Display panel and electronic device

Abstract

This application discloses a display panel and an electronic device. The display panel includes: a substrate; a light-emitting layer disposed on the substrate, the light-emitting layer including a plurality of light-emitting sub-pixels; and a microprism layer disposed on the side of the light-emitting layer opposite to the substrate, including a plurality of microprisms, each microprism corresponding to at least one light-emitting sub-pixel. Light emitted from the light-emitting sub-pixel enters the corresponding microprism and exits through the exit surface of the microprism. The angle between the light emitted by the light-emitting sub-pixel and incident on the microprism and the target plane does not exceed a preset angle value. A portion of the light emitted through the exit surface of the microprism enters the main viewing angle range of the display panel, while the remaining portion enters the oblique viewing angle range on one side of the display panel. The target plane is perpendicular to the substrate. The display panel provided by this application can improve the viewing angle privacy 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 an electronic device. Background Technology

[0002] In recent years, with the development and widespread adoption of display technology, display devices have been applied to various electronic devices, such as mobile phones, tablets, or other portable electronic devices.

[0003] However, in some business applications, such as public places or meetings, users do not want the content displayed on electronic devices to be seen by others. For example, the person in the driver's seat does not want to see the content displayed on the screen in the passenger seat so as not to interfere with safe driving. These applications show that anti-peeping technology is receiving increasing attention from consumers in some scenarios. Summary of the Invention

[0004] This application provides a display panel and an electronic device that can improve the viewing angle privacy function of the display panel.

[0005] The first aspect of this application provides a display panel, the display panel comprising: a substrate; a light-emitting layer disposed on the substrate, the light-emitting layer comprising a plurality of light-emitting sub-pixels; a microprism layer disposed on the side of the light-emitting layer opposite to the substrate, comprising a plurality of microprisms, each microprism corresponding to at least one of the light-emitting sub-pixels, wherein light emitted by the light-emitting sub-pixels enters the corresponding microprism and exits through the exit surface of the microprism, wherein the angle between the light emitted by the light-emitting sub-pixels and incident on the microprism after light convergence and the target plane does not exceed a preset angle value, and part of the light emitted through the exit surface of the microprism enters the main viewing angle range of the display panel, while the rest enters the oblique viewing angle range on one side of the display panel, the target plane being perpendicular to the substrate.

[0006] A second aspect of this application provides an electronic device including the display panel described in any of the preceding claims.

[0007] The beneficial effect is that, in the solution of this application, a portion of the light emitted from the exiting surface of the microprism enters the main viewing angle range of the display panel, while the rest enters the oblique viewing angle range on one side of the display panel. Thus, for the light-emitting sub-pixels with microprisms, users can only observe the emitted light from the main viewing angle and one oblique viewing angle of the display panel. The emitted light cannot be observed from the oblique viewing angle on the other side of the display panel. Therefore, in addition to being able to observe the image displayed on the display panel within the main viewing angle range, users can only observe the display image from one oblique viewing angle at most. Compared with the prior art, where the display image can be observed from both oblique viewing angle ranges, this application can improve the viewing angle privacy capability of the display panel. Attached Figure Description

[0008] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0009] Figure 1 This is a cross-sectional structural schematic diagram of one embodiment of the display panel of this application;

[0010] Figure 2 yes Figure 1 A schematic diagram of the structure of two adjacent light-emitting sub-pixels and their corresponding microprisms;

[0011] Figure 3 yes Figure 2 A schematic diagram of the structure of the left half;

[0012] Figure 4 yes Figure 2 A structural diagram of the right half;

[0013] Figure 5 yes Figure 1 A schematic diagram of the structure of another part of the central display panel;

[0014] Figure 6 This is a schematic diagram of the structure of light-emitting sub-pixels arranged in an SPR configuration in an application scenario;

[0015] Figure 7 This is a schematic diagram of the structure of the light-emitting sub-pixels arranged in an SPR configuration in another application scenario;

[0016] Figure 8 This is a schematic diagram of the structure when multiple light-emitting sub-pixels are arranged in an array in an application scenario;

[0017] Figure 9 This is a schematic diagram of the arrangement of multiple microprisms in an application scenario;

[0018] Figure 10 This is a schematic diagram of the arrangement of multiple microprisms in another application scenario;

[0019] Figure 11 This is a schematic diagram of the arrangement of multiple microprisms in another application scenario;

[0020] Figure 12 This is a schematic diagram of the arrangement of multiple microprisms in another application scenario;

[0021] Figure 13 This is a schematic diagram of the arrangement of multiple microprisms in another application scenario;

[0022] Figure 14 This is a schematic diagram of the structure when multiple light-emitting sub-pixels are arranged in an array in another application scenario;

[0023] Figure 15 This is a schematic diagram of the arrangement of multiple microprisms in another application scenario;

[0024] Figure 16 This is a schematic diagram of the arrangement of multiple microprisms in another application scenario;

[0025] Figure 17 This is a diagram illustrating the process of merging the pixel grayscale data of the first image with the pixel grayscale data of the second image. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0027] It should be noted that the terms "first" and "second" in this application are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0028] See Figure 1 and Figure 2 In one embodiment of this application, the display panel 100 includes a substrate 110, a light-emitting layer 120, and a microprism layer 130.

