WO2023124486A1 - 背光模组及显示装置 - Google Patents

背光模组及显示装置 Download PDF

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Publication number
WO2023124486A1
WO2023124486A1 PCT/CN2022/128193 CN2022128193W WO2023124486A1 WO 2023124486 A1 WO2023124486 A1 WO 2023124486A1 CN 2022128193 W CN2022128193 W CN 2022128193W WO 2023124486 A1 WO2023124486 A1 WO 2023124486A1
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WO
WIPO (PCT)
Prior art keywords
optical film
elastic support
bottom plate
adsorption
backlight module
Prior art date
Application number
PCT/CN2022/128193
Other languages
English (en)
French (fr)
Inventor
杨晓辉
辛武根
郑浩旋
Original Assignee
绵阳惠科光电科技有限公司
惠科股份有限公司
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Publication date
Application filed by 绵阳惠科光电科技有限公司, 惠科股份有限公司 filed Critical 绵阳惠科光电科技有限公司
Publication of WO2023124486A1 publication Critical patent/WO2023124486A1/zh

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Classifications

    • 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
    • G02F1/133608—Direct backlight including particular frames or supporting means
    • 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
    • G02F1/133603—Direct backlight with LEDs
    • 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
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members

Definitions

  • the disclosure belongs to the field of display technology, and in particular relates to a backlight module and a display device.
  • the backlight module of the liquid crystal display generally adopts a light emitting diode (Light Emitting Diode, LED for short) as a light source.
  • the backlight module can be divided into two types: direct-type and side-type.
  • the direct-type backlight module has attracted the attention of researchers in the industry because of its advantages of small weight, low power consumption and high brightness. .
  • the direct-type backlight module generally includes components such as a plastic frame and an optical film. These components are generally arranged in layers. For example, the optical film is set above the light source, and the plastic frame is set above the optical film. , however, the simple stacking of each component has problems such as poor display effect.
  • the purpose of the present disclosure is to provide a backlight module and a display device to improve the display effect.
  • the present disclosure provides a backlight module, including a base plate, a light source, an optical film and a support structure, the light source is arranged on the base plate, and is opposite to the optical film, and the support structure is set on the Between the bottom plate and the optical film, the support structure includes a chassis and at least two elastic support parts arranged at intervals, the chassis is arranged on the bottom plate, and the elastic support parts are arranged on the chassis away from the One side of the bottom plate, and supports the optical film.
  • the present disclosure also provides a display device, including a display panel and the above-mentioned backlight module, and the display panel is arranged on the light-emitting side of the backlight module.
  • the support structure adopts at least two elastic support parts arranged at intervals, and a deformation accommodation cavity for accommodating the deformation of the elastic support parts is formed between two adjacent elastic support parts; when the optical film is subjected to its own gravity or external force, Collapsing toward the bottom plate, the optical film is in contact with the elastic support part, and the elastic support part deforms and bends toward the deformation accommodation cavity, generating a buffer force opposite to gravity or external force on the optical film to weaken the impact of the optical film on the elastic support part.
  • the extrusion force can prevent the elastic support part from damaging the optical film, thereby ensuring the display effect of the display device.
  • FIG. 1 shows a schematic diagram of an exploded structure of a display device in an embodiment of the present disclosure.
  • FIG. 2 shows a partially enlarged view at point A in FIG. 1 .
  • Fig. 3 shows a schematic structural diagram of a supporting structure in an embodiment of the present disclosure.
  • Fig. 4 shows a structural diagram of a support structure in one direction in an embodiment of the present disclosure.
  • Fig. 5 shows a schematic cross-sectional view of a support structure in an embodiment of the present disclosure.
  • Fig. 6 shows a structural schematic view of the supporting structure in another direction in the embodiment of the present disclosure.
  • Fig. 7 shows a schematic structural view of the positioning part assembled on the bottom plate in the embodiment of the present disclosure.
  • Example embodiments will now be described more fully with reference to the accompanying drawings.
  • Example embodiments may, however, be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concept of example embodiments to those skilled in the art.
  • This disclosure proposes a backlight module, which is applied to a direct-lit liquid crystal display device, which includes a bottom plate 100, a light source 200, and a support structure 300.
  • the light source 200 can use a Mini LED ( Mini Light Emitting Diode, miniature light-emitting diode).
  • the side of the base plate 100 facing the inside of the backlight module is provided with a light source 200 to emit light;
  • Light board in a preferred embodiment, the light emitting source 200 may be a light emitting diode (LED), but not limited thereto.
  • an optical film 400 is provided on the opposite side of the light emitting source 200 , and the optical film 400 can adjust the light emitted by the light emitting source 200 before emitting it.
  • a plurality of supports for supporting the optical film 400 are arranged between the bottom plate 100 and the optical film 400 . supporting structure.
  • a plurality of support structures 300 made of soft elastic materials are provided on the side of the bottom plate 100 close to the optical film 400, so as to protect the optical film 400.
  • the elastic support of the diaphragm 400 provides a buffer force for the optical diaphragm 400 , reducing the problem of the supporting structure 300 scratching the optical diaphragm 400 and reducing the problems of scratching between the supporting structure 300 and the optical diaphragm 400 .
  • the supporting structure 300 when the optical film 400 is subjected to gravity or external force, the supporting structure 300 will be in contact with the optical film 400, and will generate an elastic buffer force on the optical film 400 , can reduce problems such as damage to the optical film 400 by the support structure 300 or scratches with the optical film 400 during the test or transportation of the display device.
