Display panel and display device

Abstract

Embodiments of the present application provide a display panel and a display device. The display panel includes a substrate and a light-emitting unit located on one side of the substrate, a black matrix, and a filter layer. The black matrix is ​​located on a side of the light-emitting unit away from the substrate and includes a plurality of black matrix openings, the black matrix openings being arranged corresponding to the light-emitting unit. The filter layer includes a plurality of color resist units, the color resist units filling the black matrix openings, and at least partially overlapping with light-emitting units of the same color along a direction perpendicular to the plane of the display panel. The color resist units include a plurality of microparticles, the difference between the particle size of the microparticles and the wavelength of the light emitted by the corresponding light-emitting unit is within a preset range, and the particle size of the microparticles of the color resist units corresponding to light-emitting units of different colors is different. In the present application, reflected light is scattered after entering the corresponding color resist unit, destroying the original emission direction of the reflected light and causing the emission direction of the reflected light to be dispersed, thereby improving the dispersion problem in the display panel.

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 Technology]

[0002] Organic light-emitting diode (OLED) display panels have the advantages of simple manufacturing process, low power consumption, light weight, fast response speed, wide viewing angle, high resolution and wide temperature characteristics, and have broad market application prospects.

[0003] In existing OLED display panels, in order to reduce the thickness of the display panel and save power consumption, polarizers are usually no longer provided. This causes the reflected light generated after external light hits the display panel to easily exhibit dispersion, affecting the user's viewing experience. [Summary of the invention]

[0004] In view of this, embodiments of the present application provide a display panel and a display device to solve the above problems.

[0005] In a first aspect, an embodiment of the present application provides a display panel, comprising a substrate and a light-emitting unit located on one side of the substrate, a black matrix, and a filter layer; the black matrix is ​​located on a side of the light-emitting unit away from the substrate, the black matrix comprises a plurality of black matrix openings, and the black matrix openings are arranged corresponding to the light-emitting units; the filter layer comprises a plurality of color resist units, the color resist units fill the black matrix openings, and the color resist units at least partially overlap with the light-emitting units of the same color along a direction perpendicular to the plane of the display panel; wherein the color resist units comprise a plurality of micro-particles, the difference between the particle size of the micro-particles and the wavelength of the light emitted by the corresponding light-emitting unit is within a preset range, and the particle size of the micro-particles of the color resist units corresponding to the light-emitting units of different colors is different.

[0006] In a second aspect, an embodiment of the present application provides a display device, comprising the display panel provided in the first aspect.

[0007] In the embodiments of the present application, microparticles are provided within the color-resistance units, and the particle size of the microparticles is comparable to the wavelength of the light emitted by the corresponding light-emitting units. Based on light propagation theory, reflected light is scattered upon entering the corresponding color-resistance units, disrupting the original emission direction of the reflected light and causing it to disperse in different directions. This improves the dispersion problem in the display panel and enhances the user's viewing experience. Furthermore, the light emitted by the light-emitting units is scattered upon exiting through the corresponding color-resistance units, increasing the light's emission angle, thereby improving the light output angle of the display panel.

Brief Description of the Drawings

[0008] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0009] Figure 1 A schematic structural diagram of a display panel provided in an embodiment of the present application;

[0010] Figure 2 A schematic structural diagram of another display panel provided in an embodiment of the present application;

[0011] Figure 3 A schematic structural diagram of another display panel provided in an embodiment of the present application;

[0012] Figure 4 A schematic diagram of a partial structure of a display panel provided in an embodiment of the present application;

[0013] Figure 5 A schematic structural diagram of another display panel provided in an embodiment of the present application;

[0014] Figure 6 A schematic structural diagram of another display panel provided in an embodiment of the present application;

[0015] Figure 7 A schematic diagram of a display panel provided in an embodiment of the present application;

[0016] Figure 8 A schematic diagram of another display panel provided in an embodiment of the present application;

[0017] Figure 9 A schematic structural diagram of another display panel provided in an embodiment of the present application;

[0018] Figure 10 A schematic structural diagram of another display panel provided in an embodiment of the present application;

[0019] Figure 11 A schematic diagram of a display device provided in an embodiment of the present application;

[0020] Figure 12 A schematic diagram of a partial structure of another display panel provided in an embodiment of the present application;

[0021] Figure 13 A schematic structural diagram of another display panel provided in an embodiment of the present application;

[0022] Figure 14 A schematic diagram of another display device provided in an embodiment of the present application. [Specific implementation method]

[0023] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0024] It should be clear that the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0025] The terms used in the embodiments of the present application are for the purpose of describing specific embodiments only and are not intended to limit the present application. The singular forms "a", "an", "the" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise.

[0026] It should be understood that the term "and / or" as used herein is merely a description of the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0027] In the description of this specification, it is necessary to understand that the words "substantially", "approximately", "approximately", "about", "roughly", "generally" and the like described in the claims and embodiments of this application refer to what can be generally recognized within a reasonable process operation range or tolerance range, rather than an exact value.

