WO2020253005A1 - 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
WO2020253005A1
WO2020253005A1 PCT/CN2019/112220 CN2019112220W WO2020253005A1 WO 2020253005 A1 WO2020253005 A1 WO 2020253005A1 CN 2019112220 W CN2019112220 W CN 2019112220W WO 2020253005 A1 WO2020253005 A1 WO 2020253005A1
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WO
WIPO (PCT)
Prior art keywords
layer
display panel
liquid crystal
optical film
crystal display
Prior art date
Application number
PCT/CN2019/112220
Other languages
English (en)
French (fr)
Inventor
周政
Original Assignee
武汉华星光电技术有限公司
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 武汉华星光电技术有限公司 filed Critical 武汉华星光电技术有限公司
Priority to US16/613,429 priority Critical patent/US10914973B2/en
Publication of WO2020253005A1 publication Critical patent/WO2020253005A1/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
    • 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
    • G02F1/13338—Input devices, e.g. touch panels
    • 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

Definitions

  • the present invention relates to the field of display technology, in particular to a liquid crystal display device.
  • a middle rubber frame structure is generally used on the side of the back frame to fix the back frame and the touch screen, which leads to the technical problem that the narrow frame cannot be met.
  • a liquid crystal display device comprising a display panel, a backlight module, and a connection part connecting the backlight module and the display panel;
  • the backlight module includes a back frame, and the back frame includes a back plate And the bending part connected with the back plate;
  • the connecting portion includes a first fixing portion located on an end surface of the bending portion, the first fixing portion is fixedly connected to the end surface of the bending portion and the display panel, and the bending portion
  • the orthographic projection of the end surface on the display panel includes the orthographic projection of the outer side of the first fixing portion on the display panel
  • the first fixing portion includes a first adhesive layer, a sealing layer, and a Two bonding layers, the sealing layer is connected to the end surface of the bending part through the first bonding layer, and the sealing layer is connected to the display panel through the second bonding layer
  • the connecting part It also includes a second fixing portion fixedly connected to the first fixing portion, and the second fixing portion is located inside the bending portion and connected to the inner side wall of the bending portion.
  • the bending portion is arranged around the peripheral side of the back plate, and a receiving cavity is formed between the bending portion and the back plate; the backlight module further includes an optical film located in the receiving cavity A gap is provided between the optical film and the inner side wall of the bending part.
  • a buffer layer is provided between the optical film and the display panel.
  • the buffer layer includes a laminated elastic member and a spacer, the elastic member is fixedly connected to one of the display panel and the optical film, and the display panel and the optical film are The spacer is arranged between the other one and the elastic member.
  • the connecting portion further includes a second fixing portion fixedly connected to the first fixing portion, the second fixing portion includes an adhesive fixing layer and a connecting layer; the connecting layer passes through the adhesive fixing layer It is connected with the inner side wall of the bending part, and the connection layer is connected with the sealing layer.
  • the bending portion is arranged around the peripheral side of the back plate, and a receiving cavity is formed between the bending portion and the back plate;
  • the backlight module further includes an optical film located in the receiving cavity A gap is provided between the optical film and the inner side wall of the bending part;
  • a buffer layer is provided between the optical film and the display panel, and the buffer layer includes a laminated elastic member and Spacer;
  • the elastic member is fixedly connected to one of the display panel and the optical film, and the other one of the display panel and the optical film and the elastic member is arranged between The spacer, the spacer, the connecting layer and the sealing layer are integrally formed, and the first adhesive layer and the adhesive fixing layer are integrally formed.
  • first adhesive layer, the second adhesive layer, and the adhesive fixing layer are all formed of a viscous material; the spacer, the connection layer, and the sealing layer are formed of an insulating sealing material .
  • a liquid crystal display device comprising a display panel, a backlight module, and a connection part connecting the backlight module and the display panel;
  • the backlight module includes a back frame, and the back frame includes a back plate And the bending part connected with the back plate;
  • the connecting portion includes a first fixing portion located on an end surface of the bending portion, the first fixing portion is fixedly connected to the end surface of the bending portion and the display panel, and the bending portion
  • the orthographic projection of the end surface on the display panel includes the orthographic projection of the outer side of the first fixing portion on the display panel.
  • the first fixing part includes a first adhesive layer, a sealing layer, and a second adhesive layer that are stacked, and the sealing layer is connected to the end surface of the bending part through the first adhesive layer, The sealing layer is connected to the display panel through the second adhesive layer.
  • the connecting portion further includes a second fixing portion fixedly connected to the first fixing portion, and the second fixing portion is located inside the bending portion and connected to the inner side wall of the bending portion.
  • the bending portion is arranged around the peripheral side of the back plate, and a receiving cavity is formed between the bending portion and the back plate; the backlight module further includes an optical film located in the receiving cavity A gap is provided between the optical film and the inner side wall of the bending part.
  • a buffer layer is provided between the optical film and the display panel.
