Display panel and display device

Abstract

The display panel and the display device provided by the embodiment of the present application, the light-transmitting area of the camera area of the display panel is provided with a diffractive optical element which can cooperate with the periodic pixel units of the camera area to modulate the incident light incident to the display panel, so that the divergence angle of the emergent light of the display panel is smaller than that of the incident light. In this way, the non-collimated incident light can become relatively collimated light after passing through the display panel, thereby reducing the convergence of the diffraction spots in each direction, reducing the starburst effect generated during shooting, ensuring the clarity of the captured image, and improving the overall imaging effect of the image.

Description

Technical Field

[0001] This invention belongs to the field of display technology, specifically relating to a display panel and a display device. Background Technology

[0002] To meet the high screen-to-body ratio design requirements of display devices, the front-facing camera is usually placed under a transparent display screen. While this method can achieve a full-screen display, the images captured when taking pictures using the display device are usually blurry, resulting in a lower overall image quality. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention provides a display panel and display device. By setting diffractive optical elements in the light-transmitting area, the diffractive optical elements, in conjunction with the pixel units, modulate the incident light incident on the display panel, so that the divergence angle of the light exiting the display panel is smaller than the divergence angle of the incident light. This allows the non-collimated incident light to become relatively collimated light after passing through the display panel, thereby reducing the convergence of diffraction spots in various directions, reducing the starburst effect during photography, ensuring the clarity of the captured image, and improving the overall imaging effect.

[0004] A first aspect of the present invention provides a display panel 100, including: a display area AA and a camera area CA located within the display area AA; the camera area CA includes periodically arranged pixel units 10 and a light-transmitting area 20 disposed between the pixel units 10; the light-transmitting area 20 is provided with a diffractive optical element 30, the diffractive optical element 30 being used to cooperate with the pixel units 10 to modulate the incident light incident on the display panel 100, so that the divergence angle of the emitted light exiting the display panel 100 is smaller than the divergence angle of the incident light.

[0005] In an alternative embodiment of the first aspect, the diffractive optical element 30 is an amplitude-type diffractive optical element 31; the amplitude-type diffractive optical element 31 is used to diffract a portion of the incident light and generate a first outgoing light, such that the bright fringes of the first outgoing light emanating from the display panel 100 and the dark fringes of another portion of the incident light overlap in the position of the camera module disposed in the imaging area CA, and the dark fringes of the first outgoing light emanating from the display panel 100 and the bright fringes of another portion of the incident light overlap in the position of the camera module disposed in the imaging area CA; wherein the camera module is located on the non-display surface of the display panel 100.

[0006] In an alternative embodiment of the first aspect, the amplitude-type diffractive optical element 31 includes a first transparent region 311 and a second region 312 that is at least partially opaque; the second region 312 includes: a strip region 3121 corresponding to the position of the light-shielding band of the pixel unit 10 disposed in the imaging area CA, and irregularly shaped side strip regions 3122 distributed on both sides of the strip region 3121; wherein the side strip regions 3122 are opaque, and the side strip regions 3122 include microstructures that are perpendicular to the extension direction of the strip region 3121 and randomly distributed on both sides of the strip region 3121.

[0007] In an alternative embodiment of the first aspect, the microstructure includes an opaque rectangular structure 3122a; one wide side of the rectangular structure 3122a coincides with the side of the strip region 3121, and rectangular structures 3122a of different lengths are distributed along the extension direction of the strip region 3121 to jointly form the side strip region 3122, wherein the length of each rectangular structure 3122a is not greater than the width of the strip region 3121.

[0008] In an alternative embodiment of the first aspect, the microstructure includes an opaque equilateral triangle structure 3122b; one side of the equilateral triangle structure 3122b coincides with the side of the strip region 3121, and equilateral triangle structures 3122b of different sizes are distributed along the extension direction of the strip region 3121 to jointly form the side strip region 3122, wherein the side length of the equilateral triangle structure 3122b is not greater than the width of the strip region 3121.

