Display panel and display device

Abstract

The application provides a display panel and a display device. The display panel comprises a substrate, a light-emitting device layer, a peep-proof structure and a reflection layer. The light-emitting device layer is arranged on one side of the substrate, and the light-emitting device comprises a plurality of light-emitting elements. The peep-proof structure is arranged on the side of the light-emitting device layer away from the substrate, and the peep-proof structure comprises a plurality of spaced light-shielding parts. At least part of the light-shielding parts has a through hole penetrating in the thickness direction, and a light-transmitting part is arranged in the through hole. The reflection layer is arranged on the side of the peep-proof structure facing the light-emitting device layer. The display panel provided by the application is beneficial to improving the brightness and color gamut of the display panel and further improving the display effect of the display panel under the premise of realizing the anti-peep function of the display panel.

Description

Technical Field

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

[0002] Display panels, with their advantages of flatness, low power consumption, no electromagnetic radiation, high resolution, high contrast, easy integration, and lightweight portability, are widely used in electronic devices such as mobile phones, tablets, monitors, and televisions. With the development of display technology, display panels are no longer just carriers of text information; they can now achieve various functions such as location tracking, mobile payment, video chat, and email, providing people with rich personal experiences and communication anytime, anywhere. Consequently, the issue of personal privacy protection has gradually become a rigid demand for consumers, leading to the emergence of anti-peeping display panels.

[0003] In related technologies, numerous new solutions have been proposed to protect privacy, aiming to provide consumers with a better privacy experience. However, in practice, while display panels may meet the anti-peeping function, the display effect is often subpar. Summary of the Invention

[0004] This application provides a display panel and a display device, which can improve the display effect of the display panel while achieving the anti-peeping function of the display panel.

[0005] In a first aspect, the display panel provided according to the embodiments of this application includes a substrate, a light-emitting device layer, a privacy shield structure, and a reflective layer; the light-emitting device layer is disposed on one side of the substrate, and the light-emitting device includes a plurality of light-emitting elements; the privacy shield structure is disposed on the side of the light-emitting device layer away from the substrate, and the privacy shield structure includes a plurality of light-shielding portions and light-transmitting portions disposed at intervals, at least some of the light-shielding portions having through holes disposed along the thickness direction, and the light-transmitting portions being disposed in the through holes; the reflective layer is disposed on the side of the privacy shield structure facing the light-emitting device layer.

[0006] In some embodiments, each light-shielding part is provided with a through hole, and each through hole is provided with a light-transmitting part.

[0007] In some embodiments, the material of the light-transmitting portion includes at least one of tin oxide and zinc oxide.

[0008] In some embodiments, the thickness h of the light-transmitting portion, the distance m between the light-transmitting portion and the light-emitting element along the thickness direction, and the minimum dimension n of the light-emitting element perpendicular to the thickness direction satisfy: 0.58≤(h+m) / n<1.73;

[0009] In some embodiments, 1μm≤h≤3μm.

[0010] In some embodiments, the light-shielding portion has a first surface, a second surface, and a side surface. The first surface is located on the side of the light-shielding portion close to the light-emitting device layer, the second surface is located on the side of the light-shielding portion away from the light-emitting device layer, and the side surface connects the first surface and the second surface. The side surface is inclined outward along the direction away from the substrate.

[0011] In some embodiments, at least a portion of the light-shielding portion's orthogonal projection onto the substrate at least partially overlaps with the orthogonal projection of the light-emitting element onto the substrate.

[0012] In some embodiments, the light-shielding portion is strip-shaped and extends along a first direction, and a plurality of light-shielding portions are spaced apart along a second direction, with the first direction, the second direction, and the thickness direction intersecting each other.

[0013] In some embodiments, the light-shielding part is block-shaped, and multiple light-shielding parts are arranged in an array along a first direction and a second direction, with the first direction, the second direction and the thickness direction intersecting each other.

[0014] In some embodiments, two adjacent rows of light-shielding portions along the second direction are staggered.

[0015] In some embodiments, the privacy structure further includes a transmissive portion disposed between adjacent light-blocking portions, the transmissive portion being configured to enhance the brightness of the light emitted by the light-emitting element and illuminate it.

[0016] In some embodiments, at least a portion of the transmissive portion is projected onto the substrate in the orthogonal projection of the light-emitting element onto the substrate.

[0017] In some embodiments, the transmission section includes a transmission grating.

[0018] In some embodiments, the transmission grating includes a grating portion and a gap portion, the gap portion being located between two adjacent grating portions, and the material of the grating portion including at least one of silver and aluminum.

