WO2020007184A1 - 背光模组及显示终端 - Google Patents

背光模组及显示终端 Download PDF

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Publication number
WO2020007184A1
WO2020007184A1 PCT/CN2019/091343 CN2019091343W WO2020007184A1 WO 2020007184 A1 WO2020007184 A1 WO 2020007184A1 CN 2019091343 W CN2019091343 W CN 2019091343W WO 2020007184 A1 WO2020007184 A1 WO 2020007184A1
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WO
WIPO (PCT)
Prior art keywords
backlight module
wiring
back plate
board
light
Prior art date
Application number
PCT/CN2019/091343
Other languages
English (en)
French (fr)
Inventor
唐志强
韩建国
马骥
陈宇
Original Assignee
青岛海信电器股份有限公司
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
Priority claimed from CN201810724734.2A external-priority patent/CN108732822A/zh
Priority claimed from CN201821054388.3U external-priority patent/CN208569252U/zh
Application filed by 青岛海信电器股份有限公司 filed Critical 青岛海信电器股份有限公司
Priority to US16/563,134 priority Critical patent/US11150510B2/en
Publication of WO2020007184A1 publication Critical patent/WO2020007184A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133603—Direct backlight with LEDs
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133608—Direct backlight including particular frames or supporting means
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133612—Electrical details

Definitions

  • Ultra-thin and beautiful LCD TVs are widely used.
  • the pursuit of ultra-thin and beautiful appearance has become the goal of various manufacturers.
  • How to make ultra-thin and beautiful LCD TVs has become a problem for manufacturers.
  • an embodiment of the present application discloses a display terminal including the backlight module according to the first aspect, and a display panel disposed in a light emitting direction of the backlight module.
  • FIG. 1 is a schematic structural diagram of some direct-type LCD televisions
  • FIG. 2 is a schematic structural diagram of a backlight module according to an embodiment of the present application.
  • FIG. 5 is a schematic diagram of a second surface of a light board in a backlight module according to an embodiment of the present application
  • FIG. 6 is a schematic structural diagram of a back plate in a backlight module according to an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a composite backplane in a backlight module according to an embodiment of the present application.
  • FIG. 8 is an assembly schematic diagram of a composite back plate and a light plate in a backlight module according to an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a light board in another backlight module according to an embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of a back plate in another backlight module according to an embodiment of the present application.
  • FIG. 12 is a schematic structural diagram of a display terminal according to an embodiment of the present application.
  • FIG. 1 is a schematic structural diagram of some direct type LCD TVs.
  • the direct type LCD TV includes a backlight module, a liquid crystal panel 70 disposed in a light emitting direction of the backlight module, and a plastic frame 60 and a front frame 80 for sandwiching the liquid crystal panel 70.
  • the backlight module includes a back plate 10, a reflection sheet 30, a diffusion plate 40, a film 50, and the like.
  • the back plate 1 is provided with a light board driving module and a plurality of light strip boards 20.
  • the light strip board 20 is electrically connected to the light board drive module through a wiring terminal, and the light board drive module is used to drive and control the light bar board to control the light bar board 20 to be turned on or off.
  • the light board driving module controls the light bar board 20 to emit light, and then the light becomes uniform after passing through the diffusion plate 40 and the membrane 50, and then uniformly irradiates the liquid crystal panel 70, thereby achieving the function of illuminating the liquid crystal display device.
  • the diameter of light emitting diodes can be 1mm and the height is 0.5mm.
  • the size of the wiring terminal is larger than the size of the lamp, and the size of the wiring terminal becomes a factor limiting the thickness of the backlight module.
  • the brightness / color gamut / division number requirements are higher, resulting in higher product power, which in turn leads to a larger number of lamp boards and a larger area of the lamp board drive module.
  • backplane is a single-layer metal structure
  • large-size backplanes need to be reinforced with ribs to ensure the strength.
  • Circuit traces must be outside the backplane. If a TV set is provided with ribs and the circuit traces are exposed, the appearance is poor.
  • an embodiment of the present application provides a backlight module.
