WO2013102369A1 - Reflective sheet and direct backlight module using same - Google Patents

Reflective sheet and direct backlight module using same Download PDF

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Publication number
WO2013102369A1
WO2013102369A1 PCT/CN2012/084112 CN2012084112W WO2013102369A1 WO 2013102369 A1 WO2013102369 A1 WO 2013102369A1 CN 2012084112 W CN2012084112 W CN 2012084112W WO 2013102369 A1 WO2013102369 A1 WO 2013102369A1
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WO
WIPO (PCT)
Prior art keywords
reflective sheet
backlight module
hole
positioning hole
holes
Prior art date
Application number
PCT/CN2012/084112
Other languages
French (fr)
Chinese (zh)
Inventor
占江徽
陈守年
丁渊
吕昶
Original Assignee
京东方科技集团股份有限公司
合肥京东方光电科技有限公司
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Publication date
Application filed by 京东方科技集团股份有限公司, 合肥京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Publication of WO2013102369A1 publication Critical patent/WO2013102369A1/en

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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
    • G02F1/133605—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
    • G02F1/133611—Direct backlight including means for improving the brightness uniformity
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/46—Fixing elements

Definitions

  • the invention relates to a reflective sheet and a direct type backlight module using the same. Background technique
  • the backlight module is a very important component of the liquid crystal display.
  • the backlight module using CCFL Cold Cathode Fluorescent Lamp
  • CCFL Cold Cathode Fluorescent Lamp
  • the CCFL backlight module is divided into a direct type and a side entry type.
  • the direct type CCFL backlight module is configured to arrange the CCFL on the reflection sheet, so that the CCFL can provide a light source in the rear direction liquid crystal panel of the liquid crystal panel.
  • the reflection sheet is used to invert the light emitted by the CCFL mounted thereon toward the light output direction of the backlight module.
  • Uniformity is an important parameter for measuring the performance of a backlight module. It is the value obtained by dividing the minimum brightness value on the backlight module by the center brightness.
  • the method can be improved to some extent by increasing the number of diaphragms and using a special pattern (dot) diffusion plate. At one point, but this will not only increase the manufacturing cost of the module, but also the effect of improvement is very small. Summary of the invention
  • Embodiments of the present invention provide a reflective sheet and a direct type backlight module using the same, which can significantly increase the uniformity of the module when the thickness of the module is constant, without increasing the module. manufacturing cost.
  • a reflective sheet is provided with a positioning hole for fixing the reflective sheet on the backlight module and a lamp holder positioning hole for fixing the lamp tube on the reflective sheet, the reflective sheet further comprising: a central portion of the reflective sheet, and a through hole provided at a position other than the positioning hole and the lamp holder positioning hole.
  • a direct type backlight module includes: a CCFL and the above-mentioned reflective sheet, wherein the lamp holder positioning hole in the reflective sheet is used for fixing the CCFL.
  • FIG. 1 is a plan view of a reflective sheet according to an embodiment of the present invention. detailed description
  • the embodiment of the present invention provides a reflective sheet, and a reflective sheet positioning hole for fixing the reflective sheet on the backlight module and a lamp holder positioning hole for fixing the light tube on the reflective sheet are disposed thereon.
  • the reflection sheet further includes: a through hole provided at a position other than the reflection sheet positioning hole and the lamp holder positioning hole in a central region of the reflection sheet.
  • a direct type backlight module comprising: a CCFL and the above-mentioned reflective sheet, wherein the lamp holder positioning hole in the reflective sheet is used for fixing the CCFL.
  • the through hole can leak a part of the light emitted by the lamp tube mounted on the reflection sheet, the penetration can be reduced.
  • the brightness of the backlight module near the hole since the through hole is disposed in the central area of the reflective sheet, the center brightness of the backlight module to which the reflective sheet is applied can be reduced, thereby significantly improving the uniformity of the backlight module.
  • the through hole can be formed on the reflective sheet while the reflective sheet positioning hole and the lamp holder positioning hole are formed. At the specified position, no additional steps are required, and therefore, the cost of the reflection sheet and the backlight module using the reflection sheet is not increased.
  • the embodiment of the present invention provides a reflective sheet, as shown in FIG. 1 , which is provided with a reflective sheet positioning hole A for fixing the reflective sheet on the backlight module and for fixing the light tube D (dotted line drawing)
  • the rectangle is drawn with a dotted line to indicate the position of the lamp D on the reflection sheet.
  • the lamp holder positioning hole B on the reflection sheet (the holes included in the dotted line are all the lamp holder positioning holes B) And further comprising: a through hole C provided at a central portion of the reflection sheet (a circle drawn by a broken line), a position other than the reflection sheet positioning hole A and the lamp holder positioning hole B.
  • the through hole C can leak a part of the light emitted from the lamp D mounted on the reflection sheet, the brightness of the backlight module near the through hole C can be reduced.
  • the through hole C is disposed in a central region of the reflective sheet, and the central region is a corresponding region of the backlight module region when the brightness of the center is measured, the backlight module to which the reflective sheet is applied can be reduced.
  • the brightness of the center can improve the uniformity of the backlight module.
  • the shape of the through hole C may be circular or elliptical, and may be other shapes.
  • the through hole is designed to be circular or elliptical, it is convenient to perform the paper release operation during the production of the reflective sheet.
  • the number of the through holes C may be 18 as shown in FIG. 1 , and the rows are arranged in three rows on the reflective sheet, and the through holes may be circular holes having a diameter of 4 mm, and the through holes may be spaced along the length of the tube D. for
  • the 3 rows of through holes can be staggered, or they can be opened well, arranged in a rectangular shape, and the staggered distribution can avoid the brightness of the center is too low, resulting in abnormal LCD screen.
  • Table 1 shows the uniform comparison results of the backlight module using the reflection plate without the through hole and the backlight module using the reflection plate provided with the through hole.
  • the number, size, position, arrangement, and spacing of the through holes in the reflective sheet can be determined according to the picture quality requirements and mechanical design characteristics of the backlight module using the reflective sheet, as shown in FIG. The situation is just one of the implementations.
  • the embodiment of the invention further provides a direct type backlight module, comprising: a CCFL and the above-mentioned reflective sheet, wherein the lamp holder positioning hole in the reflective sheet is used for fixing the CCFL.
  • the uniformity can be remarkably improved, and the cost is low.

