WO2019061625A1 - 背光模块与显示装置 - Google Patents

背光模块与显示装置 Download PDF

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Publication number
WO2019061625A1
WO2019061625A1 PCT/CN2017/107981 CN2017107981W WO2019061625A1 WO 2019061625 A1 WO2019061625 A1 WO 2019061625A1 CN 2017107981 W CN2017107981 W CN 2017107981W WO 2019061625 A1 WO2019061625 A1 WO 2019061625A1
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WO
WIPO (PCT)
Prior art keywords
electrical connection
connection pad
disposed
circuit board
backlight module
Prior art date
Application number
PCT/CN2017/107981
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English (en)
French (fr)
Inventor
单剑锋
Original Assignee
惠科股份有限公司
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Filing date
Publication date
Application filed by 惠科股份有限公司 filed Critical 惠科股份有限公司
Priority to US16/650,504 priority Critical patent/US10823907B2/en
Publication of WO2019061625A1 publication Critical patent/WO2019061625A1/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
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0083—Details of electrical connections of light sources to drivers, circuit boards, or the like
    • 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
    • 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
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/009—Positioning aspects of the light source in the package
    • 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

  • the present application relates to a backlight module and a display device, and more particularly to a backlight module and a display device having lower cost.
  • liquid crystal display devices which have gradually replaced traditional cathode ray tube display devices due to their superior characteristics such as light weight, low power consumption and no radiation. And applied to many kinds of electronic products, such as mobile phones, portable multimedia devices, notebook computers, LCD TVs and LCD screens, and the like.
  • the architecture of the mainstream backlight module is a side-in backlight module.
  • the edge-lit backlight module generally includes components such as a back plate, a reflection sheet, an LED Light Bar, and a light guide plate.
  • the back plate carries the reflective sheet, the LED light strip and the light guide plate, and the LED light strip faces the light guide plate and is disposed on the back plate to emit light to the light guide plate.
  • the function of the light guide plate is to guide the light transmission direction, and the light is emitted from the light exit surface of the light guide plate through the total reflection of the light guide plate to provide a uniform surface light source to the display panel.
  • the reflective sheet can reflect the light emitted from the bottom surface of the light guide plate to the light guide plate, thereby improving the light utilization efficiency.
  • the voltage required for the LED strip is boosted by the converter of the driving circuit board, and then transmitted to the connector (connector) and the connecting wire (for example, the soft board) to the voltage.
  • the connector of the LED strip is used to drive the LED strip to illuminate.
  • the conventional method requires not only a relatively high-cost material such as a connector and a connecting wire, but also a problem that the wire is broken or the connector is detached, resulting in a decrease in reliability of the product.
  • the purpose of the application is to provide a backlight module and a display device, which can save the cost of the connector and the connecting wire of the conventional method, avoid the problems of the wire broken or the connector falling off, and make the product more competitive.
  • the present application provides a backlight module including a backplane, a first electrical connection pad, and a second The connecting pad, the third electrical connecting pad and a fourth electrical connecting pad, a driving circuit board and a lighting unit.
  • the back plate has a first surface and a second surface opposite to the first surface, and the back plate is divided into a metal region and an insulating region, and the insulating region is disposed around the periphery of the metal region.
  • the first electrical connection pad, the second electrical connection pad, the third electrical connection pad and the fourth electrical connection pad are disposed in the insulation region, and the first electrical connection pad and the second electrical connection pad are disposed on the back plate
  • the first surface is electrically connected through the metal region, and the third electrical connection pad and the fourth electrical connection pad are disposed on the second surface of the backplane, and the first electrical connection pad is connected to the third electrical connection pad, and The second electrical connection pad is connected to the fourth electrical connection pad.
  • the driving circuit board is disposed on the first surface of the backplane and has a fifth electrical connection pad, and the fifth electrical connection pad is correspondingly connected to the first electrical connection pad.
  • the illuminating unit is disposed on the second surface of the backboard and has a sixth electrical connection pad. The sixth electrical connection pad is correspondingly connected to the fourth electrical connection pad.
  • the present application further provides a display device including a display panel and a backlight module.
  • the backlight module is disposed opposite to the display panel, and includes a back panel, a first electrical connection pad, a second electrical connection pad, and a first a third electrical connection pad, a fourth electrical connection pad, a driving circuit board and a light emitting unit
  • the back plate has a first surface and a second surface opposite to the first surface, and the back plate is divided into a metal area and An insulating region, the insulating region is disposed around the periphery of the metal region, and the first electrical connection pad, the second electrical connection pad, the third electrical connection pad and the fourth electrical connection pad are disposed in the insulation region, and the first electricity
  • the second connection pad and the second electrical connection pad are electrically connected to the first surface of the back plate, and the third electrical connection pad and the fourth electrical connection pad are disposed on the second surface of the back plate.
  • the electrical connection pad is connected to the third electrical connection pad, and the second electrical connection pad is connected to the fourth electrical connection pad.
  • the driving circuit board is disposed on the first surface of the backboard and has a fifth electrical connection pad.
  • the fifth electrical connection pad is correspondingly connected to the first Connecting pads
  • the light emitting unit is disposed on the second surface of the backplate, and having a sixth electrical connection pad, is electrically connected to the sixth to the fourth pads are electrically connected to the corresponding connection.