[0028] It should be understood that although the terms "first," "second," and the like may be used in the embodiments of the present application to describe colors, microparticles, display areas, and the like, these colors, microparticles, display areas, and the like should not be limited to these terms. These terms are merely used to distinguish colors, microparticles, display areas, and the like from one another. For example, without departing from the scope of the embodiments of the present application, a first microparticle may also be referred to as a second microparticle, and similarly, a second microparticle may also be referred to as a first microparticle.

[0029] In the prior art, since the metal film layer in the display panel is usually not a flat structure, the emission angle of the reflected light generated when the external ambient light hits these metal film layers is not consistent, and color dispersion is likely to occur in the display panel. Especially when the display panel is in the off state, the dispersion phenomenon is particularly obvious, affecting the user's viewing experience.

[0030] The inventors of this application have discovered through research that destroying the original emission direction of reflected light can effectively improve the dispersion problem. Therefore, using light scattering to destroy the original emission direction of reflected light has become a solution.

[0031] Figure 1 A schematic structural diagram of a display panel provided in an embodiment of the present application is shown in FIG. Figure 2 A schematic structural diagram of another display panel provided in an embodiment of the present application.

[0032] The embodiment of the present application provides a display panel 100, such as Figure 1 As shown, the display panel 100 includes a substrate 10 and light-emitting units 20, a black matrix 30, and a filter layer 40 located on one side of the substrate 10. The black matrix 30 is located on the side of the light-emitting units 20 away from the substrate 10. The black matrix 30 includes a plurality of black matrix openings 31. The black matrix openings 31 are arranged corresponding to the light-emitting units 20. That is, along a direction Z perpendicular to the plane of the display panel 100, the black matrix openings 31 at least partially overlap with the light-emitting units 20. Light emitted by the light-emitting units 20 is emitted through the black matrix openings 31.

[0033] Alternatively, as Figure 1 As shown, the black matrix openings 31 are arranged in a one-to-one correspondence with the light-emitting units 20 .

[0034] Alternatively, as Figure 2 As shown, a black matrix opening 31 is provided corresponding to two adjacent light emitting units 20 , and the colors of the light emitted by the two adjacent light emitting units 20 are the same.

[0035] The filter layer 40 includes a plurality of color-resist units 41. The color-resist units 41 fill the black matrix openings 31, with each black matrix opening 31 filled with color-resist units 41 of a single color. Along a direction Z perpendicular to the plane of the display panel 100, the color-resist units 41 at least partially overlap with the light-emitting units 20 of the same color. That is, light emitted by the light-emitting units 20 exits through the color-resist units 41 of the same color as the light.

[0036] It should be noted that the color of the light emitting unit 20 in this application refers to the color of the light emitted by the light emitting unit 20.

[0037] The color resist unit 41 includes a plurality of microparticles P. The difference between the particle size of the microparticles P and the wavelength of the light emitted by the corresponding light-emitting unit 20 is within a predetermined range. Furthermore, the particle size of the microparticles P in the color resist unit 41 corresponding to light-emitting units 20 of different colors is different. In other words, along a direction Z perpendicular to the plane of the display panel 100, the particle size of the microparticles P in the color resist unit 41 that overlap with light-emitting units 20 of different colors is different.

[0038] Optionally, the microparticles P are at least one of titanium oxide particles, silicon oxide particles, and zirconium oxide particles.

[0039] Optionally, at least some of the pigment particles in the color resist unit 41 are microparticles P.

[0040] The difference between the particle size of the micro-particles P and the wavelength of the light emitted by the corresponding light-emitting unit 20 may be 0-50 nm.

[0041] For example, the particle size of the microparticle P is d, and the wavelength of the light emitted by the corresponding light emitting unit 20 is λ, where −50 nm ≤ (λ−d) ≤ 50 nm.

[0042] It should be noted that, generally speaking, the wavelength of the light emitted by the light emitting unit 20 is within a certain range, and the wavelength of the light emitted by the light emitting unit 20 can be understood as the central wavelength of the light.

[0043] It is understood that at least a portion of the reflected light generated by the ambient light striking the display panel 100 will be emitted through the color-resistance unit 41, and the color of the reflected light will be the same as the color of the color-resistance unit 41 through which it passes. In other words, the reflected light emitted through the color-resistance unit 41 has the same color and wavelength as the light emitted by the light-emitting unit 20 corresponding to the color-resistance unit 41.

[0044] In the embodiment of the present application, the color-resistance units 41 of different colors can absorb visible light of wavelengths other than their own colors, resulting in a lower reflectivity of the display panel 100. This eliminates the need for additional polarizers in the display panel 100 to eliminate reflected light. Furthermore, the color-resistance units 41 can be fabricated directly on the underlying substrate, eliminating the need for additional lamination technology. This helps reduce the thickness of the display panel 100 and improves light extraction efficiency. The display panel 100 provided in the embodiment of the present application can be relatively thin, meeting user demands for thinner and lighter products.

