WO2014059701A1 - 一种背光模组及液晶显示装置 - Google Patents
一种背光模组及液晶显示装置 Download PDFInfo
- Publication number
- WO2014059701A1 WO2014059701A1 PCT/CN2012/083869 CN2012083869W WO2014059701A1 WO 2014059701 A1 WO2014059701 A1 WO 2014059701A1 CN 2012083869 W CN2012083869 W CN 2012083869W WO 2014059701 A1 WO2014059701 A1 WO 2014059701A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- backlight module
- front frame
- liquid crystal
- plate
- fastened
- Prior art date
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 40
- 230000003287 optical effect Effects 0.000 claims description 27
- 239000011521 glass Substances 0.000 claims description 18
- 238000009792 diffusion process Methods 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 abstract description 8
- 238000005457 optimization Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
-
- 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
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
- G02F1/133314—Back frames
-
- 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
-
- 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
- G02F1/133628—Illuminating devices with cooling means
Definitions
- the present invention relates to the field of liquid crystal display, and in particular to a backlight module and a liquid crystal display device. Background technique
- the liquid crystal display device includes a display module, and the display module needs to use a backlight to provide a light source for displaying images.
- the existing backlights are mainly CCFL (Cold Cathode Fluorescent Lamp) and LED (Light Emitting). Diode, LED).
- CCFL Cold Cathode Fluorescent Lamp
- LED Light Emitting
- Diode, LED Diode
- LED is a new type of light source, which has the advantages of high brightness and low power consumption. Therefore, the design of LED backlight is gradually increasing, which is also a trend for future design.
- LED since LED also generates high heat at the same time, in order to ensure LED light-emitting efficiency and life. , need to design the heat dissipation for the LED.
- the LED is usually packaged on a PCB board or a MCPCB (Metal Core PCB) board to form a light bar, and then fixed on the aluminum by tape or screw, and finally Squeeze the aluminum with the backing plate.
- MCPCB Metal Core PCB
- the technical problem to be solved by the present invention is to provide a backlight module and a liquid crystal display device, which can optimize the heat dissipation path in the backlight module and realize the extremely narrow design of the backlight module frame.
- a technical solution adopted by the present invention is: providing a backlight module, comprising: a light source, a PCB board, and a back board, wherein the PCB board is provided with a bend, and the light source is fixed in the a bent PCB board, the PCB board being fixedly connected to the back board for conducting heat generated by the light source;
- the PCB board includes a horizontal plate and a vertical plate that are vertically connected to each other, the light source is disposed at an inner side of the vertical plate, and the back plate is fastened to an inner side of the horizontal plate;
- the backlight module further includes a plastic frame fastened on the optical component provided with the bent PCB board and the backlight module, and the optical component is pressed against the backboard.
- the optical member includes at least a diffusion plate, a prism, a diffusion plate, and a light guide plate.
- the backlight module further includes a front frame, the front frame includes a front frame horizontal plate and a front frame vertical plate that are perpendicular to each other, and the front frame horizontal plate presses the liquid crystal glass to be fastened on the plastic frame ;
- the front frame riser is fastened to the outside of the PCB riser.
- a backlight module comprising: a light source, a PCB board, and a back board, wherein the PCB board is provided with a bend, and the light source is fixed at the The PCB board is provided with a bend, and the PCB board is fixedly connected with the back board for conducting heat generated by the light source.
- the PCB board comprises a horizontal plate and a vertical plate that are perpendicularly connected to each other;
- the light source is disposed inside the riser, and the back plate is fastened to an inner side or an outer side of the horizontal plate.
- the backlight module further includes a plastic frame fastened on the optical component provided with the bent PCB board and the backlight module, and the optical component is pressed against the backboard on.
- the plastic frame includes at least one pressing block.
- One of the pressing faces is provided with two pressing faces, one pressing face of which is pressed against the end face of the riser, and the other pressing face is pressed against the end of the optical member close to the light source.
- the other side of the compact opposite to the side of the pressing block on which the pressing surface is disposed is fastened to the liquid crystal glass of the backlight module.
- a frame plate is bent from one end side of the pressing block, and the frame plate is fastened on the outer side of the PCB vertical plate.