  • each support structure 300 is evenly spaced from the light source 200 in the bottom plate 100, and each support structure 300 is perpendicular to the backlight module to better support the optical film 400
  • the supporting structure 300 can be set according to the number of light emitting sources 200, optionally, a supporting structure 300 can be set between two light emitting sources 200, or the support can be fixed at the center of four light emitting sources 200
  • the structure 300 can not only achieve the function of supporting the optical film 400, but also make the arrangement of the supporting structure 300 in the bottom plate 100 uniform, and avoid the problem of shadows, thereby improving the display effect.
  • the supporting structure 300 is made of elastic material to provide an elastic buffer force for the optical film 400, The problem that the support structure 300 and the optical film 400 contact the optical film 400 instantaneously and damage the optical film 400 is reduced.
  • the supporting structure 300 includes a chassis 301 and at least two elastic supporting parts 302 arranged at intervals.
  • the chassis 301 is connected to the Mini LED (Mini Light Emitting Diode, miniature light-emitting diode) light board on the bottom plate 100, so as to fix the support structure 300 on the bottom plate 100, and the elastic support part 302 is arranged on the bottom plate 100 of the chassis 301.
  • One side corresponds to the optical film 400 , that is, the support structure 300 is sandwiched between the bottom plate 100 and the optical film 400 to realize the function of supporting the optical film 400 .
  • the support structure 300 may be made of rubber material, or may be made of elastic silicone material.
  • the elastic support part 302 is manufactured into a sheet structure, as shown in Figure 3 or Figure 6; and the height direction of the elastic support part 302 should be perpendicular to the bottom plate 100 and the optical film 400, to It acts as a support.
  • the support structure 300 includes two elastic support parts 302 arranged at intervals, and the two elastic support parts 302 are parallel to each other, and the two elastic support parts 302 are Each elastic support portion 302 is perpendicular to the chassis 301, and a deformation accommodation chamber 800 for accommodating the deformation of the elastic support portion 302 is formed between the two elastic support portions 302; since the support structure 300 is made of elastic material, when the optical film 400 When affected by its own gravity or external force, it will collapse toward the bottom plate 100, and its optical film 400 first contacts with the tops of the two elastic support parts 302, and the elastic support parts 302 are subjected to the extrusion force, and move toward the deformation accommodation chamber.
  • the elastic support part 302 plays a buffer role on the optical film 400, so as to avoid the rigid connection between the elastic support part 302 and the optical film 400 , thus damaging the optical film 400.
  • the elastic support part 302 is always connected with the optical film 400 to ensure the supporting effect on the optical film 400; in addition, the elastic support part 302 is deformed due to the extrusion force , and the elastic support part 302 is flexibly connected to the optical film 400 to prevent the elastic support part 302 from damaging the optical film 400 .
  • the optical film 400 when the optical film 400 collapses downward due to its own gravity or external force, the optical film 400 is in contact with the tops of the two elastic supporting parts 302 , The top ends of the two elastic supporting parts 302 are gradually bent and deformed towards the deformation accommodation chamber 800.
  • the deformation accommodation chamber 800 provides a buffer space for elastic deformation of the two elastic supporting parts 302.
  • the top of the elastic support part 302 can restore to its original shape by itself, thereby protecting the optical film 400, and the elastic support part 302 will not be deformed by external force, so it is not easy to produce lamp shadows, and the display quality is improved.
  • the elastic support portion 302 has a certain amount of stress and deformation while ensuring sufficient support strength, so as to prevent the elastic support portion 302 from directly making rigid contact with the optical film 400, which may damage the optical film 400, and the elastic support portion 302 and the optical film 400 become flexible connections, which provide elastic buffer force for the optical film 400 to contact with the elastic supporting part 302 instantly, and prevent the elastic supporting part 302 from damaging the optical film 400, thereby ensuring the stability of the display effect.
  • a single elastic support portion 302 can also be used to reduce cost investment, and the number of the elastic support portion 302 is not specifically limited. .
  • each elastic support part 302 are parallel to each other, and form a deformation accommodation cavity 800 with adjacent elastic support parts 302 , providing deformation space, providing elastic buffer force for the optical film 400 , and preventing the elastic support part 302 from damaging the optical film 400 .
  • the elastic support part 302 is provided with at least one deformation through hole 303 , such as Figure 3, Figure 5 and Figure 6.
  • the elastic support part 302 is pressed by the optical film 400, on the one hand, the elastic support part 302 is driven to deform into the deformation accommodation cavity 800, and on the other hand, the elastic support part 302 will gradually squeeze toward the deformation through hole 303, and the deformation will pass through
  • the hole 303 is squeezed and deformed, which provides additional elastic deformation for the elastic support portion 302, and the deformed through hole 303 provides an additional elastic buffer force for the optical film 400, preventing the elastic support portion 302 from damaging the optical film 400, thereby Ensure the display effect of the display panel.
  • a deformation through hole 303 is provided on the elastic support part 302, and the opening direction of the deformation through hole 303 is two elastic
  • the parallel arrangement direction of the supporting parts 302 ensures that the deformed through holes 303 are more deformed and more easily deformed when they are squeezed; it should be understood that a single elastic supporting part 302 is provided with a deformed through hole 303, and each The elastic support parts 302 all correspond to a deformation through hole 303, and the deformation through holes 303 on each elastic support part 302 can be located at the same vertical height or at different vertical heights; optionally, the deformation through holes 303 on the elastic support part 302
  • the holes 303 can adopt the same vertical height, so as to ensure the same elastic deformation capacity of each elastic supporting part 302, and the design is simpler, which reduces the production cost.
