WO2013152594A1 - 液晶显示装置 - Google Patents

液晶显示装置 Download PDF

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Publication number
WO2013152594A1
WO2013152594A1 PCT/CN2012/085203 CN2012085203W WO2013152594A1 WO 2013152594 A1 WO2013152594 A1 WO 2013152594A1 CN 2012085203 W CN2012085203 W CN 2012085203W WO 2013152594 A1 WO2013152594 A1 WO 2013152594A1
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WO
WIPO (PCT)
Prior art keywords
bent portion
liquid crystal
heat sink
crystal display
display device
Prior art date
Application number
PCT/CN2012/085203
Other languages
English (en)
French (fr)
Inventor
王庆江
Original Assignee
京东方科技集团股份有限公司
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
Application filed by 京东方科技集团股份有限公司 filed Critical 京东方科技集团股份有限公司
Publication of WO2013152594A1 publication Critical patent/WO2013152594A1/zh

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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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20954—Modifications to facilitate cooling, ventilating, or heating for display panels
    • H05K7/20963—Heat transfer by conduction from internal heat source to heat radiating structure
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133317—Intermediate frames, e.g. between backlight housing and front frame
    • 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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133628—Illuminating devices with cooling 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/36—Airflow channels, e.g. constructional arrangements facilitating the flow of air

Definitions

  • the present disclosure relates to liquid crystal display technology, and more particularly to a liquid crystal display device. Background technique
  • the light guide plate has multiple layers of space, eliminating the back plate and frame. In this way, the light guide plate is complicated to form, and the strength of the light guide plate is insufficient, and the vibration shock resistance is poor.
  • the light guide plate, the optical film material, and the like are thinned and the multilayer is bonded using an adhesive.
  • the brightness of the liquid crystal display device in this manner is lowered due to excessive use of the adhesive.
  • the present disclosure provides a liquid crystal display device that realizes fixing of a liquid crystal panel, removes a plastic frame, and saves cost.
  • the present disclosure provides a liquid crystal display device including a back panel, a liquid crystal panel disposed above the back panel, wherein the back panel is provided with a bending structure for fixing the liquid crystal Screen.
  • the bending structure on the backboard includes a plurality of bends, and each of the at least three sides of the back panel is provided with the bend.
  • the bending structure includes a first bending portion, a second bending portion and a third bending portion, which together form a ⁇ shape; wherein the second bending portion connects the first bending portion and the third folding portion a curved portion extending parallel to a plane of the back plate and perpendicular to an extending direction of the first bent portion and the third bent portion, wherein the first bent portion and the third bent portion extend in parallel
  • the liquid crystal panel is placed above the second bent portion.
  • the bending structure on the backboard includes a sub-bend portion, and the sub-bend portion is disposed on the second bent portion of the backboard and extends perpendicularly to the second bent portion.
  • the side surface of the liquid crystal panel abuts against the sub-bend portion via a cushion.
  • the heat sink is provided with a bending structure
  • the bending structure on the heat sink includes a first bending portion, a second bending portion and a third bending portion; wherein the first bending portion and The third bent portion is parallel, and the extending direction is parallel to the direction of the back plate, and the second bent portion connects the first bent portion and the third bent portion, and the extending direction thereof is perpendicular to the first bent portion and the third bent portion
  • the extending direction of the portion, the first bent portion, the second bent portion, and the third bent portion constitute a U-shaped structure, and the opening faces the inner side of the liquid crystal display device.
  • the length of the third bent portion disposed on the heat sink is greater than the length of the first bent portion disposed on the heat sink, and the third bent portion is fixed with the back plate;
  • the second bent portion is located on the same plane as the first bent portion of the heat sink.
  • the first bent portion of the heat sink is provided with a sub-bend portion, and the sub-bend portion extends upward perpendicular to the first bent portion, and the side of the liquid crystal panel is slowed The pad abuts against the sub-bend of the heat sink.