[0045] Furthermore, in the embodiment of the present application, microparticles P are disposed within the color-resistance unit 41, and the particle size of the microparticles P is comparable to the wavelength of the light emitted by the corresponding light-emitting unit 20. According to light propagation theory, reflected light incident on the corresponding color-resistance unit 41 is scattered, disrupting the original emission direction of the reflected light and causing it to disperse in a different direction. This improves the dispersion problem in the display panel 100 and enhances the user's viewing experience. Furthermore, the light emitted by the light-emitting unit 20 is scattered as it exits through the corresponding color-resistance unit 41, increasing the light's emission angle, thereby improving the light emission angle of the display panel 100.

[0046] Please continue to refer to Figure 1In one embodiment of the present application, the display panel 100 includes a plurality of light-emitting units 20, including first-color light-emitting units 21 and second-color light-emitting units 22. The plurality of color resist units 41 include first-color color resist units 411 and second-color color resist units 412. The microparticles P in the first-color color resist units 411 are first microparticles P1, and the microparticles P in the second-color color resist units 412 are second microparticles P2.

[0047] Along a direction Z perpendicular to the plane of the display panel 100 , the first color resist unit 411 at least partially overlaps with the first color light emitting unit 21 , and the second color resist unit 412 at least partially overlaps with the second color light emitting unit 22 .

[0048] That is to say, the first color light-emitting unit 21 corresponds to the first color color resist unit 411, and the first color light emitted by the first color light-emitting unit 21 is emitted through the first color color resist unit 411; the second color light-emitting unit 22 corresponds to the second color color resist unit 412, and the second color light emitted by the second color light-emitting unit 22 is emitted through the second color color resist unit 412.

[0049] The wavelength of the first color light emitted by the first color light emitting unit 21 is λ1, the wavelength of the second color light emitted by the second color light emitting unit 22 is λ2, the particle size of the first microparticle P1 is d1, the particle size of the second microparticle P2 is d2, and (λ1-λ2)*(d1-d2)>0.

[0050] It should be noted that the particle size d1 of the first microparticles P1 may be the average particle size of the first microparticles P1 in the first color resist unit 411 , and the particle size d2 of the second microparticles P2 may be the average particle size of the second microparticles P2 in the second color resist unit 412 .

[0051] In the embodiment of the present application, when the wavelength λ1 of the first color light emitted by the first color light-emitting unit 21 is greater than the wavelength λ2 of the second color light emitted by the second color light-emitting unit 22, the particle size d1 of the first micro-particle P1 in the first color color resist unit 411 corresponding to the first color light-emitting unit 21 is greater than the particle size d2 of the second micro-particle P2 in the second color color resist unit 412 corresponding to the second color light-emitting unit 22, that is, when λ1>λ2, d1>d2.

[0052] When the wavelength λ1 of the first color light emitted by the first color light-emitting unit 21 is smaller than the wavelength λ2 of the second color light emitted by the second color light-emitting unit 22, the particle size d1 of the first microparticle P1 in the first color color resist unit 411 corresponding to the first color light-emitting unit 21 is smaller than the particle size d2 of the second microparticle P2 in the second color color resist unit 412 corresponding to the second color light-emitting unit 22, that is, when λ1<λ2, d1<d2.

[0053] In the embodiment of the present application, the microparticles P in the color-resistance unit 41 corresponding to the light-emitting units 20 emitting light with shorter wavelengths have smaller particle sizes, while the microparticles P in the color-resistance unit 41 corresponding to the light-emitting units 20 emitting light with longer wavelengths have larger particle sizes. In other words, light is emitted through the microparticles P whose particle sizes correspond to their wavelengths. The reflection and refraction of light between microparticles P with particle sizes comparable to their wavelengths can compound the interference and refraction of the light, thereby further increasing the light emission angle and adjusting the display quality of the display panel 100.

[0054] Please continue to refer to Figure 1 In one embodiment of the present application, the plurality of light-emitting units 20 further include a third color light-emitting unit 23. The plurality of color resist units 41 further include a third color resist unit 413, and the microparticles P in the third color resist unit 413 are third microparticles P3.

[0055] Along a direction Z perpendicular to the plane of the display panel 100, the third color resist unit 413 at least partially overlaps the third color light emitting unit 23. That is, the third color light emitting unit 23 corresponds to the third color resist unit 413, and the third color light emitted by the third color light emitting unit 23 is emitted through the third color resist unit 413.

[0056] The wavelength of the third color light emitted by the third color light emitting unit 23 is λ3, the particle size of the third micro-particle P3 is d3, and (λ2-λ3)*(d2-d3)>0.