[0029] The substrate 110 serves a supporting function and can be either a flexible or rigid substrate; this application does not impose any limitations. It is understood that when a flexible substrate is used for the substrate 110, because the flexible substrate is stretchable, bendable, or rollable, the display panel 100 can also be stretchable, bendable, or rollable. That is, in one application scenario, the display panel 100 is a flexible display panel; in a specific example, the display panel 100 is an OLED (Organic Light-Emitting Diode) display panel. It should be noted that this application does not limit the type of display panel 100; besides being an OLED display panel, it can also be an LCD display panel, a Micro-LED display panel, etc.

[0030] For ease of explanation, a target plane is defined, which is perpendicular to the substrate 110. The meaning of the target plane is explained below with examples: Generally speaking, if the display panel 100 is used on a mobile phone, and the user is holding the phone upright, in addition to the user being able to observe the image displayed on the display panel 100 within the user's main viewing angle, bystanders can usually also observe the image displayed on the display panel 100 from the left and right sides of the target plane, thus causing privacy leakage.

[0031] A light-emitting layer 120 is disposed on a substrate 110. The light-emitting layer 120 includes a plurality of light-emitting sub-pixels 121, which emit light of a preset color. The light-emitting sub-pixels 121 can be red sub-pixels (R sub-pixels), green sub-pixels (G sub-pixels), blue sub-pixels (B sub-pixels), or white sub-pixels (W sub-pixels), etc. This application does not impose specific restrictions on the type of light-emitting sub-pixels 121.

[0032] The microprism layer 130 is disposed on the side of the light-emitting layer 120 facing away from the substrate 110. That is, the substrate 110, the light-emitting layer 120, and the microprism layer 130 are stacked sequentially. The microprism layer 130 includes multiple microprisms 131, and each microprism 131 corresponds to at least one light-emitting sub-pixel 121. The number of light-emitting sub-pixels 121 corresponding to different microprisms 131 can be the same or different. For a single microprism 131, the number of light-emitting sub-pixels 121 corresponding to it can be one or more. The light-emitting sub-pixel 121 corresponding to the microprism 131 refers to the light emitted by the microprism 131 that enters the microprism 131 and exits through the exit surface of the microprism 131. In other words, the light emitted by the light-emitting sub-pixel 121 enters the corresponding microprism 131 and exits through the exit surface of the microprism 131.

[0033] In this embodiment, the light emitted by the light-emitting sub-pixel 121 and incident on the microprism 131 is converged, and the angle between the light and the target plane does not exceed a preset angle value. The preset angle value can be 15° or 30°, etc., and this application does not limit it. That is, the light incident on the microprism 131 is converged light. At the same time, part of the light emitted from the exit surface of the microprism 131 enters the main viewing angle range of the display panel 100, and the rest enters the oblique viewing angle range on one side of the display panel 100. In other words, for the light-emitting sub-pixel 121 with the microprism 131, the light emitted by it will only enter the main viewing angle range and the oblique viewing angle range on one side of the display panel 100, and will not enter the oblique viewing angle range on the other side.

[0034] Therefore, for the light-emitting sub-pixels 121 with microprisms 131, users can only observe the light emitted by them from the main viewing angle and one oblique viewing angle of the display panel 100. The light emitted by them cannot be observed from the other oblique viewing angle of the display panel 100. Thus, in addition to being able to observe the image displayed on the display panel within the main viewing angle range, users can only observe the display image from one oblique viewing angle at most. Compared with the prior art, which allows the display image to be observed from both oblique viewing angles, this application can improve the viewing angle privacy capability of the display panel.

[0035] In this configuration, the light emitted by each light-emitting sub-pixel 121 can enter its corresponding microprism 131 and exit, or the light emitted by some light-emitting sub-pixels 121 can enter its corresponding microprism 131 and exit, while the light emitted by other light-emitting sub-pixels 121 does not correspond to any microprism 131. In other words, microprisms 131 can be set for all light-emitting sub-pixels 121, or microprisms 131 can be set for only some light-emitting sub-pixels 121.