  • the liquid crystal display device further includes an outer frame, the outer frame includes a substantially annular top surface portion, and a side bent portion vertically connected to the top surface portion and disposed on four sides of the liquid crystal display device, The outer frame is mounted with the backboard to accommodate the liquid crystal panel.
  • the side bent portion is provided with a plurality of recesses adjacent to the top surface portion, the recesses corresponding to the protrusions of the back plate and the convex positions of the heat sink.
  • the folding structure and the protrusion can be disposed on the back plate, and the folding structure on the heat sink can be used to fix the liquid crystal screen, thereby removing the plastic frame and saving cost.
  • Figure 1 is a schematic view of the overall assembly of the embodiment of the present disclosure
  • 2-1 to 2-3 are schematic diagrams of a backboard according to an embodiment of the present disclosure.
  • 3-1 and 3-2 are schematic structural views of a backboard and a heat sink according to an embodiment of the present disclosure
  • FIG. 4-1 to 4-2 are schematic views of the outer frame mounting of the embodiment of the present disclosure
  • 5-1 is a schematic structural view of a light guide plate bump and a back plate square groove according to an embodiment of the present disclosure
  • FIG. 5-2a is a schematic structural view of a light bend of a light guide plate and a back side of the back plate according to an embodiment of the present disclosure
  • -2b is a structural schematic view of the sub-bending of the side of the light guide plate and the back plate of the embodiment of the present disclosure
  • FIG. 5 - 3a is a schematic structural view of the sub-bending of the side of the light guide plate and the back plate of the embodiment of the present disclosure
  • -3b is a schematic structural view of a positioning post of a light guide plate and a heat sink according to an embodiment of the present disclosure
  • FIG. 6-1 is a schematic structural view of a square groove of a film material and a back plate according to an embodiment of the present disclosure
  • 6-2 is a schematic structural view of a film positioning point of a first bend of a film and a back sheet according to an embodiment of the present disclosure
  • 6-3 is a schematic structural view of a first bending limit of a film and a heat sink according to an embodiment of the present disclosure. detailed description
  • the bending and the sub-bending may be provided on the backboard, and the bending structure on the heat sink is matched to fix the liquid crystal panel, so that the plastic frame can be omitted to save cost.
  • FIG. 1 shows an edge-lit LED backlight liquid crystal module according to the present disclosure, which may include, for example, a bezel 1, a liquid crystal panel 2, an optical film 3, a light guide plate 4, a bottom reflection sheet 5, a back sheet 6, and a heat sink 7. , LED light bar 8, screws 9-1, 9-2, etc.
  • the LED strip 8 is attached to the heat sink 7, and may be bonded or screwed, or a combination of the two for fixing.
  • the heat sink 7 to which the LED strip 8 is fixed is connected to the back plate 6 by screws 9-1.
  • the outer frame 1 and the back plate 6 are joined together by screws 9-2.
  • the +Z direction is perpendicular to the display screen.
  • the position away from the center of the liquid crystal module is the outer side
  • the position close to the center of the liquid crystal module is the inner side.
  • FIGS 2-1 through 2-3 illustrate a backing plate 6 in accordance with an embodiment of the present disclosure.
  • the backing plate 6 may include a bottom plate 6-1.
  • the bottom plate 6-1 is, for example, rectangular, and the upper edge, the left edge, and the right edge of the rectangle are respectively provided with a side group 6-2, as shown in FIG.
  • each side group 6-2 includes three bent portions which are sequentially formed along the sides of the bottom plate: a bent portion 6-2-1, a bent portion 6-2-2 and the bent portion 6-2-3; the bent portion 6-2-1 and the bottom plate 6-1 are vertically connected, and the bent portion 6-2-2 is respectively bent with the bent portion 6-2-1 and The bent portions 6-2-3 are vertically connected, and the opening direction formed by the three bent portions is the -Z direction.
  • the plurality of sub-bend portions 6-2-2-1 are provided on the bent portion 6-2-2.
