CN112856263A

CN112856263A - Spliced lamp panel, preparation method thereof and display device

Info

Publication number: CN112856263A
Application number: CN202110230888.8A
Authority: CN
Inventors: 程希
Original assignee: TCL China Star Optoelectronics Technology Co Ltd
Current assignee: TCL China Star Optoelectronics Technology Co Ltd
Priority date: 2021-03-02
Filing date: 2021-03-02
Publication date: 2021-05-28

Abstract

The embodiment of the application discloses a spliced lamp panel, a preparation method thereof and a display device, wherein the spliced lamp panel comprises at least two LED lamp panels arranged in parallel and a reflection structure, and a splicing seam is arranged between every two adjacent LED lamp panels; the reflection structure is arranged on the light-emitting side of the LED lamp panel and covers the splicing seam. This application has improved the light utilization ratio of concatenation formula lamp plate piece department.

Description

Spliced lamp panel, preparation method thereof and display device

Technical Field

The application relates to the technical field of display, in particular to a spliced lamp panel, a manufacturing method of the spliced lamp panel and a display device.

Background

With the higher demand of the high-level TV market for image quality, the improvement of display image quality becomes a new demand of the high-level TV. At present, 8K OLEDs (organic light-Emitting diodes) are limited by the problems of compensation circuits, backplane technology, and driver design, and need to be developed. The Mini LED (Mini Light emitting Diode) is a brand new display technology, and has significant advantages in brightness and power consumption compared with the OLED.

Since the Mini LED backplane currently supports only a small size, when used as a backlight for a large-sized TV (75 inches, etc.), multiple tiles are often required to be spliced into a large size. Because the light reflectivity of the MiniLED back plate is low, in order to improve the light utilization rate of the MiniLED, a layer of white reflector (white reflector) is generally attached to the back plate, and the existing attaching method is to attach the white reflectors which are equal to the lamp plates in size to one lamp plate. But can have the piece between adjacent lamp plate and the lamp plate, because piece department does not have any shielding object, consequently the LED shines the unable reflection of light of piece department and goes back for the light utilization ratio of piece department is lower, and piece department luminance reduces, easily leads to piece department to appear the dark band, causes piece mura.

Disclosure of Invention

The embodiment of the application provides a spliced lamp panel, a preparation method of the spliced lamp panel and a display device, and aims to solve the mura phenomenon generated at the splicing seams of the spliced lamp panel.

The embodiment of the application provides a concatenation formula lamp plate, concatenation formula lamp plate includes:

the LED lamp panel comprises at least two LED lamp panels arranged in parallel, wherein a splicing seam is arranged between every two adjacent LED lamp panels; and

and the reflection structure is arranged on the light-emitting side of the LED lamp panel and covers the splicing seam.

Optionally, in some embodiments of the present application, the reflective structure includes a first reflective film and a second reflective film adjacent to two sides of the first reflective film, one of the first reflective film covers one of the splicing seams, and the other of the second reflective film corresponds to one of the LED lamp panels.

Optionally, in some embodiments of the application, each of the LED lamp panels includes a substrate and a plurality of LED chips that are sequentially disposed, and the second reflective film is attached to the corresponding substrate and exposes the plurality of LED chips.

Optionally, in some embodiments of the present application, the reflection structure includes a first reflection sheet, and the first reflection sheet corresponds to two adjacent LED lamp panels and covers a splicing seam between the two adjacent LED lamp panels.

Optionally, in some embodiments of the present application, the first reflective sheet includes a first portion, a second portion, and a third portion, the third portion being located between the first portion and the second portion, the first portion, the second portion, and the third portion being integrally formed;

the spliced lamp panel comprises a first LED lamp panel and a second LED lamp panel which are arranged adjacently, the first LED lamp panel comprises a first substrate and a plurality of first LED chips which are arranged in sequence, and the first part is attached to the first substrate and exposes the first LED chips; the second LED lamp panel comprises a second substrate and a plurality of second LED chips which are sequentially arranged; the second part is attached to the second substrate and exposes the second LED chips; the third portion covers a splicing seam between the first LED lamp panel and the second LED lamp panel.

Optionally, in some embodiments of the present application, a surface of the third portion near the splicing seam has a central line, the central line is parallel to an extending direction of the splicing seam, and the first portion and the second portion are symmetrical about the central line.