  • the backlight module includes wiring terminals and LED lights on two opposite surfaces of the light board, which can reduce circuit wiring on the backplane, thereby increasing The appearance area of the large back plate allows the back plate to be directly exposed and used as a back shell to reduce the thickness of the backlight module.
  • the backlight module includes a light plate 2, and the light plate 2 includes a first surface 23 and a second surface 24.
  • the first surface 23 and the second surface 24 are opposite surfaces of the lamp plate 2.
  • the first surface 23 is provided with an LED lamp 21.
  • the LED lamps 21 are arranged in an array on the first surface 23.
  • the second surface 24 is provided with a wiring terminal 4, and the LED lamp 21 is electrically connected to the wiring terminal 4.
  • the wiring terminal 4 is also used to electrically connect to an external module. Specifically, the wiring terminal 4 is electrically connected to the LED lamp 21, and the wiring terminal 4 is electrically connected to the lamp board driving module on the outside of the lamp board 2 through a circuit wiring, and the lamp board driving module is used to drive and control the LED lamp 21, that is, Used to control the on / off of the LED light.
  • the backlight module provided in the embodiment of the present application further includes a back plate 1, as shown in FIG. 2, the back plate 1 is located on the second surface 24 side of the light plate 2, and an avoiding structure corresponding to the wiring terminal 4 is provided on the back plate 1.
  • the wiring terminal 4 is located in the avoidance structure.
  • the arrangement of the avoidance structure reduces the thickness of the backlight module.
  • the avoidance structure is a groove structure.
  • the backplane 1 is further provided with a wiring groove 14.
  • the wiring groove 14 is used for placing the connection wiring of the wiring terminal 4 for external connection.
  • the wiring terminal 4 is electrically connected to the light board driving module on the backplane 1 through the connecting wiring, and the connection wiring is placed in the wiring groove 14, thereby regulating the connection between the wiring terminal 4 and the light board driving module.
  • the connection wiring reduces the assembly gap between the back plate 1 and the light plate 2.
  • the back plate 1 has a one-layer structure.
  • a reinforcing rib may be provided inside the back plate 1, and the position of the reinforcing rib avoids the position of the avoidance structure 13 and the wiring groove 14.
  • the back plate 1 may be made of a stronger metal material.
  • the back plate 1 is a two-layer composite structure. As shown in FIGS. 7 and 8, the back plate 1 includes an exterior back plate 11 and an inner back plate 12 fixed on the exterior back plate 11.
  • the inner back plate 12, that is, the wiring terminal 4 is housed in an avoiding structure on the inner back plate 12.
  • the avoidance structure on the inner back plate 12 is an opening structure or a groove structure. For the convenience of processing, the opening structure is punched out on the inner back plate to form an avoidance structure.
  • the internal backplane 12 can also be provided with a wiring structure.
  • the wiring structure is used to place the connection wiring of the wiring terminal 4 for external connection, that is, the connection wiring between the wiring terminal 4 and the lamp board driving module is set in the wiring structure.
  • the connection traces are housed in the trace structure on the internal backplane 12 to standardize the connection traces and avoid the disorderly arrangement of the connection traces on the backplane 1. This solves the problem caused by the connection traces being placed outside the exterior backplane 11. The appearance is not good enough, which is helpful to reduce the assembly gap between the inner back plate 12 and the light plate 2.
  • the wiring structure is a slot structure or an open structure.
  • the thickness of the internal backplane 12 ranges from 1.0mm to 4.0mm. This thickness allows an avoidance structure and a wiring structure with a certain depth to be opened on the internal backplane 12 to ensure the wiring terminal 4 and the connection wiring. It can be completely placed inside the inner back plate 12.
  • the inner back plate 12 may be made of a light-weight plate with a relatively thick thickness, such as an aluminum-plastic plate, a steel-plastic plate, a honeycomb plate, and the like. After the thickness of the lightweight board is increased, the weight is lighter than ordinary metal materials, and it is easy to process and install.
  • the inner back plate 12 may also be a relatively thin sheet metal plate, and a convex bump is punched out from the sheet metal plate to avoid the escape of the wiring terminal 4 and the connection wiring.