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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)

Abstract

A reflective sheet on which reflective sheet positioning holes (A) for fixing the reflective sheet on a backlight module and tube supporter positioning holes (B) for fixing tubes (D) on the reflective sheet are disposed. The reflective sheet further comprises through holes (C) disposed in the central region except the reflective sheet positioning holes (A) and the tube supporter positioning holes (B) of the reflective sheet. The through holes (C) are disposed in the central region of the reflective sheet; therefore, central brightness of the backlight module using the reflective sheet can be reduced and brightness uniformity of the backlight module can be obviously improved.

Description

反射片及应用该反射片的直下式背光模组 技术领域  Reflective sheet and direct type backlight module using the same
本发明涉及反射片及应用该反射片的直下式背光模组。 背景技术  The invention relates to a reflective sheet and a direct type backlight module using the same. Background technique
背光模组是液晶显示器非常重要的组成部件， 采用 CCFL (Cold Cathode Fluorescent Lamp,冷阴极荧光灯管）的背光模组由于其价格低廉、技术成熟， 仍被现有的大多数液晶显示器所使用。  The backlight module is a very important component of the liquid crystal display. The backlight module using CCFL (Cold Cathode Fluorescent Lamp) is still used by most existing liquid crystal displays because of its low price and mature technology.
CCFL背光模组分为直下式和侧入式， 其中， 直下式 CCFL背光模组是 把 CCFL配置在反射片上， 使得这些 CCFL能在液晶面板的后方向液晶面板 提供光源。 反射片用于将安装于其上的 CCFL所发出的光线朝背光模组的出 光方向反寸。  The CCFL backlight module is divided into a direct type and a side entry type. The direct type CCFL backlight module is configured to arrange the CCFL on the reflection sheet, so that the CCFL can provide a light source in the rear direction liquid crystal panel of the liquid crystal panel. The reflection sheet is used to invert the light emitted by the CCFL mounted thereon toward the light output direction of the backlight module.
均一度是衡量背光模组性能的一个重要参数， 是该背光模组上的亮度最 小值除以中心亮度后获得的数值。 在制造直下式 CCFL背光模组的过程中， 在背光模组的厚度 （混光距离） 确定后， 可以通过增加膜片数量、 使用特殊 pattern (网点） 的扩散板等方法在一定程度上改善均一度， 但是这样不仅会 增加模组的制造成本， 而且改善的效果也非常小。 发明内容  Uniformity is an important parameter for measuring the performance of a backlight module. It is the value obtained by dividing the minimum brightness value on the backlight module by the center brightness. In the process of manufacturing a direct-type CCFL backlight module, after the thickness (mixing distance) of the backlight module is determined, the method can be improved to some extent by increasing the number of diaphragms and using a special pattern (dot) diffusion plate. At one point, but this will not only increase the manufacturing cost of the module, but also the effect of improvement is very small. Summary of the invention
本发明的实施例提供了一种反射片及应用该反射片的直下式背光模组， 可在该模组厚度一定的情况下显著增加该模组的均一度， 且不会增加该模组 的制造成本。  Embodiments of the present invention provide a reflective sheet and a direct type backlight module using the same, which can significantly increase the uniformity of the module when the thickness of the module is constant, without increasing the module. manufacturing cost.
为达到上述目的， 本发明的实施例公开了如下技术方案：  In order to achieve the above object, embodiments of the present invention disclose the following technical solutions:
一种反射片， 其上设置有用于固定所述反射片于背光模组上的定位孔及 用于固定灯管于所述反射片上的灯托定位孔， 所述反射片还包括： 在所述反 射片的中心区域、 除所述定位孔及所述灯托定位孔以外的位置设置的透孔。  A reflective sheet is provided with a positioning hole for fixing the reflective sheet on the backlight module and a lamp holder positioning hole for fixing the lamp tube on the reflective sheet, the reflective sheet further comprising: a central portion of the reflective sheet, and a through hole provided at a position other than the positioning hole and the lamp holder positioning hole.
一种直下式背光模组， 包括： CCFL 及上述的反射片， 所述反射片中的 灯托定位孔用于固定所述 CCFL。 附图说明 A direct type backlight module includes: a CCFL and the above-mentioned reflective sheet, wherein the lamp holder positioning hole in the reflective sheet is used for fixing the CCFL. DRAWINGS
为了更清楚地说明本发明实施例的技术方案， 下面将对实施例的附图作 简单地介绍， 显而易见地， 下面描述中的附图仅仅涉及本发明的一些实施例， 而非对本发明的限制。  In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below. It is obvious that the drawings in the following description relate only to some embodiments of the present invention, and are not intended to limit the present invention. .
图 1为本发明实施例提供的反射片的平面视图。 具体实施方式  FIG. 1 is a plan view of a reflective sheet according to an embodiment of the present invention. detailed description
为使本发明实施例的目的、 技术方案和优点更加清楚， 下面将结合本发 明实施例的附图， 对本发明实施例的技术方案进行清楚、 完整地描述。 显然， 所描述的实施例是本发明的一部分实施例， 而不是全部的实施例。 基于所描 述的本发明的实施例， 本领域普通技术人员在无需创造性劳动的前提下所获 得的所有其他实施例， 都属于本发明保护的范围。  The technical solutions of the embodiments of the present invention will be clearly and completely described in the following with reference to the accompanying drawings. It is apparent that the described embodiments are part of the embodiments of the invention, rather than all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the described embodiments of the present invention without departing from the scope of the invention are within the scope of the invention.
除非另作定义， 此处使用的技术术语或者科学术语应当为本发明所属领 域内具有一般技能的人士所理解的通常意义。 本发明专利申请说明书以及权 利要求书中使用的 "第一"、 "第二" 以及类似的词语并不表示任何顺序、 数 量或者重要性， 而只是用来区分不同的组成部分。 同样， "一个" 或者 "一" 等类似词语也不表示数量限制， 而是表示存在至少一个。  Unless otherwise defined, technical terms or scientific terms used herein shall be of the ordinary meaning understood by those of ordinary skill in the art to which the invention pertains. The words "first", "second" and similar terms used in the specification and claims of the present invention are not intended to indicate any order, quantity or importance, but merely to distinguish different components. Similarly, the words "a" or "an" do not mean a quantity limitation, but rather mean that there is at least one.
本发明实施例提供了一种反射片， 在其上设置有用于固定所述反射片于 背光模组上的反射片定位孔及用于固定灯管于所述反射片上的灯托定位孔， 所述反射片还包括： 在所述反射片的中心区域、 除所述反射片定位孔及所述 灯托定位孔以外的位置设置的透孔。  The embodiment of the present invention provides a reflective sheet, and a reflective sheet positioning hole for fixing the reflective sheet on the backlight module and a lamp holder positioning hole for fixing the light tube on the reflective sheet are disposed thereon. The reflection sheet further includes: a through hole provided at a position other than the reflection sheet positioning hole and the lamp holder positioning hole in a central region of the reflection sheet.
根据本发明的另一个实施例， 提供了一种直下式背光模组， 其包括： CCFL及上述的反射片， 所述反射片中的灯托定位孔用于固定所述 CCFL。  According to another embodiment of the present invention, a direct type backlight module is provided, comprising: a CCFL and the above-mentioned reflective sheet, wherein the lamp holder positioning hole in the reflective sheet is used for fixing the CCFL.