  • the backlight module further includes a seventh electrical connection pad, and the seventh electrical connection pad is disposed on the first surface of the backplane, wherein the backplane is further divided into a connection area, and the seventh electrical connection pad is disposed on the first surface In the connection area, the driving circuit board further has an eighth electrical connection pad, and the eighth electrical connection pad is connected to the seventh electrical connection pad and is connected to the ground end of the driving circuit board.
  • the backlight module further includes a ninth electrical connection pad, and the ninth electrical connection pad is disposed on the second surface of the back plate, wherein the back plate is further divided into a connection area, and the ninth electrical connection pad is disposed on the second surface In the connection area, the light-emitting unit further has a tenth electrical connection pad, and the tenth electrical connection pad is connected to the ninth electrical connection pad and is connected to the ground end of a circuit board of the light-emitting unit.
  • the backplane is further divided into a connection area, and the connection area and the metal area are electrically insulated by the insulation area.
  • the backlight module further includes an insulating member disposed on the first surface or the second surface of the back plate, and the insulating member covers the metal region.
  • the light-emitting unit is directly supplied to the light-emitting unit through the corresponding electrical connection pads and the metal regions of the back plate of the backlight module, thereby eliminating the need for conventional driving illumination.
  • the cost of the connector and the connecting wire of the unit can also avoid the problems of the conventional wire broken or the connector falling off, so that the backlight module and the display device of the present application are more competitive in products.
  • FIG. 1A is a schematic diagram of a display device according to an embodiment of the present application.
  • FIG. 1B is a partial side elevational view of the backlight module of the display device of FIG. 1A.
  • FIG. 2 is a bottom view of the back panel of the backlight module of FIG. 1B.
  • FIG. 3 is a top plan view of the back panel of the backlight module of FIG. 1B.
  • FIG. 4 is a schematic diagram showing the corresponding connection of the first electrical connection pad, the seventh electrical connection pad and the fifth electrical connection pad and the eighth electrical connection pad on the circuit board of the driving circuit board on the backplane of the embodiment. .
  • FIG. 5 is a schematic diagram showing the corresponding connection of the fourth electrical connection pad, the ninth electrical connection pad and the sixth electrical connection pad and the tenth electrical connection pad on the circuit board of the light-emitting unit on the backplane of the embodiment.
  • first”, “second”, and the like in this application are used for descriptive purposes only, and are not to be construed as indicating or implying their relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first” and “second” may include at least one of the features, either explicitly or implicitly.
  • the meaning of "a plurality” is at least two, such as two, three, etc., unless specifically defined otherwise.
  • fixed may be a fixed connection, or may be a detachable connection, or may be integrated; It may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be an internal connection of two elements or an interaction relationship of two elements unless explicitly defined otherwise.
  • fix may be a fixed connection, or may be a detachable connection, or may be integrated; It may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be an internal connection of two elements or an interaction relationship of two elements unless explicitly defined otherwise.
  • specific meanings of the above terms in the present application can be understood on a case-by-case basis.
  • FIG. 1A is a schematic diagram of a display device 1 according to an embodiment of the present invention
  • FIG. 1B is a partial side view of the backlight module 3 of the display device 1 of FIG. 1A.
  • the display device 1 is a liquid crystal display device, and can include a display panel 2 and a backlight module 3.
  • the backlight module 3 is disposed opposite to the display panel 2, and emits light E through the display panel 2.
  • the display panel 2 can display an image.
  • the display panel 2 of the present embodiment can be, for example, an in-plane switch (IPS) type liquid crystal display panel, a fringe field switching (FFS) type liquid crystal display panel, and a vertical alignment mode (VA). Mode) liquid crystal display panel, photo alignment mode (PA mode) liquid crystal display panel or A 3D liquid crystal display panel, or other type of liquid crystal display panel, is not particularly limited in the application.
  • FIG. 1B and FIG. 2 and FIG. 3 Please refer to FIG. 1B and FIG. 2 and FIG. 3 , wherein FIG. 2 is a bottom view of the back plate 31 of the backlight module 3 of FIG. 1B , and FIG. 3 is a top view of the back plate 31 of the backlight module 3 of FIG. 1B . view.
  • the backlight module 3 includes a backplane 31, a first electrical connection pad P1, a second electrical connection pad P2, a third electrical connection pad P3, a fourth electrical connection pad P4, and a driving circuit board 32. And a light emitting unit 33.
  • the backplane 31 is configured to carry the components of the backlight module 3 and the display panel 1.
  • the backplane 31 has a first surface S1 and a second surface S2 opposite to the first surface S1, and the display panel 2 and the first electrical connection pad P1.
  • the second electrical connection pad P2, the third electrical connection pad P3 and the fourth electrical connection pad P4, the driving circuit board 32 and the light emitting unit 33 may be disposed on the backboard 31.
  • the backlight module 3 may further include other necessary components, such as an optical film, a light guide plate, a reflective sheet (not shown), and the like.
  • the optical film, the light guide plate, the reflective sheet and the light emitting unit 33 are all disposed on the second surface S2 of the back plate 31.
  • the light-emitting unit 33 is disposed adjacent to the light guide plate, and emits light to the light guide plate, and is emitted from the light-emitting surface. After passing through the optical film and the display panel 2, the light-emitting unit 33 is emitted from the display surface of the display panel 2.