[0019] In some embodiments, the transmission grating includes a plurality of grating portions, which are arranged in an array along a first direction and a second direction, wherein the first direction intersects the second direction.

[0020] In some embodiments, the grating portions extend along a first direction and are arranged along a second direction, wherein the first and second directions intersect.

[0021] In some embodiments, along the second direction, the size e of the grating portion and the size p of the gap portion satisfy: 0.3 < e / p < 0.5.

[0022] In some embodiments, 90nm ≤ e ≤ 110nm.

[0023] In some embodiments, 100nm ≤ p ≤ 400nm.

[0024] In some embodiments, the display panel further includes a planarization layer that fills the space between the light-shielding portions and is disposed on the side of the privacy structure opposite to the display panel.

[0025] In some embodiments, the light transmittance T of the planarization layer satisfies: 60% ≤ T ≤ 90%.

[0026] Secondly, embodiments of this application provide a display device, including the display panel provided in any of the above embodiments.

[0027] The display panel and display device provided in this application embodiment have a plurality of light-shielding portions spaced apart on the side of the light-emitting device layer away from the substrate, and at least some of the light-shielding portions have through holes extending along the thickness direction. Light-transmitting portions are disposed in the through holes, and the light-transmitting portions enable a portion of the light emitted by the light-emitting element to be refracted and emitted through the light-transmitting portions, and another portion to be emitted after being reflected by the light-transmitting portions. In this way, while realizing the anti-peeping function of the display panel, it is beneficial to improve the brightness and color gamut of the display panel, thereby improving the display effect of the display panel. Attached Figure Description

[0028] The features, advantages, and technical effects of exemplary embodiments of the present application will now be described with reference to the accompanying drawings. In the drawings, the same parts are referred to by the same reference numerals. The drawings are not drawn to scale.

[0029] Figure 1 A front view of a display panel provided in an embodiment of this application;

[0030] Figure 2 for Figure 1 A schematic diagram of a cross-sectional structure along AA;

[0031] Figure 3 for Figure 1 Another sectional view of the structure along AA;

[0032] Figure 4 for Figure 1 Another sectional view of the structure along AA;

[0033] Figure 5 A top view of a portion of the structure in a display panel provided in an embodiment of this application;

[0034] Figure 6 Another top view schematic diagram of a portion of the structure in the display panel provided in an embodiment of this application;

[0035] Figure 7 Another top view schematic diagram of a portion of the structure in the display panel provided in the embodiments of this application;

[0036] Figure 8A front view of a display device provided in an embodiment of this application.

[0037] The accompanying drawings are not necessarily drawn to scale.

[0038] Explanation of reference numerals in the attached figures:

[0039] 100. Display panel;

[0040] 110. Substrate;

[0041] 120. Light-emitting device layer; 121. Light-emitting element;

[0042] 130. Privacy protection structure; 131. Light-blocking part; 131a. Through hole; 1311. First surface; 1312. Second surface; 1313. Side surface; 132. Light-transmitting part;

[0043] 140. Reflective layer;

[0044] 150. Transmitting section; 151. Grating; 1511. Grating section; 1512. Gap section;

[0045] 160. Planarization layer;

[0046] 170. Encapsulation layer;

[0047] 180. Cover plate;

[0048] 10. Display device;

[0049] X, the first direction; Y, the second direction. Detailed Implementation

[0050] The features and exemplary embodiments of various aspects of this application will now be described in detail. Numerous specific details are set forth in the following detailed description to provide a comprehensive understanding of this application. However, it will be apparent to those skilled in the art that this application can be implemented without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of this application by illustrating examples. In the accompanying drawings and the following description, at least some well-known structures and techniques are not shown to avoid unnecessarily obscuring the application; and, for clarity, the dimensions of some structures may be exaggerated. Furthermore, the features, structures, or characteristics described below can be combined in any suitable manner in one or more embodiments.

[0051] Furthermore, for the sake of understanding and ease of description, the dimensions and thicknesses of each configuration shown in the figures are arbitrarily illustrated, but the concept of this application is not limited thereto. In the figures, the thicknesses of layers, films, panels, and regions, etc., are enlarged for clarity. In the figures, the thicknesses of some layers and regions are enlarged for better understanding and ease of description.

[0052] It is understandable that when an element such as a layer, film, region, or substrate is described as being "on" another element, the element may be directly on that other element, or there may be intermediate elements present. In contrast, when an element is described as being "directly on" another element, there are no intermediate elements present. Furthermore, throughout the specification, the phrase "on" the target element indicates that it is positioned above or below the target element and does not necessarily indicate that it is positioned "on the upper side" based on the direction of gravity.

