Reflective component and backlight module

Abstract

A reflective assembly is adapted to be applied on a lamp panel, the reflective assembly includes a plurality of reflective cavities and a plurality of spacers. Each of the reflective cavities has an upper opening, a lower opening and a peripheral wall, a bottom edge of the peripheral wall is disposed on a substrate of the lamp panel, and the lower opening of each of the reflective cavities corresponds to a light emitting component. Each of the spacers has a bottom surface, a first inclined surface and a second inclined surface, the bottom surface connects the first inclined surface and the second inclined surface, the bottom surface is disposed on the substrate and is flush with the bottom edge of the peripheral wall, and the first inclined surface and the second inclined surface serve as side walls of two adjacent reflective cavities. A height difference is formed between a top edge of the first inclined surface and a top edge of the second inclined surface of a part of the spacers. The present application also provides a backlight module including the aforementioned reflective assembly.

Description

TECHNICAL FIELD

[0001] The present invention relates to a backlight module, and more particularly to a reflection assembly and a backlight module using the same. BACKGROUND

[0002] Backlight modules can be classified into side-in backlight modules and direct backlight modules according to the positions of light sources. In a direct backlight module, light sources on a lamp panel are arranged in a matrix, a diffusion plate is placed on the lamp panel, and a light box distance between the lamp panel and the diffusion plate serves as a light mixing area. However, in the current direct backlight module, the brightness of a central area of a picture is higher than that of a peripheral area of the picture when all the light sources are bright, which results in less than 60% uniformity of the picture and affects the use efficiency of the backlight module. SUMMARY

[0003] The present invention provides a reflection assembly suitable for use in a backlight module. The reflection assembly has unequal-height top edges to change the uneven brightness of the backlight module and improve the uniformity of a picture of a display panel.

[0004] The present invention provides a reflection assembly suitable for use on a lamp panel. The lamp panel includes a substrate and a plurality of light emitting assemblies disposed on the substrate. The reflection assembly includes a plurality of reflection cavities and a plurality of spacers.

[0005] Each reflection cavity has an upper opening, a lower opening, and a peripheral wall. The peripheral wall bottom edge of the peripheral wall is connected to the substrate. The lower opening of each reflection cavity corresponds to one light emitting assembly. The peripheral wall of the reflection cavity includes a plurality of side walls. Each spacer has a bottom surface, a first inclined surface, and a second inclined surface. The bottom surface connects the first inclined surface and the second inclined surface. The spacer is disposed on the substrate. The bottom surface of each spacer is flush with the peripheral wall bottom edge of the peripheral wall of the reflection cavity. The first inclined surface and the second inclined surface serve as side walls of adjacent two reflection cavities. The top edge of the first inclined surface and the top edge of the second inclined surface of a portion of the spacers have a height difference.

[0006] In an embodiment of the present invention, the peripheral wall of the reflection cavity has a peripheral wall top edge. The space planes formed by the peripheral wall top edges of the reflection cavities are not parallel to the substrate.

[0007] In an embodiment of the present invention, the spacers are divided into a plurality of high spacers and a plurality of middle spacers. The top edge of the first inclined surface of the high spacer and the top edge of the first inclined surface of the middle spacer have a first height difference.

[0008] In one embodiment of the present application, the aforementioned reflective cavity is divided into a plurality of first reflective cavities and a plurality of second reflective cavities, a portion of the first reflective cavities and a portion of the second reflective cavities are adjacent to each other, wherein the sidewall of the first reflective cavity and the sidewall of the adjacent second reflective cavity are respectively formed by the first inclined surface and the second inclined surface of the high spacer, and the top edge of the first inclined surface of the high spacer is higher than the top edge of the second inclined surface of the high spacer.

[0009] In one embodiment of the present application, the aforementioned reflective cavity is divided into a plurality of first reflective cavities and a plurality of second reflective cavities, a portion of the first reflective cavities and a portion of the second reflective cavities are adjacent to each other, wherein at least one sidewall of the first reflective cavity and at least one sidewall of the adjacent second reflective cavity are respectively formed by the first inclined surface and the second inclined surface of the intermediate spacer, and the top edge of the first inclined surface of the intermediate spacer is equal to the top edge of the second inclined surface of the intermediate spacer.

[0010] In one embodiment of the present application, the distribution area of the aforementioned reflective cavity is divided into a central region and at least one peripheral region, the first reflective cavities are adjacently distributed in the central region, and the second reflective cavities are distributed in the peripheral region.

