Reflective sheet, light-emitting substrate, backlight module and display device

Abstract

Disclosed in the present disclosure are a reflective sheet, a light-emitting substrate, a backlight module and a display device, which can solve the problems of the reflective sheet easily bulging and detaching, and creasing under stress. The reflective sheet comprises: a light-reflecting layer, which comprises a plurality of first light-reflecting portions; and an adhesive layer, which comprises a plurality of first adhesive portions, wherein at least some of the first light-reflecting portions each comprise a first light-reflecting area and two second light-reflecting areas located on two sides of the first light-reflecting area; and the orthographic projection of a release layer on the first light-reflecting areas is disconnected from the orthographic projection of the release layer on the second light-reflecting areas, and / or each first adhesive portion comprises a first opening, and the orthographic projection of the first openings on the plane where the light-reflecting layer is located overlaps the first light-reflecting areas.

Description

Reflective sheet, light-emitting substrate, backlight module and display device TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of display, and in particular to a reflective sheet, a light-emitting substrate, a backlight module and a display device. BACKGROUND

[0002] With the development of light-emitting diode technology, backlight sources using light-emitting diodes (LED) of sub-millimeter or even micrometer level have been widely applied. As a result, not only can the picture contrast of products such as transmissive liquid crystal displays (LCD) using the backlight sources reach the level of organic light-emitting diode (OLED) display products, but also the products can retain the technical advantages of liquid crystal display, thereby improving the display effect of the picture and providing users with better visual experience. In the related art, a backlight module includes a substrate, a reflective sheet and a plurality of micro light-emitting diodes. The reflective sheet and the micro light-emitting diodes are arranged on the same side of the substrate, and the reflective sheet exposes the plurality of micro light-emitting diodes.

[0003] However, in the prior art, the reflective sheet has the problems of easy bulging and falling off and stress creasing, which reduces the appearance, brightness and light extraction efficiency of the backlight module.

[0004] SUMMARY

[0005] The present disclosure provides a reflective sheet, a light-emitting substrate, a backlight module and a display device, which can solve the problems of easy bulging and falling off and stress creasing of the reflective sheet, and reduce the appearance, brightness and light extraction efficiency of the backlight module.

[0006] In a first aspect, the present disclosure provides a reflective sheet, comprising:

[0007] a light-reflecting layer comprising a plurality of first light-reflecting portions, and a first gap between adjacent two first light-reflecting portions;

[0008] a glue layer arranged on one side of the light-reflecting layer and comprising a plurality of first glue portions, and a second gap between adjacent two first glue portions, the first glue portions and the first light-reflecting portions are stacked in the thickness direction of the reflective sheet, and the first gap and the second gap are stacked;

[0009] a release layer arranged on the side of the glue layer away from the light-reflecting layer, and a normal projection of the release layer on the plane where the light-reflecting layer is arranged overlaps with the plurality of first light-reflecting portions and the first gap;

[0010] At least part of the first reflective portion comprises a first reflective region, and two second reflective regions located on both sides of the first reflective region, and the second reflective regions are adjacent to the first gap;

[0011] The orthogonal projection of the release layer on the first reflective region is disconnected from the orthogonal projection of the release layer on the second reflective region, or / and the first adhesive portion comprises a first opening, and the orthogonal projection of the first opening on the plane where the reflective layer is located overlaps with the first reflective region.

[0012] In some embodiments, the release layer comprises a plurality of first release portions and a plurality of second release portions, the orthogonal projection of the first release portion on the plane where the reflective layer is located overlaps with the first reflective region, the orthogonal projection of the second release portion on the plane where the reflective layer is located overlaps with the second reflective region, and the first release portion and the second release portion are disconnected.

[0013] In some embodiments, the release layer further comprises a plurality of third release portions, the orthogonal projection of the third release portion on the plane where the reflective layer is located overlaps with the first gap, and the second release portion is connected to the adjacent third release portion.

[0014] In some embodiments, at least part of the second release portion is a unitary structure.

[0015] In some embodiments, at least part of the second release portion of the unitary structure is located at the outer edge of the reflective sheet.

[0016] In some embodiments, the distance from the edge of the orthogonal projection of the first reflective portion on the plane where the release layer is located to the corresponding first release portion is 100 microns to 1000 microns.

[0017] In some embodiments, in the direction perpendicular to the extension direction of the outer edge of the first adhesive portion, the first adhesive portion further comprises two first adhesive regions located on both sides of the first opening, and the first adhesive regions are adjacent to the first opening and the second gap respectively on both sides.

[0018] In some embodiments, in the direction perpendicular to the extension direction of the outer edge of the first adhesive portion, the width of the first adhesive region on both sides of the first opening is 100 microns to 1000 microns.

[0019] In some embodiments, the adhesive layer further comprises a second opening, and in the direction perpendicular to the plane where the reflective sheet is located, the second opening overlaps with the outer edge of the reflective layer.

[0020] In some embodiments, the release layer further comprises an inner release portion and an outer release portion surrounding the inner release portion, a normal projection of the outer release portion on a plane on which the light-reflecting layer is located overlaps with an outer edge of the light-reflecting layer, and the outer release portion is arranged separately from the inner release portion.

[0021] In some embodiments, the reflective sheet satisfies at least one of the following conditions:

[0022] The first light-reflecting portion is in a strip shape;

[0023] The reflective sheet is in a comb shape;

[0024] The reflective sheet is in a sawtooth shape.