[0009] In an alternative embodiment of the first aspect, the microstructure includes an opaque semi-circular structure 3122c; the diameter of the semi-circular structure 3122c coincides with the side edge of the strip region 3121, and semi-circular structures 3122c of different diameters are distributed along the extension direction of the strip region 3121 to jointly form the side strip region 3122, wherein the diameter of the semi-circular structure 3122c is not greater than the width of the strip region 3121.

[0010] In an alternative embodiment of the first aspect, the side strip regions 3122 located on both sides of the strip region 3121 are symmetrical or complementary with respect to the central axis of the strip region 3121; preferably, two adjacent microstructures in the side strip regions 3122 are adjacent to or partially overlap each other.

[0011] In an alternative embodiment of the first aspect, the amplitude-type diffractive optical element 31 includes a transparent substrate and an opaque coating disposed on the transparent substrate, wherein the area where the opaque coating is located at least forms the side zone region 3122; or the amplitude-type diffractive optical element 31 is an opaque substrate, wherein the area retained after the opaque substrate has been hollowed out at least forms the side zone region 3122.

[0012] In an alternative embodiment of the first aspect, the diffractive optical element 30 is a phase-type diffractive optical element 32; different regions of the phase-type diffractive optical element 32 have different refractive indices for refracting the incident light so that the divergence angle of the outgoing light exiting the display panel 100 is smaller than the divergence angle of the incident light.

[0013] Preferably, the phase-type diffractive optical element 32 has a single-layer structure and includes multiple refractive regions, at least some of which have different refractive indices.

[0014] Preferably, the phase-type diffractive optical element 32 has a single-layer structure and includes multiple refractive regions, at least some of which have different thicknesses.

[0015] Preferably, the phase-type diffractive optical element 32 has a stacked structure, with each layer having a different refractive index;

[0016] Preferably, the phase-type diffractive optical element 32 has a stacked structure, with each layer having a different thickness;

[0017] Preferably, the phase-type diffractive optical element 32 is a stacked structure, each layer including multiple refractive regions, and at least some of the refractive regions have different refractive indices;

[0018] Preferably, the phase-type diffractive optical element 32 is a stacked structure, each layer comprising multiple refractive regions, at least some of which have different thicknesses.

[0019] A second aspect of the present invention provides a display device, including a camera module and a display panel 100 as described in the first aspect, wherein the camera module is disposed in the camera area CA of the display panel 100 and the camera module is located on the non-display surface of the display panel 100.

[0020] In summary, compared to existing technologies, the display panel and display device provided in this invention allow the diffractive optical element disposed in the light-transmitting area of ​​the camera region of the display panel to cooperate with the periodic pixel units of the camera region to modulate the incident light incident on the display panel, so that the divergence angle of the emitted light exiting the display panel is smaller than the divergence angle of the incident light. This design enables non-collimated incident light to become relatively collimated light after passing through the display panel, thereby reducing the convergence of diffraction spots in various directions, reducing the starburst effect during photography, ensuring the clarity of the captured image, and improving the overall imaging effect. Attached Figure Description

[0021] Figure 1 A plan view of the display panel provided in an embodiment of the present invention.

[0022] Figure 2 This is a schematic diagram illustrating the principle of weaker diffraction of an amplitude-type diffractive optical element provided in an embodiment of the present invention.

[0023] Figure 3 This is a schematic diagram of the structure of the amplitude-type diffractive optical element provided in an embodiment of the present invention.

[0024] Figure 4 for Figure 3 The diagram shows the structure of the second region.

[0025] Figure 5 for Figure 3 The diagram shows one possible implementation of the second region.

[0026] Figure 6 for Figure 3 The diagram illustrates another possible implementation of the second region shown.

[0027] Figure 7 for Figure 4 A schematic diagram of the first possible microstructure of the sideband region shown.

[0028] Figure 8 for Figure 4 A schematic diagram of the second possible microstructure of the sideband region shown.

[0029] Figure 9 for Figure 4 A schematic diagram of the third possible microstructure of the sideband region shown.