[0053] Furthermore, unless explicitly stated otherwise, the word "including" will be understood to include the stated elements but not exclude any other elements.

[0054] Display panels are widely used in electronic devices such as mobile phones and tablets. In order to achieve the privacy protection function of display panels, such as OLED (Organic Light Emitting Diode) display panels, a privacy protection structure is usually set on the side of the light-emitting device layer facing the light-emitting surface of the display panel to block the emission of light emitted from the light-emitting device layer at a large angle, thereby achieving the privacy protection function of the display panel. However, while achieving the privacy protection function, the privacy protection structure will also block the normal emission of some light at a small angle, thereby reducing the brightness of the display panel. As a result, although the display panel achieves the privacy protection function, the display effect is not good.

[0055] In view of the above, this application provides a display panel and a display device. The following will describe various embodiments of the display panel and the display device with reference to the accompanying drawings.

[0056] like Figure 1 and Figure 2 As shown, the display panel 100 provided according to an embodiment of this application includes a substrate 110, a light-emitting device layer 120, a privacy structure 130, and a reflective layer 140. The light-emitting device layer 120 is disposed on one side of the substrate 110, and the light-emitting device includes a plurality of light-emitting elements 121. The privacy structure 130 is disposed on the side of the light-emitting device layer 120 facing away from the substrate 110. The privacy structure 130 includes a plurality of spaced-apart light-shielding portions 131 and light-transmitting portions 132. At least a portion of the light-shielding portions 131 has a through-hole 131a extending along the thickness direction, and the light-transmitting portions 132 are disposed in the through-hole 131a. The reflective layer 140 is disposed on the side of the privacy structure 130 facing the light-emitting device layer 120. Specifically, the reflective layer 140 may be disposed on the side of the light-emitting functional layer of the light-emitting elements 121 facing away from the privacy structure 130; it may also be an electrode with a reflective function.

[0057] The substrate 110 may include insulating materials such as PI (Polyimide). The substrate 110 may also include a pixel driving circuit, which is electrically connected to the light-emitting element 121 of the light-emitting device layer 120 to drive the light-emitting element 121 to emit light.

[0058] The light-emitting device layer 120 includes a plurality of spaced light-emitting elements 121. The light-emitting elements 121 of the light-emitting device layer 120 can be arranged in an array and emit red light, green light or blue light, etc.

[0059] The privacy structure 130 includes a plurality of spaced-apart light-shielding portions 131. The light-shielding portions 131 may be located on the side of the light-emitting element 121 away from the substrate 110, that is, the orthographic projection of the light-shielding portion 131 on the substrate 110 at least partially overlaps with the orthographic projection of the light-emitting element 121 on the substrate 110. Alternatively, the orthographic projection of the light-shielding portion 131 on the substrate 110 may be offset from the orthographic projection of the light-emitting element 121 on the substrate 110.

[0060] Multiple light-shielding parts 131 can be arranged in an array. The material of the light-shielding parts 131 can include black foam. The light-shielding parts 131 can block at least part of the light emitted by the light-emitting element 121 at a large angle, so as to block the light emitted by the light-emitting element 121 of the display panel 100 at a large angle, making it difficult for people to distinguish the image displayed on the display panel 100 at a large viewing angle, thereby realizing the anti-peeping function of the display panel 100.

[0061] At least a portion of the light-shielding part 131 has a through hole 131a that extends through the thickness direction, and the light-transmitting part 132 is disposed within the through hole 131a. Thus, a portion of a plurality of light-shielding parts 131 may have a through hole 131a and the light-transmitting part 132 may be disposed within the through hole 131a. Alternatively, each light-shielding part 131 may have a through hole 131a and the light-transmitting part 132 may be disposed within the through hole 131a of each light-shielding part 131.

[0062] When light emitted from the light-emitting element 121 is incident on the light-transmitting portion 132, part of the incident light is refracted by the light-transmitting portion 132 and then emitted, while the other part is reflected by the light-transmitting portion 132 and then directed towards the reflective layer 140. The light is repeatedly reflected between the reflective layer 140 and the light-transmitting portion 132, and finally emitted after refraction by the light-transmitting portion 132. The light-transmitting portion 132 can be made of a transparent or translucent material.

