Light-emitting structure, backlight module and display panel

Abstract

The invention discloses a light-emitting structure, a backlight module and a display panel, and relates to the technical field of display, the light-emitting structure comprises a plurality of light-emitting array areas, and a common vertex is arranged between every two adjacent light-emitting array areas; the light-emitting array area is in a regular hexagon shape, and light-emitting assemblies are arranged at the center point and the vertexes of the light-emitting array area. Adjacent light-emitting assemblies in the horizontal direction, the vertical direction and the inclined direction of the light-emitting structure have different die bonding angles. According to the invention, the MURA phenomenon is effectively avoided, and the display quality is improved.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a light-emitting structure, a backlight module and a display panel. Background Art

[0002] In recent years, with the continuous development of high-definition display technology, micro-light-emitting components, such as Mini LED (sub-millimeter light-emitting diode) and OLED (Organic Light-Emitting Diode), have shown significant advantages in the display field. Compared with traditional light-emitting components, the particles of these micro-light-emitting components are finer, thus achieving a more delicate and significantly brighter display effect. In addition, these advanced light-emitting components also support precise dimming technology, which can greatly improve the contrast of the display and bring users a more realistic visual experience.

[0003] However, with the widespread application of these micro-light-emitting components, their potential problems have gradually emerged. Commonly used packaging forms, such as rectangles, tend to be arranged horizontally or vertically on the light board to simplify the production process. However, this arrangement may cause uneven brightness or color of the display screen in the corresponding direction, forming the so-called MURA phenomenon, which in turn reduces the overall display quality.

[0004] The above contents are only used to assist in understanding the technical solution of the present application and do not constitute an admission that the above contents are prior art. Summary of the invention

[0005] The main purpose of the present application is to provide a light-emitting structure, a backlight module and a display panel, aiming to avoid the occurrence of the MURA phenomenon and improve the display quality.

[0006] To achieve the above-mentioned object, the present application provides a light-emitting structure, the light-emitting structure comprising: a plurality of light-emitting array regions, wherein a common vertex is provided between adjacent light-emitting array regions;

[0007] The light-emitting array area is in the shape of a regular hexagon, and a light-emitting component is disposed at the center point and each vertex of the light-emitting array area;

[0008] Adjacent light-emitting components in the horizontal direction, the vertical direction and the oblique direction of the light-emitting structure have different die-bonding angles.

[0009] In one embodiment, the light-emitting structure includes light-emitting components with four kinds of die-bonding angles.

[0010] In one embodiment, the light-emitting component includes: a Mini LED chip and / or a Mini LED lamp bead.

[0011] In addition, to achieve the above-mentioned purpose, an embodiment of the present application further proposes a backlight module, and the backlight module includes: the light-emitting structure as described above.

[0012] In one embodiment, the backlight module further includes a light diffuser disposed on the light emitting side of the light emitting structure, and the light diffuser includes:

[0013] a diffusion layer, the diffusion layer comprising a plurality of embedded bubbles and diffusion particles;

[0014] A first prism layer, disposed on the light incident side of the diffusion layer, wherein the prism tips of the first prism layer face the light incident direction;

[0015] The Fresnel structure is arranged on the light-emitting side of the diffusion layer.

[0016] In one embodiment, the light diffuser further includes:

[0017] The quantum dot layer is arranged between the Fresnel structure and the diffusion layer, and the quantum dot layer comprises red light quantum dots, wherein the red light wavelength of the red light quantum dots excited by light is 650-670nm.

[0018] In one embodiment, the quantum dot layer further comprises: green light quantum dots;

[0019] The quantum dot core of the green light quantum dot and / or the red light quantum dot includes: CdSe / CdS / ZnS.

[0020] In one embodiment, the light diffuser further includes:

[0021] At least one substrate layer is disposed on one side or two opposite sides of at least one functional layer, wherein the functional layer includes: the diffusion layer, the first prism layer, the Fresnel structure and the quantum dot layer.

[0022] In one embodiment, the light diffuser further includes:

[0023] The second prism layer is arranged on the light-emitting side of the diffusion layer, and the prism tips of the second prism layer face the light-emitting direction.