[0030] Figure 10 for Figure 4 The diagram shows the first distribution of the sideband region.

[0031] Figure 11 for Figure 4 The diagram shows the second distribution of the sideband region.

[0032] Figure 12 for Figure 4 The diagram shows the third distribution of the sideband region.

[0033] Figure 13 for Figure 12 The diagram shows the formation of the sideband region.

[0034] Figure 14 This is a schematic diagram of the edge routing of a sideband region provided in an embodiment of the present invention.

[0035] Figure 15 This is a schematic diagram of another edge routing of the sideband region provided in an embodiment of the present invention.

[0036] Figure 16 This is a schematic diagram of another edge routing of the sideband region provided in an embodiment of the present invention.

[0037] Figures 17a-17f Schematic diagrams illustrating various embodiments of the phase-type diffractive optical element provided in this invention.

[0038] icon:

[0039] 100 - Display panel; 10 - Pixel unit; 20 - Light-transmitting area; 30 - Diffractive optical element; 31 - Amplitude-type diffractive optical element; 311 - First region; 312 - Second region; 3121 - Strip area; 3122 - Side strip area; 3122a - Rectangular structure; 3122b - Equilateral triangle structure; 3122c - Semicircular structure; 32 - Phase-type diffractive optical element; AA - Display area; CA - Camera area. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0041] In the description of this invention, it should be understood that the terms "center," "lateral," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, it should be noted that when an element is referred to as "formed on another element," it can be directly connected to the other element or an intervening element may be present simultaneously. When an element is considered to be "connected" to another element, it can be directly connected to the other element or an intervening element may be present simultaneously. Conversely, when an element is referred to as "directly on" another element, there is no intermediate element.

[0042] As described in the background section, in order to improve the clarity of images captured by full-screen display devices and enhance the overall imaging effect, this invention innovatively proposes a technical solution that combines diffractive optical elements with periodically arranged pixel units to modulate the incident light incident on the display panel. This allows the non-collimated incident light to become relatively collimated light after passing through the display panel, thereby reducing the convergence of diffraction spots in various directions, reducing the starburst effect during photography, ensuring the clarity of the captured image, and improving the overall imaging effect.

[0043] Please refer to the following first. Figure 1 This diagram illustrates a planar schematic of a display panel 100 provided in an embodiment of the present invention. The display panel 100 may include a display area AA and a camera area CA located within the display area AA. The camera area CA includes periodically arranged pixel units 10 and a light-transmitting area 20 disposed between the pixel units 10. The light-transmitting area 20 is provided with a diffractive optical element 30. The diffractive optical element 30 can be used in conjunction with the pixel units 10 to modulate the incident light incident on the display panel 100, so that the divergence angle of the emitted light exiting the display panel 100 is smaller than the divergence angle of the incident light. This design allows non-collimated incident light to become relatively collimated light after passing through the display panel 100, thereby reducing the convergence of diffraction spots in various directions, reducing the starburst effect during photography, ensuring the clarity of the captured image, and improving the overall imaging effect.

[0044] In actual implementation, the diffractive optical element 30 can be either an amplitude-type diffractive optical element 31 or a phase-type diffractive optical element. The two different types of diffractive optical elements 30 have different principles for changing the optical path. The two different types of diffractive optical elements 30 will be further explained below with reference to the accompanying drawings.

[0045] Please refer to the following: Figure 2The amplitude-type diffractive optical element 31 can be used to diffract part of the incident light and generate the first emitted light, such that the bright fringe St11 of the first emitted light emanating from the display panel 100 and the dark fringe St21 of another part of the incident light overlap in the position of the camera module disposed in the imaging area CA, and the dark fringe St12 of the first emitted light emanating from the display panel 100 and the bright fringe St22 of another part of the incident light overlap in the position of the camera module disposed in the imaging area CA. The camera module is located on the non-display surface of the display panel 100. With this design, the bright and dark fringes cancel each other out, and the light-sensing area in the camera module can be... Figure 2 Compared to the second light-sensing area SA2 in a camera module without amplitude-type diffractive optical element 31, the first light-sensing area SA1 in this solution can reduce the convergence of diffraction spots in all directions, reduce the starburst effect during shooting, ensure the clarity of the captured image, and improve the overall imaging effect of the image.