[0063] The reflective layer 140 can be a separately formed film layer, so that the light emitted from the light-emitting element 121 is repeatedly reflected between the reflective layer 140 and the light-transmitting part 132 before finally exiting through the light-transmitting part 132. Alternatively, a related functional film layer in the display panel 100 can be used as the reflective layer 140, such as the metal traces in the substrate 110 of the display panel 100. Or, the reflective layer 140 can also be a cathode or anode structure corresponding to the light-emitting element 121, as long as it can reflect the incident light incident on the reflective layer 140.

[0064] Optionally, a light-transmitting part 132 can be provided within a through hole 131a, and the light-transmitting part 132 fills the through hole 131a. Alternatively, multiple light-transmitting parts 132 can be provided at intervals within a through hole 131a. The selection can be made according to actual needs, and there is no limitation here.

[0065] In this way, when the light emitted from the light-emitting element 121 at a smaller angle shines on the through hole 131a of the light-shielding part 131, it can be refracted by the light-transmitting part 132 and emitted at a smaller angle. Meanwhile, when the light emitted from the light-emitting element 121 at a larger angle shines on the through hole 131a of the light-shielding part 131, it will be repeatedly reflected between the light-transmitting part 132 and the reflective layer 140, and finally shines on the light-transmitting part 132 at a smaller angle and is emitted. In this way, while realizing the anti-peeping function of the display panel 100, it is beneficial to improve the display brightness of the light-emitting element 121, thereby improving the display brightness of the display panel 100.

[0066] In addition, when light emanating from the light-emitting element 121 is directed towards the light-transmitting portion 132 at a large angle, it will be repeatedly reflected between the reflective layer 140 and the light-transmitting portion 132. This is beneficial to enhancing the microcavity adjustment effect of the light emitted by the light-emitting element 121, increasing the purity of the light emitted by the light-emitting element 121, and improving the overall color gamut of the display panel 100. This makes the colors displayed by the display panel 100 more vivid. The wide color gamut display of the display panel 100 can give outdoor CGM dynamic color gamut control greater flexibility, that is, show a better display effect.

[0067] The display panel 100 provided in this application embodiment has a plurality of light-shielding portions 131 spaced apart on the side of the light-emitting device layer 120 away from the substrate 110, and at least some of the light-shielding portions 131 have through holes 131a extending along the thickness direction. A light-transmitting portion 132 is disposed in the through hole 131a, and a reflective layer 140 is disposed on the side of the privacy structure 130 facing the light-emitting device layer 120 (the reflective layer 140 may specifically be disposed on the side of the light-emitting functional layer of the light-emitting element 121 away from the privacy structure 130; or it may be an electrode with a reflective function). Thus, a portion of the light emitted by the light-emitting element 121 is emitted through the light-transmitting portion 132, and another portion is emitted through the light-transmitting portion 132 after repeated reflection by the light-transmitting portion 132 and the reflective layer 140. In this way, while realizing the privacy function of the display panel 100, it is beneficial to improve the brightness and color gamut of the display panel 100, thereby improving the display effect of the display panel 100.

[0068] In some embodiments, each light-shielding part 131 is provided with a through hole 131a, and each through hole 131a is provided with a light-transmitting part 132.

[0069] In this way, the light emitted by the light-emitting element 121 can be emitted directly through the through hole 131a of any one or more light-shielding parts 131, or emitted after repeated reflection by the light-shielding part 131 and the reflective layer 140, which is beneficial to further improve the brightness and color gamut of the display panel 100 and further improve the display effect of the display panel 100.

[0070] In some embodiments, the material of the light-transmitting portion 132 includes at least one of tin oxide and zinc oxide.

[0071] Both tin oxide and zinc oxide have excellent transmissivity and reflectivity, and also have a good microcavity effect, which is beneficial to further increase the brightness and color gamut of the display panel 100 and improve the display effect of the display panel 100.

[0072] like Figure 1 and Figure 2 As shown, in some embodiments, the thickness h of the light-transmitting portion 132, the distance m between the light-transmitting portion 132 and the light-emitting element 121 along the thickness direction, and the minimum dimension n of the light-emitting element 121 along the thickness direction satisfy: 0.58≤(h+m) / n<1.73.

[0073] For example, (h+m) / n can be 0.58, 0.6, 0.8, 0.9, 1, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6 or 1.7, etc.

[0074] After systematic analysis and long-term practice, the inventors discovered that when 0.58≤(h+m) / n<1, the viewing angle of the display panel 100 has a good anti-peeping effect within the range of 45℃~60℃; while when 1≤(h+m) / n<1.73, the viewing angle of the display panel 100 has a good anti-peeping effect within the range of 45℃~30℃.