  • the sub-bend portion 6-2-2-1 extends upward perpendicular to the second bent portion.
  • the sub-bend 6-2-2-1 may be in the form of a raised sheet or a raised hollow frame.
  • the cushion 6-4 formed of a single-sided tape can be attached directly to the sheet-like sub-bend 6-2-2-1 or embedded in the sub-bend 7 of the frame by bonding. -1-1 inside.
  • the peripheral side wall of the liquid crystal panel 2 abuts against the cushion 6-4, and is positioned in three directions of "+X", "_ ⁇ ', "_ ⁇ ", etc. As shown in Fig.
  • a reinforcing rib 6-1-1 which is convex in the - ⁇ direction is provided to enhance the flatness of the entire structure.
  • the rib 6-1-1 may have an "L" shape.
  • Figures 3-1 and 3-2 show the mounting structure of the backing plate 6 and the heat sink 7 according to an embodiment of the present disclosure.
  • the heat sink 7 is mounted on the lower edge side of the bottom plate 6-1, and includes three bent portions: a bent portion 7-1, a bent portion 7-2, and The bent portion 7-3, wherein the bent portion 7-1 extends in the same direction as the bent portion 7-3, that is, in a direction parallel to the plane of the backing plate 6, and is connected to the bent portion 7-2 .
  • the bent portion 7-1, the bent portion 7-2, and the bent portion 7-3 constitute a U-shaped structure, and the opening faces the inside of the liquid crystal display device.
  • the bent portion 7-3 is located at the lower portion, and a screw hole is provided thereon to fix the heat sink 7 upward from the bottom of the back plate 6 using the screw 9-1.
  • a sub-bend portion 7-1-1 is provided on the bent portion 7-1.
  • the sub-bend portion 7-1-1 extends upward perpendicular to the bent portion 7-1.
  • the sub-bend 7-1-1 may be in the form of a raised piece or a raised hollow frame.
  • the cushion 6-4 formed of a single-sided tape can be attached directly to the sheet-like sub-bend 7-1-1 or embedded in the sub-bend 7-1 of the frame by bonding. -1 inside. As shown in FIG. 3-2 and FIG.
  • the bent portion 6-2-2 of the backboard 6 and the bent portion 7-1 of the heat sink 7 form a plane, and the liquid crystal panel 2 is placed on the plane, and as shown in FIG. 2-2, the liquid crystal panel 2 and A cushion 6-3 is placed along the edge of the backing plate 6 between the bent portions 6-2-2 of the backboard. This realizes the positioning of the liquid crystal panel 2 in the - ⁇ direction.
  • Figure 4-1 and Figure 4-2 show the mounting structure of the outer frame 1.
  • the outer frame 1 and the back plate 6 are mounted together to accommodate components such as the liquid crystal panel 2, the light guide plate 4, and the optical film 3.
  • the outer frame 1 includes a top surface portion 1-1, which is respectively located on the side curved portion 1-2 and the cushion pad 1-3 of the liquid crystal display device, wherein the top surface portion 1-1 and the side curved portion 1-2 vertical connections, extending in the - ⁇ direction.
  • the center of the top surface portion 1-1 is a rectangular opening 1-1-1, and the rectangular opening 1-1-1 is a visible area of the liquid crystal display module, so the top The face 1-1 is substantially annular.
  • the top surface portion 1-1 of the frame is formed with a plurality of concave portions 1-1-2 at a position close to the side curved portion 1-2 by, for example, press. .
  • the cushion pad 1-3 is attached to the lower surface of the top surface portion 1-1, and a gap is provided between the cushion pad 1-3 and the upper surface of the liquid crystal panel 2, as shown in Fig. 4-2.
  • the concave portion 1-1-2 corresponds to the sub-bend 7-1-1 on the fin 7 in position, and the inner side of the concave portion 1-1-2 is opposed to the above-mentioned projection 7
  • the outer side of -1-1, and a proper gap is left in the middle.