[0011] In one embodiment of the present application, the aforementioned peripheral region is a plurality of regions, and each of the peripheral regions is located at at least four corners of the central region.

[0012] In one embodiment of the present application, the aforementioned spacer is divided into a plurality of high spacers, a plurality of intermediate spacers, and a plurality of low spacers, wherein the top edge of the first inclined surface of the high spacer and the top edge of the first inclined surface of the intermediate spacer have a first height difference, and the top edge of the first inclined surface of the intermediate spacer and the top edge of the first inclined surface of the low spacer have a second height difference.

[0013] In one embodiment of the present application, the aforementioned reflective cavity is divided into a plurality of first reflective cavities, a plurality of second reflective cavities, and a plurality of third reflective cavities, a portion of the second reflective cavities and a portion of the third reflective cavities are adjacent to each other, wherein the sidewall of the second reflective cavity and the sidewall of the adjacent third reflective cavity are respectively formed by the first inclined surface and the second inclined surface of a portion of the intermediate spacer, the top edge of the first inclined surface of the intermediate spacer and the top edge of the second inclined surface of the intermediate spacer have a second height difference, and the top edge of the first inclined surface of the intermediate spacer is higher than the top edge of the second inclined surface of the intermediate spacer.

[0014] In one embodiment of the present application, the aforementioned reflective cavity is divided into a plurality of first reflective cavities, a plurality of second reflective cavities, and a plurality of third reflective cavities, a portion of the second reflective cavities and a portion of the third reflective cavities are adjacent to each other, wherein at least one sidewall of the second reflective cavity and at least one sidewall of the adjacent third reflective cavity are respectively formed by the first inclined surface and the second inclined surface of a portion of the low spacer, and the top edge of the first inclined surface of the low spacer is equal to the top edge of the second inclined surface of the low spacer.

[0015] In an embodiment of the present application, the distribution area of the aforementioned reflective cavity is divided into a central area, at least one transition area, and at least one peripheral area, the first reflective cavity is distributed adjacent to the central area, the second reflective cavity is distributed adjacent to the transition area, and the third reflective cavity is distributed in the peripheral area.

[0016] In an embodiment of the present application, the aforementioned peripheral area is multiple in number and is located at at least four corners of the central area.

[0017] In an embodiment of the present application, the aforementioned first height difference is the same as the second height difference.

[0018] In an embodiment of the present application, the aforementioned first height difference is different from the second height difference, including but not limited to, for example, the first height difference is greater than the second height difference, and the first height difference is an integer multiple of the second height difference, or the first height difference is less than the second height difference, and the second height difference is an integer multiple of the first height difference.

[0019] In an embodiment of the present application, the aforementioned reflective assembly further comprises a frame disposed on the substrate and surrounding the reflective cavity.

[0020] The present application provides a backlight module, comprising a lamp plate, a reflective assembly, and an optical plate. The lamp plate comprises a substrate and a plurality of light emitting assemblies disposed on the substrate. The reflective assembly comprises a plurality of reflective cavities and a plurality of spacers. Each reflective cavity has an upper opening, a lower opening, and a peripheral wall, the peripheral wall bottom edge of which is connected to the substrate, and the lower opening of each reflective cavity corresponds to one light emitting assembly, wherein the peripheral wall of the reflective cavity comprises a plurality of side walls. The spacer has a bottom surface, a first inclined surface, and a second inclined surface, the bottom surface connecting the first inclined surface and the second inclined surface, the spacer being disposed on the substrate, and the bottom surface of the spacer being flush with the peripheral wall bottom edge, the first inclined surface and the second inclined surface respectively serving as the side walls of two adjacent reflective cavities, wherein the top edge of the first inclined surface and the top edge of the second inclined surface of a part of the spacers have a height difference. The optical plate is disposed on the reflective assembly, wherein the distance between the top edge of the first inclined surface or the top edge of the second inclined surface of the spacer closest to the optical plate and the optical plate is between 1 mm and 4 mm.

[0021] In an embodiment of the present application, the aforementioned optical plate is selected from one of a diffusion plate and a structure plate or a combination thereof.

[0022] In an embodiment of the present application, the aforementioned structure plate comprises a plate body and a plurality of microstructures, the plate body having two opposite surfaces, and the microstructures being disposed on at least one of the two surfaces.