  • the buffer layer includes a laminated elastic member and a spacer, the elastic member is fixedly connected to one of the display panel and the optical film, and the display panel and the optical film are The spacer is arranged between the other one and the elastic member.
  • the connecting portion further includes a second fixing portion fixedly connected to the first fixing portion, the second fixing portion includes an adhesive fixing layer and a connecting layer; the connecting layer passes through the adhesive fixing layer It is connected with the inner side wall of the bending part, and the connection layer is connected with the sealing layer.
  • the bending portion is arranged around the peripheral side of the back plate, and a receiving cavity is formed between the bending portion and the back plate;
  • the backlight module further includes an optical film located in the receiving cavity A gap is provided between the optical film and the inner side wall of the bending part;
  • a buffer layer is provided between the optical film and the display panel, and the buffer layer includes a laminated elastic member and Spacer;
  • the elastic member is fixedly connected to one of the display panel and the optical film, and the other one of the display panel and the optical film and the elastic member is arranged between The spacer, the spacer, the connecting layer and the sealing layer are integrally formed, and the first adhesive layer and the adhesive fixing layer are integrally formed.
  • first adhesive layer, the second adhesive layer, and the adhesive fixing layer are all formed of a viscous material; the spacer, the connection layer, and the sealing layer are formed of an insulating sealing material .
  • the display panel includes a touch screen body and a liquid crystal screen body located on the back side of the touch screen body, the liquid crystal screen body is located in the accommodating cavity and connected to the touch screen body, and the first fixing part is connected to The back of the touch screen body is connected.
  • the backlight module further includes a light source, a reflective sheet, and a light guide plate located in the accommodating cavity; the light source is fixedly arranged on the inner side wall of the bending part; the reflective sheet and the light guide plate All are parallel to the back plate, the reflective sheet is fixedly arranged on the back plate, and the light guide plate is located between the reflective sheet and the optical film.
  • the light source is located between the light guide plate and the bending part.
  • the backlight module further includes a light source and a diffusion plate located in the accommodating cavity; the light source is fixedly arranged on the back plate, and the diffusion plate is located between the optical film and the light source , The diffusion plate is parallel to the back plate.
  • the thickness of a member is reduced in the expansion direction of the optical film, thereby satisfying The narrow frame design requirements of the liquid crystal display device, and at the same time, enough space can be reserved between the optical film and the inner side wall of the bending part to prevent the optical film from being swollen and hindered to cause wrinkles and causing optical defects.
  • FIG. 1 is a schematic structural diagram of a liquid crystal display device in an embodiment of the present invention
  • Fig. 2 is a schematic diagram of the connection part in Fig. 1 after being flattened
  • Fig. 3 is a schematic top view of the connecting portion after being flattened in Fig. 2;
  • Fig. 4 is a schematic left view of the connecting part in Fig. 2 after being flattened
  • Fig. 5 is a schematic bottom view of the connection part after being flattened in Fig. 2;
  • FIG. 6 is a schematic structural diagram of a liquid crystal display device in another embodiment of the present invention.
  • the present invention is directed to the conventional liquid crystal display device, generally adopting a middle rubber frame structure on the side of the back frame to fix the back frame and the touch screen, which leads to the technical problem that the narrow frame requirement cannot be met.
  • the present invention can solve the above-mentioned problems.
  • the liquid crystal display device includes a display panel, a backlight module 20, and a connection part for connecting and fixing the backlight module 20 and the display panel.
  • the display panel includes a touch screen body 12 and a liquid crystal screen body 11 located on the back side of the touch screen body 12, and the liquid crystal screen body 11 is connected and fixed to the touch screen body 12 through an optical adhesive layer 13.
  • the backlight module 20 includes a back frame 21, the back frame 21 includes a back plate 211 and a bending portion 212 connected to the back plate 211, the back plate 211 is located on the back side of the display panel, The bending portion 212 is arranged around the circumference of the back plate 211 and faces the display panel, and a receiving cavity 50 is formed between the bending portion 212 and the back plate 211.
  • the connecting portion includes a first fixing portion 31 located at an end surface of the bending portion 212, the first fixing portion 31 is arranged around the circumference of the bending portion 212, and the first fixing portion 31
  • the end surface of the bending portion 212 is fixedly connected to the display panel, and the orthographic projection of the end surface of the bending portion 212 on the display panel includes the outer side of the first fixing portion 31 on the display panel Orthographic projection on.
  • the outer side of the first fixing portion 31 is a side of the first fixing portion 31 away from the inner side wall of the bending portion 212.
  • the thickness of the liquid crystal display device can meet the narrow frame design requirements of the liquid crystal display device.
  • the bent portion 212 and the back plate 211 are perpendicular to each other and are integrally formed, and the preparation materials of the bent portion 212 and the back plate 211 include but are not limited to sheet metal or aluminum alloy.
  • back plate 211 and the bent portion 212 may also be formed separately and then connected by welding or movable connection assembly, etc., to form the back frame 21.
