CN114859601B - Reflection assembly, backlight module, display module and display device - Google Patents
Reflection assembly, backlight module, display module and display device Download PDFInfo
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- CN114859601B CN114859601B CN202210461588.5A CN202210461588A CN114859601B CN 114859601 B CN114859601 B CN 114859601B CN 202210461588 A CN202210461588 A CN 202210461588A CN 114859601 B CN114859601 B CN 114859601B
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133605—Direct backlight including specially adapted reflectors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/52—PV systems with concentrators
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- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
Abstract
The application provides a reflecting assembly, a backlight module, a display module and a display device, wherein the reflecting assembly comprises a reflecting cover, a reflecting surface for reflecting light is arranged on the reflecting cover, a peripheral area of the reflecting cover is distributed around a main body area, the peripheral area comprises a plurality of edge reflecting units distributed around the main body area, adjacent second reflecting cups in the edge reflecting units are connected through connecting parts, one side surface of the connecting parts, which is opposite to the reflecting surface, is a plane with a preset area S, the edge reflecting units are fixed on a supporting body through plane bonding, the bonding area of the edge reflecting units and the supporting body is increased by the plane, and the connection strength of the peripheral area and the supporting body is enhanced, so that the structural strength of the peripheral area is enhanced, the possibility of deformation of the peripheral area in high temperature and other environments is reduced, and the uniformity of the reflecting assembly is facilitated.
Description
Technical Field
The present application relates to backlight modules, and particularly to a reflective assembly, a backlight module, a display module and a display device.
Background
The backlight module is a device for providing a light source behind the liquid crystal display, and the light-emitting effect of the backlight module directly influences the visual effect of the liquid crystal display module. The liquid crystal itself does not emit light, and it displays graphics or characters as a result of the modulation of the light generated by the backlight module.
In the prior art, a backlight module generally uses a reflective structure to reflect light emitted by a light source such as a light emitting diode to provide a light source. How to ensure the reflection uniformity of the reflection structure and improve the light-emitting uniformity of the backlight module is always a research direction in the industry.
Disclosure of Invention
In view of the above, the present application provides a reflective assembly, a backlight module, a display module and a display device, wherein the reflective assembly can reduce the possibility of deformation, and is beneficial to uniformity of reflection.
In a first aspect, the present application provides a reflective assembly comprising a reflective enclosure comprising a body region and a peripheral region, the peripheral region being distributed around the body region, the body region comprising a plurality of body reflective elements distributed in an array, the peripheral region comprising a plurality of edge reflective elements distributed around the body region, the reflective enclosure comprising a reflective surface for reflecting light; the main body reflection unit comprises a first reflection cup; the edge reflection unit comprises second reflection cups and connection parts connected between the adjacent second reflection cups, one side surface of the connection parts, which is opposite to the reflection surface, is a plane with a preset area S, and the edge reflection unit is fixed on the support body through plane adhesion.
Through the structure, the edge reflection unit is fixed on the support body through plane bonding, the bonding area of the edge reflection unit and the support body is increased by the plane, and the connection strength of the peripheral area and the support body is enhanced, so that the structural strength of the peripheral area is enhanced, the deformation possibility of the peripheral area in high temperature and other environments is reduced, and the uniformity of reflection of the reflection assembly is facilitated.
In the reflection assembly provided by some embodiments of the present application, the first reflection cup includes a first reflection bottom and a first reflection wall that are connected to each other, the first reflection bottom and the first reflection wall enclose a first reflection space, a first reflection surface is formed by a surface of the first reflection bottom and a surface of the first reflection wall facing the first reflection space, and the surface of the first reflection bottom facing the support body is used as a first bonding surface with a preset area S1 to be bonded and fixed to the support body, so that the support body can support the first reflection cup through the first reflection bottom, which is favorable for maintaining structural stability of a main body area of the reflection cover.
In the reflection assembly provided by some embodiments of the present application, the second reflection cup includes a second reflection bottom and a second reflection wall that are connected to each other, the second reflection bottom and the second reflection wall enclose a second reflection space, a second reflection surface is formed by the surfaces of the second reflection bottom and the second reflection wall facing the second reflection space, and the surface of the second reflection bottom facing the support body is used as a second bonding surface with a preset area S2 to be bonded and fixed to the support body, so that the support body can support the second reflection cup through the second reflection bottom, which is beneficial to maintaining the structural stability of the peripheral area of the reflection cover.
In the reflection assembly provided by some embodiments of the present application, the bonding area m1=xs+ys2 between the edge reflection unit and the support, where m1/y is greater than or equal to S1, where x is the number of planes in the edge reflection unit, y is the number of second reflection cups in the edge reflection unit,
through the technical scheme, the area which is uniformly distributed to each second reflecting cup and used for being bonded with the supporting body is larger than or equal to the area which is used for being bonded with the supporting body on each first reflecting cup, so that the bonding strength of the edge reflecting unit and the supporting body is larger than or equal to the bonding strength of the main body reflecting unit and the supporting body, the connection strength of the peripheral area in the reflecting cover and the supporting body is larger than or equal to the connection strength of the main body area, the possibility that the peripheral area is deformed such as warping under high temperature and other environments can be effectively reduced, the uniformity of reflection of the reflecting assembly is facilitated, and the optical effect of the reflecting assembly is improved.