  • each elastic support portion 302 are located at the same vertical height, that is, the projections of the deformation through holes 303 on each elastic support portion 302 along the arrangement direction of the elastic support portions 302 coincide with each other.
  • a deformation through hole 303 can be opened at the center of the elastic support part 302 to ensure better deformation ability of the elastic support part 302, or can be opened at any position of the elastic support part 302, and the specific position is not specifically limited.
  • a plurality of deformation through holes 303 may also be opened on the elastic support portion 302 to provide more elastic deformation for the elastic support portion 302 . It should be noted that when multiple deformed through-holes 303 are used, the deformed through-holes 303 can be connected to each other, or can be arranged at intervals without communication; and the area of the deformed through-holes 303 should be smaller than the area of the elastic support part 302 plane .
  • the deformed through hole 303 may adopt one or more of cylindrical, waisted or conical shapes.
  • the deformed through hole 303 adopts a cylindrical structure, as shown in FIG. 3 or FIG. 6 , and the axial direction of the cylindrical deformed through hole 303 is the same as the arrangement or thickness direction of the elastic support part 302, and the cylindrical structure is adopted. It can guarantee to provide stable elastic deformation ability, and also makes the opening method easier.
  • deformation through holes 303 of the same shape and size may be provided in the elastic support portion 302, or the same shape but different sizes may be provided in the elastic support portion 302.
  • the deformation through holes 303 of different shapes can also be opened, and the shape and size of the deformation through holes 303 opened on the elastic support part 302 are not limited.
  • the support structure 300 is made of a transparent material as a whole, that is, the support structure 300 has a transparent layer, so as to avoid generation of light on the display panel. Shadow problem; and in order to avoid refraction and absorption of the light emitted by the light source in the elastic support portion 302 , therefore, along the vertical direction from the bottom plate 100 to the optical film 400 , the width of the elastic support portion 302 gradually decreases.
  • the elastic support part 302 may adopt a smooth arc-shaped structure to ensure the contact stability between the elastic support part 302 and the optical film 400 while ensuring that the width gradually decreases. It is ensured that no scratches occur between the elastic support portion 302 and the optical film 400 to ensure the display effect.
  • the outer contour of the elastic support portion 302 is gradually thinned in thickness from the inner side of the elastic support portion 302 to the outer direction of the elastic support portion 302, forming a trapezoidal structure; adopting this structure is mainly for Refraction and absorption of the light emitted by the light source within the elastic support portion 302 is reduced to reduce the shadow effect and improve the display effect of the display panel.
  • the chassis 301 includes an adsorption portion 3011 and a fixing portion 3012 .
  • the adsorption part 3011 is fixed on the lamp board of the base plate 100, and the side of the adsorption part 3011 away from the base plate 100 is provided with a fixing part 3012, and the adsorption part 3011 and the fixing part 3012 can be integrally formed, or can be welded, riveted or threaded. The way of connection is connected.
  • the adsorption part 3011 and the fixed part 3012 are integrally formed, the structure is simpler and the operation is more convenient; in addition, on the side of the fixed part 3012 away from the adsorption part 3011, the above-mentioned
  • the elastic supporting part 302 is integrally formed with the fixed part 3012 on the side with a larger width.
  • the fixing part 3012 is integrally formed with the adsorption part 3011, and forms a boss structure, as shown in FIG.
  • the fixing part 3012 adopts a circular structure
  • the adsorption part 3011 also adopts a circular structure
  • the diameter of the fixing part 3012 is smaller than that of the adsorption part 3011 .
  • the diameter of the fixing portion 3012 should be greater than or equal to the arrangement distance of the elastic supporting portion 302 , so that the elastic supporting portion 302 can stably support the optical film 400 .
  • the adsorption part 3011 includes an adsorption groove 3011a that is recessed inward, and the groove direction of the adsorption groove 3011a faces the bottom plate 100, and the adsorption groove 3011a can be square, rectangular, or triangular.
  • the adsorption groove 3011a adopts an arc-shaped groove, which is vacuum-adsorbed with the lamp board of the bottom plate 100, and the arc-shaped groove is closely attached to the lamp board, and the adsorption groove 3011a is squeezed
  • the adsorption force between the suction groove 3011a and the lamp panel on the bottom plate 100 should be greater than the gravity of the entire support structure 300, and There will be no slipping and other phenomena due to long-term use, ensuring overall stability; in addition, the use of vacuum adsorption makes the assembly and disassembly of the support structure 300 easier, and the structure of the lamp panel is not easy to be damaged, which further simplifies the assembly process, reducing production costs.
  • the groove width of the adsorption groove 3011a gradually decreases along the vertical direction from the bottom plate 100 to the optical film 400; it should be understood that the arc-shaped adsorption The groove 3011a has stronger adsorption and more reliable sticking.
  • the groove 900 can provide a deformation space for the adsorption part 3011 and the fixed part 3012 when the adsorption part 3011 and the lamp board are vacuum adsorbed, so as to ensure that the surface of the groove 900 of the adsorption groove 3011a is completely attached to the lamp board, ensuring The adsorption stability between the adsorption part 3011 and the lamp board.