[0057] It should be noted that the particle size d3 of the third micro-particles P3 may be the average particle size of the third micro-particles P3 in the third color resist unit 413 .

[0058] In the embodiment of the present application, when the wavelength λ2 of the second color light emitted by the second color light-emitting unit 22 is greater than the wavelength λ3 of the third color light emitted by the third color light-emitting unit 23, the particle size d2 of the second micro-particle P2 in the second color color resist unit 412 corresponding to the second color light-emitting unit 22 is greater than the particle size d3 of the third micro-particle P3 in the third color color resist unit 413 corresponding to the third color light-emitting unit 23, that is, when λ2>λ3, d2>d3.

[0059] When the wavelength λ2 of the second color light emitted by the second color light-emitting unit 22 is smaller than the wavelength λ3 of the first color light emitted by the third color light-emitting unit 23, the particle size d2 of the second micro-particle P2 in the second color color resist unit 412 corresponding to the second color light-emitting unit 22 is smaller than the particle size d3 of the third micro-particle P3 in the third color color resist unit 413 corresponding to the third color light-emitting unit 23, that is, when λ2<λ3, d2<d3.

[0060] In one embodiment of the present application, (λ1-λ2)>(λ2-λ3), and (d1-d2)>(d2-d3).

[0061] That is, when the difference between the wavelength λ1 of the first color light emitted by the first color light emitting unit 21 and the wavelength λ2 of the second color light emitted by the second color light emitting unit 22 is greater than the difference between the wavelength λ2 of the second color light emitted by the second color light emitting unit 22 and the wavelength λ3 of the third color light emitted by the third color light emitting unit 23, then the difference between the particle size d1 of the first microparticle P1 in the first color color resist unit 411 corresponding to the first color light emitting unit 21 and the particle size d2 of the second microparticle P2 in the second color color resist unit 412 corresponding to the second color light emitting unit 22 is greater than the difference between the particle size d2 of the second microparticle P2 in the second color color resist unit 412 corresponding to the second color light emitting unit 22 and the particle size d3 of the third microparticle P3 in the third color color resist unit 413 corresponding to the third color light emitting unit 23.

[0062] The wavelength of the first color light may be the center wavelength of the first color light, the wavelength of the second color light may be the center wavelength of the second color light, and the wavelength of the third color light may be the center wavelength of the third color light.

[0063] Alternatively, the first color resist unit 411 is a red color resist unit, the second color resist unit 412 is a green color resist unit, and the third color resist unit 413 is a blue color resist unit. Of course, the first color light-emitting unit 21 can be a red light-emitting unit, the second color light-emitting unit 22 can be a green light-emitting unit, and the third color light-emitting unit 23 can be a blue light-emitting unit. The particle size d3 of the third micro-particle P3 can be smaller than the particle size d2 of the second micro-particle P2, and the particle size d2 of the second micro-particle P2 can be smaller than the particle size d1 of the first micro-particle P1.

[0064] Furthermore, the particle size d1 of the first microparticle P1 may be 600-800 nm, the particle size d2 of the second microparticle P2 may be 480-580 nm, and the particle size d3 of the third microparticle P3 may be 380-550 nm.

[0065] Figure 3A schematic structural diagram of another display panel provided in an embodiment of the present application.

[0066] like Figure 3 As shown, in one embodiment of the present application, the display panel 100 further includes a first film layer 50 . The first film layer 50 is located on a side of the filter layer 40 away from the substrate 10 , and the first film layer 50 covers the filter layer 40 .

[0067] The first film layer 50 includes fourth micro-particles P4 , and the particle size of the fourth micro-particles P4 is d4 , wherein d4 < d3 .

[0068] That is, the particle size d4 of the fourth micro-particle P4 is smaller than the particle size d3 of the third micro-particle P3. The third micro-particle P3 may be a micro-particle P in the blue color-resist unit.

[0069] As can be seen from the above embodiment, the particle size d3 of the third micro-particle P3 can be smaller than the particle size d2 of the second micro-particle P2, and can also be smaller than the particle size d1 of the first micro-particle P1. The particle size d4 of the fourth micro-particle P4 is smaller than the particle size d3 of the third micro-particle P3. Therefore, the particle size d4 of the fourth micro-particle P4 can be smaller than the particle size of the micro-particles P in the filter layer 40.

[0070] The first film layer 50 can be a planarization layer, and setting the particle size of the fourth micro-particles P4 smaller can help make the first film layer 50 relatively flat. Furthermore, the first film layer 50 can also be a transparent layer, and setting the particle size of the fourth micro-particles P4 smaller can also increase the haze of the first film layer 50, thereby improving the display effect.

[0071] Optionally, 0<d4≤100nm.

[0072] Furthermore, the refractive index of the fourth micro-particle P4 is greater than the refractive index of the third micro-particle P3.

[0073] It should be noted that the first film layer 50 can be provided on the entire surface.