  • the backplane 1 in the embodiment of the present application has higher strength than the traditional backplane, and The appearance of the back plate 11 does not need to be separately reinforced.
  • the back plate 1 is a three-layer composite structure, one layer structure is an internal back plate, ie, an internal metal layer, one layer structure is a sandwich, and one layer is an appearance back plate, which is an appearance metal layer.
  • the avoidance structure and the wiring structure are disposed on the internal metal layer, so that the wiring terminal 4 and the connection wiring are located in the internal metal layer.
  • a plurality of avoidance structures 13 are correspondingly provided on the back plate.
  • the plurality of avoiding structures 13 are arranged in two rows in the width direction of the back plate 1, and are arranged at intervals along the length direction of the back plate 1.
  • the wiring terminal 4 is located at one end of the light board 2. Since the wiring connected to the external connection of the wiring terminal 4 has a certain resistance, the length of the wiring affects the magnitude of the voltage drop.
  • the starting end of the wiring slot 14 is located at the adjacent two ends of the two avoiding structures 13 arranged along the width direction of the back plate 1, that is, the wiring terminals 4 are located at the two adjacent ends of the light plate 2 respectively.
  • the lengths of the wiring grooves 14 corresponding to each of the lamp boards 2 are substantially the same, thereby ensuring that the voltage drop of each of the wires is substantially the same, so that the LED lamps of each lamp board emit light uniformly.
  • the backlight module provided in the embodiment of the present application includes a light plate and a back plate.
  • the first surface of the lamp board is provided with LED lamps arranged in an array, and the second surface of the lamp board is provided with wiring terminals of the LED lamp.
  • the LED lamps and the wiring terminals are electrically connected, and the wiring terminals are used for external electrical connection.
  • the back plate is located on the second surface side of the light board.
  • the back plate is provided with an avoidance structure corresponding to the wiring terminal.
  • the wiring terminal is located in the avoidance structure.
  • the back plate is also provided with a wire routing slot. The connection terminal of the wire terminal for external connection.
  • the backlight module provided in this application sets the wiring terminals of the LED light in the backplane, and provides a avoidance structure and a wiring groove on the backplane.
  • the wiring terminals are embedded in the avoidance structure, and the connection wiring is placed in the wiring groove.
  • the connection wiring is arranged on the second surface of the lamp board, and the connection wiring between the wiring terminal and the lamp board driving module on the back board is embedded in the wiring groove, which is standardized.
  • the arrangement of the connecting traces effectively reduces the assembly gap between the lamp board and the back board, and effectively reduces the overall thickness of the backlight module.
  • the backlight module includes a light board 2.
  • the first surface 23 of the light board 2 is provided with LED lamps 21 arranged in an array, and the second surface 24 is provided with a The wire terminal 4 and the lamp board driving module 22.
  • the LED lamp 21 is electrically connected to the lamp board driving module 22 through the wiring terminal 4.
  • the wiring terminal 4 and the light board driving module 22 are simultaneously disposed on the second surface 24 of the light board 2, and the integration of the LED lamp 21 with the wiring terminal 4 and the light board driving module 22 is realized.
  • the wiring terminal 4 on the second surface 24 is electrically connected to the LED lamp 21 on the first surface 23;
  • the lamp board driving module 22 on the second surface 24 is electrically connected to the wiring terminal 4 on the same surface.
  • the above-mentioned integrated structure eliminates the lamp board driving module on the back board, which can reduce the number of circuit wiring and function boards (driving modules that control each lamp board, connect the lamp board and the power board) on the back board, thereby reducing functions.
  • the area ratio of the plate on the back plate can increase the appearance area of the back plate.
  • the back plate can be used as a back shell. There is no need to cover the back shell on the back plate, which can greatly reduce the thickness of the backlight module.
  • the backlight module provided in this application further includes a back plate 1, which is located on the second surface 24 side of the light plate 2.
  • the back plate 1 is provided with a light board driving module 22 and a wiring terminal. 4 avoidance structure, the wiring terminal 4 and the lamp board driving module 22 are located in the avoidance structure, so that the wiring terminal 4 and the lamp board driving module 22 are housed on the back plate 1.
