Display panel and display device

Abstract

The display panel comprises a plurality of light-emitting elements and a plurality of micro lenses located on the light-emitting sides of the light-emitting elements, and the micro lenses and the light-emitting elements are correspondingly arranged; in the light-emitting element and the micro lens which are correspondingly arranged, the micro lens comprises a bottom surface close to one side of the light-emitting element and a dimming curved surface located on one side, away from the light-emitting element, of the bottom surface; the bottom surface comprises a bottom surface center, and the dimming curved surface comprises a highest point position; in the first direction, the distance between the highest point position and the bottom surface is a first distance, and the first distance is larger than the distance between any other position in the dimming curved surface and the bottom surface; the first direction is the thickness direction of the display panel; the distance between the orthographic projection of the highest point position on the bottom surface and the center of the bottom surface is a second distance, and the second distance is in positive correlation with the first distance. According to the scheme, the light emitting efficiency under the side face large viewing angle is improved, the problem of side view angle color cast is solved, the light emitting efficiency of the display panel is higher, and light distribution is more uniform.

Description

Technical Field

[0001] Embodiments of the present invention relate to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] To improve light extraction efficiency, existing display devices typically incorporate microlens arrays above the light-emitting elements. By refracting light, the microlens array directs more of the light generated by the light-emitting elements toward the front of the display device, thereby enhancing light utilization at normal viewing angles. This is a common technical approach to improving the luminous performance of display devices.

[0003] However, the existing microlens array structure has obvious defects: the display device has good light extraction efficiency at a straight viewing angle, but when the viewing angle shifts to the side, especially at a large angle, the refraction path of light through the microlens changes, and the light extraction efficiency drops significantly, resulting in a difference in the color coordinates of the side of the display device and the front, and then the side view color deviation phenomenon occurs, affecting the display color consistency of the display device at different viewing angles. Summary of the Invention

[0004] The present invention provides a display panel and a display device. By changing the inclination of a microlens, the position of the center of curvature of the microlens surface is changed, so that the direction of the main optical axis of light passing through the microlens is changed, thereby improving the light extraction efficiency and light emission brightness at a wide side viewing angle, ensuring the overall display brightness of the display panel is balanced, and solving the problem of color deviation when viewed from the side. The display panel has higher light extraction efficiency, more uniform light distribution, more stable picture quality, and an improved user experience.

[0005] In a first aspect, the present invention provides a display panel comprising a plurality of light-emitting elements and a plurality of microlenses located on light-emitting sides of the light-emitting elements, wherein the microlenses are arranged corresponding to the light-emitting elements;

[0006] In the correspondingly arranged light-emitting element and microlens, the microlens includes a bottom surface on a side close to the light-emitting element and a dimming curved surface located on a side of the bottom surface away from the light-emitting element; the bottom surface includes a bottom center, and the dimming curved surface includes a highest point; along a first direction, a distance between the highest point and the bottom surface is a first distance, and the first distance is greater than a distance between any other position on the dimming curved surface and the bottom surface; the first direction is a thickness direction of the display panel;

[0007] The distance between the orthographic projection of the highest point position on the bottom surface and the center of the bottom surface is a second distance, and the second distance is positively correlated with the first distance.

[0008] Optionally, the distance between the light emitting element and the center of the display panel is a third distance;

[0009] The first distance is positively correlated with the third distance.

[0010] Optionally, the plurality of light-emitting elements include a first light-emitting element and a second light-emitting element, and the plurality of microlenses include a first microlens and a second microlens, the first microlens is located on a light-emitting surface of the first light-emitting element, and the second microlens is located on a light-emitting surface of the second light-emitting element;

[0011] The first microlens includes a first bottom surface on a side close to the first light-emitting element and a first dimming curved surface on a side of the first bottom surface away from the first light-emitting element; the first bottom surface includes a first bottom surface center, and the first dimming curved surface includes a first apex position; along the first direction, a distance between the first apex position and the first bottom surface is a first distance A, and the first distance A is greater than a distance between any other position on the first dimming curved surface and the first bottom surface; a distance between an orthographic projection of the first apex position on the first bottom surface and the center of the first bottom surface is a second distance A;

[0012] The second microlens includes a second bottom surface on a side close to the second light-emitting element and a second dimming curved surface on a side of the second bottom surface away from the second light-emitting element; the second bottom surface includes a second bottom surface center, and the second dimming curved surface includes a second highest point; along the first direction, the distance between the second highest point and the second bottom surface is a first B distance, and the first B distance is greater than the distance between any other position on the second dimming curved surface and the second bottom surface; the distance between the orthographic projection of the second highest point on the second bottom surface and the center of the second bottom surface is a second B distance;

[0013] The distance between the first light emitting element and the center of the display panel is greater than the distance between the second light emitting element and the center of the display panel, the first distance A is greater than the first distance B, and the second distance A is greater than the second distance B.