  • the first fixing portion 31 includes a first adhesive layer 311, a sealing layer 312, and a second adhesive layer 313 that are stacked, and the sealing layer 312 passes through the first adhesive layer 311 and the curved The end surfaces of the folding portion 212 are connected, and the sealing layer 312 is connected to the display panel through the second adhesive layer 313.
  • the first adhesive layer 311 is attached to the end surface of the bending portion 212
  • the second adhesive layer 313 is attached to the display panel
  • the sealing layer 312 uses the first The adhesiveness of an adhesive layer 311 and a second adhesive layer 313 is bonded to the end surface of the bending portion 212 and the display panel.
  • the first adhesive layer 311 and the second adhesive layer 313 are both formed of adhesive materials such as double-sided tape or foam glue
  • the sealing layer 312 is formed of Mylar tape, poly-p-phenylene It is formed by insulating and sealing materials such as dicarboxylic acid plastics or polymethyl methacrylate, which are not listed here.
  • the connecting portion further includes a second fixing portion 32 fixedly connected to the first fixing portion 31, and the second fixing portion 32 is located inside the bending portion 212 and is connected to the bending portion 212.
  • the inner wall is fixedly connected.
  • the second fixing portion 32 is simultaneously fixedly connected with the inner side wall of the bending portion 212 and the first fixing portion 31 to enhance the connection strength between the display panel and the bending portion 212 and prevent the display panel from being separated from the back frame 21.
  • the second fixing portion 32 includes a bonding and fixing layer 321 and a connection layer 322 fixedly connected to the bonding and fixing layer 321; the bonding and fixing layer 321 and the connection layer 322 Parallel to the bending portion 212, the bonding and fixing layer 321 is attached to and fixed to the inner side wall of the bending portion 212, and the connecting layer 322 is connected and fixed to the sealing layer 312.
  • the backlight module 20 further includes an optical film 23 located in the accommodating cavity 50, the optical film 23 is parallel to the back plate 211 and is mounted on the back frame 21, the optical film 23 There is a gap with the inner side wall of the bent portion 212.
  • the second fixing portion 32 does not extend into the gap between the optical film 23 and the inner wall of the bending portion 212.
  • the purpose of leaving a gap between the optical film 23 and the inner side wall of the bending portion 212 is to allow the optical film 23 to have enough expansion space when it is in a high temperature state, and to prevent the optical film 23 from expanding due to Obstruction leads to wrinkles and causes optical defects, and this expansion space is determined by the material, size and external temperature conditions of the optical film 23.
  • the side wall of the optical film 23 and the bending can also be determined according to the actual situation. The size of the spacing between the inner side walls of the folded portion 212.
  • the distance between the side wall of the optical film 23 and the inner side wall of the bent portion 212 is 0.2-1.4 mm.
  • the liquid crystal screen body 11 is located in the accommodating cavity 50, and the first fixing portion 21 is fixedly connected to the back of the touch screen body 12.
  • a buffer layer 40 is provided between the optical film 23 and the liquid crystal screen body 11, and the buffer layer 40 is in contact with the optical film 23 and the liquid crystal screen body 11, thereby utilizing the buffer layer 40.
  • the cushioning performance relieves the influence of the deformation of the optical film 23 on the liquid crystal screen body 11.
  • one of the liquid crystal screen body 11 and the optical film 23 is fixedly connected to the buffer layer 40, and the other is connected to the buffer layer 40 infinitely, so as to prevent the optical film 23 from being completely Fixing on the liquid crystal panel 11 causes the optical film 23 to be unable to stretch at high temperatures.
  • the buffer layer 40 includes an elastic member 41 and a spacer 42 that are stacked, and the elastic member 41 is fixedly connected to one of the liquid crystal screen body 11 and the optical film 23, and the liquid crystal screen The spacer 42 is provided between the other of the body 11 and the optical film 23 and the elastic member 41.
  • FIG. 1 only shows the case where the elastic member 41 is fixedly connected to the liquid crystal screen body 11, and the spacer 42 is located between the elastic member 41 and the optical film 23.
  • the elastic member 41 can also be connected to The optical film 23 is fixedly connected, and the spacer 42 is located between the elastic member 41 and the liquid crystal screen body 11.
  • the elastic member 41 is double-sided foam, the side of the elastic member 41 connected to the spacer 42 has adhesiveness, and the elastic member 41 is far from the spacer 42. No stickiness on the side.
  • the elastic member 41 may also be formed of other materials, such as sponge, flexible rubber, or flexible plastic, which are not listed here.
  • Figure 2 is a schematic diagram of the connection part in Figure 1 after being flattened
  • Figure 3 is a plan view of the connection part after being flattened in Figure 2
  • Figure 4 is the left side of the connection part after being flattened in Figure 2 View
  • FIG. 5 is a bottom view of the connecting part after being flattened in FIG. 2.