  • the recessed portion 1-1-2 may also correspond in position to the sub-bend portion 6-2-2-1 on the back plate 6, such that the groove 1-1-2 on the outer frame 1 during vibration.
  • the structural strength of the corresponding sub-bends on the backboard 6 and the fins 7 can be strengthened to prevent the corresponding sub-bends from being crushed and deformed.
  • the outer frame 1 and the heat sink 7 are connected by screws 9-2 to realize the positioning of the liquid crystal panel 2 in the +Z and -Z directions.
  • the light guide plate 4 is inserted into the back plate 6 along the -Y direction.
  • a plurality of sub-bend portions 6-2-1-2 are provided on the bent portion 6-2-1 in the +X and -X directions of the back plate, and the sub-bend portion 6-2-1-
  • the extending direction of 2 is perpendicular to the extending direction of the bent portion 6-2-1 and extends toward the center of the liquid crystal panel 2.
  • the sub-bends may be in the form of a convex sheet.
  • the sub-bend portion 6-2-1-2 forms a cavity having an opening in the +Y direction below the liquid crystal panel 2 to insert the light guide plate 4 into the cavity in the -Y direction.
  • the light guide plate 4 is provided with a bump 4-2.
  • the bump 4-2 of the light guide plate 4 projects into the square groove 6-2-1 in the -Y direction.
  • the edge of the light guide plate 4 along the X direction is provided with a groove 4-1
  • the bent portion 7-3 of the heat sink 7 is provided with a positioning post 7- 3-1
  • the positioning post 7-3-1 is in contact with the groove 4-1 of the light guide plate 4, and the position of the light guide plate 4 in the directions of + ⁇ , - ⁇ , + ⁇ , - ⁇ , etc. is realized.
  • 6- 2-1-2 and square groove 6-2-1-1, etc. also work together to achieve the positioning of the light guide plate in the ⁇ direction. Fix the heat sink 7 and the back plate 6 together with the screw 9-1.