[0024] In addition, to achieve the above-mentioned purpose, an embodiment of the present application further proposes a display panel, which includes: the above-mentioned light-emitting structure or the above-mentioned light-diffusing plate.

[0025] One or more technical solutions proposed in the embodiment of the present application have at least the following technical effects: providing a light-emitting structure, including: a plurality of light-emitting array areas, a common vertex is provided between adjacent light-emitting array areas; the light-emitting array area is in a regular hexagon, and the center point and each vertex of the light-emitting array area are provided with a light-emitting component; the adjacent light-emitting components in the horizontal direction, vertical direction and oblique direction of the light-emitting structure have different crystal bonding angles. In the embodiment of the present application, when the adjacent light-emitting components are arranged at different crystal bonding angles, the light emitted by them will intersect from multiple directions; and this intersection can make the light more evenly distributed on the display screen, reducing the brightness or color unevenness caused by the arrangement in a single direction. Although different crystal bonding angles will cause the light emitted by the light-emitting components to form different brightness distributions on the screen. However, the embodiment of the present application realizes the staggered arrangement of the light-emitting components by arranging the light-emitting components at the center point and each vertex of the regular hexagonal light-emitting array area, so that these lights of different brightness can complement and balance each other, thereby achieving a more uniform brightness performance on the entire screen, thereby avoiding the occurrence of the MURA phenomenon and improving the display quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the structure of the light-emitting structure involved in the embodiment of the present application;

[0027] Figure 2 It is a schematic diagram of the structure of the light-emitting components with different die-bonding angles involved in the embodiments of the present application;

[0028] Figure 3 A schematic diagram of the structure of a backlight module according to an embodiment of the present application;

[0029] Figure 4 The structure of the light diffuser involved in the embodiment of the present application is shown in FIG. Figure 1 ;

[0030] Figure 5 It is a schematic diagram of the structure of a conventional diffusion layer;

[0031] Figure 6 It is a schematic diagram of the structure of the diffusion layer involved in the embodiment of the present application;

[0032] Figure 7 A schematic diagram of the structure of the Fresnel structure involved in an embodiment of the present application;

[0033] Figure 8 The structure of the light diffuser involved in the embodiment of the present application is shown in FIG. Figure 2 .

[0034] Description of Reference Numerals

[0035]

[0036]

[0037] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below. If the specific conditions are not specified in the embodiments, they are carried out according to the conventional conditions or the conditions recommended by the manufacturer. If the manufacturer is not specified for the reagents or instruments used, they are all conventional products that can be purchased commercially.

[0039] Hereinafter, the embodiment of the method for recovering lithium from waste lithium iron phosphate batteries of the present application is specifically disclosed with appropriate reference to the accompanying drawings. However, there may be cases where unnecessary detailed descriptions are omitted. For example, there are cases where detailed descriptions of well-known matters and repeated descriptions of actually the same structures are omitted. This is to avoid the following description from becoming unnecessarily lengthy and to facilitate the understanding of those skilled in the art. In addition, the accompanying drawings and the following description are provided for those skilled in the art to fully understand the present application and are not intended to limit the subject matter described in the claims.

[0040] The "range" disclosed in the present application is defined in the form of a lower limit and an upper limit, and a given range is defined by selecting a lower limit and an upper limit, and the selected lower limit and upper limit define the boundaries of the particular range. The range defined in this way can be inclusive or exclusive of the end values, and can be arbitrarily combined, that is, any lower limit can be combined with any upper limit to form a range. For example, if a range of 60 to 120 and 80 to 110 is listed for a particular parameter, it is understood that a range of 60 to 110 and 80 to 120 is also expected. In addition, if the minimum range values ​​1 and 2 are listed, and if the maximum range values ​​3, 4 and 5 are listed, the following ranges can all be expected: 1 to 3, 1 to 4, 1 to 5, 2 to 3, 2 to 4 and 2 to 5. In the present application, unless otherwise specified, the numerical range "a to b" represents an abbreviation of any real number combination between a and b, where a and b are both real numbers. For example, the numerical range "0-5" means that all real numbers between "0-5" are listed in this document, and "0-5" is just an abbreviation of these numerical combinations. In addition, when a parameter is expressed as an integer ≥ 2, it is equivalent to disclosing that the parameter is, for example, an integer of 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, etc.