  • the opening direction of the groove 900 faces the optical film 400, and the groove 900 is set between the two elastic supporting parts 302; optionally, the groove width of the groove 900 It can be the same as the distance between the two adjacent elastic support parts 302, or it can be smaller than the distance between the two adjacent elastic support parts 302, and it can also be located at the center of the two adjacent elastic support parts 302. The location is not specifically limited.
  • the support structure 300 is made of transparent material, and the support structure 300 needs to be elastic. Therefore, the support structure 300 can be integrally formed with elastic transparent rubber, or can be Made of flexible transparent silicone.
  • Mini LED Mini Light Emitting Diode (miniature light-emitting diode) light boards are relatively complicated to make, and there are many and dense rows of lights, which makes it difficult for the support structure 300 to find a suitable position on the light board for placement, and the support structure 300 can easily block the light emitted by the light source, thereby Optical shadows appear, causing subjective bad problems.
  • a positioning part 101 for positioning the support structure 300 is designed on the lamp panel. As shown in FIG. to fix the supporting structure 300 .
  • the positioning part 101 can use positioning Mark (marking) lines, and the adsorption part 3011 is adsorbed on the positioning Mark (marking) lines, which makes positioning easier and reduces problems such as optical shadows.
  • Embodiment 2 of the present disclosure also provides a display device, which includes a display panel 700 and the backlight module in Embodiment 1, wherein the backlight module further includes a backplane (not shown), a plastic frame 500 and a foam 600 .
  • the base plate 100 is arranged on the back plate.
  • the back plate also includes a main board and side plates perpendicular to the main board.
  • the base plate 100 is arranged on the main board and parallel to the main board.
  • the elastic support structure 300, the plastic frame 500 is set on the side plate, the display panel is set on the plastic frame 500, and the foam 600 is arranged between the display panel and the plastic frame 500.
  • the optical film 400 When the optical film 400 is bent by force, it will The elastic support part 302 on the support structure 300 contacts, and the elastic support part 302 produces an elastic buffer force to it, so as to weaken the reaction force generated by the elastic support part 302 on the optical film 400, and prevent the support structure 300 from damaging the optical film 400. to damage the optical film 400 .
