WO2020140847A1 - 一种液晶显示装置 - Google Patents

一种液晶显示装置 Download PDF

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Publication number
WO2020140847A1
WO2020140847A1 PCT/CN2019/129387 CN2019129387W WO2020140847A1 WO 2020140847 A1 WO2020140847 A1 WO 2020140847A1 CN 2019129387 W CN2019129387 W CN 2019129387W WO 2020140847 A1 WO2020140847 A1 WO 2020140847A1
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WO
WIPO (PCT)
Prior art keywords
liquid crystal
display device
crystal display
middle frame
side wall
Prior art date
Application number
PCT/CN2019/129387
Other languages
English (en)
French (fr)
Inventor
闫光伟
唐志强
程宁宁
韩建国
Original Assignee
海信视像科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201910100426.7A external-priority patent/CN111399269B/zh
Application filed by 海信视像科技股份有限公司 filed Critical 海信视像科技股份有限公司
Priority to US16/792,490 priority Critical patent/US11067852B2/en
Publication of WO2020140847A1 publication Critical patent/WO2020140847A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods

Definitions

  • the present application relates to the field of display technology, in particular to a liquid crystal display device.
  • the LCD TVs generally include a backlight module and a liquid crystal panel. According to the different ways of entering light in the backlight module, the backlight module can be divided into a direct type backlight module and a side type backlight module.
  • the direct type backlight module has its advantages in achieving picture quality effects, and the LCD TV with the direct type backlight module occupies an important position in the market. At present, ultra-thin, ultra-narrow, borderless, etc. are the development trends of LCD TVs.
  • the liquid crystal display device includes: a back plate, a middle frame and a diffusion plate.
  • the backplane includes a bottom and a side wall perpendicular to the bottom.
  • the middle frame includes a first bearing portion and a second bearing portion and a middle frame connection portion that are oppositely arranged.
  • the middle frame connecting portion connects the first bearing portion and the second bearing portion.
  • the first bearing portion is parallel to the bottom.
  • the first bearing part, the second bearing part and the middle frame connecting part form a groove-like structure.
  • a part of the diffusion plate is located in the groove-like structure.
  • FIG. 1 is a schematic diagram of an exploded structure of a liquid crystal display device according to an embodiment of the application.
  • FIG. 2 is a schematic structural diagram of the backplane shown in FIG. 1;
  • FIG. 3 is a schematic diagram of the cross-sectional structure of the back plate in FIG. 2 at E-E′;
  • FIG. 4 is a schematic perspective view of the third middle frame shown in FIG. 1;
  • FIG. 5 is an enlarged view of the circled part of FIG. 4;
  • FIG. 6 is a simplified plan view of a liquid crystal display device according to an embodiment of the present application.
  • FIG. 7 is a schematic cross-sectional structural view of the liquid crystal display device in FIG. 6 at A-A';
  • FIG. 8 is a schematic cross-sectional perspective view of the liquid crystal display device in FIG. 6 at A-A';
  • FIG. 9 is a schematic cross-sectional structural view of the liquid crystal display device in FIG. 6 at B-B';
  • FIG. 10 is a schematic cross-sectional structural view of the liquid crystal display device in FIG. 6 at C-C';
  • FIG. 11 is a schematic cross-sectional structural view of the liquid crystal display device in FIG. 6 at D-D';
  • FIG. 12 is a schematic cross-sectional structure diagram of the liquid crystal display device in FIG. 6 at D-D′.
  • first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or parts, these elements, components, regions, layers and/or parts should not be limited by these terms . These terms can only be used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Unless the context clearly indicates otherwise, terms such as “first”, “second”, and other numbers used herein do not imply a sequence or order. Therefore, without departing from the teachings of the exemplary embodiments, the first element, first component, first region, first layer or first section discussed below may be referred to as the second element, second component, second Area, second layer or second part.
  • spatially relative terms may be used herein, such as “inner”, “outer”, “below”, “below”, “lower”, “above”, “upper”, etc. It is used to describe the relationship between one element or feature shown in the figure and another element or feature.
  • spatial relative terms may also be intended to cover different orientations of the device in use or operation. For example, if the device in the figures is turned over, elements described as “below” or “beneath” other elements or features would then be redirected “above” the other elements or features.
  • the exemplary term “below” can include both relative orientations of up and down.
  • the device can be oriented in other ways (rotated 90 degrees or other directions), thereby explaining the spatial relative descriptors used herein.
  • FIG. 1 is an exploded perspective view of a liquid crystal display device according to an embodiment of the present application.
  • the liquid crystal display device 1000 includes a backlight module 100 and a liquid crystal panel 200.
  • the liquid crystal display device 1000 has a rectangular shape having a short side and a long side, the direction of the short side is called a first direction D1, and the direction of the long side is called a second direction D2.
  • the second direction D2 is substantially perpendicular to the first direction D1.
  • the backlight module 100 and the liquid crystal panel 200 are sequentially stacked along a third vertical direction D3 that is substantially orthogonal to the planes of the first direction D1 and the second direction D2.