[0036] Continue reading Figure 2 In this embodiment, the boundary portion of the light emitted from the exit surface of the microprism 131 is perpendicular to the substrate 110. This ensures that, for the light-emitting sub-pixel 121 with the microprism 131, the user can only observe the light emitted by the light-emitting sub-pixel 121 from the main viewing angle of the display panel 100 and the left side of the display panel 100, or only from the main viewing angle of the display panel 100 and the right side of the display panel 100. Figure 2 The target plane is denoted by P.

[0037] In other embodiments, the boundary portion of the light emitted from the exiting surface of the microprism 131 may not be perpendicular to the substrate 110. For example, the boundary portion of the light emitted from the exiting surface of the microprism 131 may be nearly perpendicular to the substrate 110. The key is to ensure that a portion of the light emitted from the exiting surface of the microprism 131 enters the main viewing angle range of the display panel 100, while the rest enters the oblique viewing angle range on one side of the display panel 100. However, for ease of explanation, the following description assumes that the boundary portion of the light emitted from the exiting surface of the microprism 131 is perpendicular to the substrate 110. In other words, in the following embodiment, the light emitted from the exiting surface of the microprism 131 is located on one side of the target plane, and the boundary portion of that side is perpendicular to the substrate 110.

[0038] Continue reading Figures 1 to 4 In this embodiment, the microprism 131 is a prism structure, including a first side surface 1311 and a second side surface 1312 connected to the first side surface 1311. The first side surface 1311 serves as the incident surface of the microprism 131 and is parallel to the substrate 110. The second side surface 1312 serves as the exit surface of the microprism 131. The light emitted by the light-emitting sub-pixel 121 enters the microprism 131 through the first side surface 1311 and then exits the microprism 131 from the second side surface 1312.

[0039] The angle between the light emitted by the light-emitting sub-pixel 121 and the target plane is in the range of -15° to 15°; the refractive index of the microprism 131 is in the range of 1.5 to 1.9; and the angle between the exit surface of the microprism 131 and the substrate 110 is in the range of 25° to 35°. The refractive index of the microprism 131 can be 1.5, 1.6, 1.8 or 1.9, and the angle between the exit surface of the microprism 131 and the substrate 110 can be 25°, 30° or 35°.

[0040] For ease of explanation, the following description assumes that the refractive index of microprism 131 is 1.9, the angle between the exit surface of microprism 131 and substrate 110 is 30°, and the light-emitting sub-pixel 121 is used as an example. Figure 2 The scheme of this application will be introduced using the R sub-pixel as an example:

[0041] First, let the refractive index of the microprism 131 be denoted as n1, and the refractive index of the medium into which the light enters after exiting the microprism 131 be denoted as n2. Here, n2 is taken to be equal to 1. According to the law of refraction sin(θ1)n1=sin(θ2)n2, the critical incident angle for total internal reflection is 31.76° (at this time sin(θ2)=1).

[0042] Furthermore, when the angle between the exit surface of the microprism 131 and the substrate 110 is 30°, it indicates that the angle between the normal to the exit surface of the microprism 131 and the first side surface 1311 of the microprism 131 is equal to 60°. Consequently, the incident angle β of the light emitted by the light-emitting sub-pixel 121 with an angle of -15° to the target plane is equal to 15° (β = 180° - 60° - 90° - 15°). At this time, according to the law of refraction sin(θ1)n1 = sin(θ2)n2, the corresponding exit angle γ is equal to 29.46°, which is close to 30° (the light with an exit angle γ of 30° is perpendicular to the substrate 110). Therefore, it can be considered that the outgoing light is perpendicular to the substrate 110 at this time.

[0043] For the light emitted by the light-emitting sub-pixel 121 that is parallel to the target plane, the incident angle β of the light rays that are incident on the microprism 131 is equal to 30°. According to the law of refraction, the corresponding outgoing angle γ is equal to 72°. At this time, the angle between the outgoing light rays and the target plane is equal to 42°.

[0044] As mentioned above, when the incident angle β is greater than 31.76°, total internal reflection occurs. For light emitted from the light-emitting sub-pixel 121 at an angle of 15° to the target plane, and incident on the microprism 131 at an incident angle β of 45°, it is completely reflected back. Therefore, for... Figure 2 As for the R sub-pixel, the light emitted by it can only be observed on the right side of the display panel 100.

[0045] The radial section of the microprism 131 can be a right triangle (e.g., Figure 1 and Figure 2 (as shown), or it can be a right trapezoid.

[0046] In summary, this application does not impose specific limitations on the specific structure, refractive index, or radial cross-sectional shape of the microprism 131, nor does it impose any limitations on the material of the microprism 131, for example, the material can be glass.

[0047] See Figure 5 The display panel 100 further includes an encapsulation layer 140, a light-dense dielectric layer 150, a light-dense dielectric layer 160, a protective layer 170, an adhesive layer 180, and a polarizer layer 190.