在根据本发明实施例的反射片及应用该反射片的直下式背光模组中， 由 于透孔可以将安装于所述反射片上的灯管所发出光线中的一部分光线漏掉， 因此可降低透孔附近的背光模组的亮度。 另外， 由于透孔设置于所述反射片 的中心区域， 因此能降低应用该反射片的背光模组的中心亮度， 从而能显著 提高背光模组的均一度。  In the reflection sheet according to the embodiment of the invention and the direct type backlight module using the reflection sheet, since the through hole can leak a part of the light emitted by the lamp tube mounted on the reflection sheet, the penetration can be reduced. The brightness of the backlight module near the hole. In addition, since the through hole is disposed in the central area of the reflective sheet, the center brightness of the backlight module to which the reflective sheet is applied can be reduced, thereby significantly improving the uniformity of the backlight module.
进一步地，由于采用了在反射片上打孔的方式来提高背光模组的均一度， 可以使得在制作反射片定位孔及灯托定位孔的同时， 将透孔形成在反射片的 指定位置上， 不需要增加额外的工序， 因此， 不会增加该反射片及使用该反 射片的背光模组的成本。 Further, since the uniformity of the backlight module is improved by punching the reflective sheet, the through hole can be formed on the reflective sheet while the reflective sheet positioning hole and the lamp holder positioning hole are formed. At the specified position, no additional steps are required, and therefore, the cost of the reflection sheet and the backlight module using the reflection sheet is not increased.
下面将结合附图， 对本发明实施例中的技术方案进行描述。  The technical solutions in the embodiments of the present invention will be described below with reference to the accompanying drawings.
本发明的实施例提供了一种反射片， 如图 1所示， 其上设置有用于固定 所述反射片于背光模组上的反射片定位孔 A及用于固定灯管 D (虛线绘制的 长方形， 用虛线绘制的目的是为了表示灯管 D在反射片上的位置） 于所述反 射片上的灯托定位孔 B (虛线绘制的椭圆形中包含的孔都是灯托定位孔 B)， 其还包括：在所述反射片的中心区域（虛线绘制的圆形）、除所述反射片定位 孔 A及所述灯托定位孔 B以外的位置设置的透孔 C。  The embodiment of the present invention provides a reflective sheet, as shown in FIG. 1 , which is provided with a reflective sheet positioning hole A for fixing the reflective sheet on the backlight module and for fixing the light tube D (dotted line drawing) The rectangle is drawn with a dotted line to indicate the position of the lamp D on the reflection sheet. The lamp holder positioning hole B on the reflection sheet (the holes included in the dotted line are all the lamp holder positioning holes B) And further comprising: a through hole C provided at a central portion of the reflection sheet (a circle drawn by a broken line), a position other than the reflection sheet positioning hole A and the lamp holder positioning hole B.
由于透孔 C可以将安装于所述反射片上的灯管 D所发出光线中的一部分 光线漏掉， 因此可降低透孔 C附近的背光模组的亮度。 另外， 由于透孔 C设 置于所述反射片的中心区域， 而中心区域为测量中心亮度时所选定的背光模 组区域在反射片上对应的区域， 因此能降低应用该反射片的背光模组的中心 亮度， 从而能提高背光模组的均一度。 通过在反射片上打孔的方式来提高背 光模组的均一度， 可以使反射片生产厂家在制作反射片上的定位孔 A及灯托 定位孔 B的同时， 能将透孔 C形成在反射片的指定位置上， 不需要增加额外 的工序， 因此， 不会增加该反射片的成本。  Since the through hole C can leak a part of the light emitted from the lamp D mounted on the reflection sheet, the brightness of the backlight module near the through hole C can be reduced. In addition, since the through hole C is disposed in a central region of the reflective sheet, and the central region is a corresponding region of the backlight module region when the brightness of the center is measured, the backlight module to which the reflective sheet is applied can be reduced. The brightness of the center can improve the uniformity of the backlight module. By increasing the uniformity of the backlight module by punching holes on the reflective sheet, the reflector manufacturer can form the through hole C in the reflective sheet while making the positioning hole A and the lamp holder positioning hole B on the reflective sheet. No additional process is required at the specified location, so the cost of the reflector is not increased.