[0025] In some embodiments, the light-reflecting layer further comprises at least one second light-reflecting portion, the second light-reflecting portion is connected to a plurality of the first light-reflecting portions.

[0026] In a second aspect of the embodiments of the present disclosure, a light-emitting substrate is provided, which is configured with the reflective sheet in any one of the above embodiments, and the reflective sheet removes at least part of the release layer.

[0027] In some embodiments, the light-emitting substrate further comprises:

[0028] The substrate comprises a plurality of substrate portions, and a spacing portion is arranged between two adjacent substrate portions;

[0029] A plurality of light-emitting diodes are arranged on one side of the substrate;

[0030] The reflective sheet and the plurality of light-emitting diodes are arranged on the same side of the substrate, the first adhesive portion is attached to two adjacent substrate portions, and the reflective sheet exposes the plurality of light-emitting diodes.

[0031] In a third aspect of the embodiments of the present disclosure, a backlight module is provided, which is configured with the reflective sheet in any one of the above embodiments, and the reflective sheet removes at least part of the release layer.

[0032] In a fourth aspect of the embodiments of the present disclosure, a display device is provided, which comprises the backlight module in any one of the above embodiments.

[0033] In the reflective sheet, the light-emitting substrate, the backlight module and the display device provided in the present disclosure, the orthographic projection of the release layer on the first light-reflecting area is disconnected from the orthographic projection of the release layer on the second light-reflecting area, or / and the first adhesive part comprises a first opening, and the orthographic projection of the first opening on the plane where the light-reflecting layer is located overlaps with the first light-reflecting area, so that at least one of the release layer and the first adhesive part is provided with an anti-sticking structure at the part corresponding to the first light-reflecting area, so that the part of the release layer overlapping with the first light-reflecting area is reserved, the reserved part of the release layer avoids the direct exposure of the adhesive layer, blocks the adhesion of foreign matters to the adhesive layer, or makes the part overlapping with the first light-reflecting area free of the material of the adhesive layer, so that the direct exposure of the adhesive layer is avoided, the adhesion of foreign matters to the adhesive layer is blocked, and the problems of bulging and falling off of the reflective sheet and stress creases are avoided, so that the appearance, brightness and light-emitting efficiency of the backlight module are improved. BRIEF DESCRIPTION OF DRAWINGS

[0034] FIG. 1 is a first cross-sectional structure schematic diagram of a reflective sheet provided in an embodiment of the present disclosure;

[0035] FIG. 2 is a second cross-sectional structure schematic diagram of a reflective sheet provided in an embodiment of the present disclosure;

[0036] FIG. 3 is a top view schematic diagram of a light-reflecting layer of a reflective sheet provided in an embodiment of the present disclosure;

[0037] FIG. 4 is a top view schematic diagram of an adhesive layer of a reflective sheet provided in an embodiment of the present disclosure;

[0038] FIG. 5 is a top view schematic diagram of a release layer of a reflective sheet provided in an embodiment of the present disclosure;

[0039] FIG. 6 is a top view schematic diagram of a laminated structure of a reflective sheet provided in an embodiment of the present disclosure;

[0040] FIG. 7 is a first cross-sectional structure schematic diagram of a light-emitting substrate provided in an embodiment of the present disclosure;

[0041] FIG. 8 is a second cross-sectional structure schematic diagram of a light-emitting substrate provided in an embodiment of the present disclosure;

[0042] FIG. 9 is a third cross-sectional structure schematic diagram of a reflective sheet provided in an embodiment of the present disclosure;

[0043] FIG. 10 is a fourth cross-sectional structure schematic diagram of a reflective sheet provided in an embodiment of the present disclosure;

[0044] FIG. 11 is a top view schematic diagram of another light-reflecting layer of a reflective sheet provided in an embodiment of the present disclosure;

[0045] FIG. 12 is a top view schematic diagram of another adhesive layer of a reflective sheet provided in an embodiment of the present disclosure;

[0046] FIG. 13 is a top view of another release layer of a reflective sheet according to an embodiment of the present disclosure;

[0047] FIG. 14 is a top view of another layer structure of a reflective sheet according to an embodiment of the present disclosure;

[0048] FIG. 15 is a third cross-sectional structure of a light-emitting substrate according to an embodiment of the present disclosure;

[0049] FIG. 16 is a fourth cross-sectional structure of a light-emitting substrate according to an embodiment of the present disclosure;

[0050] FIG. 17 is a fifth cross-sectional structure of a reflective sheet according to an embodiment of the present disclosure;

[0051] FIG. 18 is a fifth cross-sectional structure of a light-emitting substrate according to an embodiment of the present disclosure;

[0052] FIG. 19 is a structure of a display device or a backlight module according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0053] In order to better understand the technical solutions provided by the embodiments of the present disclosure, the technical solutions of the embodiments of the present disclosure will be described in detail below with reference to the drawings and specific embodiments. It should be understood that the specific features in the embodiments of the present disclosure and the specific embodiments are detailed descriptions of the technical solutions of the embodiments of the present disclosure, and are not limitations of the technical solutions of the present disclosure. In the case of no conflict, the technical features in the embodiments of the present disclosure and the specific embodiments can be combined with each other.

[0054] In this document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises... a" does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the recited element. The term "two or more" includes two or more than two.

[0055] In the prior art, the reflective sheet has the problems of easy bulging and falling off, and stress creasing, which reduces the appearance, brightness, and light extraction efficiency of the backlight module.