[0074] In the embodiment of the present application, the particle size d4 of the fourth micro-particles P4 is set to be smaller, and the refractive index of the fourth micro-particles P4 is set to be larger, which is beneficial to increasing the haze of the first film layer 50, thereby further dispersing the emission direction of the reflected light and improving the dispersion problem in the display panel 100.

[0075] Figure 4 A schematic diagram of the partial structure of a display panel provided in an embodiment of the present application.

[0076] In one embodiment of the present application, Figure 4As shown, the color resist unit 41 includes a middle portion 41A and an edge portion 41B. In the same color resist unit 41 , the concentration of the microparticles P in the edge portion 41B is lower than the concentration of the microparticles P in the middle portion 41A.

[0077] The edge portion 41B may include a first edge portion 41B1 and a second edge portion 41B2 , which are respectively located on either side of the middle portion 41A. The middle portion 41A of the color resist unit 41 may be a portion overlapping the light emitting unit 20 .

[0078] In the display panel 100, the path of the light emitted by the light-emitting unit 20 through the edge portion 41B is usually longer, and due to the influence of the preparation process of the color resist unit 41, the thickness of the edge portion 41B in the same color resist unit 41 is also likely to be thicker, which further increases the path length of the light emitted through the edge portion 41B, resulting in a greater loss of light emitted through the edge portion 41B, and further resulting in a difference in brightness between the display areas corresponding to the middle portion 41A and the edge portion 41B, affecting the brightness uniformity of the display panel 100.

[0079] Therefore, in the embodiment of the present application, the concentration of the microparticles P in the middle portion 41A is set to be larger, and the concentration of the microparticles P in the edge portion 41B is set to be smaller, which is beneficial to improving the transmittance of the edge portion 41B, thereby increasing the brightness of the light emitted through the edge portion 41B, reducing the brightness difference between the display areas corresponding to the middle portion 41A and the edge portion 41B, and thereby improving the brightness uniformity of the display panel 100.

[0080] Figure 5 This is a structural diagram of another display panel provided in an embodiment of the present application. Figure 6 A schematic structural diagram of another display panel provided in an embodiment of the present application.

[0081] like Figure 5 and Figure 6 As shown, in one embodiment of the present application, the display panel 100 further includes a first electrode layer 60, which is located on a side of the filter layer 40 away from the light-emitting surface of the display panel 100. The first electrode layer 60 includes a plurality of first electrodes 61, and along a direction Z perpendicular to the plane of the display panel 100, the first electrodes 61 at least partially overlap with the color resist unit 41.

[0082] The greater the flatness of the first electrode 61 , the greater the concentration of the micro-particles P in the color-resist unit 41 at least partially overlapping with the first electrode 61 .

[0083] For example, Figure 5 and Figure 6As shown, the plurality of color resist units 41 include a first color resist unit 411 , a second color resist unit 412 and a third color resist unit 413 .

[0084] Along a direction Z perpendicular to the plane of the display panel 100, the flatness of the first electrode 61 overlapping with the first color resist unit 411 is greater than the flatness of the first electrode 61 overlapping with the second color resist unit 412, and the flatness of the first electrode 61 overlapping with the second color resist unit 412 is greater than the flatness of the first electrode 61 overlapping with the third color resist unit 413. Therefore, the concentration of the microparticles P in the first color resist unit 411 is greater than the concentration of the microparticles P in the second color resist unit 412, and the concentration of the microparticles P in the second color resist unit 412 is greater than the concentration of the microparticles P in the third color resist unit 413.

[0085] Alternatively, as Figure 5 As shown, the first electrode layer 60 can be located on a side of the light-emitting unit 20 away from the light-emitting surface of the display panel 100, and the first electrode 61 can be the anode Re of the light-emitting unit 20. The display panel 100 also includes a transistor array layer 70, which includes a plurality of transistors 71. The transistors 71 are used to provide driving signals to the first electrode 61.

[0086] In addition, if Figure 6 As shown, the first electrode layer 60 may also be located between the light emitting unit 20 and the filter layer 40 , the first electrode 61 is the cathode Ca of the light emitting unit 20 , and the first electrode 61 receives a common voltage signal.

[0087] It should be noted that Figure 5 and Figure 6 Only two types of first electrode layers 60 are illustrated; the first electrode layer 60 may also be other metal film layers in the display panel 100 .

[0088] It is understandable that the greater the flatness of the first electrode 61 , the less flat the first electrode 61 is, and the more likely the reflected light generated after the external ambient light irradiates the first electrode 61 will have a dispersion problem.

[0089] In the embodiment of the present application, a higher concentration of microparticles P in the color resist unit 41 corresponding to the first electrode 61 with greater flatness is set, which is beneficial to ensure that the emission direction of the reflected light is sufficiently dispersed and the original emission direction of the reflected light is destroyed, thereby improving the dispersion problem in the display panel 100 and enhancing the user's viewing experience.