  • the relative arrangement relationship between the optical film, the light guide plate, the reflection sheet, the back sheet 31, and the light-emitting unit 33 is a conventional process, and will not be described here.
  • the back sheet 31 can be made of a material that is easy to dissipate heat to dissipate heat generated by the display panel 2 or the backlight module 3 to the outside, and the material thereof includes, for example, metal or plastic.
  • the metal may be, for example, aluminum (AL), stainless steel (SUS) or galvanized steel (SGLC), but is not limited thereto.
  • the plastic may be, for example, polycarbonate (PC), acrylonitrile-butadiene-styrene copolymer (ABS), or other insulating materials, and is not limited thereto.
  • the back sheet 31 of this embodiment is exemplified by a metal and plastic material. Among them, the metal can be used for, for example, conduction and heat dissipation, and the plastic can be used, for example, for insulation.
  • the back plate 31 of the present embodiment can be divided into a metal region 34 and an insulating region 35, and the insulating region 35 is disposed around the periphery of the metal region 34.
  • the back plate 31 of the present embodiment can be further divided into a connection region 36, and the connection region 36 and the metal region 34 are electrically insulated by the insulation region 35.
  • the metal region 34 and the junction region 36 are respectively made of a conductive metal material for electrical conduction, and the connection region 36 can be connected to ground.
  • the insulating region 35 is made of, for example, an insulating plastic material for separating the region 36 from the metal region 34. In practice, the insulating plastic can be embedded in the metal plate to form the metal region 34, the insulating region 35 and the connection region. 36 back plate 31.
  • the first electrical connection pad P1, the second electrical connection pad P2, the third electrical connection pad P3 and the fourth electrical connection pad P4 are disposed in the insulating region 35, so that the insulating region 35 can also be disposed around the first electric
  • the first electrical connection pads P1 and the second electrical connection pads P2 are disposed on the first surface S1 of the backplane 31 and are electrically connected through the metal region 34, and the third electrical connection pads P3.
  • the fourth electrical connection pad P4 is disposed on the second surface S2 of the back plate 31, and the two may be electrically connected through the metal region 34.
  • the backlight module 3 of the embodiment may further include an insulating member 37, and the insulating member 37 is disposed on the first backing plate 31.
  • the surface S1 or the second surface S2 may be overlaid on the metal region 34.
  • the insulating member 37 can be disposed on the first surface S1 and the second surface S2 of the back plate 31 at the same time, and can be covered on the metal region 34, and can even cover the second electrical connection pad P2 to avoid other external components.
  • first electrical connection pad P1 is connected to the third electrical connection pad P3, and the second electrical connection pad P2 is connected to the fourth electrical connection pad P4.
  • “Corresponding connection” means that the positions of the two on the backing plate 31 are corresponding (on the opposite surface) and that the two are also connected, for example, (metal) by metal material of the metal region 34, or by using other conductive materials.
  • the first electrical connection pad P1 is correspondingly and electrically connected to the third electrical connection pad P3, and the second electrical connection pad P2 is correspondingly and electrically connected to the fourth electrical connection pad.
  • the backlight module 3 may further include a seventh electrical connection pad P7 (FIG. 2).
  • the seventh electrical connection pad P7 is disposed on the first surface S1 of the back plate 31 and located at the connection region 36. In other words, the seventh electrical connection pad P7 is connected to the ground.
  • the seventh electrical connection pad P7 can be disposed side by side with the first electrical connection pad P1.
  • the driving circuit board 32 is disposed on the first surface S1 of the backplane 31 and has a fifth electrical connection pad P5.
  • the fifth electrical connection pad P5 is correspondingly connected to the first electrical connection pad P1.
  • the driving circuit board 32 of the embodiment may further have an eighth electrical connection pad P8 (FIG. 4), a driving circuit 322 and a circuit board 321, a driving circuit 322, a fifth electrical connection pad P5 and an eighth.
  • the electrical connection pad P8 is disposed on the circuit board 321 .
  • the driving circuit 322 may include, for example, a converter or other necessary components for outputting a driving voltage, and the converter may boost the voltage to output a high-voltage driving voltage.
  • FIG. 4 it is a first electrical connection pad P1 and a seventh electrical property on the backplane 31 of an embodiment.
  • the fifth electrical connection pad P5 is connected to the first electrical connection pad P1
  • the eighth electrical connection pad P8 is connected to the seventh electrical connection pad P7
  • the eighth electrical connection pad P8 is connectable to the driving circuit 322.
  • the grounding end of the converter causes the seventh electrical connection pad P7 to also be connected to the ground of the driving circuit board 32.
  • the light-emitting unit 33 is disposed on the second surface S2 of the backplane 31 and has a sixth electrical connection pad P6.
  • the sixth electrical connection pad P6 is correspondingly connected to the fourth electrical connection pad P4.
  • the backlight module 3 of the present embodiment may further include a ninth electrical connection pad P9 disposed on the second surface S2 of the back plate 31 and located at the connection region 36.
  • the ninth electrical connection pad P9 is connected to the ground.
  • the ninth electrical connection pad P9 can be disposed side by side with the fourth electrical connection pad P4.