- the backlight module further includes a front frame, and the front frame includes a front frame horizontal plate and a front frame vertical plate that are perpendicular to each other, and the front frame horizontal plate presses the liquid crystal glass to be fastened on the pressing block. ;
- the front frame riser is fastened to the outside of the frame plate.
- the backlight module further includes a front frame, and the front frame includes a front frame horizontal plate and a front frame vertical plate that are perpendicular to each other, and the front frame horizontal plate presses the liquid crystal glass to be fastened on the pressing block. ;
- the front frame riser is fastened to the outside of the PCB riser.
- the pressure block is integrally connected with the front frame vertical plate.
- a liquid crystal display device including a backlight module, the backlight module comprising: a light source, a PCB board, and a back board, wherein the PCB The board is provided with a bend, and the light source is fixed on the PCB board provided with a bend, and the PCB board is fixedly connected with the back board for conducting heat generated by the light source.
- the PCB board comprises a horizontal plate and a vertical plate that are perpendicularly connected to each other;
- the light source is disposed inside the riser, and the back plate is fastened to an inner side or an outer side of the horizontal plate.
- the backlight module further includes a plastic frame fastened on the optical component provided with the bent PCB board and the backlight module, and the optical component is pressed against the backboard on.
- the plastic frame includes at least one pressing block.
- One of the pressing faces is provided with two pressing faces, one pressing face of which is pressed against the end face of the riser, and the other pressing face is pressed against the end of the optical member close to the light source.
- the other side of the compact opposite to the side of the pressing block on which the pressing surface is disposed is fastened to the liquid crystal glass of the backlight module.
- a frame plate is bent from one end side of the pressing block, and the frame plate is fastened on the outer side of the PCB vertical plate.
- the backlight module further includes a front frame, and the front frame includes a front frame horizontal plate and a front frame vertical plate that are perpendicular to each other, and the front frame horizontal plate presses the liquid crystal glass to be fastened on the pressing block. ;
- the front frame riser is fastened to the outside of the frame plate.
- the backlight module further includes a front frame, and the front frame includes a front frame horizontal plate and a front frame vertical plate that are perpendicular to each other, and the front frame horizontal plate presses the liquid crystal glass to be fastened on the pressing block. ;
- the front frame riser is fastened to the outside of the PCB riser.
- the pressure block is integrally connected with the front frame vertical plate.
- the backlight module and the liquid crystal display device provided by the invention have the following beneficial effects: Since the PCB of the backlight module is provided with bending, the heat generated by the light source can be transmitted through the bent PCB board and the back board, and further Achieve heat dissipation. The process of assembling the PCB board and the heat sink can be omitted, the material can be saved, and the assembly efficiency can be improved and the process cost can be reduced. Optimized module The internal heat dissipation path effectively reduces the internal structure of the backlight module, thereby achieving a design that the module frame is extremely narrow, and the visible area is increased. DRAWINGS
- FIG. 1 is a schematic cross-sectional view showing a first embodiment of a backlight module of the present invention.
- FIG. 2 is a schematic cross-sectional view of a second embodiment of a backlight module of the present invention. detailed description
- the backlight module in this embodiment includes a light source 1, a PCB board 2, a back sheet 3, an optical member 4, a plastic frame 5, and a liquid crystal glass 6. among them:
- the PCB board 2 is provided with a bend, and the light source 1 is fixed on the PCB board 2 provided with the bend, and the PCB board 2 is fixedly connected with the back board 3;
- the plastic frame 5 is fastened to the bent PCB board 2 and the optical member 4, respectively, and the optical member 4 is pressed against the back plate 3; the liquid crystal glass 6 is fastened by the plastic frame 5.
- the light source 1 is constructed by an LED or an LED strip, which is packaged on the inner side of the bent PCB board 2.
- the PCB board 2 includes a horizontal board 21 and a vertical board 22, and the horizontal board 21 is a board disposed on the rear side of the backlight module, and is substantially parallel to the back board 3; the vertical board 22 is a board disposed in the frame area of the backlight module.
- the cross member 21 and the riser 22 may be perpendicular to each other in one embodiment.
- the light source LED is fastened to the middle of the inner side of the riser 22, and the back plate 3 is fastened to the inner side of the horizontal plate 21.
- the PCB board 2 can also be an MCPCB board, which does not affect the implementation of this embodiment.