  • the first bonding layer 311 and the bonding and fixing layer 321 are integrally formed; the spacer 42 and the sealing layer 312 and the connecting layer 322 is integrally formed.
  • first bonding layer 311 is formed with double-sided tape
  • bonding and fixing layer 321 is made of foam. Glue formation is not listed here.
  • the sealing layer 312, the connecting layer 322, and the spacer 42 may also be formed of different materials.
  • the sealing layer 312 is formed of Mylar tape
  • the connecting layer 322 is formed of a pair of It is formed of phthalic acid plastic
  • the spacer 42 is formed of polymethyl methacrylate, which will not be listed here.
  • the backlight module 20 further includes a light source 22, a reflective sheet 24, and a light guide plate 25 located in the containing cavity 50; the light source 22 is fixedly disposed on the inner side wall of the bending portion 212
  • the reflective sheet 24 and the light guide plate 25 are parallel to the back plate 211, the reflective sheet 24 is fixedly arranged on the back plate 211, the light guide plate 25 is located between the reflective sheet 24 and the Between the optical film 23.
  • the light source 22 is located between the light guide plate 25 and the bent portion 212, so as to prevent the light source 22 from obstructing the expansion of the optical film 23.
  • the backlight module 20 further includes a light source 22 and a diffuser plate 26 located in the receiving cavity 50; the light source 22 is fixedly arranged on the back plate 211, The diffusion plate 26 is located between the optical film 23 and the light source 22, and the diffusion plate 26 is parallel to the back plate 211.
  • the beneficial effects of the present invention are: replacing the middle plastic frame structure in the conventional design by the connecting part, and on the premise of ensuring the connection strength of the back frame 21 module and the display panel and the reliability of the vehicle, in the expansion direction of the optical film 23
  • the thickness of a member is reduced to meet the narrow frame design requirements of the liquid crystal display device.
