WO2016037375A1 - 灯条组件、背光模组以及液晶显示器 - Google Patents
灯条组件、背光模组以及液晶显示器 Download PDFInfo
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- the present invention relates to the field of liquid crystal display technologies, and more particularly to a light bar assembly, and to a backlight module using the light bar assembly and a liquid crystal display including the same.
- the liquid crystal display usually includes a liquid crystal panel and a backlight module.
- the liquid crystal panel is disposed opposite to the backlight module, and the backlight module provides a display light source to the liquid crystal panel to enable the liquid crystal panel to display an image.
- the backlight in the backlight module mainly uses an LED lamp.
- a light bar assembly in a backlight module of the prior art a plurality of LED lamps 3 used as a light source are assembled on the light source printed circuit board 2 to form a light bar 1 , and the light source printed circuit board 2
- the electrical connector 4 is also mounted on the same side of the light source printed circuit board 2, and the electrical connector 4 is connected to a power source 5 by a flexible flat cable (FFC) 6. .
- the power source 5 supplies a driving voltage to the LED lamp 3 in the light bar 1 through the flexible cable 6 through the electrical connector 4.
- each of the light bars 1 and the power source 5 are respectively connected by different flexible cables 6 by means of plugging, and the wires are easy to be skewed.
- the socket is damaged, and when a large number of flexible cables are used, more space is occupied, assembly is inconvenient, and the time and yield of product assembly are seriously affected.
- the height of the electrical connector 4 is generally higher than the height of the LED lamp 3, and therefore, when the light bar 1 is installed, a larger space is required, which is disadvantageous for realizing a liquid crystal display with a narrow bezel. the design of.
- the present invention provides a light bar assembly, which is applied to a backlight module, which reduces the process difficulty of product assembly, improves product yield and saves assembly. Time, reducing costs.
- a light bar assembly comprising:
- each light bar comprising a light source printed circuit board and a plurality of light sources mounted on the light source printed circuit board;
- a flexible printed circuit board comprising a flexible printed circuit board body portion and a gold hand guiding portion; wherein the flexible printed circuit board body portion is connected to the light source printed circuit board of all the light bars, and the gold hand guiding portion is connected to a power source,
- the power source supplies a driving voltage to the light bar through the flexible printed circuit board.
- the light bar assembly comprises two light strips;
- the flexible printed circuit board main body portion has an elongated structure, and both ends are respectively connected with a light source printed circuit board of a light bar, and the gold hand guides the portion from the The intermediate position of the main portion of the flexible printed wiring board is connected and taken out.
- the flexible printed circuit board main body portion is further connected with a plurality of the light sources, and a light bar structure is formed on the flexible printed circuit board main body portion.
- a plurality of the light sources are connected to the flexible printed circuit board main body portion by a surface mount process.
- the flexible printed circuit board main body portion is connected to the light source printed circuit board by a hot pressing process.
- the light source is an LED lamp.
- a backlight module including a backlight and a light guide plate, the backlight being located at a side of the light guide plate, wherein the backlight includes the light bar assembly as described above.
- the present invention also provides a liquid crystal display device including a liquid crystal panel and a backlight module, the liquid crystal panel is disposed opposite to the backlight module, and the backlight module provides a display light source to the liquid crystal panel to The liquid crystal panel displays an image, wherein the backlight module is the foregoing backlight module.
- the plurality of light bars can be connected to the power source by using the same flexible printed circuit board, and the power supply directly supplies the driving voltage to the light bar through the flexible printed circuit board.
- the use of the wire harness is reduced; and the electrical connector is no longer used in the light bar assembly, and the flexible printed circuit board is directly combined with the light source printed circuit board, which reduces the process difficulty of product assembly and improves the yield of the product. Saves assembly time and reduces costs.
- due to the wiring harness The reduction in the amount of use and the elimination of the use of electrical connectors make the light bar assembly occupy a small assembly space, which is advantageous for the design of a liquid crystal display with a narrow bezel.
- FIG. 1 is a schematic structural view of a light bar assembly in a conventional backlight module.
- FIG. 2 is a schematic structural diagram of a backlight module and a liquid crystal display according to an embodiment of the present invention.
- FIG. 3 is a schematic structural diagram of a light bar assembly according to an embodiment of the present invention.
- FIG. 4 is a schematic structural view of a light bar assembly according to another embodiment of the present invention.
- the present invention is directed to a drawback of the prior art, and provides a light bar assembly including two or more light bars and flexible printed circuit boards (FPC).