[0048] A light-diffuse dielectric layer 150 is disposed on the side of the light-emitting layer 120 facing away from the substrate 110. The light-diffuse dielectric layer 150 includes a plurality of spaced light-diffuse dielectric blocks 151, wherein the gap formed between any two light-diffuse dielectric blocks 151 corresponds to the light-emitting sub-pixels 121. A light-dense dielectric layer 160 is disposed and filled in the gap between any two adjacent light-diffuse dielectric blocks 151. The light-dense dielectric layer 160 has a first surface 161 facing the substrate 110 and a second surface 162 facing away from the substrate 110. A microprism layer 130 is disposed on the light-dense dielectric layer 160 facing away from the substrate 110. On one side; wherein, light emitted by the light-emitting sub-pixel 121 with an absolute value of the angle with the target plane not exceeding a preset angle enters the optically dense medium layer 160 through the first surface 161 and exits the optically dense medium layer 160 directly through the second surface 162; light emitted by the light-emitting sub-pixel 121 with an absolute value of the angle with the target plane exceeding a preset angle enters the optically dense medium layer 160 through the first surface 161 and is incident on the optically sparse medium block 151 forming the corresponding interval and undergoes total internal reflection, thereby forming reflected light perpendicular to the substrate 110 and exiting the optically dense medium layer 160 through the second surface.

[0049] Specifically, the optically less dense medium layer 150 is optically less dense than the optically denser medium layer 160, and the optically denser medium layer 160 is optically denser than the optically less dense medium layer 150. As is well known, total internal reflection occurs when the following two conditions are met: 1. Light rays travel from the optically denser medium (refractive index n1) to the optically less dense medium (refractive index n2); 2. The angle of incidence is greater than the critical angle, where the critical angle θ... c =arcsin(n2 / n1).

[0050] In the above scheme, the spacing between two adjacent light-dense dielectric blocks 151 is set corresponding to the light-emitting sub-pixels 121. Among the light emitted by the light-emitting sub-pixels 121, the portion of light whose absolute value of the angle with the target plane does not exceed a preset angle is refracted after entering the light-dense dielectric layer 160 through the first surface 161, and then directly exits the light-dense dielectric layer 160 through the second surface 162. However, the portion of light whose absolute value of the angle with the target plane exceeds a preset angle is incident on the light-dense dielectric block 151 that forms the corresponding spacing after entering the light-dense dielectric layer 160 through the first surface 161. The incident angle at this time allows the light incident on the light-dense dielectric block 151 to undergo total internal reflection, thereby forming light perpendicular to the substrate 110, and finally exiting the light-dense dielectric layer 160 through the second surface 162.

[0051] The above method can narrow the light emitted by the light-emitting sub-pixel 121 to a preset angle range, thereby achieving narrow viewing angle display. The light focusing method used in this application is not limited to this, and will not be described in detail here.

[0052] In one application scenario, when the preset angle is equal to 15°, the above setting can narrow the light emitted by the light-emitting sub-pixel 121 to an angle between -15° and 15° with the target plane. Beyond this viewing angle range, the brightness of the light drops sharply.

[0053] Meanwhile, the encapsulation layer 140 is disposed between the photosensitive dielectric layer 150 and the light-emitting layer 120, and the protective layer 170, the adhesive layer 180, and the polarizer layer 190 are sequentially stacked on the side of the photosensitive dielectric layer 160 facing away from the substrate 110. The encapsulation layer 140 protects the light-emitting layer 120 and can specifically be an inorganic-organic-inorganic stacked structure, including a first inorganic film layer, an organic film layer, and a second inorganic film layer stacked sequentially. This application does not limit the specific structure of the encapsulation layer 140. The protective layer 170 also serves a protective function, and the adhesive layer 180 is used to bond the polarizer layer 190. This application does not limit the structure or materials of the protective layer 170, the adhesive layer 180, and the polarizer layer 190.

[0054] It should be noted that the encapsulation layer 140, protective layer 170, adhesive layer 180, and polarizer layer 190 can all be selected and set according to actual needs, and are not necessary structures.

[0055] The microprism layer 130 can be disposed on the side of the optically dense dielectric layer 160 away from the substrate 110. It can be disposed between the optically dense dielectric layer 160 and the protective layer 170, between the protective layer 170 and the adhesive layer 180, between the adhesive layer 180 and the polarizer layer 190, or on the side of the polarizer layer 190 away from the substrate.

[0056] It should be noted that the light-dense dielectric layer 150 and the light-dense dielectric layer 160 mentioned above are also non-essential structures. In other embodiments, the display panel 100 may not include the light-dense dielectric layer 150 and the light-dense dielectric layer 160.