Optionally, in some embodiments of the present application, the reflective structure further includes a second reflective sheet, the second reflective sheet is adjacent to two sides of the first reflective sheet, one of the second reflective sheets is attached to a portion of the first substrate that is not attached by the first portion, and the other of the second reflective sheets is attached to a portion of the second substrate that is not attached by the second portion.

The embodiment of the application further provides a display device, the display device comprises a liquid crystal display panel and a backlight module, and the backlight module comprises the spliced lamp panel according to any one of the above embodiments.

The embodiment of the application further provides a manufacturing method of the spliced lamp panel, which comprises the following steps:

providing at least two LED lamp panels and a composite reflection structure, wherein each LED lamp panel comprises a substrate and a plurality of LED chips which are sequentially arranged, the composite reflection structure comprises a composite reflection sheet, and one composite reflection sheet corresponds to the two LED lamp panels;

splicing the adjacent LED lamp panels, wherein a splicing seam is formed between every two adjacent LED lamp panels; and

the composite reflector plate is attached to the corresponding two adjacent LED lamp panels on the base, the two adjacent LED lamp panels are exposed, and the composite reflector plate covers the splicing seams between the two adjacent LED lamp panels.

Optionally, in some embodiments of this application, the composite reflection sheet includes reflector sheet, glue film and release film that set gradually, with each the composite reflection sheet is attached adjacent two of correspondence the step on the basement of LED lamp plate includes:

tearing off the release film;

and attaching one surface with the adhesive layer in the composite reflector plate on the corresponding substrate, wherein the reflector plate covers the splicing seams between the two adjacent LED lamp panels.

The application provides a spliced lamp panel, a manufacturing method of the spliced lamp panel and a display device, wherein the spliced lamp panel comprises at least two LED lamp panels arranged side by side and a reflection structure, the reflection structure is arranged on the light emitting side of the LED lamp panels, every two adjacent LED lamp panels are provided with a splicing seam, and the reflection structure covers the splicing seam. This application is through setting up the reflection configuration in the concatenation formula lamp plate to make the reflection configuration cover the concatenation seam between the adjacent LED lamp plate, improved the light utilization ratio of concatenation seam department.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic top view of a first embodiment of a tiled lamp panel provided in the present application.

Fig. 2 is a schematic top view of a first embodiment of a reflective structure of a tiled lamp panel provided in the present application.

Fig. 3 is a schematic cross-sectional view of the tiled lamp panel shown in fig. 1 along the line a-a'.

Fig. 4 is a schematic top view of a second embodiment of the tiled lamp panel provided in the present application.

Fig. 5 is a schematic top view of a second embodiment of a reflective structure of a tiled lamp panel provided in the present application.

Fig. 6 is a schematic cross-sectional view of the tiled lamp panel shown in fig. 4 along line B-B'.

Fig. 7 is a schematic flowchart of a manufacturing method of a spliced lamp panel provided in the embodiment of the present application.

Fig. 8 is a schematic top view of a third embodiment of a tiled lamp panel provided in the present application.

Fig. 9 is a schematic top view of a third embodiment of a reflective structure of a tiled lamp panel provided in the present application.

Fig. 10 is a schematic cross-sectional view of the tiled lamp panel shown in fig. 8 along the line C-C'.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. Furthermore, it should be understood that the detailed description and specific examples, while indicating exemplary embodiments of the invention, are given by way of illustration and explanation only, and are not intended to limit the scope of the invention. In the present application, unless indicated to the contrary, the use of the directional terms "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, and more particularly to the orientation of the figures of the drawings; while "inner" and "outer" are with respect to the outline of the device.

The embodiment of the application provides a spliced lamp panel, a manufacturing method of the spliced lamp panel and a display device. The following are detailed below. It should be noted that the following description of the embodiments is not intended to limit the preferred order of the embodiments.

It should be noted that, in the spliced lamp panel of the present application, the number of the LED lamp panels may be two or more, and the following embodiments of the present application only use the number of the LED lamp panels as two for illustration, but should not be construed as limiting the present application.

In addition, the size of each LED lamp panel in the present application may be the same or different, and the following embodiments of the present application are described by taking only the LED lamp panels of the same size as an example, but not limited thereto.