  • the positioning of the optical film 3 disposed on the light guide plate 4 may be based on each bent portion of the back plate 6, the square groove 6-2-1-1 of the back plate 6, and A bent portion of the heat sink 7 or the like.
  • the bending structure is disposed on the heat sink as an example.
  • a folding structure may be disposed on other supporting structures on the backboard other than the heat sink to match the folding structure provided on the backboard to fix the liquid crystal panel.
  • the liquid crystal screen fixing structure of the present disclosure can be provided with a bent portion and a sub-bend portion on the back plate, and the folding structure on the support structure is used to fix the liquid crystal screen, thereby removing the plastic frame. Save costs.
  • the above embodiments are merely illustrative of the present invention and are not to be construed as limiting the scope of the invention, and various modifications and changes can be made without departing from the spirit and scope of the invention. Equivalent technical solutions are also within the scope of the invention, and the scope of the invention is defined by the claims.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)

Abstract

一种液晶显示装置，包括背板（6）和设置于背板（6）上方的液晶屏（2）。所述背板（6）上设置有折弯结构，用于固定所述液晶屏（2），从而省去胶框。

Description

液晶显示装置 技术领域
本公开涉及液晶显示技术， 特别涉及一种液晶显示装置。 背景技术
在传统的液晶显示装置中， 存在以下的几种固定液晶屏的方式：
1、 导光板含多层空间， 省去背板与框架。 釆用这种方式， 导光板成型 复杂， 且导光板强度不足， 抗振动冲击性能差。
2、 背框结构多级冲压成型， 省去框架。 釆用这种方式， 成型难度大。
3、 将导光板、 光学膜材等薄型化并使用粘接剂将多层粘接。 由于过多 使用粘接剂， 釆用这种方式的液晶显示装置的亮度会降低。
4、 将用于取代整个框架的独立承接装置安装在背板上， 以支撑液晶屏。 釆用这种方式， 独立承接装置需要注塑成型， 会产生额外费用。 发明内容
有鉴于此， 本公开提供一种液晶显示装置， 实现液晶屏的固定， 去除胶 框， 节省成本。
根据一个方面， 本公开提供了一种液晶显示装置， 包括背板， 设置于所 述背板上方的液晶屏， 其特征在于， 所述背板上设置有折弯结构， 用于固定 所述液晶屏。
在一个示例中， 背板上的所述折弯结构包括多个折弯部， 背板的至少三 个边上各设置一该折弯部。
在一个示例中， 所述折弯结构包括第一折弯部， 第二折弯部和第三折弯 部， 共同形成 π型； 其中第二折弯部连接第一折弯部和第三折弯部， 其延伸 方向平行于所述背板的平面并分别与第一折弯部、 第三折弯部的延伸方向垂 直， 第一折弯部与第三折弯部的延伸方向平行， 所述液晶屏放置于所述第二 折弯部上方。
