WO2015096435A1 - 背光源和显示装置 - Google Patents

背光源和显示装置 Download PDF

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Publication number
WO2015096435A1
WO2015096435A1 PCT/CN2014/080906 CN2014080906W WO2015096435A1 WO 2015096435 A1 WO2015096435 A1 WO 2015096435A1 CN 2014080906 W CN2014080906 W CN 2014080906W WO 2015096435 A1 WO2015096435 A1 WO 2015096435A1
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WO
WIPO (PCT)
Prior art keywords
backlight
light source
diffusion plate
plate
support
Prior art date
Application number
PCT/CN2014/080906
Other languages
English (en)
French (fr)
Inventor
孙文佳
张宇
尹大根
马青
马文文
Original Assignee
京东方科技集团股份有限公司
北京京东方显示技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 京东方科技集团股份有限公司, 北京京东方显示技术有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US14/408,713 priority Critical patent/US9651823B2/en
Publication of WO2015096435A1 publication Critical patent/WO2015096435A1/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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • 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
    • 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
    • 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
    • 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
    • G02F1/133614—Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light

Definitions

  • Embodiments of the present disclosure relate to a backlight and a display device. Background technique
  • the liquid crystal display device is mainly composed of a display panel and a backlight.
  • the display panel is usually placed above the backlight.
  • the light sources in the common backlights are set in direct type and side-in type.
  • a direct type backlight is disposed.
  • the light source 2 is disposed on the back plate 1 , and the light emitted by the light source 2 directly illuminates the display panel 6 above the backlight.
  • a diffuser plate 3 is generally disposed between the light source 2 of the backlight and the display panel 6 for mixing and diffusing the light emitted from the light source 2 so that the light emitted from the light source 2 is more uniformly illuminated to the display panel 6.
  • the central region of the display panel 6 is sunken by its own gravity, resulting in a high circumference and a low curvature in the middle. , the image screen shows the product shield.
  • the conventional solution is to provide a support between the back plate and the diffuser plate, but the support needs to be perforated in the back plate and fastened by snaps or screws, which greatly reduces the assembly efficiency of the backlight.
  • contact shadows appear at the contact points of the support and the diffuser, and the image quality is displayed.
  • An embodiment of the present disclosure provides a backlight, including a back plate, a light source, and a diffusion plate, wherein the light source is disposed on a surface of the back plate, and the diffusion plate and the plate surface of the back plate are parallel to each other, and The diffusion plate is disposed on a side of the back plate where the light source is disposed, and is opposite to the light source.
  • a support column is further disposed between the diffusion plate and the back plate, and the support column and the support column are The diffusion plate is formed of the same material and integrally formed.
  • Another embodiment of the present disclosure further provides a display device including a display panel and the backlight, wherein the display panel is disposed above the backlight.
  • FIG. 1 is a schematic structural view of a backlight in the related art
  • FIG. 2 is a schematic structural view of a backlight according to a first embodiment of the present disclosure
  • FIG. 3 is a schematic structural view of a backlight according to a second embodiment of the present disclosure.
  • FIG. 4 is a schematic structural view of a backlight according to a third embodiment of the present disclosure. detailed description
  • embodiments of the present disclosure provide a backlight and a display device.
  • the backlight is integrally formed by using the same material as the diffusion plate and the diffusion plate, which not only greatly improves the assembly efficiency of the backlight but also improves the picture quality.
  • the embodiment provides a backlight, as shown in FIG. 2, including a backing plate 1, a light source 2, and a diffusing plate 3.
  • the light source 2 is disposed on the surface of the backing plate 1, and the surfaces of the diffusing plate 3 and the backing plate 1 are mutually Parallelly
  • the diffuser plate 3 is disposed on a side of the back plate 1 on which the light source 2 is disposed, and is opposed to the light source 2, and a support post 31 is further disposed between the diffuser plate 3 and the back plate 1.
  • the support post 31 and the diffusion plate 3 can be formed integrally, for example, by using the same material.
  • the support post 31 and the diffuser plate 3 are integrally formed, for example, by injection molding, and the support post 31 extends in a direction perpendicular to the diffuser plate 3 to the plate surface on which the light source 2 is disposed on the back plate 1.