In some embodiments of the present application, a reflective assembly is provided, wherein an edge reflective unit includes a first sub-unit and a second sub-unit, the first sub-unit is located at four top corners of the reflective assembly, and the second sub-unit is arranged in a row or column between the two first sub-units; the projection area of the first subunit on the support body is twice that of the second subunit on the support body, and the projection area of the second subunit on the support body is twice that of the main body reflection unit on the support body.
In the reflection assembly provided by some embodiments of the present application, the first subunit includes four second reflection cups distributed in an array, and a connection portion is connected between two adjacent second reflection cups; the second subunit includes two second reflective cups and a connection between the two second reflective cups.
The arrangement mode is beneficial to arranging the first reflecting cup and the second reflecting cup in the reflecting cover in rows or columns, and facilitates the structural arrangement of the reflecting cover.
In the reflection assembly provided by some embodiments of the present application, a compensating reflection surface for reflecting light is disposed on a surface of the connection portion facing the reflection surface, the area of the compensating reflection surface is A1, the area of the second reflection surface on the second reflection wall is A2, and A1 is greater than or equal to A2/5, so that the reflection area of the compensating reflection surface in the connection portion is effectively increased, and the reflection effect of the connection portion is enhanced.
In the reflection assembly provided by some embodiments of the present application, an included angle between the compensating reflection surface and the second reflection surface on the second reflection bottom is B1, an included angle between the second reflection surface on the second reflection wall and the second reflection surface on the second reflection bottom is B2, and the included angle is 90 ° -b1=b2-120 °, which is favorable for increasing the bonding area between the second reflection bottom and the support body, and improving the connection strength between the edge reflection unit and the support body.
In the reflection assembly provided by some embodiments of the present application, the first reflection bottom is provided with a first mounting hole, and the light emitting device extends into the first reflection space through the first mounting hole; the second reflection bottom is provided with a second mounting hole, and the light emitting device stretches into the second reflection space through the second mounting hole, so that the light emitting device can be mounted in the first reflection space and the second reflection space.
In some embodiments of the present application, the reflection assembly further includes a frame surrounding the reflection housing, the frame is provided with a protrusion, the protrusion is configured to extend to the reflection housing, the protrusion presses the second reflection cup on the support body, and the frame presses the edge of the second reflection cup on the support body by using the protrusion, so that deformation such as warpage of the edge of the second reflection cup can be alleviated.
In some embodiments of the present application, the reflective assembly further includes a reflective sheet for reflecting light, where the reflective sheet is connected to a side surface of the frame away from the support body, and the reflective sheet can compensate light of the light emitting device reflected by the edge reflective unit, so that the reflective efficiency of the reflective assembly is improved, and the edge reflective strength of the reflective assembly is consistent with the internal reflective strength as much as possible, so that the reflective uniformity of the reflective assembly is improved.
In the reflection assembly provided by some embodiments of the present application, the projection of the protrusion on the support body is separated from the projection of the second mounting hole on the support body, so that the protrusion can be prevented from shielding the second mounting hole, and the possibility that the protrusion interferes with the light emitting device in the second mounting hole is reduced.
In the reflection assembly provided by some embodiments of the present application, the main body reflection unit is connected to an adjacent main body reflection unit or edge reflection unit through a support portion, the reflection assembly further includes a support member, the support member is connected to the support body, the support member forms a plurality of accommodating spaces, the main body reflection unit and the edge reflection unit are both disposed in the accommodating spaces, and the support member is supported by the support portion.
The support piece supports the reflecting cover, the connection strength between the middle area of the reflecting cover and the support body is enhanced, the structural strength of the reflecting cover is enhanced, the possibility that the middle area of the reflecting cover is deformed in a tatami or the like under high temperature and other environments is reduced, and the uniformity of reflection of the reflecting assembly is improved.
In some embodiments of the present application, the support member includes a plurality of first support plates disposed at intervals and a plurality of second support plates disposed at intervals, and the first support plates and the second support plates are connected to each other to define a receiving space.
In some embodiments of the present application, the supporting portion is provided with a slot, and the slot is disposed corresponding to the first support plate and the second support plate, and the first support plate and the second support plate are inserted into the slot.
In a second aspect, the present application provides a backlight module, which includes a light emitting device, a support, and a reflective assembly provided by any one of the above technical solutions, where the reflective cover and the light emitting device are both connected to the support, and the light emitting device is disposed in the reflective cover.
In a third aspect, the present application provides a display module, which includes the backlight module provided by the foregoing technical solution.
In a third aspect, the present application provides a display device, which includes the display module provided by the foregoing technical solution.
The technical scheme provided by the embodiment of the disclosure at least brings the following beneficial effects:
the application provides a reflecting assembly, which comprises a reflecting cover, wherein a reflecting surface for reflecting light is arranged on the reflecting cover, a peripheral area of the reflecting cover is distributed around a main body area, the peripheral area comprises a plurality of edge reflecting units distributed around the main body area, adjacent second reflecting cups in the edge reflecting units are connected through connecting parts, one side surface of each connecting part, which is opposite to the reflecting surface, is a plane with a preset area S, the edge reflecting units are fixed on a supporting body through plane bonding, the bonding area of the edge reflecting units and the supporting body is increased by the plane, and the connection strength of the peripheral area and the supporting body is enhanced, so that the structural strength of the peripheral area is enhanced, the possibility of deformation of the peripheral area in high temperature and other environments is reduced, and the uniformity of reflection of the reflecting assembly is facilitated.