[0023] In an embodiment of the present application, the aforementioned microstructure has a shape of a wheel with four spokes, a quadrangular pyramid, or a triangular pyramid.

[0024] In an embodiment of the present application, the backlight module further comprises an optical film set disposed on the side of the optical plate distal from the reflective member.

[0025] In an embodiment of the present application, the optical film set comprises one or a combination of a light splitting film and a brightness enhancement film.

[0026] In an embodiment of the present application, the optical film set further comprises a light conversion film and a blue light filtering film.

[0027] The present application utilizes a plurality of spacers to separate a plurality of reflection cavities, and utilizes the first inclined surface and the second inclined surface of the spacers as the sidewalls of two adjacent reflection cavities, respectively. Since the top edges of the first inclined surface and the second inclined surface of a portion of the spacers have a height difference, the light rays of each light emitting component (e.g., a light emitting diode) in the reflection cavity are reflected differently, so that the brightness of the central region, the transition region and the peripheral region of the reflection component are similar, thereby improving the light uniformity of the display panel picture.

[0028] In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following embodiments are specifically described below, and the accompanying drawings are referred to for a detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a perspective view of a first embodiment of the reflection component of the present application disposed on a lamp panel.

[0030] Figure 2 is a cross-sectional view of a first embodiment of the reflection component of the present application disposed on a lamp panel.

[0031] Figure 3 is a perspective view of a second embodiment of the reflection component of the present application.

[0032] Figure 4 is a perspective view of a third embodiment of the reflection component of the present application.

[0033] Figure 5 is a cross-sectional view of a third embodiment of the reflection component of the present application along the A-A' line segment.

[0034] Figure 6 is a cross-sectional view of a third embodiment of the reflection component of the present application along the B-B' line segment.

[0035] Figure 7 is a cross-sectional view of a third embodiment of the reflection component of the present application along the C-C' line segment.

[0036] Figure 8 is a perspective view of a fourth embodiment of the reflection component of the present application.

[0037] Figure 9FIG. 4 is a side view of a reflective component according to a fourth embodiment of the present application.

[0038] Figure 10 FIG. 5 is a side view of another aspect of the reflective component according to the fourth embodiment of the present application.

[0039] Figure 11 FIG. 6 is a cross-sectional view of a reflective component according to a fifth embodiment of the present application disposed on a light plate.

[0040] Figure 12 FIG. 7 is a configuration view of a backlight module and a display panel according to an embodiment of the present application.

[0041] In the drawings:

[0042] 100, 100A, 100B, 100C, 100C', 100D: reflective component

[0043] 110: reflective cavity

[0044] 110a: first reflective cavity

[0045] 110b: second reflective cavity

[0046] 110c: third reflective cavity

[0047] 112: upper opening

[0048] 114: lower opening

[0049] 120: peripheral wall

[0050] 122: peripheral wall bottom edge

[0051] 124: peripheral wall top edge

[0052] 126, 126, 126: side wall

[0053] 130: spacer

[0054] 130a, 130a': high spacer

[0055] 130b, 130b': intermediate spacer

[0056] 130c: low spacer

[0057] 132: bottom surface

[0058] 134, 134a, 134b, 134c: first inclined surface

[0059] 136, 136a, 136b, 136c: second inclined surface

[0060] 138, 138a, 138a', 138b, 138b', 138c, 138c': Apical edge

[0061] 140: Frame

[0062] H1: First height difference

[0063] H2: Second elevation difference

[0064] A1: Central District

[0065] A2: Transition Zone

[0066] A3: Outer Area

[0067] 10: Light board

[0068] 11:Substrate

[0069] 12: Light-emitting components

[0070] 20: Optical plate

[0071] 30: Optical film assembly

[0072] 40: Display panel

[0073] 200: Backlight Module

[0074] D: Spacing Detailed Implementation

[0075] Figure 1 This is a three-dimensional schematic diagram of a first embodiment of the present invention, showing a reflective component disposed on a lamp plate. Figure 2 This is a cross-sectional schematic diagram of a first embodiment of the present invention, showing a reflective component disposed on a lamp plate. Figure 1 and Figure 2As shown, the reflective assembly 100 is disposed on the lamp panel 10, which comprises a substrate 11 and a plurality of light emitting assemblies 12; the reflective assembly 100 comprises a plurality of reflective cavities 110 and a plurality of partition members 130. Each of the reflective cavities 110 has an upper opening 112, a lower opening 114, and a peripheral wall 120, wherein the peripheral wall 120 has a peripheral wall bottom edge 122 connected to the substrate 11, and the lower opening 114 of each of the reflective cavities 110 corresponds to one of the light emitting assemblies 12; the peripheral wall 120 of the reflective cavity 110 comprises a plurality of side walls 126. Each of the partition members 130 has a bottom surface 132, a first inclined surface 134, and a second inclined surface 136, wherein the bottom surface 132 connects the first inclined surface 134 and the second inclined surface 136; the partition member 130 is disposed on the substrate 11, and the bottom surface 132 of each of the partition members 130 is flush with the peripheral wall bottom edge 122 of the peripheral wall 120 of the reflective cavity 110; the first inclined surface 134 and the second inclined surface 136 respectively serve as the side walls 126 of two adjacent reflective cavities 110, wherein the top edge 138 of the first inclined surface 134 and the top edge 138' of the second inclined surface 136 of some of the partition members 130 have a height difference.

[0076] Please continue to refer to Figure 2 As shown, in an embodiment, the partition members 130 can be divided into a plurality of high partition members 130a, 130a' and a plurality of intermediate partition members 130b, wherein the top edge 138a of the first inclined surface 134a of the high partition member 130a, 130a' and the top edge 138b of the first inclined surface 134b of the intermediate partition member 130b have a first height difference H1.

[0077] As described above, as shown, Figure 2 By the arrangement of the plurality of high partition members 130a, 130a' and the plurality of intermediate partition members 130b, the reflective cavities 110 can be divided into a plurality of first reflective cavities 110a and a plurality of second reflective cavities 110b. Among them, the top edge 138a of the first inclined surface 134a and the top edge 138a' of the second inclined surface 136a of some of the high partition members 130a can be of the same height, serving as the side walls 126 of some of the first reflective cavities 110a adjacent to each other; and the top edge 138b of the first inclined surface 134b and the top edge 138b' of the second inclined surface 136b of some of the intermediate partition members 130b can also be of the same height, serving as the side walls 126 of some of the second reflective cavities 110b adjacent to each other.

[0078] In addition, please continue to refer to Figure 2As shown, a portion of the first reflective cavity 110a is adjacent to a portion of the second reflective cavity 110b. The sidewall 126 of the first reflective cavity 110a and the sidewall 126 of the adjacent second reflective cavity 110b can be respectively formed by, for example, the first inclined surface 134a' and the second inclined surface 136a' of the high spacer 130a', and the top edge 138a of the first inclined surface 134a' of the high spacer 130a' is higher than the top edge 138a' of the second inclined surface 136a' of the high spacer 130a'. In embodiments not shown, the sidewall 126 of a portion of the first reflective cavity 110a and the sidewall 126 of the adjacent second reflective cavity 110b may be respectively formed by a portion of the first inclined surface 134b and the second inclined surface 136b of the intermediate spacer 130b, and the top edge 138b of the first inclined surface 134b of the intermediate spacer 130b may, for example, be equal to the top edge 138b' of the second inclined surface 136b of the intermediate spacer 130b.

[0079] Figure 3 This is a three-dimensional schematic diagram of a reflective component according to a second embodiment of the present invention, as shown below. Figure 3 As shown, in the second embodiment of the reflective assembly 100A, the distribution area of ​​the plurality of reflective cavities 110 can be, for example, divided into a central area A1 and at least one peripheral area A3. Figure 3 In this embodiment, four peripheral regions A3 are used as an example, and the four peripheral regions A3 are located at the four outermost corners of the central region A1, but the present invention is not limited thereto. In one embodiment, a plurality of first reflective cavities 110a, formed by a plurality of high spacers 130a, are distributed adjacently in the central region A1, while the second reflective cavities 110b can be dispersed in the four peripheral regions A3.

[0080] Figure 4 This is a three-dimensional schematic diagram of a reflective component according to a third embodiment of the present invention. Figure 5 This is a cross-sectional schematic diagram of the reflective component along line segment A-A' according to a third embodiment of the present invention. Figure 6 This is a cross-sectional schematic diagram of the reflective component along line segment B-B' according to a third embodiment of the present invention. Figure 7 This is a cross-sectional schematic diagram of the reflective component along line segment C-C' according to a third embodiment of the present invention. Figures 4 to 7 As shown, in the third embodiment of the reflective assembly 100B, the spacer 130 can be divided, for example, into a plurality of high spacers 130a, 130a', a plurality of middle spacers 130b, 130b' and a plurality of low spacers 130c. The top edge 138a of the first inclined surfaces 134a, 134a' of the high spacers 130a, 130a' and the top edge 138b of the first inclined surfaces 134b, 134b' of the middle spacers 130b, 130b' have a first height difference H1. The top edge 138b of the first inclined surfaces 134b, 134b' of the middle spacers 130b, 130b' and the top edge 138c of the first inclined surface 134c of the low spacer 130c have a second height difference H2.