[0056] After the inventor analyzes, the substrate includes a plurality of substrate portions and a spacing portion between two adjacent substrate portions, for example, the substrate and the reflective sheet can be comb-shaped, the reflective sheet and the micro light emitting diode are arranged on the same side of the substrate, and the reflective sheet has the problems of easy bulging and falling off and stress creasing, because the adhesive layer of the reflective sheet is directly exposed on the back side of the substrate, the exposed adhesive layer can adhere to foreign matters, so that the reflective sheet has the problems of bulging and falling off and stress creasing, and the appearance, brightness and light emission efficiency of the backlight module are reduced.

[0057] Therefore, the present disclosure provides a reflective sheet, a light emitting substrate, a backlight module and a display device, which can solve the above problems.

[0058] The present disclosure provides a reflective sheet, comprising:

[0059] The light reflection layer comprises a plurality of first light reflection portions, and two adjacent first light reflection portions have a first gap therebetween;

[0060] The adhesive layer is arranged on one side of the light reflection layer and comprises a plurality of first adhesive portions, and two adjacent first adhesive portions have a second gap therebetween, the first adhesive portion is stacked with the first light reflection portion in the thickness direction of the reflective sheet, and the first gap is stacked with the second gap;

[0061] The release layer is arranged on the side of the adhesive layer away from the light reflection layer, and the projection of the release layer on the plane where the light reflection layer is located is arranged in overlapping with the plurality of first light reflection portions and the first gap;

[0062] At least part of the first light reflection portion comprises a first light reflection area and two second light reflection areas located on both sides of the first light reflection area, and the second light reflection area is adjacent to the first gap;

[0063] The projection of the release layer on the first light reflection area is arranged separately from the projection of the release layer on the second light reflection area, or / and the first adhesive portion comprises a first opening, and the projection of the first opening on the plane where the light reflection layer is located is arranged in overlapping with the first light reflection area.

[0064] The present disclosure further provides a light emitting substrate comprising or configured with the above-mentioned reflective sheet.

[0065] The present disclosure further provides a backlight module comprising or configured with the above-mentioned reflective sheet, or the backlight module comprises the above-mentioned light emitting substrate.

[0066] The present disclosure further provides a display device comprising or configured with the above-mentioned reflective sheet, or the display device comprises the above-mentioned light emitting substrate or backlight module.

[0067] The different embodiments are described in detail below, and the implementation features in different embodiments can be combined with each other.

[0068]

[0069] Please refer to FIG. 1 to FIG. 8, FIG. 1 is a first cross-sectional structure schematic diagram of a reflective sheet provided by an embodiment of the present disclosure; FIG. 2 is a second cross-sectional structure schematic diagram of a reflective sheet provided by an embodiment of the present disclosure; FIG. 3 is a top view schematic diagram of a light-reflecting layer of a reflective sheet provided by an embodiment of the present disclosure; FIG. 4 is a top view schematic diagram of a glue layer of a reflective sheet provided by an embodiment of the present disclosure; FIG. 5 is a top view schematic diagram of a release layer of a reflective sheet provided by an embodiment of the present disclosure; FIG. 6 is a top view schematic diagram of a laminated structure of a reflective sheet provided by an embodiment of the present disclosure; FIG. 7 is a first cross-sectional structure schematic diagram of a light-emitting substrate provided by an embodiment of the present disclosure; and FIG. 8 is a second cross-sectional structure schematic diagram of a light-emitting substrate provided by an embodiment of the present disclosure. The light-emitting substrate in FIG. 7 uses the reflective sheet shown in FIG. 1, and the light-emitting substrate in FIG. 8 uses the reflective sheet shown in FIG. 2.

[0070] Please refer to FIG. 9 to FIG. 15, FIG. 9 is a third cross-sectional structure schematic diagram of a reflective sheet provided by an embodiment of the present disclosure; FIG. 10 is a fourth cross-sectional structure schematic diagram of a reflective sheet provided by an embodiment of the present disclosure; FIG. 11 is a top view schematic diagram of a light-reflecting layer of a reflective sheet provided by an embodiment of the present disclosure; FIG. 12 is a top view schematic diagram of a glue layer of a reflective sheet provided by an embodiment of the present disclosure; FIG. 13 is a top view schematic diagram of a release layer of a reflective sheet provided by an embodiment of the present disclosure; FIG. 14 is a top view schematic diagram of a laminated structure of a reflective sheet provided by an embodiment of the present disclosure; FIG. 15 is a third cross-sectional structure schematic diagram of a light-emitting substrate provided by an embodiment of the present disclosure; and FIG. 16 is a fourth cross-sectional structure schematic diagram of a light-emitting substrate provided by an embodiment of the present disclosure. The light-emitting substrate in FIG. 15 uses the reflective sheet shown in FIG. 9, and the light-emitting substrate in FIG. 16 uses the reflective sheet shown in FIG. 10.

