Display panel and display device

Abstract

The display panel and the display device are disclosed. The display panel of one embodiment comprises a first display area and a second display area, the first display area being an under-screen camera area, and the light extraction efficiency of pixels in the first display area being greater than that of pixels in the second display area. Embodiments of the present disclosure can improve the brightness consistency of the first display area and the second display area without increasing the current density of the first display area by different structural settings of the first display area implemented as an under-screen camera area and the additionally arranged second display area, thereby prolonging the light-emitting life of the first display area.

Description

Technical Field

[0001] This disclosure relates to the field of display technology, and in particular to a display panel and display device. Background Technology

[0002] Under-display camera technology hides the front-facing camera beneath the full-screen display. The area where the camera is located can both take photos and display images, and is usually called the under-display camera area (FDC area). Currently, under-display camera areas suffer from a short lifespan. Summary of the Invention

[0003] To address at least one of the aforementioned problems, a first aspect of this disclosure provides a display panel, comprising: a first display area and a second display area, wherein the first display area is an under-display camera area.

[0004] The light-emitting efficiency of the pixels in the first display area is greater than that of the pixels in the second display area.

[0005] Optionally, the display panel may also include:

[0006] Substrate;

[0007] A pixel defining layer is disposed on a substrate and includes multiple pixel openings;

[0008] A black matrix layer is disposed in the second display area on the side of the pixel delimiting layer away from the substrate. The black matrix layer includes a plurality of first openings corresponding to the pixel openings of the second display area.

[0009] A first light extraction layer, disposed in a first display area, includes: second openings corresponding one-to-one with pixel openings, wherein the surface of the second opening closer to the substrate is smaller than the surface farther from the substrate; and

[0010] The color filter layer includes a first color filter sub-section covering the second opening and a second color filter sub-section covering the first opening, wherein the refractive index of the color filter layer is greater than the refractive index of the first light extraction layer.

[0011] Optionally, the cross-section of the first light extraction layer perpendicular to the substrate is trapezoidal, and the slope angle of the trapezoid is greater than or equal to 45° and less than or equal to 85°; and

[0012] The refractive index of the first light extraction layer is greater than or equal to 1.45 and less than or equal to 1.5, and the refractive index of the color filter layer is greater than or equal to 1.6 and less than or equal to 1.75.

[0013] Optionally, the first display area includes a pixel opening defined by the pixel defining layer and a light-transmitting area between the pixel openings;

[0014] The second opening's orthogonal projection onto the substrate covers the pixel opening's orthogonal projection onto the substrate; and

[0015] The distance from the edge of the second opening in the orthographic projection of the substrate to the edge of the corresponding pixel opening in the orthographic projection of the substrate is greater than or equal to 0 μm and less than or equal to 1 μm.

[0016] Optionally, the display panel further includes: an anode layer disposed on the side of the pixel defining layer near the substrate, the anode layer including a plurality of first anodes disposed in the first display area.

[0017] The first color filter sub-section includes a first region covering the surface of the first light extraction layer away from the substrate, wherein the orthographic projection of the first region onto the substrate falls within the orthographic projection range of the first anode onto the substrate.

[0018] The width of the overlap between the first region and the pixel boundary layer is greater than or equal to 2μm and less than or equal to 5μm.

[0019] The width of the overlapping portion of the orthographic projection of the color filter portion adjacent to the first region and having a different color from it on the substrate and the first anode is greater than or equal to 1 μm and less than or equal to 3 μm.

[0020] Optionally, the display panel may also include:

[0021] Substrate;

[0022] A pixel defining layer is disposed on a substrate and includes multiple pixel openings;

[0023] A black matrix layer is disposed in the second display area on the side of the pixel delimiting layer away from the substrate. The black matrix layer includes a plurality of first openings corresponding to the pixel openings of the second display area.

[0024] The color filter layer includes a first color filter sub-section disposed in a first display area and a second color filter sub-section disposed in a first opening. The first color filter sub-section includes a plurality of protrusion structures corresponding one-to-one with the pixel openings; and

[0025] The second light extraction layer is disposed on the surface of the color filter layer away from the substrate.

[0026] The refractive index of the color filter layer is greater than that of the second light extraction layer.

[0027] Optionally, the thickness of the protrusion structure is greater than or equal to 3 μm and less than or equal to 4 μm, and / or

[0028] The protrusion structure has a trapezoidal cross-section perpendicular to the substrate, with a slope angle of ≥65° and ≤85°, and the refractive index of the color filter layer is ≥1.6 and ≤1.75.

[0029] Optionally, the first display area includes a pixel aperture defined by a pixel defining layer and a light-transmitting area between the pixel apertures.

[0030] The first color filter sub-section includes: a first color filter portion for a first color, a second color filter portion for a second color, and a third color filter portion for a third color.

[0031] The first color filter sub-section also includes: a connecting structure covering the light-transmitting area, wherein the connecting structure is combined with the color filter portion of the same color in the adjacent raised structure to form a whole.

[0032] The orthographic projection edge of the protrusion structure not combined with the connecting structure falls within the orthographic projection of the pixel defining layer on the substrate, and the distance from the edge to the corresponding pixel opening at the orthographic projection edge of the substrate is greater than or equal to 0 μm and less than or equal to 1 μm.

[0033] Optionally, the thickness of the connecting structure is greater than or equal to 1 μm and less than or equal to 1.5 μm.

[0034] Optionally, the display panel further includes: an anode layer disposed on the side of the pixel defining layer near the substrate, the anode layer including a plurality of first anodes disposed in the first display area, and the protrusion structure including first protrusion structures not coupled to the connection structure.

[0035] The orthographic projection of the first protrusion structure onto the substrate falls within the orthographic projection range of the first anode onto the substrate.

[0036] The width of the overlap between the first protrusion structure and the pixel boundary layer is greater than or equal to 2μm and less than or equal to 5μm.

[0037] The width of the overlapping portion of the orthographic projection of the color filter portion adjacent to and different in color from the first protrusion structure on the substrate and the first anode is greater than or equal to 1 μm and less than or equal to 3 μm.

[0038] Optionally, the display panel may also include:

[0039] Substrate;

[0040] A pixel defining layer is disposed on a substrate and includes multiple pixel openings;

[0041] A black matrix layer is disposed in the second display area on the side of the pixel delimiting layer away from the substrate. The black matrix layer includes a plurality of first openings corresponding to the pixel openings of the second display area.

[0042] A third light extraction layer, disposed in the first display area and including raised structures corresponding one-to-one with the pixel openings; and

[0043] The color filter layer includes a first color filter sub-section disposed in a first display area and a second color filter sub-section disposed in a first opening. The first color filter sub-section, the first color filter portion, and the second color filter portion are disposed in a one-to-one correspondence with the pixel openings and cover the raised structures in a one-to-one correspondence.

[0044] The refractive index of the color filter layer is less than that of the third light extraction layer.

[0045] Optionally, the thickness of the protrusion structure is greater than or equal to 1 μm and less than or equal to 2 μm, and / or

[0046] The protrusion structure has a trapezoidal cross-section perpendicular to the substrate, with a slope angle greater than or equal to 65° and less than or equal to 85°.

[0047] The refractive index of the third light extraction layer is greater than or equal to 1.65 and less than or equal to 1.8, and the refractive index of the color filter layer is greater than or equal to 1.45 and less than or equal to 1.55.