[0014] Optionally, along a direction from the display panel to an edge of the display panel, a plurality of the first distances in the plurality of microlenses gradually increase, and a plurality of the second distances gradually increase.

[0015] Optionally, along the first direction, the orthographic projection of the highest point position on the bottom surface is located within the coverage range of the bottom surface.

[0016] Optionally, the bottom surfaces of any two of the microlenses have the same area.

[0017] Optionally, the display panel further includes a driving substrate, an encapsulation layer and a color resist layer, the color resist layer includes a plurality of color resist units, and the color resist units are arranged corresponding to the light emitting elements;

[0018] Along the first direction, the light emitting element is located on one side of the driving substrate and is electrically connected to the driving substrate;

[0019] The encapsulation layer is located on a side of the light emitting element away from the driving substrate;

[0020] The color resist layer is located on a side of the encapsulation layer away from the light emitting element;

[0021] The microlens is located on a side of the color resist layer away from the encapsulation layer.

[0022] Optionally, the plurality of color resist units include a first color resist unit, a second color resist unit and a third color resist unit;

[0023] The multiple light-emitting elements include a first color light-emitting element, a second color light-emitting element and a third color light-emitting element; along the first direction, the first color color resist unit is located on the light-emitting side of the first color light-emitting element, the second color color resist unit is located on the light-emitting side of the second color light-emitting element, and the third color color resist unit is located on the light-emitting side of the third color light-emitting element; or, the multiple light-emitting elements include white light-emitting elements, and along the first direction, the first color color resist unit, the second color color resist unit and the third color color resist unit are respectively located on the light-emitting sides of different white light-emitting elements.

[0024] Optionally, the light-emitting element includes a micro organic light-emitting element.

[0025] In a second aspect, the present invention further provides a display device comprising any one of the display panels described above.

[0026] The display panel provided by an embodiment of the present invention adjusts the brightness of the display panel at a wide viewing angle by setting the highest point of the microlens to be offset from the center of the bottom surface, and setting the highest point to be tilted toward the center of the bottom surface away from the center of the display panel. By changing the tilt of the microlens, the position of the center of curvature of the microlens surface is changed, so that the direction of the main optical axis of the light passing through the microlens changes. In this way, the brightness of the display panel at a wide viewing angle can be adjusted, thereby improving the light extraction efficiency at a wide viewing angle from the side. In addition, by adjusting the maximum thickness of the microlens, the maximum thickness of the microlens is set to be positively correlated with the offset of the highest point of the microlens, that is, the radius of curvature of the microlens surface is changed. The thicker the microlens, the smaller the radius of curvature, the shorter the focal length, and the stronger the light refraction ability. This further adjusts the light emission direction of the light-emitting element at a wide viewing angle, improves the light emission brightness at a wide viewing angle, ensures the overall display brightness of the display panel is balanced, solves the problem of color deviation in side view, and makes the display panel have higher light extraction efficiency, more uniform light distribution, more stable picture quality, and improves the user experience. Furthermore, the horizontal offset of the highest point is positively correlated with the height of the highest point, thereby preventing the height of the highest point from limiting the offset of the highest point. This ensures greater freedom in adjusting the shape of the dimming curved surface and reduces the difficulty of preparing the microlens. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a structural diagram of a display panel in the related art;

[0028] Figure 2 is a schematic structural diagram of a display panel provided by an embodiment of the present invention;

[0029] Figure 3 is a structural diagram of another display panel provided by an embodiment of the present invention;

[0030] Figure 4 is a structural diagram of another display panel provided by an embodiment of the present invention;

[0031] Figure 5 is a structural diagram of another display panel provided by an embodiment of the present invention;

[0032] Figure 6 It is a structural schematic diagram of a display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0033] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0034] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. It should be noted that the directional words such as "upper", "lower", "left", and "right" described in the embodiments of the present invention are described based on the angles shown in the accompanying drawings and should not be understood as limiting the embodiments of the present invention. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is formed "on" or "under" another element, it can not only be formed directly "on" or "under" another element, but can also be formed indirectly "on" or "under" another element through an intermediate element. The terms "first", "second", etc. are only used for descriptive purposes and do not indicate any order, quantity or importance, but are only used to distinguish different components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] The term "including" and its variations used in the present invention are open inclusions, that is, "including but not limited to." The term "based on" means "based at least in part on." The term "one embodiment" means "at least one embodiment."

[0036] It should be noted that the concepts such as "first" and "second" mentioned in the present invention are only used to distinguish the corresponding contents, and are not used to limit the order or mutual dependence.

