Display screen and electronic device

Abstract

Embodiments of the present application provide a display screen and an electronic device. The display screen comprises a substrate, a display element layer and a microlens layer arranged in sequence. The display element layer comprises first sub-pixels and second sub-pixels of different colors. The microlens layer comprises a microlens array, and the microlens array comprises first microlenses and second microlenses of different sizes. The first microlenses correspond to the first sub-pixels, and the second microlenses correspond to the second sub-pixels. Through the first microlenses and the second microlenses, a user can receive a balanced proportion of light emitted by the display screen at different viewing angles.

Description

Technical Field

[0001] This application relates to the field of electronic device hardware, and more specifically, to a display screen and an electronic device. Background Technology

[0002] Organic light-emitting diode (OLED) displays have many advantages, such as being thin and light, having high contrast, high response speed, and being flexible and foldable.

[0003] OLED displays exhibit color shift at different viewing angles. Compared to the primary viewing angle (the angle perpendicular to the screen), the proportion of light received by the user at a wider viewing angle (a larger angle relative to the screen's direction) is unbalanced, resulting in poorer display quality at wider viewing angles and impacting the user experience. Summary of the Invention

[0004] This application provides a display screen and an electronic device. The display screen includes a substrate, a display element layer, and a microlens layer arranged sequentially. The display element layer includes first sub-pixels and second sub-pixels of different colors. The microlens layer includes a microlens array, which includes first microlenses and second microlenses of different sizes. The first microlens corresponds to the first sub-pixel, and the second microlens corresponds to the second sub-pixel. Through the first and second microlenses, the user can receive a balanced proportion of light emitted from the display screen at different viewing angles.

[0005] In a first aspect, a display screen is provided, the display screen comprising: a substrate; a display element layer, the display element layer including a first sub-pixel and a second sub-pixel, the first sub-pixel and the second sub-pixel being sub-pixels of different colors; a microlens layer, the microlens layer including a microlens array, the microlens array including a first microlens and a second microlens, the first microlens and the second microlens having different sizes; wherein the substrate, the display element layer and the microlens layer are stacked sequentially; the projection of the first microlens on the substrate completely covers the projection of the first sub-pixel on the substrate; the projection of the second microlens on the substrate completely covers the projection of the second sub-pixel on the substrate.

[0006] According to an embodiment of this application, the first microlens is located above the first sub-pixel, and the projection of the first microlens on the substrate completely overlaps with the projection of the first sub-pixel on the substrate. Therefore, the first light ray emitted from the first sub-pixel needs to be refracted by the first microlens before transmission. Since the first microlens is different from the second microlens, the first microlens and the second microlens can respectively adjust the proportion of the first light ray emitted from the first sub-pixel and the second light ray emitted from the second sub-pixel in the light received by the user from different viewing angles.

[0007] In conjunction with the first aspect, in some implementations of the first aspect, the first microlens is used to cause a portion of the light rays emitted from the first sub-pixel to diverge, and / or the second microlens is used to cause a portion of the light rays emitted from the second sub-pixel to diverge.

[0008] According to an embodiment of this application, at least one of the first microlens and the second microlens can be used to diverge at least a portion of the light emitted from the corresponding sub-pixel, thereby balancing the proportion of light received by the user at a large viewing angle (a viewing angle at a large angle to the first direction, for example, an angle greater than or equal to 30°, 45°, etc.) and improving the user experience.

[0009] In conjunction with the first aspect, in some implementations of the first aspect, the microlens layer further includes a dielectric layer covering the microlens array, wherein the refractive index of the dielectric layer is less than the refractive index of the microlenses in the microlens array.

[0010] According to the embodiments of this application, when the refractive index of the medium in the dielectric layer is less than the refractive index of the microlenses in the microlens array, at the interface between the microlens and the medium, the light emitted from the sub-pixel at the same incident angle (the incident angle is greater than 0°) can produce a larger emission angle, which makes it easier to adjust the distribution of the light emitted from the sub-pixel at different viewing angles.

[0011] In conjunction with the first aspect, in some implementations of the first aspect, the refractive index of the medium in the medium layer is greater than or equal to 1.4 and less than or equal to 1.6.

[0012] In conjunction with the first aspect, in some implementations of the first aspect, the refractive index of the microlenses in the microlens array is greater than or equal to 1.5 and less than or equal to 1.9.

[0013] According to the embodiments of this application, by adjusting the refractive index of the medium in the medium layer or the refractive index of the microlens in the microlens array, the angle of the light rays emitted from the sub-pixel at the same incident angle (the incident angle is greater than 0°) at the interface between the microlens and the medium can be adjusted.

[0014] In conjunction with the first aspect, in some implementations of the first aspect, the distance D1 between the first sub-pixel and the microlens array in the first direction and the distance L1 between the edge of the first sub-pixel and the edge of the first microlens in the second direction satisfy: D1≥L1×0.25, the first direction is perpendicular to the substrate, the second direction is parallel to the substrate, and / or, the distance D2 between the second sub-pixel and the microlens array in the first direction and the distance L2 between the edge of the second sub-pixel and the edge of the second microlens in the second direction satisfy: D2≥L2×0.25.

[0015] In conjunction with the first aspect, in some implementations of the first aspect, the distance D1 between the first sub-pixel and the microlens array in the first direction and the distance L1 between the edge of the first sub-pixel and the edge of the first microlens in the second direction satisfy: D1≤L1×4, the first direction is perpendicular to the substrate, the second direction is parallel to the substrate, and / or, the distance D2 between the second sub-pixel and the microlens array in the first direction and the distance L2 between the edge of the second sub-pixel and the edge of the second microlens in the second direction satisfy: D2≤L2×4.

[0016] According to the embodiments of this application, when the relative positions of the sub-pixel and the corresponding microlens are within the above-mentioned range, the light emitted from the sub-pixel can have a more flexible adjustment range after being refracted by the corresponding microlens.

[0017] In conjunction with the first aspect, in some implementations of the first aspect, the angle of the bottom angle of the cross section of the first microlens along the first direction is different from the angle of the bottom angle of the cross section of the second microlens along the first direction, wherein the first direction is perpendicular to the substrate.

[0018] In conjunction with the first aspect, in some implementations of the first aspect, the bottom angle of the cross section of the first microlens along the first direction is greater than or equal to 30°, the first direction is perpendicular to the substrate, and / or, the bottom angle of the cross section of the second microlens along the first direction is greater than or equal to 30°.

[0019] In conjunction with the first aspect, in some implementations of the first aspect, the bottom angle of the cross section of the first microlens along the first direction is less than or equal to 85°, the first direction is perpendicular to the substrate, and / or, the bottom angle of the cross section of the second microlens along the first direction is less than or equal to 85°.

[0020] In conjunction with the first aspect, in some implementations of the first aspect, the bottom angle of the cross section of the first microlens along the first direction is greater than or equal to 45° and less than or equal to 75°, the first direction is perpendicular to the substrate, and / or, the bottom angle of the cross section of the second microlens along the first direction is greater than or equal to 45° and less than or equal to 75°.

[0021] According to an embodiment of this application, by adjusting the angle of the bottom angle of the cross section of the microlens along the first direction, the incident angle of the light emitted from the corresponding sub-pixel at the interface between the microlens and the medium can be changed, thereby adjusting the distribution of the light emitted from the sub-pixel at different viewing angles.