  • enough space can be reserved between the optical film 23 and the inner side wall of the bending portion 212 to prevent the optical film 23 from being blocked due to expansion Wrinkles cause optical defects.

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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，包括显示面板、背光模组(20)以及连接部；背光模组(20)包括背框(21)，背框(21)包括背板(211)和与背板(211)固定连接的弯折部(212)；其中，连接部包括位于弯折部(212)的端面处的第一固定部(31)，第一固定部(31)与弯折部(212)的端面以及显示面板固定连接，弯折部(212)的端面在显示面板上的正投影包纳第一固定部(31)的外侧在显示面板上的正投影。

Description

一种液晶显示装置 技术领域
本发明涉及显示技术领域，尤其涉及一种液晶显示装置。
 背景技术
随着车载显示技术的发展，车载显示面板的要求也越来越高。高温条件下车载显示面板中的光学膜片会发生膨胀，而行业内对于车载显示面板的边框也要求越来越窄，如果没有在膜片膨胀方向上预留足够的空间，将会发生膜片因膨胀受阻导致膜片褶皱而引起光学不良。
因车载显示可靠性要求较高，光学膜片与背框之间需要预留出足够间隙来保证高温条件下光学膜片膨胀不会受阻，而针对中大尺寸车载显示面板，考虑到强度的问题，一般会选用较厚的铝钣金或者铸铝件形成框形的背框，又考虑到增加触摸功能，一般会在背框的外侧部采用中胶框结构将背框与触摸屏固定，从而导致无法满足窄边框需求。
 技术问题
现有的液晶显示装置中，一般会在背框侧部采用中胶框结构将背框与触摸屏固定，从而导致无法满足窄边框需求的技术问题。
 技术解决方案
一种液晶显示装置，所述液晶显示装置包括显示面板、背光模组以及连接所述背光模组与所述显示面板的连接部；所述背光模组包括背框，所述背框包括背板和与所述背板连接的弯折部；
其中，所述连接部包括位于所述弯折部的端面上的第一固定部，所述第一固定部与所述弯折部的端面以及所述显示面板固定连接，所述弯折部的端面在所述显示面板上的正投影包纳所述第一固定部的外侧在所述显示面板上的正投影；所述第一固定部包括层叠设置的第一粘结层、密封层以及第二粘结层，所述密封层通过所述第一粘结层与所述弯折部的端面连接，所述密封层通过所述第二粘结层与所述显示面板连接；所述连接部还包括与所述第一固定部固定连接的第二固定部，所述第二固定部位于所述弯折部的内侧且与所述弯折部的内侧壁连接。
进一步的，所述弯折部绕所述背板的周侧设置，所述弯折部与所述背板之间形成容纳腔；所述背光模组还包括位于所述容纳腔中的光学膜片，所述光学膜片与所述弯折部的内侧壁之间设有间隙。
进一步的，所述光学膜片与所述显示面板之间设置有缓冲层。
进一步的，所述缓冲层包括层叠设置的弹性件和隔垫，所述弹性件与所述显示面板和所述光学膜片中的一者固定连接，所述显示面板和所述光学膜片中的另一者与所述弹性件之间设置所述隔垫。
进一步的，所述连接部还包括与所述第一固定部固定连接的第二固定部，所述第二固定部包括粘结固定层以及连接层；所述连接层通过所述粘结固定层与所述弯折部的内侧壁连接，所述连接层与所述密封层连接。
进一步的，所述弯折部绕所述背板的周侧设置，所述弯折部与所述背板之间形成容纳腔；所述背光模组还包括位于所述容纳腔中的光学膜片，所述光学膜片与所述弯折部的内侧壁之间设有间隙；所述光学膜片与所述显示面板之间设置有缓冲层，所述缓冲层包括层叠设置的弹性件和隔垫；所述弹性件与所述显示面板和所述光学膜片中的一者固定连接，所述显示面板和所述光学膜片中的另一者与所述弹性件之间设置所述隔垫，所述隔垫、所述连接层以及所述密封层一体成型，所述第一粘结层与所述粘结固定层一体成型。
进一步的，所述第一粘结层、所述第二粘结层以及所述粘结固定层均由粘性材料形成；所述隔垫、所述连接层以及所述密封层由绝缘密封材料形成。
一种液晶显示装置，所述液晶显示装置包括显示面板、背光模组以及连接所述背光模组与所述显示面板的连接部；所述背光模组包括背框，所述背框包括背板和与所述背板连接的弯折部；
其中，所述连接部包括位于所述弯折部的端面上的第一固定部，所述第一固定部与所述弯折部的端面以及所述显示面板固定连接，所述弯折部的端面在所述显示面板上的正投影包纳所述第一固定部的外侧在所述显示面板上的正投影。
进一步的，所述第一固定部包括层叠设置的第一粘结层、密封层以及第二粘结层，所述密封层通过所述第一粘结层与所述弯折部的端面连接，所述密封层通过所述第二粘结层与所述显示面板连接。
进一步的，所述连接部还包括与所述第一固定部固定连接的第二固定部，所述第二固定部位于所述弯折部的内侧且与所述弯折部的内侧壁连接。
进一步的，所述弯折部绕所述背板的周侧设置，所述弯折部与所述背板之间形成容纳腔；所述背光模组还包括位于所述容纳腔中的光学膜片，所述光学膜片与所述弯折部的内侧壁之间设有间隙。
进一步的，所述光学膜片与所述显示面板之间设置有缓冲层。