The application provides a backlight module which comprises a light emitting device, a support body and a reflecting assembly provided by the technical scheme, wherein the light emitting device is arranged in a reflecting cover, and the reflecting cover and the light emitting device are connected with the support body. The backlight module comprises the reflection assembly provided by the technical scheme, and the light rays emitted by the backlight module have higher uniformity.
The application provides a display module, which has uniform display effect because the display module comprises the backlight module provided by the technical scheme.
The application provides a display device, which has uniform display effect and is beneficial to improving the use experience of users because the display device comprises the display module provided by the technical scheme.
The foregoing description is only an overview of the present application, and is intended to be implemented in accordance with the teachings of the present application in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present application more readily apparent.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
FIG. 1 is a top view of a reflective assembly according to some embodiments of the present application;
FIG. 2 is a schematic view of a partial reflector according to some embodiments of the present application;
FIG. 3 is a schematic diagram of a partially reflective assembly according to some embodiments of the present application;
FIG. 4 is a top view of a support provided in some embodiments of the present application;
fig. 5 is a schematic view of a structure of a support member and a frame after being connected according to some embodiments of the present application.
Reference numerals in the specific embodiments are as follows:
1. a reflection cover; 10. a support body; 12. a main body reflection unit; 121. a first reflective cup; 1211. a first reflective bottom; 12111. a first mounting hole; 1212. a first reflective wall; 1213. a first reflective space; 1214. a first reflecting surface; 13. an edge reflection unit; 131. a second reflective cup; 1311. a second reflective bottom; 13111. a second mounting hole; 1312. a second reflecting wall; 1313. a second reflection space; 1314. a second reflecting surface; 14. a connection part; 141. compensating the reflecting surface; 20. a light emitting device; 2. a frame; 21. a protrusion; 3. a reflection sheet; 4. a support; 41. an accommodating space; 42. a first support plate; 43. a second support plate; 5. a support part; 51. a slot.
Detailed Description
Embodiments of the technical scheme of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present application, and thus are merely examples, and are not intended to limit the scope of the present application.
It should be noted that unless otherwise indicated, technical or scientific terms used in the embodiments of the present application should be given the ordinary meanings as understood by those skilled in the art to which the embodiments of the present application belong.
In the description of the embodiments of the present application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present application.
Furthermore, the technical terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.
In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to specific circumstances.
In the description of embodiments of the application, unless expressly specified and limited otherwise, a first feature "up" or "down" on a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
The backlight module is one of the key components of the liquid crystal display panel, and can provide enough light sources with uniform brightness and distribution so that the backlight module can normally display images. With the continuous development of the liquid crystal display technology, the application field of the liquid crystal display device is continuously widened. The backlight module provides a light source for the liquid crystal display device and mainly comprises a light emitting device, a reflecting component and the like, wherein the reflecting component has higher reflectivity and is used for reflecting light rays emitted by the light emitting device.
In the related art, in order to obtain high reflection efficiency and reflection uniformity, a reflection structure is generally composed of a plurality of reflection cups processed from a material having excellent reflectivity. The inventor notices that in an application scene with a large change of environmental temperature such as high temperature, the change of the temperature of the reflecting structure can cause the structure to expand and contract, and the stress is changed, so that the reflecting structure is deformed such as tattooed or warped around, which can reduce the uniformity of reflection of the reflecting structure and influence the optical effect of the reflecting structure.
In order to alleviate the problem of deformation of the reflective structure, the applicant has found that a support structure may be provided on the reflective structure to support the deformation of the reflective structure. Specifically, the connecting part with the supporting function is additionally arranged at the position which is easy to deform in the reflecting structure, and the connecting part is connected with the supporting body, so that the connecting area of the supporting body and the reflecting structure is increased, the supporting body can better support the reflecting structure, the deformation of the reflecting structure is relieved, and the uniformity of reflecting of the reflecting structure is improved.
Based on the above consideration, in order to solve the problems of uneven reflection, poor optical effect and the like caused by deformation of the reflection structure, the inventor has conducted intensive studies and designed a reflection assembly, and additionally provided a connecting part in the peripheral region of the reflection housing forming the reflection assembly, and by adhesively fixing the connecting part to the support body, the adhesion area of the reflection assembly and the support body is increased, and the connection strength of the peripheral region of the reflection housing and the support body is enhanced, thereby enhancing the structural strength of the peripheral region, reducing the possibility of deformation of the peripheral region in high temperature and other environments, and being beneficial to improving the reflection uniformity of the reflection assembly.
The reflection assembly disclosed by the embodiment of the application can be used for backlight modules, and can also be used for light-emitting equipment such as matrix car lamps, so that the uniformity of light emission of the light-emitting equipment is improved, and the optical effect of the light-emitting equipment is improved.
The technical schemes of the reflecting component, the backlight module, the display module and the display device provided by the specific embodiments of the application are further described below.