In addition, the number of the LED chips in each LED lamp panel in the following embodiments of the present application is only an illustration for convenience of describing the embodiments of the present application, but is not to be construed as a limitation to the present application.

Referring to fig. 1 to fig. 3, a first embodiment of the present application provides a tiled lamp panel 100. The spliced lamp panel 100 includes two LED lamp panels 10 arranged in parallel and a reflection structure 20. A splice seam 10a is provided between the two LED lamp panels 10. The reflection structure 20 is disposed on the light-emitting side of the LED lamp panel 10. The reflective structure 20 covers the splice seam 10 a.

From this, this embodiment is through setting up reflection configuration 20 in concatenation formula lamp plate 100 to make reflection configuration 20 cover the concatenation seam 10a between two adjacent LED lamp plates 10, and then improved the light utilization ratio of concatenation seam 10a department.

Specifically, in the present embodiment, the reflective structure 20 includes a first reflective film 21 and second reflective films 22 adjacent to both sides of the first reflective film 21. The first reflective film 21 correspondingly covers a splice seam 10 a. Each second reflective film 22 corresponds to one LED lamp panel 10.

The first reflective film 21 and the second reflective film 22 are made of the same material, and both may be made of materials having high reflectivity. Specifically, the first reflective film 21 and the second reflective film 22 may be reflective films having a diffuse reflection function or reflective films having a specular reflection function. The material and type of the first reflective film 21 and the second reflective film 22 can be selected according to actual requirements, and the first reflective film 21 and the second reflective film 22 are both within the protection scope of the present application as long as the reflectivity of light can be improved.

In this embodiment, the first reflective film 21 and the second reflective film 22 are both reflective films with a diffuse reflection function, so as to improve uniformity of light emitted by each LED lamp panel 10. The specific structure of the reflective film with the diffuse reflection function may refer to the prior art, and is not described herein again.

In the present embodiment, each LED lamp panel 10 includes a substrate 11 and a plurality of LED chips 12 sequentially disposed. The second reflective films 22 are attached to the corresponding substrates 11, and expose the plurality of LED chips 12.

Wherein, the first reflective film 21 covers the splice seam 10a entirely. Each second reflective film 22 has a plurality of through holes 22A. The plurality of through holes 22A correspond one-to-one to the plurality of LED chips 12 in the corresponding LED lamp panel 10. The orthographic projection of each LED chip 12 on the plane of the substrate 11 is located in the orthographic projection of the hole wall of the corresponding through hole 22A on the plane of the substrate 11.

In some embodiments, the orthographic projection of each LED chip 12 on the plane of the substrate 11 may also overlap with the orthographic projection of the hole wall of the corresponding through hole 22A on the plane of the substrate 11, which is not described herein again.

It should be noted that the LED chip 12 in this embodiment may be a Mini LED chip or a Micro LED chip, which is not specifically limited in this application.

It can be understood that in the prior art, a reflective film is generally attached to improve the light reflectivity of the LED lamp panel. Specifically, through set up the through-hole that one-to-one corresponds to the LED chip on the reflectance coating in advance to improve the demand of lamp plate light reflectivity when attached in the basement. However, since the number of LED chips on the LED lamp panel is large and the LED chips are small in size, the difficulty of punching the reflective film is increased, so that the size of the available reflective film is limited. Therefore, the reflective film with the same size as the LED lamp panel is commonly used at present to improve the light reflectivity of the LED lamp panel. However, for the spliced LED lamp panels, because of the splicing seams existing between the spliced LED lamp panels, the reflective film cannot cover the splicing seams, so that the light utilization rate of the splicing seams is low, the brightness of the splicing seams is correspondingly low, and when the spliced LED lamp panels provide backlight for the liquid crystal display panel, the liquid crystal display panel can have dark bands at the positions corresponding to the splicing seams, thereby causing an obvious mura phenomenon.

To the above technical problem that appears in the prior art, this embodiment sets up independent first reflectance coating 21 above splicing seam 10a, has improved the light reflectivity of splicing seam 10a department for the light utilization ratio of splicing seam 10a department obtains improving, and then has improved the luminance of concatenation formula lamp plate 100 in splicing seam 10a department. When the spliced lamp panel 100 is applied to a liquid crystal display panel, a dark band at a position corresponding to the splice seam 10a of the liquid crystal display panel can be avoided, so that a mura phenomenon is avoided.