进一步的，所述缓冲层包括层叠设置的弹性件和隔垫，所述弹性件与所述显示面板和所述光学膜片中的一者固定连接，所述显示面板和所述光学膜片中的另一者与所述弹性件之间设置所述隔垫。
进一步的，所述连接部还包括与所述第一固定部固定连接的第二固定部，所述第二固定部包括粘结固定层以及连接层；所述连接层通过所述粘结固定层与所述弯折部的内侧壁连接，所述连接层与所述密封层连接。
进一步的，所述弯折部绕所述背板的周侧设置，所述弯折部与所述背板之间形成容纳腔；所述背光模组还包括位于所述容纳腔中的光学膜片，所述光学膜片与所述弯折部的内侧壁之间设有间隙；所述光学膜片与所述显示面板之间设置有缓冲层，所述缓冲层包括层叠设置的弹性件和隔垫；所述弹性件与所述显示面板和所述光学膜片中的一者固定连接，所述显示面板和所述光学膜片中的另一者与所述弹性件之间设置所述隔垫，所述隔垫、所述连接层以及所述密封层一体成型，所述第一粘结层与所述粘结固定层一体成型。
进一步的，所述第一粘结层、所述第二粘结层以及所述粘结固定层均由粘性材料形成；所述隔垫、所述连接层以及所述密封层由绝缘密封材料形成。
进一步的，所述显示面板包括触摸屏体和位于所述触摸屏体的背侧的液晶屏体，所述液晶屏***于所述容纳腔中且与所述触摸屏体连接，所述第一固定部与所述触摸屏体的背面连接。
进一步的，所述背光模组还包括位于所述容纳腔内的光源、反射片以及导光板；所述光源固定设置于所述弯折部的内侧壁上；所述反射片和所述导光板均平行于所述背板，所述反射片固定设置于所述背板上，所述导光板位于所述反射片与所述光学膜片之间。
进一步的，所述光源位于所述导光板与所述弯折部之间。
进一步的，所述背光模组还包括位于所述容纳腔内的光源和扩散板；所述光源固定设置于所述背板上，所述扩散板位于所述光学膜片与所述光源之间，所述扩散板平行于所述背板。
有益效果
通过连接部取代常规设计中的中胶框结构，在保证背框模组与显示面板的连接强度和车载可靠性的前提下，在光学膜片的膨胀方向上减少了一个部材的厚度，从而满足液晶显示装置的窄边框设计需求，同时光学膜片与弯折部的内侧壁之间可以预留出足够空间，防止发生光学膜片因膨胀受阻导致褶皱而引起光学不良。
 附图说明
为了更清楚地说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简单介绍，显而易见地，下面描述中的附图仅仅是发明的一些实施例，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为本发明一实施方式中液晶显示装置的结构示意图；
图2为图1中连接部展平后的示意图；
图3为图2中展平后的连接部的俯视示意图；
图4为图2中展平后的连接部的左视示意图；
图5为图2中展平后的连接部的仰视示意图；
图6为本发明另一实施方式中液晶显示装置的结构示意图。
附图标记：
11、液晶屏体；12、触摸屏体；13、光学胶层；20、背光模组；21、背框；211、背板；212、弯折部；22、光源；23、光学膜片；24、反射片；25、导光板；26、扩散板；31、第一固定部；311、第一粘结层；312、密封层；313、第二粘结层；32、第二固定部；321、粘结固定层；322、连接层；40、缓冲层；41、弹性件；42、隔垫；50、容纳腔。
 本发明的实施方式
以下各实施例的说明是参考附加的图示，用以例示本发明可用以实施的特定实施例。本发明所提到的方向用语，例如[上]、[下]、[前]、[后]、[左]、[右]、[内]、[外]、[侧面]等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本发明，而非用以限制本发明。在图中，结构相似的单元是用以相同标号表示。
本发明针对现有的液晶显示装置中，一般会在背框侧部采用中胶框结构将背框与触摸屏固定，从而导致无法满足窄边框需求的技术问题。本发明可以解决上述问题。
一种液晶显示装置，如图1所示，所述液晶显示装置包括显示面板、背光模组20以及连接固定所述背光模组20与所述显示面板的连接部。
其中，所述显示面板包括触摸屏体12和位于所述触摸屏体12的背侧的液晶屏体11，所述液晶屏体11通过一光学胶层13与所述触摸屏体12连接固定。
其中，所述背光模组20包括背框21，所述背框21包括背板211和与所述背板211连接的弯折部212，所述背板211位于所述显示面板的背侧，所述弯折部212围绕所述背板211的周侧设置且朝向所述显示面板，所述弯折部212与所述背板211之间形成一容纳腔50。
其中，所述连接部包括位于所述弯折部212的端面处的第一固定部31，所述第一固定部31绕所述弯折部212的周侧设置，所述第一固定部31与所述弯折部212的端面以及所述显示面板固定连接，所述弯折部212的端面在所述显示面板上的正投影包纳所述第一固定部31的外侧在所述显示面板上的正投影。
需要说明的是，所述第一固定部31的外侧为第一固定部31远离所述弯折部212的内侧壁的一侧。
通过第一固定部31取代常规设计中的中胶框结构，在保证背框21模组与显示面板的连接强度和车载可靠性的前提下，在光学膜片23的膨胀方向上减少了一个部材的厚度，从而可以满足液晶显示装置的窄边框设计需求。
在一实施方式中，所述弯折部212与所述背板211相互垂直且一体成型，所述弯折部212和所述背板211的制备材料包括但不限于钣金或铝合金。