[0037] It should be noted that the modifications of "one" and "multiple" mentioned in the present invention are illustrative rather than restrictive. Those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0038] Figure 1 This is a schematic diagram of the structure of a display panel in the related art, such as Figure 1 As shown, the display panel in the related art includes a plurality of light emitting elements 10' and a plurality of micro lenses 20' located on the light emitting side of the light emitting elements 10', and the light emitted by the light emitting elements 10' is adjusted by the micro lenses 20' to be emitted along the direction of the optical axis of the micro lenses 20'. Figure 1 In the structure shown, the micro lenses 20 ′ all have the same structure, which cannot satisfy the adjustment of the light emission characteristics of the micro lenses 20 ′ located in different areas.

[0039] Based on this, an embodiment of the present invention provides a display panel, which includes a plurality of light-emitting elements and a plurality of microlenses located on the light-emitting sides of the light-emitting elements, wherein the microlenses are arranged correspondingly to the light-emitting elements; in the corresponding light-emitting elements and microlenses, the microlenses include a bottom surface on a side close to the light-emitting elements and a dimming curved surface on a side of the bottom surface away from the light-emitting elements; the bottom surface includes a bottom center, and the dimming curved surface includes a highest point position; along a first direction, the distance between the highest point position and the bottom surface is a first distance, and the first distance is greater than the distance between any other position on the dimming curved surface and the bottom surface; the first direction is the thickness direction of the display panel; the distance between the orthographic projection of the highest point position on the bottom surface and the bottom surface center is a second distance, and the second distance is positively correlated with the first distance. Using the above technical solution, by setting the position of the highest point of the microlens, the position of the center of curvature of the microlens surface is changed, so that the main optical axis direction of the light passing through the microlens is changed, thereby adjusting the light output brightness of the display panel at a wide viewing angle, meeting the user's brightness requirements under a wide viewing angle state, and improving the user experience. At the same time, the thickness of the microlens is further adjusted, and the thickness of the microlens is set to be positively correlated with the degree of offset of the highest point position of the microlens, that is, the curvature radius of the microlens surface is changed. The thicker the microlens, the smaller the curvature radius, the shorter the focal length, and the stronger the light refraction ability. The light output direction of the light-emitting element at a wide viewing angle is further adjusted, and the light output brightness at a wide viewing angle is improved, thereby ensuring the overall display brightness of the display panel is balanced and improving the display effect of the display panel.

[0040] The above is the core concept of the present invention. The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0041] Specifically, Figure 2 is a schematic structural diagram of a display panel provided by an embodiment of the present invention, with reference to Figure 2The display panel includes a plurality of light-emitting elements 10 and a plurality of microlenses 20 located on the light-emitting side of the light-emitting elements 10, the microlenses 20 being arranged corresponding to the light-emitting elements 10; in the correspondingly arranged light-emitting elements 10 and microlenses 20, the microlenses 20 include a bottom surface 201 on a side close to the light-emitting element 10 and a dimming curved surface 202 located on a side of the bottom surface 201 away from the light-emitting element 10; the bottom surface 201 includes a bottom surface center 2011, and the dimming curved surface 202 includes a highest point position 2021; along a first direction (the X direction as shown in the figure), the distance between the highest point position 2021 and the bottom surface 201 is a first distance L1, and the first distance L1 is greater than the distance between any other position of the dimming curved surface 202 and the bottom surface 201; the first direction (the X direction as shown in the figure) is the thickness direction of the display panel; the distance between the orthographic projection 2021' of the highest point position 2021 on the bottom surface 201 and the bottom surface center 2011 is a second distance L2, and the second distance L2 is positively correlated with the first distance L1.

[0042] For example, Figure 2 As shown, the display panel includes a plurality of light-emitting elements 10 and a plurality of microlenses 20. Along the thickness direction of the display panel (the X direction shown in the figure), the microlenses 20 cover the light-emitting elements 10. In this way, the light emitted by the light-emitting elements 10 can be modulated by the microlenses 20 and then emitted. The light-emitting direction and light-emitting area of ​​the light-emitting elements 10 are adjusted by the microlenses 20, thereby improving the light-emitting effect of the display panel. Furthermore, the microlens 20 is set corresponding to the light-emitting element 10. The corresponding setting here can be understood as a one-to-one setting, that is, a microlens 20 is set on the light-emitting side of each light-emitting element 10; or, it can also be understood as a many-to-one setting, that is, a plurality of microlenses 20 are set on the light-emitting side of a light-emitting element 10, and the plurality of microlenses 20 work together to achieve the adjustment of the light-emitting direction and light-emitting area of ​​the same light-emitting element 10, and achieve fine adjustment of the light-emitting effect; or, it can also be a one-to-many setting, that is, a microlens 20 is set on the light-emitting side of multiple light-emitting elements 10, that is, the same microlens 20 is used to simultaneously adjust the light-emitting direction and light-emitting area of ​​multiple light-emitting elements 10, so that the setting method of the microlens 20 is simple. The embodiment of the present invention does not limit the correspondence between the light-emitting element 10 and the microlens 20, Figure 2 The description is made by taking the light emitting element 10 and the micro lens 20 as an example in which they are arranged in a one-to-one correspondence.

