Display panel and display device

Abstract

The invention provides a display panel and a display device, the display panel comprises a substrate, a light-emitting functional layer, a first light shielding layer, a second light shielding layer and a plurality of light filtering units, the light-emitting functional layer is arranged on one side of the substrate, and the light-emitting functional layer comprises a plurality of light-emitting units arranged at intervals; the first shading layer is arranged on the side, away from the substrate, of the light-emitting functional layer, the first shading layer comprises a plurality of first openings, and the orthographic projection of the first openings on the substrate and the orthographic projection of the corresponding light-emitting units on the substrate are at least partially overlapped; the second light shielding layer is arranged between the light-emitting functional layer and the first light shielding layer, and the second light shielding layer comprises a plurality of second openings; the light filtering units and the first light shielding layer are located on the same layer, at least part of the light filtering units are located in the corresponding first openings, and the light filtering units are used for allowing light with the same light emitting color as the corresponding light emitting units to penetrate. The display panel provided by the invention can adopt a combined structure of the first light shielding layer, the second light shielding layer and the light filtering unit, and can prevent peeping and light leakage.

Description

Technical Field

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

[0002] As users have higher and higher demands for the experience of electronic products, various display products have emerged. In order to protect the privacy of users, the importance of anti-peeping display technology has become increasingly prominent. For example, in terms of in-vehicle display, the driver's seat needs to be vertically anti-peeping to suppress light pollution and horizontally display normally to ensure operation and viewing. The co-pilot seat and special occasions require all-round anti-peeping to protect privacy, thus there is a demand for the design of dynamic anti-peeping solutions.

[0003] However, current anti-peeping technology has the problem of light leakage. Summary of the invention

[0004] In view of this, the purpose of the present application is to provide a display panel and a display device with anti-peeping and anti-light leakage functions.

[0005] Based on the above purpose, the present application provides a display panel, which includes:

[0006] substrate;

[0007] A light-emitting functional layer is disposed on one side of the substrate, and the light-emitting functional layer includes a plurality of light-emitting units disposed at intervals;

[0008] A first light shielding layer is arranged on a side of the light-emitting functional layer away from the substrate, the first light shielding layer comprises a plurality of first openings, and the orthographic projections of the first openings on the substrate at least partially overlap with the orthographic projections of the corresponding light-emitting units on the substrate;

[0009] A second shading layer is arranged between the light-emitting functional layer and the first shading layer, the second shading layer includes a plurality of second openings, the orthographic projections of the second openings on the substrate at least partially overlap with the orthographic projections of the corresponding light-emitting units on the substrate; and a plurality of filter units, the filter units and the first shading layer are located in the same layer, at least some of the filter units are located in the corresponding first openings, and the filter units are used to allow light with the same luminous color as the corresponding light-emitting unit to pass through.

[0010] In one embodiment, the orthographic projection of the light emitting unit on the substrate is located within the orthographic projection of the first opening on the substrate;

[0011] In a direction perpendicular to the substrate, the distance between the first light shielding layer and the light emitting unit satisfies a first formula:

[0012] H = (D + d) / tanβ;

[0013] Wherein, H represents the distance from the first light shielding layer to the light emitting unit in a direction perpendicular to the substrate, D represents the size of the light emitting unit in a direction parallel to the substrate, d represents the distance between the edge of the orthographic projection of the first opening on the substrate and the edge of the orthographic projection of the corresponding light emitting unit on the substrate, and β represents the emission angle of the light emitting unit;

[0014] Preferably, a distance between an edge of an orthographic projection of the first opening on the substrate and an edge of an orthographic projection of the corresponding light emitting unit on the substrate is 0.5-2 μm;

[0015] Preferably, a size of the filter unit in a direction perpendicular to the substrate is larger than a size of the first light shielding layer in a direction perpendicular to the substrate.

[0016] In one embodiment, the display panel further includes:

[0017] A dielectric layer is at least partially disposed between the light emitting unit and the corresponding light filtering unit:

[0018] The relationship between the emission angle of the light emitting unit and the anti-peeping angle satisfies the second formula:

[0019] β=arcsin(sinα / n);

[0020] Wherein, β represents the emission angle of the light emitting unit in the dielectric layer, n represents the refractive index of the dielectric layer, and α represents the anti-peeping angle.

