CN115862480A

CN115862480A - Spliced panel assembly, backlight module and display device

Info

Publication number: CN115862480A
Application number: CN202211526677.XA
Authority: CN
Inventors: 季国飞; 袁海江
Original assignee: HKC Co Ltd
Current assignee: HKC Co Ltd
Priority date: 2022-11-30
Filing date: 2022-11-30
Publication date: 2023-03-28

Abstract

The application relates to a spliced panel assembly, a backlight module and a display device. This concatenation formula panel components is including two at least luminescent panels of mutual concatenation, and every luminescent panel includes the base plate and sets up a plurality of light sources that are array distribution on the base plate, is formed with the piece between two adjacent luminescent panels, and wherein, concatenation formula panel components is still including setting up the first optical element who deviates from one side of base plate in the light source, a plurality of light sources include with the adjacent first light source of piece, the orthographic projection of first optical element on the base plate covers the piece and is located the first light source of piece both sides, and the light of first light source transmission is with predetermined visual angle outgoing behind first optical element. This concatenation formula panel components can compromise the peep-proof effect when solving concatenation department shadow problem.

Description

Spliced panel assembly, backlight module and display device

Technical Field

The application relates to the technical field of display, in particular to a splicing type panel assembly, a backlight module and a display device.

Background

With the development of technology, large-sized display devices are becoming more and more popular and applied. A large-sized display device such as a bank self-service terminal needs to have a peep-proof function to protect personal privacy. However, a large-size display device is generally formed by splicing a plurality of small-size display screens, and a shadow is easily generated at the spliced position, so that the display effect is affected.

Disclosure of Invention

The application aims at providing a concatenation formula panel components, backlight unit and display device, and it can compromise the peep-proof function when solving concatenation department shadow problem.

In a first aspect, the embodiment of the application provides a concatenation formula panel assembly, including two at least luminescent panels of mutual concatenation, every luminescent panel includes the base plate and sets up a plurality of light sources that are array distribution on the base plate, is formed with the piece between two adjacent luminescent panels, wherein, concatenation formula panel assembly still including set up in the first optical element that the light source deviates from one side of base plate, a plurality of light sources include with the adjacent first light source of piece, the first light source that first optical element covers the piece and is located the piece both sides is covered in the orthographic projection of base plate, and the light of first light source transmission is with predetermined visual angle outgoing behind first optical element.

In a possible implementation manner, the first optical element includes two first lenses symmetrically distributed with respect to the abutted seam, a second lens covering the two first lenses, and a third lens covering the second lens, the first lens has a first arc-shaped surface protruding toward the light-emitting side, the second lens has a second arc-shaped surface protruding toward the light-emitting side, the third lens has a third arc-shaped surface protruding toward the light-emitting side and having a predetermined viewing angle, and the first light sources of the two adjacent light-emitting panels are respectively disposed corresponding to the two first lenses.

In a possible embodiment, the angle of the central angle corresponding to the first arc-shaped surface is greater than the angle of the central angle corresponding to the second arc-shaped surface, and the angle of the central angle corresponding to the second arc-shaped surface is greater than the angle of the predetermined viewing angle corresponding to the third arc-shaped surface.

In a possible embodiment, the third lens further includes a first light shielding surface and a second light shielding surface which are oppositely arranged, and the third arc-shaped surface is located between the first light shielding surface and the second light shielding surface.

In one possible embodiment, the first light shading surface and the second light shading surface are frosted surfaces; or the first light shading surface and the second light shading surface are provided with black coatings.

In a possible implementation manner, the spliced panel assembly further comprises a second optical element arranged on the side of the light source, which faces away from the substrate, and the second optical element comprises a fourth lens and a fifth lens which are sequentially arranged in a staggered manner along a direction perpendicular to the splicing seam; the plurality of light sources also comprise second light sources and third light sources which are sequentially arranged in a staggered manner along the direction perpendicular to the splicing seams, the fourth lens is arranged corresponding to the second light sources, and the fifth lens is arranged corresponding to the third light sources; the fourth lens is used for scattering the light emitted by the second light source, and the fifth lens is used for collimating the light emitted by the third light source.