  • the light-emitting unit 33 of the embodiment further has a tenth electrical connection pad P10, a circuit board 331 and at least one light-emitting element 332, a light-emitting element 332 and a sixth electrical connection pad P6 and a tenth electrical connection pad P10. They are all disposed on the circuit board 331.
  • the circuit board 331 can be a flexible circuit board or a rigid circuit board
  • the light-emitting unit 33 can be a light-emitting diode light strip, such that the number of the light-emitting elements 332 is plural, and are respectively disposed on the circuit board 331, and each light-emitting
  • the component 332 is electrically connected to the corresponding sixth electrical connection pad P6 and the tenth electrical connection pad P10, respectively, so that the driving voltage can drive the light-emitting component 332 to emit light through the sixth electrical connection pad P6 and the tenth electrical connection pad P10.
  • the tenth electrical connection pad P10 can be connected to the ground end of the circuit board 331. Since the ninth electrical connection pad P9 is located in the connection region 36, the ninth electrical connection pad P9 and the tenth electrical connection pad P10 are also connected to the ground.
  • FIG. 5 it is a fourth electrical connection pad P4, a ninth electrical connection pad P9 on the backplane 31 of the embodiment, and a sixth electrical connection pad P6 on the circuit board 331 of the light-emitting unit 33, Corresponding connection diagram of the tenth electrical connection pad P10.
  • the sixth electrical connection pad P6 is connected to the fourth electrical connection pad P4, and the tenth electrical connection pad P10 is connected to the ninth electrical connection pad P9, and the tenth electrical connection pad P10 is connectable to the ground of the circuit board 331.
  • the terminal (not shown) is such that the ninth electrical connection pad P9 is also connected to the ground of the circuit board 331 of the light-emitting unit 33.
  • the eighth electrical connection pad P8 on the circuit board 321 and the tenth electrical connection pad P10 on the circuit board 331 can also be respectively connected to the ground of the circuit system.
  • connection pad P5 is electrically connected to the first Between the pads P1, between the sixth electrical connection pads P6 and the fourth electrical connection pads P4, between the eighth electrical connection pads P8 and the seventh electrical connection pads P7, and the tenth electrical connection pads P10 and A conductive connection (not shown) is disposed between the nine electrical connection pads P9 to reduce the contact resistance between the two.