- the optical member 4 is mounted on the light emitting side of the light source 1, and the optical member 4 is as shown in the figure. It includes at least a diffuser plate, a prism, a diffusion plate and a light guide plate from top to bottom.
- the plastic frame 5 is fastened to the optical member 4 provided with the bent PCB board 2 and the backlight module, which presses the optical member 4 against the back sheet 3.
- the plastic frame 5 includes a pressing block 51 and a frame plate 52 bent on the end side of the pressing block 51.
- the space between the pressing block 51 and the frame plate 52 can hold the vertical plate 22 to provide a folding
- the bent PCB board 2 can be fastened to the plastic frame 5.
- the pressing block 51 is provided with two pressing faces on the bottom side as shown, one pressing surface 511 is pressed against the end surface of the vertical plate 22, and the other pressing surface 512 is pressed against the optical component 4 near the light source 1. On the end.
- the pressing block 51 as shown has a flat surface on its top side for fastening to the liquid crystal glass 6.
- the frame plate 52 is attached to the end side of the press block 51, and the riser 22 of the PCB board is held between the two.
- the frame 52 is a plate disposed in the frame area of the backlight module. In this embodiment, the frame 52 is fastened.
- FIG. 2 is a schematic cross-sectional view showing a second embodiment of the backlight module of the present invention.
- the backlight module further includes a front frame 7, and the front frame 7 includes a front frame horizontal plate 71 and a front frame vertical plate 72.
- the front frame horizontal plate 71 is a plate member disposed on the front side of the backlight module, and is substantially parallel to the back plate 3;
- the front frame vertical plate 72 is a plate member disposed in the frame area of the backlight module, the front frame horizontal plate 71 and the front frame vertical plate
- the plates 72 are perpendicular to each other.
- the front frame transverse plate 71 presses the liquid crystal glass 6 against the pressing block 51, and the front frame vertical plate 72 is fastened to the outside of the frame plate 52.
- the backlight module of the present invention When the backlight module of the present invention is in operation, since the light source 1 is directly fixed on the PCB board 2 provided with the bending, the PCB board 2 and the back board 3 are fixedly connected, and the heat generated by the light source 1 can pass through the vertical board 21 of the PCB board. The horizontal plate 22 and the back plate 3 are conducted to further dissipate heat.
- the backlight module of the structure does not need to be provided with a heat dissipating device inside the frame area of the backlight module, such as aluminum extrusion. It not only saves the process of assembling the PCB board and the heat sink, saves materials, but also improves assembly efficiency and reduces process cost.
- the structure for dissipating heat from the PCB board 2 and the back board 3 replaces the structure that uses aluminum extrusion to dissipate heat, optimizes the heat dissipation path in the module, and effectively reduces the internal structure of the backlight module to realize the module.
- the extremely narrow design of the frame increases the area of the viewing area.
- the plastic frame 5 can be only used as the pressing block 51, but without the frame plate 52, the pressing block 51 can be integrated with the front frame vertical plate 72 of the front frame 7. That is to say, the front frame vertical plate 72 is directly fastened to the outside of the PCB riser 22; thus, the plastic frame 5 and the front frame 7 are equivalent to a common side frame plate, so that the frame of the backlight module is further narrowed.
- the present invention also discloses a liquid crystal display device, which includes the backlight module in any of the above embodiments, and details are not described herein again.
- the backlight module embodying the present invention and the liquid crystal display device using the same have the following beneficial effects: Since the PCB of the backlight module is provided with a bend, the heat generated by the light source can pass through the bent PCB board and the back The board conducts heat to achieve heat dissipation. The process of assembling the PCB board and the heat dissipating device can be omitted, the material can be saved, and the assembly efficiency can be improved and the process cost can be reduced. The heat dissipation path in the module is optimized, the internal structure of the backlight module is effectively reduced, and the design of the module edge is extremely narrowed, and the visible area is increased.
