WO2013185385A1 - 3d显示的背光模组及其led灯条 - Google Patents

3d显示的背光模组及其led灯条 Download PDF

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Publication number
WO2013185385A1
WO2013185385A1 PCT/CN2012/077808 CN2012077808W WO2013185385A1 WO 2013185385 A1 WO2013185385 A1 WO 2013185385A1 CN 2012077808 W CN2012077808 W CN 2012077808W WO 2013185385 A1 WO2013185385 A1 WO 2013185385A1
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Prior art keywords
led
partition
led light
light bar
backlight module
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PCT/CN2012/077808
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English (en)
French (fr)
Inventor
贺虎
Original Assignee
深圳市华星光电技术有限公司
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Application filed by 深圳市华星光电技术有限公司 filed Critical 深圳市华星光电技术有限公司
Priority to US13/579,281 priority Critical patent/US8608364B1/en
Publication of WO2013185385A1 publication Critical patent/WO2013185385A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
    • G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2213/00—Details of stereoscopic systems
    • H04N2213/001—Constructional or mechanical details

Definitions

  • the present invention relates to liquid crystal display technology, and in particular to a backlight module for 3D display and an LED light bar thereof. Background technique
  • the common 3D display modes include Shutter Glass and Film-type Patterned Retarder.
  • Shutter-type 3D which needs to be scanned by Scanning Backlight with Panel scanning.
  • the backlight is usually partitioned.
  • a side-light LED bar is divided into multiple zones.
  • the first frame of the panel scans the first zone, the LEDs of the first zone are illuminated and the rest of the zone is turned off.
  • the panel signal is scanned to the second zone, only the LEDs of the second zone are illuminated; the same is true for other zones. This is required for every frame.
  • the effect of the shuttered 3D display is measured by the cross talk between the partitions. The lower the crosstalk, the better the display. This crosstalk is mainly determined by the crosstalk between the backlight partitions and the timing design.
  • FIG. 1 it is a side view of a prior art light guide plate having an upper microstructure.
  • 1 is a view of the light guide plate 10 viewed from the incident side of the light, and the upper surface of the light guide plate 10 has a zigzag upper microstructure perpendicular to the undulating distribution of light on the upper surface of the light guide plate 10 in the direction in which the light propagates in the light guide plate 10.
  • the microstructure has 2 ⁇ ⁇ light guide plate and the flat plate type light guide plate 2 as compared to the more ⁇ 'Convergence of the prior art, but in fact 5, despite having preclude the use of a micro
  • the light guide plate 20 of the structure will be partially converged, but there will still be some degree of divergence.
  • FIG. 3 a light field distribution diagram when a partition of a common upper micro-structure light guide plate 30 is lit, when the upper micro-structure light guide plate 30 is illuminated, the light type will change with the distance. Changed more divergent.
  • FIG. 4 it shows the brightness distribution of the light pattern shown in FIG. 3 along the vertical direction. Intention, the luminance distribution in the vertical direction is represented by a half-height width (FWHM), and the left side is the light-incident side.
  • FIG. 5 it is a schematic diagram of the width corresponding to the 1/2 brightness of different positions in FIG. 4 as a function of distance. In the single short edge light input mode, the half-high width becomes larger as the distance increases. . That is, the crosstalk on the high beam side is more serious than that on the light side when the single short side enters the light.
  • FIG. 6 is a schematic diagram of the structure of the existing side-mounted LED light bar.
  • the LED strip 60 shown in FIG. 6 is divided into two partitions 63 and 64.
  • the arrangement of the LEDs 61 on the side LED strips 60 is not specifically designed according to the range, usually between the LEDs 61.
  • the pitch (Pitch) is 624.
  • FIG. 7 and FIG. 8 it is a schematic diagram of backlight light field overlap of a conventional single short-edge light-in and double-short-edge light-emitting backlight module, showing the overlapping light field overlap condition of four partitions
  • FIG. 7 is A backlight module with a single short side light entrance is provided with an LED light bar 71 on a short side of the light guide plate 70.