在一个示例中， 背板上的所述折弯结构包括子折弯部， 所述子折弯部设 置于背板上的第二折弯部上， 且与第二折弯部垂直延伸， 所述液晶屏的侧面 经由緩冲垫抵靠所述子折弯部。 在一个示例中， 所述散热片上设置有折弯结构， 所述散热片上的折弯结 构包括第一折弯部、 第二折弯部和第三折弯部； 其中， 第一折弯部和第三折 弯部平行， 且延伸方向平行于背板方向， 第二折弯部连接第一折弯部和第三 折弯部， 且其延伸方向垂直于第一折弯部和第三折弯部的延伸方向， 第一折 弯部、 第二折弯部和第三折弯部组成 U型结构， 且开口朝向液晶显示装置的 内侧。
在一个示例中，设置于散热片上的第三折弯部的长度大于设置于散热片 上的第一折弯部长度， 且第三折弯部与所述背板固定在一起； 所述背板的第 二折弯部与所述散热片的第一折弯部位于同一平面。
在一个示例中， 所述散热片的所述第一折弯部上设置有子折弯部， 所述 子折弯部垂直于第一折弯部向上延伸， 所述液晶屏的侧部经由緩冲垫抵靠所 述散热片的子折弯部。
在一个示例中， 所述液晶显示装置还包括外框， 所述外框包括大致呈环 状的顶面部和与所述顶面部垂直连接并设置于所述液晶显示装置四边的侧面 折弯部， 所述外框与所述背板安装在一起， 容纳所述液晶屏。
在一个示例中， 所述侧面折弯部在邻近顶面部设置有多个凹部， 所述凹 部与所述背板的凸起和所述散热片的凸起位置对应。
根据本公开， 可以在背板上设置折弯结构和凸起， 配合散热片上的折弯 结构， 实现了对液晶屏的固定， 借此去除胶框， 节省了成本。 附图说明
为了更清楚地说明本公开或现有技术中的技术方案， 下面将对本公开提 供的技术方案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公开的技术方案的部分具体实施方式图示说 明， 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为本公开实施例的整体装配示意图；
图 2-1至 2-3为本公开一实施例的背板示意图；
图 3-1和 3-2为本公开实施例的背板与散热片的结构示意图；
图 4-1至 4-2为本公开实施例的外框安装的示意图； 图 5-1为本公开实施例的导光板凸块与背板方形槽的结构示意图； 图 5-2a为本公开实施例的导光板与背板侧边的子折弯的结构示意图； 图 5-2b为本公开实施例的导光板与背板侧边的子折弯的结构示意图； 图 5-3a为本公开实施例的导光板与背板侧边的子折弯的结构示意图； 图 5-3b为本公开实施例的导光板与散热片的定位柱的结构示意图； 图 6-1为本公开实施例的膜材与背板的方形槽的结构示意图；
图 6-2为本公开实施例的膜材与背板的第一折弯的膜材定位点的结构示 意图；
图 6-3为本公开实施例的膜材与散热片的第一折弯限位的结构示意图。 具体实施方式
下面将结合本公开实施例中的附图， 对本公开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公开一部分实施例， 而 不是全部的实施例。 基于本公开中的实施例， 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， 都属于本公开保护的范围。
下面结合附图和实施例， 对本公开的具体实施方式作进一步详细描述。 以下实施例用于说明本公开， 但不用来限制本公开的范围。
在本公开的实施方式中， 可以在背板上设置折弯和子折弯， 配合散热片 上的折弯结构， 实现对液晶屏的固定， 由此可以省略胶框， 以节省成本。
图 1示出了根据本公开的侧光式 LED背光液晶模块， 其例如可以包括 外框 1、 液晶屏 2、 光学膜材 3、 导光板 4、 底反射片 5、 背板 6、 散热片 7、 LED灯条 8、 螺钉 9-1、 9-2等。 LED灯条 8固定在散热片 7上， 可以是粘接 或螺钉连接， 或是二者结合以进行固定。 通过螺钉 9-1将固定有 LED灯条 8 的散热片 7和背板 6连接在一起。外框 1和背板 6通过螺钉 9-2连接在一起。 如图 1所示， +Z方向为垂直于显示屏的方向， 在本文中， 远离液晶模块中心 的位置为外侧， 紧靠液晶模块中心的位置为内侧。
图 2-1至图 2-3示出了根据本公开的实施例的背板 6。