  • the avoidance structure is a groove structure.
  • the light board driving module is integrated on the back of the light board, there is no need to occupy the space outside the back plate to assemble the light board driving module.
  • the technical solution can be realized only by a small rear case, and the TV is thin and beautiful.
  • the backplane 1 is also provided with a wiring slot 14.
  • the wiring slot 14 is used to place a connection wiring for the external connection of the wiring terminal 4, that is, a connection wiring for the external connection of the wiring terminal 4 on the second surface 24 of the light board 2. It can be embedded in the wiring groove 14 to hide the connection wiring in the back plate 1 to further reduce the assembly gap between the back plate 1 and the light plate 2.
  • the back plate 1 may be a one-layer structure or a two-layer composite structure, that is, the back plate 1 includes an appearance back plate 11 and an inner back plate 12 fixed on the appearance back plate 11 to avoid the structure located inside
  • the back plate 12, that is, the wiring terminal 4 and the light board driving module 22 are housed in an avoiding structure on the inner back plate 12.
  • the avoidance structure on the inner back plate 12 is an open structure or a groove structure. For the convenience of processing, the open structure is punched out on the inner back plate to form the avoidance structure.
  • the internal backplane 12 can also be provided with a wiring structure.
  • the wiring structure is used to place the connection wiring for the external connection of the wiring terminal 4, that is, the connection wiring for the external connection of the wiring terminal 4 is set in the wiring structure, and the connection The wires are housed in the routing structure on the internal backplane 12, which can regulate the connection wiring, avoid the disorderly arrangement of the connection wiring on the backplane 1, and solve the insufficient appearance caused by the connection wiring placed outside the exterior backplane 11. Aesthetic issues.
  • the wiring structure is a slot structure or an open structure.
  • backlight boards 2 are also used in the backlight module provided in the embodiment of the present application to meet the number of LED lamps currently used in the backlight module. Accordingly, as shown in FIG. 11, a plurality of avoidance structures 13 are correspondingly provided on the back plate. The positions of the wiring terminals of the lamp board 2 and the corresponding wiring grooves are set in the same manner as in the foregoing embodiment, and details are not described herein again.
  • the backlight module provided in the embodiment of the present application sets the LED lamp, the wiring terminal, and the lamp board driving module on the lamp board, so that the LED lamp is integrated with the wiring terminal and the lamp board driving module, and the lamp board driving module is no longer located on the back On the board, the area ratio of the function board on the back board is greatly reduced, and the area of the back board that can be used as an appearance is increased. In this way, the back board can be directly exposed and used as the back shell. The appearance of high-end machines is beautiful.
  • the wiring terminals and the light board driving module are housed in an avoiding structure on the back plate, which reduces the space occupied by the connection wiring between the light board and the back plate, thereby greatly reducing the thickness of the backlight module and realizing the television. Thin.
  • the embodiment of the present application further provides a display terminal.
  • the display terminal includes the above-mentioned backlight module and a display disposed in a light emitting direction of the backlight module.
  • Panel 3 the backlight module includes the wiring terminal, the LED lamp 21 and the light board driving module 22 on the light board 2 while reducing the area of the driving board on the back plate 1 so that the back plate can be directly exposed as a rear The case is used, and the display terminal does not need a rear case, thereby reducing the overall thickness of the display terminal and achieving thinness of the television.