  • FIG. 8 is a backlight module with double short-edge light, and LED strips 81 and 82 are respectively disposed on opposite short sides of the light guide plate 80.
  • FIGS. 7 and 8 are distinguished by dotted lines, dashed lines and solid lines, respectively.
  • the intersection of the light fields between different partitions is larger, so the crosstalk is larger.
  • the light strips in Figures 7 and 8 are divided into four light strip partitions, wherein the partitions 1 to 4 respectively represent four partitions and are respectively distinguished by a dotted line, a broken line, a solid line and a dotted line, and the different lines in the figure ( Dotted lines, dashed lines, solid lines, and dotted lines represent the boundary of the maximum brightness of the one-half partition when the corresponding partition is individually lit.
  • an object of the present invention is to provide a backlight module for a 3D display and an LED strip thereof, which can reduce the cross talk between partitions when scanning the backlight, thereby improving the effect of the 3D display.
  • the present invention provides a 3D display backlight module, including a light guide plate and at least one LED light bar, the LED light bar is disposed on one side of the light guide plate, and the LED light bar includes a plurality of LEDs and a substrate, the LEDs are linearly arranged and fixed on the substrate, and the LEDs and the substrate of the LED strip are divided into a plurality of partitions according to a predetermined backlight scanning design, and the LED spacing in each partition is smaller than the partition LED spacing between partitions.
  • the LED light bar is disposed on a short side of the light guide plate.
  • the two LED strips are disposed on opposite short sides of the light guide plate. Among them, in each partition, the LED spacing in the sub-area is the same or different.
  • the distance between the LEDs in the center of the partition is the smallest, and the distance between the LEDs from the center to the edge is gradually increased.
  • the substrate is a flexible circuit board or a PCB board.
  • the present invention further provides a backlight module for a 3D display, comprising a light guide plate and at least one LED light bar, wherein the LED light bar is disposed on a side of the light guide plate, the LED light bar comprises a plurality of LEDs and a substrate, The LEDs are arranged in a line on the substrate, and the LEDs and the substrate of the LED strip are divided into a plurality of partitions according to a predetermined backlight scanning design, and the LED spacing in each partition is smaller than between the partition and its adjacent partition. LED spacing;
  • the two LED strips are disposed on opposite short sides of the light guide plate;
  • the LED spacing in the sub-zone is the same or different
  • the distance between the LEDs in the center of the partition is the smallest, and the distance between the LEDs from the center to the edge is gradually increased;
  • the substrate is a flexible circuit board or a PCB board.
  • the invention also provides an LED strip of a backlight module of a 3D display, comprising a plurality of LEDs and a substrate, wherein the LEDs are linearly arranged and fixed on the substrate, and the LEDs and the substrate are designed according to a predetermined backlight scan.
  • the corresponding partition is divided into multiple partitions, and the LED spacing in each partition is smaller than the LED spacing between the partition and its adjacent partition.
  • the LED spacing in the sub-area is the same or different.
  • the distance between the LEDs in the center of the partition is the smallest, and the distance between the LEDs from the center to the edge is gradually increased.
  • the substrate is a flexible circuit board or a PCB board.
  • the cross-over range between different partitions of the backlight module of the 3D display of the present invention is reduced, and the cross talk between different partitions is reduced when the backlight is scanned, and the effect of the 3D display is improved.
  • the cross-section of the LED strips of the 3D display backlight module of the present invention is reduced in different sections, and the cross talk between different partitions is reduced when the backlight is scanned, and the effect of the 3D display is improved.
  • FIG. 1 is a side view of a light guide plate having an upper microstructure in the prior art; intention;
  • Figure 3 is a schematic diagram of light field distribution when a partition of a common upper micro-structure light guide plate is lit
  • Figure 4 is a schematic view showing the brightness distribution of the light pattern shown in Figure 3 along the vertical direction;
  • Figure 5 is a schematic diagram showing the variation of the width corresponding to the 1/2 brightness of different positions in Figure 4 as a function of distance;
  • FIG. 6 is a schematic structural view of a conventional side LED light bar
  • Figure ⁇ is a schematic diagram of overlapping backlight field overlap of a conventional single-short-edge backlight module
  • FIG. 8 is a schematic diagram of overlapping backlight field overlap of a conventional dual short-edge light-emitting backlight module
  • FIG. 9 is a schematic structural view of a preferred embodiment of an LED light bar of a backlight module of the 3D display of the present invention.