[0048] Optionally, the first display area includes a pixel aperture defined by a pixel defining layer and a light-transmitting area between the pixel apertures.

[0049] The first color filter sub-section also includes: a connecting structure covering the light-transmitting area, the connecting structure being integrated with adjacent color filter sections of the same color to form a whole.

[0050] The orthographic projection edge of the color filter portion not connected to the connection structure falls within the orthographic projection of the pixel defining layer on the substrate, and the distance from this edge to the orthographic projection edge of the corresponding pixel opening on the substrate is greater than or equal to 0 μm and less than or equal to 1 μm.

[0051] Optionally, the display panel further includes: an anode layer disposed on the side of the pixel defining layer near the substrate, the anode layer including a plurality of first anodes disposed in the first display area.

[0052] The first display area includes pixel openings defined by a pixel defining layer and a light-transmitting area between the pixel openings.

[0053] The first color filter sub-section includes a first color filter portion of a first color, a second color filter portion of a second color, and a third color filter portion of a third color. The gaps or overlapping portions between adjacent color filter portions fall within the orthogonal projection of the first anode onto the orthogonal projection of the substrate.

[0054] Optionally, in the first display area, the spacing between adjacent color filter portions is greater than or equal to -3 μm and less than or equal to 1 μm.

[0055] Optionally, the first display area includes a pixel aperture defined by a pixel defining layer and a light-transmitting area between the pixel apertures.

[0056] The first color filter sub-section further includes: multiple color filter zones covering the light-transmitting area, the multiple color filter zones including a first color filter zone of a first color, a second color filter zone of a second color, and a third color filter zone of a third color, wherein,

[0057] Each color filter section covers multiple light-transmitting areas.

[0058] Adjacent color filter zones have different colors, and each color filter zone has approximately the same projected area on the substrate.

[0059] Optionally, at least one boundary of the orthographic projection boundary of each color filter partition on the substrate is wavy, and / or

[0060] In the first display area, the total area of ​​the orthographic projection of each color filter partition on the substrate is approximately the same, and / or

[0061] The spacing between adjacent color filter zones is greater than or equal to 0 μm and less than or equal to 3 μm.

[0062] A second aspect of this disclosure provides a display device including the display panel described above.

[0063] The beneficial effects of this disclosure are as follows:

[0064] This disclosure addresses existing problems by providing a display panel and display device. By configuring different structures for a first display area (which serves as an under-display camera area) and a separately configured second display area, brightness consistency between the first and second display areas can be achieved without increasing the current density of the first display area. This extends the luminous lifespan of the first display area, improves display stability and user experience, and has broad application prospects. Attached Figure Description

[0065] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0066] Figure 1 A schematic top view of a display panel according to an embodiment of the present disclosure is shown;

[0067] Figure 2 This diagram shows a top-view comparison of the first display area and the second display area in the display panel of an embodiment of the present disclosure;

[0068] Figure 3 This diagram illustrates a first display area in a display panel according to an embodiment of the present disclosure;

[0069] Figure 4 A schematic diagram showing the second display area of ​​a display panel according to an embodiment of the present disclosure;

[0070] Figure 5A diagram showing the corresponding positions of key film layers in a display panel according to an embodiment of the present disclosure;

[0071] Figure 6 A schematic diagram of a first display area in a display panel according to another embodiment of the present disclosure is shown;

[0072] Figure 7 A schematic diagram of a first display area in a display panel according to another embodiment of the present disclosure;

[0073] Figure 8 A schematic top view of a first display area of ​​a display panel according to an embodiment of the present disclosure is shown;

[0074] Figure 9 Showing according to Figure 8 A schematic top view of the color filter partition of the display panel in the structure shown;

[0075] Figure 10 and Figure 11 A schematic top view of the first display area of ​​a display panel according to other embodiments of the present disclosure is shown. Detailed Implementation

[0076] To more clearly illustrate this disclosure, the preferred embodiments and accompanying drawings will be used for further description. Similar components in the drawings are indicated by the same reference numerals. Those skilled in the art should understand that the specific description below is illustrative rather than restrictive and should not be construed as limiting the scope of protection of this disclosure.

[0077] It should be noted that, unless otherwise defined, the technical or scientific terms used in this disclosure should have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "first," "second," and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "an," "a," or "the," etc., do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising," "including," or "including," etc., mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects.

[0078] In this disclosure, the term "co-layer arrangement" refers to two layers, components, elements, or portions that can be formed using the same fabrication process (e.g., patterning process), and that these two layers, components, elements, or portions are generally formed of the same material. For example, co-layer arrangement of two or more functional layers means that these co-layered functional layers can be formed using the same material layers and the same fabrication process, thereby simplifying the fabrication process of the display substrate.

[0079] Furthermore, this disclosure describes exemplary embodiments with reference to cross-sectional views and / or plan views as idealized exemplary drawings. In the drawings, the thickness of layers and the area of ​​regions are enlarged for clarity. Therefore, variations in shape relative to the drawings are contemplated due to, for example, manufacturing techniques and / or tolerances. Thus, exemplary embodiments should not be construed as being limited to the shapes of the regions shown herein, but rather include shape deviations due to, for example, manufacturing processes. For example, etched areas shown as rectangular would typically have curved features. Therefore, the regions shown in the drawings are schematic in nature, and their shapes are not intended to show the actual shapes of the areas of the device, nor are they intended to limit the scope of the exemplary embodiments.

[0080] The inventors discovered through research that, currently, to ensure sufficient light intake, under-display camera areas typically retain only the anode in the area corresponding to the camera, with the channel externally positioned, and the anode area reduced to maximize the aperture ratio. At the same time, to achieve the same brightness as other areas, the under-display camera area must have a higher current density than other areas, resulting in a shortened luminous lifespan in that area, affecting the application stability of the display product and the overall user experience.

[0081] To address at least one of the above problems, one embodiment of this disclosure provides a display panel, including: a first display area and a second display area, wherein the first display area is an under-display camera area.

[0082] The light-emitting efficiency of the pixels in the first display area is greater than that of the pixels in the second display area.

[0083] In this embodiment, by setting different structures for the first display area, which is implemented as an under-display camera area, and the separately set second display area, the brightness consistency of the first display area and the second display area can be achieved without increasing the current density of the first display area, thereby extending the luminous life of the first display area.

[0084] To illustrate the structure and function of this disclosure, a detailed description will be provided below with specific examples.

[0085] In a specific example, the display panel includes a display area and a non-display area. (See reference...) Figure 1 As shown, the display area AA includes a first display area AA1 and a second display area AA2. The first display area AA1 is an under-display camera area, which is the area where the front-facing camera in the display product is located. The front-facing camera is generally located below the display panel, on the side of the substrate opposite to the light-emitting surface, but is not limited to this. Optionally, the second display area AA2 is a conventional display area, that is, the area below the display product where no camera is located.

[0086] It should be noted that, although Figure 1The first display area AA1 is located above the display area AA and is surrounded by the second display area AA2. However, the embodiments disclosed herein are not intended to be limited thereto. The layout and positional relationship between the two can be set according to the specific product requirements.

[0087] Reference Figure 2 As shown, Figure 2 The diagram shows the specific structure of the first display area AA1 and the second display area AA2. Of course, the difference in the setting of the light-in and light-out areas is only reflected by the key film layers in the diagram.