[0022] In conjunction with the first aspect, in some implementations of the first aspect, the dimension of the first microlens along the first direction is different from the dimension of the second microlens along the first direction, wherein the first direction is perpendicular to the substrate.

[0023] In conjunction with the first aspect, in some implementations of the first aspect, the size of the first microlens along the first direction is greater than or equal to 1 μm and less than or equal to 10 μm, the first direction is perpendicular to the substrate, and / or, the size of the second microlens along the first direction is greater than or equal to 1 μm and less than or equal to 10 μm.

[0024] In conjunction with the first aspect, in some implementations of the first aspect, the microlens layer has a dimension greater than or equal to 2 μm and less than or equal to 10 μm along a first direction, the first direction being perpendicular to the substrate.

[0025] In conjunction with the first aspect, in some implementations of the first aspect, the distance between the first sub-pixel and / or the second sub-pixel and the microlens array in a first direction is greater than or equal to 2 μm and less than or equal to 15 μm, and the first direction is perpendicular to the substrate.

[0026] According to an embodiment of this application, by adjusting the size of the microlens along the first direction, the proportion of light rays emitted from the corresponding sub-pixel that come into contact with the side of the microlens can be adjusted.

[0027] In conjunction with the first aspect, in some implementations of the first aspect, the distance between the edge of the first sub-pixel and the edge of the first microlens in a second direction is different from the distance between the edge of the second sub-pixel and the edge of the second microlens in a second direction, wherein the second direction is parallel to the substrate.

[0028] In conjunction with the first aspect, in some implementations of the first aspect, the distance between the edge of the first sub-pixel and the edge of the first microlens in the second direction is greater than or equal to 1 μm and less than or equal to 10 μm, the second direction is parallel to the substrate, and / or, the distance between the edge of the second sub-pixel and the edge of the second microlens in the second direction is greater than or equal to 1 μm and less than or equal to 10 μm.

[0029] According to an embodiment of this application, by adjusting the distance between the edge of a sub-pixel and the edge of the corresponding microlens in the second direction, the angle of incidence of the light emitted from the sub-pixel at the interface between the microlens and the medium can be adjusted, thereby adjusting the distribution of the light emitted from the sub-pixel at different viewing angles.

[0030] In conjunction with the first aspect, in some implementations of the first aspect, the display screen further includes an encapsulation layer, wherein the substrate, the display element layer, the encapsulation layer, and the microlens layer are stacked sequentially.

[0031] In conjunction with the first aspect, in some implementations of the first aspect, the display screen further includes a cover plate and a polarizer, wherein the substrate, the display element layer, the microlens layer, the polarizer and the cover plate are stacked sequentially.

[0032] In a second aspect, an electronic device is provided, the electronic device including the display screen described in any of the first aspects.

[0033] In conjunction with the second aspect, in some implementations of the second aspect, the electronic device further includes a circuit board assembly electrically connected to the display screen. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of an electronic device 10 provided in an embodiment of this application.

[0035] Figure 2 This is a schematic diagram of the structure of a display screen 20 provided in an embodiment of this application.

[0036] Figure 3 This is a schematic diagram of the structure of a display layer 23 provided in an embodiment of this application.

[0037] Figure 4 yes Figure 3 The diagram shows a cross-sectional view of the display layer 23 along A-A'.

[0038] Figure 5 yes Figure 3 The diagram shows a cross-sectional view of the display layer 23 along B-B'.

[0039] Figure 6This is a schematic diagram of the optical path of a sub-pixel in the display screen 20 provided in this application embodiment.

[0040] Figure 7 This is a schematic diagram of the structure of a display screen 20 provided in an embodiment of this application.

[0041] Figure 8 This is a schematic diagram of the structure of the first microlens 301 provided in the embodiments of this application.

[0042] Figure 9 yes Figure 7 The diagram shows the optical path of the first sub-pixel 201 and the second sub-pixel 202 in the display screen 20.

[0043] Figure 10 yes Figure 7 The diagram shows the optical path of the first sub-pixel 201 and the second sub-pixel 202 in the display screen 20.

[0044] Figure 11 This is a schematic diagram of another display screen 20 provided in an embodiment of this application.

[0045] Figure 12 This is a schematic diagram of the structure of the first microlens 301 provided in the embodiments of this application.

[0046] Figure 13 This is a top view of a display screen 20 provided in an embodiment of this application.

[0047] Figure 14 This is a top view of a display screen 20 provided in an embodiment of this application. Detailed Implementation

[0048] The embodiments of this application are described in detail below, and examples of these embodiments are illustrated in the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0049] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. In the description of this application, it should be understood that the terms “center,” “longitudinal,” “lateral,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0050] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0051] Figure 1 The diagram shown is a schematic diagram of an electronic device 10 provided in an embodiment of this application.

[0052] Electronic device 10 may include a display screen 20, a housing 30, a battery assembly 40, and a circuit board assembly 50. The display screen 20 is used to implement the display function of electronic device 10, such as displaying images, text, and other information. The circuit board assembly 50 may include one or more electronic components, such as one or more processors, one or more baseband chips, one or more radio frequency chips, or one or more power control chips. The battery assembly 40 may be electrically connected to both the display screen 20 and the circuit board assembly 50, and is used to power both the circuit board assembly 50 and the display screen 20.

[0053] In one embodiment, the display screen 20 may be mounted on the housing 30, and a receiving space 60 may be formed between the display screen 20 and the housing 30, in which the battery assembly 40 and the circuit board assembly 50 of the electronic device 10 may be housed. Exemplarily, the circuit board assembly 50 may be located close to the display screen 20, and the battery assembly 40 may be located on the side of the circuit board assembly 50 away from the display screen 20; or, the battery assembly 40 may be located close to the housing 30, and the circuit board assembly 50 may be located close to the display screen 20.

[0054] Figure 2 This is a schematic diagram of the structure of a display screen 20 provided in an embodiment of this application.

[0055] In one embodiment, the display screen 20 may include a cover layer 21, a polarizing layer 22, and a display layer 23, wherein the cover layer 21, the polarizing layer 22, and the display layer 23 are stacked sequentially, or the polarizing layer 22 is located between the cover layer 21 and the display layer 23.

[0056] In one embodiment, the cover plate 21 can be used to protect the display screen 20 from the influence of the external environment, such as dust, moisture, and physical damage. In one embodiment, in order to improve the display effect of the display screen 20 and reduce the adverse effects of the cover plate 21 on the display effect of the display screen 20, the cover plate 21 is composed of a material with good transparency.

[0057] For example, the cover layer 21 may be composed of chemically strengthened glass or physically strengthened glass to give the cover layer 21 high impact resistance and abrasion resistance. For example, the cover layer 21 may also be composed of a thin film material to make the cover layer 21 flexible or foldable.

[0058] Exemplarily, the cover layer 21 may also include one or more functional coatings, such as an anti-reflective coating, an anti-fingerprint coating, a hardening coating, or an anti-blue light coating. The anti-reflective coating can be used to reduce the reflection of ambient light on the surface of the cover layer 21, thereby improving the visibility of the display screen 20. The anti-fingerprint coating can be used to reduce the accumulation of fingerprints and other stains on the surface of the cover layer 21. The hardening coating can be used to increase the hardness of the surface of the cover layer 21, improving its scratch resistance. The anti-blue light coating can be used to absorb some of the blue light emitted from the display layer 23, thereby reducing the harmful effects of blue light on the eyes.