Some embodiments of the present application provide a reflection assembly, as shown in fig. 1, which includes a reflection housing 1, the reflection housing 1 including a main body region and a peripheral region, the peripheral region being distributed around the main body region, the main body region including a plurality of main body reflection units 12 distributed in an array, the peripheral region including a plurality of edge reflection units 13 distributed around the main body region, the reflection housing 1 including a reflection surface for reflecting light; the main body reflection unit 12 includes a first reflection cup 121; as shown in fig. 2 and 3, the edge reflection unit 13 includes second reflection cups 131 and connection portions 14 connected between adjacent second reflection cups 131, a surface of the connection portions 14 facing away from the reflection surface is a plane having a predetermined area S, and the edge reflection unit 13 is fixed to the support body 10 by planar bonding.
The reflecting cover 1 refers to a structural member for reflecting light in the reflecting assembly, and includes a reflecting surface thereon for reflecting light. In some embodiments of the application, the reflector 1 is made of a nano-reflector plate formed of polyethylene terephthalate (Polyethylene terephthalate, PET). The nano-reflecting plate is manufactured by adopting a foaming process through a PET base material, and the PET base material is required to be subjected to a gas absorption process in a high-pressure gas tank for 48 hours. The obtained nano reflecting plate does not use harmful raw materials, has high smoothness on the surface, white color, opacity and thickness of 0.5mm, has total reflectivity of 100.4%, diffuse reflectivity of 94.7% and specular reflectivity of 5.7%, and has good uniformity on the reflecting capability of each wavelength of the light-emitting diode light source. The nanometer reflecting plate accords with the combustion standard of foaming material UL94-HBF, the tensile strength is 7.2MPa, the tearing strength is 1060N/cm, the bending strength is 6.3MPa, and the average linear expansion coefficient is 4.7 x 10 in the temperature range of 30-70 DEG C -5 ℃ -1 The nano-reflecting plate can be subjected to secondary processing by cutting, stamping, bending, heating and the like. Alternatively, the thickness of the reflecting cover 1 formed by the secondary processing of the nano reflecting plate is 0.2mm, and the specific thickness of the reflecting cover 1 can be selected by a person skilled in the art according to practical situations.
The main body region and the peripheral region are regions on the reflection housing 1, and the peripheral region surrounds the periphery arranged on the main body region. The plurality of main body reflecting units 12 in the main body area are distributed in an array so as to facilitate the structure of the reflecting cover 1 to be uniformly arranged, thereby enabling the main body area to uniformly reflect the light rays emitted by the light emitting device 20 and being beneficial to improving the optical effect of the reflecting cover 1. The first reflecting cup 121 in the main body reflecting unit 12 is formed by secondary processing of the nano-reflecting plate, and in some embodiments, the secondary processing adopts a hot pressing plastic suction process, and a person skilled in the art can process the nano-reflecting plate into the first reflecting cup 121 and form the main body reflecting unit 12 by adopting a suitable secondary processing process according to practical situations.
The connection portion 14 refers to a structural member in the edge reflection unit 13, which is connected between adjacent second reflection cups 131 in the edge reflection unit 13. The connecting part 14 is provided with the plane for adhering and fixing the supporting body 10 on the surface of one side opposite to the reflecting surface, so that the adhering and fixing area of the edge reflecting unit 13 and the supporting body 10 is increased, the connection strength between the peripheral area of the reflecting cover 1 and the supporting body 10 is enhanced, the structural strength of the peripheral area is enhanced, the possibility that the peripheral area is deformed such as warping under high temperature and other environments is reduced, the reflecting uniformity of the reflecting assembly is facilitated, and the optical effect of the reflecting assembly is improved. A person skilled in the art can verify the deformation of the reflecting component through a high-temperature reliability experiment, disassemble the reflecting component after the high-temperature reliability experiment, and observe whether the reflecting component is deformed such as compressed, warped or the like; the brightness variation of the light reflected by the reflecting cover 1 can also be tested by means of an optical detection device.
The connection portion 14 and the second reflecting cup 131 in the edge reflecting unit 13 are also formed by secondary processing of the nano-reflecting plate, and in some embodiments, the secondary processing adopts a hot pressing and vacuum molding process, and a person skilled in the art can process the nano-reflecting plate into the connection portion 14 and the second reflecting cup 131 and form the edge reflecting unit 13 by adopting a suitable secondary processing process according to practical situations.
In some embodiments of the present application, the main body reflection unit 12 in the main body area and the edge reflection unit 13 in the peripheral area are integrally formed, so that the reflection housing 1 is of an integral structure, which is beneficial to not only improving the integral structural strength of the reflection housing 1, but also improving the manufacturing convenience of the reflection housing 1 and improving the production efficiency.
In some embodiments of the present application, as shown in fig. 3, the first reflective cup 121 includes a first reflective bottom 1211 and a first reflective wall 1212 connected to each other, the first reflective bottom 1211 and the first reflective wall 1212 enclose a first reflective space 1213, a surface of the first reflective bottom 1211 and the first reflective wall 1212 facing the first reflective space 1213 forms a first reflective surface 1214, and a surface of the first reflective bottom 1211 facing the support body 10 is adhesively fixed to the support body 10 as a first adhesive surface having a preset area S1.
