layer 4115. The first hole injection layer 4114 is located between the anode layer 1 and the first hole transport layer 4111, and the first hole blocking layer 4115 is located between the first organic light-emitting semiconductor layer 4112 and the first electron transport layer 4113. The first hole injection layer 4114 is a host-guest doped material, with a guest doping concentration mass ratio of 0.5%-5.0%, such as 1%, 2%, 3%, or 4%. The thickness of the first hole injection layer 4114 is in the range of 5nm-20nm, such as 8nm, 10nm, 13nm, 16nm, 17nm, or 19nm. The thickness of the first hole blocking layer 4115 is less than or equal to 5nm, such as 2nm, 3nm, or 4nm. The second light-emitting unit 412 also includes a second hole blocking layer 4124, the thickness of which is less than or equal to 5nm, such as 2nm, 3nm or 4nm.

[0085] Based on the technical solution of this disclosure, an electronic device is also provided, which includes the display panel described in any of the foregoing embodiments. The display panel can be a flat screen or a curved screen, and this disclosure does not limit this. At least a portion of the display area of ​​the display panel satisfies the following condition:

[0086] The first color resists satisfy the following conditions: two first color resists, each with a first area, are separated by a first color resist with a second area; the second color resists satisfy the following conditions: two second color resists, each with a third area, are separated by a second color resist with a fourth area, where the third area is not equal to the fourth area; the third color resists satisfy the following conditions: two third color resists, each with a fifth area, are separated by a third color resist with a sixth area, where the fifth area is not equal to the sixth area. This allows at least a portion of the region to serve as a diffraction fringe reduction region, achieving localized diffraction reduction adjustment and reducing design costs caused by changes in resist area.

[0087] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0088] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A display panel, characterized in that, include: Anode layer; Cathode layer; Encapsulation layer; An organic light-emitting layer, the organic light-emitting layer comprising a plurality of light-emitting blocks, at least one light-emitting block comprising a first light-emitting unit and a second light-emitting unit stacked and connected in series in the thickness direction of the display panel, the organic light-emitting layer being disposed between the anode layer and the cathode layer; A color filter, wherein the encapsulation layer is disposed between the cathode layer and the color filter, and the color filter includes a plurality of first color resists, wherein the first color resists satisfy the following condition: Among them, there are two adjacent color resists with a first area and at least one first color resist with a second area between them, and the first area is not equal to the second area.

2. The display panel according to claim 1, characterized in that, Multiple primary color resists are arranged in multiple rows and columns; Wherein, at least one column of the first color resist satisfies the condition, and / or at least one row of the first color resist satisfies the condition.

3. The display panel according to claim 2, characterized in that, The centers of the first color resists in two adjacent rows are set either correspondingly or offset upwards in the column direction.

4. The display panel according to claim 3, characterized in that, The centers of the first color resists in two adjacent rows are staggered in the column direction, and the first color resists arranged in segments at a 45° angle to the column direction satisfy the aforementioned condition.

5. The display panel according to claim 1, characterized in that, Multiple first-color color resists are arranged in multiple rows and columns. The first-color color resists in the same row have equal areas, and the first-color color resists in the same column have equal areas. The centers of the first color resists in two adjacent rows are staggered in the column direction, and the first color resists arranged in segments at a 45° angle to the column direction satisfy the aforementioned condition.

6. The display panel according to claim 1, characterized in that, The color filter also includes a plurality of second color resists, wherein the plurality of second color resists satisfy the following condition: there exists a second color resist with a third area between two adjacent second color resists, and the third area is not equal to the fourth area.

7. The display panel according to claim 1, characterized in that, The color filter also includes a plurality of third color resists, wherein the plurality of third color resists satisfy the following condition: there exists a fourth color resist with a sixth area between any two adjacent third color resists having a fifth area, and the fifth area is not equal to the sixth area.

8. The display panel according to claim 6 or 7, characterized in that, There is at least one other color resist between two adjacent first color resists.

9. The display panel according to claim 1, characterized in that, The color filter includes color resists of various colors, and the color resists are set in a one-to-one correspondence with the light-emitting blocks; The light-emitting block corresponding to at least one color resist includes a first light-emitting unit and a second light-emitting unit connected in series.

10. The display panel according to claim 1, characterized in that, There exists a space between two adjacent light-emitting blocks with an area of ​​seven, and at least one light-emitting block with an area of ​​eight.

11. The display panel according to claim 10, characterized in that, Each of the first color resists corresponds to a single light-emitting block; The light-emitting block with the seventh area is set to correspond with the color resist with the first area, and the light-emitting block with the eighth area is set to correspond with the light-emitting block with the second area. The first area is greater than the second area and the seventh area is greater than the eighth area, or the first area is less than the second area and the seventh area is less than the eighth area.

12. The display panel according to claim 1, characterized in that, The light-emitting block further includes a charge-generating layer. In the thickness direction of the display panel, the charge-generating layer is disposed between the first light-emitting unit and the second light-emitting unit, and the charge-generating layer is connected in series with the first light-emitting unit and the second light-emitting unit. The first light-emitting unit is disposed between the anode layer and the charge-generating layer, and the second light-emitting unit is disposed between the cathode layer and the charge-generating layer.

13. The display panel according to claim 12, characterized in that, The first light-emitting unit includes a first hole transport layer, a first organic light-emitting semiconductor layer, and a first electron transport layer, wherein the first organic light-emitting semiconductor layer is disposed between the first hole transport layer and the first electron transport layer; The second light-emitting unit includes a second hole transport layer, a second organic light-emitting semiconductor layer, and a second electron transport layer, wherein the second organic light-emitting semiconductor layer is disposed between the second hole transport layer and the second electron transport layer; The charge generation layer is connected between the first electron transport layer and the second hole transport layer.

14. The display panel according to claim 13, characterized in that, The charge generation layer includes an N-type connection layer and a P-type connection layer connected to the N-type connection layer; The N-type connection layer is connected to the first electron transport layer, and the P-type connection layer is connected to the second hole transport layer.

15. The display panel according to claim 14, characterized in that, The N-type interconnect layer includes an electron transport host material and a first guest doped material, wherein the first guest doped material includes lithium and / or ytterbium.

16. The display panel according to claim 15, characterized in that, The mass ratio of the first guest doped material is less than or equal to 5%.

17. The display panel according to claim 16, characterized in that, The P-type connecting layer includes a hole-injection type host material and a second guest doped material. The second guest doped material is an organic small molecule material, and the mass ratio of the second guest doped material is greater than or equal to 5% and less than or equal to 10%.

18. The display panel according to claim 1, characterized in that, The diameter of the first area is greater than or equal to 1 μm and less than or equal to 8 μm, and the diameter of the second area is greater than or equal to 10 μm and less than or equal to 50 μm.

19. An electronic device, characterized in that, Includes the display panel as described in any one of claims 1-18.

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