[0043] For further reference, Figure 2The microlens 20 includes a bottom surface 201 and a dimming curved surface 202 that is convex along the thickness direction of the display panel. Light output can be adjusted by adjusting the surface shape of the dimming curved surface 202. Specifically, each microlens 20 includes a bottom surface 201 on a side close to the display panel and a dimming curved surface 202 located on a side of the bottom surface 201 away from the display panel. The bottom surface 201 includes a bottom center 2011. The dimming curved surface 202 includes a highest point 2021. The distance between the highest point 2021 and the bottom surface 201 is a first distance L1. The first distance L1 is greater than the distance between any other position on the dimming curved surface 202 and the bottom surface 201. The distance between an orthographic projection 2021′ of the highest point 2021 on the bottom surface 201 and the bottom center 2011 is a second distance L2. The second distance L2 is positively correlated with the first distance L1. That is, the degree of offset of the highest point 2021 from the bottom center 2011 is positively correlated with the height of the highest point 2021. In other words, the farther the highest point 2021 of the dimming curved surface 202 is from the bottom surface 201, that is, the greater the first distance L1, the greater the second distance L2.

[0044] In the multiple microlenses 20 provided in the embodiments of the present invention, by changing the position of the apex 2021, that is, by setting the orthographic projection 2021' of the apex 2021 on the bottom surface 201 to be offset from the bottom surface center 2011, the apex 2021 is offset from the center to the periphery relative to the bottom surface center 2011, specifically toward the edge of the microlens 20, thereby forming an asymmetric microlens 20. This changes the position of the center of curvature of the microlens 20 surface, thereby changing the direction of the principal optical axis of light passing through the microlens 20. This can adjust the brightness of the display panel at a wide viewing angle, meet the user's brightness requirements under wide viewing angle conditions, and enhance the user experience. Furthermore, in the display panel provided in the embodiments of the present invention, in addition to adjusting the horizontal offset of the apex 2021, the height of the apex 2021 is further adjusted, that is, the maximum thickness of the microlens 20 is adjusted. This changes the radius of curvature of the dimming curved surface 202 of the microlens 20. The thicker the maximum thickness of the microlens 20, the smaller the radius of curvature, the shorter the focal length, and the stronger its light refraction ability. This further adjusts the light emission direction of the light-emitting element at wide viewing angles, improving the brightness of the light at wide viewing angles, ensuring balanced brightness across the display panel and enhancing the display quality. Furthermore, the horizontal offset of the highest point 2021 is positively correlated with the height of the highest point 2021. In other words, the second distance L2 is positively correlated with the first distance L1. This ensures greater freedom in adjusting the shape of the dimming curved surface 202, reducing the difficulty in manufacturing the microlens 20.

[0045] In summary, the display panel provided by the embodiment of the present invention, by setting the highest point position of the microlens to be offset from the center of the bottom surface, setting the highest point position to be tilted toward the center of the bottom surface away from the center of the display panel, and by changing the degree of inclination of the microlens, thereby changing the position of the center of curvature of the microlens surface, the direction of the main optical axis of the light passing through the microlens is changed. In this way, the light output brightness of the display panel at a wide viewing angle can be adjusted, thereby improving the light output efficiency at a wide viewing angle from the side. In addition, by adjusting the maximum thickness of the microlens, the maximum thickness of the microlens is set to be positively correlated with the degree of offset of the highest point position of the microlens, that is, the curvature radius of the microlens surface is changed. The thicker the microlens, the smaller the curvature radius, the shorter the focal length, and the stronger the refractive power of light. The light output direction of the light-emitting element at a wide viewing angle is further adjusted, the light output brightness at a wide viewing angle is improved, and the overall display brightness of the display panel is balanced, thereby solving the problem of color deviation in side view. The light output efficiency of the display panel is higher, the light distribution is more uniform, the picture quality is more stable, and the user experience is improved. Furthermore, the horizontal offset of the highest point is positively correlated with the height of the highest point, thereby preventing the height of the highest point from limiting the offset of the highest point. This ensures greater freedom in adjusting the shape of the dimming curved surface and reduces the difficulty of preparing the microlens.

[0046] Optionally, the distance between the light emitting element 10 and the center of the display panel is a third distance L3; the first distance L1 is positively correlated with the third distance L3.