[0041] Unless otherwise specified, all embodiments and optional embodiments of the present application can be combined with each other to form a new technical solution.

[0042] Unless otherwise specified, all technical features and optional technical features of this application can be combined with each other to form a new technical solution.

[0043] If there is no special explanation, all steps of the present application can be performed sequentially or randomly, preferably sequentially. For example, the method includes steps (a) and (b), which means that the method may include steps (a) and (b) performed sequentially, or may include steps (b) and (a) performed sequentially. For example, the method may further include step (c), which means that step (c) may be added to the method in any order. For example, the method may include steps (a), (b) and (c), or may include steps (a), (c) and (b), or may include steps (c), (a) and (b), etc.

[0044] If there is no special explanation, the "include" and "comprising" mentioned in this application are open-ended or closed-ended. For example, the "include" and "comprising" may mean that other components not listed may also be included or only the listed components may be included or only the listed components may be included.

[0045] If not specifically stated, in this application, the term "or" is inclusive. For example, the phrase "A or B" means "A, B, or both A and B". More specifically, any of the following conditions satisfies the condition "A or B": A is true (or exists) and B is false (or does not exist); A is false (or does not exist) and B is true (or exists); or both A and B are true (or exist).

[0046] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the technical solution of the present application is further described below in conjunction with the accompanying drawings and embodiments. However, the present application is not limited to the listed embodiments, and should also include any other known changes within the scope of the rights claimed in the present application.

[0047] The term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present application. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0048] In order to better understand the technical solution of the present application, a detailed description will be given below in conjunction with the accompanying drawings and specific implementation methods.

[0049] In the related art, the commonly used packaging form of light-emitting components is rectangular, and this design often uses horizontal or vertical arrangement in the arrangement of light panels. Although this arrangement simplifies the production process to a certain extent, it is easy to cause uneven brightness or color of the display screen in the corresponding direction, that is, the brightness of the display screen is too high or too low in some areas, thus forming the so-called MURA phenomenon, which seriously affects the visual effect of the display screen and reduces the display quality.

[0050] In the present embodiment, a light-emitting structure is provided, including: a plurality of light-emitting array areas, a common vertex is provided between adjacent light-emitting array areas; the light-emitting array area is in a regular hexagon, and a light-emitting component is provided at the center point and each vertex of the light-emitting array area; and adjacent light-emitting components in the horizontal direction, vertical direction and oblique direction of the light-emitting structure have different crystal bonding angles. In the embodiment of the present application, when adjacent light-emitting components are arranged at different crystal bonding angles, the light emitted by them will intersect from multiple directions; and this intersection can make the light more evenly distributed on the display screen, reducing the brightness or color unevenness caused by the arrangement in a single direction. Although different crystal bonding angles will cause the light emitted by the light-emitting components to form different brightness distributions on the screen. However, the embodiment of the present application realizes the staggered arrangement of the light-emitting components by arranging the light-emitting components at the center point and each vertex of the regular hexagonal light-emitting array area, so that these lights of different brightness can complement and balance each other, thereby achieving a more uniform brightness performance on the entire screen, thereby avoiding the occurrence of the MURA phenomenon and improving the display quality.

[0051] Based on this, the embodiment of the present application provides a light emitting structure 100, referring to Figure 2 , the light emitting structure 100 comprises: a plurality of light emitting array regions 110 , wherein adjacent light emitting array regions 110 are provided with a common vertex;

[0052] The light emitting array area 110 is in the shape of a regular hexagon, and a light emitting component 111 is disposed at the center point and each vertex of the light emitting array area 110;

[0053] Adjacent light emitting components 111 in the horizontal direction, the vertical direction and the oblique direction of the light emitting structure 100 have different die-bonding angles.