[0088] Specifically, refer to Figure 2 As shown, the display panel includes a pixel defining layer 201. It can be understood that the pixel defining layer 201 is located on a substrate and is used to define a pixel opening KK. In embodiments of this disclosure, the pixel defining layer 201 is made of an opaque material, such as a black light-absorbing resin material. The orthographic projection of the pixel defining layer 201 disposed in the first display area AA1 onto the substrate is an annulus surrounding the pixel opening KK, defining a light-transmitting area between the pixel opening KK and the pixel opening KK. In other words, the pixel defining layer 201 surrounds the pixel opening KK, and the orthographic projection of the light-transmitting area onto the substrate surrounds the orthographic projection of the pixel defining layer 201 onto the substrate. In the second display area AA2, the pixel defining layer 201 is only used to define the pixel opening KK; that is, in the second display area AA2, light can only be emitted through the pixel opening KK, and other areas are opaque.

[0089] Figure 3 and Figure 4 A cross-sectional view of the display panel according to an embodiment of the present disclosure is further shown, wherein Figure 3 A cross-sectional view of the first display area AA1 is shown. Figure 4 A cross-sectional view of the second display area AA2 is shown, in which Figure 3 The under-display camera is represented by a dotted line, and the vertical arrow pointing towards the camera indicates that light passes through the display panel and enters the camera. Further details will not be provided below. Figure 5 Show Figure 3 A schematic diagram of the relevant structural relationships in the middle from a top-down perspective.

[0090] Combination Figure 3 and Figure 4 As shown, the display panel includes: a substrate 100, a pixel defining layer 201, a black matrix layer 300, a first light extraction layer 301, and a color filter layer. The color filter layer includes a first color filter sub-part disposed in a first display area AA1 and a second color filter sub-part disposed in a second display area AA2.

[0091] Specifically, refer to Figure 4As shown, the second display area AA2 adopts a COE light-emitting structure. That is, in the second display area AA2, the black matrix layer 300 includes a first opening CK1 corresponding to the pixel opening KK of the second display area AA2. The material of the black matrix layer 300 can be black resin or other opaque and / or light-absorbing materials. The second color filter sub-section includes a first color filter portion 312 of the first color, a second color filter portion 322 of the second color, and a third color filter portion 332 of the third color. Each color filter portion is correspondingly disposed in the first opening CK1, so that the first color light emitted from the first light-emitting layer 213 disposed in the pixel opening KK, the second color light emitted from the second light-emitting layer 223, and the third color light emitted from the third light-emitting layer 233 can only be emitted from the corresponding color filter portion.

[0092] Reference Figure 3 As shown, unlike the second display area AA2, the first display area AA1 does not have a black matrix layer 300, and the first display area AA1 has an additional first light extraction layer 301.

[0093] Specifically, as described above, the pixel defining layer 201 of the first display area AA1 defines the light-transmitting area between pixel openings KK. A first light extraction layer 301 is disposed in the first display area AA1 and includes second openings CK2 that correspond one-to-one with the pixel openings KK. A first color filter sub-part covers the second openings CK2 and includes a first color filter portion 312 of a first color, a second color filter portion 322 of a second color, and a third color filter portion 332 of a third color, with each color filter portion corresponding one-to-one in its respective second opening CK2. Here, "one-to-one correspondence" means that the second opening CK2 corresponding to the pixel opening KK covered by the first light-emitting layer 213 emitting the first color light covers the first color filter portion 312; the second opening CK2 corresponding to the pixel opening KK covered by the second light-emitting layer 223 emitting the second color light covers the second color filter portion 322; and the second opening CK2 corresponding to the pixel opening KK covered by the third light-emitting layer 233 emitting the third color light covers the third color filter portion 332. For example, the first color can be red (R), the second color can be green (G), and the third color can be blue (B).

[0094] Continue to refer to Figure 3 As shown, the surface of the second opening CK2 near the substrate 100 is smaller than the surface away from the substrate 100, and the refractive index of the color filter layer is greater than the refractive index of the first light extraction layer 301. Optionally, the first light extraction layer 301 is a low-refractive-index TOC (Total Organic Carbon) material (i.e., an organic encapsulation material layer, abbreviated as EOC), and the color filter layer is a high-refractive-index color resin material (i.e., a color filter layer).

[0095] Through the above settings, an outwardly expanding interface is formed between the first light extraction layer 301 and the color filter layer. Light incident on this interface can converge inwards, thereby increasing the light extraction efficiency of the first display area AA1. Conversely, since the color filter layers are separated by the black matrix layer 300, light incident on the black matrix layer 300 is absorbed or cannot converge and exit. Therefore, the light extraction efficiency of the second display area AA2 is lower than that of the first display area AA1, thus improving the local light extraction efficiency of the under-display camera area. Furthermore, when the anode area of ​​the first display area AA1 needs to be reduced, this loss can be compensated for by improving the light extraction efficiency. This allows for improved brightness uniformity of the first display area AA1 and the second display area AA2 without increasing the pixel drive current density, improving the luminous lifespan of the light-emitting layer of the first display area AA1, and enhancing the stability and user experience of the display panel.

[0096] Preferably, the cross-section of the first light extraction layer 301 perpendicular to the substrate 100 is trapezoidal, with a slope angle θ1 of greater than or equal to 45° and less than or equal to 85°; and the refractive index of the first light extraction layer 301 is greater than or equal to 1.45 and less than or equal to 1.5, while the refractive index of the color filter layer is greater than or equal to 1.6 and less than or equal to 1.75. In the embodiments of this disclosure, when describing a cross-sectional shape as trapezoidal, it means that the trapezoid is a trapezoid with a longer lower base closer to the substrate 100 and a shorter upper base farther from the substrate 100, which will not be elaborated further herein.

[0097] By utilizing this configuration and the combination of film shape and refractive index, it is possible to ensure that light incident on the interface between the first light extraction layer 301 and the color filter layer undergoes total internal reflection at that interface. This maximizes the light extraction efficiency of the first display area AA1 under the same conditions, thereby optimizing the brightness uniformity of the first display area AA1 and the second display area AA2 without increasing the pixel driving current density.

[0098] Considering that a thicker first light extraction layer 301 results in a longer slope, which can help improve light extraction efficiency, but a thicker layer will make it difficult for the color filter layer on it to fill the second opening CK2, it is more preferable that the thickness of the first light extraction layer 301 is greater than or equal to 1.5 μm and less than or equal to 3 μm.

[0099] Optionally, refer to Figure 3 and Figure 5 As shown, the orthographic projection of the second opening CK2 on the substrate 100 covers the orthographic projection of the pixel opening KK on the substrate 100. The distance d5 from the edge of the orthographic projection of the second opening CK2 on the substrate 100 to the edge of the orthographic projection of the corresponding pixel opening KK on the substrate 100 is greater than or equal to 0 μm and less than or equal to 1 μm.

[0100] When the distance d5 is greater than the upper limit, the light output gain cannot produce an effective enhancement effect. If the distance d5 is lower than the lower limit, that is, d5 is negative, it means that the orthogonal projection of the light extraction layer 301 on the substrate 100 enters the orthogonal projection range of the pixel opening KK on the substrate 100, which will cause the normal orthogonal viewing angle light output to be disordered.

[0101] Continue to refer to Figure 3 and Figure 4 As shown, the display panel also includes an anode layer disposed on the side of the pixel defining layer 201 near the substrate 100. The anode layer includes a plurality of first anodes 212 disposed in the first display area AA1, and of course, the anode layer may also include a plurality of second anodes 222 disposed in the second display area AA2.