[0059] In one embodiment, the polarizer (POL) 22 can be used to reduce the reflection of ambient light on the surface of the display screen 20, thereby improving the contrast and readability of the display screen 20 in bright light environments.

[0060] For example, the polarizing layer 22 may be composed of one or more thin film materials. For instance, the polarizing layer 22 may be composed of a polyvinyl alcohol film and / or a polyester film. The polyvinyl alcohol film can be used to adjust the propagation mode of ambient light on the display screen 20, and the polyester film can be used to protect the display screen 20.

[0061] In one embodiment, the display screen 20 can also adopt a polarizer-free structure, that is, the polarizing layer 22 can be replaced by a color filter and a black matrix, thereby forming a color on encapsulation (COE) architecture. The black matrix is ​​disposed between the color filters, and the color filters can correspond to the anode layer in the display layer 23, while the black matrix can correspond to the pixel definition layer in the display layer 23.

[0062] Color filters solve the problems of reflection and light transmission. When external light enters the screen, unwanted light is absorbed by the black matrix, while the remaining light passes through the RGB pixels in the color filter. The RGB pixels then display colors and reflect light. During the reflection process, some light is blocked by the black matrix, while the rest is absorbed by the color filter. Polarizer-free technology can achieve lower screen power consumption at the same display brightness, or higher screen brightness at the same power consumption. Furthermore, since color filters are typically only about 10 micrometers thick, they can significantly reduce screen thickness compared to polarizers, extending the lifespan of foldable screens and reducing the cost of polarizers. In other words, the COE architecture light-gathering solution leads to a decrease in the frontal color gamut, but the COE architecture can improve the color gamut, achieving product goals. Additionally, the COE architecture can convert reflected light incident on the screen into scattered light, thus locking it within the screen and reducing reflectivity.

[0063] In one embodiment, the display screen 20 may further include an adhesive layer 24, which may be located between the polarizing layer 22 and the cover layer 21. The adhesive layer 24 may be used to fix the polarizing layer 22 and the cover layer 21. For example, the side of the adhesive layer 24 facing the cover layer 21 may be bonded to the cover layer 21, and the side of the adhesive layer 24 facing the polarizing layer 22 may be bonded to the polarizing layer 22, thereby fixing the cover layer 21 and the polarizing layer 22 relatively.

[0064] In one embodiment, the display layer 23 can be used to implement the display function of the display screen 20. Exemplarily, the display layer 23 may include a display module and a control module, wherein the display module is used to display images and / or text; the control module is electrically connected to the display module and is used to control the display content and / or display mode of the display module.

[0065] It should be understood that when the display screen 20 is roughly circular, the thickness direction of the display layer 23 can also be understood as the axial direction of the display screen 20 (the direction parallel to the axis OO' in the figure).

[0066] It should also be understood that the display layer 23 may be, for example, a display layer including an organic light-emitting diode (OLED), or a display layer including structures such as quantum dot lighting emission diodes (QLED) and micro light-emitting diodes (micro-LED). The embodiments of this application do not limit this.

[0067] In one embodiment, the display layer 23 may include a substrate 110, a display element layer 200, and an encapsulation layer 130 stacked together, such as Figure 3 As shown.

[0068] The substrate 110 can be a thin-film transistor (TFT) substrate, which may include a base and a TFT disposed on the base. The TFT may include an active layer, a source, a drain, a gate insulating layer, and a gate. The materials of the active layer of the TFT include, but are not limited to, low-temperature polysilicon (LTPS), oxides, amorphous silicon (a-Si), low-temperature polycrystalline oxide (LTPO), and organic materials. The substrate serves as the carrier structure for the display layer 23, and the display element layer 200 and the encapsulation layer 130, etc., can be carried on the substrate.

[0069] In one embodiment, substrate 110 may be a rigid substrate. In another embodiment, substrate 110 may be any one of a glass substrate, a quartz substrate, or a ceramic substrate. For example, a glass substrate may be composed of soda-lime glass and / or borosilicate glass. These types of substrates can have good mechanical strength and good thermal stability.

[0070] In one embodiment, the substrate 110 can be a flexible substrate. In another embodiment, the substrate 110 can be composed of a polymer material, such as one or more of the following: polyimide (PI), polyethylene terephthalate (PET), polycarbonate (PC), polyethylene naphthalate (PEN), or cycloolefin copolymer (COC). These polymer materials can possess good optical and mechanical properties, enabling the substrate to bend and deform, thereby allowing the display layer 23 to meet the requirements of foldable electronic devices (e.g., foldable mobile phones).

[0071] In one embodiment, the substrate 110 may also be composed of the inorganic material constituting the rigid substrate and the polymer material constituting the flexible substrate, and this application does not limit this.

[0072] In one embodiment, the substrate 110 may have a multilayer structure. For example, the substrate 110 may include a first synthetic resin layer, multiple or single inorganic layers, and a second synthetic resin layer disposed on the multiple or single inorganic layers. Each of the first and second synthetic resin layers may contain a polyimide resin.

[0073] In one embodiment, the display layer 23 may further include a planarization layer (PLN) 120.

[0074] The planarization layer 120 is located on the substrate 110, and the planarization layer 120 is mainly used to form a flat surface on the surface of the substrate 110. The materials of the planarization layer 120 include, but are not limited to, organic polymers such as polyimide, siloxane, polyamide, and acrylic.

[0075] The display element layer 200 can be disposed between the planarization layer 120 and the encapsulation layer 130. In one embodiment, the display element layer 200 may include an anode 210, a cathode 220, a common layer 230, and a pixel definition layer (PDL) 240. The anode 210 and the pixel definition layer 240 are located on the side of the PLN 120 away from the substrate 110. The pixel definition layer 240 (also called a pixel defining layer) can be used to define the boundary of each pixel in the display layer 23, reducing the probability of light-emitting materials diffusing into each other in different pixel areas. The common layer 230 can be located on the side of the anode 210 and the pixel definition layer 240 away from the substrate 110. The cathode 220 can be located on the side of the common layer 230 away from the substrate 110.

[0076] In one embodiment, such as Figure 4 As shown, the display layer 23 can be a structure containing a single OLED device, and the common layer 230 can include a first light-emitting stack 231. The first light-emitting stack 231 can include components along the thickness direction of the display layer 23 (i.e., ...). Figure 2 A first hole control layer 2311, a first light-emitting layer 2313, and a first electron control layer 2312 are stacked along the D2 direction. The first hole control layer 2311 may include a first hole injection layer (HIL) and a first hole transport layer (HTL), and the first electron control layer 2312 may include a first electron transport layer (ETL) and a first electron injection layer (EIL). In other words, the common layer 230 may include the first hole injection layer, the first hole transport layer, the first light-emitting layer 2313, the first electron transport layer, and the first electron injection layer stacked along the D2 direction.

[0077] For example, along Figure 3 Analysis along the A-A' direction in the middle can yield the following results: Figure 4The stacked structure shown in the figure may include a substrate 110, a planarization layer 120, an anode 210, a first hole injection layer, a first hole transport layer, a first light-emitting layer 2313, a first electron transport layer, a first electron injection layer, a cathode 220, and an encapsulation layer 130 stacked along the D2 direction.