[0081] Continuing with the above description, in the third embodiment of the reflective assembly 100B, by means of a plurality of high spacers 130a, 130a', a plurality of middle spacers 130b, 130b', and a plurality of low spacers 130c, the plurality of reflective cavities 110 can, for example, be divided into a plurality of first reflective cavities 110a, a plurality of second reflective cavities 110b, and a plurality of third reflective cavities 110c. Wherein, as... Figure 4 and Figure 5 As shown, the top edge 138a of the first inclined surface 134a and the top edge 138a' of the second inclined surface 136a of the partial high spacer 130a can be of equal height to serve as the sidewall 126 of the partially adjacent first reflective cavity 110a; as Figure 4 and Figure 6 As shown, the top edge 138b of the first inclined surface 134b and the top edge 138b' of the second inclined surface 136b of the intermediate spacer 130b can be at the same height to serve as the sidewall 126 of the partially adjacent second reflective cavities 110b; as Figure 4 and Figure 7 As shown, the top edge 138c of the first inclined surface 134c of the partial low spacer 130c and the top edge 138c' of the second inclined surface 136c can be at the same height to serve as the sidewall 126 of the partially adjacent third reflective cavity 110c.

[0082] Also, such as Figure 4 and Figure 5 As shown, a portion of the second reflective cavity 110b is adjacent to a portion of the third reflective cavity 110c. The sidewall 126 of the second reflective cavity 110b and the sidewall 126 of the adjacent third reflective cavity 110c can be respectively formed by a portion of the first inclined surface 134b' and the second inclined surface 136b' of the intermediate spacer 130b'. A second height difference H2 exists between the top edge 138b of the first inclined surface 134b' and the top edge 138b' of the second inclined surface 136b' of the intermediate spacer 130b'. In one embodiment, the top edge 138b of the first inclined surface 134b' of the intermediate spacer 130b' is higher than the top edge 138b' of the second inclined surface 136b' of the intermediate spacer 130b'. In embodiments not shown, the sidewall 126 of a portion of the second reflective cavity 110b and the sidewall 126 of the adjacent third reflective cavity 110c may be respectively formed by a portion of the first inclined surface 134c and the second inclined surface 136c of the low spacer 130c, and the top edge 138c of the first inclined surface 134c of the low spacer 130c may be, for example, equal to the top edge 138c' of the second inclined surface 136c of the low spacer 130c.

[0083] Figure 8 This is a three-dimensional schematic diagram of a reflective component according to a fourth embodiment of the present invention. Figure 9is a side view schematic diagram of a fourth embodiment of the reflective assembly of the present application. As shown in Figure 8 , in the fourth embodiment of the reflective assembly 100C, the plurality of reflective cavities 110 formed by the plurality of spacers 130 respectively have a peripheral wall 120 with a peripheral wall top edge 124, and the plurality of peripheral wall top edges 124 of the plurality of reflective cavities 110 form a spatial plane which is not parallel to the substrate 11 (shown in Figure 1 ), and the spatial plane formed by the peripheral wall top edges 124 can be, for example, curved or prismatic. Further explanation, as shown in Figure 9 , the highest region of the spatial plane formed by the plurality of peripheral wall top edges 124 can be, for example, located in the central region Al of the reflective assembly 100C. The height of the peripheral wall top edges 124 decreases from the central region Al to the peripheral region A3 of the reflective assembly 100C, and the peripheral region A3, for example, surrounds the central region Al, and the peripheral wall top edges 124 of the partial reflective cavities 110 in the central region Al can be, for example, isohypse.

[0084] Figure 10 is a side view schematic diagram of another aspect of the fourth embodiment of the reflective assembly of the present application. As shown in Figure 10 , the height of the peripheral wall top edges 124 of the reflective cavities 110 decreases from the central region Al to the peripheral region A3 of the reflective assembly 100C, and in addition to the peripheral wall top edges 124 of the central reflective cavities 110 being isohypse, the peripheral wall top edges 124 of the remaining reflective cavities 110 are not isohypse, or in an embodiment not shown, the peripheral wall top edges 124 of any reflective cavities 110 are not isohypse.