[0102] A further preferred option is to refer to Figure 3 As shown, the gaps or overlapping portions between adjacent color filter portions fall within the orthogonal projection of the first anode 212 onto the orthogonal projection of the substrate 100.

[0103] This setting ensures that the boundary between adjacent pixels and their corresponding color filter portions is completely covered by the first anode in the orthogonal projection onto the substrate. This prevents slits or overlapping portions of the color filter portions from appearing in the cutout area outside the first anode, thus preventing the light passing through the display panel from being intensified by diffraction and effectively improving image quality.

[0104] The first color filter sub-section includes a first region covering the surface of the first light extraction layer 301 away from the substrate 100, the orthographic projection of the first region onto the substrate 100 falling within the orthographic projection range of the first anode 212 onto the substrate 100. Figure 3 The cross-sectional portion shown refers to the first second color filter portion 322, the second first color filter portion 312, and the second third color filter portion 332 from the left. In other words, the first color filter sub-portion may include the color filter portion whose orthogonal projection of the substrate 100 falls within the orthogonal projection range of the first anode 212 on the substrate 100.

[0105] Reference Figure 3 and Figure 5 As shown, the width d4 of the overlapping portion of the first region and the pixel defining layer 201 is greater than or equal to 2μm and less than or equal to 5μm, and the width d2 of the overlapping portion of the orthographic projection of the color filter portion adjacent to the first region and different in color on the substrate 100 with the first anode 212 is greater than or equal to 1μm and less than or equal to 3μm.

[0106] By setting the size requirements of width d4 and width d2, process fluctuations can be fully taken into account, and sufficient process margin can be reserved for the manufacturing process. Width d4 can ensure that the color filter part can fully cover the pixel opening KK, and width d2 can ensure that the slits or overlapping parts between adjacent color filter parts will not appear in the hollow area outside the first anode, thereby effectively preventing the diffraction from being aggravated when light passes through the screen and improving the image quality.

[0107] Alternatively, taking into account the process margin, refer to Figure 3 As shown, the distance d1 between the orthographic projection of the pixel defining layer 201 on the substrate 100 and the orthographic projection of the first anode 212 on the substrate 100 should be greater than or equal to 0 μm and less than or equal to 3 μm.

[0108] When the distance d1 is greater than the upper limit, the size of the first anode 212 may be too large, blocking too much light in the light-transmitting area. When the distance d1 is negative, that is, when the size of the first anode 212 is too small to fully support the pattern of the pixel defining layer 201, the pixel defining layer 201 may lack sufficient support and break.

[0109] It is worth noting that when the slits or overlapping portions of adjacent color filters are placed within the range of the first anode, the following will occur: Figure 3 The diagram shows an alternation between smaller color filter portions (i.e., the first region) and larger color filter portions of similar size.

[0110] Considering that the overlapping area between adjacent color filter parts is relatively dark, when the overlap occurs, if its size is too large, it will affect the amount of light entering the camera and also increase diffraction. If there is a gap between adjacent color filter parts, if the gap is too large, it will affect the layout space of the light-transmitting area, which will also affect the amount of light entering the camera, provided that the slit falls within the range of the first anode.

[0111] More preferably, refer to Figure 3 and Figure 5 As shown, in the first display area AA1, the spacing d3 between adjacent color filters is greater than or equal to -3μm and less than or equal to 1μm.

[0112] It can be understood that when the spacing d3 is negative, it means that there is an overlapping area between adjacent color filter parts; when the spacing d3 is positive, it means that there is a gap between adjacent color filter parts; and when the spacing d3 is 0, it means that the two are closely attached.

[0113] Alternatively, the display panel may further include a cathode layer 204 on which a covering light-emitting layer is disposed. Considering that even if a transparent conductive material is chosen for the cathode layer 204, it will still affect the light transmittance of the light-transmitting area, in order to improve transmittance, the pattern of the cathode layer 204 can be prepared by a laser patterning process, so that its pattern boundary is flush with the boundary of the first anode 212, thus forming an island-shaped cathode. The patterns of the cathode layers 204 can be connected by signal lines made of transparent metal oxide material to achieve signal transmission. For example, the material of the signal lines can be ITO, but this disclosure is not limited to this.

[0114] Continue to refer to Figure 3 and Figure 4 As shown, optionally, an encapsulation layer 500 is provided between the cathode layer 204 and the first light extraction 301 in the first display area AA1, and between the cathode layer 204 and the black matrix layer 300 in the second display area AA2. A planarization layer 400 is also included on the side of the color filter layer away from the substrate 100. The refractive index of the protective layer 400 can be greater than or equal to 1.45 and less than or equal to 1.5. The material of the planarization layer 400 can be a photocurable resin; of course, this layer can also serve as a protective layer.

[0115] In some alternative embodiments, the first display area AA1 is implemented as Figure 6 The exemplary structure shown shows that the structure of the second display area AA2 is still as described. Figure 4 As shown.

[0116] Combination Figure 6 and Figure 4 As shown, the display panel includes: a substrate 100, a pixel defining layer 201, a black matrix layer 300, a color filter layer, and a second light extraction layer 400. The color filter layer includes a first color filter sub-section disposed in a first display area AA1 and a second color filter sub-section disposed in a second display area AA2.

[0117] It should be noted that, for the sake of consistency in identification, the second light extraction layer is still referred to as "400" in this embodiment. In the embodiments of this disclosure, the second light extraction layer 400 can also serve as a planarization layer and cover the surface of the color filter layer away from the substrate 100.

[0118] Considering the structure of the second display area AA2, as follows Figure 4 As shown, it will not be repeated here, but those skilled in the art should understand that... Figure 4 In this embodiment, the number 400 is the second light extraction layer.

[0119] Specifically, refer to Figure 6 As shown, unlike the second display area AA2, the first display area AA1 does not have a black matrix layer 300, and the first display area AA1 has an additional second light extraction layer 301.

[0120] Specifically, the pixel defining layer 201 of the first display area AA1 defines the light-transmitting area between pixel openings KK. The first color filter sub-part includes a plurality of protrusion structures 302-1 that are configured one-to-one with the pixel openings KK. Here, the one-to-one correspondence means that the pixel opening KK covered by the first light-emitting layer 213 emitting the first color light corresponds to the first color filter portion 312, the pixel opening KK covered by the second light-emitting layer 223 emitting the second color light corresponds to the second color filter portion 322, and the pixel opening KK covered by the third light-emitting layer 233 emitting the third color light corresponds to the third color filter portion 332. For example, the first color can be red (R), the second color can be green (G), and the third color can be blue (B).

[0121] The second light extraction layer 400 is disposed on the surface of the color filter layer away from the substrate 100, and the refractive index of the color filter layer is greater than the refractive index of the second light extraction layer 400. Optionally, the second light extraction layer 301 is a low-refractive-index photocurable resin material, and the color filter layer is a high-refractive-index color resin material (i.e., the color filter layer).