The preparation method of the spliced lamp panel comprises the following steps:

b101: providing two LED lamp panels, a first composite reflecting film and two second composite reflecting films;

each LED lamp panel comprises a substrate and a plurality of LED chips arranged on the substrate.

The first composite reflective film has a size smaller than that of the second composite reflective film. The size of the second composite reflecting film is slightly smaller than that of the LED lamp plate. The first composite reflective film comprises a first reflective film, a first adhesive layer and a first release film which are sequentially attached. The second composite reflective film comprises a second reflective film, a second adhesive layer and a second release film which are sequentially attached. Each second composite reflection film is provided with a plurality of through holes. The plurality of through holes at least penetrate through the second reflecting film and the second adhesive layer. And the through holes are in one-to-one correspondence to a plurality of LED chips in the corresponding LED lamp panel.

B102: splicing the two LED lamp panels, wherein a splicing seam is formed between the two LED lamp panels;

b103: tearing off a second release film in the second composite reflective film, and attaching one surface, provided with a second adhesive layer, of the second composite reflective film to the corresponding substrate;

each through hole penetrates through the corresponding LED chip, and the second reflecting film is attached to the corresponding substrate through the second adhesive layer.

B104: tear first from type membrane in the first compound reflectance coating, and will one side laminating that has first glue film in the first compound reflectance coating is in each the LED lamp plate is close to the one end of concatenation seam, first reflectance coating covers adjacent two concatenation seam between the LED lamp plate.

Wherein, because the size of the compound reflectance coating of second slightly is less than the size of LED lamp plate, consequently, when attached during first reflectance coating, the both ends overlap joint of first glue film is at each the tip of LED lamp plate, so that first reflectance coating passes through first glue film with correspond the tip of basement bonds, and covers the splice seam.

Referring to fig. 4 to 6, a tiled lamp panel 200 provided in a second embodiment of the present application includes a first LED lamp panel 31, a second LED lamp panel 32 and a reflective structure 40 that are arranged in parallel. A splice seam 30a is provided between the first LED lamp panel 31 and the second LED lamp panel 32. The reflection structure 40 is disposed on the light emitting sides of the first LED lamp panel 31 and the second LED lamp panel 32. The reflective structure 40 corresponds to the first LED lamp panel 31 and the second LED lamp panel 32, and covers the splicing seam 30 a.

From this, this embodiment is through setting up reflection configuration 40 in concatenation formula lamp plate 200 to make reflection configuration 40 correspond to first LED lamp plate 31 and second LED lamp plate 32, and cover concatenation seam 30a between first LED lamp plate 31 and the second LED lamp plate 32, and then improved the light utilization ratio of concatenation seam 30a department.

Specifically, in the present embodiment, the reflective structure 40 includes a first reflective sheet 41. The first reflector 41 corresponds to the first LED lamp panel 31 and the second LED lamp panel 32, and covers the splice seam 30a between the first LED lamp panel 31 and the second LED lamp panel 32.

The material of the first reflective sheet 41 may be a material with high reflectivity. Specifically, the first reflection sheet 41 may be a reflection sheet having a diffuse reflection function, or may be a reflection sheet having a specular reflection function. The material and type of the first reflective sheet 41 can be selected according to actual requirements, and it is within the scope of the present application as long as the first reflective sheet 41 can improve the utilization rate of light.

In this embodiment, the first reflective sheet 41 is a reflective sheet with a diffuse reflection function, so as to improve uniformity of light emitted by the LED chips in the first LED lamp panel 31 and the second LED lamp panel 32. The specific structure of the reflector plate with the diffuse reflection function may refer to the prior art, and is not described herein again.

In the present embodiment, the first reflection sheet 41 includes a first portion 411, a second portion 412, and a third portion 413. The third portion 413 is located between the first portion 411 and the second portion 412. The first portion 411, the second portion 412, and the third portion 413 are integrally formed.

The first LED lamp panel 31 includes a first substrate 311 and a plurality of first LED chips 312, which are sequentially disposed. The first portion 411 is attached to the first portion 3111 of the first substrate 311, and exposes the plurality of first LED chips 312 on the first portion 3111 of the first substrate 311. The first portion 411 has a plurality of first through holes 411A. The plurality of first through holes 411A correspond one-to-one to the plurality of exposed first LED chips 312.