[0075] Therefore, as needed, 0.58≤(h+m) / n<1.73 can be set, and the specific value of (h+m) / n can be set to meet the anti-peeping function under the corresponding viewpoint.

[0076] In some embodiments, 1μm≤h≤3μm.

[0077] For example, h can be 1μm, 1.5μm, 2μm, 2.5μm or 3μm, etc.

[0078] After systematic analysis and long-term practice, the inventors discovered that setting the thickness h of the light-transmitting part 132 to satisfy: 1μm≤h≤3μm is beneficial to reduce the thickness of the display panel 100 as much as possible while ensuring the transmission function and microcavity effect of the light-transmitting part 132.

[0079] like Figure 1 and Figure 3 As shown, in some embodiments, the light-shielding portion 131 has a first surface 1311, a second surface 1312, and a side surface 1313. The first surface 1311 is located on the side of the light-shielding portion 131 close to the light-emitting device layer 120, the second surface 1312 is located on the side of the light-shielding portion 131 away from the light-emitting device layer 120, and the side surface 1313 connects the first surface 1311 and the second surface 1312. The side surface 1313 is inclined outward along the direction away from the substrate 110.

[0080] In this way, the side surface 1313 can block more of the large-angle emitted light from the light-emitting element 121, thus providing a better anti-peeping effect.

[0081] like Figure 1 and Figure 2 As shown, in some embodiments, at least a portion of the light-shielding portion 131 on the substrate 110 and at least a portion of the light-emitting element 121 on the substrate 110 overlap.

[0082] Optionally, the orthographic projection of the light-shielding portion 131 onto the substrate 110 may be located within the orthographic projection of the light-emitting element 121 onto the substrate 110, or the orthographic projection of the light-shielding portion 131 onto the substrate 110 may overlap with the orthographic projection of the light-emitting element 121 onto the substrate 110. Thus, by providing the light-shielding portion 131 on a portion of the side of the light-emitting element 121 facing away from the substrate 110, the anti-peeping effect of the display panel 100 is further improved.

[0083] like Figure 5 As shown, in some embodiments, the light-shielding portion 131 is strip-shaped and extends along the first direction X, and a plurality of light-shielding portions 131 are spaced apart along the second direction Y, with the first direction X, the second direction Y and the thickness direction intersecting in pairs.

[0084] The light-shielding part 131 is strip-shaped and extends along the first direction X. The light-shielding part 131 can block the large-angle light emitted by the light-emitting element 121 from being emitted to the side of the light-shielding part 131 along the second direction Y, thus having a better privacy protection effect.

[0085] like Figure 6 As shown, in some embodiments, the light-shielding part 131 is block-shaped, and multiple light-shielding parts 131 are arranged in an array along the first direction X and the second direction Y, with the first direction X, the second direction Y and the thickness direction intersecting each other.

[0086] The light-shielding part 131 is block-shaped and is spaced apart along the first direction X and the second direction Y. While playing a role in preventing peeping, it helps to reduce the blocking effect of the light-shielding part 131 on the light emitted by the light-emitting element 121, which helps to improve the light-emitting brightness of the light-emitting element 121, thereby improving the display effect and efficiency of the display panel 100.

[0087] like Figure 7 As shown, in some embodiments, two adjacent rows of light-shielding portions 131 along the second direction Y are staggered.

[0088] If two adjacent rows of light-shielding parts 131 are staggered along the second direction Y, then at least a portion of the projection of any light-shielding part 131 in any row along the second direction Y is located between two light-shielding parts 131 in the adjacent other row.

[0089] In this way, the projection of multiple light-shielding parts 131 along the second direction Y can block most of the large-angle light emission of the light-emitting element 121 along the side of the second direction Y, which is beneficial to further improve the privacy effect of the display panel 100 while improving the light emission efficiency of the light-emitting element 121.

[0090] like Figure 1 and Figure 4 As shown, in some embodiments, the privacy structure 130 further includes a transmission portion 150, which is disposed between adjacent light-shielding portions 131. The transmission portion 150 is configured to enhance the brightness of the light emitted by the light-emitting element 121 and illuminate it.

[0091] The transmissive portion 150 has the function of enhancing light. For example, the transmissive portion 150 may include a transmissive grating 151, etc. By providing the transmissive portion 150 between two adjacent light-shielding portions 131, it is beneficial to further improve the brightness of the display panel 100, thereby improving the display effect. In particular, when the orthographic projection of the light-shielding portion 131 on the substrate 110 at least partially overlaps with the orthographic projection of the light-emitting element 121 on the substrate 110, the transmissive portion 150 can compensate for the brightness loss of the display panel 100 due to the provision of the light-shielding portion 131. This is beneficial to improve the display brightness of the display panel 100 while improving the anti-peeping ability, thereby improving the display effect.