[0054] In a feasible embodiment, the light-emitting structure is composed of a plurality of closely arranged regular hexagonal light-emitting array areas, and each light-emitting array area shares vertices with its adjacent light-emitting array area; that is, except for the outermost light-emitting array area, each vertex of the inner light-emitting array area has a vertex of an adjacent light-emitting array area overlapped with it, thereby forming a closely connected network structure. Further, the center point and each vertex of each light-emitting array area are provided with a light-emitting component. This arrangement ensures that the light-emitting components arranged in the horizontal direction, vertical direction and oblique direction of the light-emitting structure are continuous and uniform. Furthermore, since the MURA phenomenon is usually caused by excessively high or low brightness in certain areas of the display screen, in order to avoid the occurrence of the MURA phenomenon, the embodiment of the present application sets the adjacent light-emitting components of the light-emitting structure in the horizontal direction, vertical direction and oblique direction to different solid crystal angles. In this way, the light emitted by the adjacent light-emitting components will intersect from multiple directions, so that the light is more evenly distributed on the display screen, reducing the brightness or color unevenness caused by the single-direction arrangement. At the same time, combined with the setting of the regular hexagonal light-emitting array area, the light-emitting components are staggered; in this way, these lights of different brightness can complement and balance each other, so as to achieve a more uniform brightness performance on the entire screen, thereby avoiding the occurrence of MURA phenomenon and improving display quality.

[0055] In a feasible implementation, the light-emitting structure includes light-emitting components with four kinds of die-bonding angles.

[0056] In a feasible embodiment, although the MURA problem can be effectively overcome by setting different crystal bonding angles, too many crystal bonding angles in the light-emitting structure will increase the difficulty and complexity of the production process, thereby causing a series of defects. For example, with the increase in the number of crystal bonding angles, the crystal bonding angle of each light-emitting component needs to be more precisely controlled, which not only puts higher requirements on the technical level of production workers, but also increases the uncertainty and error risk in the production process. At the same time, in order to achieve such high-precision control, enterprises may need to introduce higher-precision production equipment and technology, which will undoubtedly increase equipment costs and production costs and reduce overall production efficiency. In addition, multiple crystal bonding angles may increase the difficulty of aligning the light-emitting component with the substrate or other components, and inaccurate alignment may cause problems such as uneven light emission or poor connection, which will not only affect the performance and quality of the product, but also increase the failure rate and maintenance cost of the product. Finally, too many crystal bonding angles may also cause visual unevenness, because light-emitting components at different angles may have visual differences, thereby affecting the overall aesthetics and user experience of the product. Therefore, the light-emitting structure of the embodiment of the present application includes light-emitting components with four crystal bonding angles.

[0057] Exemplarily, the angle difference between the light emitting components at different die-bonding angles is 40-50°.

[0058] Exemplarily, the fixing angles of the light emitting assembly of the embodiment of the present application include: 355-5°, 40-50°, 85-95°, 130-140°.

[0059] For example, refer to Figure 2 The embodiments of the present application include: a light emitting component 111A with a die-bonding angle of 0°, a light emitting component 111B with a die-bonding angle of 45°, a light emitting component 111C with a die-bonding angle of 90°, and a light emitting component 111D with a die-bonding angle of 135°.

[0060] Exemplarily, the aligned vertices of each light emitting array region have the same crystal-bonding angle, while the adjacent vertices and the meta vertices have different crystal-bonding angles, and the center point of the light emitting array region has a different crystal-bonding angle from its vertices.

[0061] In a feasible implementation, the light-emitting component includes: a Mini LED chip and / or a Mini LED lamp bead.

[0062] In the present embodiment, a light-emitting structure is provided, including: a plurality of light-emitting array areas, a common vertex is provided between adjacent light-emitting array areas; the light-emitting array area is in a regular hexagon, and a light-emitting component is provided at the center point and each vertex of the light-emitting array area; and adjacent light-emitting components in the horizontal direction, vertical direction and oblique direction of the light-emitting structure have different crystal bonding angles. In the embodiment of the present application, when adjacent light-emitting components are arranged at different crystal bonding angles, the light emitted by them will intersect from multiple directions; and this intersection can make the light more evenly distributed on the display screen, reducing the brightness or color unevenness caused by the arrangement in a single direction. Although different crystal bonding angles will cause the light emitted by the light-emitting components to form different brightness distributions on the screen. However, the embodiment of the present application realizes the staggered arrangement of the light-emitting components by arranging the light-emitting components at the center point and each vertex of the regular hexagonal light-emitting array area, so that these lights of different brightness can complement and balance each other, thereby achieving a more uniform brightness performance on the entire screen, thereby avoiding the occurrence of the MURA phenomenon and improving the display quality.