背板 6可以包括底板 6-1。 底板 6-1例如为矩形， 矩形的上边缘、 左边 缘、 右边缘分别设置有侧边组 6-2, 如图 2-1所示。 如图 2-2和图 2-3所示每 个侧边组 6-2包括沿底板的边依次形成的 3个折弯部： 折弯部 6-2-1、 折弯部 6-2-2和折弯部 6-2-3; 折弯部 6-2-1和底板 6-1垂直连接， 折弯部 6-2-2分别 与折弯部 6-2-1和折弯部 6-2-3垂直相连，上述 3个折弯部形成的开口方向为 -Z方向。 其中折弯部 6-2-2上设有多个子折弯部 6-2-2-1。 子折弯部 6-2-2-1 垂直于第二折弯部向上延伸。子折弯部 6-2-2-1可以为凸起的片或者凸起的中 空的框架的形式。 例如由单面带胶形成的緩冲垫 6-4可直接通过粘接的方式 贴附在片状的子折弯部 6-2-2-1上或者嵌入在呈框架的子折弯部 7-1-1内侧。 在液晶屏 2的平面定位时，液晶屏 2的周边侧壁紧靠着緩冲垫 6-4,在 "+X"、 "_χ'，、 "_γ" 等 3个方向上实现定位。 如图 2-2所示， 在没有侧边组 6-2的 底板 6-1的下边缘一侧，设有在 -Ζ方向凸起的加强筋 6-1-1以增强整个结构的 平整性。 加强筋 6-1-1可以为 "L" 形状。
图 3-1和图 3-2显示了根据本公开的实施例的背板 6和散热片 7的安装 结构。 如图 3-1和图 3-2所示， 散热片 7安装于底板 6-1的下边缘一侧， 其包 括 3个折弯部： 折弯部 7-1、 折弯部 7-2和折弯部 7-3 , 其中折弯部 7-1与折 弯部 7-3的延伸方向相同， 即沿平行于背板 6的平面的方向延伸， 且都与折 弯部 7-2相连接。 折弯部 7-1、 折弯部 7-2和折弯部 7-3组成 U型结构， 且开 口朝向液晶显示装置的内侧。 折弯部 7-3位于下部， 且其上设置螺紋孔， 以 便使用螺钉 9-1从背板 6的底部向上固定散热片 7。在折弯部 7-1上设置有子 折弯部 7-1-1 。 子折弯部 7-1-1垂直于折弯部 7-1向上延伸。 子折弯部 7-1-1 可以为凸起的片或者凸起的中空的框架的形式。 例如由单面带胶形成的緩冲 垫 6-4可直接通过粘接的方式贴附在片状的子折弯部 7-1-1上或者嵌入在呈框 架的子折弯部 7-1-1内侧。 如图 3-2和以后将详细说明的图 4-2所示， 在液晶 屏 2的平面定位时， 液晶屏 2的下边缘侧面紧靠着子折弯部 7-1-1上的緩冲 垫 6-4, 实现了液晶屏 2在 "+Υ" 方向上的定位。
背板 6的折弯部 6-2-2与散热片 7的折弯部 7-1构成一个平面，液晶屏 2 便放置在该平面上，且如图 2-2所示， 液晶屏 2与背板的折弯部 6-2-2之间沿 背板 6的边缘放置緩冲垫 6-3。 这样就实现了液晶屏 2在 -Ζ方向的定位。
图 4-1和图 4-2显示了外框 1的安装结构。外框 1与背板 6安装在一起， 容纳液晶屏 2、导光板 4以及光学膜材 3等构件。如图 4-1所示， 外框 1包括 顶面部 1-1 , 分别位于液晶显示装置四边的侧面折弯部 1-2和緩冲垫 1-3 , 其 中顶面部 1-1与侧面折弯部 1-2垂直连接， 沿 -Ζ方向延伸。 顶面部 1-1的中 心为矩形开口 1-1-1 , 该矩形开口 1-1-1为液晶显示模块的可视区域， 因此顶 面部 1-1大致呈环状。框架的顶面部 1-1在靠近侧面折弯部 1-2的位置例如通 过冲压形成有多个凹部 1-1-2。。 緩冲垫 1-3粘贴在顶面部 1-1的下表面， 緩 冲垫 1-3与液晶屏 2的上表面之间设置有间隙， 如图 4-2所示。
特别地， 如图 4-2所示， 凹部 1-1-2与散热片 7上的子折弯 7-1-1在位置 上对应， 凹部 1-1-2的内侧靠着上述凸起 7-1-1的外侧， 并且中间留有适当缝 隙。 另外， 凹部 1-1-2也可以与背板 6上的子折弯部 6-2-2-1在位置上对应、 这样， 在振动时， 外框 1上的凹槽 1-1-2可以加强背板 6和散热片 7上的对 应子折弯部的结构强度， 避免对应子折弯部被挤压变形。 外框 1与散热片 7 通过螺钉 9-2连接在一起， 实现了液晶屏 2在 +Z和 -Z方向上的定位。
如图 5-1所示， 导光板 4沿着 -Y方向， 插入背板 6之中。
如图 5-1 , 背板 -Y方向的折弯部 6-2-1上开有若干方形槽 6-2-1-1 , 如图