The first reflecting bottom 1211 and the first reflecting wall 1212 refer to structures for forming the first reflecting cup 121, and are connected to each other to form the first reflecting cup 121 having an open cup shape. The first reflective space 1213 refers to a space in the first reflective cup 121 capable of accommodating the light emitting device 20, and is surrounded by the first reflective bottom 1211 and the first reflective wall 1212, wherein the surfaces of the first reflective bottom 1211 and the first reflective wall 1212 facing the first reflective space 1213 form a first reflective surface 1214, and the first reflective surface 1214 is a part of the reflective surface for reflecting light emitted by the light emitting device 20.
The surface of the first reflective bottom 1211 facing the support body 10 is adhered and fixed to the support body 10 as a first adhesive surface, so that the support body 10 can support the first reflective cup 121 through the first reflective bottom 1211, which is beneficial to maintaining the structural stability of the main body region of the reflective cover 1.
In some embodiments of the present application, the first reflective base 1211 is provided with a first mounting hole 12111, and the light emitting device 20 protrudes into the first reflective space 1213 through the first mounting hole 12111, so that light emitted from the light emitting device 20 can be reflected by the first reflective surface 1214 in the first reflective space 1213. Alternatively, the light emitting device 20 is attached to the side of the support body 10 near the first reflecting cup 121 such that the light reflecting device can protrude into the first reflecting space 1213 when the first reflecting cup 121 is attached to the support body 10.
In some embodiments of the present application, the second reflective cup 131 includes a second reflective bottom 1311 and a second reflective wall 1312 that are connected to each other, the second reflective bottom 1311 and the second reflective wall 1312 enclose a second reflective space 1313, a surface of the second reflective bottom 1311 and the second reflective wall 1312 facing the second reflective space 1313 forms a second reflective surface 1314, and a surface of the second reflective bottom 1311 facing the support 10 is adhesively fixed to the support 10 as a second adhesive surface having a preset area S2.
The second reflecting bottom 1311 and the second reflecting wall 1312 refer to structures for forming the second reflecting cup 131, and are connected to each other to form the second reflecting cup 131 having an open cup shape. The second reflective space 1313 is a space in the second reflective cup 131 capable of accommodating the light emitting device 20, and is surrounded by the second reflective bottom 1311 and the second reflective wall 1312, where the surfaces of the second reflective bottom 1311 and the second reflective wall 1312 facing the second reflective space 1313 form a second reflective surface 1314, and the second reflective surface 1314 is a part of the reflective surface and is used for reflecting light emitted by the light emitting device 20.
The surface of the second reflecting bottom 1311 facing the supporting body 10 is used as a second bonding surface to be bonded and fixed on the supporting body 10, so that the supporting body 10 can support the second reflecting cup 131 through the second reflecting bottom 1311, which is beneficial to maintaining the structural stability of the peripheral area of the reflecting cover 1.
In some embodiments of the present application, the second reflecting bottom 1311 is provided with second mounting holes 13111, and the light emitting devices 20 protrude into the second reflecting space 1313 through the second mounting holes 13111, so that light emitted from the light emitting devices 20 can be reflected by the second reflecting surface 1314 in the second reflecting space 1313. Alternatively, the light emitting device 20 is attached to the side of the support body 10 near the second reflecting cup 131 such that the light reflecting device can extend into the second reflecting space 1313 when the second reflecting cup 131 is attached to the support body 10.
In some embodiments of the present application, the bonding area m1=xs+ys2 of the edge reflection unit 13 and the support body 10, where x is the number of planes in the edge reflection unit 13 and y is the number of second reflection cups 131 in the edge reflection unit 13, and m1/y is equal to or greater than S1.
Through the above technical scheme, the area that is used for bonding with supporter 10 on evenly dividing to every second reflector cup 131 is greater than or equal to the area that is used for bonding with supporter 10 on every first reflector cup 121, make the bonding strength of edge reflection unit 13 and supporter 10 be greater than or equal to the bonding strength of main part reflection unit 12 and supporter 10, be favorable to making the joint strength of the border district in reflector 1 and supporter 10 be greater than or equal to the joint strength of main part district, can effectively reduce the possibility that the border district takes place warp etc. deformation under environment such as high temperature, be favorable to the homogeneity of this reflection subassembly reflection, thereby improve the optical effect of this reflection subassembly.
In some embodiments of the application, the edge reflection unit 13 comprises a first sub-unit and a second sub-unit, the first sub-unit being located at the four corners of the reflection assembly, the second sub-unit being arranged in a row or column between the two first sub-units; the projected area of the first sub-unit on the support body 10 is twice the projected area of the second sub-unit on the support body 10, and the projected area of the second sub-unit on the support body 10 is twice the projected area of the main body reflection unit 12 on the support body 10.
The first sub-unit and the second sub-unit are each distributed along the periphery of the main body reflection unit 12 such that the main body reflection unit 12 is surrounded by the edge reflection unit 13. The first sub-units are positioned at four top corners of the reflective assembly, and the second sub-units are arranged in rows or columns between the two first sub-units, which means that the first sub-units are arranged at the junction of the intersecting second sub-unit rows and second sub-unit columns.
The projected area of the first sub-unit on the support body 10 is twice the projected area of the second sub-unit on the support body 10, meaning that the first sub-unit is formed by two adjacent second sub-units, facilitating the arrangement of the edge reflection unit 13 at the periphery of the reflection housing 1.