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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)

Abstract

一种背光模组及显示终端，其中背光模组包括灯板（2）、LED灯（21）和走线端子（4），灯板（2）包括第一表面（23）和与第一表面（23）相对的第二表面（24），LED灯（21）阵列排布在第一表面（23）上，走线端子（4）设置在第二表面（24）上，且与LED灯（21）电连接，从而减少背板（1）上电路走线，增大背板（1）的外观区域，减小背光模组的厚度。

Description

背光模组及显示终端
相关申请的交叉引用
本专利申请要求于2018年7月4日提交的、申请号为201821054388.3，和2018年7月4日提交的、申请号为201810724734.2的中国专利申请的优先权，这些申请的全文以引用的方式并入本文中。
技术领域
本申请涉及液晶电视技术领域，尤其涉及一种背光模组及显示终端。
背景技术
超薄美观的液晶电视受到广泛的使用。追求超薄美观的外观成为各厂家的目标。如何制造出超薄美观的液晶电视成为各厂家需要解决的问题。
发明内容
第一方面，本申请实施例公开了一种背光模组，包括：灯板、发光二极管LED灯和走线端子。灯板包括第一表面和与所述第一表面相对的第二表面。LED灯阵列排布在所述第一表面上。走线端子设置在所述第二表面上，并与所述LED灯电连接。
第二方面，本申请实施例公开了一种显示终端，包括第一方面所述的背光模组、和设置于所述背光模组的出光方向上的显示面板。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，并不能限制本申请。
附图说明
为了更清楚地说明本申请的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，对于本领域普通技术人员而言，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为一些直下式液晶电视的结构示意图；
图2为本申请实施例提供的一种背光模组的结构示意图；
图3为本申请实施例提供的一种背光模组中灯板的结构示意图；
图4为本申请实施例提供的一种背光模组中灯板的第一表面示意图；
图5为本申请实施例提供的一种背光模组中灯板的第二表面示意图；
图6为本申请实施例提供的一种背光模组中背板的结构示意图；
图7为本申请实施例提供的一种背光模组中复合背板的结构示意图；
图8为本申请实施例提供的一种背光模组中复合背板与灯板的装配示意图；
图9为本申请实施例提供的另一种背光模组中灯板的结构示意图；
图10为本申请实施例提供的另一种背光模组中灯板的第二表面示意图；
图11为本申请实施例提供的另一种背光模组中背板的结构示意图；
图12为本申请实施例提供的一种显示终端的结构示意图。
具体实施方式
为了使本技术领域的人员更好地理解本申请中的技术方案，下面将结合本申请实施例中的附图，对本申请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申请一部分实施例，而不是全部实施例。基于本申请中的实施例，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，都应当属于本申请保护的范围。
图1为一些直下式液晶电视的结构示意图。该直下式液晶电视包括背光模组、设置于背光模组的出光方向上的液晶面板70以及用于夹置液晶面板70的胶框60与前框80。背光模组包括背板10、反射片30、扩散板40、膜片50等。其中，背板1上设置有灯板驱动模块和多个灯条板20。灯条板20通过走线端子与灯板驱动模块电连接，灯板驱动模块用于对灯条板进行驱动控制以控制灯条板20的亮灭。灯板驱动模块控制灯条板20发出光线后，经扩散板40、膜片50后光线变得均匀一致，然后均匀地照射到液晶面板70上，从而实现对液晶显示装置进行照明的作用。