  • FIG. 10 is a schematic diagram showing the difference in light pattern distribution between the LED arrangement mode of the LED light bar of the present invention and the commonly used LED arrangement mode;
  • FIG. 11 is a schematic diagram showing the backlight light field overlap of the first preferred embodiment of the backlight module of the 3D display of the present invention.
  • FIG. 12 is a schematic diagram showing the backlight light field overlap of the second preferred embodiment of the backlight module of the 3D display of the present invention. detailed description
  • FIG. 9 is a schematic structural view of a preferred embodiment of an LED light bar of a backlight module of the 3D display of the present invention.
  • the LED strip includes a plurality of LEDs 91 and a substrate 92.
  • the LEDs 91 are linearly arranged and fixed on the substrate 92.
  • the LEDs 91 and 92 are divided into a plurality of partitions according to a predetermined backlight scanning design.
  • partition 2 the LED spacing 93 within each partition is less than the LED spacing 94 between the partition and its adjacent partition.
  • the substrate 92 may be a flexible wiring board or a PCB board or the like.
  • the LED arrangement on the LED strip of the backlight module of the 3D display of the present invention is specially designed according to the partition, and the main feature is that the LED spacing in the partition is smaller than the LED spacing between the partitions.
  • the LED spacing in the sub-area can be the same or different. For example, the distance between the LEDs in the center of the partition is the smallest, and the distance from the LED to the edge of the partition is larger.
  • Figure 9 is only an illustration (only two zones are divided), and the number of LEDs on the actual light bar can be arbitrary.
  • FIG. 10 it is a schematic diagram of the difference in light pattern distribution between the conventional LED arrangement mode and the LED arrangement mode of the LED light bar of the present invention.
  • the left LED strip 100 uses a common LED arrangement
  • the right side is a 3D display backlight module using the LED arrangement of the present invention.
  • LED light bar 101 Compared with the above two arrangement methods, there are the following differences:
  • the partition size of the LED light bar is the same, but in the present invention, the LED pitch is adjusted for the partition, and the effective light-emitting width W E ( Emission Width ) in the same partition size is different.
  • the WE2 of the LED light bar 101 of the present invention is smaller than W E1 , W E2 ⁇ W E1 of the conventional LED arrangement.
  • the light field of the LED strip 101 of the present invention is more converged after the superposition of the light field, and the FWHM 2 of the LED strip 101 of the present invention is smaller than the half brightness width (FWHM).
  • the backlight module of the 3D display includes a light guide plate 110 and an LED light bar 111.
  • the LED light bar 111 is disposed on a short side of the light guide plate 110 to form a backlight module with a single short side light.
  • the LED strip 111 is configured by using the LED strip of the backlight module of the 3D display of the present invention, and includes a plurality of LEDs and a substrate.
  • the LEDs are linearly arranged and fixed on the substrate, and the LEDs and the substrate of the LED strip 111 are in accordance with
  • the predetermined backlight scan design is divided into four partitions 1 to 4, and the LED spacing in each partition is smaller than the LED spacing between the partition and its adjacent partition.
  • the light field distribution of different light strip partitions is distinguished by different lines.
  • the different lines (dotted line, dashed line, solid line and dotted line) in the figure represent the boundary of the maximum brightness of the half partition when the different partitions are individually lit.
  • the overlapping portion of the two partitions of the backlight module of the present invention that is, the cross range, is significantly reduced, and the crosstalk between the partitions is reduced.
  • the effect of the 3D display is improved.
  • the backlight module of the 3D display includes a light guide plate 120 and two LED strips 121.
  • the two LED strips 121 are respectively disposed on opposite short sides of the light guide plate 120 to form a double short side light.