- each of the light strips comprises a light source printed circuit board and a plurality of light sources mounted on the light source printed circuit board;
- the flexible printed circuit board comprises a flexible printed circuit board main body portion and a Goiden Finger lead-out portion.
- the flexible printed circuit board main body portion is connected to the light source printed circuit board of all the light bars, the gold hand guiding portion is connected to a power source, and the power source supplies a driving voltage to the light bar through the flexible printed circuit board .
- the light bar assembly provided above is applied to the backlight module. Since the plurality of light bars can be connected to the power source by using the same flexible printed circuit board, the power supply directly supplies the driving voltage to the light bar through the flexible printed circuit board, thereby reducing the amount of wire harness used. Moreover, the electrical connector is no longer used in the light bar assembly, and the flexible printed circuit board is directly combined with the light source printed circuit board, which reduces the process difficulty of product assembly, improves product yield and saves assembly time and reduces The cost.
- FIG. 2 is a schematic structural diagram of a backlight module and a liquid crystal display provided by the embodiment.
- the liquid crystal display includes a liquid crystal panel 100 and a backlight module 200 .
- the liquid crystal panel 100 is disposed opposite to the backlight module 200 , and the backlight module 200 provides a display light source to the liquid crystal panel 100 .
- the liquid crystal panel 100 is caused to display an image.
- the backlight module 200 includes a back plate 203, a reflection sheet 204, a light guide plate 202, and an optical film group 205 which are sequentially stacked, and further includes a side backlight 201 located on the light guide plate 202.
- the light emitted by the backlight 201 is incident on the light guide plate 202 from the light
- the diaphragm group 205 is conducted out and incident on the liquid crystal panel 100.
- the backlight 201 comprises a light bar assembly.
- the light bar assembly includes two light bars 10 (in other embodiments, more light bars may be provided) and the flexible printed circuit board 20.
- Each of the light bars 10 includes a light source printed circuit board 11 and a plurality of light sources 12 mounted on the light source printed circuit board 11.
- the light source 12 is an LED light.
- the flexible printed circuit board 20 includes a flexible printed circuit board main body portion 21 and a gold hand guiding portion 22.
- the flexible printed wiring board main body portion 21 has an elongated structure with its two ends respectively associated with a light source of the light bar 10.
- the printed circuit board 11 is connected, and the gold hand indicating portion 22 is connected from the intermediate position of the flexible printed wiring board main body portion 21 to be connected to the power source 30.
- the power source 30 supplies a driving voltage to the light bar 10 through the flexible printed circuit board 20.
- the flexible printed circuit board main body portion 21 and the light source printed circuit board 11 are directly connected by hot pressing, and it is no longer necessary to provide an additional electrical connector on the light source printed circuit board 11.
- the light bar assembly includes two light bars 10 and a flexible printed circuit board 20.
- Each of the light bars 10 includes a light source printed circuit board 11 and a plurality of light sources 12 mounted on the light source printed circuit board 11.
- the light source 12 is an LED light.
- the flexible printed circuit board 20 includes a flexible printed circuit board main body portion 21 and a gold hand guiding portion 22.
- the flexible printed wiring board main body portion 21 has an elongated structure with its two ends respectively associated with a light source of the light bar 10.
- the printed circuit board 11 is connected, and the gold hand indicating portion 22 is connected from the intermediate position of the flexible printed wiring board main body portion 21 to be connected to the power source 30.
- a plurality of light sources 12 are connected to the flexible printed wiring board main body portion 21 by a Surface Mounting Technology (SMT), and the light strip structure 40 is formed in the flexible printed wiring board main body portion 21, in a small More light sources 12 can be assembled in the space.
- the power source 30 provides a driving voltage to the light bar 10 and the light bar structure 40 through the flexible printed circuit board 20.
- the plurality of light bars can be connected to the power source by using the same flexible printed circuit board, and the power source directly passes the flexible printed circuit board to the light.
- the strip provides driving voltage, which reduces the amount of wire harness used; and the electrical connector is no longer used in the light bar assembly, and the flexible printed circuit board is directly combined with the light source printed circuit board, which reduces the process difficulty of product assembly and improves the process. Product yield and saves assembly time and costs.
- the light bar assembly occupies less assembly space, which is advantageous for the design of the liquid crystal display with a narrow bezel.