[0057] Continue reading Figures 2 to 4 The multiple microprisms 131 include multiple first microprisms 1301 and multiple second microprisms 1302; a portion of the light emitted from the exit surface of the first microprism 1301 enters the main viewing angle range of the display panel 100, and the rest enters the oblique viewing angle range of the first side of the display panel 100; a portion of the light emitted from the exit surface of the second microprism 1302 enters the main viewing angle range of the display panel 100, and the rest enters the oblique viewing angle range of the second side of the display panel 100; the first side and the second side of the display panel 100 are arranged opposite to each other.

[0058] Specifically, for the light-emitting sub-pixel 121 corresponding to the first microprism 1301, since part of the light emitted by it eventually enters the main viewing angle range of the display panel 100, and the rest enters the oblique viewing angle range of the first side of the display panel 100, the light emitted by it cannot be observed from the oblique viewing angle range of the second side of the display panel 100. For the light-emitting sub-pixel 121 corresponding to the second microprism 1302, since part of the light emitted by it eventually enters the main viewing angle range of the display panel 100, and the rest enters the oblique viewing angle range of the second side of the display panel 100, the light emitted by it cannot be observed from the oblique viewing angle range of the first side of the display panel 100. Thus, when viewed from the oblique viewing angle range on one side of the display panel 100, it is impossible to see the light emitted by all the light-emitting sub-pixels 121 at the same time. In other words, the user cannot observe the image displayed on the display panel 100 from either side of the display panel 100, thereby further improving the viewing angle privacy function of the display panel 100.

[0059] In other words, when the light emitted from the exit surface of the first microprism 1301 is located on the left side of the target plane and the light emitted from the exit surface of the second microprism 1302 is located on the right side of the target plane, only the light-emitting sub-pixel 121 corresponding to the first microprism 1301 can be observed from the left side of the target plane, and only the light-emitting sub-pixel 121 corresponding to the second microprism 1302 can be observed from the right side of the target plane.

[0060] Continue reading Figure 2 In this embodiment, the first microprism 1301 and the second microprism 1302 have the same structure, but the tilt direction of the exit surface of the first microprism 1301 is opposite to that of the exit surface of the second microprism 1302, so that the amount of light emitted from the exit surface of the first microprism 1301 observed from one side of the target plane is equal to the amount of light emitted from the exit surface of the second microprism 1302 observed from the other side of the target plane.

[0061] Of course, in other embodiments, the structures of the first microprism 1301 and the second microprism 1302 may also be different.

[0062] Continue reading Figure 2 In this embodiment, at least one light-emitting sub-pixel 121 corresponding to the first microprism 1301 is arranged adjacent to at least one light-emitting sub-pixel 121 corresponding to the second microprism 1302.

[0063] Specifically, at least one light-emitting sub-pixel 121 corresponding to the first microprism 1301 is arranged adjacent to at least one light-emitting sub-pixel 121 corresponding to the second microprism 1302, so that the light emitted by at least one light-emitting sub-pixel 121 is ultimately located on one side of the target plane, while the light emitted by the light-emitting sub-pixel 121 adjacent to it is ultimately located on the other side of the target plane.

[0064] As is common sense, when the light emitted by two adjacent light-emitting sub-pixels 121 is located on opposite sides of the target plane, if the user observes the display panel 100 from one side, they will not be able to observe a continuous image, thus further ensuring the viewing angle privacy function of the display panel 100.

[0065] In this embodiment, the number of light-emitting sub-pixels 121 corresponding to the first microprism 1301 is equal to the number of light-emitting sub-pixels 121 corresponding to the second microprism 1302, and each of the first microprism 1301 and the second microprism 1302 corresponds to one light-emitting sub-pixel 121.

[0066] Of course, in other embodiments, the number of light-emitting sub-pixels 121 corresponding to the first microprism 1301 may not be equal to the number of light-emitting sub-pixels 121 corresponding to the second microprism 1302. The first microprism 1301 and the second microprism 1302 may each correspond to more than one light-emitting sub-pixel 121. For example, the first microprism 1301 and the second microprism 1302 may each correspond to two light-emitting sub-pixels 121.

[0067] See Figures 6 to 8 Multiple luminous sub-pixels 121 are arranged in a sub-pixel rendering SPR manner.

[0068] Specifically, Subpixel Rendering (SPR) is a widely used technology in panel manufacturing. Typically, a complete pixel unit includes red, green, and blue subpixels. However, in SPR, a complete pixel unit does not simultaneously include red, green, and blue subpixels. For proper display, a pixel unit needs to borrow subpixels from adjacent pixel units. Below are two arrangement methods for SPR:

[0069] exist Figure 6 The arrangement uses a total of 4 complete RGB units (12 sub-pixels), which is equivalent to saving 1 / 3 of the sub-pixels.