[0122] With the above setup, the light emitted from the pixel opening KK is essentially directly incident on the corresponding raised structure 302-1, then passes through the interface between the color filter layer and the second light extraction layer 400 before exiting. Since the refractive index of the raised structure 302-1 is greater than that of the second light extraction layer 400, the light is refracted at the interface and converges inwards, thus increasing the light extraction efficiency of the first display area AA1. Conversely, because the color filter layers are separated by the black matrix layer 300, the light incident on the black matrix layer 300 is absorbed or cannot converge before exiting, resulting in a lower light extraction efficiency for the second display area AA2 than for the first display area AA1. This improves the local light extraction efficiency of the under-display camera area. Furthermore, when the anode area of ​​the first display area AA1 needs to be reduced, this loss can be compensated for by the improved light extraction efficiency. This allows for improved brightness uniformity of the first display area AA1 and the second display area AA2 without increasing the pixel driving current density, improving the luminous lifespan of the light-emitting layer of the first display area AA1, and enhancing the stability and user experience of the display panel.

[0123] Preferably, the protrusion structure 302-1 has a trapezoidal cross section perpendicular to the substrate 100, the slope angle θ2 of the trapezoid is greater than or equal to 65° and less than or equal to 85°, the refractive index of the color filter layer is greater than or equal to 1.6 and less than or equal to 1.75, and the refractive index of the second light extraction layer 400 is greater than or equal to 1.45 and less than or equal to 1.5.

[0124] By utilizing this configuration and the combination of film shape and refractive index, it is possible to ensure that the light incident on the interface between the color filter layer and the second light extraction layer 400 is refracted at the interface with the best converging effect, thereby maximizing the light extraction efficiency of the first display area AA1 under the same conditions. This allows for the optimization of the brightness uniformity of the first display area AA1 and the second display area AA2 without increasing the driving current density of the pixels.

[0125] Considering that the thicker the protrusion structure 302-1, the longer the slope of the protrusion structure, which can help improve the light extraction efficiency, the thicker the structure, the more difficult it will be for the second light extraction layer 400 to fill the opening between the two protrusion structures 302-1.

[0126] Optionally, the thickness of the protrusion structure 302-1 is greater than or equal to 3 μm and less than or equal to 4 μm.

[0127] Alternatively, refer to Figure 6 As shown, the first color film sub-part also includes: a connecting structure 302-2 covering the light-transmitting area. The connecting structure and the color film part of the same color in the adjacent protrusion structure 302-1 are combined into a whole. From the perspective of manufacturing process, the connecting structure 302-2 and the protrusion structure 302-1 connected thereto can be formed by the Halftone process.

[0128] The orthographic projection edge of the protrusion 302-1, which is not combined with the connection structure 302-2, falls within the orthographic projection of the pixel defining layer 201 on the substrate 100, and the distance d5 from the edge to the orthographic projection edge of the corresponding pixel opening KK on the substrate 100 is greater than or equal to 0 μm and less than or equal to 1 μm.

[0129] When the distance d5 is greater than the upper limit, the light output gain cannot produce an effective enhancement effect. If the distance d5 is lower than the lower limit, that is, d5 is negative, it means that the orthogonal projection of the protrusion structure 302-1 on the substrate 100 enters the orthogonal projection range of the pixel opening KK on the substrate 100, which will cause the normal orthogonal viewing angle light output to be disordered.

[0130] In addition, to prevent the gap between the two protruding structures 302-1 from falling into the hollow area outside the two first anodes, the above-mentioned connecting structure 302-2 is provided in the embodiments of this disclosure.

[0131] Optionally, the thickness w2 of the connecting structure 302-2 is greater than or equal to 1 μm and less than or equal to 1.5 μm. In other words, by setting the thicknesses w1 and w2 in combination, it can be ensured that after the protruding structure 302-1 and the connecting structure 302-2 are connected as a whole, a sufficiently thick protruding slope can still be maintained, thereby ensuring a good light-gathering effect even at the slit position.

[0132] Continue to refer to Figure 6 As shown, the display panel further includes an anode layer disposed on the side of the pixel defining layer 201 near the substrate 100. The anode layer includes a plurality of first anodes 212 disposed in the first display area AA1. The protrusion structure 302-1 includes a first protrusion structure not coupled to the connection structure 302-2.

[0133] Optionally, the gaps or overlapping portions between adjacent color filter portions fall within the orthographic projection of the first anode 212 onto the orthographic projection of the substrate 100.

[0134] This setting ensures that the boundary between adjacent pixels and their corresponding color filter portions is completely covered by the first anode in the orthogonal projection onto the substrate. This prevents slits or overlapping portions of the color filter portions from appearing in the cutout area outside the first anode, thus preventing the light passing through the display panel from being intensified by diffraction and effectively improving image quality.

[0135] Optionally, the orthographic projection of the first protrusion structure onto the substrate 100 falls within the orthographic projection range of the first anode 212 onto the substrate 100. The width d4 of the overlapping portion of the first protrusion structure and the pixel defining layer 201 is greater than or equal to 2 μm and less than or equal to 5 μm. The width d2 of the overlapping portion of the orthographic projection of the color filter portion adjacent to the first protrusion structure and different in color onto the substrate 100 and the first anode 212 is greater than or equal to 1 μm and less than or equal to 3 μm.

[0136] By setting the size requirements for widths d4 and d2, process fluctuations can be fully taken into account, and sufficient process margin can be reserved for the manufacturing process to ensure that the color filter can fully cover the pixel opening KK. At the same time, width d2 can ensure that, while taking into account process fluctuations, the narrow gaps or overlapping parts between the color filter parts are avoided from appearing in the hollow area outside the anode.

[0137] Alternatively, taking into account the process margin, refer to Figure 6 As shown, the distance d1 between the orthographic projection of the pixel defining layer 201 on the substrate 100 and the orthographic projection of the first anode 212 on the substrate 100 should be greater than or equal to 0 μm and less than or equal to 3 μm.

[0138] When the distance d1 is greater than the upper limit, the size of the first anode 212 may be too large, blocking too much light in the light-transmitting area. When the distance d1 is negative, that is, when the size of the first anode 212 is too small to fully support the pattern of the pixel defining layer 201, the pixel defining layer 201 may lack sufficient support and break.

[0139] It is worth noting that when the slits or overlapping portions of adjacent color filters are placed within the range of the first anode, the following will occur: Figure 6 The diagram shows an alternation between smaller color filter portions (i.e., the first protrusion structure) and larger color filter portions of similar size.

[0140] Considering that the overlapping area between adjacent color filter parts is relatively dark, when the overlap occurs, if its size is too large, it will affect the amount of light entering the camera and also increase diffraction. If there is a gap between adjacent color filter parts, if the gap is too large, it will affect the layout space of the light-transmitting area, which will also affect the amount of light entering the camera, provided that the slit falls within the range of the first anode.

[0141] More preferably, refer to Figure 6 As shown, in the first display area AA1, the spacing d3 between adjacent color filters is greater than or equal to -3μm and less than or equal to 1μm.

[0142] It can be understood that when the spacing d3 is negative, it means that there is an overlapping area between adjacent color filter parts; when the spacing d3 is positive, it means that there is a gap between adjacent color filter parts; and when the spacing d3 is 0, it means that the two are closely attached.

[0143] Alternatively, the display panel may further include a cathode layer 204 on which a covering light-emitting layer is disposed. The pattern of the cathode layer 204 is similar to the structure of the embodiment described above, and will not be described again here.

[0144] In some alternative embodiments, the first display area AA1 is implemented as Figure 7 The exemplary structure shown shows that the structure of the second display area AA2 is still as described. Figure 4 As shown.

[0145] Combination Figure 7 and Figure 4 As shown, the display panel includes: a substrate 100, a pixel defining layer 201, a black matrix layer 300, a third light extraction layer 304, and a color filter layer. The color filter layer includes a first color filter sub-part disposed in a first display area AA1 and a second color filter sub-part disposed in a second display area AA2.