  • the LED light bar 121 also adopts the configuration of the LED light bar of the backlight module of the 3D display of the present invention, and is divided into four partitions 1 to 4 according to a predetermined backlight scanning design, and the LED spacing in each partition is smaller than the partition and the phase thereof. The LED spacing between adjacent partitions.
  • the light field distribution of different light strip partitions is distinguished by different lines.
  • the different lines in the figure (dotted line, dashed line, solid line and dotted line) represent the boundary of the maximum brightness of one-half partition when different partitions are lit separately.
  • the overlapping portion of the two partitions of the backlight module of the present invention that is, the cross range, is significantly reduced, and the crosstalk between the partitions is reduced.
  • the effect of the 3D display is improved.
  • the 3D display backlight module of the present invention and the cross-section of the different sections of the LED strip are reduced, and the crosstalk between different partitions is reduced when the backlight is scanned, and the effect of the 3D display is improved.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Planar Illumination Modules (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

提供了一种3D显示的背光模组及其LED灯条（111）。该3D显示的背光模组包括导光板（110）及至少一LED灯条（111），所述LED灯条（111）设于该导光板（110）侧，所述LED灯条（111）包括多个LED（91）及基板（92），所述LED（91）呈直线排列互相间隔固定在该基板（92）上，所述LED灯条（111）的LED（91）及基板（92）按照预定的背光扫描设计对应分成多个分区，每个分区内的LED（91）的间距（93）小于该分区与其相邻分区之间的LED（91）的间距（94）。该3D显示的背光模组及其LED灯条（111）的不同分区之间的交叉范围缩小，扫描背光时不同分区之间的串扰减小，3D显示的效果得到提升。

Description

3D显示的背光模组及其 LED灯条 技术领域
本发明涉及液晶显示技术， 尤其涉及一种 3D 显示的背光模组及其 LED灯条。 背景技术
随着 3D技术的发展， 具有 3D显示功能的电视也逐渐成为主流， 目 前常见的 3D 显示模式有快门式 （Shutter Glass ) , 偏光式 （FPR, Film- type Patterned Retarder )等方式。