[0085] Figure 11 is a cross-sectional view schematic diagram of a fifth embodiment of the reflective assembly of the present application disposed on a lamp panel. As shown in Figure 11 , in the fifth embodiment of the reflective assembly 100D, the plurality of spacers 130 are disposed on the substrate 11 to form the plurality of reflective cavities 110, and the outermost side of the reflective assembly 100D is provided with a frame 140 to frame the reflective cavities 110 inside and disposed on the substrate 11. According to the arrangement distance of the light emitting assembly 12 and the change of the inclination angle of the first inclined surface 134 and the second inclined surface 136 of the spacer 130, the spacer 130 has multiple variations.

[0086] In an embodiment, the bottom surface 132 of the spacer 130 connects the first inclined surface 134 and the second inclined surface 136, when the top edge 138 of the first inclined surface 134 and the top edge 138' of the second inclined surface 136 are at the same height, the top edge 138 of the first inclined surface 134 and the top edge 138' of the second inclined surface 136 are directly connected or can be connected via a horizontal connecting surface 150 between the top edge 138 of the first inclined surface 134 and the top edge 138' of the second inclined surface 136; when the top edge 138 of the first inclined surface 134 and the top edge 138' of the second inclined surface 136 of the spacer 130 have a height difference, the top edge 138 of the first inclined surface 134 and the top edge 138' of the second inclined surface 136 can be connected via a longitudinal surface structure 160, or connected in a stepped structure 170, or connected in other combinations.

[0087] According to the above, in the reflective assembly 100, 100A, 100B, 100C, 100C', 100D of the embodiments of the present application, the top edge 138a of the first inclined surface 134a, 134a' of the high spacer 130a, 130a', the top edge 138b of the first inclined surface 134b, 134b' of the middle spacer 130b, 130b', and the top edge 138c of the first inclined surface 134c of the low spacer 130c have a height difference, so that the height of the top edge 138a, the height of the top edge 138b, and the height of the top edge 138c can for example present an arithmetic progression, a geometric progression, or a random height change, thereby making the first height difference H1 between the top edge 138a and the top edge 138b, and the second height difference H2 between the top edge 138b and the top edge 138c. The following examples are used for illustration, and the present application is not limited thereto. When the height of the top edge 138a, the height of the top edge 138b, and the height of the top edge 138c present an arithmetic progression, the first height H1 and the second height H2 are the same; when the height of the top edge 138a, the height of the top edge 138b, and the height of the top edge 138c present a geometric progression or randomly, the first height H1 and the second height H2 are different, wherein the first height H1 can for example be greater than the second height H2, and the first height difference H1 can be an integer multiple of the second height difference H2, or the first height difference H1 can for example be less than the second height difference H2, and the second height difference H2 can be an integer multiple of the first height difference H1.

[0088] Figure 12 is a configuration diagram of a backlight module and a display panel according to an embodiment of the present application. As shown in Figure 12As shown, the backlight module 200 comprises the lamp plate 10, the reflection assembly 100 and the optical plate 20. The reflection assembly 100 is disposed on the lamp plate 10, and the optical plate 20 is disposed on the reflection assembly 100 and has a distance D with the reflection assembly 100. In an embodiment, the distance D between the optical plate 20 and the top edge 138 of the first inclined surface 134 or the top edge 138' of the second inclined surface 136 of the nearest spacer 130 is between 1 mm and 4 mm. In an embodiment, the backlight module 200 further comprises the optical film set 30, which is disposed between the display panel 40 and the optical plate 20 when the backlight module 200 is arranged on one side of the display panel 40.

[0089] As described above, the optical plate 20 can be selected from one of a diffusion plate and a structure plate or a combination thereof. In an embodiment not shown, the structure plate can comprise a plate body and a plurality of microstructures, wherein the plate body has two opposite surfaces, the microstructures are disposed on at least one of the two opposite surfaces of the plate body, and the microstructures can have various configurations such as a herringbone profile, a quadrangular pyramid or a triangular pyramid. In addition, the optical film set comprises one of a light splitting film and a brightness enhancement film or a combination thereof, or a light conversion film and a blue light filtering film.