  • the backlight module 100 includes a back plate 110, a light source 120, a reflection sheet 130, a diffusion plate 140, an optical film 150, a middle frame assembly 160, and a diffusion plate for supporting Bracket S.
  • FIG. 2 is a schematic structural view of the backplane 110 shown in FIG. 1, and FIG. 3 is a schematic cross-sectional view of the backplane 110 of FIG. 2 at E-E′.
  • the back plate 110 includes a bottom 111 and a first side wall 112, a second side wall 113, and a third side wall 114 that are substantially perpendicular to the third direction D3 of the liquid crystal display device 1000.
  • the first side wall 112 and the second side wall 113 are substantially parallel to the first direction D1
  • the third side wall 114 is substantially parallel to the second direction D2
  • the bottom 111 is parallel to the plane where the liquid crystal panel 200 is located.
  • the third side wall 114 includes a first sub side wall 1141 and a second sub side wall 1142 provided in the third direction D3 of the liquid crystal display device 1000.
  • the second sub-side wall 1142 is located inside the back plate 110.
  • the first sub-side wall 1141 is closer to the bottom 111 of the back plate 110 than the second sub-side wall 1142.
  • the first sub-side wall 1141 and the second sub-side wall 1142 are connected by a side wall connecting portion 1143.
  • the first sub-side wall 1141, the second sub-side wall 1142, and the side wall connecting portion 1143 are integrally connected.
  • the second sub-side wall 1142 is formed by integral bending, so that the strength of the back plate 110 is enhanced by the processing process of the bending process.
  • the back plate 110 further includes a back plate connection portion 115 between the bottom 111 and the side wall.
  • the back plate connection portion 115 includes a slope portion 1151 connected to the edge of the bottom 111
  • the platform portion 1152 connected to one end of the first side wall 112 or the second side wall 113 or the third side wall 114 and the transition portion 1153 connecting the inclined surface portion 1151 and the platform portion 1152.
  • the first angle ⁇ of the inclined portion 1151 relative to the bottom 111 is in the range of about 20 degrees to about 50 degrees, for example, 25 degrees, 30 degrees, 35 degrees, 40 degrees, and so on.
  • the curve-optimized design makes the display device thinner and lighter in appearance, and achieves a good appearance effect.
  • the plane where the platform portion 1152 is located is substantially perpendicular to the third direction D3 and parallel to the plane where the liquid crystal panel 200 is located, and the plane where the transition portion 1153 is located is substantially parallel to the third direction D3, the three-stage design of the inclined portion, the transition portion and the platform portion is reduced It is difficult to process the backplane in the actual production process.
  • the first side wall 112 and the second side wall 113 in the back plate 110 include substantially the same structure as the third side wall 114.
  • the bottom 111, the first side wall 112, the second side wall 113, the third side wall 114, and the back plate connecting portion 115 of the back plate 110 have an integrated structure, that is, the back plate 110 has an integrated structure.
  • the back plate 110 In terms of processing technology, it can be processed in an integrated bending manner. One is to increase the strength of the back plate 110, and the other is to have a good appearance effect.
  • the back plate 110 includes three integrally formed side walls, for the purpose of assembly, the fourth side wall other than the three side walls is not provided with the above structure, which facilitates the assembly of the diffusion plate and the optical film.
  • the light source 120 is used to generate light, which includes a plurality of LED light bars 121 arranged along the second direction D2.
  • the plurality of LED light bars 121 are arranged substantially in parallel.
  • the light bar 121 includes a circuit board 1211 and a plurality of LED lights 1212 located on one side of the circuit board 121.
  • the other side of the circuit board 1211 is in contact with the back board 110, and the light bar 121 is fixed to the back board 110 through a connecting member.
  • the reflective sheet 130 is used to reflect light into the light exit direction.
  • the reflective sheet 130 is fixed to the surface of the back plate 110, and the reflective sheet 130 is provided with a plurality of through holes that expose the LED lamp 1212.
  • the diffusion plate 140 refracts and reflects the light from the light source 120, thereby achieving uniform light.
  • the optical diaphragm 150 generally includes one or more diaphragms, which are mainly used for condensing light and improving brightness.
  • the diffusion plate holder S is located on the back plate 110 and serves to support the diffusion plate 140, thereby ensuring the light mixing distance of the liquid crystal display device 1000.
  • the middle frame assembly 160 is located at the edge of the reflective sheet 130, the diffusion plate 140, and the optical film 150.
  • the middle frame assembly 160 and the inclined surface portion 1151 cooperate to support the reflective sheet 130.
  • the middle frame assembly 160 includes a first middle frame 161 and a second middle frame 162 substantially parallel to the first direction D1, and a third middle frame 163 and a fourth middle frame 164 substantially parallel to the second direction D2.
  • the fourth middle frame 164 and the front case 170 are cooperatively connected.
  • the middle frames in the middle frame assembly 160 are assembled by splicing.
  • the first, second, and third middle frames can also be integrally formed.
  • a middle frame tape 180 is provided between the first middle frame 161, the second middle frame 162, the third middle frame 163, and the back plate 110, so that the middle frame assembly 160 is fixed to the back plate 110 through the middle frame tape 180.