快门式 3D , 需要通过扫描背光 （ Scanning Backlight ) 搭配面板 ( Panel )像素扫描来实现。 背光通常会进行分区， 一条侧边式的 LED 灯 条（light bar ) 被分成多区， 当面板（panel ) 第一帧信号扫描第一区时， 第一区的 LED被点亮， 其余区关闭； 当面板（panel )信号扫描到第二区 时， 只有第二区的 LED被点亮； 同理到其他分区。 每帧都需要进行这样 的操作。 快门式 3D 显示的效果由分区间的串扰（cross talk )衡量， 串扰 越低， 显示效果越好。 而此串扰主要取决于背光分区之间的串扰及时序设 计。
背光分区间的串扰， 主要来自于不同分区之间的亮度影响， 最佳的状 态时， 某一区点亮时， 其余区块的背光都呈现暗态。 如图 1 所示， 其为现 有技术中具有上微结构的导光板的侧视图。 在导光板的上表面或下表面加 入锯齿微结构为导光板的常见设计。 图 1 为从光线入射一侧观察导光板 10, 导光板 10的上表面具有垂直于光在该导光板 10中传播方向在该导光 板 10 的上表面上连续起伏分布的锯齿形的上微结构 11 , 从而利用导光板 上表面几何形状的改变来破坏光的全反射条件。 如图 2所示， 其为现有技 可看出具有上微结 ί的导光板 2^与平板导光板 2^相比光型较为 ' 敛,5但 事实上， 尽管釆用了具有上微结构的导光板 20 光线会被部分的收敛， 但 还是会有一定程度的发散。
随着传播距离的增加， 光型发散的越大， 对其它区域的影响也最大。 如图 3 所示， 为一款常见的上微结构导光板 30 的一个分区点亮时的光场 分布示意图， 当上微结构导光板 30 —个分区点亮时， 随着距离变化光型 会变的较发散。 参见图 4, 其为图 3 所示光型沿着竖直方向的亮度分布示 意图， 竖直方向的亮度分布以半高宽度（FWHM ) 来表示， 左侧为入光 侧。 参见图 5, 其为图 4中不同位置的 1/2 亮度所对应的宽度随着距离的 变化示意图， 在单短边入光方式中， 呈现随着距离增大， 半高宽度变大的 趋势。 即单短边入光时远光侧的串扰较入光侧严重。
参见图 6, 其为现有的侧边式 LED灯条结构示意图。 图 6所示的 LED 灯条 60分为两个分区 63及 64, 目前侧边式使用的 LED 灯条 60上 LED 61 的排布未根据分区 （range )进行特殊设计， 通常 LED 61 之间的间距 ( Pitch ) 624目同。
使用这种排布的 LED 灯条在单短边入光或者双短边入光的背光模组 中， 其不同分区间的串扰较大。 如图 7和图 8所示， 其为现有单短边入光 和双短边入光的背光模组的背光光场交叠示意图， 显示四分区的背光光场 交叠状况， 图 7 为单短边入光的背光模组， 在导光板 70 的一短侧设置有 LED灯条 71。 图 8为双短边入光的背光模组， 在导光板 80的相对两短侧 分别设置有 LED灯条 81和 82。 图 7和图 8中不同灯条分区的光场分布分 别使用点划线、 虚线及实线来区分， 不同分区间光场交叉部分较大， 因此 串扰较大。 图 7和图 8中的灯条都分成四个灯条分区， 其中分区 1〜4 分别 代表四个分区并分别以点划线、 虚线、 实线及点划线来区分， 图中不同线 条（点划线、 虚线、 实线及点划线）代表对应分区单独点亮时， 二分之一 分区最大亮度的边界。 两个分区交叠部分， 即图中所标示的交叉范围 ( cross range ) 。 该交叉范围越大， 分区之间的串扰越严重， 3D显示的效 果也就越差。 发明内容
因此， 本发明的目的在于提供一种 3D显示的背光模组及其 LED 灯 条， 实现扫描背光时的分区间的串扰（cross talk )减小， 进而提升 3D 显 示的效果。
为实现上述目的， 本发明提供一种 3D 显示的背光模组， 包括导光板 及至少一 LED灯条， 所述 LED灯条设于该导光板一侧， 所述 LED灯条包 括多个 LED及基板， 所述 LED呈直线排列互相间隔固定在该基板上， 所 述 LED灯条的 LED及基板按照预定的背光扫描设计对应分成多个分区， 每个分区内的 LED间距小于该分区与其相邻分区之间的 LED间距。
其中， 包括一 LED灯条， 该 LED灯条设于该导光板的一短侧。
其中， 包括两 LED 灯条， 该两 LED 灯条设于该导光板的相对两短 侧。 其中， 在每一分区中， 分区内的 LED间距相同或不同。
其中， 所述分区内中央的 LED间距最小， 从中央向边缘的 LED间距 逐渐增大。
其中， 所述基板为柔性线路板或 PCB板。
本发明还提供一种 3D显示的背光模组， 包括导光板及至少一 LED灯 条， 所述 LED灯条设于该导光板一侧， 所述 LED灯条包括多个 LED及基 板， 所述 LED 呈直线排列互相间隔固定在该基板上， 所述 LED 灯条的 LED 及基板按照预定的背光扫描设计对应分成多个分区， 每个分区内的 LED间距小于该分区与其相邻分区之间的 LED间距；