[0047] Continue to refer Figure 2 , the distance between a single light-emitting element 10 and the geometric center of the display panel is a third distance L3. The closer the light-emitting element 10 is to the center of the display panel, the smaller L3 is; the closer to the edge of the display panel, the larger L3 is. In addition, the distance between the light-emitting element 10 and the center of the display panel can be understood as the image height of the light-emitting element 10, that is, the closer the light-emitting element 10 is to the center of the display panel, the smaller the image height is; the closer to the edge of the display panel, the larger the image height is. In addition, the light-emitting element with a larger image height has a larger color deviation of its light output. In an embodiment of the present invention, the first distance L1 is set to be positively correlated with the third distance L3, that is, the closer the light-emitting element 10 is to the edge of the display panel, the larger L3 is, the corresponding thickness of the microlens 20 is greater, that is, the larger L1 is, and the vertical projection of the highest point position 2021 in the dimming curve 202 on the bottom surface 201 deviates more from the bottom surface center 2011. By configuring the edge light-emitting element 10 with a thicker microlens 20 and a larger offset of the highest point position 2021, the microlens with a larger offset of the highest point position 2021 can have a greater modulation effect on the light emitted in the direction of the main optical axis, and the thick lens has a smaller curvature radius and a shorter focal length, so it has a stronger refractive ability, which can compensate for the color deviation of the side viewing angle, improve the light output efficiency of the edge area, and thus make the light distribution of the display panel more uniform, thereby improving the user experience.

[0048] Optional, Figure 3 is a schematic diagram of the structure of another display panel provided by an embodiment of the present invention, referring to Figure 3 The plurality of light-emitting elements 10 include a first light-emitting element 11 and a second light-emitting element 12. The plurality of microlenses 20 include a first microlens 21 and a second microlens 22. The first microlens 21 is located on the light-emitting surface of the first light-emitting element 11, and the second microlens 22 is located on the light-emitting surface of the second light-emitting element 12. The first microlens 21 includes a first bottom surface 211 on a side close to the first light-emitting element 11 and a first dimming curved surface 212 on a side of the first bottom surface 211 away from the first light-emitting element 11. The first bottom surface 211 includes a first bottom surface center 2111, and the first dimming curved surface 212 includes a first highest point 2121. Along a first direction, the distance between the first highest point 2121 and the first bottom surface 211 is a first distance A, L11, which is greater than the distance between any other position on the first dimming curved surface 212 and the first bottom surface 211. The distance between the orthographic projection 2121' of the first highest point 2121 on the first bottom surface 211 and the first bottom surface center 2111 is a second distance A, L21. The second microlens 22 includes a second bottom surface 221 on a side close to the second light-emitting element 12, and a second dimming curved surface 222 located on a side of the second bottom surface 221 away from the second light-emitting element 12. The second bottom surface 221 includes a second bottom surface center 2211, and the second dimming curved surface 222 includes a second highest point 2221. Along the first direction, the distance between the second highest point 2221 and the second bottom surface 221 is a first B distance L12, which is greater than the distance between any other position on the second dimming curved surface 222 and the second bottom surface 221. The distance between the orthographic projection 2221' of the second highest point 2221 on the second bottom surface 221 and the second bottom surface center 2211 is a second B distance L22.

[0049] The distance between the first light emitting element 11 and the center of the display panel is greater than the distance between the second light emitting element 12 and the center of the display panel. The first distance A L11 is greater than the first distance B L12. The second distance A L21 is greater than the second distance B L22.

[0050] Among them, the multiple light-emitting elements 10 include a first light-emitting element 11 and a second light-emitting element 12, and the multiple microlenses 20 include a first microlens 21 and a second microlens 22. The first microlens 21 is located on the light-emitting surface of the first light-emitting element 11, that is, the first microlens 21 covers the first light-emitting element 11, and is used to adjust the light-emitting direction and light-emitting area of ​​the first light-emitting element 11; the second microlens 22 is located on the light-emitting surface of the second light-emitting element 12, that is, the second microlens 22 covers the second light-emitting element 12, and is used to adjust the light-emitting direction and light-emitting area of ​​the second light-emitting element 12.