  • the shape of the back sheet 1 may have, for example, an inverted trapezoidal cross-sectional shape.
  • the diffusion plate 3 integrally formed with the support post 31 can be directly placed on the back plate 1 without additionally fixing the support post 31 and the diffusion plate 3. It is very convenient to assemble.
  • the backlight of the embodiment includes a plurality of light sources 2 and a plurality of support columns 31.
  • the plurality of light sources 2 are uniformly and equally spaced; since the plurality of support columns 31 are integrally formed with the diffusion plate 3, the ends of the plurality of support columns 31 connected to the diffusion plate 3 are fixed ends, and the fixed ends of the support columns 31 and the fixed ends The opposite end is the free end.
  • the free ends of the plurality of support columns 31 respectively fall into the spaced regions between the plurality of light sources 2 of the backplane 1.
  • the arrangement is such that the free end of the support post 31 and the light source 2 can be respectively located at different positions of the backboard 1 without mutual obstruction or interference.
  • the display panel 6 is disposed above the backlight, and the support pillar 31 is sufficient to support the entire display panel 6 while avoiding the display panel 6 being sunk toward the backlight due to insufficient local support, so the number of the support pillars 31 is According to the size of the display panel 6, if the size of the display panel 6 is large, it is necessary to provide a plurality of support columns 31; if the size of the display panel 6 is small, few support columns 31 are provided, as long as it is sufficient The entire display panel 6 is supported, and the display panel 6 is prevented from being partially sunk. For example, a 55inch straight type product requires 8 support columns.
  • the plurality of support columns 31 are identical in shape and evenly spaced apart, and the orthographic projection of the support columns 31 on the backing plate 1 falls into the spaced regions of the light source 2.
  • the display panel disposed above the backlight can be prevented from being partially sunken, and the directly above the light source 2 is not blocked by the support pillar 31, so that most of the light emitted by the light source 2 can directly illuminate the diffuser panel 3.
  • the area other than the support post 31 only a small portion of the light is irradiated onto the support post 31, and after passing through the support post 31, it is irradiated to the region of the diffuser plate 3 corresponding to the support post 31.
  • the shape of the support post 31 includes various columnar structures such as an inverted truncated cone shape, a cylindrical shape, and an inverted pyramid shape.
  • the inverted truncated cone-shaped and chamfered frustum-shaped support post 31 referred to herein means that the cross-sectional area of the fixed end of the support post 31 is larger than the cross-sectional area of the free end thereof.
  • the support post 31 thus shaped can make the connection between the support post 31 and the diffuser panel 3 stronger.
  • the height of the support post 31 is such that the light emitted from the diffuser 3 to the light source 2 is uniformly mixed and diffused.
  • the height of the support post 31 is set according to the density of the light source 2 on the back panel 1 and the light-emitting property of the light source 2, and finally it is ensured that the diffuser 3 can uniformly mix and diffuse the light emitted from the light source 2.
  • the diameter of the free end of the support post 31 and the surface of the back sheet 1 on which the light source 2 is placed is in the range of 1.5 - 2.5 mm. The diameter is smaller than the distance between adjacent two light sources 2. Thereby, the free end of the support post 31 falls into the spaced area of the light source 2 of the backboard 1.
  • the support post 31 and the diffuser plate 3 are formed, for example, of polycarbonate PC, styrene copolymer MS or polystyrene PS material. These materials have a uniform mixing and diffusion of the light emitted by the light source 2 Performance.
  • an optical film 5 for optically reflecting the light transmitted through the diffusion plate 3 may be disposed above the diffusion plate 3.
  • the optical film 5 generally includes some light diffusion sheets, prism sheets, and the like, and the optical film 5 can further diffuse and diffuse the light transmitted through the diffusion plate 3, so that the light emitted by the light source 2 is more uniformly irradiated to the display panel. 6, can also improve the utilization of light. Further improve the picture quality.
  • Second embodiment
  • the present embodiment provides a backlight.