随着背光模组中灯板上灯的尺寸越来越小，发光二极管(Light Emitting Diode,LED)颗粒直径可在1mm级别，高度0.5mm，对于超薄直下式液晶电视来说，如厚度在5mm以内，走线端子的尺寸大于灯的尺寸，走线端子的尺寸成为限制背光模组厚度的因素。同时，由于该直下式背光模组灯数量较多，亮度/色域/分区数指标要求较高，引起产品 功率较高，进而引起灯板数量较多、灯板驱动模块面积较大。灯板数量较多、灯板驱动模块面积较大，加上灯板与灯板驱动模块之间的电路走线较多，以及背板上的主板、电源板等功能板所占面积，造成在背板背部的驱动板等功能板布局时占据背板面积较大比例，通常在60％～70％以上，导致此部分背板区域无法直接裸露作为外观。因此可以作为外观的区域比重较小，通常用大后壳结构接包裹住全部背板，使得背光模组整体较厚。且由于背板为单层金属结构，大尺寸背板需要增加加强筋保障强度，电路走线必须在背板外侧，在电视上若设置加强筋及让电路走线外露使外观效果较差。
为了解决上述问题，本申请实施例提供了一种背光模组，该背光模组将走线端子和LED灯设置于灯板的两个相对表面上，能够减少背板上电路走线，从而增大背板的外观区域，使背板直接外露，作为后壳使用，以减小背光模组的厚度。
在本申请一个实施例中，如图3所示，背光模组包括灯板2，灯板2包括第一表面23和第二表面24。第一表面23与第二表面24为灯板2的相对两个表面。第一表面23设置有LED灯21。如图4所示，LED灯21在第一表面23上阵列排布。第二表面24设置有走线端子4，LED灯21与走线端子4之间电连接。
在一个示例中，走线端子4除了与LED灯21电连接外，还用于与外部模块进行电连接。具体地，走线端子4与LED灯21电连接，走线端子4通过电路走线与灯板2外侧的灯板驱动模块电连接，灯板驱动模块用于对LED灯21进行驱动控制，即用于控制LED灯的亮/灭。
本申请实施例提供的背光模组还包括背板1，如图2所示，背板1位于灯板2的第二表面24侧，背板1上设置有对应于走线端子4的避让结构，走线端子4位于避让结构内。避让结构的设置减小了背光模组的厚度。该避让结构为凹槽结构，背板1与灯板2装配时，走线端子4嵌在避让结构13内，避免了走线端子的尺寸成为限制背光模组厚度的因素，从而减小了背光模组的整体厚度。
如图6所示，背板1上还设置有走线槽14，走线槽14用于放置走线端子4对外连接的连接走线。走线端子4通过连接走线与背板1上的灯板驱动模块电连接，并将连接走线置于走线槽14内，由此规范了走线端子4与灯板驱动模块之间的连接走线，减小了背板1与灯板2之间的装配间隙。
在一个实施例中，背板1为一层结构。为了增强背板1的强度，在一个示例中，可在背板1内侧设置加强筋，且加强筋的位置避开避让结构13、走线槽14的位置。在另 一示例中，背板1可选用强度较大的金属材料制成。
在另一实施例中，背板1为两层复合结构，如图7、图8所示，背板1包括外观背板11和固定于外观背板11上的内部背板12，避让结构位于内部背板12上，即走线端子4收容于内部背板12上的避让结构内。在本申请实施例中，内部背板12上的避让结构为开口结构或凹槽结构。为了加工方便，在内部背板上冲压出开口结构形成避让结构。
内部背板12上也可设置走线结构，走线结构用于放置走线端子4对外连接的连接走线，即走线端子4与灯板驱动模块之间的连接走线设置于走线结构内。将连接走线收容于内部背板12上的走线结构内，能够规范连接走线，避免连接走线杂乱的排列于背板1上，解决了因连接走线置于外观背板11外部导致的外观不够美观问题，有利于减小内部背板12与灯板2之间的装配间隙。在一个示例中，走线结构为槽状结构或开口结构。
本实施例中，内部背板12的厚度范围为1.0mm～4.0mm，该厚度允许在内部背板12上能开设具有一定深度的避让结构与走线结构，保证走线端子4与连接走线可以完全置于内部背板12内。为了使内部背板12具有一定的厚度，内部背板12可采用厚度较厚的轻量化板材制成，如铝塑板、钢塑板、蜂窝板等。轻量化板材增加厚度后，重量也比平常金属材料轻，易于加工、安装。内部背板12也可采用相对较薄的金属片状板材，在金属片状板材上冲压出高低凸包实现走线端子4与连接走线的避让。
由于两层背板的复合，基于内部背板12的厚度或冲压高低凸包的强度增益，与传统背板相比，本申请实施例中的背板1强度更高，且该背板1中的外观背板11无需单独做加强结构。
在另一实施例中，背板1为三层复合结构，一层结构为内部背板即内部金属层，一层结构为夹层，一层结构为外观背板即外观金属层。避让结构与走线结构设置于内部金属层上，使得走线端子4与连接走线位于内部金属层内。