[0071] The present disclosure provides a reflective sheet 10, which includes a light-reflecting layer 13, an adhesive layer 12, and a release layer 11. The light-reflecting layer 13 includes a plurality of first light-reflecting portions 131, and each two adjacent first light-reflecting portions 131 have a first gap 132 therebetween. The adhesive layer 12 is disposed on one side of the light-reflecting layer 13, and includes a plurality of first adhesive portions 121, and each two adjacent first adhesive portions 121 have a second gap 12J therebetween. In the thickness direction of the reflective sheet 10, the first adhesive portions 121 are stacked with the first light-reflecting portions 131, and the first gaps 132 are stacked with the second gaps 12J. The release layer 11 is disposed on the side of the adhesive layer 12 away from the light-reflecting layer 13, and the orthographic projection of the release layer 11 on the plane of the light-reflecting layer 13 overlaps with both the plurality of first light-reflecting portions 131 and the first gaps 132. At least part of the first light-reflecting portions 131 include a first light-reflecting region 1311, and two second light-reflecting regions 1312 located on both sides of the first light-reflecting region 1311, and the second light-reflecting regions 1312 are adjacent to the first gaps 132. The orthographic projection of the release layer 11 on the first light-reflecting region 1311 is separately disposed from the orthographic projection of the release layer 11 on the second light-reflecting region 1312, or / and the first adhesive portions 121 include a first opening 1211, and the orthographic projection of the first opening 1211 on the plane of the light-reflecting layer 13 overlaps with the first light-reflecting region 1311.

[0072] For example, FIG. 1 shows that the thickness direction of the reflective sheet 10 is a first direction Y, or a direction perpendicular to the plane of the reflective sheet 10 is the first direction Y.

[0073] For example, the light-reflecting layer 13 can reflect light on the surface away from the adhesive layer 12. The material of the light-reflecting layer 13 can include metal, organic material, etc., but is not limited thereto.

[0074] For example, the adhesive layer 12 is used to attach to the substrate of the light-emitting substrate. The material of the adhesive layer 12 can include silicone adhesive, pressure-sensitive adhesive, but is not limited thereto.

[0075] For example, the release layer 11 is used to protect the adhesive layer 12 at least before the reflective sheet is attached to the substrate of the light-emitting substrate.

[0076] As shown in FIGS. 1, 2, 9 and 10, in the first direction Y, the release layer 11 overlaps with both the plurality of first light-reflecting portions 131 and the plurality of first gaps 132.

[0077] It should be noted that in the present disclosure, the orthogonal projection of one part on a plane overlapping with another part has the same meaning as one part being arranged to overlap with another part in the direction perpendicular to the plane. For example, in the first direction Y, the first adhesive part 121 overlaps with the first light-reflecting part 131, which means that the orthogonal projection of the first adhesive part 121 on the plane where the light-reflecting layer 13 is located overlaps with the first light-reflecting part 131. For example, in the first direction Y, the first gap 132 overlaps with the second gap 12J, which means that the orthogonal projection of the second gap 12J on the plane where the light-reflecting layer 13 is located overlaps with the first gap 132.

[0078] For example, in some embodiments, the release layer 11 is arranged on one side of the adhesive layer 12.

[0079] For example, as shown in FIG. 1 and FIG. 2, in some embodiments, the orthogonal projection of the release layer 11 on the first light-reflecting area 1311 is arranged separately from the orthogonal projection of the release layer 11 on the second light-reflecting area 1312.

[0080] For example, as shown in FIG. 9 and FIG. 10, in some other embodiments, the first adhesive part 121 includes a first opening 1211, and the orthogonal projection of the first opening 1211 on the plane where the light-reflecting layer 13 is located overlaps with the first light-reflecting area 1311.

[0081] For example, as shown in FIG. 7, FIG. 8, FIG. 15 and FIG. 16, the reflective sheet 10 of the present disclosure can be used in a light-emitting substrate 100, which includes a substrate 20 including a plurality of substrate parts 21, and a spacing part 22 arranged between two adjacent substrate parts 21. A plurality of light-emitting diodes 31 are arranged on one side of the substrate 20. The reflective sheet 10 and the plurality of light-emitting diodes 31 are arranged on the same side of the substrate 20, the first adhesive part 121 is attached to the two adjacent substrate parts 21, and the reflective sheet 10 exposes the plurality of light-emitting diodes 31.

[0082] For example, as shown in FIG. 7, FIG. 8, FIG. 15 and FIG. 16, the first light-reflecting part 131 is attached to one side of the two adjacent substrate parts 21 through the first adhesive part 121, the first light-reflecting area 1311 of the first light-reflecting part 131 is arranged corresponding to the spacing part 22 or overlaps in the first direction Y, and the second light-reflecting area 1312 of the first light-reflecting part 131 is attached to the two adjacent substrate parts 21 through the first adhesive part 121, and the second light-reflecting area 1312 of the first light-reflecting part 131 is arranged corresponding to the substrate part 21 or overlaps in the first direction Y. The first gap 132 between the two adjacent first light-reflecting parts 131 is arranged corresponding to the substrate part 21 or overlaps in the first direction Y, and the first gap 132 can expose the light-emitting diode 31.

[0083] For example, as shown in FIGS. 7 and 8, when the reflective sheet 10 of the present disclosure is used in the light-emitting substrate 100, part of the release layer 11 is torn off, and the first release part 111 is retained. As shown in FIGS. 15 and 16, when the reflective sheet 10 of the present disclosure is used in the light-emitting substrate 100, the entire release layer 11 is torn off, and the first opening 1211 of the first adhesive part 121 overlaps the first light-reflecting area 1311, i.e., the part overlapping the first light-reflecting area 1311 is free of the material of the adhesive layer 12.