  • the backlight may have substantially the same configuration as the backlight provided by the first embodiment except for the luminescent particles 4. Therefore, repeated description of the same components will be omitted herein, and the same terms and the same reference numerals will be used to refer to the same parts.
  • the luminescent particles 4 are further added to the material forming the support post 31, and the luminescent particles 4 are irradiated with the light source 2 to emit light.
  • the luminescent particles 4 may be a rare earth element lanthanum or cerium. These materials adhere to the anti-Stokes effect, that is, under the illumination of the light source 2, after the illuminating center of these materials absorbs two or more photons, the illuminating energy level is reached after the radiation-free relaxation, and the energy level transitions to the ground state. A photon can be emitted.
  • a small portion of the light is incident on the support column 31 and propagates or supports the column therein.
  • the absorption or reflection of 31 may cause a difference in luminance between the region of the diffusion plate 3 where the support column 31 is disposed and the region where the support column 31 is not provided.
  • the support post 31 itself becomes a light-emitting source, so that the support plate 31 provided with the support post 31 of the diffuser plate 3 can be reduced or eliminated.
  • the difference in brightness between the area and the area where the support column 31 is not provided improves the picture quality.
  • the present embodiment provides a backlight.
  • the backlight may have substantially the same configuration as the backlight provided by the second embodiment except for the reflective sheet 7. Therefore, repeated description of the same components will be omitted herein, and the same reference numerals will be used to refer to the same components.
  • a reflection sheet 7 is further disposed between the back plate 1 and the diffusion plate 3, and the reflection sheet 7 is provided with a through hole in a region corresponding to the light source 2, and the light emitted by the light source 2 is transmitted through the through hole. Diffusion sheet 3. The free end of the support post 31 is in contact with the reflective sheet 7.
  • the reflection sheet 7 is disposed, for example, in close contact with the back sheet 1, and the reflection sheet 7 is disposed so that the light emitted from the light source 2 and irradiated onto the back sheet 1 is reflected by the reflection sheet 7 to the diffusion sheet 3, thereby improving the utilization of light. Thereby further improving the picture quality.
  • the backlights of the first to third embodiments have the following advantageous effects: by integrally forming the support post and the diffusion plate with the same material, it is only necessary to place the integrated diffusion plate and the support post on the back plate during assembly. That is, the support column is not separately fixed to the diffusion plate, thereby greatly improving the assembly efficiency of the backlight; in addition, the integrally formed support column and the diffusion plate prevent contact shadows between the support column and the diffusion plate, thereby enhancing the Picture quality.
  • the present embodiment provides a display device including a display panel, and further includes a backlight of any one of the first to third embodiments, the display panel being disposed above the backlight.
  • the display device improves the assembly efficiency by using the backlight of any of the first to third embodiments, and improves the picture display quality.
  • the display device can be: a liquid crystal panel, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigation device, and the like, or any display product or component.
  • a backlight comprising a back plate, a light source, and a diffusion plate, wherein the light source is disposed on a surface of the back plate, the diffusion plate and the plate surface of the back plate are parallel to each other, and the diffusion The plate is disposed on a side of the back plate where the light source is disposed, and is opposite to the light source.
  • a support column is further disposed between the diffusion plate and the back plate, and the support column and the diffusion plate are disposed. It is formed of the same material and integrally molded.
  • the backlight according to (2) comprising a plurality of the light sources and a plurality of the support columns, wherein the plurality of the light sources are hooked and equally spaced, and the free ends of the plurality of support columns are respectively Falling into the spaced regions of the light source.
  • the light is optically processed.
  • a display device comprising a display panel and the backlight according to any one of (1) to (11), wherein the display panel is disposed above the backlight.