[0021] In one embodiment, the dielectric layer includes a cushioning layer, and the cushioning layer is disposed between the second light-shielding layer and the first light-shielding layer;

[0022] Preferably, the cushioning layer covers the second light shielding layer and fills the second opening;

[0023] Preferably, the material of the padding layer includes optical glue.

[0024] In one embodiment, the dielectric layer includes a packaging layer, and the packaging layer is disposed between the substrate and the second light shielding layer;

[0025] Preferably, the encapsulation layer covers a plurality of the light-emitting units.

[0026] In one embodiment, the first light shielding layer includes a first light shielding portion, and the first light shielding portion is at least partially located between the plurality of first openings;

[0027] Preferably, the first light shielding portion includes an annular structure enclosing a plurality of the first openings;

[0028] Preferably, the first light shielding portion comprises a black light absorbing material;

[0029] Preferably, the second light shielding layer includes a second light shielding portion, and the second light shielding portion is at least partially located between the plurality of second openings;

[0030] Preferably, the second light shielding portion includes an annular structure enclosing a plurality of the second openings;

[0031] Preferably, the second light shielding portion comprises a black light absorbing material.

[0032] In one embodiment, the plurality of light emitting units include a first light emitting unit, a second light emitting unit and a third light emitting unit that emit light of different colors;

[0033] The filter unit comprises a first filter unit, a second filter unit and a third filter unit, and the first filter unit, the second filter unit and the third filter unit allow different colors of light to pass through;

[0034] Preferably, the color of light allowed to pass through by the first filter unit is the same as the color of light emitted by the corresponding first light emitting unit;

[0035] Preferably, the orthographic projection of the first light emitting unit on the substrate is located within the orthographic projection of the first light filtering unit on the substrate;

[0036] Preferably, the color of light allowed to pass through the second filter unit is the same as the color of light emitted by the corresponding second light emitting unit;

[0037] Preferably, the orthographic projection of the second light emitting unit on the substrate is located within the orthographic projection of the second light filtering unit on the substrate;

[0038] Preferably, the color of light allowed to pass through the third filter unit is the same as the color of light emitted by the corresponding third light emitting unit;

[0039] Preferably, the orthographic projection of the third light emitting unit on the substrate is located within the orthographic projection of the third filter unit on the substrate.

[0040] In one embodiment, in a direction parallel to the substrate, the sizes of the first light emitting unit, the second light emitting unit and the third light emitting unit increase sequentially;

[0041] Preferably, in a direction parallel to the substrate, the sizes of the first filter unit, the second filter unit and the third filter unit increase sequentially;

[0042] Preferably, the first light emitting unit is used to emit red light, the second light emitting unit is used to emit green light, and the third light emitting unit is used to emit blue light;

[0043] Preferably, the first filter unit includes a red filter, the second filter unit includes a green filter, and the third filter unit includes a blue filter.

[0044] In one embodiment, the display panel further includes:

[0045] A planarization layer, disposed on a side of the first light shielding layer away from the substrate;

[0046] Preferably, the planarization layer covers the first light shielding layer and the light filtering unit.

[0047] Based on the same inventive concept, the present application also provides a display device, which includes any of the display panels described above.

[0048] Compared with the prior art, the display panel provided by the present application adopts a combined structure of a first light shielding layer, a second light shielding layer and a filter unit. The filter unit is located at the opening position of the first light shielding layer and corresponds to the position of the light emitting unit. The physical shielding ability of light is enhanced by the double-layer light shielding layer, and the optical performance of light is further optimized by utilizing the selective absorption and transmission characteristics of light by the filter unit, reducing the probability of crosstalk or color mixing between light emitting units of different colors. This combined structure can fully combine the physical light shielding advantages of the multi-layer filter layer and the optical optimization characteristics of the filter unit, can cope with more complex and serious light leakage situations, can achieve good anti-peeping effect and anti-light leakage function, thereby improving the display quality and visual experience of the display panel and meeting the privacy protection needs of different scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the technical solutions in the present application or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0050] Figure 1 It is a structural schematic diagram of a display panel in the related art;

[0051] Figure 2 A schematic diagram of the optical path of a display panel provided in one embodiment of the present application;

[0052] Figure 3 A schematic diagram of parameters of a first formula and a second formula in a display panel provided in an embodiment of the present application;

[0053] Figure 4 A schematic diagram of the structure of a display panel provided in another embodiment of the present application.