[0090] Figure 7 A schematic diagram of a display panel provided in an embodiment of the present application is shown. Figure 8 A schematic diagram of another display panel provided in an embodiment of the present application is shown. Figure 9A schematic structural diagram of another display panel provided in an embodiment of the present application.

[0091] In one embodiment of the present application, Figure 7 and Figure 9 ,or Figure 8 and Figure 9 The display panel 100 includes a first display area AA and a second display area BB. The first display area AA surrounds at least a portion of the second display area BB. The transmittance of the second display area BB is greater than that of the first display area AA.

[0092] like Figure 7 As shown, the first display area AA can surround part of the second display area BB. Figure 8 As shown, the first display area AA surrounds the entire second display area BB.

[0093] The concentration of the micro-particles P in the second display area BB is lower than the concentration of the micro-particles P in the first display area AA.

[0094] For example, Figure 9 As shown, the concentration of the microparticles P in the first color resist unit 411 in the first display area AA is greater than the concentration of the microparticles P in the first color resist unit 411 in the second display area BB, and the concentration of the microparticles P in the second color resist unit 412 in the first display area AA is greater than the concentration of the microparticles P in the second color resist unit 412 in the second display area BB, thereby ensuring that the concentration of the microparticles P in the second display area BB is less than the concentration of the microparticles P in the first display area AA.

[0095] It should be noted that Figure 9 The concentrations of the microparticles P in the two color resist cells 41 of the first display area AA and the second display area BB are merely illustrated. Among the color resist cells 41 of the same color, the concentration of the microparticles P in the color resist cells 41 located in the first display area AA can be greater than the concentration of the microparticles P in the color resist cells 41 located in the second display area BB.

[0096] In the embodiment of the present application, setting the concentration of microparticles P in the second display area BB, which has a higher light transmittance, to a lower level helps maintain the light transmittance of the second display area BB and reduces the impact on the brightness of the light emitted from the second display area BB. Furthermore, the pixel density in the second display area BB, which has a higher light transmittance, is typically set to a lower level, resulting in the second display area BB having a lower luminance than the first display area AA. Setting the concentration of microparticles P in the second display area BB to a lower level than that in the first display area AA helps balance the brightness difference between the first display area AA and the second display area BB, thereby improving the brightness uniformity of the display panel 100.

[0097] Figure 10 A schematic structural diagram of another display panel provided in an embodiment of the present application.

[0098] Please combine Figure 7 and Figure 10 ,or Figure 8 and Figure 10 In one embodiment of the present application, the display panel 100 includes a first display area AA and a second display area BB, the first display area AA surrounds at least a portion of the second display area BB, and the transmittance of the second display area BB is greater than the transmittance of the first display area AA.

[0099] There are no micro-particles P in the second display area BB.

[0100] That is, in the display panel 100 , the micro-particles P are not disposed in the second display area BB having a higher light transmittance.

[0101] The embodiment of the present application is helpful in further ensuring the light transmittance of the second display area BB and preventing the micro-particles P from affecting the light transmittance of the second display area BB.

[0102] Figure 11 A schematic diagram of a display device provided in an embodiment of the present application.

[0103] exist Figure 7 and Figure 8 In the display panel 100 shown, the second display area BB can be used as a light path for the light sensing element.

[0104] Specifically, if Figure 11 As shown, the embodiment of the present application provides a display device 200, which includes Figure 7 and Figure 8 The display panel 100 and the light sensor CC are shown such that the second display area BB overlaps the light sensor CC along a direction perpendicular to the plane of the display panel 100. The light sensor CC may be at least one of a camera and an infrared sensor.

[0105] In one embodiment of this application, please continue to refer to Figure 9 The multiple color resist units 41 include a first color resist unit 411 and a second color resist unit 412. The difference in concentration of microparticles P in the first color resist unit 411 of the first display area AA and the first color resist unit 411 of the second display area BB is n1; the difference in concentration of microparticles P in the second color resist unit 412 of the first display area AA and the second color resist unit 412 of the second display area BB is n2.

[0106] Among them, n1≠n2.

[0107] Furthermore, the concentration of the microparticles P in the first color resist unit 411 in the first display area AA is different from the concentration of the microparticles P in the second color resist unit 412, and the concentration of the microparticles P in the first color resist unit 411 in the second display area BB is different from the concentration of the microparticles P in the second color resist unit 412.

[0108] The plurality of light-emitting units 20 include a first color light-emitting unit 21 and a second color light-emitting unit 22. Along a direction perpendicular to the plane of the display panel 100, the first color resist unit 411 at least partially overlaps with the first color light-emitting unit 21, and the second color resist unit 412 at least partially overlaps with the second color light-emitting unit 22.

[0109] The first color light emitted by the first color light emitting unit 21 is emitted through the first color resist unit 411 , and the second color light emitted by the second color light emitting unit 22 is emitted through the second color resist unit 412 .