[0063] A second aspect of the present application provides a backlight module, referring to Figure 3 , the backlight module 200 includes: a light emitting structure 100; the light emitting structure 100 includes: a plurality of light emitting array areas, and a common vertex is provided between adjacent light emitting array areas;

[0064] The light-emitting array area is in the shape of a regular hexagon, and the center point and each vertex of the light-emitting array area are provided with a light-emitting component 111;

[0065] Adjacent light emitting components 111 in the horizontal direction, the vertical direction and the oblique direction of the light emitting structure 100 have different die-bonding angles.

[0066] In a feasible implementation, the light-emitting structure includes light-emitting components with four kinds of die-bonding angles.

[0067] In a feasible implementation, the light-emitting component includes: a Mini LED chip and / or a Mini LED lamp bead.

[0068] In one possible implementation, referring to Figure 3 , the backlight module 200 further includes a light homogenizing plate 300 disposed on the light emitting side of the light emitting structure 100;

[0069] Reference Figure 4 , the light diffuser includes:

[0070] A diffusion layer 310, the diffusion layer 310 includes a plurality of embedded bubbles 311 and diffusion particles 312;

[0071] The first prism layer 320 is disposed on the light incident side of the diffusion layer 310, and the prism tips of the first prism layer 320 face the light incident direction;

[0072] The Fresnel structure 330 is disposed on the light-emitting side of the diffusion layer 310 .

[0073] For example, refer to Figure 5 In the conventional diffusion layer 313, the light emitted by the light-emitting component 111 (i.e., the light source) needs to rely on the diffusion particles 312 to diffuse the light. Although the uniform distribution of light can be achieved to a certain extent, the diffusion effect may not be ideal. This is because the diffusion particles 312 mainly affect the light through scattering, but the scattering angle and range may be limited, resulting in uneven light in some areas. At the same time, the propagation distance of light in the conventional diffusion layer 313 is short, and the light cannot be fully delayed and evenly propagated, resulting in a certain degree of unevenness when the light is emitted. In order to meet a certain light diffusion effect, the conventional diffusion layer 313 may require a relatively thick structure to accommodate a sufficient number of diffusion particles 312. This limits the applicability of the diffusion layer in ultra-thin backlight applications.

[0074] In one possible embodiment, referring to Figure 6, diffusion particles 312 and bubbles 311 are provided in the diffusion layer 310 of the embodiment of the present application at the same time. The introduced bubble 311 structure forms a double refractive index difference system with the substrate of the diffusion layer 310 and the diffused ions. This refractive index difference causes the light emitted by the light-emitting component 111 (i.e., the light source) to undergo multiple refractions and reflections in the diffusion layer 310, thereby increasing the propagation path and diffusion range of the light. The light is continuously scattered and homogenized during the propagation process, and the final emitted light is more uniform. At the same time, due to the introduction of the bubble 311 structure, the propagation path of the light in the diffusion layer 310 is effectively extended. Therefore, under the premise of maintaining the same light uniformity, the thickness of the mixed light cavity can be significantly reduced. This makes the diffusion layer 310 of the present application very suitable for ultra-thin backlight applications, which helps to achieve thinness and lightweight of the product.

[0075] Exemplarily, the basic material of the diffusion layer includes at least one of PS (polystyrene) material, PC (polycarbonate) material, MS material (polyacrylate organic-inorganic nanocomposite material), and PMMA (polymethyl methacrylate) material.

[0076] Exemplarily, the diffusing agent includes: TiO2 and / or SiO2.

[0077] Exemplarily, the diffusion layer may further include: a diffusion agent and / or a toughening agent.

[0078] In a feasible embodiment, the light homogenizer further includes a first prism layer disposed on the light incident side of the diffusion layer, wherein the prism tip of the first prism layer faces the light incident direction. Through the refraction and reflection of the first prism layer, more incident light can be effectively utilized, reducing the waste of light. At the same time, after the first prism layer divides the light into multiple rays and changes its propagation direction, these rays are scattered multiple times in the diffusion layer, which helps to achieve uniform distribution of light and avoids the phenomenon of uneven light intensity.