[0054] Marking Description:

[0055] 100. Display panel; 1. Substrate; 2. Light-emitting functional layer; 20. Light-emitting unit; 21. First light-emitting unit; 22. Second light-emitting unit; 23. Third light-emitting unit; 3. First shading layer; 30. First shading portion; 31. First opening; 40. Filter unit; 41. First filter unit; 42. Second filter unit; 43. Third filter unit; 5. Second shading layer; 50. Second shading portion; 51. Second opening; 6. Encapsulation layer; 7. Padding layer; 8. Planarization layer; 9. Dielectric layer. DETAILED DESCRIPTION

[0056] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0057] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be the usual meanings understood by people with ordinary skills in the field to which the present application belongs. The "first", "second" and similar words used in the embodiments of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0058] like Figure 1 As shown, in the related art, the display panel 100 includes a substrate 1 and a light-emitting functional layer 2, an encapsulation layer 6 and a first shading layer 3 stacked in sequence on the substrate 1, the light-emitting functional layer 2 includes a plurality of light-emitting units 20, the first shading layer 3 includes a plurality of first openings 31, and the first openings 31 are arranged corresponding to the light-emitting units 20.

[0059] The inventor of the present application has found through research that the light emitted by the light emitting unit 20 is mainly emitted outward from the corresponding first opening 31, and part of the light will leak out from the first opening 31 corresponding to the adjacent light emitting unit 20, which is prone to light leakage. Therefore, the related technology is insufficient in preventing light leakage, thereby affecting the anti-peeping effect.

[0060] In some related technologies, a multi-layer shading layer is used to further block possible light leakage. However, the structure of the multi-layer shading layer is still difficult to cope with more complex and serious light leakage situations.

[0061] Based on this, the present application provides a solution for a display panel to solve the above problems, with specific reference to the following embodiments.

[0062] like Figure 2 As shown, an embodiment of the present application provides a display panel, wherein the display panel 100 includes a substrate 1, a light-emitting functional layer 2, a first light-shielding layer 3, a second light-shielding layer 5, and a plurality of filter units 40. The light-emitting functional layer 2 is disposed on one side of the substrate 1, and the light-emitting functional layer 2 includes a plurality of light-emitting units 20 disposed at intervals. The first light-shielding layer 3 is disposed on a side of the light-emitting functional layer 2 away from the substrate 1, and the first light-shielding layer 3 includes a plurality of first openings 31, and the orthographic projection of the first opening 31 on the substrate 1 at least partially overlaps with the orthographic projection of the corresponding light-emitting unit 20 on the substrate 1. The second light-shielding layer 5 is disposed between the light-emitting functional layer 2 and the first light-shielding layer 3, and the second light-shielding layer 5 includes a plurality of second openings 51, and the orthographic projection of the second opening 51 on the substrate 1 at least partially overlaps with the orthographic projection of the corresponding light-emitting unit 20 on the substrate 1.

[0063] The filter unit 40 and the first light shielding layer 3 are located in the same layer, and at least part of the filter unit 40 is located in the corresponding first opening 31. For example, when the thickness of the filter unit 40 is less than or equal to the thickness of the light shielding portion of the first light shielding layer 3, it can be considered that the filter unit 40 is entirely located in the corresponding first opening 31. When the thickness of the filter unit 40 is greater than the thickness of the light shielding portion of the first light shielding layer 3, it can be considered that part of the filter unit 40 is located in the corresponding first opening 31. It should be noted that the filter unit 40 is used to allow light of a single color to pass through. Specifically, the filter unit 40 allows the color of the light passing through to be the same as the light color of the corresponding light emitting unit 20, and the light of a different color from the light emitting unit 20 is absorbed by the filter unit 40. For example, the filter unit 40 may adopt a color filter (CF).

[0064] The display panel 100 provided in the embodiment of the present application adopts a combined structure of a first light shielding layer 3, a second light shielding layer 5 and a filter unit 40. The filter unit 40 is located at the opening position of the first light shielding layer 3 and corresponds to the position of the light emitting unit 20. The physical shielding ability of the light is enhanced by the double-layer light shielding layer, and the optical performance of the light is further optimized by utilizing the selective absorption and transmission characteristics of the light by the filter unit 40, thereby reducing the probability of crosstalk or color mixing between light emitting units 20 of different colors. This combined structure can fully combine the physical light shielding advantages of the multi-layer filter layer and the optical optimization characteristics of the filter unit 40, can cope with more complex and serious light leakage situations, can achieve good anti-peeping effect and anti-light leakage function, thereby improving the display quality and visual experience of the display panel 100, and meeting the privacy protection requirements of different scenarios.