In some embodiments of the present application, the main body reflection unit 12 includes a first reflection cup 121, and the projection area of the first reflection cup 121 on the support body 10 is equal to the projection area of the second reflection cup 131 on the support body 10; the projection area of the second sub-unit on the supporting body 10 is twice of the projection area of the main body reflection unit 12 on the supporting body 10, which means that the second sub-unit comprises two second reflection cups 131, and the two second reflection cups 131 are connected with the main body reflection unit 12 through a connecting part 14, so that the two second reflection cups 131 form a second sub-unit whole; the projection area of the first subunit on the support body 10 is twice that of the second subunit on the support body 10, which means that the first subunit comprises four second reflecting cups 131 distributed in an array, and any two adjacent second reflecting cups 131 are connected through a connecting part 14, so that the four second reflecting cups 131 form a whole first subunit. The above arrangement is advantageous in that the first and second reflecting cups 121 and 131 in the reflecting cover 1 are arranged in rows or columns, facilitating the structural arrangement of the reflecting cover 1.
In some embodiments of the present application, a compensating reflection surface 141 for reflecting light is disposed on a surface of the connecting portion 14 facing the reflection surface, the area of the compensating reflection surface 141 is A1, and the area of the second reflection surface 1314 on the second reflection wall 1312 is A2, where A1 is greater than or equal to A2/5.
The compensating reflection surface 141 is a structural surface of the connection portion 14, faces the reflection surface and forms a part of the reflection surface, and is used for reflecting the light emitted by the light emitting device 20, so that the connection portion 14 can reflect the light emitted by the light emitting device 20, and the reflection efficiency of the reflection housing 1 is improved. In some embodiments of the present application, by setting A1. Gtoreq.A2/5, the reflection area of the compensation reflection surface 141 in the connection portion 14 is effectively increased, and the reflection effect of the connection portion 14 is enhanced.
In some embodiments of the present application, the angle between the compensating reflective surface 141 and the second reflective surface 1314 on the second reflective bottom 1311 is B1, and the angle between the second reflective surface 1314 on the second reflective wall 1312 and the second reflective surface 1314 on the second reflective bottom 1311 is B2, 90 ° +.b1=b2+.ltoreq.120°.
Through the above arrangement, the included angle B1 between the compensating reflection surface 141 and the second reflection bottom 1311 and the included angle B2 between the second reflection wall 1312 and the second reflection bottom 1311 are equal, and the reflection angles of the connection portion 14 and the second reflection wall 1312 are the same, which is beneficial to improving the uniformity of reflection of the reflection surface in the edge reflection unit 13. B1 and B2 are in the range of 90 degrees to 120 degrees, which is beneficial to increasing the bonding area of the second reflecting bottom 1311 and the supporting body 10 and improving the connection strength of the edge reflecting unit 13 and the supporting body 10.
In some embodiments of the application, the reflective assembly further comprises a frame 2 surrounding the reflective housing 1, the frame 2 being provided with a protrusion 21, the protrusion 21 being configured to extend towards the reflective housing 1, the protrusion 21 pressing the second reflective cup 131 against the support body 10.
The frame 2 is a structure surrounding and connected to the outer edge of the reflection housing 1, and the frame 2 is connected to the support body 10 to connect the outer edge of the reflection housing 1 to the frame 2. The protrusion 21 is a structure protruding from the frame 2, and protrudes toward the edge of the reflective cover 1, and the frame 2 presses the edge of the second reflective cup 131 against the support body 10 by the protrusion 21, so that deformation such as warpage of the edge of the second reflective cup 131 can be reduced. Optionally, the chamfer is provided on the protrusion 21, so that the probability of scratching the protrusion 21 when being matched with the reflecting cover 1 can be reduced.
The protrusions 21 and the frame 2 may be made of at least one of PET material and polycarbonate material, or may be made of other materials with higher hardness, and the materials of the protrusions 21 and the frame 2 may be selected by those skilled in the art according to practical situations. The protrusions 21 and the frame 2 may be formed by 3D printing, or may be formed by molding or die forming, and a person skilled in the art may select a method for manufacturing the protrusions 21 and the frame 2 according to actual situations.
In some embodiments of the present application, the frame 2 is provided with a plurality of protrusions 21, and the protrusions 21 are uniformly arranged at equal intervals along the frame 2, so that the acting force of the protrusions 21 on the second reflecting cup 131 is uniformly distributed along the edge of the reflecting cover 1, which is beneficial to preventing the edge of the reflecting cover 1 from being deformed due to uneven acting force distribution. Alternatively, the projection shape of the protrusion 21 on the support body 10 may be at least one of arc, square or trapezoid, and those skilled in the art may select according to the actual situation.
Optionally, the edge of the second reflecting cup 131 near the frame 2 is provided with an opening, the protrusion 21 of the frame 2 presses the edge of the opening, and the opening is arranged so that the protrusion 21 presses the edge of the second reflecting cup 131. Alternatively, the number of the buckles pressed on the opening of the second reflecting cup 131 may be one, two or more, and one skilled in the art may select the number of the buckles pressed on the opening of each second reflecting cup 131 according to practical situations.
In some embodiments of the application, the reflective assembly further comprises a reflective sheet 3 for reflecting light, the reflective sheet 3 being attached to the side of the frame 2 remote from the support body 10.