  • the material of the conductive connecting member may be, for example, a conductive foam, a conductive adhesive (for example, copper glue) or a soldering iron, and is not limited.
  • the high-voltage driving voltage outputted to the fifth electrical connection pad P5 after being boosted by the converter of the driving circuit 322 can pass through the fifth electrical connection pad P5 and the first electrical connection pad P1.
  • the metal region 34 of the backplane 31 is transferred to the second electrical connection pad P2, and then transmitted to the sixth electrical connection pad P6 through the fourth electrical connection pad P4 to drive the light-emitting component 332 to emit light.
  • the electrical connection pads and the metal regions of the backplane are directly supplied to the light-emitting unit through the corresponding metal pads of the backlight module, thereby eliminating the traditional driving illumination.
  • the cost of the connector and the connecting wire of the unit can also avoid the problems of the conventional wire broken or the connector falling off, so that the backlight module and the display device of the present application are more competitive in products.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Planar Illumination Modules (AREA)

Abstract

一种背光模块(3)与显示装置(1)，背光模块(3)的背板(31)具有第一表面(S1)与第二表面(S2)，背板(31)还区分成一金属区(34)与一绝缘区(35)，多个电性连接垫(P1~P10)设置于绝缘区(35)内。第一电性连接垫(P1)与第二电性连接垫(P2)设置于第一表面(S1)且通过金属区(34)电性连接，第三电性连接垫(P3)与第四电性连接垫(P4)设置于第二表面(S2)，第一电性连接垫(P1)对应连接于第三电性连接垫(P3)，第二电性连接垫(P2)对应连接第四电性连接垫(P4)。驱动电路板(32)具有一第五电性连接垫(P5)，第五电性连接垫(P5)对应连接第一电性连接垫(P1)。发光单元(33)具有一第六电性连接垫(P6)，第六电性连接垫(P6)对应连接第四电性连接垫(P4)。

Description

背光模块与显示装置 技术领域
本申请关于一种背光模块与显示装置，特别关于一种具有较低成本的背光模块与显示装置。
背景技术
随着科技的进步，平面显示装置已经广泛的被运用在各种领域，尤其是液晶显示装置，因具有体型轻薄、低功率消耗及无辐射等优越特性，已经渐渐地取代传统阴极射线管显示装置，而应用至许多种类之电子产品中，例如行动电话、可携式多媒体装置、笔记型计算机、液晶电视及液晶屏幕等等。
由于液晶本身不会发光，为了显示影像，需要搭置背光模块(Backlight Module)来提供均匀的光线给显示面板。目前主流背光模块的架构为侧入式背光模块。在公知技术中，侧入式背光模块一般包含有背板、反射片、发光二极管灯条(LED Light Bar)与导光板等部件。背板承载反射片、LED灯条与导光板，LED灯条面对导光板且设置于背板上，以发出光线入射至导光板。导光板的作用在于引导光线的传输方向，并通过导光板之全反射，使光线由导光板之出光面射出，以提供均匀的面光源给显示面板。另外，反射片可将由导光板之底面射出的光线再反射至导光板，藉此提高光线利用率。
在传统作法中，LED灯条所需的电压是通过驱动电路板的变流器(Converter)将系统端输入的电压升压后，经过连接器(Connector)与连接线材(例如软板)传输至LED灯条的连接器，以驱动LED灯条发光。然而，传统的作法不仅需要连接器与连接线材等较高成本的材料外，也可能会发生线材折伤或是连接器脱落等问题，导致产品的可靠度降低。
发明内容
本申请的目的为提供一种背光模块与显示装置，可省去传统做法的连接器与连接线材的成本，避免线材折伤或连接器脱落等问题，使产品更具竞争力。
本申请提出一种背光模块，包括一背板、一第一电性连接垫、一第二电 性连接垫、一第三电性连接垫与一第四电性连接垫、一驱动电路板以及一发光单元。背板具有一第一表面及与第一表面相反的一第二表面，且背板区分成一金属区与一绝缘区，绝缘区围设于金属区的外围。第一电性连接垫、第二电性连接垫、第三电性连接垫与第四电性连接垫设置于绝缘区内，第一电性连接垫与第二电性连接垫设置于背板的第一表面且通过金属区电性连接，第三电性连接垫与第四电性连接垫设置于背板的第二表面，第一电性连接垫对应连接第三电性连接垫，且第二电性连接垫对应连接第四电性连接垫。驱动电路板设置于背板的第一表面，并具有一第五电性连接垫，第五电性连接垫对应连接于第一电性连接垫。发光单元设置于背板的第二表面，并具有一第六电性连接垫，第六电性连接垫对应连接于第四电性连接垫。