[0084] For example, as shown in FIGS. 7, 8, 15, and 16, when the reflective sheet 10 of the present disclosure is used, at least one of the release layer 11 and the first adhesive part 121 is arranged in a pattern between the first light-reflecting area 1311 and the second light-reflecting area 1312. As shown in FIGS. 7 and 8, the surface of the first adhesive part 121 away from the first light-reflecting area 1311 is part of the release layer 11 (the first release part 111), i.e., the part of the release layer 11 overlapping the first light-reflecting area 1311 is retained, and the retained part of the release layer 11 avoids direct exposure of the adhesive layer 12, blocks the adhesive layer from adhering foreign matter, thereby avoiding the problems of bulging and falling off and stress creasing of the reflective sheet, and improving the appearance, brightness, and light-emitting efficiency of the backlight module. As shown in FIGS. 15 and 16, the first opening 1211 overlaps the first light-reflecting area 1311, so that the part overlapping the first light-reflecting area 1311 (the first opening 1211) is free of the material of the adhesive layer 12, which avoids direct exposure of the adhesive layer 12, blocks the adhesive layer from adhering foreign matter, thereby avoiding the problems of bulging and falling off and stress creasing of the reflective sheet, and improving the appearance, brightness, and light-emitting efficiency of the backlight module.

[0085] In the present disclosure, by arranging the orthographic projection of the release layer 11 on the first light-reflecting area 1311 to be disconnected from the orthographic projection of the release layer 11 on the second light-reflecting area 1312, or / and by arranging the first adhesive part 121 to include the first opening 1211, the orthographic projection of the first opening 1211 on the plane of the light-reflecting layer 13 overlaps the first light-reflecting area 1311, so that when the reflective sheet 10 is applied to products such as the light-emitting substrate 100, at least one of the release layer 11 and the first adhesive part 121 is provided with an anti-sticking structure at the part corresponding to the first light-reflecting area 1311, so that the part of the release layer 11 overlapping the first light-reflecting area 1311 is retained, the retained part of the release layer 11 avoids direct exposure of the adhesive layer 12, blocks the adhesive layer from adhering foreign matter, or so that the part overlapping the first light-reflecting area 1311 is free of the material of the adhesive layer 12, which avoids direct exposure of the adhesive layer 12, blocks the adhesive layer from adhering foreign matter, thereby avoiding the problems of bulging and falling off and stress creasing of the reflective sheet, and improving the appearance, brightness, and light-emitting efficiency of the backlight module.

[0086] In some embodiments, as shown in FIGS. 1-6, the release layer 11 includes a plurality of first release portions 111 and a plurality of second release portions 112, the first release portions 111 are arranged to overlap the first light reflection areas 1311 in the projection on the plane where the light reflection layer 13 is located, and the second release portions 112 are arranged to overlap the second light reflection areas 1312 in the projection on the plane where the light reflection layer 13 is located, and the first release portions 111 and the second release portions 112 are arranged to be disconnected.

[0087] For example, in the direction perpendicular to the plane where the reflection sheet 10 is located, the first release portions 111 are arranged to overlap the corresponding first light reflection areas 1311, the second release portions 112 are arranged to overlap the corresponding second light reflection areas 1312, and the first release portions 111 and the second release portions 112 are arranged to be disconnected.

[0088] For example, the first release portions 111 and the second release portions 112 are arranged to be disconnected, i.e., there can be a gap (first gap 11X) between the first release portions 111 and the second release portions 112, for example, the first release portions 111 and the second release portions 112 can be disconnected by laser irradiation, for example, as shown in FIG. 1, there is a first gap 11X between the first release portions 111 and the second release portions 112.

[0089] For example, the first release portions 111 and the second release portions 112 are arranged to be disconnected, when the reflection sheet 10 is used in the light-emitting substrate 100, the second release portions 112 can be torn off so that the reflection sheet 10 is attached to the substrate portion 21 through the adhesive layer 12, and the first release portions 111 can be retained in the light-emitting substrate 100, the first release portions 111 overlap the first light reflection areas 1311 and are retained in the light-emitting substrate 100, the first release portions 111 avoid direct exposure of the adhesive layer 12, block the adhesive layer from adhering foreign matter, thereby avoiding the problems of bulging and stress creases of the reflection sheet.

[0090] In some embodiments, the release layer 11 further includes a plurality of third release portions 113, the third release portions 113 are arranged to overlap the first gap 132 in the projection on the plane where the light reflection layer 13 is located, and the second release portions 112 are connected to the adjacent third release portions 113.

[0091] For example, in the direction perpendicular to the plane where the reflection sheet 10 is located, the third release portions 113 overlap the first gap 132, and at least some of the third release portions 113 are arranged to be connected to the adjacent second release portions 112.

[0092] For example, the release layer 11 can be integral, the first release portions 111 and the second release portions 112 are disconnected by laser irradiation, and at the same time, the third release portions 113 are retained in the reflection sheet 10, so that the structure of the reflection sheet 10 is simple and the manufacturing process is simple.

[0093] For example, the third release portion 113 is connected with the adjacent second release portion 112, so that the third release portion 113 and the second release portion 112 can be torn together when part of the release layer 11 is removed.

[0094] In some embodiments, at least part of the second release portion 112 is an integral structure (connected as a whole).

[0095] For example, part of the second release portion 112 is an integral structure, or all of the second release portion 112 is an integral structure, so that multiple or all of the second release portion 112 can be torn together when part of the release layer 11 is removed, simplifying the release layer 11 removal process.

[0096] In some embodiments, as shown in FIG. 1, at least part of the multiple second release portions 112 arranged integrally is located at the outer edge 10W of the reflective sheet 10.