[0078] The anode 210 can be electrically connected to the drain on the substrate 110 through vias in the planarization layer 120. By applying voltages to the anode 210 and the cathode 220 respectively, holes can be injected from the anode 210 and electrons from the cathode 220, causing the electrons and holes to meet in the first light-emitting layer 2313 to form excitons (electron-hole pairs), thereby exciting the light-emitting layer 2313 to emit light. Simultaneously, by adjusting the voltage input to the anode 210, the display brightness of the display layer 23 can also be adjusted.

[0079] For example, along Figure 3 The B-B' direction analysis in the middle can yield the following results: Figure 5 The stacked structure shown may include a substrate 110, a planarization layer 120, a pixel definition layer 240, a first hole injection layer, a first hole transport layer, a first light-emitting layer 2313, a first electron transport layer, a first electron injection layer, a cathode 220, and an encapsulation layer 130 stacked along the D2 direction.

[0080] The encapsulation layer 130 can be disposed on the side of the display element layer 200 away from the substrate 110. More specifically, the encapsulation layer 130 can be disposed on the side of the cathode 220 away from the substrate 110. The encapsulation layer 130 can employ thin film encapsulation (TFE), which can seal the display element layer 200 to prevent moisture, oxygen, and foreign matter such as dust particles from entering the display element layer 200. The encapsulation layer 130 can have a certain mechanical strength, thereby improving the scratch resistance, abrasion resistance, and other physical properties of the display layer 23 to a certain extent.

[0081] In one embodiment, the encapsulation layer 130 may be composed of inorganic materials such as glass or ceramics, which possess good mechanical properties. In this scenario, the encapsulation layer 130 may also be referred to as a rigid encapsulation layer, and the glass, ceramics, or other materials constituting the encapsulation layer may also be referred to as rigid encapsulation materials. Exemplarily, the rigid encapsulation material may include one or more of the following: inorganic materials, metals, metal oxides, or polymer composite materials, etc.

[0082] In one embodiment, the encapsulation layer 130 may be composed of organic materials such as polymers, which may possess good flexibility and be able to bend and deform under stress without being damaged. In this scenario, the encapsulation layer 130 may also be referred to as a flexible encapsulation layer, and the polymer material constituting the encapsulation layer may also be referred to as a flexible encapsulation material. Exemplarily, the flexible encapsulation material may include one or more of the following: polyimide, polyethylene terephthalate, acrylic resin, or polycarbonate, etc.

[0083] In one embodiment, the encapsulation layer 130 may also be composed of the aforementioned inorganic and organic materials, and this application does not impose any restrictions on this.

[0084] For example, refer to Figure 3 The encapsulation layer 130 may include multiple thin-film encapsulation layers. The encapsulation layer 130 may include a first inorganic encapsulation layer 131, an organic encapsulation layer 132 disposed on the first inorganic encapsulation layer 131, and a second inorganic encapsulation layer 133 disposed on the organic encapsulation layer 132. The first inorganic encapsulation layer 131 and the second inorganic encapsulation layer 133 protect the display element layer 200 from moisture / oxygen, while the organic encapsulation layer 132 protects the display element layer 200 from foreign matter such as dust particles.

[0085] Combination Figure 3 and Figure 4 It can be seen that the display area of ​​the display layer 23 may include multiple sub-pixel areas and non-sub-pixel areas adjacent to the sub-pixel areas, and the non-sub-pixel areas may surround the sub-pixel areas.

[0086] It should be understood that, in the embodiments of this application, a sub-pixel can be understood as a single light-emitting area in the display element layer 200. For example, sub-pixel A and sub-pixel B are different light-emitting areas in the display element layer 200, respectively.

[0087] For example, such as Figure 3 As shown, multiple sub-pixels can include sub-pixel A and sub-pixel B, and the emissive layers in sub-pixels A and B can emit light of different colors or wavelengths. The colors of the light emitted by the multiple sub-pixels can include the three primary colors. For example, sub-pixel A / sub-pixel B can be a red sub-pixel, a green sub-pixel, or a blue sub-pixel. As another example, sub-pixel A / sub-pixel B can be a cyan sub-pixel, a yellow sub-pixel, or a magenta sub-pixel.

[0088] exist Figure 3 In the display shown, the light-emitting layers in sub-pixel A and sub-pixel B can emit light of different wavelengths or colors, and the pixel definition layer 240 can be spaced between pixels of different wavelengths or colors to reduce pixel crosstalk between different pixels.

[0089] Figure 6 This is a schematic diagram of the optical path of a sub-pixel in the display screen 20 provided in this application embodiment.

[0090] like Figure 6 As shown, when sub-pixel A and sub-pixel B are working, compared to the light received by the user at the main viewing angle (e.g., a viewing angle perpendicular to the direction of the display screen, exemplarily, a viewing angle perpendicular to the direction of substrate 110), the proportion of light received by the user at viewing angle 1 (a viewing angle at a large angle to the direction perpendicular to the display screen) and viewing angle 2 (a viewing angle at a large angle to the direction perpendicular to the display screen) is unbalanced, affecting the user experience. This light imbalance can be understood as the ratio of light emitted from sub-pixel A to light emitted from sub-pixel B in the light received by the user at that viewing angle differing from the ratio at the main viewing angle.

[0091] This application provides a display screen and an electronic device. The display screen includes a substrate, a display element layer, and a microlens layer arranged sequentially. The display element layer includes first sub-pixels and second sub-pixels of different colors. The microlens layer includes a microlens array, which includes first microlenses and second microlenses of different sizes. The first microlens corresponds to the first sub-pixel, and the second microlens corresponds to the second sub-pixel. Through the first and second microlenses, the user can receive light emitted from the display screen at different viewing angles without achieving a uniform light ratio.

[0092] Figure 7 This is a schematic diagram of the structure of a display screen 20 provided in an embodiment of this application.

[0093] like Figure 7 As shown, the display screen 20 includes a substrate 110, a display element layer 200, and a microlens layer 300.

[0094] The substrate 110, the display element layer 200, and the microlens layer 300 are stacked sequentially.

[0095] The display element layer 200 includes a first sub-pixel 201 and a second sub-pixel 202. The first sub-pixel 201 and the second sub-pixel 202 are sub-pixels of different colors.

[0096] It should be understood that the fact that the first sub-pixel 201 and the second sub-pixel 202 are sub-pixels of different colors can be interpreted as the light emitted from the first sub-pixel 201 and the second sub-pixel 202 being of different colors. For example, the light emitted from the first sub-pixel 201 is red, and the light emitted from the second sub-pixel 202 is blue.

[0097] The microlens layer 300 includes a microlens array 310. The microlens array 310 includes a first microlens 301 and a second microlens 302. The first microlens 301 and the second microlens 302 have different sizes.

[0098] It should be understood that the difference in size between the first microlens 301 and the second microlens 302 can be understood as at least one of the multiple dimensions of the first microlens 301 and the multiple dimensions of the second microlens 302 being different. For example, the base angle a1 in the cross-section of the first microlens 301 along a first direction and the base angle a2 in the cross-section of the second microlens 302 along the first direction are different. The first direction is a direction perpendicular to the substrate 110, or it can be the thickness direction of the display screen 20, for example, the z-direction. Alternatively, the dimension H1 of the first microlens 301 along the first direction and the dimension H2 of the second microlens 302 along the first direction are different. Alternatively, the dimension of the first microlens 301 along a second direction and the dimension of the second microlens 302 along a second direction are different. The second direction is a direction parallel to the substrate 110, for example, the y-direction. Alternatively, the distance L1 between the edge of the first microlens 301 and the edge of the first sub-pixel 201 in the second direction and the distance L2 between the edge of the second microlens 302 and the edge of the second sub-pixel 202 in the second direction are different.