[0092] like Figure 1 and Figure 4 As shown, in some embodiments, at least a portion of the transmissive portion 150 is located within the orthogonal projection of the light-emitting element 121 onto the orthogonal projection of the substrate 110.

[0093] In this way, the light emitted by the light-emitting element 121 corresponding to the transmissive portion 150 can illuminate the corresponding transmissive portion 150 more, thereby greatly enhancing the brightness of the light emitted by the light-emitting element 121, which is beneficial to improving the light emission efficiency and brightness of the display panel 100.

[0094] Please continue reading. Figure 1 and Figure 4 In some embodiments, the transmission section 150 includes a transmission grating 151.

[0095] The transmission grating 151 can be formed by engraving a transmissive material into a grating structure, which can transmit light emitted by the light-emitting element 121.

[0096] According to the gap surface plasma effect, after the light emitted by the light-emitting element 121 shines on the transmission grating 151, part of it will be emitted directly, and the other part will be repeatedly excited on the transmission grating 151 and resonate with the transmission grating 151 to generate stronger illumination. This is beneficial to further improve the light emission efficiency and brightness of the display panel 100.

[0097] Please continue reading. Figure 1 and Figure 4 In some embodiments, the transmission grating 151 includes a grating portion 1511 and a gap portion 1512, the gap portion 1512 being located between two adjacent grating portions 1511. The material of the grating portion 1511 includes at least one of silver and aluminum. The gap portion 1512 may be formed by filling the spaces between the grating portions 1511 with relevant material during the fabrication of adjacent film layers of the transmission grating 151 after the grating portions 1511 have been fabricated.

[0098] Both silver and aluminum have low ion loss. During the process of the light emitted by the light-emitting element 121 resonating with the grating section 1511, the material loss of the grating section 1511 is small, which is beneficial to improving the structural stability of the transmission section 150 and thus improving the display stability of the display panel 100.

[0099] Optionally, the grating portion 1511 may be strip-shaped and spaced apart in one direction, or the transmission grating 151 may be block-shaped and spaced apart in two directions.

[0100] like Figure 5 As shown, in some embodiments, the transmission grating 151 includes a plurality of grating portions 1511, which are arranged in an array along a first direction X and a second direction Y, wherein the first direction X intersects the second direction Y.

[0101] If multiple grating sections 1511 are arranged in an array along the first direction X and the second direction Y, the multiple grating sections 1511 can be arranged in a rectangular array, in which case the second direction Y can be perpendicular to each other; or, the multiple grating sections 1511 can be arranged in a circular array, in which case one of the first direction X and the second direction Y is arranged along the circumference of the circle, and the other is arranged along the radial direction of the circle.

[0102] The arrangement of multiple grating sections 1511 along the first direction X and the second direction Y is beneficial to increase the intensity of the excitation and vibration between the light emitted by the light-emitting element 121 and the grating section 1511, which is conducive to exciting stronger illumination and further improving the light emission efficiency and brightness of the display panel 100.

[0103] like Figure 6 As shown, in some embodiments, the grating portion 1511 extends along a first direction X and is arranged along a second direction Y, wherein the first direction X and the second direction Y intersect.

[0104] Thus, the grating portion 1511 can be elongated and extend along the first direction X, and a plurality of grating portions 1511 are spaced apart along the second direction Y. If the first direction X and the second direction Y intersect, then, for example, the first direction X and the second direction Y are perpendicular.

[0105] The grating section 1511 extends along the first direction X and is arranged along the second direction Y, which is beneficial for the light emitted by the light-emitting element 121 to excite stronger illumination in the grating section 1511, thereby improving the light emission efficiency and brightness of the display panel 100.

[0106] like Figure 5 and Figure 6 As shown, in some embodiments, along a direction parallel to the substrate 110, the dimension e of the grating portion 1511 and the dimension p of the gap portion 1512 satisfy: 0.3 < e / p < 0.5.

[0107] Optionally, e / p can be 0.35, 0.4, 0.45, or 0.48, etc.

[0108] Through systematic analysis and long-term practice, the inventors discovered that setting 0.3 < e / p < 0.5 improves the light emission efficiency and brightness of the display panel 100 while having almost no impact on the color of the display panel 100, which helps maintain a good display effect of the display panel 100.