[0046] Please refer to the following: Figure 3 and Figure 4 The amplitude-type diffractive optical element 31 includes a first transparent region 311 and a second region 312 that is at least partially opaque. The second region 312 may include: a strip region 3121 corresponding to the position of the light-shielding strip disposed on the pixel unit 10 in the imaging area CA, and irregularly shaped side strip regions 3122 distributed on both sides of the strip region 3121. The strip region 3121 includes a first direction ( Figure 3 Multiple first strip patterns 3121x distributed in the x-direction and along the second direction (in the x-direction) Figure 3 Multiple second strip patterns 3121y are distributed in the y direction, and the first strip pattern 3121x and the second strip pattern 3121y overlap each other.

[0047] Optionally, when the first strip pattern 3121x and the second strip pattern 3121y are opaque, the second region 312 is... Figure 5 The black shadow area in the image. When the first strip pattern 3121x and the second strip pattern 3121y are transmitted light, the second region 312 is... Figure 6 The black shaded area in the image. This is understandable. Figure 1 The light-shielding strip of the display panel 100 shown coincides with the first strip pattern 3121x and the second strip pattern 3121y.

[0048] Please continue reading. Figure 4The sideband region 3122 is opaque and includes microstructures that are perpendicular to the extension direction of the strip region 3121 and randomly distributed on both sides of the strip region 3121. These microstructures can disrupt the periodicity of the diffracted beam's optical path, weaken the diffraction effect, thereby reducing starburst response during imaging and improving image quality. In this embodiment, the microstructures can include various structures, such as, but not limited to, rectangular structures, equilateral triangular structures, and semi-circular structures. The rectangular, equilateral triangular, and semi-circular structures are described below. It is understood that, in specific implementations, the implementation is not limited to these three types of microstructures.

[0049] Please refer to the following: Figure 7 The microstructure can be a rectangular structure 3122a, with one wide side of the rectangular structure 3122a coinciding with the side of the strip region 3121. Rectangular structures 3122a of different lengths extend along the direction of the strip region 3121. Figure 7 The y-direction distribution in the middle forms the side zone 3122.

[0050] Please refer to the following: Figure 8 The microstructure can also be an equilateral triangle structure 3122b, with one side of the equilateral triangle structure 3122b coinciding with the side of the strip region 3121. Equilateral triangle structures 3122b of different sizes extend along the direction of the strip region 3121 (e.g., ...). Figure 8 The y-direction distribution in the middle forms the side zone 3122.

[0051] Please refer to the following: Figure 9 The microstructure can also be an opaque semi-circular structure 3122c, the diameter of which coincides with the side of the strip region 3121. Semi-circular structures 3122c of different diameters extend along the direction of the strip region 3121 (e.g., Figure 9 The y-direction distribution in the middle forms the side zone 3122.

[0052] In some examples, in practical applications, the length L1 of each rectangular structure 3122a is not greater than the width W of the strip region 3121, the side length L2 of each equilateral triangle structure 3122b is not greater than the width W of the strip region 3121, and the diameter L3 of each semicircular structure 3122c is not greater than the width W of the strip region 3121. This ensures that the microstructure disrupts the periodicity of the diffraction beam while ensuring that the area of ​​the first region of the light-transmitting area is large enough to guarantee the light transmittance of the diffraction optical element 3.