[0097] For example, as shown in FIG. 1, in order to facilitate the removal of the release layer 11 on the reflective sheet 10, a tear tab 14 can be attached to the surface of the release layer 11 away from the light-reflecting layer 13, and at least one or part of the multiple second release portions 112 arranged integrally is located at the outer edge 10W of the reflective sheet 10, and the part of the outer edge 10W of the reflective sheet 10 where the tear tab 14 is attached can facilitate the removal of the multiple second release portions 112.

[0098] In other embodiments, as shown in FIG. 2 and FIG. 8, the size of the reflective sheet 10 is larger than the size of the substrate 20, and the outer edge of the reflective sheet 10 is arranged to be suspended relative to the substrate 20. At this time, the release layer 11 further includes multiple fourth release portions 115, which are located at the outer edge of the reflective sheet 10 or the outer edge of the light-reflecting layer 13 (the orthogonal projection of the fourth release portion 115 on the plane where the light-reflecting layer 13 is located overlaps with the outer edge of the light-reflecting layer 13). When the reflective sheet 10 is used for the light-emitting substrate 100, the fourth release portion 115 can also be retained as the first release portion 111 to avoid the direct exposure of the adhesive layer 12 at the outer edge of the reflective sheet 10, which blocks the adhesion of foreign matter to the adhesive layer, thereby better avoiding the problems of bulging and cracking of the reflective sheet under stress.

[0099] In some embodiments, the distance from the edge of the orthogonal projection of the first light-reflecting portion 131 on the plane where the release layer 11 is located to the corresponding first release portion 111 is 100 microns to 1000 microns.

[0100] For example, the distance from the edge of the orthographic projection of the first light-reflecting part 131 on the plane where the release layer 11 is located to the corresponding first release part 111 is a first distance d1, which can be any one of 100 microns, 200 microns, 300 microns, 400 microns, 500 microns, 600 microns, 700 microns, 800 microns, 900 microns, or 1000 microns.

[0101] For example, the distance from the edge of the orthographic projection of the first light-reflecting part 131 on the plane where the release layer 11 is located to the corresponding first release part 111 is greater than or equal to 100 microns and less than or equal to 1000 microns, i.e., the first distance d1 shown in FIG. 2 is 100 microns to 1000 microns. This can enable the first adhesive part 121 to be attached to two adjacent substrate parts 21 without causing the gap between the substrate part 21 and the first release part 111 to be too large, thereby avoiding the first adhesive part 121 from being exposed too much outside the gap between the substrate part 21 and the first release part 111.

[0102] For example, in some embodiments, as shown in FIG. 2 and FIG. 8, the width of the part of the release layer 11 beyond the light-reflecting layer 13 (the fourth release part 115) is a first width h1 (the distance from the edge of the orthographic projection of the light-reflecting layer 13 on the release layer 11 to the edge of the release layer 11), and the distance between the first release part 111 and the substrate part 21 is a second width h2, both the first width h1 and the second width h2 are 100 microns to 1000 microns, e.g., at least one of the first width h1 and the second width h2 is any one of 100 microns, 200 microns, 300 microns, 400 microns, 500 microns, 600 microns, 700 microns, 800 microns, 900 microns, or 1000 microns.

[0103] In some embodiments, as shown in FIG. 9 to FIG. 14, in the direction perpendicular to the extension direction of the outer edge of the first adhesive part 121, the first adhesive part 121 further comprises two first adhesive areas 1212 located on both sides of the first opening 1211, and the two sides of the first adhesive area 1212 are adjacent to the first opening 1211 and the second gap 12J, respectively.

[0104] For example, the first adhesive part 121 comprises the first opening 1211, and the first opening 1211 is superposed with the first light-reflecting area 1311 in the direction perpendicular to the plane where the reflective sheet 10 is located.

[0105] For example, the first opening 1211 refers to the part or material where no adhesive layer 12 is provided.

[0106] For example, the first opening 1211 refers to the part filled with air, and the release layer 11 is provided on the entire side away from the light-reflecting layer 13, and the first opening 1211 does not affect the release layer 11.

[0107] In some embodiments, the width of the first adhesive area 1212 on both sides of the first opening 1211 in a direction perpendicular to the extension direction of the outer edge of the first adhesive area 121 is 100-1000 microns.

[0108] For example, the width of the first adhesive area 122 on both sides of the first opening 1211 is a second width d2, which can be any of 100 microns, 200 microns, 300 microns, 400 microns, 500 microns, 600 microns, 700 microns, 800 microns, 900 microns, or 1000 microns.

[0109] For example, the width of the first adhesive area 122 on both sides of the first opening 1211 is greater than or equal to 100 microns and less than or equal to 1000 microns, i.e., the first width d2 (the width of the first sub-adhesive area 1212) shown in FIG. 9 is 100-1000 microns. This can allow the first sub-adhesive area 1212 to be attached to two adjacent substrate areas 21 without extending too much to the spacing area 22 and being exposed.

[0110] As shown in FIG. 12, the adhesive layer 12 can have other shapes in addition to those shown in FIG. 12. As shown in FIG. 12, the width of the first adhesive area 122 on one side of the first opening 1211 in each direction is 100-1000 microns. FIG. 12 shows that the first sub-width d21 and the second sub-width d22 are equal and are 100-1000 microns.

[0111] In some embodiments, as shown in FIG. 10, the adhesive layer 12 further includes a second opening 1213, which overlaps the outer edge of the reflective layer 13 in a direction perpendicular to the plane in which the reflective sheet 10 is located (the orthographic projection of the second opening 1213 on the plane in which the reflective layer 13 is located overlaps the outer edge of the reflective layer 13).