[0051] Furthermore, the first microlens 21 includes a first bottom surface 211 on a side close to the first light-emitting element 11 and a first dimming curved surface 212 on a side of the first bottom surface 211 away from the first light-emitting element 11; the first bottom surface 211 includes a first bottom surface center 2111, and the first dimming curved surface 212 includes a first highest point position 2121; along the first direction, the distance between the first highest point position 2121 and the first bottom surface 211 is a first A distance L11, and the first A distance L11 is greater than the first dimming curved surface 212. The distance between any other position and the first bottom surface 211; and, the orthographic projection 2121' of the first highest point position 2121 on the first bottom surface 211 is staggered with the center 2111 of the first bottom surface, that is, the first highest point position 2121 is offset relative to the center 2111 of the first bottom surface, and the specific offset direction is toward the edge of the display panel. At this time, the distance between the orthographic projection 2121' of the first highest point position 2121 on the first bottom surface 211 and the center 2111 of the first bottom surface is the second A distance L21. The second microlens 22 includes a second bottom surface 221 on a side proximal to the second light-emitting element 12, and a second dimming curved surface 222 on a side of the second bottom surface 221 away from the second light-emitting element 12. The second bottom surface 221 includes a second bottom surface center 2211, and the second dimming curved surface 222 includes a second apex 2221. Along the first direction, the distance between the second apex 2221 and the second bottom surface 221 is a first B distance L12, which is greater than the distance between any other position on the second dimming curved surface 222 and the second bottom surface 221. Furthermore, an orthographic projection 2221′ of the second apex 2221 on the second bottom surface 221 is offset from the second bottom surface center 2211, i.e., the second apex 2221 is offset relative to the second bottom surface center 2211, specifically toward an edge of the display panel. In this case, the distance between the orthographic projection 2221′ of the second apex 2221 on the second bottom surface 221 and the second bottom surface center 2211 is a second B distance L22.

[0052] Furthermore, the distance between the first light-emitting element 11 and the center of the display panel is greater than the distance between the second light-emitting element 12 and the center of the display panel, that is, the first light-emitting element 11 is farther from the center of the display panel, and the second light-emitting element 12 is closer to the center of the display panel. The first A distance L11 is greater than the first B distance L12, and the second A distance L21 is greater than the second B distance L22, that is, the first highest point position 2121 of the first dimming surface 212 is farther from the first bottom surface 211, and the distance between the orthographic projection 2121' of the first highest point position 2121 on the first bottom surface 211 and the center 2111 of the first bottom surface is farther, and the degree of offset is greater. The first microlens 21 and the second microlens 22 are offset as a whole toward the side away from the center of the display panel, that is, they are tilted toward the direction of a large viewing angle, and the degree of offset of the first microlens 21 is greater. Figure 3The arrow above the middle microlens 20 indicates the direction of the principal optical axis of the light passing through the microlens 20. The greater the change in the principal optical axis direction of the light refracted by the first microlens 21, the stronger the ability to improve color deviation at a wide viewing angle, thereby improving the light extraction efficiency in the edge area, making the display effect of the display panel more balanced and the user's viewing experience better.

[0053] Optionally, along a direction from the display panel to the edge of the display panel, the first distances L1 in the microlenses 20 gradually increase, and the second distances L2 gradually increase.

[0054] It can be understood that the closer to the edge area of ​​the display panel, the first distance L1 of the microlens 20 gradually increases, and the second distance L2 gradually increases. That is, the height of the highest point position 2021 gradually increases, and the offset degree of the highest point position 2021 compared to the bottom center 2011 gradually increases. Such a setting can make the direction along the display panel pointing to the edge of the display panel, the thicker the microlens 20, the smaller the curvature radius, the shorter the focal length, and the stronger the light refraction ability. It further adjusts the light output direction of the light-emitting element at a wide viewing angle, improves the light output brightness at a wide viewing angle, ensures the overall display brightness of the display panel is balanced, can effectively compensate for the brightness loss at the edge of the display panel, improves the brightness consistency of the entire area, and enhances the user experience.

[0055] Optionally, along the first direction, an orthographic projection 2021 ′ of the highest point position 2021 on the bottom surface 201 is located within the coverage range of the bottom surface 201 .

[0056] Light originates from light-emitting element 10, passes through bottom surface 201, enters microlens 20, and then, after being refracted at apex 2021, exits in the direction of the compensated side viewing angle. If the orthographic projection 2021' of apex 2021 on bottom surface 201 exceeds the coverage area of ​​bottom surface 201, the light refracted at apex 2021 will be scattered into the adjacent microlens 20 area due to the small coverage area of ​​bottom surface 201, and absorbed by other structures, resulting in reduced light extraction efficiency. This design ensures that the direction of light emitted from the outermost light-emitting element 10 through microlens 20 does not exceed the coverage area of ​​the display panel, ensuring consistent display across the entire viewing angle of the display panel.

[0057] Optionally, the bottom surfaces 201 of any two microlenses 20 have the same area.