In one possible embodiment, the fourth lens has a fourth arc-shaped surface convex toward the light exit side, and the fifth lens is a fresnel lens.

In one possible embodiment, the tiled panel assembly further includes a circuit board and a first switch and a second switch disposed on the circuit board, the first switch being electrically connected to the second light source, and the second switch being electrically connected to the third light source.

In a second aspect, an embodiment of the present application further provides a backlight module including the tiled panel assembly as described above.

In a third aspect, an embodiment of the present application further provides a display device, which includes the tiled panel assembly as described above.

According to concatenation formula panel components, backlight unit and display device that this application embodiment provided, including two at least luminescent panels of mutual concatenation, every luminescent panel includes the base plate and sets up a plurality of light sources that are array distribution on the base plate, be formed with the piece between two adjacent luminescent panels, wherein, concatenation formula panel components is still including setting up the first optical element who deviates from one side of base plate in the light source, a plurality of light sources include the first light source adjacent with the piece, the first light source that first optical element covers the piece and is located the piece both sides is covered in the orthographic projection of base plate, and the light of first light source transmission is with predetermined visual angle outgoing behind first optical element. Through set up first optical element above the piece together, can with the emergent with predetermined visual angle of the light of the first light source emission of piece together both sides, both can solve the shadow problem of concatenation department, can compromise the peep-proof function simultaneously, improve jumbo size display device's display effect.

Drawings

Features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings. In the drawings, like parts are provided with like reference numerals. The drawings are not necessarily to scale, and are merely intended to illustrate the relative positions of the layers, the thicknesses of the layers in some portions being exaggerated for clarity, and the thicknesses in the drawings are not intended to represent the proportional relationships of the actual thicknesses.

FIG. 1 is a schematic structural view of a tiled panel assembly provided in a first embodiment of the present application;

FIG. 2 shows a cross-sectional view of FIG. 1 along the direction M-M;

FIG. 3 shows a schematic view of a light emitting panel of the tiled panel assembly of FIG. 1;

FIG. 4 shows a cross-sectional view of FIG. 3 in the direction N-N;

FIG. 5 is a schematic structural view of a tiled panel assembly provided in a second embodiment of the present application;

FIG. 6 shows a schematic view of a light emitting panel of the tiled panel assembly of FIG. 5;

fig. 7 is a schematic structural diagram of a backlight module and a liquid crystal display device including the backlight module according to a third embodiment of the present disclosure.

Description of reference numerals:

1. a light emitting panel; 10. a substrate;

11. a first optical element; 111. a first lens; a1, a first arc-shaped surface; 112. a second lens; a2, a second arc-shaped surface; 113. a third lens; a3, a third arc-shaped surface; b1, a first shading surface; b2, a second shading surface;

12. a second optical element; 121. a fourth lens; 122. a fifth lens; a4, a fourth arc-shaped surface;

13. a light source; 131. a first light source; 132. a second light source; 133. a third light source; 14. a backlight plate; 15. a rubber frame;

2. a liquid crystal display panel; 21. an array substrate; 22. a color film substrate; 3. an upper polarizer; 4. and a lower polarizer.

Detailed Description

Features and exemplary embodiments of various aspects of the present application will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by illustrating examples thereof. In the drawings and the following description, at least some well-known structures and techniques have not been shown in detail in order to avoid unnecessarily obscuring the present application; also, the size of the region structures may be exaggerated for clarity. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

FIG. 1 is a schematic structural diagram of a tiled panel assembly provided by an embodiment of the present application; fig. 2 shows a cross-section of fig. 1 in the direction M-M.

As shown in fig. 1 and fig. 2, the present embodiment provides a tiled panel assembly, including at least two light-emitting panels 1 tiled with each other, where each light-emitting panel 1 includes a substrate 10 and a plurality of light sources 13 disposed on the substrate 10 and distributed in an array, and a seam L is formed between two adjacent light-emitting panels 1.