Second LED lamp panel 32 includes second basement 321 and a plurality of second LED chip 322 that set gradually. The second portion 412 is attached to the first portion 3211 of the second substrate 321, and exposes the second LED chips 322 on the first portion 3211 of the second substrate 321. The second portion 412 defines a plurality of second through holes 412A. The second through holes 412A correspond to the exposed second LED chips 322 one by one.

The third portion 413 covers the splice seam 30a between the first LED lamp panel 31 and the second LED lamp panel 32.

It can be understood that in the prior art, a manner of attaching a reflector plate is generally adopted to improve the light reflectivity of the LED lamp panel. Specifically, through pre-opening the through holes corresponding to the LED chips one by one on the reflector plate, the requirement of improving the light reflectivity of the lamp panel when the reflector plate is attached to the substrate is met. However, because the number of the LED chips on the LED lamp panel is large and the LED chips are small in size, the difficulty in punching the reflector is increased, and the size of the available reflector is limited. Therefore, at present, the light reflectivity of the LED lamp panel is generally improved by using a reflector plate with the same size as the LED lamp panel. However, for the spliced LED lamp panels, due to the splicing seams existing between the spliced LED lamp panels, the reflective sheets cannot cover the splicing seams, so that the light utilization rate of the splicing seams is low, the brightness of the splicing seams is correspondingly low, and when the spliced LED lamp panels provide backlight for the liquid crystal display panel, the liquid crystal display panel can have dark bands at positions corresponding to the splicing seams, thereby causing an obvious mura phenomenon.

To the above technical problem that appears among the prior art, this embodiment is through making first reflector plate 41 correspond to two adjacent LED lamp plates, and cover concatenation seam 30a between two adjacent LED lamp plates, has improved the light reflectivity of concatenation seam 30a department, makes the light utilization ratio of concatenation seam department obtain promoting, and then has improved the luminance of concatenation formula lamp plate 200 in concatenation seam 30a department, when concatenation formula lamp plate 200 is applied to liquid crystal display panel, can avoid liquid crystal display panel to appear the dark band in the position corresponding to concatenation seam 30a department, thereby has avoided the emergence of mura phenomenon.

In the present embodiment, the reflective structure 40 further includes two second reflective sheets 42. The second reflection sheet 42 is adjacent to both sides of the first reflection sheet 41. The size of the second reflective sheet 42 is smaller than that of the first reflective sheet 41. The second reflective sheet 42 corresponds to end portions of the LED lamp panels at two ends of the tiled lamp panel 200.

Specifically, the two second reflective sheets 42 respectively correspond to the end portion of the first LED lamp panel 31 and the end portion of the second LED lamp panel 32. A second reflective sheet 42 is attached to the second portion 3112 of the first substrate 311, and exposes the first LED chips 312 on the second portion 3112 of the first substrate 311. The second portion 3112 of the first substrate 311 is disposed away from the splice seam 30 a. Another second reflective sheet 42 is attached to the second portion 3212 of the second substrate 321, and exposes the second LED chips 322 on the second portion 3212 of the second substrate 321. The second portion 3212 of the second substrate 321 is disposed distal to the splice seam 30 a.

From this, this embodiment can improve the holistic reflectance of light of concatenation formula lamp plate 200 through the combination of first reflector plate 41 and second reflector plate 42 to improve the holistic light utilization efficiency of concatenation formula lamp plate 200.

In this embodiment, a surface of the third portion 413 near the splice seam 30a has a centerline L. The median line L is parallel to the extension direction of the splicing seam 30 a. The first and

second portions

411 and 412 are symmetrical about the centerline L.

In some embodiments, the first portion 411 and the second portion 412 may also be disposed asymmetrically with respect to the centerline L, which is not described herein.

It should be noted that in the present embodiment, the material and the type of the second reflective sheet 42 are the same as those of the first reflective sheet 41, and are not described herein again.