[0110] In the embodiment of the present application, n1≠n2 is set, that is, the difference in concentration of the microparticles P in the first color resist unit 411 between the first display area AA and the second display area BB is different from the difference in concentration of the microparticles P in the second color resist unit 412 between the first display area AA and the second display area BB. This helps to reduce the attenuation difference between the first color light emitted by the first color light emitting unit 21 and the second color light emitted by the second color light emitting unit 22, balance the brightness of the first color light and the second color light, and thus avoid the problem of color fringes in the display panel 100 caused by the different brightness attenuation of the first color light and the second color light.

[0111] Figure 12 A schematic diagram of the partial structure of another display panel provided in an embodiment of the present application.

[0112] In one embodiment of the present application, Figure 12 As shown, the black matrix 30 includes a plurality of light shielding portions 32 . Along a direction Z perpendicular to the plane where the display panel 100 is located, at least a portion of the color resist units 41 overlaps with the light shielding portions 32 .

[0113] There are no micro particles P in the overlapping portion of the color-resist unit 41 and the light-shielding portion 32 .

[0114] For example, Figure 12 As shown, the black matrix openings 31 can be located between adjacent light shielding portions 32, and the color resist units 41 fill the black matrix openings 31 and extend to the surfaces of the light shielding portions 32. Along a direction Z perpendicular to the plane of the display panel 100, the portion where the color resist units 41 overlap with the light shielding portions 32 is an overlapping portion 41C, and no microparticles P are present in the overlapping portion 41C.

[0115] In the embodiment of the present application, the light shielding portion 32 can prevent optical crosstalk between light emitted by light-emitting units 20 of different colors, thereby improving the display quality of the display panel 100. Because the surface reflectivity of the color-resistance unit 41 is generally lower than that of the light shielding portion 32, the embodiment of the present application extends the color-resistance unit 41 to the surface of the light shielding portion 32, and does not provide the microparticles P in the overlapping portion of the color-resistance unit 41 and the light shielding portion 32. This can reduce the reflected light generated by external ambient light when it strikes the display panel 100, thereby improving the dispersion problem of the display panel 100.

[0116] Figure 13 A schematic structural diagram of another display panel provided in an embodiment of the present application.

[0117] like Figure 13 As shown, in one embodiment of the present application, the black matrix 30 includes a plurality of light shielding portions 32, and the filter layer 40 further includes a plurality of anti-reflection structures 42. The anti-reflection structures 42 are made of the same material as the red color resist unit. The anti-reflection structures 42 are used to reduce the reflected light generated when the external ambient light is irradiated on the display panel 100.

[0118] Along a direction Z perpendicular to the plane of the display panel 100 , the anti-reflection structure and the light shielding portion 32 at least partially overlap, and no micro-particles P are present in the anti-reflection structure 42 .

[0119] The light shielding portion 32 may be located between adjacent color-resistance units 41 to prevent optical crosstalk between the light emitted by the light-emitting units 20 of different colors.

[0120] In the filter layer 40, the first color resist unit 411 may be a red color resist unit, the second color resist unit 412 may be a green color resist unit, and the third color resist unit 413 may be a blue color resist unit. The surface reflectivity of the red color resist unit is generally lower than that of the green color resist unit, and lower than that of the blue color resist unit.

[0121] Because the surface reflectivity of the color-resistance unit 41 is generally lower than that of the light-shielding portion, the embodiment of the present application provides an anti-reflection structure 42 that overlaps with the light-shielding portion 32. The anti-reflection structure 42 is made of the same material as the red color-resistance unit. This further reduces the amount of reflected light generated by ambient light striking the display panel 100, thereby improving the color dispersion problem of the display panel 100. Furthermore, the absence of microparticles P in the anti-reflection structure 42 ensures a low surface reflectivity, thereby minimizing the amount of reflected light generated by ambient light striking the display panel 100.

[0122] Figure 14 A schematic diagram of another display device provided in an embodiment of the present application.

[0123] The embodiment of the present application provides a display device 200, such as Figure 14 As shown, the display device 200 includes the display panel 100 provided in the above embodiment. The display device 200 provided in the embodiment of the present application can be a mobile phone. In addition, the display device 200 can also be an electronic device such as a computer or a television.

[0124] In display device 200, microparticles P are disposed within color-resistance cells 41, and the particle size of microparticles P is comparable to the wavelength of light emitted by the corresponding light-emitting cells 20. Based on light propagation theory, reflected light incident on the corresponding color-resistance cells 41 is scattered, disrupting the original emission direction of the reflected light and causing it to disperse in a different direction. This improves the dispersion problem in display device 200 and enhances the user's viewing experience. Furthermore, the light emitted by the light-emitting cells 20 is scattered as it exits through the corresponding color-resistance cells 41, increasing the light's emission angle, thereby improving the light output angle of the display device 200.