[0070] exist Figure 7 In this arrangement, a total of 6 incomplete RGB units are used, each containing either an R sub-pixel and a G sub-pixel, or a B sub-pixel and a G sub-pixel, resulting in a total of 12 sub-pixels. From Figure 7It can be seen that the R sub-pixel of the first pixel unit is shared with the second pixel unit, and the B sub-pixel of the second pixel unit is shared with the first pixel unit.

[0071] The arrangement of actual subpixel rendering technology (SPR) may involve adjacent subpixels on the top, bottom, left, and right, or the mutual borrowing of subpixels within a larger range, which will not be described in detail here.

[0072] As can be seen from the above, the main advantages of SPR are: reducing subpixels, which allows for a wider design space between pixels and subpixels on the panel, resulting in improved yield; higher transmittance and lower power consumption; and reducing the driving mechanism of pixels.

[0073] In this embodiment, by setting at least one light-emitting sub-pixel 121 corresponding to the first microprism 1301 and at least one light-emitting sub-pixel 121 corresponding to the second microprism 1302 adjacent to each other, and arranging multiple light-emitting sub-pixels 121 in a sub-pixel rendering SPR manner, the light emitted by the light-emitting sub-pixels 121 that the adjacent pixel units rely on can be discretely distributed on one side of the target plane. Thus, when the display panel 100 is observed from one side of the target plane, the complete image displayed by the display panel 100 cannot be observed because the effect of the sub-pixel rendering technology SPR is destroyed, thereby ensuring the privacy protection capability of the display panel 100.

[0074] It should be noted that in other embodiments, the multiple light-emitting sub-pixels 121 can be arranged in a conventional RGBStrip manner, that is, for any pixel unit, it does not need to borrow other adjacent light-emitting sub-pixels 121.

[0075] Continue reading Figure 8 Multiple light-emitting sub-pixels 121 are arranged in an array, that is, multiple light-emitting sub-pixels 121 form multiple pixel rows and multiple pixel columns.

[0076] In an application scenario, such as Figure 9 , Figure 10 and Figure 11 As shown, in the row direction, the light-emitting sub-pixels 121 corresponding to the first microprism 1301 and the light-emitting sub-pixels 121 corresponding to the second microprism 1302 are arranged alternately, so that in the row direction, the light emitted by two adjacent light-emitting sub-pixels 121 are finally located on both sides of the target plane.

[0077] Furthermore, in this application scenario, when the radial cross-sections of both the first microprism 1301 and the second microprism 1302 are right-angled triangles, the first microprism 1301 and the adjacent second microprism 1302 that meets the preset requirements can be integrally formed (the preset requirement is that the exit surface of the second microprism 1302 is opposite to the exit surface of the first microprism 1301), such as... Figure 10 As shown.

[0078] In a specific instance of this application scenario, such as Figure 9 As shown, in the column direction, all light-emitting sub-pixels 121 in a column correspond to either the first microprism 1301 or the second microprism 1302. That is, the light emitted by the light-emitting sub-pixels 121 in the same column is emitted from their corresponding first microprism 1301, or vice versa. It can be understood that the light emitted by the light-emitting sub-pixels 121 in the same column ultimately lies on the same side of the target plane.

[0079] In another specific instance of this application scenario, such as Figure 11 As shown, in the column direction, any two adjacent light-emitting sub-pixels 121 in the same column correspond to the first microprism 1301 and the second microprism 1302, respectively. That is to say, at this time, the light emitted by any two adjacent light-emitting sub-pixels 121 in the same column is located on both sides of the target plane.

[0080] In another application scenario, such as Figure 12 and Figure 13 As shown, in the column direction, the light-emitting sub-pixels 121 corresponding to the first microprism 1301 and the light-emitting sub-pixels 121 corresponding to the second microprism 1302 are arranged alternately, so that in the column direction, the light emitted by any two adjacent light-emitting sub-pixels 121 is finally located on both sides of the target plane.

[0081] In a specific instance of this application scenario, such as Figure 12 As shown, in the row direction, all light-emitting sub-pixels 121 in the same row correspond to either the first microprism 1301 or the second microprism 1302. That is, the light emitted by the light-emitting sub-pixels 121 in the same row is emitted from their corresponding first microprism 1301, or the light emitted by the light-emitting sub-pixels 121 in the same row is emitted from their corresponding second microprism 1302. It can be understood that the light emitted by the light-emitting sub-pixels 121 in the same row ultimately lies on the same side of the target plane.