[0109] In some embodiments, 90nm ≤ e ≤ 110nm.

[0110] For example, e can be 90nm, 95nm, 100nm, 105nm, or 110nm, etc.

[0111] After systematic analysis and long-term practice, the inventors discovered that setting 90nm≤e≤110nm is beneficial to greatly improve the excitation of the grating section 1511 by the light emitted by the light-emitting element 121, thereby improving the light emission efficiency and brightness of the display panel 100.

[0112] Please continue reading. Figure 5 and Figure 6 In some embodiments, along the second direction Y, the size p of the gap 1512 satisfies: 100nm≤p≤400nm.

[0113] The dimension p of the gap 1512 is the distance between two adjacent grating sections 1511.

[0114] Optionally, p can be 100nm, 150nm, 200nm, 250nm, 300nm, 350nm, or 400nm, etc.

[0115] After systematic analysis and long-term practice, the inventors discovered that setting 100nm≤p≤400nm is beneficial to greatly improve the excitation of the grating section 1511 by the light emitted by the light-emitting element 121, thereby improving the light emission efficiency and brightness of the display panel 100.

[0116] like Figure 1 and Figure 2 As shown, in some embodiments, the display panel 100 further includes a planarization layer 160, which fills the space between the light-shielding portions 131 and is disposed on the side of the privacy structure 130 away from the display panel 100.

[0117] Thus, after the privacy screen structure 130 and the light-transmitting portion 132 are both prepared, a planarization layer 160 can be formed by deposition or other processes to fill the gaps between the light-shielding portions 131. In embodiments where the display panel 100 also includes a transmissive portion 150, the planarization layer 160 can be prepared after the transmissive portion 150 is prepared, so that the planarization layer 160 fills the gap portion 1512 corresponding to the transmissive portion 150 and the space between the transmissive portion 150 and the light-shielding portion 131.

[0118] By setting a planarization layer 160 and filling the space between the light-shielding portions 131, and placing the privacy structure 130 on the side away from the display panel 100, it is beneficial to improve the structural stability of the privacy structure 130 and the light-transmitting portion 132. Furthermore, the encapsulation layer 170 can block the intrusion of impurities such as water and oxygen, which is beneficial to reduce external corrosion of the light-shielding portion 131 and the light-transmitting portion 132, and ensure the structural stability of the light-shielding portion 131 and the light-transmitting portion 132.

[0119] In some embodiments, the light transmittance T of the planarization layer 160 satisfies: 60% ≤ T ≤ 90%.

[0120] Optionally, the light transmittance T of the planarization layer 160 can be 60%, 65%, 70%, 75%, 80%, 85%, or 90%, etc. Optionally, the planarization layer 160 can be made of gray organic adhesive.

[0121] Through systematic analysis and long-term practice, the inventors discovered that setting the light transmittance T of the planarization layer 160 to satisfy 60% ≤ T ≤ 90% further reduces the reflectivity of the display panel 100, thus improving its display effect. Furthermore, the presence of the light-transmitting portion 132 increases the display brightness of the display panel 100, compensating for the reduced light transmittance of the planarization layer 160 and its impact on the brightness. Therefore, by setting the light-transmitting portion 132 and ensuring the light transmittance T of the planarization layer 160 satisfies 60% ≤ T ≤ 90%, the reflectivity of the display panel 100 can be reduced, while its brightness and color gamut can be improved, further enhancing its display effect.

[0122] Please continue reading. Figure 1 and Figure 2 In some embodiments, the display panel 100 further includes an encapsulation layer 170 disposed on the light-emitting device layer 120, and a privacy shield 130 disposed on the side of the encapsulation layer 170 opposite to the display device layer.

[0123] The encapsulation layer 170 can prevent external water, oxygen, etc. from entering the interior of the light-emitting device layer 120 and corroding the light-emitting element 121.

[0124] Please continue reading. Figure 1and Figure 2 In some embodiments, the display panel 100 further includes a cover plate 180 disposed on the side of the planarization layer 160 opposite to the privacy structure 130.

[0125] like Figure 8 As shown, the display device 10 provided according to the embodiments of this application includes the display panel 100 provided in any of the above embodiments.

[0126] The display device 10 in this application embodiment includes, but is not limited to, mobile phones, personal digital assistants (PDAs), tablet computers, e-books, televisions, access control systems, smart landline phones, control consoles, and other devices with display functions.

[0127] The display device 10 provided in this application embodiment has the same technical effect as the display panel 100 provided in any of the above embodiments, and will not be described again here.