  • a panel tape 190 is provided between the middle frame assembly 170 and the liquid crystal panel 200, and the liquid crystal panel 200 is fixed to the middle frame assembly 160 by the panel tape 190.
  • the display device 1000 may further include a rear case (not shown), which is combined with the side of the back plate 110 away from the liquid crystal panel 200.
  • FIG. 4 is a schematic perspective view of the third middle frame 163 shown in FIG. 1, and FIG. 5 is an enlarged view of the circled part in FIG. 4.
  • the third middle frame 163 integrally forms a groove-like structure.
  • the third middle frame 163 includes a first carrying portion 1631, a second carrying portion 1632 and a middle frame connecting portion 1633.
  • the first bearing portion 1631 and the second bearing portion 1632 are disposed oppositely and perpendicular to the third direction D3.
  • the middle frame connecting portion 1633 is used to connect the first carrying portion 1631 and the second carrying portion 1632 and is located between the first carrying portion 1631 and the second carrying portion 1632.
  • the first carrying portion 1631, the second carrying portion 1632 and the middle frame connecting portion 1633 form a groove-like structure.
  • the first carrying portion 1631 includes a panel carrying portion 16311 and a diaphragm carrying portion 16312. According to the lamination relationship of the liquid crystal display device 1000, the panel carrying portion 16311 and the diaphragm carrying portion 16312 have a certain height difference, and form a step shape.
  • the diaphragm carrying portion 16312 is close to the end of the first carrying portion 1631.
  • the film carrying portion 16312 is further provided with protrusions 16313, and the mounting ears of the optical film are hooked to the protrusions 16313 to achieve fixing of the optical film.
  • the third middle frame 163 further includes a reflective sheet carrier 1634 extending along one end of the second carrier 1632 at a second angle ⁇ relative to the second carrier 1632.
  • the second angle ⁇ is set within a range of approximately 20 degrees to 50 degrees, for example, 25 degrees, 30 degrees, 35 degrees, 40 degrees, and so on.
  • the reflecting sheet carrying portion 1634 is used to carry the reflecting sheet 130 (shown in FIG. 1 ).
  • the reflecting sheet 130 may be fixed to the reflecting sheet carrying portion 1634 by bonding or the like.
  • the reflective sheet bearing portion 1634 is used to support and fix the reflective sheet 130.
  • the third middle frame 163 further includes a support portion 1635 connected to one end of the reflective sheet carrying portion 1634.
  • the support portion 1635 extends in a direction away from the first bearing portion 1631.
  • the plane where the support portion 1635 is located is substantially parallel to the third direction D3, and the support portion 1635 is in contact with the back plate 110 (shown in FIG. 1) to play a supporting role to prevent the third middle frame from turning over.
  • the first middle frame 161 and the second middle frame 162 have substantially the same structure as the third middle frame 163.
  • the difference from the third middle frame 163 is that the first middle frame 161 and the second middle frame 162 do not include the diaphragm bearing portion 16312
  • the specific structure please refer to the corresponding description in Figure 9-10.
  • FIG. 6 is a schematic plan view of the liquid crystal display device 1000.
  • 7 and 8 are schematic cross-sectional views of the liquid crystal display device 1000 at A-A', where A-A' corresponds to the position of the ear of the optical film.
  • the liquid crystal display device 1000 includes a back plate 110, a reflection sheet 130, a diffusion plate 140, an optical film 150, a third middle frame 163 and a liquid crystal panel 200.
  • the third middle frame 163 is located on the side of the third side wall 114 of the back plate 110 near the bottom 111.
  • the third middle frame 163 includes a first bearing portion 1631 and a second bearing portion 1632 disposed oppositely, and a middle frame connecting portion 1633 connected between the first bearing portion 1631 and the second bearing portion 1632.
  • the first carrying portion 1631, the second carrying portion 1632 and the middle frame connecting portion 1633 form a groove-like structure.
  • the diffusion plate 140 is located in the groove-like structure, and the first bearing portion 1631 carries the liquid crystal panel 200.
  • the middle frame is disposed on the side of the side wall of the back plate near the bottom, the liquid crystal panel is placed on the first bearing portion of the third middle frame, and a part of the diffusion plate is placed on the first bearing portion and the second bearing portion and the middle frame connecting portion are formed In the groove-like structure of this, in this way, it is possible to ensure that the internal components in the liquid crystal display device are not exposed without providing a frame on the side, and the diffusion plate and the liquid crystal panel are also fixed, thereby realizing the frameless design of the liquid crystal display device.
  • the third side wall 114 includes a first sub-side wall 1141, a side wall connecting portion 1143, and a second sub-side wall 1142 that are integrally connected, and the three are formed by integral bending.
  • the third middle frame 163 is located on the side of the second sub-side wall 1142 away from the first sub-side wall 1141. After being assembled in this way, compared to the case where the third side wall 114 includes only the first sub-side wall 1141, the exposed side is the side wall connecting portion 1143 instead of the end of the first sub-side wall 1141.
  • the side wall connecting portion 1143 is a smooth transition curved surface and has a good appearance.
  • the first sub-side wall 1141 and the side wall connecting portion 1143 may be sprayed directly on the first sub-side wall 1141 as the appearance surface.