透孔 C的形状可以为圆形或椭圆形， 也可以为其它形状。 例如， 如果将 透孔设计成圆形或椭圆形， 便于在反射片生产过程中进行脱纸操作。  The shape of the through hole C may be circular or elliptical, and may be other shapes. For example, if the through hole is designed to be circular or elliptical, it is convenient to perform the paper release operation during the production of the reflective sheet.
透孔 C的个数可以为图 1所示的 18个， 分为 3行排列在所述反射片上， 且透孔可以是直径为 4mm 的圆孔， 透孔沿灯管 D 长度方向的间隔可以为 The number of the through holes C may be 18 as shown in FIG. 1 , and the rows are arranged in three rows on the reflective sheet, and the through holes may be circular holes having a diameter of 4 mm, and the through holes may be spaced along the length of the tube D. for
10mm, 垂直于灯管 D长度方向的间隔为 8mm。 10mm, perpendicular to the length of the tube D, the interval is 8mm.
3 行透孔可以错开分布， 也可以不错开， 排列成长方形， 错开分布的方 式可以避免中心亮度过低， 导致的液晶显示器画面异常。  The 3 rows of through holes can be staggered, or they can be opened well, arranged in a rectangular shape, and the staggered distribution can avoid the brightness of the center is too low, resulting in abnormal LCD screen.
表 1示出了采用未设置透孔的反射板的背光模组和采用设置了透孔的反 射板的背光模组均一度的对比结果。  Table 1 shows the uniform comparison results of the backlight module using the reflection plate without the through hole and the backlight module using the reflection plate provided with the through hole.
表 1 反射板未设置透孔和设置透孔的背光模组的亮度均一度 背光模组编号 1 2 3 4 5 未设置透孔 75.0% 74.3% 76.7% 75.7% 76.4% 设置透孔 78.3% 80.9% 78.9% 79.1% 80.1% 当然， 反射片上透孔的个数、 大小、 在中心区域中的位置、 排列方式及 间距等， 都可以根据使用该反射片的背光模组的画面品质要求及机械设计特 性决定， 图 1所示的情形只是其中一种实施方式。 Table 1 The brightness of the backlight module without the through hole and the through hole is uniform. Backlight module number 1 2 3 4 5 No through hole 75.0% 74.3% 76.7% 75.7% 76.4% Set through hole 78.3% 80.9% 78.9% 79.1% 80.1% Of course, the number, size, position, arrangement, and spacing of the through holes in the reflective sheet can be determined according to the picture quality requirements and mechanical design characteristics of the backlight module using the reflective sheet, as shown in FIG. The situation is just one of the implementations.
本发明实施例还提供了一种直下式背光模组， 包括： CCFL 及上述的反 射片， 该反射片中的灯托定位孔用于固定该 CCFL。  The embodiment of the invention further provides a direct type backlight module, comprising: a CCFL and the above-mentioned reflective sheet, wherein the lamp holder positioning hole in the reflective sheet is used for fixing the CCFL.
本发明实施例提供的直下式背光模组中， 由于使用了上述具有透孔的反 射片， 可显著提高均一度， 且成本低。  In the direct type backlight module provided by the embodiment of the present invention, since the above-mentioned reflector having a through hole is used, the uniformity can be remarkably improved, and the cost is low.
以上所述仅是本发明的示范性实施方式， 而非用于限制本发明的保护范 围， 本发明的保护范围由所附的权利要求确定。  The above is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. The scope of the present invention is defined by the appended claims.