[0090] The present application utilizes a plurality of spacers to divide a plurality of reflection cavities, and the first inclined surface and the second inclined surface of the spacers are respectively used as the side walls of two adjacent reflection cavities. Since the top edge of the first inclined surface and the top edge of the second inclined surface of a part of the spacers have a height difference, the light rays of the light emitting components (e.g. light emitting diodes) disposed in the reflection cavities are reflected differently, so that the brightness of the central region, the transition region and the peripheral region of the reflection assembly is similar, thereby improving the light uniformity of the display panel picture.

[0091] Although the present application has been disclosed with the above embodiments, it is not intended to limit the present application. Those skilled in the art can make some changes and modifications without departing from the spirit and scope of the present application. Therefore, the protection scope of the present application is defined by the following appended claims.

Claims

1. A reflective component suitable for application on a lamp panel, the lamp panel comprising a substrate and a plurality of light-emitting components disposed on the substrate, characterized in that, The reflection assembly comprises: a plurality of reflection cavities, each of which has an upper opening, a lower opening, and a peripheral wall, a peripheral wall bottom edge of the peripheral wall being connected to the base plate, and the lower opening of each of the reflection cavities corresponding to each of the light emitting assemblies, wherein the peripheral wall of each of the reflection cavities comprises a plurality of side walls; and a plurality of spacers, each of which has a bottom surface, a first inclined surface, and a second inclined surface, the bottom surface connecting the first inclined surface and the second inclined surface, the spacers being arranged on the base plate, and the bottom surface of each of the spacers being flush with the peripheral wall bottom edge, the first inclined surface and the second inclined surface of each of the spacers serving as the side walls of two adjacent reflection cavities, wherein the top edge of the first inclined surface and the top edge of the second inclined surface of a part of the spacers have a height difference. The spacers are divided into a plurality of high spacers and a plurality of intermediate spacers, wherein the top edge of the first inclined surface of the high spacer and the top edge of the first inclined surface of the intermediate spacer have a first height difference. The reflection cavities are divided into a plurality of first reflection cavities and a plurality of second reflection cavities, a part of the first reflection cavities being adjacent to a part of the second reflection cavities, wherein the side walls of the first reflection cavities and the side walls of the adjacent second reflection cavities are respectively formed by the first inclined surface and the second inclined surface of the high spacer, and the top edge of the first inclined surface of the high spacer is higher than the top edge of the second inclined surface of the high spacer.

2. The reflective assembly of claim 1, wherein, The peripheral wall of each of the reflection cavities has a peripheral wall top edge, and the space plane formed by the peripheral wall top edge of the reflection cavity is not parallel to the base plate.

3. The reflective assembly of claim 1, wherein, The reflection cavities are divided into a plurality of first reflection cavities and a plurality of second reflection cavities, a part of the first reflection cavities being adjacent to a part of the second reflection cavities, wherein at least one of the side walls of the first reflection cavities and at least one of the side walls of the adjacent second reflection cavities are respectively formed by the first inclined surface and the second inclined surface of the intermediate spacer, and the top edge of the first inclined surface of the intermediate spacer is equal to the top edge of the second inclined surface of the intermediate spacer.

4. The reflective assembly of any one of claims 1 or 3, wherein, The distribution area of the reflection cavities is divided into a central area and at least one peripheral area, the first reflection cavities being adjacently distributed in the central area, and the second reflection cavities being distributed in the peripheral area.

5. The reflective assembly of claim 4, wherein, The number of the at least one peripheral area is a plurality, and each of the at least one peripheral area is located at at least four corners of the central area.

6. The reflective assembly of claim 1, wherein, The spacers are divided into a plurality of high spacers, a plurality of intermediate spacers, and a plurality of low spacers, wherein the top edge of the first inclined surface of the high spacer and the top edge of the first inclined surface of the intermediate spacer have a first height difference, and the top edge of the first inclined surface of the intermediate spacer and the top edge of the first inclined surface of the low spacer have a second height difference.

7. The reflective assembly of claim 6, wherein, The reflective cavity is divided into a plurality of first reflective cavities, a plurality of second reflective cavities, and a plurality of third reflective cavities. A portion of the second reflective cavities is adjacent to a portion of the third reflective cavities. The sidewall of the second reflective cavity and the sidewall of the adjacent third reflective cavity are respectively formed by a first inclined surface and a second inclined surface of a portion of the intermediate spacer. The top edge of the first inclined surface of the intermediate spacer and the top edge of the second inclined surface of the intermediate spacer have a second height difference. The top edge of the first inclined surface of the intermediate spacer is higher than the top edge of the second inclined surface of the intermediate spacer.