The reflector plate 3 is a sheet structure with excellent reflectivity, and is attached to the frame 2, when the light emitted by the light emitting device 20 irradiates the reflector plate 3, the light can be reflected by the reflector plate 3, so that the reflector plate 3 can compensate the light of the light emitting device 20 reflected by the edge reflection unit 13, the reflection efficiency of the reflection assembly is improved, the edge reflection intensity of the reflection assembly is consistent with the internal reflection intensity as much as possible, and the reflection uniformity of the reflection assembly is improved.
In some embodiments of the present application, the projection of the protrusion 21 on the support body 10 is separated from the projection of the second mounting hole 13111 on the support body 10, so that the protrusion 21 can be prevented from shielding the second mounting hole 13111, and the possibility of interference of the protrusion 21 with the light emitting device 20 in the second mounting hole 13111 is reduced.
In some embodiments of the present application, the main body reflection unit 12 is connected to the adjacent main body reflection unit 12 or edge reflection unit 13 through the supporting portion 5, the reflection assembly further includes a supporting member 4, the supporting member 4 is connected to the supporting body 10, the supporting member 4 forms a plurality of accommodating spaces 41, the main body reflection unit 12 and the edge reflection unit 13 are disposed in the accommodating spaces 41, and the supporting member 4 is supported on the supporting portion 5.
The support 5 is a structure between the main body reflection unit 12 and the adjacent main body reflection unit 12 or the adjacent edge reflection unit 13. The support 4 is a structure connected to the support body 10, on which a plurality of accommodating spaces 41 are formed, and when the main body reflection unit 12 and the edge reflection unit 13 are placed in the accommodating spaces 41, the support 4 is connected to the support portion 5 to support the reflection housing 1, so that the connection strength between the middle region of the reflection housing 1 and the support body 10 is enhanced, the structural strength of the reflection housing 1 is enhanced, the possibility that the middle region of the reflection housing 1 is deformed such as contracted in high temperature and other environments is reduced, and the uniformity of reflection of the reflection assembly is improved.
In some embodiments of the present application, as shown in fig. 4, the support 4 includes a plurality of first support plates 42 disposed at intervals and a plurality of second support plates 43 disposed at intervals, and the first support plates 42 and the second support plates 43 are connected to each other to define a receiving space 41. Optionally, the extending direction of the first support plate 42 is a direction perpendicular to the supporting body 10, the plurality of first support plates 42 are arranged in parallel, the plurality of second support plates 43 are arranged in parallel, and the second support plates 43 are perpendicularly connected to the first support plates 42, so that the accommodating space 41 is in a cuboid structure, and the plurality of accommodating spaces 41 are distributed in an array, so that the main body reflecting units 12 and the edge reflecting units 13 distributed in an array are conveniently installed in the accommodating space 41.
Alternatively, as shown in fig. 5, the supporting member 4 and the frame 2 may be integrally formed, and may be manufactured by an integrally forming process of mold forming, so that the manufacturing of the reflection assembly is convenient, which is advantageous for improving the manufacturing efficiency of the reflection assembly.
Alternatively, the thickness of the first and second support plates 42 and 43 is set to be in the range of 0.2mm to 0.6mm so that the support 4 has a good supporting effect on the reflection housing 1. In some embodiments, the thickness of the first support plate 42 and the second support plate 43 is set to 0.4mm, and the support member 4 has a good supporting effect on the reflection housing 1.
In some embodiments of the present application, the supporting portion 5 is provided with a slot 51, the slot 51 is disposed corresponding to the first support plate 42 and the second support plate 43, and the first support plate 42 and the second support plate 43 are inserted into the slot 51.
The slots 51 are correspondingly arranged with the first support plates 42 and the second support plates 43, so that the first support plates 42 and the second support plates 43 are connected with the supporting part 5 through the insertion and connection of the slots 51. The width of the slot 51 is set to range from 0.2mm to 0.6mm so that the slot 51 can be matched with the first and second leg plates 42 and 43. When the thicknesses of the first support plate 42 and the second support plate 43 are set to 0.4mm, the width of the slot 51 is 0.4mm, and the slot 51 can be connected with the first support plate 42 and the second support plate 43 in a matched manner.
Optionally, the portions of the first support plate 42 and the second support plate 43 near the supporting portion 5 are provided with chamfers, so that the first support plate 42 and the second support plate 43 are smoothly inserted into the insertion groove 51. In some embodiments, the insertion groove 51 is provided as a V-groove, and an opening of the V-groove is provided toward the support 4, so that the first and second leg plates 42 and 43 can be smoothly inserted into the insertion groove 51.
Some embodiments of the present application further provide a backlight module, which includes a light emitting device 20, a support body 10, and a reflection assembly provided by the foregoing technical solution, where the reflection housing 1 and the light emitting device 20 are both connected to the support body 10, the light emitting device 20 is disposed in the reflection housing 1, and light emitted by the light emitting device 20 can be reflected by the reflection housing 1 and then emitted outwards.
The backlight module comprises the reflection assembly provided by the technical scheme, and the light rays emitted by the backlight module have higher uniformity.
Some embodiments of the present application further provide a display module, where the display module includes the backlight module provided by the foregoing technical solution. The display module comprises the backlight module provided by the technical scheme, so that the display effect of the display module is uniform.
Some embodiments of the present application further provide a display device, where the display device includes the display module provided by the foregoing technical solution. Because the display device comprises the display module provided by the technical scheme, the display effect of the display device is uniform, and the use experience of a user is improved.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application, and are intended to be included within the scope of the appended claims and description. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.