5- 2a所示， 背板 +X、 -X方向的折弯部 6-2-1上设有多个子折弯部 6-2-1-2, 该 子折弯部 6-2-1-2的延伸方向垂直于折弯部 6-2-1的延伸方向， 且向液晶屏 2 中心延伸。 子折弯部可以为凸起的片状形式。 这样， 子折弯部 6-2-1-2在液晶 屏 2下方形成了一个 +Y方向上开孔的空腔可以将导光板 4沿着 -Y方向插入 该空腔。 如图 5-1所示， 导光板 4上设置有凸块 4-2。
导光板 4的凸块 4-2沿着 -Y方向伸入方形槽 6-2-1。 如图 5-3a所示， 导 光板 4的沿 X方向的边缘设有凹槽 4-1 , 而如图 5-3b所示， 散热片 7的折弯 部 7-3设有定位柱 7-3-1 , 该定位柱 7-3-1与导光板 4的凹槽 4-1接触， 实现 导光板 4在 +Χ、 -Χ、 +Υ、 -Υ等方向上的定位。 导光板 4插入背板 6之后， 再将散热片 7插入导光板 4, 散热片 7 的折弯部 7-3与背板 6的子折弯部
6- 2-1-2以及方形槽 6-2-1-1等也共同作用实现了导光板在 Ζ方向的定位。 用 螺钉 9-1将散热片 7和背板 6固定在一起。
如图 6-1至 6-3所示， 设置于导光板 4上的光学膜材 3的定位可以基于 背板 6的各折弯部、 背板 6的方形槽 6-2-1-1以及散热片 7的折弯部等。
最后， 需要说明的是， 以上描述中均以在散热片上设置折弯结构为例。 实际上， 也可以在除散热片以外的背板上的其它支撑结构上设置折弯结构， 以配合背板上所设置的折弯结构实现对液晶屏的固定。
综上所述， 本公开的液晶屏固定结构， 可以在背板上设置折弯部和子折 弯部， 配合支撑结构上的折弯结构， 实现了对液晶屏的固定， 借此去除胶框， 节省了成本。 以上实施方式仅用于说明本发明， 而并非对本发明的限制， 有关技术领 域的普通技术人员， 在不脱离本发明的精神和范围的情况下， 还可以做出各 种变化和变型， 因此所有等同的技术方案也属于本发明的范畴， 本发明的专 利保护范围应由权利要求限定。

Claims

权利要求书
1、 一种液晶显示装置， 包括背板， 设置于所述背板上方的液晶屏， 其 特征在于， 所述背板上设置有折弯结构， 用于固定所述液晶屏。
2、 根据权利要求 1 所述的液晶显示装置， 其特征在于， 背板上的所述 折弯结构包括多个折弯部， 背板的至少三个边上各设置一该折弯部。
3、 根据权利要求 2所述的液晶显示装置， 其特征在于， 所述折弯结构 包括第一折弯部， 第二折弯部和第三折弯部， 共同形成 π型； 其中第二折弯 部连接第一折弯部和第三折弯部， 其延伸方向平行于所述背板的平面并分别 与第一折弯部、 第三折弯部的延伸方向垂直， 第一折弯部与第三折弯部的延 伸方向平行， 所述液晶屏放置于所述第二折弯部上方。
4、 根据权利要求 1至 3任一项所述的液晶显示装置， 其特征在于， 背 板上的所述折弯结构包括子折弯部， 所述子折弯部设置于背板上的第二折弯 部上， 且与第二折弯部垂直延伸， 所述液晶屏的侧壁经由緩冲垫抵靠在所述 子折弯部上。
5、 根据前述权利要求任一所述的液晶显示装置， 其特征在于， 还包括 设散热片； 所述散热片上设置有折弯结构， 所述散热片上的折弯结构包括第 一折弯部、 第二折弯部和第三折弯部； 其中， 第一折弯部和第三折弯部平行， 且延伸方向平行于背板方向， 第二折弯部连接第一折弯部和第三折弯部， 且 其延伸方向垂直于第一折弯部和第三折弯部的延伸方向， 第一折弯部、 第二 折弯部和第三折弯部组成 U型结构， 且开口朝向液晶显示装置的内侧。
6、 根据权利要求 5所述的液晶显示装置， 其特征在于， 设置于散热片 上的第三折弯部的长度大于设置于散热片上的第一折弯部长度， 且第三折弯 部与所述背板固定在一起； 所述背板的第二折弯部与所述散热片的第一折弯 部位于同一平面。
7、 根据权利要求 5或 6所述的液晶显示装置， 其特征在于， 所述散热 片的所述第一折弯部上设置有子折弯部， 所述散热片上的子折弯部垂直于所 述散热片的第一折弯部向上延伸， 所述液晶屏的侧部经由緩冲垫抵靠所述散 热片的子折弯部。
8、 根据前述权利要求任一所述的液晶显示装置， 其特征在于还包括外 框， 所述外框包括大致呈环状的顶面部和与所述顶面部垂直连接并设置于所 述液晶显示装置四边的侧面折弯部， 所述外框与所述背板安装在一起， 容纳 所述液晶屏。
9、 根据权利要求 8所述的液晶显示装置， 其特征在于所述侧面折弯部 在邻近顶面部设置有多个凹部， 所述凹部与所述背板的子折弯部和所述散热 片的子折弯部在位置上对应。
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