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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)
- Liquid Crystal (AREA)
- Planar Illumination Modules (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
Abstract
一种背光模组及具有背光模组结构的液晶显示装置,其中背光模组包括:光源(1)、PCB板(2)以及背板(3),PCB板(2)设有折弯,光源(1)固定在设有折弯的PCB板(2)上,PCB板(2)与背板(3)固定连接,用以传导光源(1)产生的热量。背光模组及液晶显示装置,能够优化背光模组内的散热路径,实现背光模组边框的极窄化设计。
Description
一种背 组及液晶显示装置 本申请要求于 2012 年 10 月 18 日提交中国专利局、 申请号为 201210397109.4、 发明名称为 "一种背光模组及液晶显示装置" 的中国专利 申请的优先权, 上述专利的全部内容通过引用结合在本申请中。 技术领域
本发明涉及液晶显示领域, 尤其涉及一种背光模组及液晶显示装置。 背景技术
液晶显示装置包括显示模组, 显示模组为了显示图像, 都需要用到背光 来提供光源, 现有的背光源主要为 CCFL ( Cold Cathode Fluorescent Lamp, 冷阴极萤光灯管 )和 LED ( Light Emitting Diode, 发光二极管)。 目前 LED 作为较新型的光源, 具有高亮度低功耗的优点, 故采用 LED背光的设计逐 渐增多, 亦为未来设计发展趋势; 但由于 LED 同时会产生高热量, 因此为 保证 LED出光效率和寿命, 需针对 LED进行散热设计。
现有技术中的背光模组,通常是将 LED封装在 PCB板或 MCPCB( Metal Core PCB, 金属基印刷电路板)板上形成灯条, 然后通过胶带或螺丝将其固 定在铝挤上, 最后将铝挤与背板锁固。 发明人发现, 该构架的背光模组已无 法满足背光模组边框极窄化的设计要求。 发明内容
本发明所要解决的技术问题在于, 提供一种背光模组及液晶显示装置, 能够优化背光模组内的散热路径, 实现背光模组边框的极窄化设计。
为了解决上述技术问题, 本发明采用的一个技术方案是: 提供一种背光 模组, 包括: 光源、 PCB板以及背板, 其中, 所述 PCB板设有折弯, 所述 光源固定在所述设有折弯的 PCB板上, 所述 PCB板与所述背板固定连接, 用以传导所述光源产生的热量;
所述 PCB板包括相互垂直连接的横板和竖板, 所述光源设置在所述竖 板的内侧, 所述背板紧固在所述横板的内侧;
所述背光模组还包括胶框, 所述胶框紧固在所述设有折弯的 PCB板和 背光模组的光学部材上, 其将所述光学部材抵压在所述背板上, 所述光学部 材至少包括扩散板, 棱镜, 扩散板及导光板。
其中, 所述背光模组还包括前框, 所述前框包括相互垂直的前框横板和 前框竖板, 所述前框横板抵压所述液晶玻璃紧固在所述胶框上;
所述前框竖板紧固在所述 PCB竖板的外侧。
为了解决上述技术问题, 本发明采用的另一个技术方案是: 提供一种背 光模组, 包括: 光源、 PCB板以及背板, 其中, 所述 PCB板设有折弯, 所 述光源固定在所述设有折弯的 PCB板上,所述 PCB板与所述背板固定连接, 用以传导所述光源产生的热量。
其中, 所述 PCB板包括相互垂直连接的横板和竖板;
所述光源设置在所述竖板的内侧, 所述背板紧固在所述横板的内侧或外 侧。
其中, 所述背光模组还包括胶框, 所述胶框紧固在所述设有折弯的 PCB 板和背光模组的光学部材上, 其将所述光学部材抵压在所述背板上。
其中, 所述胶框至少包括一压块,
所述压块的一侧设置两个压面, 其一个压面抵压在所述竖板的端面上, 其另 一个压面抵压在所述光学部材靠近所述光源的端部上。
其中, 与所述压块设置所述压面一侧相对的所述压块的另一侧紧固背光 模组的液晶玻璃。