  • first and second are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as “first” and “second” may explicitly or implicitly include one or more of these features.
  • “plurality” means two or more, unless otherwise specifically defined.
  • connection should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical A connection can also be an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be an internal communication between two elements or an interaction relationship between two elements.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Planar Illumination Modules (AREA)
  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

一种背光模组及显示装置，显示装置包括背光模组，背光模组包括底板（100）、发光源（200）、光学膜片（400）及支撑结构（300），发光源（200）设于底板（100）上，并与光学膜片（400）相对，支撑结构（300）设于底板（100）和光学膜片（400）之间，支撑结构（300）包括底盘（301）和至少两个间隔设置的弹性支撑部（302），底盘（301）设于底板（100）上，且弹性支撑部（302）设于底盘（301）远离底板（100）的一侧，并支撑光学膜片（400）。

Description

背光模组及显示装置 技术领域
本申请要求于2021年12月29日提交中国专利局，申请号为CN202111649274.X，申请名称为“背光模组及显示装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
本公开属于显示技术领域，具体涉及一种背光模组及显示装置。
 背景技术
目前，液晶显示装置的背光模组普遍采用发光二极管（Light Emitting Diode，简称：LED）作为发光源。根据发光源的分布位置，背光模组可分为直下式和侧入式两种，其中，直下式背光模组因其重量小、电力消耗小以及高亮度的优势而受到业内研究者的重点关注。
直下式背光模组除发光源外，一般还包括胶框和光学膜片等组件，这些组件一般呈叠层设置，例如，光学膜片设于发光源的上方，胶框设置在光学膜的上方，然而将各个组件进行简单层叠，存在显示效果不佳等问题。
 技术问题
本公开的目的在于提供一种背光模组及显示装置，以提高显示效果。
 技术解决方案
本公开提供了一种背光模组，包括底板、发光源、光学膜片及支撑结构，所述发光源设于所述底板上，并与所述光学膜片相对，所述支撑结构设于所述底板和所述光学膜片之间，所述支撑结构包括底盘和至少两个间隔设置的弹性支撑部，所述底盘设于所述底板上，且所述弹性支撑部设于所述底盘远离所述底板的一侧，并支撑所述光学膜片。
本公开还提供了一种显示装置，包括显示面板和上述的背光模组，显示面板设于所述背光模组的出光侧。
 有益效果
支撑结构通过采用至少两个间隔设置的弹性支撑部，在两个相邻的弹性支撑部之间形成用于容纳弹性支撑部变形的变形容纳腔；在光学膜片受自身重力或外力作用下，朝向底板进行塌陷，光学膜片与弹性支撑部抵接，弹性支撑部向变形容纳腔进行变形弯曲，对光学膜片产生一个与重力或外力相反的缓冲力，以减弱光学膜片对弹性支撑部的挤压力，避免弹性支撑部顶伤光学膜片，从而保证显示装置的显示效果。
本公开的其他特性和优点将通过下面的详细描述变得显然，或部分地通过本公开的实践而习得。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，并不能限制本公开。
 附图说明
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本申请的实施例，并于说明书一起用于解释本申请的原理。
为了使本公开的内容更容易被清楚的理解，下面根据本公开的具体实施例并结合附图，对本公开作进一步详细的说明，其中：
图1示出了本公开实施例中显示装置的爆炸结构示意图。
图2示出了图1中A处的局部放大图。
图3示出了本公开实施例中支撑结构的结构示意图。
图4示出了本公开实施例中支撑结构的一方向上的结构示意图。
图5示出了本公开实施例中支撑结构的剖面示意图。
图6示出了本公开实施例中支撑结构的另一方向上的结构示意图。
图7示出了本公开实施例中定位部装配在底板上的结构示意图。
 本发明的实施方式
现在将参考附图更全面地描述示例实施方式。然而，示例实施方式能够以多种形式实施，且不应被理解为限于在此阐述的范例；相反，提供这些实施方式使得本公开将更加全面和完整，并将示例实施方式的构思全面地传达给本领域的技术人员。
此外，所描述的特征、结构或特性可以以任何合适的方式结合在一个或更多实施例中。在下面的描述中，提供许多具体细节从而给出对本公开的实施例的充分理解。然而，本领域技术人员将意识到，可以实践本公开的技术方案而没有特定细节中的一个或更多，或者可以采用其它的方法、组元、装置、步骤等。在其它情况下，不详细示出或描述公知方法、装置、实现或者操作以避免模糊本公开的各方面。
下面结合附图和具体实施例对本公开作进一步详述。在此需要说明的是，下面所描述的本公开各个实施例中所涉及的技术特征只要彼此之间未构成冲突就可以相互组合。下面通过参考附图描述的实施例是示例性的，旨在用于解释本公开，而不能理解为对本公开的限制。
实施例一
本公开提出了一种背光模组，其应用于直下式液晶显示装置，其包括底板100、发光源200和支撑结构300，可选的，参见图1所示，发光源200可以采用Mini LED（Mini Light Emitting Diode，微型发光二极管）。