[0079] In a feasible embodiment, the light homogenizing plate further includes a Fresnel structure disposed on the light-emitting side of the diffusion layer. The Fresnel structure contains a periodic concentric arc structure, which can utilize the light-gathering principle of a spiral lens to convert most of the originally isotropic and chaotic light into forward light, effectively reducing the light-emitting viewing angle of the display screen, thereby achieving a better anti-peeping effect.

[0080] For example, refer to Figure 7 The periodic spiral curve of the Fresnel structure 330 is composed of concentric arcs 331 with equal intervals (△d), and the center of the central arc 331 corresponds to the center of the light-emitting component 111. The radius of the central arc 331 is r, and the radius of other adjacent arcs 331 (R n ) are:

[0081] R n=r+n×△d, where n=0, 1, 2, 3, etc.;

[0082] In a feasible implementation manner, the light homogenizing plate further includes: a second prism layer, which is arranged on the light emitting side of the diffusion layer, and the prism tips of the second prism layer face the light emitting direction.

[0083] In a feasible embodiment, the diffusion layer diffuses the light through multiple scattering, so that the light is evenly distributed inside the light homogenizer. The second prism layer on the light-emitting surface further fine-tunes the light. When the prism tip faces the light-emitting direction, the emitted light can be more concentrated within a specific angle range, making the light more uniform when emitted.

[0084] In a feasible implementation, the light homogenizing plate further includes: a quantum dot layer disposed between the Fresnel structure and the diffusion layer, the quantum dot layer including: red light quantum dots, wherein the red light wavelength of the red light quantum dots excited by light is 650-670 nm.

[0085] In a feasible embodiment, the wavelength of red light excited by the red light quantum dots of the quantum dot layer is 650-670nm; for example, the wavelength of red light excited by the red light quantum dots is: 650nm, 655nm, 660nm, 665nm, 670nm, etc. Red light within this wavelength range can change the imaging focus of the eye through a longer wavelength, so that the image of the object falls on the appropriate position of the retina, thereby achieving the effect of alleviating myopia and preventing and controlling myopia; at the same time, under the irradiation of low-intensity red light, the pressure on the lens is reduced, which can also relieve visual fatigue for the eyes; therefore, it is determined that the wavelength of red light excited by the red light quantum dots in the quantum dot film of the present application is 650-670nm.

[0086] In one feasible implementation, the quantum dot layer further includes: green light quantum dots.

[0087] In a feasible embodiment, the wavelength of green light emitted by the green light quantum dots of the quantum dot layer when excited by light is 506-582 nm; for example, 506 nm, 510 nm, 520 nm, 540 nm, 560 nm, 580 nm, 582 nm, etc.

[0088] In one feasible implementation, the quantum dot core of the green light quantum dots and / or the red light quantum dots includes: CdSe / CdS / ZnS.

[0089] In a feasible embodiment, green light quantum dots and red light quantum dots can be mixed in the base material of the quantum dot layer to obtain the quantum dot layer, wherein the base material of the quantum dot layer includes: at least one of PS (polystyrene) material, PC (polycarbonate) material, MS material (polyacrylate organic-inorganic nanocomposite material), and PMMA (polymethyl methacrylate) material. The quantum dot materials selected for the conventional quantum dot layer include: ZnCdSeS / ZnSe / ZnS, wherein the ZnSe layer of the quantum dot may not be able to effectively passivate the quantum dot core, resulting in the formation of dislocation structural defects and stress during the oxidation process, thereby inducing fluorescence quenching. The CdSe / CdS / ZnS quantum dots of the embodiment of the present application use the CdS layer as an intermediate layer, which can more effectively passivate the CdSe core and reduce direct contact with oxygen, thereby improving photochemical stability.

[0090] Optionally, the diameter of the quantum dot core of the red light quantum dot is greater than the diameter of the quantum dot core of the green light quantum dot. For example, the diameter of the quantum dot core of the red light quantum dot is 5 to 10 nm; wherein the larger size gives it a smaller quantum confinement effect, thereby reducing the band gap and effectively emitting red light. For example, the diameter of the quantum dot core of the green light quantum dot is 2 to 5 nm; wherein the smaller particle size leads to an increased quantum confinement effect and an increased band gap, so that the emission wavelength is in a shorter wavelength region (i.e., the green light region).