[0099] In this context, the base angle α1 in the cross-section of the first microlens 301 along the first direction is understood as the angle between any side edge and the base edge in the cross-section. In one embodiment, if the side edge in the cross-section is a broken line, then the base angle α1 can be understood as the angle between the extension of the longest segment of the broken line and the extension of the base edge, such as... Figure 8 As shown. For the sake of brevity, the base angles mentioned in the embodiments of this application can all be understood accordingly, and will not be described in detail again.

[0100] The projection of the first microlens 301 onto the substrate 110 completely covers the projection of the first sub-pixel 201 onto the substrate 110. In one embodiment, the first projection and the second projection completely overlap. The first projection is the projection of the first sub-pixel 201 onto the substrate 110, and the second projection is the projection of the first microlens 301 onto the substrate 110. Furthermore, the area of ​​the first projection is less than or equal to the area of ​​the second projection.

[0101] The projection of the second microlens 302 onto the substrate 110 completely covers the projection of the second sub-pixel 202 onto the substrate 110. In one embodiment, the third and fourth projections completely overlap. The third projection is the projection of the second sub-pixel 202 onto the substrate 110, and the fourth projection is the projection of the second microlens 302 onto the substrate 110. Furthermore, the area of ​​the third projection is less than or equal to the area of ​​the fourth projection.

[0102] According to an embodiment of this application, the first microlens 301 is located above the first sub-pixel 201, and the projection of the first microlens 301 on the substrate 110 completely overlaps with the projection of the first sub-pixel 201 on the substrate 110. Therefore, the first light rays emitted from the first sub-pixel 201 need to be refracted by the first microlens 301 before transmission. Similarly, the second microlens 302 and the second sub-pixel 202 can also be understood accordingly.

[0103] Microlenses can deflect light. For example, light rays emitted from a sub-pixel pass through its corresponding microlens. The angle between the light rays exiting the microlens and the main camera's viewing angle (e.g., a first direction) can change compared to the angle between the light rays incident on the microlens and the main camera's viewing angle (e.g., the first direction). For instance, the angle between the portion of the light rays exiting the microlens and the main camera's viewing angle may be smaller than the angle between the portion of the light rays incident on the microlens and the main camera's viewing angle; in other words, the microlens causes some of the light rays emitted from its corresponding sub-pixel to converge. Conversely, the angle between the portion of the light rays exiting the microlens and the main camera's viewing angle may be larger than the angle between the portion of the light rays incident on the microlens and the main camera's viewing angle; in other words, the microlens causes some of the light rays emitted from its corresponding sub-pixel to diverge.

[0104] In some embodiments, a microlens can converge a portion of the light rays emitted from its corresponding sub-pixel and diverge another portion. This is because different light rays emitted from the sub-pixel can be deflected differently at different positions within the microlens. Specifically, the deflection effect of the microlens on the light rays emitted from its corresponding sub-pixel is related to the shape of the microlens, the dimensions of the microlens at various positions, the refractive index of the microlens, the material of the microlens, the properties of the corresponding sub-pixel, and the relative positional relationship between the microlens and the sub-pixel.

[0105] The deflection effect of a microlens on the light emitted from its corresponding sub-pixel can be determined through experimental testing and simulation. For example, by comparing the visible range of the light emitted from the sub-pixel after passing through the microlens with the visible range of the light emitted from the sub-pixel without passing through the microlens, it can be determined whether the microlens has a converging or diverging effect on the light emitted from the sub-pixel. In one embodiment, such as... Figure 9 As shown, by adjusting the first microlens 301 and the second microlens 302 (e.g., the size of the microlens, or the relative positional relationship between the microlens and the corresponding sub-pixel), at least a portion of the light rays emitted from the first sub-pixel 201 and the second sub-pixel 202 can be converged (converged relative to the main viewing angle, for example, by reducing the angle with the first direction).

[0106] In one embodiment, such as Figure 10As shown, by adjusting the first microlens 301 and the second microlens 302 (e.g., the size of the microlens, or the relative positional relationship between the microlens and the corresponding sub-pixel), at least a portion of the light emitted from the first sub-pixel 201 and the second sub-pixel 202 can be diffused (diffused relative to the main viewing angle, e.g., by increasing the angle with the first direction).

[0107] It should be understood that when a portion of the light rays emitted from a sub-pixel passes perpendicularly through the top surface of the interface between the microlens and the medium (i.e., the light rays enter the medium perpendicularly to the interface), this portion of the light rays does not refract at that interface. Figure 9 and Figure 10 Rays 2, 3, 6 and 7 are shown in the diagram.

[0108] When a portion of the light rays emitted from a sub-pixel passes non-perpendicularly through the top surface of the junction between the microlens and the medium, this portion of the light ray is refracted at that interface, such as... Figure 9 and Figure 10 Light rays 1, 4, 5, and 8 are shown in the diagram. By designing the position, size, and shape of the microlens, the relative positional relationship between the light rays and the normal to the interface can be adjusted, causing some light rays to converge (converge relative to the principal viewpoint, e.g., by decreasing the angle with the first direction) or diverge (diverge relative to the principal viewpoint, e.g., by increasing the angle with the first direction). For example, at the interface, when incident light ray 1 is located on the side of the interface away from the principal viewpoint normal, the refracted (ejected) light ray 1 converges, as shown... Figure 9 As shown. At the interface, when the incident ray 1 is located on the side of the interface with the normal closer to the principal viewing angle, the refracted (outgoing) ray 1 diverges, as... Figure 10 As shown. For the sake of brevity, ray 1 is used as an example for explanation. Similarly, rays 4, 5, and 8 can be understood accordingly. Since the first microlens 301 and the second microlens 302 are different, the first microlens 301 and the second microlens 302 can respectively adjust the proportion of the first ray emitted from the first sub-pixel 201 and the second ray emitted from the second sub-pixel 202 in the light received by the user from different viewing angles.

[0109] It should be noted that the emission positions and angles of the light rays shown in the accompanying drawings are only for illustrative purposes and do not constitute a limitation on this application. In practical applications, sub-pixels can emit various light rays with different emission positions and angles. This application will not elaborate on light rays with other emission positions and angles.

[0110] In one embodiment, the first microlens 301 is used to diverge a portion of the first light rays emitted from the first sub-pixel 201. In one embodiment, the second microlens 302 is used to diverge a portion of the second light rays emitted from the second sub-pixel 202.

[0111] It should be understood that at least one of the first microlens 301 and the second microlens 302 can be used to diverge at least a portion of the light emitted from the corresponding sub-pixel, thereby balancing the proportion of light received by the user at a large viewing angle (a viewing angle at a large angle to the first direction, for example, an angle greater than or equal to 30°, 45°, etc.) and improving the user experience.

[0112] The microlenses described in this embodiment can be used to converge or diverge at least a portion of the light emitted from the corresponding sub-pixel (relative to the main viewing angle), and can be determined according to actual production or design. For example, both the first microlens 301 and the second microlens 302 can diverge at least a portion of the light emitted from the corresponding sub-pixel 201. For the sake of brevity, further details are omitted.