[0058] The same bottom surface 201 area ensures that the light emission range of each microlens 20 corresponding to the light-emitting element 10 is consistent. Regardless of whether the microlens 20 is located at the center or the edge of the display panel, the receiving area and incident angle of light entering the microlens 20 are consistent. This allows for precise compensation on a uniform basis when adjusting the offset degree and height of the highest point position 2021. In addition, the regularly arranged microlenses 20 correspond to the regularly arranged light-emitting elements 10. The same bottom surface 201 area ensures that the gaps and relative positions between the microlenses 20 are consistent, which is beneficial for improving the brightness and color uniformity of the display panel.

[0059] Optional, Figure 4 This is a schematic diagram of the structure of another display panel provided by an embodiment of the present invention, referring to Figure 4 The display panel further includes a driving substrate 30, an encapsulation layer 40 and a color resist layer 50. The color resist layer 50 includes a plurality of color resist units 51. The color resist units 51 are arranged corresponding to the light-emitting elements 10. Along the first direction, the light-emitting element 10 is located on one side of the driving substrate 30 and is electrically connected to the driving substrate 30. The encapsulation layer 40 is located on a side of the light-emitting element 10 away from the driving substrate 30. The color resist layer 50 is located on a side of the encapsulation layer 40 away from the light-emitting element 10. The microlens 20 is located on a side of the color resist layer 50 away from the encapsulation layer 40.

[0060] The driver substrate 30 provides electrical signals to the light-emitting elements 10, determining the light-emitting duration and power of each light-emitting element 10. Furthermore, as the bottom layer of the entire display panel, the driver substrate 30 supports the light-emitting elements 10, the encapsulation layer 40, the color resist layer 50, and the microlenses 20, ensuring the stability of the display panel. Furthermore, the driver substrate 30 may be a CMOS board, which is not limited in this embodiment of the present invention.

[0061] The encapsulation layer 40 is located on the side of the light-emitting element 10 away from the driver substrate 30, and between the light-emitting element 10 and the color-resist layer 50. It isolates the light-emitting element 10 from moisture and oxygen, protecting the stability of the light-emitting element 10. It also prevents light from the light-emitting element 10 from directly entering the color-resist layer 50, thus preventing stray light interference. Furthermore, the encapsulation layer 40 can include a thin film encapsulation layer, such as a laminated structure comprising an inorganic encapsulation layer, an organic encapsulation layer, and an inorganic encapsulation layer, to ensure the encapsulation effect of the encapsulation layer 40.

[0062] The color resist layer 50 can improve the color purity of the emitted light and enhance the display effect of the display panel.

[0063] Optional, Figure 5 This is a schematic diagram of the structure of another display panel provided by an embodiment of the present invention, referring to Figure 5, the multiple color resist units 51 include a first color color resist unit 511, a second color color resist unit 512 and a third color color resist unit 513; the multiple light-emitting elements 10 include a first color light-emitting element 13, a second color light-emitting element 14 and a third color light-emitting element 15; along the first direction, the first color color resist unit 511 is located on the light-emitting side of the first color light-emitting element 13, the second color color resist unit 512 is located on the light-emitting side of the second color light-emitting element 14, and the third color color resist unit 513 is located on the light-emitting side of the third color light-emitting element 15; or, the multiple light-emitting elements 10 include white light-emitting elements, and along the first direction, the first color color resist unit 511, the second color color resist unit 512 and the third color color resist unit 513 are respectively located on the light-emitting sides of different white light-emitting elements.

[0064] The plurality of light-emitting elements 10 include white light-emitting elements, i.e., the white light-emitting elements 10 emit white light, which passes through the first color resist unit 511, the second color resist unit 512, and the third color resist unit 513 of different colors along a first direction, and then emits light of different colors, which can be red, green, and blue, respectively, to achieve a color display effect of the display panel. Alternatively, the first color resist unit 511, the second color resist unit 512, and the third color resist unit 513 can emit light of different colors, and the light of different colors of the light source passes through the first color resist unit 511, the second color resist unit 512, and the third color resist unit 513, respectively, to further improve the color purity of the emitted light and enhance the display effect of the display panel.

[0065] Optionally, the light emitting element 10 includes a micro organic light emitting element.

[0066] Exemplarily, the light-emitting element 10 includes a micro organic light-emitting element, such as a Micro OLED. As the light-emitting element 10, it can eliminate the need for a backlight source due to its self-luminous characteristics, reduce the thickness and volume of the display panel, and adapt to different display devices. Micro OLED has high brightness, high contrast and high resolution. As the light-emitting element 10, it can improve the display effect of the display panel and enhance the user experience.

[0067] Based on the same inventive concept, an embodiment of the present invention further provides a display device, Figure 6 is a schematic structural diagram of a display device provided by an embodiment of the present invention, with reference to Figure 6The display device 60 may specifically be an augmented reality (AR) display device, a virtual reality (VR) display device, a mobile phone, a computer, or a television, and other electronic display devices, but this is not limited in the present embodiment. The display device 60 includes the display panel of any embodiment of the present invention. Therefore, the display device 60 of the present embodiment has the technical features of the display panel provided in any embodiment of the present invention and can achieve the beneficial effects of the display panel provided in any embodiment of the present invention. The similarities can be referred to the above description and will not be repeated here.