其中， 包括两 LED 灯条， 该两 LED 灯条设于该导光板的相对两短 侧；
其中， 在每一分区中， 分区内的 LED间距相同或不同；
其中， 所述分区内中央的 LED间距最小， 从中央向边缘的 LED间距 逐渐增大；
其中， 所述基板为柔性线路板或 PCB板。
本发明还提供了一种 3D显示的背光模组的 LED灯条， 包括多个 LED 及基板， 所述 LED呈直线排列互相间隔固定在该基板上， 所述 LED及基 板按照预定的背光扫描设计对应分成多个分区， 每个分区内的 LED 间距 小于该分区与其相邻分区之间的 LED间距。
其中， 在每一分区中， 分区内的 LED间距相同或不同。
其中， 所述分区内中央的 LED间距最小， 从中央向边缘的 LED间距 逐渐增大。
其中， 所述基板为柔性线路板或 PCB板。
本发明的 3D显示的背光模组不同分区之间的交叉范围会缩小， 扫描 背光时不同分区之间的串扰（cross talk )减小， 3D显示的效果得到提升。 本发明的 3D 显示的背光模组的 LED 灯条不同分区之间的交叉范围会缩 小， 扫描背光时不同分区之间的串扰（cross talk )减小， 3D显示的效果得 到提升。 附图说明
下面结合附图， 通过对本发明的具体实施方式详细描述， 将使本发明 的技术方案及其他有益效果显而易见。
附图中，
图 1为现有技术中具有上微结构的导光板的侧视图； 意图；
图 3 为一款常见的上微结构导光板的一个分区点亮时的光场分布示意 图；
图 4为图 3所示光型沿着竖直方向的亮度分布示意图；
图 5为图 4中不同位置的 1/2 亮度所对应的宽度随着距离的变化示意 图；
图 6为现有的侧边式 LED灯条结构示意图；
图 Ί为现有单短边入光的背光模组的背光光场交叠示意图；
图 8为现有双短边入光的背光模组的背光光场交叠示意图；
图 9为本发明 3D显示的背光模组的 LED灯条一较佳实施例的结构示 意图；
图 10为本发明 LED灯条的 LED排布方式与常用的 LED排布方式的 光型分布差异示意图；
图 11为本发明 3D显示的背光模组第一较佳实施例的背光光场交叠示 意图；
图 12为本发明 3D显示的背光模组第二较佳实施例的背光光场交叠示 意图。 具体实施方式
参见图 9, 其为本发明 3D显示的背光模组的 LED灯条一较佳实施例 的结构示意图。 该 LED灯条包括多个 LED 91及基板 92, LED 91呈直线 排列互相间隔固定在基板 92上， LED 91及基板 92按照预定的背光扫描 设计对应分成多个分区， 图 9 中对应为分区 1 和分区 2 , 每个分区内的 LED间距 93小于该分区与其相邻分区之间的 LED间距 94。 基板 92可以 为柔性线路板或 PCB板等。
本发明 3D显示的背光模组的 LED灯条上 LED 的排布方式， 是根据 分区进行特殊设计， 主要特征表现为分区内的 LED 间距小于分区之间的 LED 间距。 分区内的 LED 间距， 可以是相同， 也可以是不同。 比如分区 中央的 LED间距最小， 越到分区的边缘 LED 间距越大。 图 9仅为一个示 意图 （只分了两区） ， 实际灯条上 LED的分区数目可以是任意的。
如图 10所示， 其为常用的 LED排布方式与本发明 LED灯条的 LED排 布方式的光型分布差异示意图。 图 10 中左侧 LED灯条 100 釆用了常用的 LED排布方式， 右侧为釆用本发明 LED排布方式的 3D显示的背光模组的 LED灯条 101。 上述两种排布方式对比， 有以下几点差异： LED灯条的分 区大小相同， 但本发明中针对分区进行 LED 间距的调整， 结果相同分区 大小内的有效发光宽度 WE ( Emission Width ) 不同， 本发明 LED灯条 101 的 WE2小于现有的 LED排布方式的 WE1 , WE2< WE1。 由于 LED相对排布密 度不同， 本发明的 LED灯条 101 的 LED的光场叠加后相对现有方式更加收 敛， 用半亮度宽度 ( FWHM ) 来比较， 本发明的 LED灯条 101 的 FWHM2 小于现有排布方式下的 FWHM FWHM2< FWHMl o