  • the third middle frame 163 is located between the back plate 110 and the liquid crystal panel 200, and a middle frame tape 180 is provided between the platform portion 1152 of the back plate 110 and the second bearing portion 1632 of the third middle frame for placing the third middle frame 163 ⁇ 110 ⁇ 163 fixed to the back plate 110.
  • the reflective sheet 130 is located on the reflective sheet bearing portion 1634 of the third middle frame 163, and the edge of the reflective sheet 130 is located on the second bearing portion 1632. Since the reflective sheet bearing portion 1634 forms a second angle ⁇ with respect to the second bearing portion 1632, accordingly, the reflective sheet 130 also forms a second angle ⁇ with the second bearing portion 1632, that is, the reflective sheet 130 forms a second angle with respect to the bottom 111
  • the angle range of ⁇ and ⁇ is 20 degrees to 50 degrees, preferably 30 degrees. Compared with the direct placement of the reflective sheet 130 on the back plate 110, more light from the light source is reflected back to the display area of the display device, which is beneficial to improve The display brightness of the display device.
  • the third middle frame 163 further includes a support portion 1635 connected to one end of the reflective sheet carrying portion 1634.
  • the support portion 1635 is in contact with the inclined surface portion 1151 of the back plate 110 to play a supporting role for preventing the third middle frame from being turned inward.
  • the diffusion plate 140 is located on the side of the second bearing portion 1632 close to the liquid crystal panel 200, that is, the diffusion plate 140 is inserted into the groove structure formed by the first bearing portion 1631, the second bearing portion 1632, and the middle frame connecting portion 1633.
  • the first bearing portion 1631 of the third middle frame 163 is located between the diffusion plate 140 and the liquid crystal panel 200.
  • the optical film 150 is placed on the film bearing portion 16312, and the film hanging ears on the optical film 150 are attached to the protrusions 16313.
  • the film fixing ears and the protrusions 16313 are also provided with a film fixing tape 151 for optical
  • the diaphragm 150 is fixed to the diaphragm carrying portion 16312.
  • a panel tape 190 is provided between the liquid crystal panel 200 and the panel carrying portion 16311, thereby realizing the fixing of the liquid crystal panel 200 to the third middle frame 163.
  • FIG. 9 is a schematic cross-sectional view of the liquid crystal display device 1000 at B-B′, where B-B′ corresponds to the position of the ear without a diaphragm.
  • the difference from the film lugs in FIG. 7 is that no protrusions are provided on the film carrying portion 16312, and the remaining structure is the same as the structure shown in FIG. 7, which will not be repeated here.
  • FIGS. 7 and 9 are schematic cross-sectional views of the liquid crystal display device 1000 at C-C'.
  • the difference from the structure shown in FIGS. 7 and 9 is that the first bearing portion of the first (or second) middle frame does not include the membrane bearing portion, but only includes the panel bearing portion, between the optical film 150 and the middle frame Without a matching structure, the middle frame only serves to limit the position of the diaphragm.
  • 11 and 12 are schematic cross-sectional views of the liquid crystal display device 1000 at D-D'.
  • the liquid crystal display device 1000 includes a back plate 110, a reflection sheet 130, a diffusion plate 140, an optical film 150, a fourth middle frame 164, a liquid crystal panel 200 and a front case 170.
  • the fourth middle frame 164 is located at the edge of the reflective sheet 130, the diffusion plate 140 and the optical film 150.
  • the back plate 110 includes a back plate carrying portion 116 for carrying the reflective sheet 130, the diffusion plate 140 and the optical film 150.
  • the reflection sheet 130, the diffusion plate 140, and the optical film 150 are stacked in this order.
  • the backplane bearing portion 116 further includes a jack 117.
  • the back plate 110 further includes a lower side wall 118 extending away from the liquid crystal panel 200 in the third direction D3.
  • the fourth middle frame 164 includes a middle frame pressing portion 1641 parallel to the liquid crystal panel 200.
  • the middle frame pressing portion 1641 includes a first side and a second side opposite to the first side, the first side is in contact with the side of the optical film 150 away from the back plate 110, and the panel side tape 190 is provided on the second side The panel tape 190 is used to bond the liquid crystal panel 200.
  • the fourth middle frame 164 further includes a front shell support wall 1642 and a plug arm 1643.
  • the front shell support wall 1642 and the plug arm 1643 are perpendicular to the middle frame pressing portion 1641.
  • the insertion wall 1643 is close to the end of the middle frame pressing portion 1641, and the insertion arm 1643 is inserted into the insertion hole 117 of the back plate 110.
  • a slot is formed between the insertion arm 1643 and the front case support wall 1642, and the lower side wall 118 is located in the slot formed by the insertion arm 1643 and the front case support wall 1642.
  • the front case 170 is pressed against the edge of the liquid crystal panel 200, surrounding the end of the front case support wall 1642 away from the back plate 110 and the side away from the middle frame pressing portion 1641 to prevent light leakage and beautify the appearance.