Referring to fig. 7, an embodiment of the present application further provides a method for manufacturing a tiled lamp panel, which includes the following steps:

b201: providing at least two LED lamp panels and a composite reflection structure, wherein each LED lamp panel comprises a substrate and a plurality of LED chips which are sequentially arranged, the composite reflection structure comprises a composite reflection sheet, and one composite reflection sheet corresponds to the two LED lamp panels;

b202: splicing the adjacent LED lamp panels, wherein a splicing seam is formed between every two adjacent LED lamp panels;

b203: the composite reflector plate is attached to the corresponding two adjacent LED lamp panels on the base, the two adjacent LED lamp panels are exposed, and the composite reflector plate covers the splicing seams between the two adjacent LED lamp panels.

In addition, the present embodiment is described by taking the number of the LED lamp panels as two, but the present invention is not limited thereto.

In step B201, a first LED lamp panel and a second LED lamp panel are provided. The first LED lamp panel comprises a first substrate and a plurality of first LED chips which are arranged in sequence. The second LED lamp panel is including the second basement and a plurality of second LED chip that set gradually.

The composite reflective structure includes a first composite reflective sheet and a second composite reflective sheet. The size of the first composite reflection sheet is larger than that of the second composite reflection sheet. The size of first compound reflector plate equals respectively first LED lamp plate with the size of second LED lamp plate. The first composite reflection sheet comprises a first reflection sheet, a first adhesive layer and a first release film which are sequentially attached. The second composite reflector plate comprises a second reflector plate, a second adhesive layer and a second release film which are sequentially attached. The first composite reflection sheet comprises a first part, a second part and a third part which are integrally formed. The first portion is provided with a plurality of first through holes. The first through hole at least penetrates through the first reflection sheet and the first adhesive layer. The second part is provided with a plurality of second through holes. The second through hole at least penetrates through the second reflection sheet and the second adhesive layer.

In step B203, step B203 specifically includes:

b2031: and tearing off the first release film in the first composite reflector plate, and attaching one surface with a first adhesive layer in the first composite reflector plate to the parts, close to the splicing seams, of the first substrate and the second substrate.

The first through hole penetrates through the corresponding first LED chip on the first part of the first substrate, and part of the first reflector plate is attached to the first part of the first substrate through the first adhesive layer. The second through hole penetrates through the corresponding second LED chip on the first part of the second substrate, and the other part of the first reflection sheet is attached to the first part of the second substrate through the first adhesive layer. The third part between the first part and the second part covers a splicing seam between the first LED lamp panel and the second LED lamp panel.

B2032: and tearing off the second release film in the second composite reflector plate, and attaching one surface with a second adhesive layer in the second composite reflector plate to the first substrate and the part of the second substrate which is not attached by the first reflector plate.

Referring to fig. 8 to 10, a spliced lamp panel 300 according to a third embodiment of the present disclosure includes a first LED lamp panel 51, a second LED lamp panel 52 and a reflective structure 60, which are arranged in parallel. A splice seam 50a is formed between the first LED lamp panel 51 and the second LED lamp panel 52. The reflective structure 60 is disposed on the light emitting sides of the first LED lamp panel 51 and the second LED lamp panel 52. The reflective structure 60 corresponds to the first LED lamp panel 51 and the second LED lamp panel 52, and covers the splicing seam 50 a.

In the present embodiment, the reflective structure 60 includes a first reflective sheet 61. The first reflector sheet 61 corresponds to the first LED lamp panel 51 and the second LED lamp panel 52, and covers the splice seam 50a between the first LED lamp panel 51 and the second LED lamp panel 52.

The material of the first reflective sheet 61 may be a material with high reflectivity. Specifically, the first reflection sheet 61 may be a reflection sheet having a diffuse reflection function, or may be a reflection sheet having a specular reflection function. The material and type of the first reflective sheet 61 can be selected according to actual requirements, and the first reflective sheet 61 can be ensured to improve the utilization rate of light, which is within the protection scope of the present application.

In this embodiment, the first reflective sheet 61 is a reflective sheet with a diffuse reflection function to improve uniformity of light emitted from the LED chips in the first LED lamp panel 51 and the second LED lamp panel 52. The specific structure of the reflector plate with the diffuse reflection function may refer to the prior art, and is not described herein again.

In the present embodiment, the first reflection sheet 61 includes a first portion 611 and a second portion 612. The first portion 611 and the second portion 612 are integrally formed.