[0082] In another specific instance of this application scenario, such as Figure 13 As shown, in the row direction, any two adjacent light-emitting sub-pixels 121 in the same row correspond to the first microprism 1301 and the second microprism 1302, respectively. That is to say, at this time, the light emitted by any two adjacent light-emitting sub-pixels 121 in the same row is located on both sides of the target plane.

[0083] The resulting pixel rows can be perpendicular to the target plane (e.g.) Figure 8 As shown, Figure 8The target plane is labeled with P), or it can be non-perpendicular to the target plane (e.g., Figure 14 As shown, Figure 14 (The target plane is labeled P). When the formed pixel row is not perpendicular to the target plane, the arrangement of the microprisms 131 can refer to the arrangement of the microprisms 131 when the pixel row is perpendicular to the target plane. For details, please refer to [link to relevant documentation]. Figure 15 as well as Figure 16 .

[0084] In this embodiment, the light-emitting sub-pixel 121 corresponding to the first microprism 1301 is defined as the first light-emitting sub-pixel, and the light-emitting sub-pixel 121 corresponding to the second microprism 1302 is defined as the second light-emitting sub-pixel. The display panel 100 also includes a timing controller TCON. The timing controller TCON is used to control all first light-emitting sub-pixels to display according to the pixel grayscale of the first image and control all second light-emitting sub-pixels to display according to the pixel grayscale of the second image after acquiring the pixel grayscale data of the first image and the pixel grayscale data of the second image.

[0085] Specifically, assuming the light emitted by the first light-emitting sub-pixel is located on the first side of the target plane, and the light emitted by the second light-emitting sub-pixel is located on the second side of the target plane, then the image presented by all the first light-emitting sub-pixels can be observed from the first side of the target plane, and the image presented by all the second light-emitting sub-pixels can be observed from the second side of the target plane.

[0086] Therefore, in order for the display panel 100 to achieve dual-view display, the timing controller TCON, after receiving the pixel grayscale data of the first image and the pixel grayscale data of the second image, controls the first light-emitting sub-pixel to display according to the pixel grayscale of the first image and controls the second light-emitting sub-pixel to display according to the pixel grayscale of the second image.

[0087] For ease of understanding, the following is combined Figure 17 To illustrate, assume that the microprism 131 is in the following position. Figure 11 The image is set up with a horizontally staggered arrangement, where R1x, G1x, and B1x are the pixel grayscale data of the first image, and R2x, G2x, and B2x are the pixel grayscale data of the second image. To achieve dual-view display, the pixel grayscale data of the first image and the second image are arranged in a staggered manner. Figure 17 The Mosaic arrangement shown is merged, and finally the timing controller TCON controls all first luminous sub-pixels and all second luminous sub-pixels to be displayed according to the merged result.

[0088] The first light-emitting sub-pixel and the second light-emitting sub-pixel are spaced apart to avoid light crosstalk. At the same time, the light emission directions of the first microprism 1301 corresponding to the first light-emitting sub-pixel and the second microprism 1302 corresponding to the second light-emitting sub-pixel are different at the oblique angle. That is, the light emitted from the first microprism 1301 and the second microprism 1302 is directed to different oblique angles, so it is impossible to observe the light emitted from the first microprism 1301 and the second microprism 1302 simultaneously from one oblique angle.

[0089] In addition, this application also protects an electronic device that includes the display panel 100 in any of the above embodiments. The electronic device can be any device with display function, such as a mobile phone or a computer. This application does not specifically limit the type of the electronic device.

[0090] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A display panel, characterized in that, The display panel includes: substrate; A light-emitting layer is disposed on the substrate, and the light-emitting layer includes a plurality of light-emitting sub-pixels; A microprism layer is disposed on the side of the light-emitting layer away from the substrate, and includes multiple microprisms. Each microprism corresponds to at least one light-emitting sub-pixel. The light emitted by the light-emitting sub-pixel enters the corresponding microprism and exits through the exit surface of the microprism. The light emitted by the light-emitting sub-pixel and incident on the microprism is converged and the angle between it and the target plane does not exceed a preset angle value. A portion of the light emitted through the exit surface of the microprism enters the main viewing angle range of the display panel, and the rest enters the oblique viewing angle range on one side of the display panel. The target plane is perpendicular to the substrate. The microprism has a prism structure, including a first side surface and a second side surface connected to the first side surface. The first side surface serves as the incident surface of the microprism and is parallel to the substrate, while the second side surface serves as the exit surface of the microprism. The angle between the light emitted by the light-emitting sub-pixel and the target plane is in the range of -15° to 15°, the refractive index of the microprism is in the range of 1.5 to 1.9, and the angle between the exit surface of the microprism and the substrate is in the range of 25° to 35°.