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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)

Abstract

一种液晶显示装置（1000），包括背板（110）、中框（161, 162, 163）和扩散板（140）。背板（110）包括底部（111）和垂直于底部（111）的侧壁。中框（161, 162, 163）包括相对设置的第一承载部（1631）和第二承载部（1632）以及中框连接部（1633）。中框连接部（1633）连接第一承载部（1631）和第二承载部（1632）。第一承载部（1631）平行于底部（111）。第一承载部（1631）、第二承载部（1632）和中框连接部（1633）形成一槽状结构。扩散板（140）的一部分位于槽状结构内。

Description

一种液晶显示装置
相关申请的交叉引用
本专利申请要求于2019年1月2日提交的、申请号为2019100015283、发明名称为“一种液晶显示装置”，以及于2019年1月31日提交的、申请号为2019101004267、发明名称为“一种液晶显示装置”的中国专利申请的优先权，这些申请的全文以引用的方式并入本文中。
技术领域
本申请涉及显示技术领域，尤其涉及一种液晶显示装置。
背景技术
液晶电视一般包括背光模组和液晶面板，根据背光模组中入光方式的不同，背光模组可分为直下式背光模组和侧入式背光模组。直下式背光模组在实现画质效果方面具有其优势，具有直下式背光模组的液晶电视在市场上占据重要的地位。目前，超薄、超窄、无边框等等都是液晶电视的发展趋势。
发明内容
本申请实施例提供的液晶显示装置，包括：背板、中框和扩散板。背板包括底部和垂直于所述底部的侧壁。中框包括相对设置的第一承载部和第二承载部以及中框连接部。中框连接部连接第一承载部和第二承载部。第一承载部平行于底部。第一承载部、第二承载部和中框连接部形成一槽状结构。所述扩散板的一部分位于所述槽状结构内。
附图说明
为了更清楚地说明本申请实施例或相关技术中的技术方案，下面将对实施例或相关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获得其他的附图。
图1为根据本申请实施例的液晶显示装置的分解结构示意图；
图2为图1中示出的背板的结构示意图；
图3为图2中背板在E-E′处的剖面结构示意图；
图4为图1中示出的第三中框的立体结构示意图；
图5为图4的圆圈部分的放大图；
图6为根据本申请实施例的液晶显示装置的简易俯视图；
图7为图6中液晶显示装置在A-A′处的剖面结构示意图；
图8为图6中液晶显示装置在A-A′处的剖面立体结构示意图；
图9为图6中液晶显示装置在B-B′处的剖面结构示意图；
图10为图6中液晶显示装置在C-C′处的剖面结构示意图；
图11为图6中液晶显示装置在D-D′处的剖面结构示意图；
图12为图6中液晶显示装置在D-D′处的剖面立体结构示意图。
具体实施方式
提供示例性实施例以使本申请是透彻的且将本申请的范围完全传达给本领域技术人员。为了透彻理解本申请实施例，阐述了许多具体细节，例如具体组件，具体设备和具体方法的示例。对本领域技术人员显而易见的是，不需要采用具体细节，示例性实施例可以以许多不同的形式来体现，并且都不应被解释为限制本申请的范围。在一些示例性实施例中，公知过程、公知的设备结构和公知技术并未详细描述。
在本申请使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本申请。在本文中所使用的单数形式的“一种”、“所述”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。术语“包括”、“包含”和“具有”或者其任何其他变体，意在涵盖非排他性的包含。例如包含了一系列步骤或单元的过程、方法、系统、产品或设备没有限定于已列出的步骤或单元，而是可选地还包括没有列出的步骤或单元，或可选地包括对于这些过程、方法、产品或设备固有的其他步骤或单元。除非明确标识为执行顺序，否则本文描述的方法步骤、过程和操作不应被解释为必须以所讨论或图示的特定顺序执行。还应理解可以采用附加步骤或替代步骤。
尽管本文可以使用术语第一，第二，第三等来描述各种元件、组件、区域、层和/或部分，但是这些元件、组件、区域、层和/或部分不应受这些术语的限制。这些术语仅 可用于区分一元件、组件、区域、层或部分与另一元件、组件、区域、层或部分。除非上下文明确指出，否则本文中使用的诸如“第一”、“第二”和其他数字之类的术语并不暗示顺序或次序。因此，在不脱离示例性实施例的教导的情况下，下面讨论的第一元件，第一组件，第一区域，第一层或第一部分可以被称为第二元件，第二组件，第二区域，第二层或第二部分。
为了方便起见，在本文中可以使用空间相对术语，例如“内部”、“外部”、“之下”、“下方”、“下部”、“上方”、“上部”等。用于描述图中所示的一个元件或特征与另一个或多个元件或特征的关系。空间相对术语除了附图中描绘的方位之外，还可以意图涵盖使用或操作中的设备的不同方位。例如，如果附图中的装置被翻转，则被描述为在其他元件或特征“之下”或“下方”的元件将被重新定向在其他元件或特征“之上”。因此，示例性术语“在...下”可以包括上和下两个相对方位。可以其他方式(旋转90度或其他方向)为设备定向，由此解释本文所用的空间相对描述语。