其中, 自所述压块的一端侧折弯设有一框板, 所述框板紧固在所述 PCB 竖板的外侧。
其中, 所述背光模组还包括前框, 所述前框包括相互垂直的前框横板和 前框竖板, 所述前框横板抵压所述液晶玻璃紧固在所述压块上;
所述前框竖板紧固在所述框板的外侧。
其中, 所述背光模组还包括前框, 所述前框包括相互垂直的前框横板和 前框竖板, 所述前框横板抵压所述液晶玻璃紧固在所述压块上;
所述前框竖板紧固在所述 PCB竖板的外侧。
其中, 所述压块与所述前框竖板连为一体。
为了解决上述技术问题, 本发明采用的另一个技术方案是: 提供一种具 液晶显示装置, 其包括背光模组, 所述背光模组包括: 光源、 PCB板以及背 板, 其中, 所述 PCB板设有折弯, 所述光源固定在所述设有折弯的 PCB板 上, 所述 PCB板与所述背板固定连接, 用以传导所述光源产生的热量。
其中, 所述 PCB板包括相互垂直连接的横板和竖板;
所述光源设置在所述竖板的内侧, 所述背板紧固在所述横板的内侧或外 侧。
其中, 所述背光模组还包括胶框, 所述胶框紧固在所述设有折弯的 PCB 板和背光模组的光学部材上, 其将所述光学部材抵压在所述背板上。
其中, 所述胶框至少包括一压块,
所述压块的一侧设置两个压面, 其一个压面抵压在所述竖板的端面上, 其另 一个压面抵压在所述光学部材靠近所述光源的端部上。
其中, 与所述压块设置所述压面一侧相对的所述压块的另一侧紧固背光 模组的液晶玻璃。
其中, 自所述压块的一端侧折弯设有一框板, 所述框板紧固在所述 PCB 竖板的外侧。
其中, 所述背光模组还包括前框, 所述前框包括相互垂直的前框横板和 前框竖板, 所述前框横板抵压所述液晶玻璃紧固在所述压块上;
所述前框竖板紧固在所述框板的外侧。
其中, 所述背光模组还包括前框, 所述前框包括相互垂直的前框横板和 前框竖板, 所述前框横板抵压所述液晶玻璃紧固在所述压块上;
所述前框竖板紧固在所述 PCB竖板的外侧。
其中, 所述压块与所述前框竖板连为一体。
本发明所提供的背光模组及液晶显示装置, 具有如下有益效果: 由于背 光模组的 PCB板设有折弯, 光源产生的热量可以通过设有折弯的 PCB板和 背板进行传导, 进而实现散热。 可以省去 PCB板与散热装置进行组装的工 序流程, 节省材料、 而且还能够提高装配效率、 降低工艺成本。 优化了模组
内的散热路径, 有效减少背光模组内部架构从而实现模组边框极窄化的设 计, 增加了可视区面积。 附图说明
为了更清楚地说明本发明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筒单地介绍, 显而易见地, 下面 描述中的附图仅仅是本发明的一些实施例, 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获得其他的附图。
图 1是本发明背光模组实施例一的截面结构示意图。
图 2是本发明背光模组实施例二的截面结构示意图。 具体实施方式
下面参考附图对本发明的优选实施例进行描述。
如图 1所示, 本实施例中的背光模组包括光源 1、 PCB板 2、 背板 3、 光学部材 4、 胶框 5以及液晶玻璃 6。 其中:
PCB板 2设有折弯, 光源 1固定在设有折弯的 PCB板 2上, PCB板 2 与背板 3固定连接;
胶框 5分别紧固在设有折弯的 PCB板 2和光学部材 4上, 并将光学部 材 4抵压在背板 3上; 液晶玻璃 6由胶框 5紧固。
光源 1采用 LED或 LED灯条的结构,其封装在设有折弯 PCB板 2的内 侧。
PCB板 2包括相连接的横板 21和竖板 22, 横板 21为设置在背光模组 后侧的板件, 与背板 3大致平行; 竖板 22为设置在背光模组边框区域的板 件, 横板 21和竖板 22在一个实施例中可以相互垂直。
进一步的, 光源 LED紧固在竖板 22内侧的中部, 背板 3紧固在横板 21 的内侧。
PCB板 2也可以是 MCPCB板, 不影响本实施例的实施。