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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)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Planar Illumination Modules (AREA)
  • Liquid Crystal (AREA)

Abstract

一种背光源和显示装置。该背光源包括背板（1）、光源（2）和扩散板（3）。所述光源（2）设置在所述背板（1）的板面上，所述扩散板（3）与所述背板（1）的板面相互平行，且所述扩散板（3）设置在所述背板（1）设置有所述光源（2）的一侧、并与所述光源（2）相对，所述扩散板（3）与所述背板（1）之间还设置有支撑柱（31），所述支撑柱（31）与所述扩散板（1）采用相同的材料、且一体成型形成。

Description

背光源和显示装置 技术领域
本公开的实施例涉及背光源和显示装置。 背景技术
液晶显示装置主要由显示面板和背光源组成。 显示面板通常设置在背光 源上方。 常见的背光源中光源的设置方式有直下式和侧入式两种。
如图 1所示为一种直下式背光源， 光源 2设置在背板 1上， 光源 2发出 的光直接照射到背光源上方的显示面板 6上。 通常会在背光源的光源 2与显 示面板 6之间设置扩散板 3 , 用于将光源 2发出的光进行混合扩散， 以使光 源 2发出的光更加均匀地照射到显示面板 6。 目前， 针对大尺寸显示面板的 直下式背光源， 由于尺寸较大， 在背光源上方设置显示面板 6之后， 显示面 板 6中心区域在自身重力的作用下会下陷， 造成四周高， 中间低的弧度， 影 像画面显示品盾。
传统的解决办法是在背板与扩散板之间设置支撑物， 但支撑物需要在背 板上打孔并用卡扣或螺丝固定， 大大降低了背光源的组装效率。 另外， 在支 撑物与扩散板接触位置会出现接触阴影， 影像画面显示品质。 发明内容
本公开的实施例提供一种背光源， 包括背板、 光源和扩散板， 所述光源 设置在所述背板的板面上， 所述扩散板与所述背板的板面相互平行， 且所述 扩散板设置在所述背板设置有所述光源的一侧、 并与所述光源相对， 所述扩 散板与所述背板之间还设置有支撑柱， 所述支撑柱与所述扩散板釆用相同的 材料、 且一体成型形成。
本公开的另一实施例还一种显示装置， 包括显示面板和上述背光源， 所 述显示面板设置于所述背光源的上方。 附图说明 为了更清楚地说明本公开实施例的技术方案， 下面将对实施例或相关技 术描述中所需要使用的附图作简单地介绍， 显而易见地， 下面描述中的附图 仅仅涉及本公开的一些实施例， 并非对本公开的限制。
图 1为相关技术中一种背光源的结构示意图；
图 2为本公开第一实施例的背光源的结构示意图；
图 3为本公开第二实施例的背光源的结构示意图；
图 4为本公开第三实施例的背光源的结构示意图。 具体实施方式
下面将结合附图，对本公开实施例中的技术方案进行清楚、完整地描述， 显然， 所描述的实施例仅仅是本公开一部分实施例， 而不是全部的实施例。 基于本公开中的实施例， 本领域普通技术人员在没有做出创造性劳动前提下 所获得的所有其他实施例， 都属于本公开保护的范围。
针对上述存在的技术问题， 本公开的实施例提供了一种背光源和显示装 置。 该背光源通过使支撑柱与扩散板釆用相同的材料一体成型形成， 不仅大 大提高了背光源的组装效率， 而且提升了画面质量。 第一实施例：
本实施例提供一种背光源，如图 2所示，包括背板 1、光源 2和扩散板 3 , 光源 2设置在背板 1的板面上， 扩散板 3与背板 1的板面相互平行， 且扩散 板 3设置在背板 1设置有光源 2的一侧、 并与光源 2相对， 扩散板 3与背板 1之间还设置有支撑柱 31。 支撑柱 31与扩散板 3例如可以釆用相同的材料、 且一体成型形成。