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Abstract
一种灯条组件，包括：两个以上灯条（10），每一灯条（10）包括光源印刷电路板（11）以及安装于该光源印刷电路板上（11）的多个光源（12）；柔性印刷电路板（20），包括柔性印刷线路板主体部分（21）和金手指引出部分（22）；其中，柔性印刷线路板主体部分（21）与所有灯条（10）的光源印刷电路板（11）连接，金手指引出部分（22）与一电源（30）连接，电源（30）通过柔性印刷电路板（20）向灯条（10）提供驱动电压。还提供了采用该灯条组件的背光模组（200）以及包含该背光模组（200）的液晶显示器。灯条组件以及采用该灯条组件的背光模组（200）中，减少了线束的使用量，并且柔性印刷线路板（20）直接与光源印刷电路板（11）热压结合，不再使用电连接器，降低了产品组装的工艺难度，提高了产品的良率并节省了组装时间，降低了成本。
Description
本发明涉及液晶显示器技术领域，尤其是一种灯条组件，还涉及采用该灯条组件的背光模组以及包含该背光模组的液晶显示器。
液晶显示器通常包括液晶面板以及背光模组，液晶面板与背光模组相对设置，由背光模组提供显示光源给液晶面板，以使液晶面板显示影像。
由于LED灯具有优良的特性，例如低功耗、长寿命、优良的颜色再现特性以及对比度等等，现有的液晶显示器中，背光模组中的背光源主要采用LED灯。如图1所示，现有技术中的一种背光模组中的灯条组件，被用作光源的多个LED灯3装配在光源印刷电路板2上形成灯条1，光源印刷电路板2上还装配有电连接器4，LED灯3与电连接器4位于光源印刷电路板2上的同一侧，电连接器4由软性排线(Flexible Flat Cable，FFC)6连接到一电源5。电源5通过软性排线6经过电连接器4向灯条1中的LED灯3提供驱动电压。
在一些背光模组中需要使用对个灯条，而以上结构的灯条组件中，每一灯条1与电源5分别由不同的软性排线6通过插接的方式连接，线材歪斜时容易造成插口损坏，并且当使用较多数量的软性排线，占用较多的空间，组装不方便，严重影响产品组装的时间和良率。另外，在以上结构的灯条组件中，电连接器4的高度通常高于LED灯3的高度，因此，在安装灯条1时，需要占用更大的空间，不利于实现窄边框的液晶显示器的设计。
发明内容
为了解决上述现有技术所存在的问题，本发明提供了一种灯条组件，该灯条组件应用于背光模组中，降低了产品组装的工艺难度，提高了产品的良率并节省了组装时间，降低了成本。
为了实现上述目的，本发明采用了如下的技术方案：
一种灯条组件，包括：
两个以上灯条，每一灯条包括光源印刷电路板以及安装于该光源印刷电路板上的多个光源；
柔性印刷电路板，包括柔性印刷线路板主体部分和金手指引出部分；其中，所述柔性印刷线路板主体部分与所有灯条的光源印刷电路板连接，所述金手指引出部分与一电源连接，所述电源通过所述柔性印刷电路板向所述灯条提供驱动电压。
其中，所述灯条组件包括两个灯条；所述柔性印刷线路板主体部分呈长条状结构，两端分别与一个灯条的光源印刷电路板连接，所述金手指引出部分从所述柔性印刷线路板主体部分的中间位置连接引出。
其中，所述柔性印刷线路板主体部分还连接有多个所述光源，在所述柔性印刷线路板主体部分形成灯条结构。
其中，采用表面贴片工艺将多个所述光源连接于所述柔性印刷线路板主体部分。
其中，采用热压工艺将所述柔性印刷线路板主体部分与光源印刷电路板连接。
其中，所述光源为LED灯。
本发明的另一方面是提供一种背光模组，包括背光源以及导光板，所述背光源位于所述导光板的一侧面，其中，所述背光源包括如上所述的灯条组件。
本发明的还提供了一种液晶显示装置，包括液晶面板及背光模组，所述液晶面板与所述背光模组相对设置，所述背光模组提供显示光源给所述液晶面板，以使所述液晶面板显示影像，其中，所述背光模组为前述的背光模组。
本发明实施例提供的灯条组件以及采用该灯条组件的背光模组中，多个灯条可以使用同一柔性印刷线路板与电源连接，电源通过柔性印刷电路板直接向灯条提供驱动电压，减少了线束的使用量；并且，该灯条组件中不再使用电连接器，柔性印刷线路板直接与光源印刷电路板热压结合，降低了产品组装的工艺难度，提高了产品的良率并节省了组装时间，降低了成本。另外，由于线束