[0091] Optionally, the quantum dot core of the red quantum dot may be a hexagonal or cubic crystal structure, thereby being able to stabilize the optical properties on larger particles. The quantum dot core of the green quantum dot may be a hexagonal structure.

[0092] In a feasible embodiment, the light homogenizing plate further includes: at least one substrate layer, which is disposed on one side or two opposite sides of at least one functional layer, wherein the functional layer includes: a diffusion layer, a first prism layer, a Fresnel structure and a quantum dot layer.

[0093] Exemplarily, the base material of the substrate layer may include at least one of PS (polystyrene) material, PC (polycarbonate) material, MS material (polyacrylate organic-inorganic nanocomposite material), and PMMA (polymethyl methacrylate) material.

[0094] Exemplarily, the substrate layer may further include: diffusion particles, diffusing agents, toughening agents, etc. to improve the layer performance.

[0095] Exemplarily, the diffusion particles added to the substrate layer may include TiO2 and / or SiO2.

[0096] For example, refer to Figure 8, a backlight module is provided, the backlight module includes a light diffuser 300 arranged on the light emitting side of the light emitting structure, and the light diffuser 300 includes:

[0097] A first prism layer 320, wherein the prism tips of the first prism layer 320 face the incident light direction;

[0098] A first substrate layer 350;

[0099] A diffusion layer 310, the diffusion layer 310 includes a plurality of embedded bubbles 311 and diffusion particles 312;

[0100] A second substrate layer 360;

[0101] The quantum dot layer 340 includes: red light quantum dots 341 and green light quantum dots 342, the red light wavelength of the red light quantum dots 341 is 650-670nm; the green light wavelength of the green light quantum dots 342 is 506-582nm;

[0102] A third substrate layer 370;

[0103] Fresnel structure 330.

[0104] Exemplarily, a backlight module is provided, which includes a light homogenizing plate arranged on the light emitting side of the light emitting structure, and the light homogenizing plate includes: a first prism layer, a first substrate layer, a diffusion layer, a quantum dot layer, and a Fresnel structure arranged in sequence along the light emitting direction.

[0105] Exemplarily, a backlight module is provided, which includes a light homogenizing plate arranged on the light emitting side of the light emitting structure, and the light homogenizing plate includes: a first prism layer, a diffusion layer, a second substrate layer, a quantum dot layer, and a Fresnel structure arranged in sequence along the light emitting direction.

[0106] Exemplarily, a backlight module is provided, which includes a light homogenizing plate arranged on the light emitting side of the light emitting structure, and the light homogenizing plate includes: a first prism layer, a diffusion layer, a quantum dot layer, a third substrate layer, and a Fresnel structure arranged in sequence along the light emitting direction.

[0107] Exemplarily, a backlight module is provided, which includes a light homogenizing plate arranged on the light emitting side of the light emitting structure, and the light homogenizing plate includes: a first prism layer, a first substrate layer, a diffusion layer, a second substrate layer, a quantum dot layer, and a Fresnel structure arranged in sequence along the light emitting direction.

[0108] Exemplarily, a backlight module is provided, which includes a light homogenizing plate arranged on the light emitting side of the light emitting structure, and the light homogenizing plate includes: a first prism layer, a first substrate layer, a diffusion layer, a quantum dot layer, a third substrate layer, and a Fresnel structure arranged in sequence along the light emitting direction.

[0109] Exemplarily, a backlight module is provided, which includes a light homogenizing plate arranged on the light emitting side of the light emitting structure, and the light homogenizing plate includes: a first prism layer, a diffusion layer, a second substrate layer, a quantum dot layer, a third substrate layer, and a Fresnel structure arranged in sequence along the light emitting direction.

[0110] A third aspect of the embodiments of the present application provides a display panel, the display panel comprising: a light emitting structure;

[0111] The light-emitting structure comprises: a plurality of light-emitting array regions, wherein a common vertex is provided between adjacent light-emitting array regions;

[0112] The light-emitting array area is in the shape of a regular hexagon, and light-emitting components are arranged at the center point and each vertex of the light-emitting array area;

[0113] Adjacent light-emitting components in the horizontal direction, vertical direction and oblique direction of the light-emitting structure have different die-bonding angles.