[0065] In some embodiments, Figure 3 As shown, the orthographic projection of the light emitting unit 20 on the substrate 1 is located within the orthographic projection of the first opening 31 on the substrate 1. That is, in the direction parallel to the substrate 1, the size of the first opening 31 is larger than the size of the light emitting unit 20. Such a design can ensure that the forward light output of the light emitting unit 20 will not be blocked, because the larger first opening 31 can reduce the blocking and reflection of the light by the edge of the opening, so that the light can pass more smoothly, which can improve the overall light transmittance and ensure the display brightness of the display panel when displaying at a small angle.

[0066] In addition, in anti-peeping applications, the size of the first opening 31 is larger than the size of the light-emitting unit 20, thereby forming an outward expansion structure of the edge of the shading layer, which helps to adjust the light path and reduce the possible light leakage path. When working in conjunction with the filter unit 40, it can more effectively control the direction of light, reduce the light leakage phenomenon of anti-peeping pixels, further enhance the anti-peeping effect, and ensure the privacy of displayed content at non-visual angles.

[0067] like Figure 3 As shown, in the direction perpendicular to the substrate 1, the distance H between the first light shielding layer 3 and the light emitting unit 20 satisfies the first formula:

[0068] H=(D+d) / tanβ

[0069] Wherein, H represents the distance from the first light shielding layer 3 to the light emitting unit 20 in the direction perpendicular to the substrate 1. D represents the size of the light emitting unit 20 in the direction parallel to the substrate 1, d represents the distance between the edge of the orthographic projection of the first opening 31 on the substrate 1 and the edge of the orthographic projection of the corresponding light emitting unit 20 on the substrate 1, and β represents the emission angle of the light emitting unit 20. For example, H may specifically be the distance from the side surface of the first light shielding layer 3 away from the substrate 1 to the side surface of the light emitting unit 20 away from the substrate 1. D may specifically be the width of the light emitting unit 20, and d may be the outward expansion distance of the opening edge of the first light shielding layer 3 relative to the corresponding light emitting unit 20.

[0070] According to the above first formula, the distance between the first light shielding layer 3 and the light emitting unit 20 can be accurately calculated, and the position of the first light shielding layer 3 can be determined, so that the anti-peeping angle can be controlled more accurately.

[0071] Optionally, the distance d between the edge of the orthographic projection of the first opening 31 on the substrate 1 and the edge of the orthographic projection of the corresponding light emitting unit 20 on the substrate 1 is 0.5-2 μm. For example, the distance d between the edge of the orthographic projection of the first opening 31 on the substrate 1 and the edge of the orthographic projection of the corresponding light emitting unit 20 on the substrate 1 can be 0.5 μm, 0.7 μm, 1 μm, 1.5 μm, 2 μm, etc.

[0072] Optionally, the size of the filter unit 40 in the direction perpendicular to the substrate 1 is greater than the size of the first light shielding layer 3 in the direction perpendicular to the substrate 1. In other words, the thickness of the filter unit 40 is greater than the thickness of the first light shielding layer 3. Among them, the thicker filter unit 40 can better suppress the light leakage problem of the anti-peeping pixel, and also makes the requirements for precision and process complexity relatively lower in the manufacturing process. Under the premise of ensuring the anti-peeping and anti-light leakage effects, the production cost can be reduced to a certain extent.

[0073] In some embodiments, Figure 3 As shown, the display panel 100 further includes a dielectric layer 9, at least a portion of which is disposed between the light emitting unit 20 and the corresponding filter unit 40. The light emitted by the light emitting unit 20 propagates through the dielectric layer 9 and enters the corresponding filter unit 40.

[0074] The relationship between the emission angle β of the light emitting unit 20 and the anti-peep angle α satisfies the second formula:

[0075] β=arcsin(sinα / n)

[0076] Wherein, β represents the emission angle of the light emitting unit 20 in the dielectric layer 9, n represents the refractive index of the dielectric layer 9, and α represents the anti-peeping angle.

[0077] According to the relationship between the emission angle β of the light emitting unit 20 and the anti-peeping angle α, the anti-peeping angle α can be calculated after the emission angle β of the light emitting unit 20 in the dielectric layer 9 and the refractive index of the dielectric layer 9 are known. In this way, the anti-peeping angle α can be more accurately calculated based on the known structural design. Alternatively, the emission angle of the light emitting unit 20 or other related structural designs can be more accurately designed based on the required anti-peeping angle α.