[0146] Considering the structure of the second display area AA2, as follows Figure 4 As shown, it will not be elaborated further here.

[0147] Specifically, refer to Figure 7 As shown, unlike the second display area AA2, the first display area AA1 does not have a black matrix layer 300, and the first display area AA1 has an additional third light extraction layer 304.

[0148] Specifically, the pixel defining layer 201 in the first display area AA1 defines the light-transmitting area between pixel openings KK. A third light extraction layer 304 is disposed in the first display area AA1 and includes protrusions corresponding one-to-one with the pixel openings KK. A first color filter sub-part, consisting of a first color filter portion, a second color filter portion, and a third color filter portion, each corresponding one-to-one with the pixel openings KK and covering the protrusions. The refractive index of the color filter layer is less than the refractive index of the third light extraction layer 304.

[0149] With the above setup, the light emitted from the pixel aperture KK is essentially directly incident on the corresponding raised structure and then exits through the interface between the color filter layers. Since the refractive index of the raised structure is greater than that of the color filter layer, the light is refracted at the interface and converges inward, thereby increasing the light extraction efficiency of the first display area AA1. Conversely, since the color filter layers are separated by the black matrix layer 300, the light incident on the black matrix layer 300 is absorbed or cannot converge and exit, resulting in a lower light extraction efficiency for the second display area AA2 than for the first display area AA1. This improves the local light extraction efficiency of the under-display camera area. Furthermore, when it is necessary to reduce the anode area of ​​the first display area AA1, this loss can be compensated for by the improved light extraction efficiency. This allows for improved brightness uniformity of the first display area AA1 and the second display area AA2 without increasing the pixel drive current density, improving the luminous lifespan of the light-emitting layer of the first display area AA1, and enhancing the stability and user experience of the display panel.

[0150] Optionally, the protrusion structure has a trapezoidal cross section perpendicular to the substrate 100, the slope angle θ3 of the trapezoid is greater than or equal to 65° and less than or equal to 85°, and the refractive index of the third light extraction layer 304 is greater than or equal to 1.65 and less than or equal to 1.8, and the refractive index of the color filter layer is greater than or equal to 1.45 and less than or equal to 1.55.

[0151] By utilizing this configuration and the combination of film shape and refractive index, it is possible to ensure that the light incident on the interface between the third light extraction layer 304 and the color filter layer is refracted at the interface with the best converging effect. This maximizes the light extraction efficiency of the first display area AA1 under the same conditions, thereby optimizing the brightness uniformity of the first display area AA1 and the second display area AA2 without increasing the driving current density of the pixels.

[0152] Considering that the thicker the third light extraction layer 304 is, the longer the slope of the raised structure will be, which can help improve the light extraction efficiency, the thicker the layer will make it difficult for the color filter layer to fill the height difference between the raised structure and the opening between the two raised structures.

[0153] Optionally, the thickness w3 of the protrusion structure is greater than or equal to 1 μm and less than or equal to 2 μm.

[0154] Alternatively, refer to Figure 7 As shown, the first color film sub-part also includes: a connecting structure 302-3 covering the light-transmitting area, the connecting structure 302-3 being integrated with the adjacent color film part of the same color as a whole.

[0155] The orthographic projection edge of the color filter portion not combined with the connection structure 302-3 falls within the orthographic projection of the pixel defining layer 201 on the substrate 100, and the distance d5 from the edge to the corresponding pixel opening KK at the orthographic projection edge of the substrate 100 is greater than or equal to 0 μm and less than or equal to 1 μm.

[0156] When the distance d5 is greater than the upper limit, the light output gain cannot produce an effective enhancement effect. If the distance d5 is lower than the lower limit, that is, d5 is negative, it means that the orthogonal projection of the protrusion structure into the pixel opening KK is within the orthogonal projection range of the substrate 100, which will cause the normal orthogonal viewing angle light output to be disordered.

[0157] In addition, to prevent the gap between the two protruding structures from falling into the hollow area outside the two first anodes, the above-mentioned connecting structure 302-3 is provided in the embodiments of this disclosure.

[0158] Continue to refer to Figure 7 As shown, because the color filter layer covers the third light extraction layer 304, the relationship between the color filter portions follows... Figure 3 The structure shown has similar requirements.

[0159] Optionally, the gaps or overlapping portions between adjacent color filter portions fall within the orthographic projection of the first anode 212 onto the orthographic projection of the substrate 100.

[0160] This setting ensures that the boundary between adjacent pixels and their corresponding color filter portions is completely covered by the first anode in the orthogonal projection onto the substrate. This prevents slits or overlapping portions of the color filter portions from appearing in the cutout area outside the first anode, thus preventing the light passing through the display panel from being intensified by diffraction and effectively improving image quality.

[0161] The first color filter sub-section includes a first region covering the surface of the third light extraction layer 304 away from the substrate 100, and the orthographic projection of the first region onto the substrate 100 falls within the orthographic projection range of the first anode 212 onto the substrate 100.

[0162] The width d4 of the overlapping portion of the first region and the pixel defining layer 201 is greater than or equal to 2μm and less than or equal to 5μm. The width d2 of the overlapping portion of the orthographic projection of the color filter portion adjacent to the first region and different in color on the substrate 100 and the first anode 212 is greater than or equal to 1μm and less than or equal to 3μm.

[0163] By setting the size requirements for widths d4 and d2, process fluctuations can be fully taken into account, and sufficient process margin can be reserved for the manufacturing process to ensure that the color filter can fully cover the pixel opening KK. At the same time, width d2 can ensure that, while taking into account process fluctuations, the narrow gaps or overlapping parts between the color filter parts are avoided from appearing in the hollow area outside the anode.

[0164] Alternatively, taking into account the process margin, refer to Figure 6 As shown, the distance d1 between the orthographic projection of the pixel defining layer 201 on the substrate 100 and the orthographic projection of the first anode 212 on the substrate 100 should be greater than or equal to 0 μm and less than or equal to 3 μm.

[0165] When the distance d1 is greater than the upper limit, the size of the first anode 212 may be too large, blocking too much light in the light-transmitting area. When the distance d1 is negative, that is, when the size of the first anode 212 is too small to fully support the pattern of the pixel defining layer 201, the pixel defining layer 201 may lack sufficient support and break.

[0166] Similarly, considering that the overlapping area between adjacent color filter parts is relatively dark, if the size of the overlap is too large, it will affect the amount of light entering the camera and also increase diffraction. If there is a gap between adjacent color filter parts, and the gap is too large, it will affect the layout space of the light-transmitting area, which will also affect the amount of light entering the camera, provided that the slit falls within the range of the first anode.

[0167] More preferably, refer to Figure 7 As shown, in the first display area AA1, the spacing d3 between adjacent color filters is greater than or equal to -3μm and less than or equal to 1μm.

[0168] Alternatively, the display panel may further include: a cathode layer 204 covering the light-emitting layer, an encapsulation layer 500 disposed on the side of the cathode layer 204 away from the substrate 100, and a protective layer 400 disposed on the side of the color filter layer away from the substrate 100. The pattern of the cathode layer 204 and the material of the protective layer 400 are similar to the structure of the above embodiment, and will not be described in detail here.