的用量的减少以及不再使用电连接器，使得该灯条组件占用较小的组装空间，有利于实现窄边框的液晶显示器的设计。
图1是现有的一种背光模组中的灯条组件的结构示意图。
图2是本发明实施例提供的背光模组以及液晶显示器的结构示意图。
图3是本发明实施例提供的灯条组件的结构示意图。
图4是本发明另一实施例提供的灯条组件的结构示意图。
如前所述，本发明针对现有技术存在的缺陷，提供了一种灯条组件，该灯条组件包括两个以上灯条(Light-Bar)以及柔性印刷电路板(Flexible Printing Circuits，FPC)。其中，每一灯条包括光源印刷电路板以及安装于该光源印刷电路板上的多个光源；柔性印刷电路板包括柔性印刷线路板主体部分和金手指(Goiden Finger)引出部分。其中，所述柔性印刷线路板主体部分与所有灯条的光源印刷电路板连接，所述金手指引出部分与一电源连接，所述电源通过所述柔性印刷电路板向所述灯条提供驱动电压。
如上提供的灯条组件并应用于背光模组中，由于多个灯条可以使用同一柔性印刷线路板与电源连接，电源通过柔性印刷电路板直接向灯条提供驱动电压，减少了线束的使用量；并且，该灯条组件中不再使用电连接器，柔性印刷线路板直接与光源印刷电路板热压结合，降低了产品组装的工艺难度，提高了产品的良率并节省了组装时间，降低了成本。
为了更好地阐述本发明的技术特点和结构，以下结合实施例及其附图进行详细描述。
图2为本实施例提供的背光模组以及液晶显示器的结构示意图。如图2所示，该液晶显示器包括液晶面板100及背光模组200，所述液晶面板100与所述背光模组200相对设置，所述背光模组200提供显示光源给所述液晶面板100，以使所述液晶面板100显示影像。其中，背光模组200包括依次叠层设置的背板203、反射片204、导光板202和光学膜片组205，还包括位于导光板202的一侧面背光源201。所述背光源201发出的光入射到所述导光板202后从所述光
学膜片组205传导出去，入射到所述液晶面板100。
其中，背光源201包括灯条组件。具体地，本实施例中，如图3所示，该灯条组件包括两个灯条10(在另外的一些实施例中，也可以设置有更多的灯条)以及柔性印刷电路板20。每一灯条10包括光源印刷电路板11以及安装于该光源印刷电路板11上的多个光源12，在本实施例中，光源12为LED灯。柔性印刷电路板20包括柔性印刷线路板主体部分21和金手指引出部分22，在本实施例中，柔性印刷线路板主体部分21呈长条状结构，其两端分别与一个灯条10的光源印刷电路板11连接，所述金手指引出部分22从所述柔性印刷线路板主体部分21的中间位置连接引出再与电源30连接。所述电源30通过所述柔性印刷电路板20向所述灯条10提供驱动电压。
其中，柔性印刷线路板主体部分21与光源印刷电路板11之间直接通过热压的方式连接，不再需要在光源印刷电路板11设置另外的电连接器。
在另外一个较为优选的实施例中，如图4所示，与以上实施例提供的类似，该灯条组件包括两个灯条10以及柔性印刷电路板20。每一灯条10包括光源印刷电路板11以及安装于该光源印刷电路板11上的多个光源12，在本实施例中，光源12为LED灯。柔性印刷电路板20包括柔性印刷线路板主体部分21和金手指引出部分22，在本实施例中，柔性印刷线路板主体部分21呈长条状结构，其两端分别与一个灯条10的光源印刷电路板11连接，所述金手指引出部分22从所述柔性印刷线路板主体部分21的中间位置连接引出再与电源30连接。进一步地，采用表面贴片工艺(Surface Mounting Technology，SMT)将多个光源12连接于柔性印刷线路板主体部分21，在所述柔性印刷线路板主体部分21形成灯条结构40，在较小的空间内可以组装更多的光源12。所述电源30通过所述柔性印刷电路板20向所述灯条10以及灯条结构40提供驱动电压。
综上所述，本发明实施例提供的灯条组件以及采用该灯条组件的背光模组中，多个灯条可以使用同一柔性印刷线路板与电源连接，电源通过柔性印刷电路板直接向灯条提供驱动电压，减少了线束的使用量；并且，该灯条组件中不再使用电连接器，柔性印刷线路板直接与光源印刷电路板热压结合，降低了产品组装的工艺难度，提高了产品的良率并节省了组装时间，降低了成本。另外，由于线束的用量的减少以及不再使用电连接器，使得该灯条组件占用较小的组装空间，有利于实现窄边框的液晶显示器的设计。