[0113] In one embodiment, by adjusting the ratio of the first light emitted by the first sub-pixel 201 to the second light emitted by the second sub-pixel 202 at different viewing angles, the ratio of the light emitted by the first sub-pixel 201 to the light emitted by the second sub-pixel 202 in the light received by the user at different viewing angles can be made the same, so that the display screen seen by the user at each viewing angle will not have color shift.

[0114] In one embodiment, the microlens layer 300 further includes a dielectric layer 320 covering the microlens array 310. The refractive index of the dielectric in the dielectric layer 320 is less than the refractive index of the microlenses in the microlens array 310.

[0115] It should be understood that when the refractive index of the medium in the dielectric layer 320 is less than the refractive index of the microlenses in the microlens array 310, at the interface between the microlens and the medium, the light emitted from the sub-pixel at the same incident angle (the incident angle is greater than 0°) can produce a larger emission angle, which makes it easier to adjust the distribution of the light emitted from the sub-pixel at different viewing angles.

[0116] In one embodiment, the refractive index of the medium in the dielectric layer 320 is greater than or equal to 1.4 and less than or equal to 1.6. For example, the refractive index of the medium in the dielectric layer 320 may be 1.45, 1.5, or 1.55.

[0117] In one embodiment, the refractive index of the microlenses in the microlens array 310 is greater than or equal to 1.5 and less than or equal to 1.9. For example, the refractive index of the microlenses in the microlens array 310 may be 1.6, 1.7, or 1.8.

[0118] It should be understood that by adjusting the refractive index of the medium in the dielectric layer 320 or the refractive index of the microlenses in the microlens array 310, the angle of the light rays emitted from the sub-pixel at the same incident angle (the angle of incident angle is greater than 0°) at the interface between the microlens and the medium can be adjusted.

[0119] In one embodiment, the distance D1 between the first sub-pixel 201 and the microlens array 310 in the first direction and the distance L1 between the edge of the first sub-pixel 201 and the edge of the first microlens 301 in the second direction satisfy: D1 ≥ L1 × 0.25. In another embodiment, the distance D1 between the first sub-pixel 201 and the microlens array 310 in the first direction and the distance L1 between the edge of the first sub-pixel 201 and the edge of the first microlens 301 in the second direction satisfy: D1 ≥ L1 × 0.5.

[0120] In one embodiment, the distance D1 between the first sub-pixel 201 and the microlens array 310 in the first direction and the distance L1 between the edge of the first sub-pixel 201 and the edge of the first microlens 301 in the second direction satisfy: D1 ≤ L1 × 4. In another embodiment, the distance D1 between the first sub-pixel 201 and the microlens array 310 in the first direction and the distance L1 between the edge of the first sub-pixel 201 and the edge of the first microlens 301 in the second direction satisfy: D1 ≤ L1 × 2.

[0121] It should be understood that the distance between the edge of the first sub-pixel 201 and the edge of the first microlens 301 in the second direction can be understood as the maximum distance between the edge of the first sub-pixel 201 and the edge of the first microlens 301 in the second direction in the cross-section of the display screen 20 along the first direction. Alternatively, the distance between the edge of the first sub-pixel 201 and the edge of the first microlens 301 in the second direction can be understood as the maximum distance between the edge of the first projection and the edge of the second projection in the second direction (e.g., a direction parallel to the substrate and perpendicular to the edge). Similar expressions can be understood in the embodiments of this application, and for the sake of brevity, they will not be repeated one by one.

[0122] In one embodiment, the distance D2 between the second sub-pixel 202 and the microlens array 310 in the first direction and the distance L2 between the edge of the second sub-pixel 202 and the edge of the second microlens 302 in the second direction satisfy: D2 ≥ L2 × 0.25. In another embodiment, the distance D2 between the second sub-pixel 202 and the microlens array 310 in the first direction and the distance L2 between the edge of the second sub-pixel 202 and the edge of the second microlens 302 in the second direction satisfy: D2 ≥ L2 × 0.5.

[0123] In one embodiment, the distance D2 between the second sub-pixel 202 and the microlens array 310 in the first direction and the distance L2 between the edge of the second sub-pixel 202 and the edge of the second microlens 302 in the second direction satisfy: D2 ≤ L2 × 4. In another embodiment, the distance D2 between the second sub-pixel 202 and the microlens array 310 in the first direction and the distance L2 between the edge of the second sub-pixel 202 and the edge of the second microlens 302 in the second direction satisfy: D2 ≤ L2 × 2.

[0124] It should be understood that when the relative positions of the sub-pixel and the corresponding microlens are within the above range, the light emitted from the sub-pixel can have a more flexible adjustment range after being refracted by the corresponding microlens.

[0125] When the positional relationship between the microlens and the corresponding sub-pixel satisfies the above ratio (for example, L1×4≥D1≥L1×0.25, or L2×4≥D2≥L2×0.25), as L increases, more of the light rays emitted by the sub-pixel diverge. As more of the light rays emitted by the sub-pixel diverge, the proportion of light rays emitted by that sub-pixel in the light received by the user at a large viewing angle (a viewing angle at a large angle to the first direction, for example, an angle greater than or equal to 30°, 45°, etc.) increases.

[0126] In one embodiment, the distance between the first sub-pixel 201 and / or the second sub-pixel 202 and the microlens array 310 in the first direction is greater than or equal to 0 μm and less than or equal to 20 μm. For example, the distance between the first sub-pixel 201 and / or the second sub-pixel 202 and the microlens array 310 in the first direction can be 1 μm, 5 μm, 10 μm or 15 μm.

[0127] In one embodiment, the distance between the first sub-pixel 201 and / or the second sub-pixel 202 and the microlens array 310 in the first direction is greater than or equal to 2 μm and less than or equal to 15 μm. For example, the distance between the first sub-pixel 201 and / or the second sub-pixel 202 and the microlens array 310 in the first direction can be 3 μm, 6 μm, 10 μm or 12 μm.

[0128] It should be understood that by adjusting the relative position of the distance between the sub-pixel and the corresponding microlens in the first direction within the above-mentioned range, the light emitted from the sub-pixel can have a more flexible adjustment range after being refracted by the corresponding microlens.

[0129] In one embodiment, the display screen 20 further includes an encapsulation layer 130.

[0130] In one embodiment, the substrate 110, display element layer 200, encapsulation layer 130, and microlens layer 300 are stacked sequentially, such as... Figure 7 As shown.

[0131] In one embodiment, the substrate 110, display element layer 200, microlens layer 300, and encapsulation layer 130 are stacked sequentially, such as... Figure 11 As shown.

[0132] It should be understood that the layering method in the display screen 20 is not limited in the embodiments of this application. For example, the display screen 20 may also include a planarization layer located between the substrate 110 and the display element layer 200. The layering structure of the display screen 20 can be determined according to actual production or design, and for the sake of brevity, it will not be described in detail.

[0133] Meanwhile, the distance between the first sub-pixel 201 and / or the second sub-pixel 202 and the microlens array 310 in the first direction, as described in the above embodiments, can also be understood as the thickness of the layer disposed between the display element layer 200 and the microlens layer 300.

[0134] In one embodiment, the base angle α1 of the cross-section of the first microlens 301 along the first direction is greater than or equal to 30°. In one embodiment, the base angle α1 of the cross-section of the first microlens 301 along the first direction is greater than or equal to 45°. In one embodiment, the base angle α1 of the cross-section of the first microlens 301 along the first direction is less than or equal to 60°. In one embodiment, the base angle α1 of the cross-section of the first microlens 301 along the first direction is less than or equal to 75°. In one embodiment, the base angle α1 of the cross-section of the first microlens 301 along the first direction is less than or equal to 85°.