[0125] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A display panel, characterized in that: include: a substrate and a light-emitting unit located on one side of the substrate; a black matrix, the black matrix being located on a side of the light-emitting unit away from the substrate, the black matrix comprising a plurality of black matrix openings, the black matrix openings being arranged corresponding to the light-emitting units; a filter layer comprising a plurality of color resist units, the color resist units filling the black matrix openings, and at least partially overlapping the light emitting units of the same color along a direction perpendicular to the plane of the display panel; The color resist unit includes a plurality of microparticles, the difference between the particle size of the microparticles and the wavelength of the light emitted by the corresponding light emitting unit is within a preset range, and the particle size of the microparticles of the color resist unit corresponding to the light emitting units of different colors is different; The display panel further includes a first electrode layer, the first electrode layer being located on a side of the filter layer away from the light-emitting surface of the display panel; the first electrode layer includes a plurality of first electrodes, and the first electrodes at least partially overlap with the color resist unit along a direction perpendicular to the plane of the display panel; The greater the flatness of the first electrode, the greater the concentration of the micro-particles in the color-resistance unit at least partially overlapping with the first electrode.

2. The display panel according to claim 1, wherein: The light-emitting unit includes a first color light-emitting unit and a second color light-emitting unit, the color resist unit includes a first color resist unit and a second color resist unit, the microparticles in the first color resist unit are first microparticles, and the microparticles in the second color resist unit are second microparticles; The wavelength of the first color light emitted by the first color light emitting unit is λ1, the wavelength of the second color light emitted by the second color light emitting unit is λ2, the particle size of the first microparticle is d1, the particle size of the second microparticle is d2, and (λ1-λ2)*(d1-d2)>0.

3. The display panel according to claim 2, wherein: The light-emitting unit further includes a third color light-emitting unit, the color resistance unit further includes a third color resistance unit, and the microparticles in the third color resistance unit are third microparticles; The wavelength of the third color light emitted by the third color light emitting unit is λ3, the particle size of the third micro-particle is d3, and (λ2-λ3)*(d2-d3)>0.

4. The display panel according to claim 3, wherein: (λ1-λ2)>(λ2-λ3), and (d1-d2)>(d2-d3).

5. The display panel according to claim 4, wherein: The first color resist unit is a red color resist unit, the second color resist unit is a green color resist unit, and the third color resist unit is a blue color resist unit.

6. The display panel according to claim 5, wherein: The display panel includes a first film layer, the first film layer covers the filter layer, the first film layer includes fourth micro particles, and the particle size of the fourth micro particles is d4, wherein d4<d3.

7. The display panel according to claim 6, wherein: The refractive index of the fourth micro-particles is greater than the refractive index of the third micro-particles.

8. The display panel according to claim 5, wherein: The particle size of the first microparticles is 600-800 nanometers, the particle size of the second microparticles is 480-580 nanometers, and the particle size of the third microparticles is 380-550 nanometers.

9. The display panel according to claim 1, wherein: The color resist unit includes a middle portion and an edge portion. In the same color resist unit, the concentration of the microparticles in the edge portion is lower than the concentration of the microparticles in the middle portion.

10. The display panel according to claim 1, wherein The display panel includes a first display area and a second display area, wherein the light transmittance of the second display area is greater than the light transmittance of the first display area; The concentration of the microparticles in the second display area is lower than the concentration of the microparticles in the first display area.

11. The display panel according to claim 10, wherein: The color resist unit includes a first color resist unit and a second color resist unit, the difference between the concentration of microparticles in the first color resist unit of the first display area and the concentration of microparticles in the first color resist unit of the second display area is n1; the difference between the concentration of microparticles in the second color resist unit of the first display area and the concentration of microparticles in the second color resist unit of the second display area is n2; wherein n1≠n2.

12. The display panel according to claim 1, wherein The display panel includes a first display area and a second display area. The light transmittance of the second display area is greater than that of the first display area. The second display area does not contain the micro-particles.

13. The display panel according to claim 1, wherein The black matrix includes a plurality of light shielding portions, and along a direction perpendicular to the plane where the display panel is located, at least part of the color resistance units overlap with the light shielding portions; Wherein, the micro particles are not present in a portion of the color resist unit that overlaps with the light shielding portion.

14. The display panel according to claim 1, wherein The black matrix includes a plurality of light-shielding portions; the filter layer further includes a plurality of anti-reflection structures, and the anti-reflection structures are made of the same material as the red color-resistance unit; Along a direction perpendicular to the plane where the display panel is located, the anti-reflection structure and the light-shielding portion at least partially overlap, and the anti-reflection structure does not contain the micro-particles.

15. The display panel according to claim 1, wherein At least part of the pigment particles in the color resist unit are the micro particles.

16. The display panel according to claim 1, wherein The microparticles are at least one of titanium oxide particles, silicon oxide particles, and zirconium oxide particles.

17. A display device, characterized in that: Comprising the display panel according to any one of claims 1-16.

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