支撑柱 31与扩散板 3例如通过注塑形成为一体， 支撑柱 31沿垂直于扩 散板 3的方向延伸至背板 1设置有光源 2的板面。 如图 1所示， 背板 1的形 状例如可以具有倒梯形的截面形状。组装时，可以将与支撑柱 31为形成为一 体的扩散板 3直接放置到背板 1上，而无需对支撑柱 31和扩散板 3进行另外 固定。 组装起来很方便。 另外， 支撑柱 31与扩散板 3—体注塑成型， 相对于 支撑柱 31独立设置且与扩散板 3需另外进行连接接触的情况， 支撑柱 31与 扩散板 3之间不会出现接触阴影， 从而提升了画面质量。 本实施例的背光源包括多个光源 2和多个支撑柱 31。多个光源 2均匀且 等间隔设置； 由于多个支撑柱 31与扩散板 3形成为一体， 故多个支撑柱 31 与扩散板 3连接的端部为固定端，而支撑柱 31的与固定端相反的端部为自由 端。 在本实施例中， 多个支撑柱 31 的自由端分别落入背板 1 的多个光源 2 之间的间隔区域。如此设置，使得支撑柱 31的自由端和光源 2能够分别位于 背板 1的不同位置， 互不遮挡或干扰。
需要说明的是，显示面板 6设置在背光源的上方，支撑柱 31要足以支撑 整个显示面板 6, 同时还要避免显示面板 6因局部支撑不够而朝背光源方向 下陷，所以支撑柱 31的数量要根据显示面板 6的大小来确定，如果显示面板 6的尺寸较大， 就需要多设置几个支撑柱 31 ; 如果显示面板 6的尺寸较小， 就少设置几个支撑柱 31 , 只要能够足以支撑整个显示面板 6, 并防止显示面 板 6局部下陷即可。 如 55inch直下式产品需 8个支撑柱即可。
在一个示例中， 多个支撑柱 31 的形状相同且均匀等间隔设置， 支撑柱 31在背板 1上的正投影落入光源 2的间隔区域。这样既能避免设置在背光源 上方的显示面板出现局部下陷，又使得光源 2的正上方不会被支撑柱 31遮挡 住，从而使光源 2发出的光绝大部分能够直接照射到扩散板 3的除支撑柱 31 以外的区域， 只有小部分光线会照射到支撑柱 31 , 通过支撑柱 31后再照射 到扩散板 3的对应着支撑柱 31的区域。
本实施例中，支撑柱 31的形状包括倒圓锥台状、 圓柱状和倒棱锥台状等 各种柱状结构。这里所说的倒圓锥台状以及倒棱锥台状的支撑柱 31是指支撑 柱 31的固定端的截面积大于其自由端的截面积。 这样形状的支撑柱 31能够 使支撑柱 31与扩散板 3之间的连接更加牢固。 支撑柱 31的高度设置能使扩 散板 3对光源 2发出的光均匀混合并扩散。例如，支撑柱 31的高度的设置要 根据背板 1上光源 2的设置密度以及光源 2的发光性能来确定， 最终要确保 扩散板 3能够对光源 2发出的光均匀混合并扩散。 另外， 根据背板 1上光源 2的设置密度， 一般情况下， 支撑柱 31的自由端与背板 1的设置有光源 2的 板面相接触的面的直径范围为 1.5-2.5mm。 该直径的尺寸小于相邻两光源 2 之间的距离。 从而使支撑柱 31的自由端落入背板 1的光源 2的间隔区域。
支撑柱 31与扩散板 3例如釆用聚碳酸酯 PC、 苯乙烯共聚物 MS或聚苯 乙烯 PS材料形成。 这些材料具有对光源 2发出的光进行均勾混合和扩散的 性能。
本实施例中， 扩散板 3的上方还可以设置有光学膜片 5 , 光学膜片 5用 于对透过扩散板 3的光进行光学处理。 光学膜片 5通常包括一些光扩散片、 棱镜片等， 光学膜片 5能够对透过扩散板 3的光线进行进一步的混合扩散和 反射， 以使光源 2发出的光更加均匀地照射到显示面板 6, 还能提高光线的 利用率。 进一步提升画面质量。 第二实施例