其中，如图1或图2所示，底板100朝向背光模组内部的一侧设有发光源200，以发出光线；发光源200均匀排列在底板100上，换言之，发光源200和底板100构成灯板；在较佳的实施例中，发光源200可以采用发光二极管LED（Light Emitting Diode），但不限于此。进一步地，为了提升显示效果，在发光源200相对的一侧设有光学膜片400，该光学膜片400可以将发光源200所发出的光进行调整后射出。
进一步地，参见图1和图2所示，为了限制光学膜片400受自身重力或外力的作用下进行塌陷，在底板100和光学膜片400之间设置多个用于支撑光学膜片400的支撑结构。
更进一步地，为了解决对光学膜片400顶伤和刮擦等问题，则在底板100靠近光学膜片400的一侧设有多个具有柔软的弹性材料制成的支撑结构300，以对光学膜片400进行弹性支撑，为光学膜片400提供一个缓冲作用力，降低支撑结构300顶伤光学膜片400的问题，以及降低支撑结构300与光学膜片400之间发生刮擦等问题。
应当理解的是，采用具有弹性的支撑结构300之后，在光学膜片400受重力或外力作用下，支撑结构300会与光学膜片400相接触，并会对光学膜片400产生一个弹性缓冲力，可以降低在显示装置试验或运输过程中，支撑结构300顶伤光学膜片400或与光学膜片400发生刮擦等问题。
进一步的，参见图1或图2所示，各个支撑结构300均与底板100中的发光源200间隔均匀排布，且各个支撑结构300均垂直于背光模组，以更好地支撑光学膜片400，该支撑结构300可以根据发光源200的个数进行设置，可选的，可以在两个发光源200之间设置一个支撑结构300，也可以在四个发光源200的中心位置固定该支撑结构300，这样既能达到支撑光学膜片400的作用，也能使得在支撑结构300在底板100中的排布均匀，且避免产生暗影的问题，进而提升显示效果。
具体地，为了避免支撑结构300顶伤光学膜片400，以及损伤光学膜片400，影响显示效果等问题，支撑结构300采用由弹性材料制成，以对光学膜片400提供一个弹性缓冲力，减少支撑结构300与光学膜片400瞬间抵接损坏光学膜片400的问题。
其中，参见图3、图4、图5或图6所示，支撑结构300包括有底盘301和至少两个间隔设置的弹性支撑部302。其中，底盘301与底板100上的Mini LED（Mini Light Emitting Diode，微型发光二极管）灯板相连，以用于将支撑结构300固定在底板100上，弹性支撑部302设在底盘301远离底板100的一侧，并与光学膜片400相对应，即将支撑结构300夹设在底板100和光学膜片400之间，以实现支撑光学膜片400的作用。
进一步地，弹性支撑部302的顶端与光学膜片400之间留有间隙，一方面保证光学膜片400有一定的变形空间；另一方面避免弹性支撑部302与光学膜片400之间直接接触，造成对光学膜片400的顶伤或弹性支撑部302与光学膜片400之间发生刮擦，保证显示装置的显示效果。
此外，为了支撑结构300具有弹性变形能力，可选的，支撑结构300可以采用橡胶材料制成，也可以采用弹性硅胶材料制成。并且，为了便于变形和支撑，将弹性支撑部302制造成片状结构，如图3或图6所示；且该弹性支撑部302的高度方向应垂直于底板100和光学膜片400，以对其进行支撑作用。
一种可选的实施方式，参见图3、图4、图5或图6所示，支撑结构300包括两个间隔设置的弹性支撑部302，两个弹性支撑部302之间相互平行，且两个弹性支撑部302均垂直于该底盘301，在两个弹性支撑部302之间形成有容纳弹性支撑部302变形的变形容纳腔800；由于支撑结构300采用弹性材料制成，当光学膜片400受自身重力或外力的影响时，会向底板100方向塌陷，其光学膜片400首先与两个弹性支撑部302的顶部相接触，弹性支撑部302受挤压力的作用，而向变形容纳腔800进行弯曲变形，以减小光学膜片400对弹性支撑部302的挤压力，也即弹性支撑部302对光学膜片400起到缓冲作用，避免弹性支撑部302与光学膜片400刚性连接，从而顶伤光学膜片400的问题。
需要说明的是，在此过程中，弹性支撑部302始终与光学膜片400相连，以保证对光学膜片400的支撑作用；此外，弹性支撑部302因为受挤压力的作用，而产生变形，且弹性支撑部302与光学膜片400柔性连接，避免弹性支撑部302顶伤光学膜片400。
应当理解的是，参见图4或图5所示，当光学膜片400因受自身重力或外力的作用下而向下塌陷时，光学膜片400与两个弹性支撑部302的顶部相接触，两个弹性支撑部302的顶端逐渐朝向变形容纳腔800内进行弯曲变形，变形容纳腔800为两个弹性支撑部302提供了一弹性形变的缓冲空间，当光学膜片400不受重力作用时，弹性支撑部302的顶端能够自行恢复原状，从而保护了光学膜片400，且弹性支撑部302不会因外力发生形变，因此不易产生灯影，提高了显示品质。
此外，弹性支撑部302在保证足够的支撑强度的同时，又有一定的受力变形量，避免弹性支撑部302直接与光学膜片400进行刚性接触，顶伤光学膜片400，将弹性支撑部302与光学膜片400变为柔性连接，为光学膜片400瞬间与弹性支撑部302接触提供弹性缓冲力，避免弹性支撑部302顶伤光学膜片400，进而保证显示效果的稳定性。
另一种可选的实施方式，在保证弹性支撑部302支撑光学膜片400的作用下，也可以采用单个弹性支撑部302，减少成本的投入，其弹性支撑部302的个数不做具体限定。
当然，采用两个以上的弹性支撑部302能够更好地保证弹性支撑部302支撑光学膜片400，提供更好的弹性缓冲力，避免顶伤光学膜片400；且每个弹性支撑部302均相互平行，并与相邻的弹性支撑部302形成变形容纳腔800，提供变形空间，为光学膜片400提供弹性缓冲力，避免弹性支撑部302顶伤光学膜片400。
进一步地，参见图3、图5或图6所示，弹性支撑部302为了更好地提供弹性变形，且保证一定的支撑强度，在弹性支撑部302上开设有至少一个变形通孔303，如图3、图5和图6所示。弹性支撑部302受光学膜片400的挤压力，一方面驱使弹性支撑部302向变形容纳腔800内部进行变形，另一方面弹性支撑部302会逐渐向变形通孔303进行挤压，变形通孔303受挤压而产生变形，为弹性支撑部302提供额外的弹性变形量，变形通孔303为光学膜片400提供额外的弹性缓冲力，避免弹性支撑部302顶伤光学膜片400，进而保证显示面板的显示效果。