Claims (15)
1. A reflective assembly, comprising: a reflective cover including a body region and a peripheral region, the peripheral region being distributed around the body region, the body region including a plurality of body reflective units distributed in an array, the peripheral region including a plurality of edge reflective units distributed around the body region, the reflective cover including a reflective surface for reflecting light;
the main body reflecting unit comprises a first reflecting cup;
the edge reflection unit comprises second reflection cups and connection parts connected between the adjacent second reflection cups, one side surface of the connection parts, which is away from the reflection surface, is a plane with a preset area S, and the edge reflection unit is fixedly adhered to the support body through the plane;
the first reflecting cup comprises a first reflecting bottom and a first reflecting wall which are connected with each other, a first reflecting space is formed by the first reflecting bottom and the first reflecting wall, a first reflecting surface is formed by the first reflecting bottom and the surface of the first reflecting wall facing the first reflecting space, and the surface of the first reflecting bottom facing the supporting body is used as a first bonding surface with a preset area S1 to be bonded and fixed on the supporting body;
the second reflecting cup comprises a second reflecting bottom and a second reflecting wall which are connected with each other, a second reflecting space is formed by the second reflecting bottom and the second reflecting wall, the second reflecting surface is formed by the second reflecting bottom and the surface of the second reflecting wall facing the second reflecting space, and the surface of the second reflecting bottom facing the supporting body is used as a second bonding surface with a preset area S2 to be bonded and fixed on the supporting body;
and the bonding area m1=xS+yS 2 of the edge reflection unit and the support body, wherein m1/y is larger than or equal to S1, x is the number of planes in the edge reflection unit, and y is the number of second reflection cups in the edge reflection unit.
2. The reflective assembly of claim 1, wherein said edge reflective unit comprises a first sub-unit and a second sub-unit, said first sub-unit being located at four top corners of said reflective assembly, said second sub-unit being arranged in a row or column between two of said first sub-units; the projection area of the first subunit on the support body is twice that of the second subunit on the support body, and the projection area of the second subunit on the support body is twice that of the main body reflection unit on the support body.
3. The reflective assembly of claim 2, wherein said first subunit comprises four of said second reflective cups in an array, said connection being connected between two adjacent of said second reflective cups; the second subunit includes two of the second reflective cups and the connection portion connected between the two of the second reflective cups.
4. The reflection assembly according to claim 1, wherein a compensating reflection surface for reflecting light rays is arranged on a surface of the connecting portion facing the reflection surface, the area of the compensating reflection surface is A1, and the area of the second reflection surface on the second reflection wall is A2, and A1 is larger than or equal to A2/5.
5. The reflective assembly of claim 4 wherein said compensating reflective surface is at an angle B1 to said second reflective surface on said second reflective base and said second reflective surface on said second reflective wall is at an angle B2 to said second reflective surface on said second reflective base of 90 ° to b1=b2 to 120 °.
6. The reflective assembly of claim 1, wherein the first reflective base is provided with a first mounting hole through which the light emitting device extends into the first reflective space; the second reflecting bottom is provided with a second mounting hole, and the light emitting device extends into the second reflecting space through the second mounting hole.
7. The assembly of claim 6, further comprising a frame surrounding the reflector, the frame having a protrusion thereon, the protrusion configured to extend toward the reflector, the protrusion pressing the second reflector cup against the support.
8. The assembly of claim 7, further comprising a reflective sheet for reflecting light, the reflective sheet being attached to a side of the frame remote from the support.
9. The assembly of claim 7, wherein a projection of the protrusion onto the support is separated from a projection of the second mounting hole onto the support.
10. The reflective assembly of claim 1 wherein said body reflector units are connected to adjacent ones of said body reflector units or said edge reflector units by a support, said reflective assembly further comprising a support member connected to said support member, said support member defining a plurality of receiving spaces, said body reflector units and said edge reflector units being disposed in said receiving spaces, said support member being supported by said support member.
11. The assembly of claim 10, wherein the support comprises a plurality of first support plates disposed at intervals and a plurality of second support plates disposed at intervals, the first support plates and the second support plates being connected to each other to define the receiving space.
12. The reflective assembly of claim 11, wherein the support portion is provided with a slot, the slot being disposed corresponding to the first support plate and the second support plate, the first support plate and the second support plate being inserted into the slot.
13. A backlight module comprising a light emitting device, a support and a reflective assembly according to any one of claims 1-12, wherein the reflective housing and the light emitting device are both connected to the support, and the light emitting device is disposed in the reflective housing.
14. A display module comprising the backlight module of claim 13.
15. A display device comprising the display module of claim 14.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210461588.5A CN114859601B (en) | 2022-04-28 | 2022-04-28 | Reflection assembly, backlight module, display module and display device |
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| CN202210461588.5A CN114859601B (en) | 2022-04-28 | 2022-04-28 | Reflection assembly, backlight module, display module and display device |
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| TWI818765B (en) * | 2022-08-29 | 2023-10-11 | 瑞儀光電股份有限公司 | Reflective sheet, backlight module, and display device |
| CN115458666B (en) * | 2022-11-09 | 2023-02-07 | 镭昱光电科技(苏州)有限公司 | Micro LED Micro display chip and manufacturing method thereof |
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