本申请另提出一种显示装置，包括一显示面板以及一背光模块，背光模块与显示面板相对设置，并包含一背板、一第一电性连接垫、一第二电性连接垫、一第三电性连接垫、一第四电性连接垫、一驱动电路板及一发光单元，背板具有一第一表面及与第一表面相反的一第二表面，且背板区分成一金属区与一绝缘区，绝缘区围设于金属区的外围，第一电性连接垫、第二电性连接垫、第三电性连接垫与第四电性连接垫设置于绝缘区内，第一电性连接垫与第二电性连接垫设置于背板的第一表面且通过金属区电性连接，第三电性连接垫与第四电性连接垫设置于背板的第二表面，第一电性连接垫对应连接第三电性连接垫，且第二电性连接垫对应连接第四电性连接垫，驱动电路板设置于背板的第一表面，并具有一第五电性连接垫，第五电性连接垫对应连接于第一电性连接垫，发光单元设置于背板的第二表面，并具有一第六电性连接垫，第六电性连接垫对应连接于第四电性连接。
在一实施例中，背光模块还包括一第七电性连接垫，第七电性连接垫设置于背板的第一表面，其中背板还区分成一接地区，第七电性连接垫设置于接地区，驱动电路板还具有一第八电性连接垫，第八电性连接垫对应连接第七电性连接垫，并连接至驱动电路板的接地端。
在一实施例中，背光模块还包括一第九电性连接垫，第九电性连接垫设置于背板的第二表面，其中背板还区分成一接地区，第九电性连接垫设置于接地区，发光单元还具有一第十电性连接垫，第十电性连接垫对应连接第九电性连接垫，并连接至发光单元的一电路板的接地端。
在一实施例中，背板还区分成一接地区，接地区与金属区通过绝缘区电性绝缘。
在一实施例中，背光模块还包括一绝缘件，绝缘件设置于背板的第一表面或第二表面，且绝缘件覆盖金属区。
承上所述，在本申请之背光模块与显示装置中，是通过背光模块的背板上对应设置的电性连接垫和背板的金属区直接供电给发光单元，因此可省去传统驱动发光单元的连接器与连接线材的成本，也可避免传统的线材折伤或连接器脱落等问题，使得本申请的背光模块与显示装置更具有产品竞争力。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图示出的结构获得其他的附图。
图1A为本申请一实施例之一种显示装置的示意图。
图1B为图1A之显示装置的背光模块的部分侧视示意图。
图2为图1B之背光模块的背板的仰视示意图。
图3为图1B之背光模块的背板的俯视示意视图。
图4为一实施例的背板上的第一电性连接垫、第七电性连接垫与驱动电路板之电路板上的第五电性连接垫、第八电性连接垫的对应连接示意图。
图5为一实施例的背板上的第四电性连接垫、第九电性连接垫与发光单元之电路板上的第六电性连接垫、第十电性连接垫的对应连接示意图。
本申请目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
具体实施方式
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的一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有 作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
需要说明，本申请实施例中所有方向性指示(诸如上、下、左、右、前、后……)仅用于解释在某一特定姿态(如附图所示)下各部件之间的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。
另外，在本申请中如涉及“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本申请的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
在本申请中，除非另有明确的规定和限定，术语“连接”、“固定”等应做广义理解，例如，“固定”可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
另外，本申请各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本申请要求的保护范围之内。
以下将参照相关图式，说明依本申请一些实施例之背光模块与显示装置，其中相同的组件将以相同的参照符号加以说明。
图1A为本申请一实施例之一种显示装置1的示意图，而图1B为图1A之显示装置1的背光模块3的部分侧视示意图。
如图1A所示，显示装置1为一液晶显示装置，并可包括一显示面板2以及一背光模块3，背光模块3与显示面板2相对设置，并可发出光线E穿过显示面板2，使显示面板2可显示影像。本实施例的显示面板2可例如为平面切换(in-plane switch，IPS)式液晶显示面板、边缘电场切换(fringe field switching，FFS)式液晶显示面板、垂直配向模态(vertical alignment mode,VA mode)液晶显示面板、光配向模态(photo alignment mode,PA mode)液晶显示面板或 3D液晶显示面板，或其它型式的液晶显示面板，本申请并不特别限定型式。
请参照图1B并配合图2与图3所示，其中，图2为图1B之背光模块3的背板31的仰视示意图，而图3为图1B之背光模块3的背板31的俯视示意视图。
背光模块3包括一背板31、一第一电性连接垫P1、一第二电性连接垫P2、一第三电性连接垫P3、一第四电性连接垫P4、一驱动电路板32以及一发光单元33。
背板31用以承载背光模块3的部件与显示面板1，背板31具有第一表面S1及与第一表面S1相反的第二表面S2，而显示面板2、第一电性连接垫P1、第二电性连接垫P2、第三电性连接垫P3与第四电性连接垫P4、驱动电路板32与发光单元33可设置于背板31。除了上述的部件之外，背光模块3还可包括其它必要的部件，例如包含光学膜片、导光板、反射片(未绘示)等。其中，光学膜片、导光板与反射片和发光单元33皆设置于背板31的第二表面S2上。发光单元33邻设于导光板，并可发出光线入射至导光板，且由其出光面射出，再通过光学膜片与显示面板2之后，由显示面板2的显示面射出。于此，光学膜片、导光板、反射片与背板31、发光单元33的相对设置关系为习知工艺，在此不再多做说明。