The tiled panel assembly further includes a first optical element 11 disposed on a side of the light source 13 away from the substrate 10, the light sources 13 include a first light source 131 adjacent to the seam L, an orthographic projection of the first optical element 11 on the substrate 10 covers the seam L and the first light sources 131 on two sides of the seam L, and light emitted by the first light source 131 exits at a predetermined viewing angle after passing through the first optical element 11.

The Light source 13 may be a Light-Emitting Diode (LED) of a conventional size, or may be any one of a Micro-LED (Micro-LED) or a submillimeter LED (Mini-LED). The Micro-LED refers to an LED chip with the grain size of less than 100 microns, and the Mini-LED refers to an LED chip with the grain size of about 100-300 microns. The LED, the Mini-LED or the Micro-LED can be used as a self-luminous light emitting element for display, and has the advantages of low power consumption, high brightness, high resolution, high color saturation, high reaction speed, long service life, high efficiency and the like.

In one example, at least two light emitting panels 1 are horizontally joined to each other, a joint L is formed between two adjacent light emitting panels 1, each light emitting panel 1 is provided with a first light source 131 near the joint L, and the first light sources 131 may be one or more columns. As shown in fig. 1, three light-emitting panels 1 are horizontally spliced together to form two seams L, and each light-emitting panel 1 is provided with a row of first light sources 131 near the seam L.

For the spliced panel assembly, a seam L is inevitably formed between two adjacent light-emitting panels 1, and no light source 13 is arranged at the seam, so that a shadow is easily formed, a display picture is divided, the continuity and integrity of an image are damaged, and the display effect is influenced. For this reason, in the embodiment of the present application, the first optical element 11 is additionally arranged on the side of the light source 13 away from the substrate 10, and the orthographic projection of the first optical element 11 on the substrate 10 covers the seam L and the first light sources 131 located on both sides of the seam L, for example, two or more rows of the first light sources 131 located on both sides of the seam L, that is, one or more rows of the first light sources 131 of each light emitting panel 1 near the seam L are covered by the orthographic projection of the first optical element 11 on the substrate 10, so that the light emitted by the two or more rows of the first light sources 131 on both sides of the seam L is emitted at a predetermined viewing angle after passing through the first optical element 11, and the emitted light can illuminate the seam to eliminate shadows; meanwhile, the light rays at the seam L are emitted at a preset visual angle, so that people outside the preset visual angle range cannot receive the emitted light rays, and the peep-proof function can be realized.

According to the concatenation formula panel components that this application embodiment provided, including two at least luminescent panels 1 of mutual concatenation, every luminescent panel 1 includes base plate 10 and sets up and be a plurality of light sources 13 that the array distributes on base plate 10, be formed with piece L between two adjacent luminescent panels 1, wherein, concatenation formula panel components still includes the first optical element 11 who sets up in the one side that light source 13 deviates from base plate 10, a plurality of light sources 13 include the first light source 131 adjacent with piece L, first optical element 11 covers piece L and is located the first light source 131 of piece L both sides at the orthographic projection on base plate 10, and the light that first light source 131 emitted is with predetermined visual angle outgoing behind first optical element 11. Through setting up first optical element 11 above piece L, can with the emergent with predetermined visual angle of the light of the first light source 131 emission of piece L both sides, both can solve the shadow problem of concatenation department, can compromise the peep-proof function simultaneously, improve jumbo size display device's display effect.

The following describes in detail a specific structure of a tiled panel assembly provided in an embodiment of the present application with reference to the accompanying drawings.

As shown in fig. 2, the first optical element 11 includes two first lenses 111 symmetrically distributed with respect to the seam L, a second lens 112 covering the two first lenses 111, and a third lens 113 covering the second lens 112, the first lens 111 has a first arc-shaped surface A1 protruding toward the light-emitting side, the second lens 112 has a second arc-shaped surface A2 protruding toward the light-emitting side, the third lens 113 has a third arc-shaped surface A3 protruding toward the light-emitting side and having a predetermined viewing angle, and the light sources 13 on both sides of the seam L of the adjacent two light-emitting panels 1 are respectively disposed corresponding to the two first lenses 111.