Claims

权利要求书 Claim
1、一种反射片， 其上设置有用于将该反射片固定于背光模组上的反射片 定位孔及用于将灯管固定于所述反射片上的灯托定位孔， 其中， 还包括： 在 所述反射片的中心区域、 除所述反射片定位孔及所述灯托定位孔以外的位置 设置的透孔； 所述中心区域是测量中心亮度时所选定的背光模组区域对应在 所述反射片上的区域。 A reflective sheet, which is provided with a reflective sheet positioning hole for fixing the reflective sheet to the backlight module, and a lamp holder positioning hole for fixing the tube to the reflective sheet, wherein the method further includes: a through hole provided at a position other than the reflection piece positioning hole and the lamp holder positioning hole in a central area of the reflection sheet; the central area is a backlight module area selected when the center brightness is measured The area on the reflective sheet.
2、 根据权利要求 1所述的反射片， 其中， 所述透孔的形状为圆形或椭 圆形。  The reflection sheet according to claim 1, wherein the through hole has a circular shape or an elliptical shape.
3、 根据权利要求 1所述的反射片， 其中， 所述透孔的个数为 18个， 分 为 3行排列在所述反射片上， 所述透孔是直径为 4mm的圆孔， 所述透孔间 沿所述灯管长度方向的间隔为 10mm， 垂直于所述灯管长度方向的间隔为 8mm0 The reflection sheet according to claim 1, wherein the number of the through holes is 18, and the rows are arranged in three rows on the reflection sheet, and the through holes are circular holes having a diameter of 4 mm. between the through hole of the lamp tube along the longitudinal direction at intervals of 10mm, the spacing perpendicular to the tube longitudinal direction is 8mm 0
4、 根据权利要求 3所述的反射片， 其中， 所述 3行透孔错开分布。  The reflection sheet according to claim 3, wherein the three rows of through holes are staggered.
5、 一种直下式背光模组， 包括： 冷阴极荧光灯管， 其中， 还包括： 权 利要求 1〜4中任一项所述的反射片，所述反射片的灯托定位孔用于固定所述 冷阴极荧光灯管。 A direct-lit backlight module, comprising: a cold cathode fluorescent lamp, wherein: the reflective sheet according to any one of claims 1 to 4, wherein the lamp holder positioning hole of the reflective sheet is used for fixing A cold cathode fluorescent tube is described.
PCT/CN2012/084112 2012-01-04 2012-11-06 Reflective sheet and direct backlight module using same WO2013102369A1 (en)

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