[0053] Furthermore, adjacent microstructures in the sideband region 3122 are adjacent to or partially overlap each other. Taking a rectangular structure 3122a as an example, one long side of one of the two adjacent rectangular structures 3122a coincides with one long side of the other rectangular structure 3122a, or the two adjacent rectangular structures 3122a partially overlap. Taking an equilateral triangle structure 3122b as an example, one vertex of one of the two adjacent equilateral triangle structures 3122b coincides with one vertex of the other equilateral triangle structure 3122b, or the two adjacent equilateral triangle structures 3122b partially overlap. Taking a semicircular structure 3122c as an example, one endpoint of one of the two adjacent semicircular structures 3122c coincides with one endpoint of the other semicircular structure 3122c, or the two adjacent semicircular structures 3122c partially overlap.

[0054] In an alternative embodiment, the side strip regions 3122 located on both sides of the strip region 3121 are symmetrical or complementary with respect to the central axis of the strip region 3121. Taking a rectangular structure 3122a as an example of the microstructure of the side strip region 3122, as shown below... Figure 10 As shown, the side strip regions 3122 located on both sides of the strip region 3121 are symmetrical with respect to the central axis S of the strip region 3121, or as shown in the figure. Figure 11 As shown, the side strip regions 3122 located on both sides of the strip region 3121 are complementary to the central axis S of the strip region 3121.

[0055] like Figure 12 As shown, of the n rectangular structures 3122a of different lengths, m of the rectangular structures 3122a extend towards side A of the strip region 3121 with the central axis S as the reference, and the other k rectangular structures 3122a extend towards side B of the strip region 3121 with the central axis S as the reference, where n is a positive integer, and m and k are positive integers less than n. Furthermore, "complementary" can be understood as follows: the sum of the extension lengths of the rectangular structures 3122a located on opposite sides of the strip region 3121 is a constant (this constant can be the length of the rectangular structure 3122a at the corresponding position in the strip region 3121).

[0056] Please continue reading. Figure 13 The portions of m rectangular structures 3122a that extend beyond the edge of the strip region 3121 on side A (near the dashed line on side A) form the side strip region 3122 of the strip region 3121 on side A. Similarly, the portions of k rectangular structures 3122a that extend beyond the edge of the strip region 3121 on side B (near the dashed line on side B) form the side strip region 3122 of the strip region 3121 on side B. The area of ​​the side strip region 3122 on side A can be the same as the area of ​​the side strip region 3122 on side B.

[0057] Based on the above description of the rectangular structure 3122a, the equilateral triangular structure 3122b, and the semi-circular structure 3122c, the following will further explain how these structures disrupt the periodicity of the diffracted beam.

[0058] Please refer to the following: Figure 14 A schematic diagram of a microstructure with a rectangular structure 3122a as the sideband region 3122 is shown. For ease of explanation, five rectangular structures a1, a2, a3, a4, and a5 are used as an example. Of course, in specific implementations, the number of rectangular structures 3122a is not limited to the five mentioned above. Furthermore, the five rectangular structures a1, a2, a3, a4, and a5, due to their different lengths, can form an irregular trace line 1 along the edge of the sideband region 3122. This trace line 1 can be stepped. When the diffracted coherent light passes through the junction between the first region 311 and the trace line 1, the irregular shape of the trace line 1 can periodically disrupt the optical path of the diffracted coherent light, causing the bright and dark fringes of different coherent lights to cancel each other out after passing through the trace line 1, thereby weakening the influence of the diffracted beam on imaging.

[0059] Please refer to the following: Figure 15 A schematic diagram of a microstructure with an equilateral triangle structure 3122b as the side zone region 3122 is shown. For ease of explanation, five equilateral triangle structures b1, b2, b3, b4, and b5 are used as an example. Of course, in specific implementations, the number of equilateral triangle structures 3122b is not limited to the five mentioned above. Furthermore, the five equilateral triangle structures b1, b2, b3, b4, and b5, due to their different side lengths, can form irregular traces line2 along the edge of the side zone region 3122. These traces line2 can be zigzag-shaped. When the diffracted coherent light passes through the junction between the first region 311 and the trace line2, the irregular shape of the trace line2 can periodically disrupt the optical path of the diffracted coherent light, causing the bright and dark fringes of different coherent lights to cancel each other out after passing through the trace line2, thereby weakening the influence of the diffracted beam on imaging.