本申请实施例提供的背光模组中使用了多块灯板2，以满足背光模组中所用LED灯的数量。相应地，如图6所示，在背板上相应的设置有多个避让结构13。所述多个避让结构13在背板1的宽度方向上排成两排，沿着背板1的长度方向间隔排列。如图5所示走线端子4位于灯板2的一端部，因走线端子4对外连接的走线本身具有一定的电阻，走线的长度影响电压降的大小。在图6中，走线槽14的起始端位于沿背板1的宽度方向排列的两个避让结构13的相邻两端，即走线端子4分别位于灯板2的相邻两端，如此，在图6中，对应于每个灯板2的走线槽14的长度基本相同，由此保证了每个走线 的电压降基本相同，从而使得每个灯板的LED灯发光均匀一致。
本申请实施例提供的背光模组包括灯板和背板。灯板的第一表面设置有阵列排布的LED灯，灯板的第二表面设置有LED灯的走线端子，LED灯与走线端子之间电连接，走线端子用于对外电连接。背板位于灯板的第二表面侧，背板上设置有对应于走线端子的避让结构，走线端子位于避让结构内，背板上还设置有走线槽，走线槽用于放置走线端子对外连接的连接走线。本申请提供的背光模组将LED灯的走线端子设置在背板中，并在背板上设置避让结构与走线槽，走线端子嵌在避让结构内，连接走线置于走线槽内，LED灯与走线端子连接时，连接走线布置于灯板的第二表面上，走线端子与背板上的灯板驱动模块之间的连接走线嵌在走线槽内，规范了连接走线的布置，有效减小了灯板与背板之间的装配间隙，有效减小了背光模组的整体厚度。
在本申请另一实施例中，如图9所示，背光模组包括灯板2，灯板2的第一表面23上设置有阵列排布的LED灯21，第二表面24上设置有走线端子4和灯板驱动模块22。如图10所示，LED灯21通过走线端子4与灯板驱动模块22电连接。
该背光模组将走线端子4与灯板驱动模块22同时设置于灯板2的第二表面24上，实现了LED灯21与走线端子4、灯板驱动模块22的一体化。具体地，位于第二表面24上的走线端子4与第一表面23上的LED灯21电连接；位于第二表面24上的灯板驱动模块22与同表面的走线端子4电连接，从而实现了灯板驱动模块22与LED灯21的电连接，灯板驱动模块22用于对LED灯21进行驱动控制。
上述一体化的结构取消了背板上的灯板驱动模块，能够减少背板上电路走线、功能板(控制各灯板的驱动模块、衔接灯板与电源板)的数量，进而可以降低功能板在背板上的面积占比，从而能够增大背板的外观区域，背板可作为后壳使用，不需在背板外罩有后壳，从而能够大大减小背光模组的厚度。
本申请提供的背光模组还包括背板1，背板1位于灯板2的第二表面24侧，如图11所示，背板1上设置有对应于灯板驱动模块22和走线端子4的避让结构，走线端子4和灯板驱动模块22位于避让结构内，从而将走线端子4和灯板驱动模块22收容于背板1上。本申请示例中，该避让结构为凹槽结构，背板1与灯板2装配时，走线端子4与灯板驱动模块22嵌在避让结构13内，利于减小灯板2与背板1之间的间隙，从而减小背光模组的整体厚度。同时，因将灯板驱动模块集成到灯板的背面，故无需占用背板外侧的空间来装配灯板驱动模块，相比于相关技术中背板外侧的大后壳结构，本申请实施例的技术方案仅需小后壳即可实现，实现了电视薄型化和美观。
背板1上还设置有走线槽14，走线槽14用于放置走线端子4对外连接的连接走线，即灯板2第二表面24上的走线端子4对外连接的连接走线可嵌在走线槽14内，将连接走线隐藏于背板1内，进一步减小背板1与灯板2之间的装配间隙。
本申请实施例中，背板1可为一层结构，也可为两层复合结构，即背板1包括外观背板11和固定于外观背板11上的内部背板12，避让结构位于内部背板12上，即走线端子4和灯板驱动模块22收容于内部背板12上的避让结构内。在本申请实施例中，内部背板12上的避让结构为开口结构或凹槽结构，为了加工的方便，内部背板上冲压出开口结构形成避让结构。
内部背板12上也可设置走线结构，走线结构用于放置走线端子4对外连接的连接走线，即走线端子4对外连接的连接走线设置于走线结构内，将连接走线收容于内部背板12上的走线结构内，能够规范连接走线，避免连接走线杂乱的排列于背板1上，解决了因连接走线置于外观背板11外部导致的外观不够美观问题。在一个示例中，走线结构为槽结构或开口结构。