本实施例提供一种背光源， 如图 3所示， 该背光源可具有与第一实施例 提供的背光源基本上相同的构造， 除了发光粒子 4之外。 因此， 这里将省略 相同部件的重复描述， 并且相同的术语和相同的附图标记用于表示相同的部 件。
在第二实施例中， 形成支撑柱 31的材料中还添加有发光粒子 4, 发光粒 子 4接受光源 2照射能够发光。其中，发光粒子 4可釆用稀土元素钕或铕等。 这些材料遵守反斯托克斯效应， 即在光源 2的照射下， 这些材料的发光中心 吸收两个或两个以上的光子后， 经过无辐射弛豫达到发光能级， 能级跃迁到 基态即可发射出一个可见光子。
在第一实施例中，小部分的光线入射到支撑柱 31并在其中传播或支撑柱
31吸收或反射， 从而可能造成扩散板 3的设置有支撑柱 31的区域与未设置 有支撑柱 31的区域之间存在亮度差异。相比于第一实施例，在第二实施例的 背光源中， 通过添加发光粒子 4, 使支撑柱 31本身也成为一个发光源， 从而 可减少或消除扩散板 3的设置有支撑柱 31的区域与未设置有支撑柱 31的区 域之间的亮度差异， 提升了画面质量。 第三实施例
本实施例提供一种背光源， 如图 4所示， 该背光源可具有与第二实施例 提供的背光源基本上相同的构造， 除了反射片 7之外。 因此， 这里将省略相 同部件的重复描述，并且相同的术语和相同的附图标记用于表示相同的部件。
在第三实施例中，在背板 1和扩散板 3之间还设置有反射片 7 ,反射片 7 在对应着光源 2的区域开设有通孔， 光源 2发出的光线透过通孔射向扩散片 3 , 支撑柱 31的自由端与反射片 7接触。
反射片 7例如紧贴背板 1设置， 反射片 7的设置能使光源 2发射的照射 到背板 1上的光线被反射片 7反射至扩散板 3 , 从而提高了光线的利用率。 从而进一步提升画面质量。 第一至第三实施例的背光源具有如下的有益效果： 通过使支撑柱与扩散 板釆用相同的材料一体成型形成， 组装时， 只需将一体的扩散板和支撑柱放 置到背板上即可， 无需将支撑柱另外固定到扩散板， 从而大大提高了背光源 的组装效率； 另外， 一体成型的支撑柱与扩散板使得支撑柱与扩散板之间不 会出现接触阴影， 从而提升了画面质量。 第四实施例
本实施例提供一种显示装置， 包括显示面板， 还包括第一至第三实施例 中任一的背光源， 显示面板设置于背光源的上方。
该显示装置通过釆用第一至第三实施例中任一的背光源， 提高了组装效 率， 且提升了画面显示质量。
该显示装置可以为： 液晶面板、 手机、 平板电脑、 电视机、 显示器、 笔 记本电脑、 数码相框、 导航仪等任何具有显示功能的产品或部件。
根据上述描述， 根据本公开的实施例至少可以提供以下结构：
( 1 )一种背光源， 包括背板、 光源和扩散板， 所述光源设置在所述背板 的板面上， 所述扩散板与所述背板的板面相互平行， 且所述扩散板设置在所 述背板设置有所述光源的一侧、 并与所述光源相对， 所述扩散板与所述背板 之间还设置有支撑柱， 所述支撑柱与所述扩散板釆用相同的材料、 且一体成 型形成。
( 2 ) « ( 1 )所述的背光源， 其中， 所述支撑柱与所述扩散板通过注 塑形成为一体， 所述支撑柱沿垂直于所述扩散板的方向延伸至所述背板设置 有所述光源的板面。
( 3 )根据（2 )所述的背光源， 包括多个所述光源和多个所述支撑柱， 其中多个所述光源均勾且等间隔设置， 多个所述支撑柱的自由端分别落入所 述光源的间隔区域。 (4)才艮据 (3)所述的背光源， 其中， 多个所述支撑柱的形状相同且等 间隔设置， 所述支撑柱在所述背板上的正投影落入所述光源的间隔区域。
(5)根据 (1 )至（4)中任一项所述的背光源， 其中， 所述支撑柱的形 状包括倒圓锥台状、 圓柱状和倒棱锥台状。
(6)根据 (1 )至（5)中任一项所述的背光源， 其中， 所述支撑柱的高 度设置为能使所述扩散板对所述光源发出的光均匀混合并扩散。