[0060] Please refer to the following: Figure 16A schematic diagram of the microstructure with a semi-circular structure 3122c as the sideband region 3122 is shown. For ease of explanation, five semi-circular structures c1, c2, c3, c4, and c5 are used as an example. Of course, in specific implementations, the number of semi-circular structures 3122c is not limited to the above five. Furthermore, the five semi-circular structures c1, c2, c3, c4, and c5, due to their different diameters, can form irregular traces line 3 along the edge of the sideband region 3122. These traces line 3 can be wavy. When the diffracted coherent light passes through the junction between the first region 311 and the trace line 3, the irregular shape of the trace line 3 can periodically disrupt the optical path of the diffracted coherent light, causing the bright and dark fringes of different coherent lights to cancel each other out after passing through the trace line 3, thereby weakening the influence of the diffracted beam on imaging.

[0061] Furthermore, the amplitude-type diffractive optical element 31 may include a transparent substrate and an opaque coating disposed on the transparent substrate, wherein the area where the opaque coating is located forms at least a side zone 3122 of the second region 312. In this embodiment, to improve the transmittance of the amplitude-type diffractive optical element 31, the material of the transparent substrate may be SiO2, SiNx, or Al2O3, etc., and is not limited thereto. In this embodiment, the opaque coating may be a metal coating (e.g., a cadmium coating). The opaque coating may be bonded to the transparent substrate with optical adhesive.

[0062] Optionally, to further improve the transmittance of the amplitude-type diffractive optical element 31, the amplitude-type diffractive optical element 31 can also be formed by a hollowing process. For example, the hollowing process is performed on an opaque substrate, and the area retained after hollowing forms at least the side zone 3122 of the second region 312.

[0063] In other examples, if the diffractive optical element 30 is a phase-type diffractive optical element 32, the materials and manufacturing process of the phase-type diffractive optical element 32 can be adapted to allow different regions of the phase-type diffractive optical element 32 to have different refractive indices. This allows the phase-type diffractive optical element 32 to refract the incident light, making the divergence angle of the emitted light exiting the display panel 100 smaller than the divergence angle of the incident light. This causes the non-collimated incident light to become relatively collimated light after passing through the display panel 100, thereby reducing the convergence of diffraction spots in all directions, reducing the starburst effect during photography, ensuring the clarity of the captured image, and improving the overall imaging effect.

[0064] In some possible implementations, the hierarchical structure of the phase-type diffractive optical element 32 can be a single-layer structure or a multi-layer structure. Several possible embodiments are given below. Of course, in specific implementations, it is not limited to the following embodiments.

[0065] like Figure 17a As shown, in the first hierarchical structure embodiment, the phase-type diffractive optical element 32 is a single-layer structure, comprising multiple refractive regions, at least some of which have different refractive indices. It can be understood that the first hierarchical structure embodiment can achieve localized design of refractive indices by combining the materials used to fabricate the phase-type diffractive optical element 32. With this design, when the diffracted beam passes through regions with different refractive indices, the optical path changes, thereby ensuring that non-collimated incident light becomes relatively collimated light after passing through the display panel 100.

[0066] like Figure 17b As shown, in the second hierarchical structure embodiment, the phase-type diffractive optical element 32 is a single-layer structure, comprising multiple refractive regions, at least some of which have different thicknesses. It can be understood that the second hierarchical structure embodiment can achieve localized design of refractive index by adjusting the thickness.

[0067] like Figure 17c As shown, in the third layered structure embodiment, the phase-type diffractive optical element 32 is a stacked structure, with each layer having a different refractive index. It can be understood that by differentiating the materials of each layer to achieve a differentiated refractive index design, it is possible to ensure that non-collimated incident light becomes relatively collimated light after passing through the display panel 100.

[0068] like Figure 17d As shown, in the fourth layer structure embodiment, the phase-type diffractive optical element 32 is a stacked structure, with each layer having a different thickness. It can be understood that by differentiating the thickness of each layer to achieve a different refractive index, it is possible to ensure that non-collimated incident light becomes relatively collimated light after passing through the display panel 100.