Specifically, the two first lenses 111, the second lens 112 and the third lens 113 are of an integrally formed structure, light emitted by the light sources 13 on two sides of the splice L is respectively diffused by the first arc-shaped surfaces A1 of the two first lenses 111 symmetrically distributed relative to the splice L, the two diffused light beams are uniformly mixed and then diffused by the second arc-shaped surface A2 of the second lens 112, and the third arc-shaped surface A3 of the third lens 113 with a predetermined visual angle further diffuses and then emits the light beams, so that a light receiving effect is achieved, and a peeping prevention effect can be better achieved.

Further, the angle of the central angle corresponding to the first arc-shaped surface A1 is greater than the angle of the central angle corresponding to the second arc-shaped surface A2, and the angle of the central angle corresponding to the second arc-shaped surface A2 is greater than the angle of the predetermined viewing angle corresponding to the third arc-shaped surface A3, so that the large-viewing-angle light emitted by the light sources 13 on the two sides of the splicing seam L can be gradually collected and emitted at a smaller predetermined viewing angle.

In one example, the angle of the central angle, i.e., the predetermined viewing angle, corresponding to the third arc-shaped face A3 of the third lens 113 is 100 ° ± 10 °; the second arc-shaped surface A2 of the second lens 112 corresponds to a central angle of 120 ° ± 10 °, and the first arc-shaped surface A1 of the first lens 111 corresponds to a central angle of 130 ° ± 10 °.

In some embodiments, the third lens 113 further includes a first light shielding surface B1 and a second light shielding surface B2 disposed oppositely, and the third arc-shaped surface A3 is located between the first light shielding surface B1 and the second light shielding surface B2.

In order to ensure that the light rays with a large viewing angle emitted by the light sources 13 at both sides of the splice L exit at a predetermined viewing angle after passing through the third lens 113 of the first optical element 11, but do not exit from other directions, the third lens 113 further includes a first light shielding surface B1 and a second light shielding surface B2 at both sides of the third arc-shaped surface A3, and the first light shielding surface B1 and the second light shielding surface B2 are used for preventing the light rays from exiting.

Further, in one example, the first light shielding surface B1 and the second light shielding surface B2 are frosted surfaces, and the frosted surfaces can prevent light from passing through or only pass through weak light.

In another example, the first light-shielding surface B1 and the second light-shielding surface B2 are provided with a black coating. The black coating layer can prevent light from passing through, and reflects light reaching the first light shielding surface B1 and the second light shielding surface B2 to the third arc surface A3, thereby improving the light transmittance of the third lens 113.

FIG. 3 shows a schematic view of a light emitting panel of the tiled panel assembly of FIG. 1; fig. 4 shows a cross-section along the direction N-N of fig. 3.

In some embodiments, the tiled panel assembly further includes a second optical element 12 disposed on a side of the light source 13 facing away from the substrate 10, and the second optical element 12 includes a fourth lens 121 and a fifth lens 122 disposed alternately in sequence along a direction perpendicular to the seam L.

The plurality of light sources 13 further include second light sources 132 and third light sources 133 that are sequentially staggered in a direction perpendicular to the seam L, that is, the plurality of second light sources 132 and the plurality of third light sources 133 are sequentially staggered in the horizontal direction and the vertical direction. The fourth lens 121 is disposed to correspond to the second light source 132, and the fifth lens 122 is disposed to correspond to the third light source 133. The fourth lens 121 is used for scattering the light emitted by the second light source 132, and the fifth lens 122 is used for collimating the light emitted by the third light source 133.