需要说明的是，在本文中，诸如第一和第二等之类的关系术语仅仅用来将
一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
显然，本发明的保护范围并不局限于上诉的具体实施方式，本领域的技术人员可以对发明进行各种改动和变型而不脱离本发明的精神和范围。这样，倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。
Claims (18)
- 一种灯条组件，其中，包括：两个以上灯条，每一灯条包括光源印刷电路板以及安装于该光源印刷电路板上的多个光源；柔性印刷电路板，包括柔性印刷线路板主体部分和金手指引出部分；其中，所述柔性印刷线路板主体部分与所有灯条的光源印刷电路板连接，所述金手指引出部分与一电源连接，所述电源通过所述柔性印刷电路板向所述灯条提供驱动电压。
- 根据权利要求1所述的灯条组件，其中，所述灯条组件包括两个灯条；所述柔性印刷线路板主体部分呈长条状结构，其两端分别与一个灯条的光源印刷电路板连接，所述金手指引出部分从所述柔性印刷线路板主体部分的中间位置连接引出。
- 根据权利要求2所述的灯条组件，其中，所述柔性印刷线路板主体部分还连接有多个所述光源，在所述柔性印刷线路板主体部分形成灯条结构。
- 根据权利要求3所述的灯条组件，其中，采用表面贴片工艺将多个所述光源连接于所述柔性印刷线路板主体部分。
- 根据权利要求1所述的灯条组件，其中，采用热压工艺将所述柔性印刷线路板主体部分与光源印刷电路板连接。
- 根据权利要求1所述的灯条组件，其中，所述光源为LED灯。
- 一种背光模组，包括背光源以及导光板，所述背光源位于所述导光板的一侧面，其中，所述背光源包括灯条组件，所述灯条组件包括：两个以上灯条，每一灯条包括光源印刷电路板以及安装于该光源印刷电路板上的多个光源；柔性印刷电路板，包括柔性印刷线路板主体部分和金手指引出部分；其中，所述柔性印刷线路板主体部分与所有灯条的光源印刷电路板连接，所述金手指引出部分与一电源连接，所述电源通过所述柔性印刷电路板向所述灯条提供驱动电压。
- 根据权利要求7所述的背光模组，其中，所述灯条组件包括两个灯条；所述柔性印刷线路板主体部分呈长条状结构，其两端分别与一个灯条的光源印刷电路板连接，所述金手指引出部分从所述柔性印刷线路板主体部分的中间位置连接引出。
- 根据权利要求8所述的背光模组，其中，所述柔性印刷线路板主体部分还连接有多个所述光源，在所述柔性印刷线路板主体部分形成灯条结构。
- 根据权利要求9所述的背光模组，其中，采用表面贴片工艺将多个所述光源连接于所述柔性印刷线路板主体部分。
- 根据权利要求7所述的背光模组，其中，采用热压工艺将所述柔性印刷线路板主体部分与光源印刷电路板连接。
- 根据权利要求7所述的背光模组，其中，所述光源为LED灯。
- 一种液晶显示器，包括液晶面板及背光模组，所述液晶面板与所述背光模组相对设置，所述背光模组提供显示光源给所述液晶面板，以使所述液晶面板显示影像，其中，所述背光模组包括背光源以及导光板，所述背光源位于所述导光板的一侧面，其中，所述背光源包括灯条组件，所述灯条组件包括：两个以上灯条，每一灯条包括光源印刷电路板以及安装于该光源印刷电路板上的多个光源；柔性印刷电路板，包括柔性印刷线路板主体部分和金手指引出部分；其中，所述柔性印刷线路板主体部分与所有灯条的光源印刷电路板连接，所述金手指引出部分与一电源连接，所述电源通过所述柔性印刷电路板向所述灯条提供驱动电压。
- 根据权利要求13所述的液晶显示器，其中，所述灯条组件包括两个灯条；所述柔性印刷线路板主体部分呈长条状结构，其两端分别与一个灯条的光源印刷电路板连接，所述金手指引出部分从所述柔性印刷线路板主体部分的中间位置连接引出。
- 根据权利要求14所述的液晶显示器，其中，所述柔性印刷线路板主体部分还连接有多个所述光源，在所述柔性印刷线路板主体部分形成灯条结构。
- 根据权利要求15所述的液晶显示器，其中，采用表面贴片工艺将多个所述光源连接于所述柔性印刷线路板主体部分。
- 根据权利要求13所述的液晶显示器，其中，采用热压工艺将所述柔性印刷线路板主体部分与光源印刷电路板连接。
- 根据权利要求13所述的液晶显示器，其中，所述光源为LED灯。
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