[0069] like Figure 17e As shown, in the fifth-level structure embodiment, the phase-type diffractive optical element 32 is a stacked structure, with each layer including multiple refractive regions, at least some of which have different refractive indices. It can be understood that by combining the materials used to fabricate each layer to achieve localized design of refractive indices, it is possible to ensure that non-collimated incident light becomes relatively collimated light after passing through the display panel 100.

[0070] like Figure 17fAs shown, in the sixth-layer structure embodiment, the phase-type diffractive optical element 32 is a stacked structure, with each layer including multiple refractive regions, at least some of which have different thicknesses. It can be understood that by differentiating the thickness of each layer to achieve localized refractive index design, it is possible to ensure that non-collimated incident light becomes relatively collimated light after passing through the display panel 100.

[0071] Based on the above, a display device is also provided, which includes a camera module and the aforementioned display panel 100. The camera module is disposed in the imaging area CA of the display panel 100, and is located on the non-display surface of the display panel 100. For example, this display device can be a mobile phone, digital camera, tablet computer, laptop computer, or portable display terminal, etc. When using this display device to capture images, the clarity of the captured images can be ensured, thereby guaranteeing the overall imaging effect of the image.

[0072] In summary, the display panel 100 and display device provided in this embodiment of the invention allow the diffractive optical element 30 disposed in the light-transmitting area 20 of the imaging area CA of the display panel 100 to cooperate with the periodic pixel units 10 of the imaging area CA to modulate the incident light incident on the display panel 100, so that the divergence angle of the emitted light exiting the display panel 100 is smaller than the divergence angle of the incident light. This design enables non-collimated incident light to become relatively collimated light after passing through the display panel 100, thereby reducing the convergence of diffraction spots in various directions, reducing the starburst effect during photography, ensuring the clarity of the captured image, and improving the overall imaging effect.

[0073] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0074] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A display panel (100), characterized in that, include: Display area (AA) and camera area (CA) located within the display area (AA); The camera area (CA) includes periodically arranged pixel units (10) and a light-transmitting area (20) disposed between the pixel units (10); The light-transmitting area (20) is provided with a diffractive optical element (30), which is a phase-type diffractive optical element (32). The phase-type diffractive optical element (32) has different refractive indices in different regions with non-periodic distribution to achieve local differentiation of refractive index. The phase-type diffractive optical element (32) is used to refract incident light so that the divergence angle of the outgoing light emitted from the display panel (100) is smaller than the divergence angle of the incident light.

2. The display panel (100) according to claim 1, characterized in that, The phase-type diffractive optical element (32) is a single-layer structure, and the phase-type diffractive optical element (32) includes multiple refractive regions, at least some of which have different refractive indices.

3. The display panel (100) according to claim 1, characterized in that, The phase-type diffractive optical element (32) is a single-layer structure, and the phase-type diffractive optical element (32) includes multiple refractive regions, at least some of which have different thicknesses.

4. The display panel (100) according to claim 1, characterized in that, The phase-type diffractive optical element (32) has a stacked structure, with each layer having a different refractive index.

5. The display panel (100) according to claim 1, characterized in that, The phase-type diffractive optical element (32) has a stacked structure, with each layer having a different thickness.

6. The display panel (100) according to claim 1, characterized in that, The phase-type diffractive optical element (32) is a stacked structure, each layer of which includes multiple refractive regions, and at least some of the refractive regions have different refractive indices.

7. The display panel (100) according to claim 1, characterized in that, The phase-type diffractive optical element (32) is a stacked structure, each layer of which includes multiple refractive regions, and at least some of the refractive regions have different thicknesses.

8. A display device, characterized in that, Includes a camera module and a display panel (100) as described in any one of claims 1-7, wherein the camera module is disposed in the camera area (CA) of the display panel (100) and the camera module is located on the non-display surface of the display panel (100).

Images