Taking the light-emitting panel 1 located in the middle of the three light-emitting panels 1 spliced with each other in the horizontal direction in fig. 1 as an example, as shown in fig. 3, two side edges of the light-emitting panel 1 in the horizontal direction are respectively provided with a row of first light sources 131, and second light sources 132 and third light sources 133 staggered in sequence in a direction perpendicular to the splice L are also provided, that is, in the horizontal direction and the vertical direction, a plurality of second light sources 132 and a plurality of third light sources 133 staggered in sequence. Wherein the second light source 132 is labeled "a" and the third light source 133 is labeled "B". As shown in fig. 4, the fourth lens 121 over the second light source 132 is used for scattering the light emitted from the second light source 132, and the fifth lens 122 over the third light source 133 is used for collimating the light emitted from the third light source 133.

When the plurality of second light sources 132 labeled "a" are turned on and the plurality of third light sources 133 labeled "B" are turned off, the light emission panel 1 is in the wide viewing angle sharing mode; when the plurality of second light sources 132 labeled "a" are turned off and the plurality of third light sources 133 labeled "B" are turned on, the light emission panel 1 is in the privacy mode of a narrow viewing angle; when all the light sources 13 are lit, the light-emitting panel 1 is in the high-light outdoor mode.

Further, the fourth lens 121 has a fourth arc-shaped surface A4 protruding toward the light exit side, and the fifth lens 122 is a fresnel lens. The angle of the central angle corresponding to the fourth arc-shaped face A4 of the fourth lens 121 may be, for example, 130 ° ± 10 °, for scattering the light emitted from the second light source 132. The fifth lens 122 may refract the light emitted from the third light source 133 to be converted into a collimated light source.

Specifically, the fifth lens 122 is a Fresnel lens (Fresnel lens), also known as a screw lens, and is generally formed by injection molding a polyolefin material into a sheet, and may be made of glass. The Fresnel lens has a smooth surface on one surface and numerous concentric circular grains (Fresnel zones) on the other surface, but can achieve the effect of a convex lens, and the grains are designed according to the requirements of light interference and interference, relative sensitivity and receiving angle. The manufacturing principle of the Fresnel lens is as follows: since the refraction of light only occurs at the interface of the medium, and the thickness of the lens of the convex lens is relatively thick, the part of the light that travels straight in the glass will attenuate the light. The common convex lens can appear the phenomena of darkening and blurring of corners, if the straight-line transmission part can be removed, only the curved surface which is refracted is reserved, and a large amount of materials can be saved and the same light-gathering effect can be achieved. If the projection light source is parallel light, the brightness of all parts of the image can be kept consistent after the projection is converged.

In some embodiments, the tiled panel assembly further includes a circuit board and a first switch and a second switch disposed on the circuit board, the first switch electrically connected to the second light source 132 and the second switch electrically connected to the third light source 133. Therefore, the switching of various modes of wide and narrow visual angles and high brightness can be realized by independently controlling the opening and closing of the first switch and the second switch, and the display flexibility of the spliced panel assembly is improved.

Second embodiment

FIG. 5 is a schematic structural view of a tiled panel assembly provided in a second embodiment of the present application; fig. 6 is a schematic view showing a structure of a light emitting panel of the tiled panel assembly of fig. 5.

As shown in fig. 5 and 6, a tiled panel assembly provided in a second embodiment of the present application is similar in structure to the tiled panel assembly provided in the first embodiment, except that at least two light-emitting panels 1 are tiled with each other in the horizontal direction and the vertical direction, and a first light source 131 is provided near the seam L of each light-emitting panel 1.

Specifically, at least two light emitting panels 1 are joined to each other in the horizontal direction and the vertical direction, a seam L is formed between two adjacent light emitting panels 1, a first light source 131 is provided near the seam L for each light emitting panel 1, and the first light sources 131 may be one or more columns. As shown in fig. 5, six light-emitting panels 1 are joined to each other in the horizontal direction and the vertical direction, and each light-emitting panel 1 is provided with a column of the first light sources 131 near the joint L. The orthographic projection of the first optical element 11 on the substrate 10 covers the seam L and the first light sources 131 positioned at two sides of the seam L, and the light emitted by the first light sources 131 is emitted at a predetermined viewing angle after passing through the first optical element 11.