参见图 11 , 其为本发明 3D显示的背光模组第一较佳实施例的背光光 场交叠示意图。 该第一较佳实施例中， 3D显示的背光模组包括导光板 110 及 LED灯条 111 , LED灯条 111设于该导光板 110一短侧， 形成单短边入 光的背光模组。 LED灯条 111釆用了本发明 3D显示的背光模组的 LED灯 条的配置， 包括多个 LED及基板， LED 呈直线排列互相间隔固定在该基 板上， LED灯条 111 的 LED及基板按照预定的背光扫描设计对应分成四 个分区 1〜4 , 每个分区内的 LED 间距小于该分区与其相邻分区之间的 LED 间距。 不同灯条分区的光场分布使用不同线条来区分， 图中不同线条 (点划线、 虚线、 实线及点划线）代表不同分区单独点亮时， 二分之一分 区最大亮度的边界。 与图 7 中现有单短边入光的背光模组相比较， 本发明 背光模组的两个分区的交叠部分， 即交叉范围 （cross range ) , 明显减 小， 分区之间的串扰降低， 3D显示的效果得到提高。
参见图 12, 其为本发明 3D显示的背光模组第二较佳实施例的背光光 场交叠示意图。 该第二较佳实施例中， 3D显示的背光模组包括导光板 120 及两 LED灯条 121 , 两 LED灯条 121分别设于该导光板 120的相对两短 侧， 形成双短边入光的背光模组。 LED灯条 121也釆用了本发明 3D显示 的背光模组的 LED 灯条的配置， 按照预定的背光扫描设计对应分成四个 分区 1〜4, 每个分区内的 LED 间距小于该分区与其相邻分区之间的 LED 间距。 不同灯条分区的光场分布使用不同线条来区分， 图中不同线条（点 划线、 虚线、 实线及点划线）代表不同分区单独点亮时， 二分之一分区最 大亮度的边界。 与图 8 中现有双短边入光的背光模组相比较， 本发明背光 模组的两个分区的交叠部分， 即交叉范围 （cross range ) , 明显减小， 分 区之间的串扰降低， 3D显示的效果得到提高。
综上所述， 本发明的 3D显示的背光模组及其 LED灯条不同分区之间 的交叉范围会缩小， 扫描背光时不同分区之间的串扰减小， 3D 显示的效 果会得到提升。
以上所述， 对于本领域的普通技术人员来说， 可以根据本发明的技术 方案和技术构思作出其他各种相应的改变和变形， 而所有这些改变和变形 都应属于本发明后附的权利要求的保护范围。

Claims

权 利 要 求
1、 一种 3D显示的背光模组， 包括导光板及至少一 LED灯条， 所述 LED灯条设于该导光板一侧， 所述 LED灯条包括多个 LED及基板， 所述 LED呈直线排列互相间隔固定在该基板上， 所述 LED灯条的 LED及基板 按照预定的背光扫描设计对应分成多个分区， 每个分区内的 LED 间距小 于该分区与其相邻分区之间的 LED间距。
2、 如权利要求 1所述的 3D显示的背光模组， 其中， 包括一 LED灯 条， 该 LED灯条设于该导光板的一短侧。
3、 如权利要求 1所述的 3D显示的背光模组， 其中， 包括两 LED灯 条， 该两 LED灯条设于该导光板的相对两短侧。
4、 如权利要求 1所述的 3D显示的背光模组， 其中， 在每一分区中， 分区内的 LED间距相同或不同。
5、 如权利要求 4所述的 3D显示的背光模组， 其中， 所述分区内中央 的 LED间距最小， 从中央向边缘的 LED间距逐渐增大。
6、 如权利要求 1所述的 3D显示的背光模组， 其中， 所述基板为柔性 线路板或 PCB板。
7、 一种 3D显示的背光模组， 包括导光板及至少一 LED灯条， 所述 LED灯条设于该导光板一侧， 所述 LED灯条包括多个 LED及基板， 所述 LED呈直线排列互相间隔固定在该基板上， 所述 LED灯条的 LED及基板 按照预定的背光扫描设计对应分成多个分区， 每个分区内的 LED 间距小 于该分区与其相邻分区之间的 LED间距；
其中， 包括两 LED 灯条， 该两 LED 灯条设于该导光板的相对两短 侧；
其中， 在每一分区中， 分区内的 LED间距相同或不同；
其中， 所述分区内中央的 LED间距最小， 从中央向边缘的 LED间距 逐渐增大；
其中， 所述基板为柔性线路板或 PCB板。
8、 一种 3D显示的背光模组的 LED灯条， 包括多个 LED及基板， 所 述 LED呈直线排列互相间隔固定在该基板上， 所述 LED及基板按照预定 的背光扫描设计对应分成多个分区， 每个分区内的 LED 间距小于该分区 与其相邻分区之间的 LED间距。
9、 如权利要求 8所述的 3D显示的背光模组的 LED灯条， 其中， 在 每一分区中， 分区内的 LED间距相同或不同。
10、 如权利要求 8所述的 3D显示的背光模组的 LED灯条， 其中， 所 述分区内中央的 LED间距最小， 从中央向边缘的 LED间距逐渐增大。
11、 如权利要求 8所述的 3D显示的背光模组的 LED灯条， 其中， 所 述基板为柔性线路板或 PCB板。