[0135] In one embodiment, the base angle a1 of the cross-section of the first microlens 301 along the first direction is greater than or equal to 45° and less than or equal to 75°. For example, the base angle a1 of the cross-section of the first microlens 301 along the first direction can be 55°, 60°, 65°, 68°, 70° or 72°.

[0136] In one embodiment, the base angle α2 of the cross-section of the second microlens 302 along the first direction is greater than or equal to 30°. In one embodiment, the base angle α2 of the cross-section of the second microlens 302 along the first direction is greater than or equal to 45°. In one embodiment, the base angle α2 of the cross-section of the second microlens 302 along the first direction is less than or equal to 60°. In one embodiment, the base angle α2 of the cross-section of the second microlens 302 along the first direction is less than or equal to 75°. In one embodiment, the base angle α2 of the cross-section of the second microlens 302 along the first direction is less than or equal to 85°.

[0137] In one embodiment, the base angle a2 of the cross-section of the second microlens 302 along the first direction is greater than or equal to 45° and less than or equal to 75°. For example, the base angle a2 of the cross-section of the second microlens 302 along the first direction can be 55°, 60°, 65°, 68°, 70°, or 72°.

[0138] In one embodiment, the base angle a1 of the cross section of the first microlens 301 along the first direction is different from the base angle a2 of the cross section of the second microlens 302 along the first direction.

[0139] It should be understood that by adjusting the angle of the bottom angle of the cross section of the microlens along the first direction, the incident angle of the light emitted from the corresponding sub-pixel at the interface between the microlens and the medium can be changed, thereby adjusting the distribution of the light emitted from the sub-pixel at different viewing angles.

[0140] In one embodiment, the distance L1 between the edge of the first sub-pixel 201 and the edge of the first microlens 301 in the second direction is greater than or equal to 0 μm and less than or equal to 15 μm. For example, the distance L1 between the edge of the first sub-pixel 201 and the edge of the first microlens 301 in the second direction can be 1 μm, 4 μm, 7 μm, 10 μm or 13 μm.

[0141] In one embodiment, the distance L1 between the edge of the first sub-pixel 201 and the edge of the first microlens 301 in the second direction is greater than or equal to 1 μm and less than or equal to 10 μm. For example, the distance L1 between the edge of the first sub-pixel 201 and the edge of the first microlens 301 in the second direction can be 3 μm, 5 μm, or 8 μm.

[0142] In one embodiment, the distance L2 between the edge of the second sub-pixel 202 and the edge of the second microlens 302 in the second direction is greater than or equal to 0 μm and less than or equal to 15 μm. For example, the distance between the first sub-pixel 201 and / or the second sub-pixel 202 and the microlens array 310 in the first direction can be 1 μm, 4 μm, 7 μm, 10 μm or 13 μm.

[0143] In one embodiment, the distance L2 between the edge of the second sub-pixel 202 and the edge of the second microlens 302 in the second direction is greater than or equal to 1 μm and less than or equal to 10 μm. For example, the distance L2 between the edge of the second sub-pixel 202 and the edge of the second microlens 302 in the second direction can be 3 μm, 5 μm, or 8 μm.

[0144] In one embodiment, the distance L1 between the edge of the first sub-pixel 201 and the edge of the first microlens 301 in the second direction is different from the distance L2 between the edge of the second sub-pixel 202 and the edge of the second microlens 302 in the second direction.

[0145] It should be understood that by adjusting the distance between the edge of the sub-pixel and the edge of the corresponding microlens in the second direction, the angle of incidence of the light emitted from the sub-pixel at the interface between the microlens and the medium can be adjusted, thereby regulating the distribution of the light emitted from the sub-pixel at different viewing angles.

[0146] In one embodiment, the dimension H1 of the first microlens 301 along the first direction (or, it can also be understood as the thickness of the first microlens 301) is greater than or equal to 1 μm and less than or equal to 10 μm. For example, the dimension H1 of the first microlens 301 along the first direction can be 2 μm, 5 μm, or 8 μm.

[0147] In one embodiment, the dimension H1 of the first microlens 301 along the first direction is greater than or equal to 1 μm and less than or equal to 5 μm. For example, the dimension H1 of the first microlens 301 along the first direction can be 2 μm, 3 μm, or 4 μm.

[0148] In one embodiment, the dimension H2 of the second microlens 302 along the first direction (or, it can also be understood as the thickness of the second microlens 302) is greater than or equal to 1 μm and less than or equal to 10 μm. For example, the dimension H2 of the second microlens 302 along the first direction can be 2 μm, 5 μm, or 8 μm.

[0149] In one embodiment, the dimension H2 of the second microlens 302 along the first direction is greater than or equal to 1 μm and less than or equal to 5 μm. For example, the dimension H2 of the second microlens 302 along the first direction can be 2 μm, 3 μm, or 4 μm.

[0150] It should be understood that by adjusting the size of the microlens along the first direction, the proportion of light rays emitted from the corresponding sub-pixel that come into contact with the side of the microlens can be adjusted.

[0151] In one embodiment, the dimension H1 of the first microlens 301 along the first direction is different from the dimension H2 of the second microlens 302 along the first direction.

[0152] It should be understood that the dimension H1 of the first microlens 301 along the first direction and the dimension H2 of the second microlens 302 along the first direction may be the same or different, and the embodiments of this application do not impose any restrictions on this.

[0153] In one embodiment, the dimension H0 of the microlens layer 300 along the first direction is greater than or equal to 2 μm and less than or equal to 10 μm. For example, the dimension H0 of the microlens layer 300 along the first direction can be 3 μm, 5 μm, 7 μm or 9 μm.

[0154] In one embodiment, the dimension H0 of the microlens layer 300 along the first direction is greater than or equal to 3 μm and less than or equal to 8 μm. For example, the dimension H0 of the microlens layer 300 along the first direction can be 4 μm or 6 μm.

[0155] In one embodiment, the cross-section of the first microlens 301 along the first direction can be trapezoidal.

[0156] In one embodiment, the cross-section of the first microlens 301 along the first direction can be a rounded trapezoid, such as... Figure 12 As shown.

[0157] A rounded trapezoid can be understood as a figure enclosed by circular arc segments and straight line segments. The arc ratio *c* in a rounded trapezoid can be understood as the ratio between the dimension *a* of the circular arc portion in the first direction and the dimension *b* of the non-circular arc portion in the first direction. The value of *c* can be greater than or equal to 0 and less than or equal to 100%. The radius *r* of the circular arc can satisfy the following formula:

[0158]

[0159] In one embodiment, the arc radius r is greater than or equal to 0.5 μm. In another embodiment, the arc radius r is less than or equal to 5 μm. For example, the arc radius r can be 1 μm, 2 μm, 3 μm, or 4 μm.

[0160] It should be understood that the proportion of the arc portion in the rounded trapezoid can be adjusted according to actual production or design, and the embodiments of this application do not impose any limitations on this. For the sake of brevity, the second microlens 302 can also be understood accordingly, and will not be described in detail here.

[0161] In one embodiment, the cross-section of the first microlens 301 along the first direction and the cross-section of the second microlens 302 along the first direction may be the same or different.