Further, the tiled panel assembly further includes a second optical element 12 disposed on a side of the light source 13 facing away from the substrate 10, and the second optical element 12 includes a fourth lens 121 and a fifth lens 122 disposed in a staggered manner in sequence along a direction perpendicular to the seam L. The plurality of light sources 13 further include second light sources 132 and third light sources 133 arranged in sequence in a staggered manner in a direction perpendicular to the seam L, the fourth lens 121 is arranged corresponding to the second light sources 132, and the fifth lens 122 is arranged corresponding to the third light sources 133. The fourth lens 121 is used for scattering the light emitted by the second light source 132, and the fifth lens 122 is used for collimating the light emitted by the third light source 133.

Taking the light-emitting panel 1 positioned in the middle of the first line among the six light-emitting panels 1 spliced with each other in the horizontal direction and the vertical direction in fig. 5 as an example, as shown in fig. 6, two side edges and a lower edge of the light-emitting panel 1 in the horizontal direction are provided with a column of first light sources 131 near the seam L, and second light sources 132 and third light sources 133 staggered in sequence in a direction perpendicular to the seam L are further provided. Wherein the second light source 132 is labeled "a" and the third light source 133 is labeled "B". As shown in fig. 4, the fourth lens 121 over the second light source 132 is used for scattering the light emitted from the second light source 132, and the fifth lens 122 over the third light source 133 is used for collimating the light emitted from the third light source 133.

It can be understood that, when a plurality of light-emitting panels 1 are spliced into more rows and columns, one or more columns of first light sources 131 are also arranged at the position, close to the splicing seam L, of the upper edge of the light-emitting panel 1, and the first optical element 11 is arranged above the first light sources 131, so that the shadow problem at the spliced position can be solved, the peep-proof function can be taken into consideration, and the display effect of the large-size display device can be improved.

Third embodiment

As shown in fig. 7, a backlight module and a display device including the backlight module are also provided in the third embodiment of the present application. The backlight module comprises any one of the spliced panel assemblies.

In this embodiment, the light-emitting panel 1 is a direct-type backlight module, the tiled panel assembly is a tiled backlight module, and a Liquid Crystal Display (LCD) panel is disposed on one side of the light-emitting surface. The LCD display panel may be an LCD display panel of any size, or a display panel of any size formed by mutually splicing a plurality of LCD display panels.

Since the LCD display panel 2 does not emit light, the backlight module is required to provide a light source with sufficient brightness and uniform distribution, so that the LCD display panel can normally display images. In order to realize the infinite splicing of a large screen or an ultra-large screen, the backlight module needs to be designed into a splicing structure. The substrate 10 is a printed circuit board electrically connected to the light source 13. The first optical element 11 and the second optical element 12 are arranged on a side of the light source 13 facing away from the printed circuit board.

As shown in fig. 7, the liquid crystal display panel 2 includes an array substrate 21 and a color filter substrate 22 which are oppositely disposed, and a liquid crystal layer disposed between the array substrate 21 and the color filter substrate 22, and the liquid crystal layer 3 includes a plurality of liquid crystal molecules, and the liquid crystal molecules are generally rod-shaped, and can flow like liquid and have certain crystal characteristics. When liquid crystal molecules are placed in an electric field, their alignment direction changes according to the change of the electric field.

Furthermore, the display device further includes an upper polarizer 3 located on one side of the light-emitting surface of the liquid crystal display panel 2, and a lower polarizer 4 located on one side of the backlight surface of the liquid crystal display panel 2. The lower polarizer 4 and the upper polarizer 3 may polarize incident light of the liquid crystal display panel 2 to allow transmission of light vibrating in only one direction.

The backlight module 1 further includes a backlight plate 14, the light source 13 is located on the backlight plate 14, the first optical assembly 11 and the second optical element 12 are located on one side of the light source 13 far away from the backlight plate 14, and the orthographic projection of the first optical assembly 11 on the backlight plate 11 covers the orthographic projection of the plurality of light sources 13 on the backlight plate 14.