下面结合说明书附图对本申请实施例进行详细描述。
图1是根据本申请实施例的液晶显示装置的分解透视图。
参照图1，液晶显示装置1000包括背光模组100和液晶面板200。
液晶显示装置1000为具有短边和长边的矩形形状，短边的方向被称作第一方向D1，长边的方向被称作第二方向D2。第二方向D2基本上与第一方向D1垂直。背光模组100和液晶面板200沿着基本上与第一方向D1和第二方向D2的平面正交的第三竖直方向D3顺序地堆叠。
沿着液晶显示装置1000中光线的出光方向，背光模组100包括起到支撑作用的背板110、光源120、反射片130、扩散板140、光学膜片150，中框组件160，以及扩散板支架S。
图2是图1中示出的背板110的结构示意图，图3是图2的背板110在E-E′处的剖面示意图。
参照图2和图3，背板110包括底部111和与液晶显示装置1000的第三方向D3大致垂直的第一侧壁112、第二侧壁113和第三侧壁114。第一侧壁112和第二侧壁113大致平行于第一方向D1，第三侧壁114大致平行于第二方向D2，底部111平行于液晶面板200所在的平面。
以第三侧壁114为例，第三侧壁114包括在液晶显示装置1000的第三方向D3上设 置的第一子侧壁1141和第二子侧壁1142。在一些实施例中，第二子侧壁1142位于背板110的内侧。在另一些实施例中，第一子侧壁1141比第二子侧壁1142更靠近背板110的底部111。第一子侧壁1141和第二子侧壁1142之间通过侧壁连接部1143相连。第一子侧壁1141、第二子侧壁1142和侧壁连接部1143一体连接。第二子侧壁1142通过一体折弯的方式形成，如此，通过折弯工艺的加工过程增强了背板110的强度。
同时，为了保证一定的混光距离和外观效果，背板110还包括在底部111和侧壁之间的背板连接部115，背板连接部115包括与底部111的边缘连接的斜面部1151、与第一侧壁112或第二侧壁113或第三侧壁114的一端连接的平台部1152以及连接斜面部1151和平台部1152的过渡部1153。斜面部1151相对于底部111倾斜的第一角度θ在大约20度至大约50度的范围内，例如25度、30度、35度、40度等。曲线优化的设计使得显示装置外观上更加轻薄，实现了良好的外观效果。平台部1152所在的平面大致垂直于第三方向D3，平行于液晶面板200所在的平面，过渡部1153所在平面大致平行于第三方向D3，斜面部、过渡部和平台部的三段设计减小了背板在实际生产过程中的加工工艺难度。
背板110中第一侧壁112和第二侧壁113包括与第三侧壁114大致相同的结构。
背板110中底部111、第一侧壁112、第二侧壁113、第三侧壁114以及背板连接部115为一体结构，即背板110为一体成型结构。在加工工艺上，可采用一体折弯的方式进行加工，一是可增强背板110的强度，二是具有良好的外观效果。
此外，因背板110包括一体成型的三个侧壁，为了装配的需要，除三个侧壁之外的第四侧壁未设置如上的结构，便于扩散板以及光学膜片的组装。
在图1中，光源120用于产生光，其包括沿第二方向D2设置的多个LED灯条121。多个LED灯条121之间大致平行设置。灯条121包括电路板1211和位于电路板121一侧的多个LED灯1212，电路板1211的另一侧与背板110接触，灯条121通过连接部件固定于背板110上。
反射片130用于将光线反射到出光方向上。反射片130固定于背板110的表面，反射片130上设置有多个使LED灯1212外露的通孔。
扩散板140将来自光源120的光线进行折射和反射，进而实现对光线的均匀化。
光学膜片150通常包括一个或多个膜片，主要用于聚光和提高亮度。
扩散板支架S位于背板110上且用于支撑扩散板140，由此保证液晶显示装置1000 的混光距离。
中框组件160位于反射片130、扩散板140和光学膜片150边缘。中框组件160和斜面部1151配合以支撑反射片130。中框组件160包括基本上平行于第一方向D1的第一中框161和第二中框162，基本上平行于第二方向D2的第三中框163和第四中框164。第四中框164和前壳170配合连接。
中框组件160中各个中框之间通过拼接形式组装。可选地，第一、二、三中框也可以一体成型。第一中框161、第二中框162、第三中框163和背板110之间设置有中框胶带180，这样，中框组件160通过中框胶带180固定于背板110上。中框组件170和液晶面板200之间设置有面板胶带190，液晶面板200通过面板胶带190固定到中框组件160。
显示装置1000还可包括后壳(未示出)，该后壳与背板110的远离液晶面板200的一侧结合。
图4是图1中示出的第三中框163的立体结构示意图，图5是图4中圆圈部分的放大图。
参照图4、图5，第三中框163整体形成一槽状结构，第三中框163包括第一承载部1631、第二承载部1632和中框连接部1633。第一承载部1631和第二承载部1632相对设置且垂直于第三方向D3。中框连接部1633用于连接第一承载部1631和第二承载部1632且位于第一承载部1631和第二承载部1632之间。第一承载部1631、第二承载部1632和中框连接部1633三者围成一槽状结构。