上述的横板 21、 竖板 22以及背板 3之间围挡的区域可用于容纳光学部 材 4。 本实施例中, 光学部材 4安装在光源 1的发光侧, 光学部材 4如图所
示从上至下至少包括扩散板, 棱镜, 扩散板及导光板等部材。
胶框 5紧固在设有折弯的 PCB板 2和背光模组的光学部材 4上, 其将 光学部材 4抵压在背板 3上。
具体的, 胶框 5包括一压块 51和弯折设置在压块 51—端侧的框板 52, 压块 51和框板 52之间的空间能够卡持上述竖板 22, 使设有折弯的 PCB板 2能够紧固在胶框 5上。
进一步的, 压块 51如图所示的底侧设置两个压面, 其一个压面 511抵 压在竖板 22的端面上, 其另一个压面 512抵压在光学部材 4靠近光源 1的 端部上。
如图所示的压块 51其顶侧为一平整平面, 用以与液晶玻璃 6紧固相连。 框板 52连接在压块 51的端侧, PCB板的竖板 22卡持在两者之间。 框 板 52为设置在背光模组边框区域的板件, 在本实施例中, 框板 52 紧固在
PCB竖板 22的外侧。
如图 2所示, 为本发明背光模组实施例二的截面结构示意图。
本实施例与上述实施例一的不同之处在于: 背光模组还包括前框 7, 前 框 7包括前框横板 71和前框竖板 72。
前框横板 71为设置在背光模组前侧的板件, 与背板 3大体平行; 前框 竖板 72为设置在背光模组边框区域的板件, 前框横板 71和前框竖板 72相 互垂直。
装配后, 前框横板 71将液晶玻璃 6抵压在压块 51上, 而前框竖板 72 紧固在框板 52的外侧。
本发明的背光模组在工作时, 由于光源 1 直接固定在设有折弯的 PCB 板 2上, PCB板 2与背板 3固定连接, 光源 1产生的热量可以通过 PCB板 的竖板 21、 横板 22以及背板 3进行传导, 进而实现散热。
也就是说, 该结构的背光模组无需在背光模组边框区域的内部设置散热 装置, 如铝挤。 其不但可以省去 PCB板与散热装置进行组装的工序流程, 节省材料、 而且还能够提高装配效率、 降低工艺成本。
此外, 由 PCB板 2和背板 3进行散热的结构替代使用铝挤进行散热的 结构, 优化了模组内的散热路径, 有效减少背光模组内部架构从而实现模组
边框极窄化的设计, 增加了可视区面积。
本发明背光模组的其他实施方式中,胶框 5可以仅设为压块 51 ,但不设 有框板 52, 压块 51可以与前框 7的前框竖板 72连为一体。 也就是说, 前框 竖板 72直接紧固在 PCB竖板 22的外侧; 这样, 胶框 5和前框 7相当于共 用一个侧框板, 使背光模组的边框进一步窄化。
本发明还公开了一种液晶显示装置,该液晶显示装置包括上述任一实施 例中的背光模组, 具体实施方式不再赘述。
实施本发明的背光模组及采用该背光模组的液晶显示装置, 具有如下有 益效果: 由于背光模组的 PCB板设有折弯, 光源产生的热量可以通过设有 折弯的 PCB板和背板进行传导, 进而实现散热。 可以省去 PCB板与散热装 置进行组装的工序流程, 节省材料、 而且还能够提高装配效率、 降低工艺成 本。 优化了模组内的散热路径, 有效减少背光模组内部架构从而实现模组边 框极窄化的设计, 增加了可视区面积。
以上所揭露的仅为本发明较佳实施例而已, 当然不能以此来限定本发明 之权利范围, 因此等同变化, 仍属本发明所涵盖的范围。
Claims
1、 一种背光模组, 包括: 光源、 PCB 板以及背板, 其中, 所述 PCB 板设有折弯, 所述光源固定在所述设有折弯的 PCB板上, 所述 PCB板与所 述背板固定连接, 用以传导所述光源产生的热量;
所述 PCB板包括相互垂直连接的横板和竖板, 所述光源设置在所述竖 板的内侧, 所述背板紧固在所述横板的内侧;
所述背光模组还包括胶框, 所述胶框紧固在所述设有折弯的 PCB板和 背光模组的光学部材上, 其将所述光学部材抵压在所述背板上, 所述光学部 材至少包括扩散板, 棱镜, 扩散板及导光板。
2、 如权利要求 1所述的背光模组, 其中, 所述背光模组还包括前框, 所述前框包括相互垂直的前框横板和前框竖板, 所述前框横板抵压所述液晶 玻璃紧固在所述胶框上;