The backlight plate 14 may be made of a metal material, such as any one of aluminum plate, aluminum alloy plate, or galvanized steel, and is manufactured by a process such as stamping. The metal material has better ductility, and can protect the backlight module from being broken easily under the impact of external force. The backlight plate 14 may also be made of plastic material, such as polyimide, polycarbonate, polyethersulfone, polyethylene terephthalate, polyethylene, etc., to reduce the weight and cost of the backlight module. The shape of the backlight plate 14 can be the same as the shape of the liquid crystal display panel 2 using the backlight module. For example, when the liquid crystal display panel 2 has a circular shape, the backlight unit 14 of the backlight module used therein also has a circular shape. The shape of the backlight 14 may vary from embodiment to embodiment.

In some embodiments, the backlight module further includes a glue frame 15, and the glue frame 15 is disposed around an edge of the backlight plate 14. The rubber frame 15 is usually made of plastic material, such as polycarbonate, and has good elasticity. In the transportation and use process of the backlight module, the rubber frame 15 can provide a good buffer effect for the structures such as the light source 13, the first optical assembly 11 and the second optical element 12, and prevent the structures such as the light source 13, the first optical assembly 11 and the second optical element 12 from directly impacting the backlight plate 14 to be damaged. Alternatively, the frame 15 and the backlight plate 14 may be separately manufactured and then adhered together by a double-sided tape. Alternatively, after the backlight plate 14 is formed by stamping, it may be formed as an insert by injection molding with the rubber frame 15.

It can be understood that the backlight module according to the embodiments of the present disclosure can be widely applied to provide light sources for various liquid crystal display panels, such as TN (Twisted Nematic) display panels, IPS (In-plane switching) display panels, VA (Vertical Alignment) display panels, and MVA (Multi-Domain Vertical Alignment) display panels.

In some embodiments, the light emitting panel 1 is an OLED display panel and the tiled panel assembly is a tiled OLED display device.

The substrate 10 may be made of a light-transmitting material such as glass or Polyimide (PI). The light source 13 may include a red light emitting element, a green light emitting element, and a blue light emitting element, and the light emitting layer is formed by forming RGB (red, green, and blue) three-color light emitting elements on the substrate 10 by evaporation.

The light source 13 includes a first electrode, a light emitting structure on the first electrode, and a second electrode on the light emitting structure. One of the first electrode and the second electrode is an anode, and the other is a cathode. The light emitting structure may further include at least one of a Hole Injection Layer (HIL), a Hole Transport Layer (HTL), an Electron Injection Layer (EIL), or an Electron Transport Layer (ETL).

In some embodiments, the light emitting panel 1 is an LED display panel and the tiled panel assembly is a tiled LED display.

The substrate 10 may be made of a light-transmitting material such as glass or Polyimide (PI). The light source 13 is a micro light emitting diode or a sub-millimeter light emitting diode. The Micro light emitting diode (Micro-LED) is an LED chip having a grain size of 100 micrometers or less, and the submillimeter light emitting diode (Mini-LED) is an LED chip having a grain size of about 100 to 300 micrometers. The Mini-LED/Micro-LED can be used as a self-luminous LED for display, and has the advantages of low power consumption, high brightness, high resolution, high color saturation, high reaction speed, long service life, high efficiency and the like. The light source 13 may include a red light emitting element, a green light emitting element, and a blue light emitting element, and the light emitting layers are formed by transferring RGB (red, green, and blue) three-color light emitting elements onto the substrate 10 by a transfer technique.

It should be readily understood that "on 8230" \ 8230on "," on 82303030, and "on 82308230; \ 8230on" \ 8230, and "on 8230;" on 8230, should be interpreted in the broadest sense in this application, such that "on 8230;" on 8230not only means "directly on something", but also includes the meaning of "on something" with intervening features or layers therebetween, and "above 8230or" above 8230 "\8230"; not only includes the meaning of "above something" or "above" but also includes the meaning of "above something" or "above" with no intervening features or layers therebetween (i.e., directly on something).