[0068] Note that the above are only preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, combinations, and substitutions are possible for those skilled in the art without departing from the scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the scope of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A display panel, characterized in that: It comprises a plurality of light-emitting elements and a plurality of micro lenses located on the light-emitting side of the light-emitting elements, wherein the micro lenses are arranged corresponding to the light-emitting elements; In the correspondingly arranged light-emitting element and microlens, the microlens includes a bottom surface on a side close to the light-emitting element and a dimming curved surface located on a side of the bottom surface away from the light-emitting element; the bottom surface includes a bottom center, and the dimming curved surface includes a highest point; along a first direction, a distance between the highest point and the bottom surface is a first distance, and the first distance is greater than a distance between any other position on the dimming curved surface and the bottom surface; the first direction is a thickness direction of the display panel; The distance between the orthographic projection of the highest point position on the bottom surface and the center of the bottom surface is a second distance, and the second distance is positively correlated with the first distance.

2. The display panel according to claim 1, wherein: The distance between the light emitting element and the center of the display panel is a third distance; The first distance is positively correlated with the third distance.

3. The display panel according to claim 2, wherein: The plurality of light-emitting elements include a first light-emitting element and a second light-emitting element, the plurality of microlenses include a first microlens and a second microlens, the first microlens is located on a light-emitting surface of the first light-emitting element, and the second microlens is located on a light-emitting surface of the second light-emitting element; The first microlens includes a first bottom surface on a side close to the first light-emitting element and a first dimming curved surface on a side of the first bottom surface away from the first light-emitting element; the first bottom surface includes a first bottom surface center, and the first dimming curved surface includes a first apex position; along the first direction, a distance between the first apex position and the first bottom surface is a first distance A, and the first distance A is greater than a distance between any other position on the first dimming curved surface and the first bottom surface; a distance between an orthographic projection of the first apex position on the first bottom surface and the center of the first bottom surface is a second distance A; The second microlens includes a second bottom surface on a side close to the second light-emitting element and a second dimming curved surface on a side of the second bottom surface away from the second light-emitting element; the second bottom surface includes a second bottom surface center, and the second dimming curved surface includes a second highest point; along the first direction, the distance between the second highest point and the second bottom surface is a first B distance, and the first B distance is greater than the distance between any other position on the second dimming curved surface and the second bottom surface; the distance between the orthographic projection of the second highest point on the second bottom surface and the center of the second bottom surface is a second B distance; The distance between the first light emitting element and the center of the display panel is greater than the distance between the second light emitting element and the center of the display panel, the first distance A is greater than the first distance B, and the second distance A is greater than the second distance B.

4. The display panel according to claim 3, wherein: Along a direction from the display panel to an edge of the display panel, the first distances of the microlenses gradually increase, and the second distances gradually increase.

5. The display panel according to claim 1, wherein: Along the first direction, the orthographic projection of the highest point position on the bottom surface is located within the coverage range of the bottom surface.

6. The display panel according to claim 1, wherein: The bottom surfaces of any two of the microlenses have the same area.

7. The display panel according to claim 1, wherein: The display panel further includes a driving substrate, an encapsulation layer and a color resist layer, wherein the color resist layer includes a plurality of color resist units, and the color resist units are arranged corresponding to the light emitting elements; Along the first direction, the light emitting element is located on one side of the driving substrate and is electrically connected to the driving substrate; The encapsulation layer is located on a side of the light emitting element away from the driving substrate; The color resist layer is located on a side of the encapsulation layer away from the light emitting element; The microlens is located on a side of the color resist layer away from the encapsulation layer.

8. The display panel according to claim 7, wherein: The plurality of color resist units include a first color resist unit, a second color resist unit and a third color resist unit; The multiple light-emitting elements include a first color light-emitting element, a second color light-emitting element and a third color light-emitting element; along the first direction, the first color color resist unit is located on the light-emitting side of the first color light-emitting element, the second color color resist unit is located on the light-emitting side of the second color light-emitting element, and the third color color resist unit is located on the light-emitting side of the third color light-emitting element; or, the multiple light-emitting elements include white light-emitting elements, and along the first direction, the first color color resist unit, the second color color resist unit and the third color color resist unit are respectively located on the light-emitting sides of different white light-emitting elements.

9. The display panel according to claim 1, wherein: The light emitting element includes a micro organic light emitting element.

10. A display device, characterized in that: The display panel comprises the display panel according to any one of claims 1 to 9.

Images