第一承载部1631包括面板承载部16311和膜片承载部16312。根据液晶显示装置1000的层叠关系，面板承载部16311和膜片承载部16312具有一定的高度差，构成台阶形状。膜片承载部16312靠近第一承载部1631的末端。膜片承载部16312上还设置有突起16313，光学膜片的挂耳挂接到突起16313上，实现对光学膜片的固定。
在一些实施例中，第三中框163还包括沿第二承载部1632的一端延伸，相对于第二承载部1632成第二角度α的反射片承载部1634。第二角度α设置成大约20度至50度的范围内，例如25度、30度、35度、40度等。反射片承载部1634用于承载反射片130(图1示出)，反射片130可通过粘结等方式固定于反射片承载部1634。反射片承载部1634用于实现对反射片130的支撑和固定。
在另一些实施例中，第三中框163还包括与反射片承载部1634的一端连接的支撑部 1635。支撑部1635朝着远离第一承载部1631的方向延伸。支撑部1635所在平面大致平行于第三方向D3，支撑部1635与背板110(图1示出)接触，起到支撑作用，以防止第三中框内翻。
第一中框161和第二中框162与第三中框163的结构大致相同，与第三中框163不同的是，第一中框161和第二中框162不包括膜片承载部16312，具体结构可参考图9-10对应的说明。
以下对液晶显示装置1000中各部件装配后的相对位置关系进行说明。
图6是液晶显示装置1000的简略俯视图。图7、图8是液晶显示装置1000在A-A′处的剖面示意图，A-A′处正好对应于光学膜片的挂耳的位置。
在图7、8中，液晶显示装置1000包括背板110，反射片130，扩散板140，光学膜片150、第三中框163和液晶面板200。
第三中框163位于背板110的第三侧壁114靠近底部111的一侧。第三中框163包括相对设置的第一承载部1631和第二承载部1632以及连接于第一承载部1631和第二承载部1632之间的中框连接部1633。第一承载部1631、第二承载部1632和中框连接部1633三者围成一槽状结构。扩散板140位于所述槽状结构内，第一承载部1631承载液晶面板200。中框设置于背板的侧壁靠近底部的一侧，液晶面板放置于第三中框的第一承载部，扩散板的一部分放置于第一承载部和第二承载部与中框连接部形成的槽状结构内，如此，在该侧无需设置边框即可保证液晶显示装置中的内部部件不外露，且还固定了扩散板和液晶面板，实现了液晶显示装置的无边框设计。
第三侧壁114包括一体连接的第一子侧壁1141、侧壁连接部1143和第二子侧壁1142，三者通过一体折弯方式形成。第三中框163位于第二子侧壁1142远离第一子侧壁1141的一侧。如此组装后，相比于第三侧壁114只包括第一子侧壁1141的情形，裸露在外的为侧壁连接部1143，而非第一子侧壁1141的端部。侧壁连接部1143为平滑过渡的曲面，具有良好的外观形态。可通过直接在第一子侧壁1141和侧壁连接部1143上喷涂将这两者作为外观面。
第三中框163位于背板110和液晶面板200之间，背板110的平台部1152与第三中框的第二承载部1632之间设置有中框胶带180，用于将第三中框163固定到背板110。
反射片130位于第三中框163的反射片承载部1634上，反射片130的边缘位于第二承载部1632。因反射片承载部1634相对于第二承载部1632成第二角度α，相应地，反 射片130也与第二承载部1632成第二角度α，即反射片130相对于底部111成第二角度α，α的角度范围为20度到50度，优选30度.相比于将反射片130直接贴设于背板110上，有更多的光源光线被反射回显示装置的显示区域，利于提高显示装置的显示亮度。
第三中框163还包括连接于反射片承载部1634一端的支撑部1635。支撑部1635与背板110的斜面部1151相接触，起到支撑作用，用于防止第三中框内翻。
扩散板140位于第二承载部1632靠近液晶面板200的一侧，即扩散板140插设于第一承载部1631、第二承载部1632和中框连接部1633形成的槽状结构中。
第三中框163的第一承载部1631位于扩散板140和液晶面板200之间。光学膜片150放置于膜片承载部16312，光学膜片150上的膜片挂耳挂接于突起16313上，膜片挂耳和突起16313上还设置有膜片固定胶带151，用于将光学膜片150固定于膜片承载部16312。液晶面板200与面板承载部16311之间设置有面板胶带190，由此实现将液晶面板200固定到第三中框163。
图9是液晶显示装置1000在B-B′处的剖面示意图，B-B′处正好对应于无膜片挂耳的位置。与图7中有膜片挂耳不同的是，膜片承载部16312上没有设置突起，其余结构与图7中所示结构相同，在此不再赘述。
图10是液晶显示装置1000在C-C′处的剖面示意图。与图7、9中所示结构不同的是，第一(或第二)中框的第一承载部不包括膜片承载部，仅包括面板承载部，光学膜片150与该中框之间无配合结构，该中框只是起到限制膜片位置的作用。
图11、图12是液晶显示装置1000在D-D′处的剖面示意图。
在图11、图12中，液晶显示装置1000包括背板110、反射片130、扩散板140、光学膜片150、第四中框164，液晶面板200和前壳170。第四中框164位于反射片130、扩散板140和光学膜片150的边缘。