The term "layer" as used herein may refer to a portion of material that includes a region having a thickness. A layer may extend over the entire underlying or overlying structure or may have a smaller extent than the underlying or overlying structure. Furthermore, a layer may be a region of a continuous structure, homogeneous or heterogeneous, having a thickness less than the thickness of the continuous structure. For example, a layer may be located between the top and bottom surfaces of the continuous structure or between any pair of lateral planes at the top and bottom surfaces. The layers may extend laterally, vertically, and/or along a tapered surface.

The term "substrate" as used herein refers to a material upon which a subsequent layer of material is added. The substrate itself may be patterned. The material added atop the substrate may be patterned or may remain unpatterned. In addition, the substrate may comprise a wide range of materials, such as silicon, germanium, gallium arsenide, indium phosphide, and the like. Alternatively, the substrate may be made of a non-conductive material (e.g., glass, plastic, or sapphire wafer, etc.). The substrate may be a layer, may include one or more layers therein, and/or may have one or more layers located thereon, above and/or below. The layer may comprise a plurality of layers. For example, the interconnect layer may include one or more conductors and contact layers (within which contacts, interconnect lines, and/or vias are formed) and one or more dielectric layers.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A spliced panel component comprises at least two light-emitting panels spliced with each other, each light-emitting panel comprises a substrate and a plurality of light sources arranged on the substrate in an array distribution, a splice is formed between every two adjacent light-emitting panels, and the spliced panel component is characterized in that,

the spliced panel component further comprises a first optical element arranged on one side, deviating from the substrate, of the light source, the light sources comprise first light sources adjacent to the spliced seam, the orthographic projection of the first optical element on the substrate covers the spliced seam and the first light sources on two sides of the spliced seam, and light emitted by the first light sources is emitted at a preset visual angle after passing through the first optical element.

2. The tiled panel assembly of claim 1, wherein the first optical element includes two first lenses symmetrically distributed with respect to the tiled seam, a second lens covering the two first lenses, and a third lens covering the second lens, the first lenses have a first arc-shaped surface protruding toward the light-emitting side, the second lens has a second arc-shaped surface protruding toward the light-emitting side, the third lens has a third arc-shaped surface protruding toward the light-emitting side and having the predetermined viewing angle, and the first light sources of two adjacent light-emitting panels are respectively disposed corresponding to the two first lenses.

3. The tiled panel assembly of claim 2 wherein the first arcuate surface corresponds to a central angle that is greater than the central angle of the second arcuate surface, and the second arcuate surface corresponds to a central angle that is greater than the predetermined viewing angle of the third arcuate surface.

4. The tiled panel assembly of claim 2 wherein the third lens further includes first and second oppositely disposed matte surfaces, the third arcuate surface being positioned between the first and second matte surfaces.

5. The tiled panel assembly of claim 4 wherein the first and second light-blocking faces are frosted faces; or the first shading surface and the second shading surface are provided with black coatings.

6. The tiled panel assembly of claim 1 further comprising a second optical element disposed on a side of the light source facing away from the substrate, the second optical element including fourth and fifth lenses staggered in sequence in a direction perpendicular to the seam;

the plurality of light sources further comprise second light sources and third light sources which are sequentially arranged in a staggered mode in the direction perpendicular to the splicing seams, the fourth lens is arranged corresponding to the second light sources, and the fifth lens is arranged corresponding to the third light sources;

the fourth lens is used for scattering the light emitted by the second light source, and the fifth lens is used for collimating the light emitted by the third light source.

7. The tiled panel assembly of claim 6 wherein the fourth lens has a fourth arcuate face convex toward the light exit side, and the fifth lens is a Fresnel lens.

8. The tiled panel assembly of claim 6 further comprising a circuit board and a first switch and a second switch disposed on the circuit board, the first switch electrically connected to the second light source and the second switch electrically connected to the third light source.

9. A backlight module, comprising: the tiled panel assembly of any of claims 1 to 8.

10. A display device, comprising: the tiled panel assembly of any of claims 1 to 8.