[0112] For example, the second opening 1213 refers to a part where no adhesive layer 12 is provided or material is filled.

[0113] For example, the second opening 1213 is filled with air, and the release layer 11 is provided on the entire surface, which does not affect the release layer 11 provided on the side of the adhesive layer 12 away from the reflective layer 13.

[0114] For example, in some embodiments, the size of the reflective sheet 10 is greater than the size of the substrate 20, and the outer edge of the reflective sheet 10 is arranged to be suspended relative to the substrate 20. In this case, the second opening 1213 can be arranged at the outer edge of the reflective sheet 10 (the normal projection of the second opening 1213 on the plane of the light-reflecting layer 13 overlaps the outer edge of the light-reflecting layer 13), so that the part overlapping the outer edge of the light-reflecting layer 13 is free of the material of the adhesive layer 12. In this way, the adhesive layer 12 is prevented from being directly exposed, and the adhesion of foreign matter is blocked, so that the problems of bulging and cracking under stress of the reflective sheet can be avoided, and the appearance, brightness, and light-emitting efficiency of the backlight module are improved.

[0115] In some embodiments, the reflective sheet 10 satisfies at least one of the following conditions: the first light-reflecting parts 131 are in a strip shape; the reflective sheet 10 is in a comb shape; and the reflective sheet 10 is in a zigzag shape.

[0116] In some embodiments, as shown in FIG. 3 and FIG. 11, the light-reflecting layer 13 further includes at least one second light-reflecting part 133, and the second light-reflecting part 133 is connected to the plurality of first light-reflecting parts 131.

[0117] For example, FIG. 3 and FIG. 11 show that the plurality of first light-reflecting parts 131 are in a strip shape, and the second light-reflecting part 133 is connected to the plurality of first light-reflecting parts 131 on one side of the plurality of first light-reflecting parts 131, so that the reflective sheet 10 is in a comb shape. In other embodiments, the second light-reflecting part 133 can be connected to some or all of the first light-reflecting parts 131 in other positions or shapes.

[0118] Please refer to FIG. 17 and FIG. 18, FIG. 17 is a fifth cross-sectional structure schematic diagram of a reflective sheet according to an embodiment of the present disclosure, and FIG. 18 is a fifth cross-sectional structure schematic diagram of a light-emitting substrate according to an embodiment of the present disclosure. The structural features in the above reflective sheet 10 can be combined.

[0119] In some embodiments, the release layer 11 further includes an inner release part 117 and an outer release part 116 surrounding the inner release part 117, and the outer release part 116 overlaps the outer edge of the light-reflecting layer 13, and the outer release part 116 is arranged separately from the inner release part 117.

[0120] For example, in some embodiments, the size of the reflective sheet 10 is greater than the size of the substrate 20, and the outer edge of the reflective sheet 10 is arranged to be suspended relative to the substrate 20. In this case, the second opening 1213 can be arranged at the outer edge of the reflective sheet 10 (the normal projection of the second opening 1213 on the plane of the light-reflecting layer 13 overlaps the outer edge of the light-reflecting layer 13), so that the part overlapping the outer edge of the light-reflecting layer 13 is free of the material of the adhesive layer 12. In this way, the adhesive layer 12 is prevented from being directly exposed, and the adhesion of foreign matter is blocked, so that the problems of bulging and cracking under stress of the reflective sheet can be avoided, and the appearance, brightness, and light-emitting efficiency of the backlight module are improved.

[0121] It should be noted that the outer separation portion 116 is the fourth separation portion 115 described above.

[0122] The present disclosure also provides a light-emitting substrate 100, as shown in FIGS. 7, 8, 15, and 16, which uses, includes, or is configured with the reflective sheet 10 of any one of the above, the reflective sheet 10 having at least part of the separation layer 11 removed.

[0123] In some embodiments, as shown in FIGS. 7, 8, 15, and 16, the reflective sheet 10 of the present disclosure can be used in a light-emitting substrate 100, which includes a substrate 20 including a plurality of substrate portions 21, with a spacing portion 22 provided between any two adjacent substrate portions 21. A plurality of light-emitting diodes 31 are provided on one side of the substrate 20. The reflective sheet 10 is provided on the same side of the substrate 20 as the plurality of light-emitting diodes 31, the first adhesive portion 121 is attached to any two adjacent substrate portions 21, and the reflective sheet 10 exposes the plurality of light-emitting diodes 31.

[0124] Referring to FIG. 19, FIG. 19 is a structural schematic diagram of a display device or a backlight module provided by an embodiment of the present disclosure.

[0125] The present disclosure also provides a backlight module 200, which uses, includes, or is configured with the reflective sheet 10 of any one of the above, the reflective sheet 10 having at least part of the separation layer 11 removed.

[0126] For example, the backlight module 200 includes the light-emitting substrate 100 of any one of the above.

[0127] For example, as shown in FIG. 19, the backlight module 200 includes a back plate 201, a substrate 20 provided on the back plate 201, a reflective sheet 10 attached to a surface of the substrate 20 away from the back plate 201, the reflective sheet 10 being provided on the same side of the substrate 20 as the plurality of light-emitting diodes 31, the first adhesive portion 121 being attached to any two adjacent substrate portions 21, the first gap 132 of the reflective sheet 10 exposing the plurality of light-emitting diodes 31, and the reflective sheet 10 further including a plurality of avoiding holes exposing the support column 202 or / and the fixing screw.