(7)根据（6)所述的背光源， 其中， 所述支撑柱与所述扩散板釆用聚 碳酸酯、 苯乙烯共聚物或聚苯乙烯材料形成。
(8)根据 (1 )至（7)中任一项所述的背光源， 其中， 形成所述支撑柱 包括发光粒子， 所述发光粒子接受所述光源照射能够发光。
(9)根据（8)所述的背光源， 其中， 所述发光粒子釆用钕或铕。
(10)根据（1 )至（9) 中任一项所述的背光源， 其中， 在所述背板和 所述扩散板之间还设置有反射片， 所述反射片在对应着所述光源的区域开设 有通孔， 所述光源发出的光线透过所述通孔射向所述扩散片， 所述支撑柱的 自由端与所述反射片接触。
( 11 )根据（ 1 )至（ 10 )中任一项所述的背光源， 其中， 所述扩散板的 上方还设置有光学膜片， 所述光学膜片用于对透过所述扩散板的光进行光学 处理。
( 12 )一种显示装置， 包括显示面板以及根据（ 1 )至（ 11 )中任一项所 述的背光源， 其中所述显示面板设置于所述背光源的上方。
虽然上文中已经用一般性说明及具体实施方式， 对本公开作了详尽的描 述， 但在本公开基础上， 可以对之作一些修改或改进， 这对本领域技术人员 而言是显而易见的。 因此， 在不偏离本公开精神的基础上所做的这些修改或 改进， 均属于本公开要求保护的范围。
本申请要求于 2013年 12月 23日递交的中国专利申请第 201310717990.6 号的优先权， 在此全文引用上述中国专利申请公开的内容以作为本申请的一 部分。

Claims

权利要求书
1.一种背光源， 包括背板、 光源和扩散板， 所述光源设置在所述背板的 板面上， 所述扩散板与所述背板的板面相互平行， 且所述扩散板设置在所述 背板设置有所述光源的一侧、 并与所述光源相对， 所述扩散板与所述背板之 间还设置有支撑柱， 所述支撑柱与所述扩散板釆用相同的材料、 且一体成型 形成。
2.根据权利要求 1所述的背光源， 其中， 所述支撑柱与所述扩散板通过 注塑形成为一体， 所述支撑柱沿垂直于所述扩散板的方向延伸至所述背板设 置有所述光源的板面。
3.根据权利要求 2所述的背光源，包括多个所述光源和多个所述支撑柱， 其中多个所述光源均勾且等间隔设置， 多个所述支撑柱的自由端分别落入所 述光源的间隔区域。
4.根据权利要求 3所述的背光源， 其中， 多个所述支撑柱的形状相同且 等间隔设置， 所述支撑柱在所述背板上的正投影落入所述光源的间隔区域。
5.根据权利要求 1至 4中任一项所述的背光源， 其中， 所述支撑柱的形 状包括倒圓锥台状、 圓柱状和倒棱锥台状。
6.根据权利要求 1至 5中任一项所述的背光源， 其中， 所述支撑柱的高 度设置为能使所述扩散板对所述光源发出的光均匀混合并扩散。
7.根据权利要求 6所述的背光源， 其中， 所述支撑柱与所述扩散板釆用 聚碳酸酯、 苯乙烯共聚物或聚苯乙烯材料形成。
8.根据权利要求 1至 7中任一项所述的背光源， 其中， 形成所述支撑柱 包括发光粒子， 所述发光粒子接受所述光源照射能够发光。
9.根据权利要求 8所述的背光源， 其中， 所述发光粒子釆用钕或铕。
10.根据权利要求 1至 9中任一项所述的背光源， 其中， 在所述背板和 所述扩散板之间还设置有反射片， 所述反射片在对应着所述光源的区域开设 有通孔， 所述光源发出的光线透过所述通孔射向所述扩散片， 所述支撑柱的 自由端与所述反射片接触。
11.根据权利要求 1至 10中任一项所述的背光源， 其中， 所述扩散板的 上方还设置有光学膜片， 所述光学膜片用于对透过所述扩散板的光进行光学 处理。
12. 一种显示装置， 包括显示面板以及权利要求 1至 11中任一项所述的 背光源， 其中所述显示面板设置于所述背光源的上方。
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