2. The display panel according to claim 1, characterized in that, The boundary portion of the light emitted from the exit surface of the microprism is perpendicular to the substrate.

3. The display panel according to claim 1, characterized in that, The radial cross-section of the microprism is a right triangle or a right trapezoid.

4. The display panel according to claim 1, characterized in that, The plurality of microprisms includes a plurality of first microprisms and a plurality of second microprisms; Among them, a portion of the light emitted from the exit surface of the first microprism enters the main viewing angle range of the display panel, while the rest enters the oblique viewing angle range of the first side of the display panel. A portion of the light emitted from the exit surface of the second microprism enters the main viewing angle range of the display panel, while the rest enters the oblique viewing angle range of the second side of the display panel. The first side and the second side of the display panel are arranged opposite to each other.

5. The display panel according to claim 4, characterized in that, The first microprism has the same structure as the second microprism, but the tilt direction of the exit surface of the first microprism is opposite to that of the exit surface of the second microprism.

6. The display panel according to claim 4, characterized in that, At least one light-emitting sub-pixel corresponding to the first microprism is arranged adjacent to at least one light-emitting sub-pixel corresponding to the second microprism.

7. The display panel according to claim 6, characterized in that, The light emitted by each of the light-emitting sub-pixels is emitted through the exit surface of its corresponding microprism.

8. The display panel according to claim 6, characterized in that, The number of light-emitting sub-pixels corresponding to the first microprism is equal to the number of light-emitting sub-pixels corresponding to the second microprism.

9. The display panel according to claim 8, characterized in that, The first microprism and the second microprism each correspond to one of the light-emitting sub-pixels.

10. The display panel according to claim 6, characterized in that, The plurality of luminescent sub-pixels are arranged in a sub-pixel rendering SPR manner.

11. The display panel according to claim 6, characterized in that, The plurality of light-emitting sub-pixels are arranged in an array; In the row direction, the light-emitting sub-pixels corresponding to the first microprism and the light-emitting sub-pixels corresponding to the second microprism are arranged alternately. In the column direction, all the light-emitting sub-pixels in the same column correspond to the first microprism / the second microprism, or in the column direction, any two adjacent light-emitting sub-pixels in the same column correspond to the first microprism and the second microprism, respectively. Alternatively, in the column direction, the light-emitting sub-pixels corresponding to the first microprism and the light-emitting sub-pixels corresponding to the second microprism are arranged alternately, while in the row direction, all the light-emitting sub-pixels in the same row correspond to the first microprism / the second microprism, or in the row direction, any two adjacent light-emitting sub-pixels in the same row correspond to the first microprism and the second microprism respectively.

12. The display panel according to claim 6, characterized in that, The light-emitting sub-pixel corresponding to the first microprism is defined as the first light-emitting sub-pixel, and the light-emitting sub-pixel corresponding to the second microprism is defined as the second light-emitting sub-pixel; The display panel further includes a timing controller, which is used to control all first luminous sub-pixels to be displayed according to the pixel grayscale of the first image and all second luminous sub-pixels to be displayed according to the pixel grayscale of the second image after acquiring the pixel grayscale data of the first image and the pixel grayscale data of the second image.

13. The display panel according to claim 12, characterized in that, The first light-emitting sub-pixel and the second light-emitting sub-pixel are spaced apart, and the light emission directions of the corresponding first microprism and second microprism are different at different angles.

14. The display panel according to claim 1, characterized in that, The display panel further includes: A light-reducing dielectric layer is disposed on the side of the light-emitting layer away from the substrate. The light-reducing dielectric layer includes a plurality of spaced light-reducing dielectric blocks, wherein the spacing between any two light-reducing dielectric blocks corresponds to the light-emitting sub-pixel. An optically dense dielectric layer is disposed in the gap between any two adjacent optically sparse dielectric blocks, and has a first surface facing the substrate and a second surface facing away from the substrate. The microprism layer is disposed on the side of the optically dense dielectric layer facing away from the substrate. Specifically, light emitted by the light-emitting sub-pixel with an absolute angle to the target plane that does not exceed a preset angle enters the optically dense medium layer through the first surface and exits the optically dense medium layer directly through the second surface; light emitted by the light-emitting sub-pixel with an absolute angle to the target plane that exceeds the preset angle enters the optically dense medium layer through the first surface, is incident on the optically sparse medium block forming the corresponding interval, and undergoes total internal reflection, thereby forming reflected light perpendicular to the substrate and exiting the optically dense medium layer through the second surface.

15. The display panel according to claim 14, characterized in that, The display panel further includes an encapsulation layer disposed between the photosensitive dielectric layer and the light-emitting layer.

16. An electronic device, characterized in that, Includes the display panel as described in any one of claims 1 to 15.

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