[0169] Considering Figure 3 , Figure 6 and Figure 7In the color filter layer shown, the first, second, and third color filter portions of the first color filter sub-section are alternately arranged with areas falling within the range of the first anode 212 and areas covering the light-transmitting portion. That is, the areas covering the light-transmitting portion are pixel-level. This increases the patterning difficulty of the color filter layer and results in a large number of gaps between the color filter portions, posing a risk of increased diffraction. To further optimize the structure, this disclosure proposes another embodiment based on the structure of the embodiments described above, but with improvements only to the color filter layer.

[0170] In some other alternative embodiments, combined with Figure 3 , Figure 6 and Figure 7 The cross-sectional structure shown, and further referenced Figure 8 As shown, the first display area AA1 includes a light-transmitting area between a pixel opening KK defined by a pixel defining layer 201 and the pixel opening KK.

[0171] The first color filter sub-section further includes: multiple color filter partitions covering the light-transmitting area, the multiple color filter partitions including a first color filter partition 302-11 of a first color, a second color filter partition 302-12 of a second color, and a third color filter partition 302-13 of a third color. For consistency, exemplarily, the first color is still red, the second color is green, and the third color is blue.

[0172] Each color filter partition covers multiple light-transmitting areas. A light-transmitting area represents the light-transmitting area surrounding a pixel opening KK. Adjacent color filter partitions have different colors, and the projected area of ​​each color filter partition on the substrate 100 is approximately the same.

[0173] It should be noted that the portion of the first color filter sub-section that corresponds one-to-one with the pixel opening KK is... Figure 8 This is represented by circular or elliptical areas within the color filter partitions. Of course, portions of the color filter that share the same color as a partition cannot be shown in the diagram because they are connected to the partition as a whole.

[0174] It should be particularly noted that, because this embodiment is... Figure 3 , Figure 6 and Figure 7 The improved structure based on the embodiment is similar to the structure of the above embodiment except for the color filter partition.

[0175] Specifically, refer to Figure 9 As shown, Figure 9 Show Figure 8 An exemplary cross-sectional view of the second color filter partition 302-12, the structure of which is... Figure 3 The implementation examples are based on the architecture.

[0176] Depend on Figure 9As can be seen, the material covering the large area of ​​the light-transmitting region in the figure is the green color filter portion. Thus, the red first color filter portion 312 and the blue second color filter portion 322 are both the first region shown above, that is, the orthographic projection of the substrate 100 falls within the orthographic projection of the first anode 212 on the substrate 100. The second color filter portion 322 covers the second opening CK2 and the light-transmitting region between each second opening CK2.

[0177] The pattern and distance requirements of the first light extraction layer 301 are consistent with... Figure 3 The illustrated embodiments are the same. It can be understood that... Figure 6 and Figure 7 The structure shown is similar, except that the coverage of the color filter is changed. The other structures and the relationship between each part of the color filter layer and the second light extraction layer 400 and the third light extraction layer 304 remain unchanged, and will not be described in detail here.

[0178] This design reduces the difficulty of the manufacturing process and the number of gaps between different colored film sections.

[0179] More importantly, in this embodiment, by making the projected areas of the first color filter partition 302-11, the second color filter partition 302-12, and the third color filter partition 302-13 on the substrate 100 approximately the same, the white balance of the under-display camera can be improved. If there is a significant difference in area between different color filters, under dark conditions, the color reflected in the dark will tend towards the color with the larger area; for example, the dark hue may appear as one of red, green, or blue. The smaller the size of each color filter partition, the better the white balance effect. Of course, a smaller size will result in more gaps; the specific effect should be adjusted according to the required compromise.

[0180] Optionally, in the first display area AA1, the total area of ​​the color filter partitions of each color projected onto the substrate is approximately the same.

[0181] It should be noted that in the embodiments of this disclosure, the fact that each color filter partition has a roughly the same projected area on the substrate 100 can mean that each color filter partition has a completely identical projected area on the substrate 100; or that each color filter partition does not have a completely identical projected area on the substrate 100, but the areas are similar but there are some differences, which will not be elaborated here.

[0182] Alternatively, in order to improve diffraction between color filter zones, the spacing between adjacent color filter zones is greater than or equal to 0 μm and less than or equal to 3 μm.

[0183] Alternatively, refer to Figure 10 and Figure 11As shown, considering that there is a diffraction problem at the junction of the linear boundaries between different color filter zones due to the reflected light in the film layer, while setting color filter zones improves the white balance problem, the gaps between the zones are located in the light-transmitting area, which also poses a risk of aggravated diffraction when the transmitted light passes through the display panel.

[0184] Preferably, the orthographic projection boundary of each color filter zone on the substrate is wavy.

[0185] like Figure 10 As shown, at least one boundary of the first color filter partition 302-14, the second color filter partition 302-15, and the third color filter partition 302-16 in the orthogonal projection boundary of the substrate 100 is wavy.

[0186] Figure 11 Another variant structure is shown, indicating that the shapes of the first color filter partition 302-17, the second color filter partition 302-18, and the third color filter partition 302-19 are not limited to stripes, but can be serpentine.

[0187] The above structure, through the wave treatment at the boundary, achieves the effect of color separation on the diffraction of reflected light, while at the same time reducing the diffraction of transmitted light.

[0188] Based on the same inventive concept, embodiments of this disclosure also provide a display device, including the display panel described in the above embodiments. Since the display panel included in the display device provided in this disclosure corresponds to the display panel provided in the above embodiments, the preceding embodiments are also applicable to the display device provided in this embodiment, and will not be described in detail here.

[0189] In this embodiment, the display device can be any product or component with display functionality and including an under-screen camera area, such as an in-vehicle display device, mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, or navigator. When the above-mentioned display panel is loaded into a real device, it is possible to improve the brightness consistency between the under-screen camera area and the conventional display area without increasing the local driving current density of the under-screen camera area, thereby improving the product's light emission lifespan and stability, and significantly enhancing the user experience.

[0190] Obviously, the above embodiments of this disclosure are merely examples for clearly illustrating this disclosure, and are not intended to limit the implementation of this disclosure. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all implementation methods here. Any obvious variations or modifications derived from the technical solutions of this disclosure are still within the protection scope of this disclosure.

Claims

1. A display panel, characterized in that, include: A first display area and a second display area, wherein the first display area is an under-display camera area. The light emission efficiency of the pixels in the first display area is greater than that of the pixels in the second display area.

2. The display panel according to claim 1, characterized in that, Also includes: Substrate; A pixel defining layer is disposed on the substrate and includes a plurality of pixel openings; A black matrix layer is disposed in the second display area on the side of the pixel delimiting layer away from the substrate, and the black matrix layer includes a plurality of first openings corresponding to the pixel openings of the second display area; A first light extraction layer is disposed in the first display area, including: a second opening that corresponds one-to-one with the pixel opening, wherein the surface of the second opening closer to the substrate is smaller than the surface farther from the substrate; as well as The color filter layer includes a first color filter sub-section covering the second opening and a second color filter sub-section covering the first opening, wherein the refractive index of the color filter layer is greater than the refractive index of the first light extraction layer.

3. The display panel according to claim 2, characterized in that, The first light extraction layer has a trapezoidal cross-section perpendicular to the substrate, and the slope angle of the trapezoid is greater than or equal to 45° and less than or equal to 85°; and The refractive index of the first light extraction layer is greater than or equal to 1.45 and less than or equal to 1.5, and the refractive index of the color filter layer is greater than or equal to 1.6 and less than or equal to 1.

75.