背板31可以易于散热的材料制成，以将显示面板2或背光模块3所产生的热能散逸至外界，其材料例如包含金属或塑胶。金属例如可为铝(AL)、不锈钢(SUS)或镀锌钢材(SGLC)，但不限于此。而塑胶例如可为聚碳酸酯(PC)、丙烯腈-丁二烯-苯乙烯共聚物(ABS)，或其它绝缘材料，也不限于此。本实施例的背板31是以包含金属与塑胶材料为例。其中，金属例如可用于导电与散热，而塑胶例如可用于绝缘。
具体来说，如图2与图3所示，本实施例的背板31可区分成一金属区34与一绝缘区35，绝缘区35围设于金属区34的外围。另外，本实施例的背板31还可区分成一接地区36，而且接地区36与金属区34之间是通过绝缘区35电性绝缘。顾名思义，金属区34与接地区36分别为可导电的金属材料所制成，用以导电之用，且接地区36可连接至接地(Ground)。另外，绝缘区35例如是以绝缘的塑胶材料制成，用以隔开接地区36与金属区34。在实施上，可将绝缘塑胶嵌设于金属板材内而形成具有金属区34、绝缘区35与接地区 36的背板31。
第一电性连接垫P1、第二电性连接垫P2、第三电性连接垫P3与第四电性连接垫P4设置于绝缘区35内，使得绝缘区35还可围设于第一电性连接垫P1、第二电性连接垫P2、第三电性连接垫P3与第四电性连接垫P4的外围。如图1B所示，第一电性连接垫P1与第二电性连接垫P2设置于背板31的第一表面S1且两者通过金属区34电性连接，而第三电性连接垫P3与第四电性连接垫P4设置于背板31的第二表面S2，两者也可以通过金属区34而电性连接。
值得注意的是，为了避免影响发光单元的33的供电，也为了保护设备或人员的安全，本实施例的背光模块3还可包括一绝缘件37，绝缘件37设置于背板31的第一表面S1或第二表面S2上，并可覆盖在金属区34上。另外，可同时将绝缘件37设置于背板31的第一表面S1和第二表面S2，并且覆盖在金属区34上，甚至于还可覆盖在第二电性连接垫P2上，避免外界其它物件碰触到金属区34或第二电性连接垫P2而影响供电。
另外，第一电性连接垫P1对应连接第三电性连接垫P3，且第二电性连接垫P2对应连接第四电性连接垫P4。“对应连接”是表示，两者在背板31上的位置是对应(位于相反表面)而且两者也连接，例如可通过金属区34的金属材料而(电)连接，或是利用其它的导电件(例如导线)而电性连接，使第一电性连接垫P1对应且电连接于第三电性连接垫P3，且第二电性连接垫P2对应且电连接于第四电性连接垫P4。此外，背光模块3还可包括一第七电性连接垫P7(图2)，第七电性连接垫P7设置于背板31的第一表面S1，并位于接地区36。换言之，第七电性连接垫P7连接至接地。第七电性连接垫P7可与第一电性连接垫P1并排设置。
驱动电路板32设置于背板31的第一表面S1，并具有一第五电性连接垫P5，第五电性连接垫P5对应连接于第一电性连接垫P1。另外，本实施例的驱动电路板32还可具有一第八电性连接垫P8(图4)、一驱动电路322及一电路板321，驱动电路322、第五电性连接垫P5和第八电性连接垫P8设置于电路板321上。其中，驱动电路322例如可包含变流器(Converter)或其它输出驱动电压的必要组件，而变流器可将电压升压而输出高压的驱动电压。
如图4所示，其为一实施例的背板31上的第一电性连接垫P1、第七电性 连接垫P7与驱动电路板32之电路板321上的第五电性连接垫P5、第八电性连接垫P8的对应连接示意图。第五电性连接垫P5对应连接第一电性连接垫P1，而第八电性连接垫P8对应连接第七电性连接垫P7，且第八电性连接垫P8可连接至驱动电路322的变流器的接地端(未绘示)，使得第七电性连接垫P7也连接至驱动电路板32的接地端。
请再参照图1B所示，发光单元33设置于背板31的第二表面S2，并具有一第六电性连接垫P6，第六电性连接垫P6对应连接于第四电性连接垫P4。另外，本实施例的背光模块3还可包括一第九电性连接垫P9，第九电性连接垫P9设置于背板31的第二表面S2上，并位于接地区36。换言之，第九电性连接垫P9连接至接地。第九电性连接垫P9可与第四电性连接垫P4并排设置。
另外，本实施例的发光单元33还具有一第十电性连接垫P10、一电路板331及至少一发光元件332，发光元件332与第六电性连接垫P6和第十电性连接垫P10皆设置于电路板331上。在实施上，电路板331可为软性电路板或硬性电路板，而发光单元33可为发光二极管灯条，使得发光元件332的数量为复数，并分别设置于电路板331上，且各发光元件332分别与对应的第六电性连接垫P6和第十电性连接垫P10电连接，使驱动电压可通过第六电性连接垫P6和第十电性连接垫P10驱动发光元件332发光。其中，第十电性连接垫P10可连接至电路板331的接地端。由于第九电性连接垫P9位于接地区36内，因此，第九电性连接垫P9与第十电性连接垫P10也连接至接地。
如图5所示，其为一实施例的背板31上的第四电性连接垫P4、第九电性连接垫P9与发光单元33之电路板331上的第六电性连接垫P6、第十电性连接垫P10的对应连接示意图。第六电性连接垫P6对应连接第四电性连接垫P4，且第十电性连接垫P10对应连接第九电性连接垫P9，第十电性连接垫P10可连接至电路板331的接地端(未绘示)，使得第九电性连接垫P9也连接至发光单元33之电路板331的接地端。此外，电路板321上的第八电性连接垫P8与电路板331上的第十电性连接垫P10还可分别连接至电路系统的接地。
请再参照图1B所示，为了增加第五电性连接垫P5与第一电性连接垫P1之间、第六电性连接垫P6与第四电性连接垫P4之间、第八电性连接垫P8与第七电性连接垫P7之间和第十电性连接垫P10与第九电性连接垫P9之间的导电性，减少两者连接时的电阻，还可在第五电性连接垫P5与第一电性连接 垫P1之间、第六电性连接垫P6与第四电性连接垫P4之间、第八电性连接垫P8与第七电性连接垫P7之间和第十电性连接垫P10与第九电性连接垫P9之间设置一导电连接件(未绘示)，以减少两者的接触电阻。导电连接件的材料可例如为导电泡棉、导电胶(例如铜胶)或焊钖，并不限制。
因此，于实际应用时，经驱动电路322的变流器升压后输出至第五电性连接垫P5的高压的驱动电压，可通过第五电性连接垫P5及第一电性连接垫P1和背板31的金属区34传送至第二电性连接垫P2，再通过第四电性连接垫P4传送至第六电性连接垫P6，以驱动发光元件332发光。
综上所述，在本申请之背光模块与显示装置中，是通过背光模块的背板上对应设置的电性连接垫和背板的金属区直接供电给发光单元，因此可省去传统驱动发光单元的连接器与连接线材的成本，也可避免传统的线材折伤或连接器脱落等问题，使得本申请的背光模块与显示装置更具有产品竞争力。