8. The reflective assembly of claim 6, wherein, The reflective cavity is divided into a plurality of first reflective cavities, a plurality of second reflective cavities, and a plurality of third reflective cavities. A portion of the second reflective cavities is adjacent to a portion of the third reflective cavities. At least one sidewall of the second reflective cavity and at least one sidewall of the adjacent third reflective cavity are respectively formed by a first inclined surface and a second inclined surface of a portion of the low spacer. The top edge of the first inclined surface of the low spacer is equal to the top edge of the second inclined surface of the low spacer.

9. A reflective assembly as claimed in any one of claims 7 or 8, wherein, The distribution area of the reflective cavity is divided into a central area, at least one transition area, and at least one peripheral area. The first reflective cavities are adjacently distributed in the central area. The second reflective cavities are adjacently distributed in the at least one transition area. The third reflective cavities are distributed in the at least one peripheral area.

10. The reflective assembly of claim 9, wherein, The number of the at least one peripheral area is a plurality, and is respectively located in at least four corners of the central area.

11. The reflective assembly of claim 6, wherein, The first height difference is the same as the second height difference.

12. The reflective assembly of claim 6, wherein, The first height difference is different from the second height difference.

13. The reflective assembly of claim 6, wherein, The first height difference is greater than the second height difference, and the first height difference is an integer multiple of the second height difference.

14. The reflective assembly of claim 12, wherein, The first height difference is less than the second height difference, and the second height difference is an integer multiple of the first height difference.

15. The reflective assembly of claim 12, wherein, A frame is further included and is arranged on the substrate and frames the reflective cavity.

16. A backlight module, characterized by, It includes: A light plate includes a substrate and a plurality of light emitting components arranged on the substrate; A reflective component includes: A plurality of reflective cavities, each having an upper opening, a lower opening, and a peripheral wall. The peripheral wall has a peripheral wall bottom edge connected to the substrate. The lower opening of each reflective cavity corresponds to each light emitting component. The peripheral wall of each reflective cavity includes a plurality of sidewalls; and A plurality of spacers, each having a bottom surface, a first inclined surface, and a second inclined surface. The bottom surface connects the first inclined surface and the second inclined surface. Each spacer is arranged on the substrate, and the bottom surface of each spacer is flush with the peripheral wall bottom edge. The first inclined surface and the second inclined surface respectively serve as the sidewalls of two adjacent reflective cavities. A portion of the top edge of the first inclined surface and the top edge of the second inclined surface of the spacer has a height difference; The spacers are divided into a plurality of high spacers and a plurality of intermediate spacers. The top edge of the first inclined surface of the high spacer and the top edge of the first inclined surface of the intermediate spacer have a first height difference. The reflective cavity is divided into a plurality of first reflective cavities and a plurality of second reflective cavities, a portion of the first reflective cavities and a portion of the second reflective cavities are adjacent to each other, wherein the sidewall of the first reflective cavity and the sidewall of the adjacent second reflective cavity are respectively formed by the first inclined surface and the second inclined surface of the high spacer, and the top edge of the first inclined surface of the high spacer is higher than the top edge of the second inclined surface of the high spacer, and An optical plate is disposed on the reflective assembly, wherein the distance between the top edge of the first inclined surface or the top edge of the second inclined surface of the spacer closest to the optical plate and the optical plate is between 1 mm and 4 mm.

17. The backlight module of claim 16, wherein, The optical plate is selected from one of a diffusion plate and a structure plate or a combination thereof.

18. The backlight module of claim 17, wherein, The structure plate includes a plate body and a plurality of microstructures, the plate body has two opposite surfaces, and the microstructures are disposed on at least one of the two surfaces.

19. The backlight module of claim 18, wherein, The microstructure has a shape of a gear, a pyramid, or a triangular pyramid.

20. The backlight module of claim 16, wherein, The backlight module further includes an optical film set disposed on a side of the optical plate away from the reflective assembly.

21. The backlight module of claim 20, wherein, The optical film set includes one of a light splitting film and a brightness enhancement film or a combination thereof.

22. The backlight module of claim 21, wherein, The optical film set further includes a light conversion film and a blue light filtering film.

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