需要说明的是，实际实施中，背板211与弯折部212也可分别形成后再通过焊接或活动连接组装等方式连接，从而形成背框21。
进一步的，所述第一固定部31包括层叠设置的第一粘结层311、密封层312以及第二粘结层313，所述密封层312通过所述第一粘结层311与所述弯折部212的端面连接，所述密封层312通过所述第二粘结层313与所述显示面板连接。
在一实施方式中，所述第一粘结层311与所述弯折部212的端面贴合，所述第二粘结层313与所述显示面板贴合连接，所述密封层312利用第一粘结层311和第二粘结层313的粘性与所述弯折部212的端面以及所述显示面板粘结。
在一实施方式中，所述第一粘结层311和所述第二粘结层313均由双面胶或泡棉胶等粘性材料形成，所述密封层312由麦拉胶带、聚对苯二甲酸类塑料或聚甲基丙烯酸甲酯等绝缘密封材料形成，在此不一一列举。
具体的，所述连接部还包括与所述第一固定部31固定连接的第二固定部32，所述第二固定部32位于所述弯折部212的内侧且与所述弯折部212的内侧壁固定连接。
利用第二固定部32同时与弯折部212的内侧壁以及第一固定部31固定连接，从而增强显示面板与弯折部212的连接强度，防止显示面板与背框21脱离。
在一实施方式中，所述第二固定部32包括粘结固定层321，以及，与所述粘结固定层321固定连接的连接层322；所述粘结固定层321和所述连接层322平行于所述弯折部212，所述粘结固定层321与所述弯折部212的内侧壁贴合固定，所述连接层322与所述密封层312连接固定。
所述背光模组20还包括位于所述容纳腔50中的光学膜片23，所述光学膜片23与所述背板211平行且安装于所述背框21上，所述光学膜片23与所述弯折部212的内侧壁之间设有间隙。
在一实施方式中，所述第二固定部32未延伸至所述光学膜片23与所述弯折部212的内侧壁之间的间隙中。
需要说明的是，光学膜片23与弯折部212的内侧壁之间预留间隙的目的是为了让光学膜片23在处于高温状态时有足够的膨胀空间，防止发生光学膜片23因膨胀受阻导致褶皱而引起光学不良，而这个膨胀空间是由光学膜片23的材质、尺寸以及外部温度条件决定的，实际实施中，也可根据实际情况确定光学膜片23的侧壁与所述弯折部212的内侧壁之间的间距大小。
在一实施方式中，所述光学膜片23的侧壁与所述弯折部212的内侧壁之间的间距为0.2～1.4毫米。
具体的，所述液晶屏体11位于所述容纳腔50中，所述第一固定部21与所述触摸屏体12的背面固定连接。
具体的，所述光学膜片23与所述液晶屏体11之间设置有缓冲层40，所述缓冲层40与所述光学膜片23和所述液晶屏体11接触，从而利用缓冲层40的缓冲性能缓解光学膜片23形变时对液晶屏体11造成的影响。
进一步的，所述液晶屏体11和所述光学膜片23中的一者与所述缓冲层40固定连接，另一者与所述缓冲层40无限位连接，从而避免光学膜片23被完全固定于液晶屏体11上导致高温时光学膜片23无法延展。
进一步的，所述缓冲层40包括层叠设置的弹性件41和隔垫42，所述弹性件41与所述液晶屏体11和所述光学膜片23中的一者固定连接，所述液晶屏体11和所述光学膜片23中的另一者与所述弹性件41之间设置所述隔垫42。
需要说明的是，图1中仅示意了弹性件41与液晶屏体11固定连接，并且隔垫42位于弹性件41与光学膜片23之间的情况，实际实施中，弹性件41还可与光学膜片23固定连接，并且隔垫42位于弹性件41与液晶屏体11之间。
在一实施方式中，所述弹性件41为双面泡棉，所述弹性件41上与所述隔垫42连接的一侧具有粘性，所述弹性件41上远离所述隔垫42的一侧无粘性。
需要说明的是，实际实施中，弹性件41还可以由其他材料形成，如海绵、柔性橡胶或柔性塑料等在此不一一列举。
参见图2至图5，图2为图1中连接部展平后的示意图，图3为图2中展平后的连接部的俯视图，图4为图2中展平后的连接部的左视图，图5为图2中展平后的连接部的仰视图。
如图2至图5所示，在一实施方式中，所述第一粘结层311与所述粘结固定层321一体成型；所述隔垫42与所述密封层312以及所述连接层322一体成型。
需要说明的是，实际实施中，也可分别采用不同材料形成第一粘结层311和粘结固定层321，如第一粘结层311使用双面胶形成，粘结固定层321使用泡棉胶形成，在此不一一列举。
需要说明的是，实际实施中，所述密封层312、所述连接层322以及所述隔垫42也可由不同的材料分别形成，如密封层312由麦拉胶带形成，连接层322由聚对苯二甲酸类塑料形成，隔垫42由聚甲基丙烯酸甲酯形成，在此不一一列举。
在一实施方式中，所述背光模组20还包括位于所述容纳腔50内的光源22、反射片24以及导光板25；所述光源22固定设置于所述弯折部212的内侧壁上；所述反射片24和所述导光板25均平行于所述背板211，所述反射片24固定设置于所述背板211上，所述导光板25位于所述反射片24与所述光学膜片23之间。
进一步的，所述光源22位于所述导光板25与所述弯折部212之间，从而避免光源22对光学膜片23的膨胀造成阻碍。
在另一实施方式中，如图6所示，所述背光模组20还包括位于所述容纳腔内50的光源22和扩散板26；所述光源22固定设置于所述背板211上，所述扩散板26位于所述光学膜片23与所述光源22之间，所述扩散板26平行于所述背板211。