一种实施例，参见图1、图2、图3、图5或图6所示，在弹性支撑部302上开设有一个变形通孔303，且变形通孔303的开孔方向为两个弹性支撑部302的平行排布方向，进而保证变形通孔303受挤压时而产生变形量更大，更易变形；应当理解的是，单个弹性支撑部302上设有一个变形通孔303，且每个弹性支撑部302均对应一个变形通孔303，每个弹性支撑部302上的变形通孔303可以位于同一垂直高度，也可以处于不同的垂直高度；可选的，弹性支撑部302上的变形通孔303可以采用同一垂直高度，保证各弹性支撑部302的弹性形变能力相同，且设计更加简单，降低生产成本。
需要说明的是，各弹性支撑部302上的变形通孔303位于同一垂直高度，也即各弹性支撑部302上的变形通孔303沿弹性支撑部302排列方向上的投影相互重合。
此外，一个变形通孔303可以开设在弹性支撑部302的中心位置处，保证弹性支撑部302的形变能力更好，也可以开设在弹性支撑部302的任意位置上，具体位置不做具体限定。
另一种实施例，在弹性支撑部302上也可开设多个变形通孔303，为弹性支撑部302提供更多的弹性形变量。需要说明的是，当采用多个变形通孔303时，该变形通孔303之间可以相互连通，也可以间隔设置不连通；且开设变形通孔303的面积应小于弹性支撑部302平面的面积。
进一步地，变形通孔303可以采用圆柱形、腰形或圆锥形中的一种或多种。可选的，变形通孔303采用圆柱形结构，参见图3或图6所示，且圆柱形的变形通孔303轴线方向与弹性支撑部302的排布或厚度方向相同，采用圆柱形结构即能够保证提供稳定的弹性变形能力，也使得开孔方式更为简单。
需要说明的是，当一个弹性支撑部302对应多个变形通孔303时，可以在弹性支撑部302开设相同形状大小的变形通孔303，也可以在弹性支撑部302开设相同形状，但大小不同的变形通孔303，还可以开设不同形状的变形通孔303，具体弹性支撑部302上开设的变形通孔303形状和大小不做限定。
进一步地，为了避免弹性支撑部302吸收底板100上发光源200所发出的光，因此，将该支撑结构300整体采用透明材质制成，也即支撑结构300具有透明层，避免在显示面板上产生暗影的问题；且为了避免发光源所发出光在弹性支撑部302内折射吸收，因此，沿底板100至光学膜片400的垂直方向上，弹性支撑部302的宽度逐渐减小。
可选的，参见图3或图6所示，弹性支撑部302可以采用流畅的圆弧形结构，在保证宽度逐渐减小的同时，保证弹性支撑部302与光学膜片400的接触稳定性，保证弹性支撑部302不与光学膜片400之间发生刮擦，以保证显示效果。
具体地，参见图3所示，弹性支撑部302的外轮廓，其厚度从弹性支撑部302的内侧至弹性支撑部302的外侧方向逐渐减薄，形成梯形结构；采用此种结构，主要是为了减少发光源所发出的光在弹性支撑部302内部发生折射吸收，减少暗影效果，以提高显示面板的显示效果。
进一步地，参见图3、图4或图5所示，底盘301包括吸附部3011和固定部3012。其中，吸附部3011固定在底板100的灯板上，而吸附部3011远离底板100的一侧设有固定部3012，其吸附部3011与固定部3012可一体成型，也可通过焊接、铆接或螺纹连接的方式进行连接，可选的，吸附部3011与固定部3012采用一体成型，其结构更为简单，操作也更加方便；此外，在固定部3012远离吸附部3011的一侧，垂直固定有上述弹性支撑部302，其宽度较大的一侧与固定部3012一体成型。
具体地，该固定部3012与吸附部3011一体成型，并形成凸台结构，如图4所示，也即固定部3012设在吸附部3011的上端，且固定部3012小于吸附部3011的大小。示例地，参见图3或图6所示，该固定部3012采用圆形结构，吸附部3011也采用圆形结构，其固定部3012的直径小于吸附部3011的直径。应当理解的是，该固定部3012的直径应该大于或等于弹性支撑部302的排布距离，以此弹性支撑部302才能稳定的支撑光学膜片400。
进一步地，如图5或图6所示，吸附部3011包括向内部凹陷的吸附凹槽3011a，吸附凹槽3011a的开槽方向朝向底板100，且该吸附凹槽3011a可以为方形、矩形、三角形或圆弧形凹槽；可选的，吸附凹槽3011a采用圆弧形凹槽，与底板100的灯板进行真空吸附，圆弧形凹槽与灯板紧密贴合，挤压吸附凹槽3011a内的多余空气，实现吸附部3011与底板100上的灯板真空吸附；应当理解的是，吸附凹槽3011a与底板100上的灯板真空吸附的吸附力应大于整个支撑结构300的重力，且不会因为长时间的使用，而发生滑落等现象，保证整体的稳定性；此外，采用真空吸附的方式，使得组装和拆卸支撑结构300的方式更为简单，不易损坏灯板结构，进一步简化了组装过程，降低了生产成本。
需要说明的是，当采用圆弧形凹槽时，该吸附凹槽3011a的槽宽沿底板100至光学膜片400的垂直方向上，逐渐减小；应当理解的是，采用圆弧形的吸附凹槽3011a吸附性更强，粘贴更加牢靠。
进一步地，如图5所示，为了保证吸附凹槽3011a的圆弧形凹槽面与底板100上的灯板真空吸附贴合相连，在固定部3012和吸附部3011的连接部开设有一凹槽900，该凹槽900可以在吸附部3011与灯板真空吸附时，为吸附部3011和固定部3012提供一变形空间，以保证吸附凹槽3011a的凹槽900面与灯板完全贴合，保证吸附部3011与灯板的吸附稳定性。
具体地，如图5所示，该凹槽900的开口方向朝向光学膜片400，并且该凹槽900开设在两个弹性支撑部302之间；可选的，该凹槽900的开槽宽度可与两个相邻弹性支撑部302之间相距的距离相同，也可小于两个相邻弹性支撑部302之间相距的距离，还可以位于两个相邻弹性支撑部302的中心位置，其位置不做具体限定。
进一步地，为了避免支撑结构300的遮光效果，支撑结构300采用透明的材质制成，并且还需要满足支撑结构300具备弹性的作用，因此，该支撑结构300可以采用弹性透明橡胶一体成型，也可以采用弹性透明硅胶一体成型。
此外，由于Mini LED（Mini Light Emitting Diode，微型发光二极管）灯板制作比较复杂，排灯多且密，导致支撑结构300很难在灯板上找到合适的位置进行放置，并且支撑结构300很容易遮挡发光源发出的光，从而出现光学暗影，造成主观的不良的问题。
基于此，为了解决上述问题，在灯板上设计供支撑结构300定位的定位部101，如图7所示，支撑结构300中的吸附部3011与定位部101相对应，并通过真空吸附以此来固定支撑结构300。