4. The display panel according to claim 2, characterized in that, The first display area includes a pixel opening defined by the pixel defining layer and a light-transmitting area between the pixel openings; The orthographic projection of the second opening onto the substrate covers the orthographic projection of the pixel opening onto the substrate. and The distance from the edge of the second opening in the orthographic projection of the substrate to the edge of the corresponding pixel opening in the orthographic projection of the substrate is greater than or equal to 0 μm and less than or equal to 1 μm.

5. The display panel according to claim 2, characterized in that, Also includes: An anode layer disposed on the side of the pixel defining layer near the substrate, the anode layer including a plurality of first anodes disposed in the first display area. The first color filter sub-section includes a first region covering the surface of the first light extraction layer away from the substrate, wherein the orthographic projection of the first region onto the substrate falls within the orthographic projection range of the first anode onto the substrate. The width of the overlap between the first region and the pixel defining layer is greater than or equal to 2 μm and less than or equal to 5 μm. The width of the overlapping portion of the orthographic projection of the color filter portion adjacent to the first region and having a different color from it on the substrate and the first anode is greater than or equal to 1 μm and less than or equal to 3 μm.

6. The display panel according to claim 1, characterized in that, Also includes: Substrate; A pixel defining layer is disposed on the substrate and includes a plurality of pixel openings; A black matrix layer is disposed in the second display area on the side of the pixel delimiting layer away from the substrate, and the black matrix layer includes a plurality of first openings corresponding to the pixel openings of the second display area; The color filter layer includes a first color filter sub-section disposed in the first display area and a second color filter sub-section disposed in the first opening. The first color filter sub-section includes a plurality of protrusions corresponding one-to-one with the pixel openings. A second light extraction layer is disposed on the surface of the color filter layer away from the substrate. The refractive index of the color filter layer is greater than that of the second light extraction layer.

7. The display panel according to claim 6, characterized in that, The thickness of the protrusion structure is greater than or equal to 3 μm and less than or equal to 4 μm, and / or The protrusion structure has a trapezoidal cross-section perpendicular to the substrate, the slope angle of the trapezoid is greater than or equal to 65° and less than or equal to 85°, the refractive index of the color filter layer is greater than or equal to 1.6 and less than or equal to 1.75, and the refractive index of the second light extraction layer is greater than or equal to 1.45 and less than or equal to 1.

5.

8. The display panel according to claim 6, characterized in that, The first display area includes a pixel opening defined by the pixel defining layer and a light-transmitting area between the pixel openings. The first color filter sub-part includes: a first color filter portion of a first color, a second color filter portion of a second color, and a third color filter portion of a third color. The first color filter sub-part further includes: a connecting structure covering the light-transmitting area, wherein the connecting structure is integrated with the color filter portion of the same color in the adjacent raised structure to form a whole. The orthographic projection edge of the protrusion structure not combined with the connection structure on the substrate falls within the orthographic projection of the pixel defining layer on the substrate, and the distance from the edge to the corresponding pixel opening on the orthographic projection edge of the substrate is greater than or equal to 0 μm and less than or equal to 1 μm.

9. The display panel according to claim 8, characterized in that, The thickness of the connection structure is greater than or equal to 1 μm and less than or equal to 1.5 μm.

10. The display panel according to claim 8, characterized in that, Also includes: An anode layer disposed on the pixel defining layer near the substrate, the anode layer including a plurality of first anodes disposed in the first display area, and the protrusion structure including first protrusion structures not coupled to the connection structure. The orthographic projection of the first protrusion structure onto the substrate falls within the orthographic projection range of the first anode onto the substrate. The width of the overlapping portion between the first protrusion structure and the pixel defining layer is greater than or equal to 2 μm and less than or equal to 5 μm. The width of the overlapping portion of the orthographic projection of the color filter portion adjacent to and different in color from the first protrusion structure on the substrate and the first anode is greater than or equal to 1 μm and less than or equal to 3 μm.

11. The display panel according to claim 1, characterized in that, Also includes: Substrate; A pixel defining layer is disposed on the substrate and includes a plurality of pixel openings; A black matrix layer is disposed in the second display area on the side of the pixel delimiting layer away from the substrate, and the black matrix layer includes a plurality of first openings corresponding to the pixel openings of the second display area; The third light extraction layer is disposed in the first display area and includes protrusions that correspond one-to-one with the pixel openings; as well as The color filter layer includes a first color filter sub-section disposed in the first display area and a second color filter sub-section disposed in the first opening. The first color filter sub-section includes a first color filter portion, a second color filter portion, and a third color filter portion, each corresponding to one of the pixel openings, and each correspondingly covers the protruding structure. The refractive index of the color filter layer is less than that of the third light extraction layer.

12. The display panel according to claim 11, characterized in that, The thickness of the protrusion structure is greater than or equal to 1 μm and less than or equal to 2 μm, and / or The protrusion structure has a trapezoidal cross-section perpendicular to the substrate, and the slope angle of the trapezoid is greater than or equal to 65° and less than or equal to 85°. The refractive index of the third light extraction layer is greater than or equal to 1.65 and less than or equal to 1.8, and the refractive index of the color filter layer is greater than or equal to 1.45 and less than or equal to 1.

55.

13. The display panel according to claim 11, characterized in that, The first display area includes a pixel opening defined by the pixel defining layer and a light-transmitting area between the pixel openings. The first color filter sub-part further includes: a connecting structure covering the light-transmitting area, wherein the connecting structure is integrated with an adjacent color filter sub-part of the same color to form a whole. The orthographic projection edge of the color filter portion not combined with the connection structure on the substrate falls within the orthographic projection of the pixel defining layer on the substrate, and the distance from this edge to the corresponding pixel opening at the orthographic projection edge of the substrate is greater than or equal to 0 μm and less than or equal to 1 μm.

14. The display panel according to claim 2, 6, or 11, characterized in that, Also includes: An anode layer disposed on the side of the pixel defining layer near the substrate, the anode layer including a plurality of first anodes disposed in the first display area. The first display area includes a pixel opening defined by the pixel defining layer and a light-transmitting area between the pixel openings. The first color filter sub-section includes a first color filter portion of a first color, a second color filter portion of a second color, and a third color filter portion of a third color. The gaps or overlapping portions between adjacent color filter portions fall within the orthogonal projection of the first anode onto the orthogonal projection of the substrate.

15. The display panel according to claim 14, characterized in that, In the first display area, the spacing between adjacent color filter portions is greater than or equal to -3μm and less than or equal to 1μm.

16. The display panel according to any one of claims 2-13, characterized in that, The first display area includes a pixel opening defined by the pixel defining layer and a light-transmitting area between the pixel openings. The first color filter sub-part further includes: a plurality of color filter partitions covering the light-transmitting area, wherein the plurality of color filter partitions include a first color filter partition of a first color, a second color filter partition of a second color, and a third color filter partition of a third color, wherein, Each of the color filter zones covers multiple light-transmitting areas. Adjacent color filter zones have different colors, and each color filter zone has approximately the same projected area on the substrate.

17. The display panel according to claim 16, characterized in that, At least one boundary of the orthographic projection boundary of each color filter partition on the substrate is wavy. and / or In the first display area, the total area of ​​the color filter partitions for each color projected onto the substrate is approximately the same. and / or The spacing between adjacent color filter zones is greater than or equal to 0 μm and less than or equal to 3 μm.

18. A display device, characterized in that, Includes the display panel as described in any one of claims 1-17.

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