[0114] In a feasible implementation, the light-emitting structure includes light-emitting components with four kinds of die-bonding angles.

[0115] In a feasible implementation, the light-emitting component includes: a Mini LED chip and / or a Mini LED lamp bead.

[0116] In one feasible implementation, the display panel includes: a backlight module, the backlight module includes a light emitting structure and a light diffuser disposed on the light emitting side of the light emitting structure, the light diffuser includes:

[0117] a diffusion layer, the diffusion layer comprising a plurality of embedded bubbles and diffusion particles;

[0118] A first prism layer is disposed on the light incident side of the diffusion layer, and the prism tips of the first prism layer face the light incident direction;

[0119] The Fresnel structure is arranged on the light-emitting side of the diffusion layer.

[0120] In one feasible implementation, the light diffuser further includes:

[0121] The quantum dot layer is arranged between the Fresnel structure and the diffusion layer, and the quantum dot layer includes red light quantum dots, wherein the wavelength of red light excited by the red light quantum dots is 650-670nm.

[0122] In one feasible implementation, the quantum dot layer further includes: green light quantum dots;

[0123] The quantum dot core of the green light quantum dot and / or the red light quantum dot includes: CdSe / CdS / ZnS.

[0124] In one feasible implementation, the light diffuser further includes:

[0125] At least one substrate layer is disposed on one side or two opposite sides of at least one functional layer, wherein the functional layer includes: a diffusion layer, a first prism layer, a Fresnel structure and a quantum dot layer.

[0126] In one feasible implementation, the light diffuser further includes:

[0127] The second prism layer is arranged on the light-emitting side of the diffusion layer, and the prism tips of the second prism layer face the light-emitting direction.

[0128] The above are only preferred embodiments of the present application, and do not limit the scope of the present application. For those skilled in the art, the present application may have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of patent protection of the present application.

Claims

1. A light emitting structure, characterized in that: The light emitting structure comprises: a plurality of light emitting array regions, wherein adjacent light emitting array regions are provided with a common vertex; The light-emitting array area is in the shape of a regular hexagon, and a light-emitting component is disposed at the center point and each vertex of the light-emitting array area; Adjacent light-emitting components in the horizontal direction, the vertical direction and the oblique direction of the light-emitting structure have different die-bonding angles.

2. The light emitting structure according to claim 1, characterized in that: The light-emitting structure includes light-emitting components with four kinds of die-fixing angles.

3. The light emitting structure according to claim 1 or 2, characterized in that: The light-emitting component includes: Mini LED chips and / or Mini LED lamp beads.

4. A backlight module, characterized in that: The backlight module includes the light emitting structure according to any one of claims 1 to 3.

5. The backlight module according to claim 4, characterized in that: The backlight module further includes a light diffuser disposed on the light emitting side of the light emitting structure, and the light diffuser includes: a diffusion layer, the diffusion layer comprising a plurality of embedded bubbles and diffusion particles; A first prism layer is disposed on the light incident side of the diffusion layer, and the prism tips of the first prism layer face the light incident direction; The Fresnel structure is arranged on the light-emitting side of the diffusion layer.

6. The backlight module according to claim 5, characterized in that: The light diffuser also includes: The quantum dot layer is arranged between the Fresnel structure and the diffusion layer, and the quantum dot layer comprises red light quantum dots, wherein the red light wavelength of the red light quantum dots excited by light is 650-670nm.

7. The backlight module according to claim 6, wherein: The quantum dot layer further comprises: green light quantum dots; The quantum dot core of the green light quantum dot and / or the red light quantum dot includes: CdSe / CdS / ZnS.

8. The backlight module according to claim 6, wherein: The light diffuser also includes: At least one substrate layer is disposed on one side or two opposite sides of at least one functional layer, wherein the functional layer includes: the diffusion layer, the first prism layer, the Fresnel structure and the quantum dot layer.

9. The backlight module according to claim 6, wherein: The light diffuser also includes: The second prism layer is arranged on the light-emitting side of the diffusion layer, and the prism tips of the second prism layer face the light-emitting direction.

10. A display panel, characterized in that: The display panel comprises: the light emitting structure according to any one of claims 1 to 3, or the backlight module according to any one of claims 4 to 9.

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