所述前框竖板紧固在所述 PCB竖板的外侧。
3、 一种背光模组, 包括: 光源、 PCB板以及背板, 其中, 所述 PCB板 设有折弯, 所述光源固定在所述设有折弯的 PCB板上, 所述 PCB板与所述 背板固定连接, 用以传导所述光源产生的热量。
4、 如权利要求 3所述的背光模组, 其中, 所述 PCB板包括相互垂直连 接的横板和竖板;
所述光源设置在所述竖板的内侧, 所述背板紧固在所述横板的内侧或外 侧。
5、 如权利要求 3所述的背光模组, 其中, 所述背光模组还包括胶框, 所述胶框紧固在所述设有折弯的 PCB板和背光模组的光学部材上, 其将所 述光学部材抵压在所述背板上。
6、 如权利要求 5所述的背光模组, 其中, 所述胶框至少包括一压块, 所述压块的一侧设置两个压面, 其一个压面抵压在所述竖板的端面上, 其另 一个压面抵压在所述光学部材靠近所述光源的端部上。
7、 如权利要求 6所述的背光模组, 其中, 与所述压块设置所述压面一 侧相对的所述压块的另一侧紧固背光模组的液晶玻璃。
8、 如权利要求 6所述的背光模组, 其中, 自所述压块的一端侧折弯设
有一框板, 所述框板紧固在所述 PCB竖板的外侧。
9、 如权利要求 8所述的背光模组, 其中, 所述背光模组还包括前框, 所述前框包括相互垂直的前框横板和前框竖板, 所述前框横板抵压所述液晶 玻璃紧固在所述压块上;
所述前框竖板紧固在所述框板的外侧。
10、 如权利要求 6所述的背光模组, 其中, 所述背光模组还包括前框, 所述前框包括相互垂直的前框横板和前框竖板, 所述前框横板抵压所述液晶 玻璃紧固在所述压块上;
所述前框竖板紧固在所述 PCB竖板的外侧。
11、 如权利要求 10所述的背光模组, 其中, 所述压块与所述前框竖板 连为一体。
12、 一种液晶显示装置, 所述液晶显示装置包括背光模组, 其中, 所述 背光模组包括: 光源、 PCB板以及背板, 所述 PCB板设有折弯, 所述光源 固定在所述设有折弯的 PCB板上, 所述 PCB板与所述背板固定连接, 用以 传导所述光源产生的热量。
13、 如权利要求 12所述的液晶显示装置, 其中, 所述 PCB板包括相互 垂直连接的横板和竖板;
所述光源设置在所述竖板的内侧, 所述背板紧固在所述横板的内侧或外 侧。
14、 如权利要求 12所述的液晶显示装置, 其中, 所述背光模组还包括 胶框, 所述胶框紧固在所述设有折弯的 PCB板和背光模组的光学部材上, 其将所述光学部材抵压在所述背板上。
15、 如权利要求 14所述的液晶显示装置, 其中, 所述胶框至少包括一 压块,
所述压块的一侧设置两个压面, 其一个压面抵压在所述竖板的端面上, 其另 一个压面抵压在所述光学部材靠近所述光源的端部上。
16、 如权利要求 15所述的液晶显示装置, 其中, 与所述压块设置所述 压面一侧相对的所述压块的另一侧紧固背光模组的液晶玻璃。
17、 如权利要求 15所述的液晶显示装置, 其中, 自所述压块的一端侧
折弯设有一框板, 所述框板紧固在所述 PCB竖板的外侧。
18、 如权利要求 17所述的液晶显示装置, 其中, 所述背光模组还包括 前框, 所述前框包括相互垂直的前框横板和前框竖板, 所述前框横板抵压所 述液晶玻璃紧固在所述压块上;
所述前框竖板紧固在所述框板的外侧。
19、 如权利要求 15所述的液晶显示装置, 其中, 所述背光模组还包括 前框, 所述前框包括相互垂直的前框横板和前框竖板, 所述前框横板抵压所 述液晶玻璃紧固在所述压块上;
所述前框竖板紧固在所述 PCB竖板的外侧。
20、 如权利要求 19所述的液晶显示装置, 其中, 所述压块与所述前框 竖板连为一体。
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CN102620203A (zh) * | 2012-03-27 | 2012-08-01 | 深圳市华星光电技术有限公司 | 一种背光模组及液晶显示装置 |
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