背板110包括背板承载部116，用于承载反射片130、扩散板140和光学膜片150。反射片130、扩散板140和光学膜片150依次层叠设置。背板承载部116上还包括插孔117。
背板110还包括在第三方向D3上远离液晶面板200而延伸形成的下侧壁118。
第四中框164包括平行于液晶面板200的中框压置部1641。中框压置部1641包括 第一侧面和与第一侧面相对的第二侧面，其第一侧面与光学膜片150远离背板110的一侧接触，其第二侧面上设置有面板胶带190，面板胶带190用于粘结液晶面板200。
第四中框164还包括前壳支撑壁1642和插臂1643，前壳支撑壁1642和插臂1643与中框压置部1641垂直。插壁1643靠近中框压置部1641的端部，插臂1643插入背板110的插孔117中。插臂1643和前壳支撑壁1642之间形成一插槽，下侧壁118位于插臂1643和前壳支撑壁1642形成的插槽中。
前壳170压设于液晶面板200的边缘，包围前壳支撑壁1642远离背板110的一端和远离中框压置部1641的一侧，以防止漏光，并美化外观。
出于说明和描述的目的，提供了前述实施例，而非旨在穷举或限制本申请。具体实施例的各个元件或特征通常不限于该具体实施例，而是在适用情况下即使未具体示出或描述也可在所选实施例中使用或互换。同样也可以许多形式变型，这种变型不被认为是脱离本申请，而且所有这样的修改被涵盖在本申请的范围内。

Claims (17)

  1. 一种液晶显示装置，包括：
    背板，包括：
    底部；和
    垂直于所述底部的侧壁；
    中框，包括：
    第一承载部，所述第一承载部平行于所述背板的底部；
    第二承载部，其和所述第一承载部相对设置；和
    中框连接部，连接所述第一承载部和所述第二承载部，其中，所述第一承载部、所述第二承载部和所述中框连接部形成一槽状结构；
    扩散板，所述扩散板的一部分位于所述槽状结构内。
  2. 根据权利要求1所述的液晶显示装置，其中，所述中框连接部位于所述背板的侧壁靠近所述背板的底部的一侧。
  3. 根据权利要求1所述的液晶显示装置，其中，所述液晶显示装置还包括液晶面板，所述第一承载部配置为承载所述液晶面板。
  4. 根据权利要求1所述的液晶显示装置，其中，所述背板还包括连接所述底部和所述侧壁的背板连接部。
  5. 根据权利要求4所述的液晶显示装置，其中，所述背板连接部包括：
    平台部，所述平台部连接所述侧壁且平行所述底部，所述平台部用于承载所述中框的第二承载部。
  6. 根据权利要求4所述的液晶显示装置，其中，所述背板连接部包括：
    斜面部，连接于所述底部、相对于所述底部成第一角度；和
    过渡部，连接所述斜面部和所述平台部。
  7. 根据权利要求6所述的液晶显示装置，其中，所述液晶显示装置还包括：反射片，所述中框和所述斜面部支撑所述反射片。
  8. 根据权利要求6所述的液晶显示装置，其中，所述第一角度的取值范围为20度至50度。
  9. 根据权利要求4所述的液晶显示装置，其中，所述底部、所述侧壁和所述背板连接部为一体结构。
  10. 根据权利要求1所述的液晶显示装置，其中，所述液晶显示装置还包括：
    中框胶带，所述中框胶带设置在所述中框和所述背板之间，配置为将所述中框固 定于所述背板上。
  11. 根据权利要求1所述的液晶显示装置，其中，所述侧壁包括：
    第一子侧壁；
    第二子侧壁；和
    连接所述第一子侧壁和所述第二子侧壁的侧壁连接部。
  12. 根据权利要求11所述的液晶显示装置，其中，所述第一子侧壁、所述第二子侧壁和所述侧壁连接部一体成型。
  13. 根据权利要求7所述的液晶显示装置，其中，所述中框还包括：
    反射片承载部，连接所述第二承载部、且相对于所述第二承载部成第二角度，所述反射片承载部配置为承载所述反射片。
  14. 根据权利要求13中所述的液晶显示装置，其中，所述第二角度的取值范围为20度至50度。
  15. 根据权利要求13所述的液晶显示装置，其中，所述中框还包括，连接所述反射片承载部的支撑部。
  16. 根据权利要求1所述的液晶显示装置，其中，所述第一承载部包括：
    面板承载部，配置为承载所述液晶面板；和
    膜片承载部，配置为承载光学膜片。
  17. 根据权利要求16所述的液晶显示装置，其中，
    所述面板承载部与所述膜片承载部的高度不同；
    所述膜片承载部包括突起，所述突起用于挂接所述光学膜片。
PCT/CN2019/129387 2019-01-02 2019-12-27 一种液晶显示装置 WO2020140847A1 (zh)

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CN104534351A (zh) * 2014-12-11 2015-04-22 青岛海信电器股份有限公司 一种背光模组及显示装置
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CN102932617A (zh) * 2012-11-21 2013-02-13 宁波市环球宇斯浦电器有限公司 窄边框液晶电视边框结构装置
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