PCT/CN2012/077808 2012-06-14 2012-06-28 3d显示的背光模组及其led灯条 WO2013185385A1 (zh)

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104465637A (zh) * 2014-10-29 2015-03-25 浙江英特来光电科技有限公司 一种新型led灯丝
CN105546393B (zh) * 2016-01-06 2018-06-19 深圳创维－Rgb电子有限公司 一种可减少垫块暗影的灯条、背光模组、显示器及电视
CN110010003B (zh) * 2019-03-06 2021-07-06 武汉华星光电半导体显示技术有限公司 一种柔性显示面板
TWI702427B (zh) * 2019-12-12 2020-08-21 台灣愛司帝科技股份有限公司 影像顯示器及其背光模組

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1753073A (zh) * 2004-09-23 2006-03-29 三星电子株式会社 发光装置、具有其的背光组件和具有背光组件的显示设备
CN101295100A (zh) * 2007-04-28 2008-10-29 瀚宇彩晶股份有限公司 液晶显示器及其背光模块
CN101375202A (zh) * 2005-12-16 2009-02-25 奥斯兰姆奥普托半导体有限责任公司 照明装置
CN101932968A (zh) * 2007-12-27 2010-12-29 三星Led株式会社 用于液晶显示装置的背光单元
CN202057827U (zh) * 2011-05-26 2011-11-30 京东方科技集团股份有限公司 导光板及背光模组
CN102483196A (zh) * 2009-08-31 2012-05-30 夏普株式会社 照明装置和显示装置
JP2012109227A (ja) * 2010-10-21 2012-06-07 Semiconductor Energy Lab Co Ltd バックライトユニット、表示装置及び電子機器

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008045681A1 (en) * 2006-10-06 2008-04-17 3M Innovative Properties Company Backlight modules for autostereoscopic 3d display devices and scanning backlights for lcd devices
CN102102824B (zh) * 2009-12-18 2013-06-19 Tcl集团股份有限公司 一种led背光模组、lcd显示面板及液晶电视
CN201654394U (zh) * 2010-04-29 2010-11-24 大连东显电子有限公司 一种分区背光显示装置
CN202141827U (zh) * 2011-07-25 2012-02-08 京东方科技集团股份有限公司 一种导光板、扫描背光模块及液晶显示器

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1753073A (zh) * 2004-09-23 2006-03-29 三星电子株式会社 发光装置、具有其的背光组件和具有背光组件的显示设备
CN101375202A (zh) * 2005-12-16 2009-02-25 奥斯兰姆奥普托半导体有限责任公司 照明装置
CN101295100A (zh) * 2007-04-28 2008-10-29 瀚宇彩晶股份有限公司 液晶显示器及其背光模块
CN101932968A (zh) * 2007-12-27 2010-12-29 三星Led株式会社 用于液晶显示装置的背光单元
CN102483196A (zh) * 2009-08-31 2012-05-30 夏普株式会社 照明装置和显示装置
JP2012109227A (ja) * 2010-10-21 2012-06-07 Semiconductor Energy Lab Co Ltd バックライトユニット、表示装置及び電子機器
CN202057827U (zh) * 2011-05-26 2011-11-30 京东方科技集团股份有限公司 导光板及背光模组

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