可选的，如图7所示，该定位部101可以采用定位Mark（标记）线，吸附部3011吸附在定位Mark（标记）线处，定位更加简单，且减少了出现光学暗影等问题。
实施例二
本公开实施例二还提供了一种显示装置，其包括显示面板700和实施例一中的背光模组，其中，背光模组还包括背板（图未示）、胶框500和泡棉600。其中，底板100设在背板上，通常来说，背板还包括主板和与主板垂直的侧板，底板100设置在主板上并与主板平行，底板100和光学膜片400之间设有具有弹性的支撑结构300，胶框500设在侧板上，显示面板设在胶框500上，显示面板与胶框500之间设有泡棉600，当光学膜片400受力弯曲时，其与支撑结构300上的弹性支撑部302接触，弹性支撑部302对其产生一个弹性缓冲力，以减弱弹性支撑部302对光学膜片400产生的反作用力，避免支撑结构300顶伤光学膜片400，以损坏光学膜片400。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本公开的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
在本公开中，除非另有明确的规定和限定，术语“装配”、“连接”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本公开中的具体含义。
在本说明书的描述中，参考术语 “一些实施例”、“示例地”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本公开的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
尽管上面已经示出和描述了本公开的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本公开的限制，本领域的普通技术人员在本公开的范围内可以对上述实施例进行变化、修改、替换和变型，故但凡依本公开的权利要求和说明书所做的变化或修饰，皆应属于本公开专利涵盖的范围之内。

Claims (20)

  1. 一种背光模组，包括底板、发光源、光学膜片及支撑结构，所述发光源设于所述底板上，并与所述光学膜片相对，其特征在于，所述支撑结构设于所述底板和所述光学膜片之间，所述支撑结构包括底盘和至少两个间隔设置的弹性支撑部，所述底盘设于所述底板上，且所述弹性支撑部设于所述底盘远离所述底板的一侧，并支撑所述光学膜片。
  2. 根据权利要求1所述的背光模组，其特征在于，所述弹性支撑部上开设有至少一个变形通孔：
    其中，在所述至少两个间隔设置的弹性支撑部的排布方向上，所述变形通孔沿所述弹性支撑部的排布方向贯穿所述弹性支撑部。
  3. 根据权利要求2所述的背光模组，其特征在于，相邻所述弹性支撑部相互平行；其中，
    在所述至少两个间隔设置的弹性支撑部的排布方向上，各所述弹性支撑部的所述变形通孔的投影相重合。
  4. 根据权利要求1所述的背光模组，其特征在于，沿所述底板至所述光学膜片的垂直方向上，所述弹性支撑部的宽度逐渐减小。
  5. 根据权利要求1所述的背光模组，其特征在于，所述底盘包括吸附部和固定部，所述固定部设于所述吸附部与所述弹性支撑部之间；
    所述吸附部包括向远离所述底板方向凹陷的吸附凹槽，所述吸附凹槽与所述底板吸附相连。
  6. 根据权利要求5所述的背光模组，其特征在于，沿所述底板至所述光学膜片的垂直方向上，所述吸附凹槽的槽宽逐渐减小。
  7. 根据权利要求5所述的背光模组，其特征在于，沿所述底板至所述光学膜片的垂直方向上，所述固定部远离所述吸附部的一侧设有凹槽，所述凹槽的位于相邻所述弹性支撑部之间。
  8. 根据权利要求1所述的背光模组，其特征在于，所述支撑结构为透明结构。
  9. 根据权利要求2所述的背光模组，其特征在于，所述变形通孔为圆柱形、腰形或圆锥形中的一种或多种；和/或
    所述底板靠近所述光学膜片的一侧设有定位部，所述底盘吸附在所述定位部上。
  10. 一种显示装置，其特征在于，包括显示面板和背光模组，所述显示面板设于所述背光模组的出光侧，所述背光模组包括底板、发光源、光学膜片及支撑结构，所述发光源设于所述底板上，并与所述光学膜片相对，其特征在于，所述支撑结构设于所述底板和所述光学膜片之间，所述支撑结构包括底盘和至少两个间隔设置的弹性支撑部，所述底盘设于所述底板上，且所述弹性支撑部设于所述底盘远离所述底板的一侧，并支撑所述光学膜片。
  11. 根据权利要求10所述的显示装置，其特征在于，所述弹性支撑部上开设有至少一个变形通孔：
    其中，在所述至少两个间隔设置的弹性支撑部的排布方向上，所述变形通孔沿所述弹性支撑部的排布方向贯穿所述弹性支撑部。
  12. 根据权利要求11所述的显示装置，其特征在于，相邻所述弹性支撑部相互平行；其中，
    在所述至少两个间隔设置的弹性支撑部的排布方向上，各所述弹性支撑部的所述变形通孔的投影相重合。
  13. 根据权利要求10所述的显示装置，其特征在于，沿所述底板至所述光学膜片的垂直方向上，所述弹性支撑部的宽度逐渐减小。
  14. 根据权利要求10所述的显示装置，其特征在于，所述底盘包括吸附部和固定部，所述固定部设于所述吸附部与所述弹性支撑部之间；
    所述吸附部包括向远离所述底板方向凹陷的吸附凹槽，所述吸附凹槽与所述底板吸附相连。
  15. 根据权利要求14所述的显示装置，其特征在于，沿所述底板至所述光学膜片的垂直方向上，所述吸附凹槽的槽宽逐渐减小。
  16. 根据权利要求14所述的显示装置，其特征在于，沿所述底板至所述光学膜片的垂直方向上，所述固定部远离所述吸附部的一侧设有凹槽，所述凹槽的位于相邻所述弹性支撑部之间。
  17. 根据权利要求10所述的显示装置，其特征在于，所述支撑结构为透明结构。
  18. 根据权利要求11所述的显示装置，其特征在于，所述变形通孔为圆柱形、腰形或圆锥形中的一种或多种。
  19. 根据权利要求11所述的显示装置，其特征在于，所述底板靠近所述光学膜片的一侧设有定位部，所述底盘吸附在所述定位部上。
  20. 根据权利要求11所述的显示装置，其特征在于，还包括胶框和泡棉，所述显示面板设在胶框上，所述泡棉设于所述显示面板与胶框之间。
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