[0128] For example, as shown in FIG. 19, the backlight module 200 further includes an optical film 203 provided on a side of the support column 202 away from the back plate 201, and the optical film 203 can be a diffusion sheet, a prism sheet, or the like.

[0129] The present disclosure also provides a display device 1000, which uses, includes, or is configured with the reflective sheet 10 of any one of the above, the reflective sheet 10 having at least part of the separation layer 11 removed.

[0130] For example, the backlight module 200 comprises the light-emitting substrate 100 or the backlight module 200 of any one of the above.

[0131] For example, as shown in FIG. 19, the display device 1000 further comprises a liquid crystal cell 300, which is arranged on the side of the optical film 203 away from the substrate 10, and the liquid crystal cell 300 can be a liquid crystal display panel body.

[0132] For example, the display device can be a display panel or a display module.

[0133] For example, the display device can be a mobile phone, a notebook computer, a television, etc., but is not limited thereto.

[0134] It should be noted that in the above embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0135] The above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than limit them; although the present disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for some technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

[0136] Although the preferred embodiments of the present disclosure have been described, those skilled in the art can make further changes and modifications to these embodiments once they understand the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present disclosure.

[0137] Obviously, those skilled in the art can make various modifications and changes to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, if these modifications and changes of the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure also intends to include these modifications and changes.

Claims

1. A reflective sheet, wherein, The reflective sheet comprises: a reflective layer comprising a plurality of first reflective portions, and a first gap between adjacent first reflective portions; a glue layer disposed on one side of the reflective layer, and comprising a plurality of first glue portions, and a second gap between adjacent first glue portions, the first glue portions and the first reflective portions are stacked in the thickness direction of the reflective sheet, and the first gap and the second gap are stacked; a release layer disposed on the side of the glue layer away from the reflective layer, and the projection of the release layer on the plane of the reflective layer overlaps with the first reflective portions and the first gap; at least part of the first reflective portions comprises a first reflective region, and two second reflective regions on both sides of the first reflective region, the second reflective regions are adjacent to the first gap; the projection of the release layer on the first reflective region is disconnected from the projection of the release layer on the second reflective region, or / and the first glue portion comprises a first opening, and the projection of the first opening on the plane of the reflective layer overlaps with the first reflective region.

2. The reflector sheet according to claim 1, wherein The release layer comprises a plurality of first release portions and a plurality of second release portions, the projection of the first release portions on the plane of the reflective layer overlaps with the first reflective region, the projection of the second release portions on the plane of the reflective layer overlaps with the second reflective region, and the first release portions and the second release portions are disconnected.

3. The reflector sheet according to claim 2, wherein The release layer further comprises a plurality of third release portions, the projection of the third release portions on the plane of the reflective layer overlaps with the first gap, and the second release portions are connected to adjacent third release portions.

4. The reflector sheet according to claim 2, wherein At least part of the second release portions is an integral structure.

5. The reflector sheet according to claim 4, wherein At least part of the second release portions in the integral structure is located at the outer edge of the reflective sheet.

6. The reflector sheet according to claim 2, wherein The distance from the edge of the projection of the first reflective portion on the plane of the release layer to the corresponding first release portion is 100 microns to 1000 microns.

7. The reflector sheet according to claim 1, wherein In the direction perpendicular to the extension direction of the outer edge of the first glue portion, the first glue portion further comprises two first glue regions on both sides of the first opening, and the first glue regions are adjacent to the first opening and the second gap on both sides, respectively.

8. The reflector sheet according to claim 7, wherein In the direction perpendicular to the extension direction of the outer edge of the first glue portion, the width of the first glue region on both sides of the first opening is 100 microns to 1000 microns.

9. The reflector sheet according to claim 7, wherein The glue layer further comprises a second opening, and the second opening overlaps with the outer edge of the reflective layer in the direction perpendicular to the plane of the reflective sheet.

10. The reflector sheet according to claim 7, wherein The release layer further comprises an inner release portion and an outer release portion surrounding the inner release portion, the projection of the outer release portion on the plane of the reflective layer overlaps with the outer edge of the reflective layer, and the outer release portion is disconnected from the inner release portion.

11. The reflective sheet according to any one of claims 1 to 10, wherein The reflective sheet satisfies at least one of the following conditions: The first reflective portions are in a strip shape; The reflective sheet is in a comb shape; The reflective sheet is in a zigzag shape.

12. The reflector sheet according to claim 11, wherein The reflective layer further comprises at least one second reflective portion, and the second reflective portion connects a plurality of first reflective portions.

13. A light emitting substrate, wherein, The reflective sheet as claimed in any one of claims 1 to 12 is provided to remove at least part of the release layer.

14. The light-emitting substrate of claim 13, wherein, Comprise: a substrate comprising a plurality of substrate portions, a spacing portion being provided between two adjacent substrate portions; a plurality of light emitting diodes provided on one side of the substrate; the reflective sheet and the plurality of light emitting diodes are provided on the same side of the substrate, the first adhesive portion is attached to two adjacent substrate portions, and the reflective sheet exposes the plurality of light emitting diodes.

15. A backlight module, comprising: The reflective sheet as claimed in any one of claims 1 to 12 is provided to remove at least part of the release layer.

16. A display device comprising: The backlight module as claimed in claim 15 is provided.

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