[0078] It should be noted that if the dielectric layer 9 is a single film layer, the refractive index n of the dielectric layer 9 is equal to the refractive index of the film layer. If the dielectric layer 9 includes multiple film layers, the refractive index n of the dielectric layer 9 is equal to the comprehensive refractive index of all film layers. The equivalent value calculated by the optical formula can be used as the comprehensive refractive index according to factors such as the thickness of each film layer, material properties, and propagation characteristics of light in each film layer. The comprehensive refractive index can reflect the refractive ability of the dielectric layer 9 as a whole to light.

[0079] For example, when the dielectric layer 9 adopts a single-layer optical adhesive layer, such as a cushioning layer or an encapsulation layer, the refractive index n of the dielectric layer 9 is equal to the refractive index of the optical adhesive layer. When the dielectric layer 9 adopts a double-layer structure formed by a cushioning layer and an encapsulation layer, the refractive index n of the dielectric layer 9 is equal to the combined refractive index of the cushioning layer and the encapsulation layer.

[0080] Optionally, the orthographic projection of the second opening 51 on the substrate 1 at least partially overlaps with the orthographic projection of the first opening 31 on the substrate 1. The orthographic projections of the filter unit 40 and the corresponding first opening 31 and second opening 51 on the substrate 1 may coincide or partially overlap.

[0081] In some embodiments, Figure 4 As shown, the dielectric layer 9 includes a raising layer 7 , and the raising layer 7 is arranged between the second light-shielding layer 5 and the first light-shielding layer 3 .

[0082] Optionally, the raising layer 7 covers the second light shielding layer 5 , and the raising layer 7 fills the second opening 51 .

[0083] Optionally, the material of the padding layer 7 includes optical adhesive.

[0084] The distance between the first light shielding layer 3 and the second light shielding layer 5 can be adjusted by the raised layer 7 to ensure that the filter unit 40 and each light shielding layer are in a suitable relative position. The raised layer 7 provides a stable support, which helps to maintain the stability of the optical structure and ensure that the light propagates along the expected optical path when passing through each layer structure.

[0085] In some embodiments, Figure 4 As shown, the dielectric layer 9 includes a packaging layer 6 , and the packaging layer 6 is arranged between the light-emitting functional layer 2 and the first light-shielding layer 3 .

[0086] Optionally, the encapsulation layer 6 covers a plurality of light emitting units 20 .

[0087] Specifically, the encapsulation layer 6 is used to protect the light-emitting unit 20 and prevent the intrusion of water vapor.

[0088] In some embodiments, Figure 4 As shown, the first light shielding layer 3 includes a first light shielding portion 30 , and the first light shielding portion 30 is at least partially located between the plurality of first openings 31 .

[0089] Optionally, the first light shielding portion 30 includes an annular structure enclosing a plurality of first openings 31. The annular structure of the first light shielding portion 30 can ensure the stability of observing the display image from various observation directions under a narrow viewing angle, and achieve anti-peeping in various directions.

[0090] Exemplarily, the first light shielding portion 30 may enclose a circular first opening 31 , so that the display images observed at the observation angles around the circular opening are consistent.

[0091] Optionally, the second light shielding layer 5 includes a second light shielding portion 50 , and the second light shielding portion 50 is at least partially located between the plurality of second openings 51 .

[0092] Optionally, the second light shielding portion 50 includes an annular structure enclosing a plurality of second openings 51. The annular structure of the second light shielding portion 50 helps to prevent peeping in all directions.

[0093] Optionally, the first light shielding portion 30 and the second light shielding portion 50 both include a black light absorbing material. The black light absorbing material may be a black photoresist, a black resin, or a black ink material, etc. The black light absorbing material can absorb light of the entire visible light band. For example, the black light absorbing material may be a material for making a black matrix (BM), which can improve the light shielding effect.

[0094] In some embodiments, Figure 4 As shown, the plurality of light emitting units 20 include a first light emitting unit 21, a second light emitting unit 22 and a third light emitting unit 23 that emit light of different colors. The filter unit 40 includes a first filter unit 41, a second filter unit 42 and a third filter unit 43, and the first filter unit 41, the second filter unit 42 and the third filter unit 43 allow different colors of light to pass through.