[0162] It should be understood that the embodiments of this application do not limit the shape of the cross-section of the microlens, and the cross-section can also be other shapes. For example, the cross-section of the first microlens 301 along the first direction can be circular. The cross-sections of the microlenses along the first direction described in the embodiments of this application can all be understood accordingly, and for the sake of brevity, they will not be described in detail.

[0163] In one embodiment, the first projection of the first sub-pixel 201 onto the substrate 110 can be rectangular, such as... Figure 13 As shown. In one embodiment, the first projection of the first sub-pixel 201 onto the substrate 110 can be a rounded rectangle, such as... Figure 14 As shown.

[0164] It should be understood that the embodiments of this application do not limit the shape of the first projection of the first sub-pixel 201 on the substrate 110, and the third projection of the second sub-pixel 202 on the substrate 110 can also be understood accordingly. For the sake of brevity, they will not be described in detail.

[0165] In one embodiment, the second projection of the first microlens 301 onto the substrate 110 can be a regular shape, such as a rounded rectangle, like... Figure 13 As shown. In one embodiment, the second projection of the first microlens 301 onto the substrate 110 can be an irregular shape, such as a petal shape, as shown. Figure 14 As shown.

[0166] It should be understood that the embodiments of this application do not limit the shape of the second projection of the first microlens 301 on the substrate 110, and the fourth projection of the second microlens 302 on the substrate 110 can also be understood accordingly. For the sake of brevity, they will not be described in detail.

[0167] In one embodiment, the display screen 20 further includes a cover plate and a polarizer. The substrate 110, display element layer 200, microlens layer 300, polarizer and cover plate are stacked sequentially.

[0168] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A display screen, characterized in that, The display screen includes: substrate; The display element layer includes a first sub-pixel and a second sub-pixel, wherein the first sub-pixel and the second sub-pixel are sub-pixels of different colors; A microlens layer, the microlens layer comprising a microlens array, the microlens array comprising a first microlens and a second microlens, the first microlens and the second microlens having different sizes; The substrate, the display element layer, and the microlens layer are stacked sequentially. The projection of the first microlens onto the substrate completely covers the projection of the first sub-pixel onto the substrate; The projection of the second microlens onto the substrate completely covers the projection of the second sub-pixel onto the substrate.

2. The display screen according to claim 1, characterized in that, The first microlens is used to diverge a portion of the light rays emitted from the first sub-pixel, and / or the second microlens is used to diverge a portion of the light rays emitted from the second sub-pixel.

3. The display screen according to claim 1 or 2, characterized in that, The microlens layer further includes a dielectric layer covering the microlens array, wherein the refractive index of the dielectric layer is less than the refractive index of the microlenses in the microlens array.

4. The display screen according to claim 3, characterized in that, The refractive index of the medium in the medium layer is greater than or equal to 1.4 and less than or equal to 1.

6.

5. The display screen according to claim 3 or 4, characterized in that, The refractive index of the microlenses in the microlens array is greater than or equal to 1.5 and less than or equal to 1.

9.

6. The display screen according to any one of claims 1 to 4, characterized in that, The distance D1 between the first sub-pixel and the microlens array in the first direction and the distance L1 between the edge of the first sub-pixel and the edge of the first microlens in the second direction satisfy: D1 ≥ L1 × 0.25, the first direction is perpendicular to the substrate, the second direction is parallel to the substrate, and / or, The distance D2 between the second sub-pixel and the microlens array in the first direction and the distance L2 between the edge of the second sub-pixel and the edge of the second microlens in the second direction satisfy: D2≥L2×0.

25.

7. The display screen according to any one of claims 1 to 5, characterized in that, The distance D1 between the first sub-pixel and the microlens array in the first direction and the distance L1 between the edge of the first sub-pixel and the edge of the first microlens in the second direction satisfy: D1 ≤ L1 × 4, the first direction is perpendicular to the substrate, the second direction is parallel to the substrate, and / or, The distance D2 between the second sub-pixel and the microlens array in the first direction and the distance L2 between the edge of the second sub-pixel and the edge of the second microlens in the second direction satisfy: D2≤L2×4.

8. The display screen according to any one of claims 1 to 7, characterized in that, The angle of the bottom angle of the cross section of the first microlens along the first direction is different from the angle of the bottom angle of the cross section of the second microlens along the first direction, and the first direction is perpendicular to the substrate.

9. The display screen according to any one of claims 1 to 8, characterized in that, The angle of the base angle of the cross-section of the first microlens along the first direction is greater than or equal to 30°, the first direction is perpendicular to the substrate, and / or, The bottom angle of the cross section of the second microlens along the first direction is greater than or equal to 30°.

10. The display screen according to any one of claims 1 to 9, characterized in that, The angle of the base angle of the cross-section of the first microlens along the first direction is less than or equal to 85°, the first direction is perpendicular to the substrate, and / or, The bottom angle of the cross section of the second microlens along the first direction is less than or equal to 85°.

11. The display screen according to any one of claims 1 to 10, characterized in that, The bottom angle of the cross-section of the first microlens along the first direction is greater than or equal to 45° and less than or equal to 75°, the first direction is perpendicular to the substrate, and / or, The bottom angle of the cross section of the second microlens along the first direction is greater than or equal to 45° and less than or equal to 75°.

12. The display screen according to any one of claims 1 to 11, characterized in that, The dimensions of the first microlens along the first direction are different from those of the second microlens along the first direction, and the first direction is perpendicular to the substrate.

13. The display screen according to any one of claims 1 to 12, characterized in that, The first microlens has a dimension greater than or equal to 1 μm and less than or equal to 10 μm along a first direction, the first direction being perpendicular to the substrate, and / or... The second microlens has a dimension greater than or equal to 1 μm and less than or equal to 10 μm along the first direction.

14. The display screen according to any one of claims 1 to 13, characterized in that, The microlens layer has a dimension greater than or equal to 2 μm and less than or equal to 10 μm along a first direction, which is perpendicular to the substrate.

15. The display screen according to any one of claims 1 to 14, characterized in that, The distance between the first sub-pixel and / or the second sub-pixel and the microlens array in a first direction is greater than or equal to 2 μm and less than or equal to 15 μm, and the first direction is perpendicular to the substrate.

16. The display screen according to any one of claims 1 to 15, characterized in that, The distance between the edge of the first sub-pixel and the edge of the first microlens in a second direction is different from the distance between the edge of the second sub-pixel and the edge of the second microlens in a second direction, and the second direction is parallel to the substrate.

17. The display screen according to any one of claims 1 to 16, characterized in that, The distance between the edge of the first sub-pixel and the edge of the first microlens in the second direction is greater than or equal to 1 μm and less than or equal to 10 μm, the second direction is parallel to the substrate, and / or, The distance between the edge of the second sub-pixel and the edge of the second microlens in the second direction is greater than or equal to 1 μm and less than or equal to 10 μm.

18. The display screen according to any one of claims 1 to 17, characterized in that, The display screen further includes an encapsulation layer, and the substrate, the display element layer, the encapsulation layer and the microlens layer are stacked in sequence.

19. The display screen according to any one of claims 1 to 18, characterized in that, The display screen also includes a cover plate and a polarizer, and the substrate, the display element layer, the microlens layer, the polarizer and the cover plate are stacked in sequence.

20. An electronic device, characterized in that, The electronic device includes the display screen according to any one of claims 1 to 19.

21. The electronic device according to claim 20, characterized in that, The electronic device also includes a circuit board assembly that is electrically connected to the display screen.

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