The first LED lamp panel 51 includes a first substrate 511 and a plurality of first LED chips 512, which are sequentially disposed. The first portion 611 is attached to the first substrate 511, and exposes the plurality of first LED chips 512 on the first substrate 511.

The second LED lamp panel 52 includes a second substrate 521 and a plurality of second LED chips 522 sequentially disposed. Second portion 612 covers a splice seam 50a between first LED lamp panel 51 and second LED lamp panel 52. An end of the second portion 612 close to the first portion 611 overlaps an end of the first substrate 511, and an end of the second portion 612 far from the first portion 611 overlaps an end of the second substrate 521.

In the present embodiment, the reflective structure 60 further includes a second reflective sheet 62. The second reflection sheet 62 is adjacent to the second portion 612 of the first reflection sheet 61. Specifically, the second reflection sheet 62 corresponds to a portion of the second LED lamp panel 52 that is not covered by the first reflection sheet 61. The size of the second reflection sheet 62 is equal to the size of the first portion 611 of the first reflection sheet 61. The second reflective sheet 62 is attached to the second substrate 511, and exposes the second LED chips 512 on the second substrate 511.

From this, this embodiment can improve the holistic light reflectivity of concatenation formula lamp plate 300 through the combination of first reflector plate 61 and second reflector plate 62 to improve the holistic light utilization ratio of concatenation formula lamp plate 300.

It should be noted that in the present embodiment, the material and the type of the second reflective sheet 62 are the same as those of the first reflective sheet 61, and are not described herein again.

In addition, the method for manufacturing the tiled lamp panel 300 of this embodiment may refer to the method for manufacturing the tiled lamp panel 200 of the second embodiment, and is not described herein again.

The embodiment of the application further provides a display device, the display device includes a liquid crystal display panel and a backlight module, the backlight module can be any one of the foregoing embodiments, the specific structure of the spliced lamp panel can refer to the foregoing embodiments, and the description is omitted here.

The spliced lamp panel, the manufacturing method thereof and the display device provided by the embodiment of the application are described in detail, a specific example is applied to explain the principle and the implementation mode of the application, and the description of the embodiment is only used for helping to understand the method and the core idea of the application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. The utility model provides a concatenation formula lamp plate, its characterized in that, concatenation formula lamp plate includes:

2. The tiled lamp panel of claim 1, wherein the reflective structure includes a first reflective film and a second reflective film adjacent to two sides of the first reflective film, one of the first reflective film covers a corresponding one of the stitching seams, and one of the second reflective film corresponds to one of the LED lamp panels.

3. The spliced lamp panel of claim 2, wherein each LED lamp panel comprises a substrate and a plurality of LED chips, the substrate and the LED chips are sequentially arranged, and the second reflective film is attached to the corresponding substrate and exposes the LED chips.

4. The spliced lamp panel of claim 1, wherein the reflective structure comprises a first reflector plate, and one first reflector plate corresponds to two adjacent LED lamp panels and covers a splicing seam between the two adjacent LED lamp panels.

5. The spliced lamp panel of claim 4, wherein the first reflector sheet comprises a first portion, a second portion and a third portion, the third portion is located between the first portion and the second portion, and the first portion, the second portion and the third portion are integrally formed;

6. The spliced lamp panel of claim 5, wherein a surface of the third portion adjacent to the splice seam has a centerline parallel to the direction of extension of the splice seam, and the first portion and the second portion are symmetrical about the centerline.

7. The tiled lamp panel of claim 5, wherein the reflective structure further comprises a second reflector sheet adjacent to both sides of the first reflector sheet, one of the second reflector sheets is attached to a portion of the first substrate that is not attached by the first portion, and the other of the second reflector sheets is attached to a portion of the second substrate that is not attached by the second portion.

8. A display device, comprising a liquid crystal display panel and a backlight module, wherein the backlight module comprises the spliced lamp panel as claimed in any one of claims 1 to 7.

9. A preparation method of a spliced lamp panel is characterized by comprising the following steps:

10. The method for manufacturing the spliced lamp panel according to claim 9, wherein the composite reflector plate comprises a reflector plate, an adhesive layer and a release film which are sequentially arranged, and the step of attaching each composite reflector plate to the substrate of the two corresponding adjacent LED lamp panels comprises the following steps:

tearing off the release film;