[0128] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A display panel, characterized in that, The display panel includes: substrate; A light-emitting device layer is disposed on one side of the substrate, and the light-emitting device includes a plurality of light-emitting elements; A privacy screen structure is provided on the side of the light-emitting device layer facing away from the substrate. The privacy screen structure includes a light-transmitting part and a plurality of light-shielding parts spaced apart. At least a portion of the light-shielding parts has a through hole that extends through the thickness direction. The light-transmitting part is provided in the through hole. The orthographic projection of the light-shielding part on the substrate overlaps with the orthographic projection of the light-emitting element on the substrate. The light-transmitting part has a semi-transparent and semi-reflective function. A reflective layer is disposed on the side of the privacy structure facing the light-emitting device layer; Wherein, the orthographic projection of the light-transmitting part on the substrate overlaps with the orthographic projection of the reflective layer on the substrate. The light-transmitting part and the reflective layer cooperate so that a portion of the light emitted by the light-emitting element is refracted by the light-transmitting part and then emitted, while another portion of the light is reflected by the light-transmitting part and then emitted towards the reflective layer. The light is then repeatedly reflected between the reflective layer and the light-transmitting part and then refracted by the light-transmitting part before being emitted. The thickness h of the light-transmitting part, the distance m between the light-transmitting part and the light-emitting element along the thickness direction, and the minimum dimension n of the light-emitting element perpendicular to the thickness direction satisfy: 0.58≤(h+m) / n<1.

73.

2. The display panel according to claim 1, characterized in that, Each of the light-shielding portions is provided with a through hole, and each of the through holes is provided with a light-transmitting portion.

3. The display panel according to claim 2, characterized in that, The material of the light-transmitting part includes at least one of indium tin oxide and indium zinc oxide.

4. The display panel according to claim 1, characterized in that, 1μm≤h≤3μm.

5. The display panel according to claim 1, characterized in that, The light-shielding portion has a first surface, a second surface, and a side surface. The first surface is located on the side of the light-shielding portion close to the light-emitting device layer, the second surface is located on the side of the light-shielding portion away from the light-emitting device layer, and the side surface connects the first surface and the second surface. The side surface is inclined outward in a direction away from the substrate.

6. The display panel according to claim 5, characterized in that, At least a portion of the light-shielding portion's orthogonal projection onto the substrate overlaps at least partially with the orthogonal projection of the light-emitting element onto the substrate.

7. The display panel according to claim 1, characterized in that, The light-shielding part is strip-shaped and extends along a first direction. A plurality of light-shielding parts are spaced apart along a second direction. The first direction, the second direction, and the thickness direction intersect each other. or, The light-shielding part is block-shaped, and multiple light-shielding parts are arranged in an array along a first direction and a second direction, with the first direction, the second direction and the thickness direction intersecting each other.

8. The display panel according to claim 7, characterized in that, The two adjacent rows of light-shielding portions along the second direction are staggered.

9. The display panel according to any one of claims 1 to 8, characterized in that, The privacy structure also includes a transmissive portion disposed between adjacent light-blocking portions, the transmissive portion being configured to enhance the brightness of the light emitted by the light-emitting element and project it outwards.

10. The display panel according to claim 9, characterized in that, At least a portion of the transmissive portion is projected onto the substrate in a direction within which the light-emitting element is projected onto the substrate.

11. The display panel according to claim 9, characterized in that, The transmission section includes a transmission grating.

12. The display panel according to claim 11, characterized in that, The transmission grating includes a grating portion and a gap portion, the gap portion being located between two adjacent grating portions, and the material of the grating portion includes at least one of silver and aluminum.

13. The display panel according to claim 12, characterized in that, The transmission grating includes a plurality of grating portions, which are arranged in an array along a first direction and a second direction, wherein the first direction and the second direction intersect; or... The grating portion extends along a first direction and is arranged along a second direction, wherein the first direction and the second direction intersect.

14. The display panel according to claim 13, characterized in that, Along the second direction, the size e of the grating portion and the size p of the gap portion satisfy: 0.3 < e / p < 0.

5.

15. The display panel according to claim 14, characterized in that, 90nm≤e≤110nm.

16. The display panel according to claim 14, characterized in that, 100nm≤p≤400nm.

17. The display panel according to claim 1, characterized in that, The display panel further includes a planarization layer, which fills the space between the light-shielding portions and is located on the side of the privacy structure opposite to the display panel.

18. The display panel according to claim 17, characterized in that, The light transmittance T of the planarization layer satisfies: 60% ≤ T ≤ 90%.

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

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