[0095] The color of light allowed to pass through the first filter unit 41 is the same as the color of light emitted by the corresponding first light emitting unit 21. The orthographic projection of the first light emitting unit 21 on the substrate 1 is located within the orthographic projection of the first filter unit 41 on the substrate 1. The color of light allowed to pass through the second filter unit 42 is the same as the color of light emitted by the corresponding second light emitting unit 22. The orthographic projection of the second light emitting unit 22 on the substrate 1 is located within the orthographic projection of the second filter unit 42 on the substrate 1. The color of light allowed to pass through the third filter unit 43 is the same as the color of light emitted by the corresponding third light emitting unit 23. The orthographic projection of the third light emitting unit 23 on the substrate 1 is located within the orthographic projection of the third filter unit 43 on the substrate 1.

[0096] In some embodiments, Figure 4 As shown, in a direction parallel to the substrate 1 , the sizes of the first light emitting unit 21 , the second light emitting unit 22 and the third light emitting unit 23 increase sequentially.

[0097] Optionally, in a direction parallel to the substrate 1 , the sizes of the first filter unit 41 , the second filter unit 42 and the third filter unit 43 increase sequentially.

[0098] For example, the first light emitting unit 21 , the second light emitting unit 22 , and the third light emitting unit 23 emit red, green, and blue light, respectively.

[0099] Correspondingly, the first filter unit 41 , the second filter unit 42 and the third filter unit 43 respectively use a red filter, a green filter and a blue filter to allow light of corresponding colors to pass through.

[0100] In some embodiments, Figure 4 As shown, the display panel 100 further includes a planarization layer 8 , which is disposed on a side of the first light shielding layer 3 away from the substrate 1 .

[0101] Optionally, the planarization layer 8 covers the first light shielding layer 3 and the filter unit 40. The planarization effect of the planarization layer 8 eliminates the unevenness between the first light shielding layer 3 and the filter unit 40.

[0102] Another embodiment of the present application provides a display device, which may include the display panel 100 in any of the above embodiments. For example, the display device may be any product or component with a display function, such as a television, a digital camera, a mobile phone, a watch, a tablet computer, a laptop computer, a navigator, etc.

[0103] The display device provided in this embodiment has a display panel 100 that adopts a combination structure of a first light shielding layer 3, a second light shielding layer 5, and a filter unit 40. The filter unit 40 is located at the opening position of the first light shielding layer 3 and corresponds to the position of the light emitting unit 20. The physical shielding ability of the light is enhanced by the double-layer light shielding layer, and the optical performance of the light is further optimized by utilizing the selective absorption and transmission characteristics of the light by the filter unit 40, thereby reducing the probability of crosstalk or color mixing between light emitting units 20 of different colors. This combination structure can fully combine the physical light shielding advantages of the multi-layer filter layer and the optical optimization characteristics of the filter unit 40, can cope with more complex and serious light leakage situations, can achieve good anti-peeping effect and anti-light leakage function, thereby improving the display quality and visual experience of the display panel 100, and meeting the privacy protection requirements of different scenarios.

[0104] Although the present application has been described in conjunction with specific embodiments thereof, many alternatives, modifications and variations of these embodiments will be apparent to those skilled in the art in light of the foregoing description.

[0105] It should be noted that the above describes some embodiments of the present application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the above embodiments and still achieve the desired results. In addition, the processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0106] The embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the scope of protection of the present application.

Claims

1. A display panel, characterized in that: include: substrate; A light-emitting functional layer is disposed on one side of the substrate, and the light-emitting functional layer includes a plurality of light-emitting units disposed at intervals; A first light shielding layer is arranged on a side of the light-emitting functional layer away from the substrate, the first light shielding layer comprises a plurality of first openings, and the orthographic projections of the first openings on the substrate at least partially overlap with the orthographic projections of the corresponding light-emitting units on the substrate; A second light shielding layer is disposed between the light-emitting functional layer and the first light shielding layer, the second light shielding layer comprises a plurality of second openings, and the orthographic projections of the second openings on the substrate at least partially overlap with the orthographic projections of the corresponding light-emitting units on the substrate; A plurality of filter units, wherein the filter units and the first light shielding layer are located in the same layer, at least part of the filter units are located in the corresponding first openings, and the filter units are used to allow light having the same color as that of the corresponding light emitting unit to pass through.