本申请实施例提供的背光模组中也使用了多块灯板2，以满足目前背光模组中所用LED灯的数量。相应地，如图11所示，在背板上相应的设置有多个避让结构13。灯板2走线端子的位置以及相应的走线槽的设置方式与上述实施例相同，在此不再赘述。
本申请实施例提供的背光模组将LED灯、走线端子、灯板驱动模块设置在灯板上，使得LED灯与走线端子、灯板驱动模块一体化，灯板驱动模块不再位于背板上，大大减小了背板上功能板的面积占比，可作为外观的背板区域增加，如此背板可直接外露作为后壳使用，不必使用大后壳罩住背板，有效提高了高端机的外观美观效果。并且走线端子与灯板驱动模块收容于背板上的避让结构内，减小了灯板与背板之间连接走线占用的空间，从而大大减小了背光模组的厚度，实现了电视薄型化。
基于本申请实施例提供的背光模组，本申请实施例还提供了一种显示终端，如图12所示，该显示终端包括上述的背光模组、和设置于背光模组出光方向上的显示面板3。可选地，该背光模组将走线端子、LED灯21与灯板驱动模块22设在灯板2上，同时减小了背板1上的驱动板面积，使得背板可以直接外露作为后壳使用，该显示终端不需后壳，从而减小了显示终端的整体厚度，实现了电视薄型化。
需要说明的是，在本说明书中，诸如术语“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电路结构、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电路结构、物品或者设备所固有的要素。在没有更多限制的情况下，有语句“包括一个……”限定的要素，并不排除在包括所述要素的电路结构、物品或者设备中还存在另外的相同要素。
本领域技术人员在考虑说明书及实践本公开后，将容易想到本申请的其他实施方案。本申请旨在涵盖本申请的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本申请的一般性原理并包括本申请未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的，本申请的真正范围和精神由权利要求的内容指出。
以上所述的本申请实施方式并不构成对本申请保护范围的限定。

Claims (11)

  1. 一种背光模组，包括：
    灯板，包括第一表面和与所述第一表面相对的第二表面；
    发光二极管LED灯，阵列排布在所述第一表面上；和
    走线端子，设置在所述第二表面上，并与所述LED灯电连接。
  2. 根据权利要求1所述的背光模组，其中，所述背光模组还包括：
    背板，所述背板位于所述第二表面侧；以及
    设置于所述背板上的避让结构，所述走线端子位于所述避让结构内。
  3. 根据权利要求2所述的背光模组，其中，所述背光模组还包括：
    灯板驱动模块，设置在所述第二表面上，用于对所述LED灯进行驱动控制。
  4. 根据权利要求3所述的背光模组，其中，所述灯板驱动模块位于所述避让结构内。
  5. 根据权利要求2所述的背光模组，其中，所述避让结构为开口结构或凹槽结构。
  6. 根据权利要求2或3所述的背光模组，其中，所述背光模组还包括：
    走线槽，设置在所述背板上，用于放置所述走线端子对外连接的连接走线。
  7. 根据权利要求2所述的背光模组，其中，所述背板包括：
    外观背板；和
    固定于所述外观背板上的内部背板，所述避让结构位于所述内部背板上。
  8. 根据权利要求7所述的背光模组，其中，所述背光模组还包括：
    走线结构，设置在所述内部背板上，用于放置所述走线端子对外连接的连接走线。
  9. 根据权利要求8所述的背光模组，其中，所述走线结构为槽结构或开口结构。
  10. 根据权利要求7至9任一项所述的背光模组，其中，所述内部背板的厚度为1.0mm～4.0mm。
  11. 一种显示终端，包括：
    权利要求1-10任一项所述的背光模组，以及
    设置于所述背光模组的出光方向上的显示面板。
PCT/CN2019/091343 2018-07-04 2019-06-14 背光模组及显示终端 WO2020007184A1 (zh)

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