以上所述仅为本申请的优选实施例，并非因此限制本申请的专利范围，凡是在本申请的构思下，利用本申请说明书及附图内容所作的等效结构变换，或直接/间接运用在其他相关的技术领域均包括在本申请的专利保护范围内。

Claims (20)

  1. 一种背光模块，包括：
    一背板，具有一第一表面及与所述第一表面相反的一第二表面，且所述背板区分成一金属区与一绝缘区，所述绝缘区围设于所述金属区的外围；
    一第一电性连接垫、一第二电性连接垫、一第三电性连接垫与一第四电性连接垫，其设置于所述绝缘区内，所述第一电性连接垫与所述第二电性连接垫设置于所述背板的所述第一表面且通过所述金属区电性连接，所述第三电性连接垫与所述第四电性连接垫设置于所述背板的所述第二表面，所述第一电性连接垫对应连接所述第三电性连接垫，且所述第二电性连接垫对应连接所述第四电性连接垫；
    一驱动电路板，设置于所述背板的所述第一表面，并具有一第五电性连接垫，所述第五电性连接垫对应连接于所述第一电性连接垫；以及
    一发光单元，设置于所述背板的所述第二表面，并具有一第六电性连接垫，所述第六电性连接垫对应连接于所述第四电性连接垫。
  2. 如权利要求1所述的背光模块，还包括：
    一第七电性连接垫，设置于所述背板的所述第一表面，其中所述背板还区分成一接地区，所述第七电性连接垫设置于所述接地区，所述驱动电路板还具有一第八电性连接垫，所述第八电性连接垫对应连接所述第七电性连接垫，并连接至所述驱动电路板的接地端。
  3. 如权利要求1所述的背光模块，还包括：
    一第九电性连接垫，设置于所述背板的所述第二表面，其中所述背板还区分成一接地区，所述第九电性连接垫设置于所述接地区，所述发光单元还具有一第十电性连接垫，所述第十电性连接垫对应连接所述第九电性连接垫，并连接至所述发光单元的一电路板的接地端。
  4. 如权利要求1所述的背光模块，其中，所述绝缘区围设于所述第一电性连接垫、所述第二电性连接垫、所述第三电性连接垫与所述第四电性连接垫的外围。
  5. 如权利要求1所述的背光模块，其中，所述第三电性连接垫与所述第四电性连接垫通过所述金属区而电性连接。
  6. 如权利要求1所述的背光模块，其中，所述背板还区分成一接地区， 所述接地区与所述金属区通过所述绝缘区电性绝缘。
  7. 如权利要求1所述的背光模块，还包括：
    一绝缘件，设置于所述背板的所述第一表面或所述第二表面，所述绝缘件覆盖所述金属区。
  8. 如权利要求7所述的背光模块，其中，所述绝缘件还覆盖所述第二电性连接垫。
  9. 如权利要求1所述的背光模块，其中，所述驱动电路板还具有一第八电性连接垫、一驱动电路及一电路板，所述驱动电路、所述第五电性连接垫和所述第八电性连接垫设置于所述电路板上，所述第八电性连接垫连接所述驱动电路的接地端。
  10. 如权利要求1所述的背光模块，其中，所述发光单元还具有一第十电性连接垫、一电路板及至少一发光元件，所述发光元件与所述第六电性连接垫和所述第十电性连接垫设置于所述电路板上，所述第十电性连接垫连接所述电路板的接地端。
  11. 一种显示装置，包括：
    一显示面板；以及
    一背光模块，与显示面板相对设置，并包含一背板、一第一电性连接垫、一第二电性连接垫、一第三电性连接垫、一第四电性连接垫、一驱动电路板及一发光单元，所述背板具有一第一表面及与所述第一表面相反的一第二表面，且所述背板区分成一金属区与一绝缘区，所述绝缘区围设于所述金属区的外围，所述第一电性连接垫、所述第二电性连接垫、所述第三电性连接垫与所述第四电性连接垫设置于所述绝缘区内，所述第一电性连接垫与所述第二电性连接垫设置于所述背板的所述第一表面且通过所述金属区电性连接，所述第三电性连接垫与所述第四电性连接垫设置于所述背板的所述第二表面，所述第一电性连接垫对应连接所述第三电性连接垫，且所述第二电性连接垫对应连接所述第四电性连接垫，所述驱动电路板设置于所述背板的所述第一表面，并具有一第五电性连接垫，所述第五电性连接垫对应连接于所述第一电性连接垫，所述发光单元设置于所述背板的所述第二表面，并具有一第六电性连接垫，所述第六电性连接垫对应连接于所述第四电性连接垫。
  12. 如权利要求11所述的显示装置，其中，所述背光模块还包含一第七 电性连接垫，所述第七电性连接垫设置于所述背板的所述第一表面，其中所述背板还区分成一接地区，所述第七电性连接垫设置于所述接地区，所述驱动电路板还具有一第八电性连接垫，所述第八电性连接垫对应连接所述第七电性连接垫，并连接至所述驱动电路板的接地端。
  13. 如权利要求11所述的显示装置，其中，所述背光模块还包含一第九电性连接垫，所述第九电性连接垫设置于所述背板的所述第二表面，其中所述背板还区分成一接地区，所述第九电性连接垫设置于所述接地区，所述发光单元还具有一第十电性连接垫，所述第十电性连接垫对应连接所述第九电性连接垫，并连接至所述发光单元的一电路板的接地端。
  14. 如权利要求11所述的显示装置，其中，所述绝缘区围设于所述第一电性连接垫、所述第二电性连接垫、所述第三电性连接垫与所述第四电性连接垫的外围。
  15. 如权利要求11所述的显示装置，其中，所述第三电性连接垫与所述第四电性连接垫通过所述金属区而电性连接。
  16. 如权利要求11所述的显示装置，其中，所述背板还区分成一接地区，所述接地区与所述金属区通过所述绝缘区电性绝缘。
  17. 如权利要求11所述的显示装置，其中，所述背光模块还包含一绝缘件，所述绝缘件设置于所述背板的所述第一表面或所述第二表面，所述绝缘件覆盖所述金属区。
  18. 如权利要求17所述的显示装置，其中，所述绝缘件还覆盖所述第二电性连接垫。
  19. 如权利要求11所述的显示装置，其中，所述驱动电路板还具有一第八电性连接垫、一驱动电路及一电路板，所述驱动电路、所述第五电性连接垫和所述第八电性连接垫设置于所述电路板上，所述第八电性连接垫连接所述驱动电路的接地端。
  20. 如权利要求11所述的显示装置，其中，所述发光单元还具有一第十电性连接垫、一电路板及至少一发光元件，所述发光元件与所述第六电性连接垫和所述第十电性连接垫设置于所述电路板上，所述第十电性连接垫连接所述电路板的接地端。
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