2. The display panel according to claim 1, characterized in that: The orthographic projection of the light emitting unit on the substrate is located within the orthographic projection of the first opening on the substrate; In a direction perpendicular to the substrate, the distance between the first light shielding layer and the light emitting unit satisfies a first formula: H = (D + d) / tanβ; Wherein, H represents the distance from the first light shielding layer to the light emitting unit in a direction perpendicular to the substrate, D represents the size of the light emitting unit in a direction parallel to the substrate, d represents the distance between the edge of the orthographic projection of the first opening on the substrate and the edge of the orthographic projection of the corresponding light emitting unit on the substrate, and β represents the emission angle of the light emitting unit; Preferably, a distance between an edge of an orthographic projection of the first opening on the substrate and an edge of an orthographic projection of the corresponding light emitting unit on the substrate is 0.5-2 μm; Preferably, a size of the filter unit in a direction perpendicular to the substrate is larger than a size of the first light shielding layer in a direction perpendicular to the substrate.

3. The display panel according to claim 2, characterized in that: The display panel further includes: A dielectric layer is at least partially disposed between the light emitting unit and the corresponding light filtering unit: The relationship between the emission angle of the light emitting unit and the anti-peeping angle satisfies the second formula: β=arcsin(sinα / n); Wherein, β represents the emission angle of the light emitting unit in the dielectric layer, n represents the refractive index of the dielectric layer, and α represents the anti-peeping angle.

4. The display panel according to claim 3, characterized in that: The medium layer includes a cushioning layer, and the cushioning layer is arranged between the second light-shielding layer and the first light-shielding layer; Preferably, the cushioning layer covers the second light shielding layer and fills the second opening; Preferably, the material of the padding layer includes optical glue.

5. The display panel according to claim 3, characterized in that: The dielectric layer includes a packaging layer, and the packaging layer is arranged between the substrate and the second light shielding layer; Preferably, the encapsulation layer covers a plurality of the light-emitting units.

6. The display panel according to claim 1, characterized in that: The first light shielding layer includes a first light shielding portion, and the first light shielding portion is at least partially located between the first openings; Preferably, the first light shielding portion includes an annular structure enclosing a plurality of the first openings; Preferably, the first light shielding portion comprises a black light absorbing material; Preferably, the second light shielding layer includes a second light shielding portion, and the second light shielding portion is at least partially located between the plurality of second openings; Preferably, the second light shielding portion includes an annular structure enclosing a plurality of the second openings; Preferably, the second light shielding portion comprises a black light absorbing material.

7. The display panel according to claim 1, characterized in that: The plurality of light-emitting units include a first light-emitting unit, a second light-emitting unit and a third light-emitting unit that emit light of different colors; The filter unit comprises a first filter unit, a second filter unit and a third filter unit, and the first filter unit, the second filter unit and the third filter unit allow different colors of light to pass through; Preferably, the color of light allowed to pass through by the first filter unit is the same as the color of light emitted by the corresponding first light emitting unit; Preferably, the orthographic projection of the first light emitting unit on the substrate is located within the orthographic projection of the first light filtering unit on the substrate; Preferably, the color of light allowed to pass through the second filter unit is the same as the color of light emitted by the corresponding second light emitting unit; Preferably, the orthographic projection of the second light emitting unit on the substrate is located within the orthographic projection of the second light filtering unit on the substrate; Preferably, the color of light allowed to pass through the third filter unit is the same as the color of light emitted by the corresponding third light emitting unit; Preferably, the orthographic projection of the third light emitting unit on the substrate is located within the orthographic projection of the third filter unit on the substrate.

8. The display panel according to claim 7, characterized in that: In a direction parallel to the substrate, the sizes of the first light emitting unit, the second light emitting unit and the third light emitting unit increase in sequence; Preferably, in a direction parallel to the substrate, the sizes of the first filter unit, the second filter unit and the third filter unit increase sequentially; Preferably, the first light emitting unit is used to emit red light, the second light emitting unit is used to emit green light, and the third light emitting unit is used to emit blue light; Preferably, the first filter unit includes a red filter, the second filter unit includes a green filter, and the third filter unit includes a blue filter.

9. The display panel according to claim 1, characterized in that: The display panel further includes: A planarization layer, disposed on a side of the first light shielding layer away from the substrate; Preferably, the planarization layer covers the first light shielding layer and the light filtering unit.

10. A display device, characterized in that: Comprising a display panel as described in any one of claims 1 to 9.

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