本发明的有益效果为：通过连接部取代常规设计中的中胶框结构，在保证背框21模组与显示面板的连接强度和车载可靠性的前提下，在光学膜片23的膨胀方向上减少了一个部材的厚度，从而满足液晶显示装置的窄边框设计需求，同时光学膜片23与弯折部212的内侧壁之间可以预留出足够空间，防止发生光学膜片23因膨胀受阻导致褶皱而引起光学不良。
综上所述，虽然本发明已以优选实施例揭露如上，但上述优选实施例并非用以限制本发明，本领域的普通技术人员，在不脱离本发明的精神和范围内，均可作各种更动与润饰，因此本发明的保护范围以权利要求界定的范围为准。

Claims (20)

  1. 一种液晶显示装置，其中，所述液晶显示装置包括显示面板、背光模组以及连接所述背光模组与所述显示面板的连接部；所述背光模组包括背框，所述背框包括背板和与所述背板连接的弯折部；
    其中，所述连接部包括位于所述弯折部的端面上的第一固定部，所述第一固定部与所述弯折部的端面以及所述显示面板固定连接，所述弯折部的端面在所述显示面板上的正投影包纳所述第一固定部的外侧在所述显示面板上的正投影；所述第一固定部包括层叠设置的第一粘结层、密封层以及第二粘结层，所述密封层通过所述第一粘结层与所述弯折部的端面连接，所述密封层通过所述第二粘结层与所述显示面板连接；所述连接部还包括与所述第一固定部固定连接的第二固定部，所述第二固定部位于所述弯折部的内侧且与所述弯折部的内侧壁连接。
  2. 根据权利要求1所述的液晶显示装置，其中，所述弯折部绕所述背板的周侧设置，所述弯折部与所述背板之间形成容纳腔；所述背光模组还包括位于所述容纳腔中的光学膜片，所述光学膜片与所述弯折部的内侧壁之间设有间隙。
  3. 根据权利要求2所述的液晶显示装置，其中，所述光学膜片与所述显示面板之间设置有缓冲层。
  4. 根据权利要求3所述的液晶显示装置，其中，所述缓冲层包括层叠设置的弹性件和隔垫，所述弹性件与所述显示面板和所述光学膜片中的一者固定连接，所述显示面板和所述光学膜片中的另一者与所述弹性件之间设置所述隔垫。
  5. 根据权利要求1所述的液晶显示装置，其中，所述连接部还包括与所述第一固定部固定连接的第二固定部，所述第二固定部包括粘结固定层以及连接层；所述连接层通过所述粘结固定层与所述弯折部的内侧壁连接，所述连接层与所述密封层连接。
  6. 根据权利要求5所述的液晶显示装置，其中，所述弯折部绕所述背板的周侧设置，所述弯折部与所述背板之间形成容纳腔；所述背光模组还包括位于所述容纳腔中的光学膜片，所述光学膜片与所述弯折部的内侧壁之间设有间隙；所述光学膜片与所述显示面板之间设置有缓冲层，所述缓冲层包括层叠设置的弹性件和隔垫；所述弹性件与所述显示面板和所述光学膜片中的一者固定连接，所述显示面板和所述光学膜片中的另一者与所述弹性件之间设置所述隔垫，所述隔垫、所述连接层以及所述密封层一体成型，所述第一粘结层与所述粘结固定层一体成型。
  7. 根据权利要求6所述的液晶显示装置，其中，所述第一粘结层、所述第二粘结层以及所述粘结固定层均由粘性材料形成；所述隔垫、所述连接层以及所述密封层由绝缘密封材料形成。
  8. 一种液晶显示装置，其中，所述液晶显示装置包括显示面板、背光模组以及连接所述背光模组与所述显示面板的连接部；所述背光模组包括背框，所述背框包括背板和与所述背板连接的弯折部；
    其中，所述连接部包括位于所述弯折部的端面上的第一固定部，所述第一固定部与所述弯折部的端面以及所述显示面板固定连接，所述弯折部的端面在所述显示面板上的正投影包纳所述第一固定部的外侧在所述显示面板上的正投影。
  9. 根据权利要求8所述的液晶显示装置，其中，所述第一固定部包括层叠设置的第一粘结层、密封层以及第二粘结层，所述密封层通过所述第一粘结层与所述弯折部的端面连接，所述密封层通过所述第二粘结层与所述显示面板连接。
  10. 根据权利要求8所述的液晶显示装置，其中，所述连接部还包括与所述第一固定部固定连接的第二固定部，所述第二固定部位于所述弯折部的内侧且与所述弯折部的内侧壁连接。
  11. 根据权利要求8所述的液晶显示装置，其中，所述弯折部绕所述背板的周侧设置，所述弯折部与所述背板之间形成容纳腔；所述背光模组还包括位于所述容纳腔中的光学膜片，所述光学膜片与所述弯折部的内侧壁之间设有间隙。
  12. 根据权利要求11所述的液晶显示装置，其中，所述光学膜片与所述显示面板之间设置有缓冲层。
  13. 根据权利要求12所述的液晶显示装置，其中，所述缓冲层包括层叠设置的弹性件和隔垫，所述弹性件与所述显示面板和所述光学膜片中的一者固定连接，所述显示面板和所述光学膜片中的另一者与所述弹性件之间设置所述隔垫。
  14. 根据权利要求9所述的液晶显示装置，其中，所述连接部还包括与所述第一固定部固定连接的第二固定部，所述第二固定部包括粘结固定层以及连接层；所述连接层通过所述粘结固定层与所述弯折部的内侧壁连接，所述连接层与所述密封层连接。
  15. 根据权利要求14所述的液晶显示装置，其中，所述弯折部绕所述背板的周侧设置，所述弯折部与所述背板之间形成容纳腔；所述背光模组还包括位于所述容纳腔中的光学膜片，所述光学膜片与所述弯折部的内侧壁之间设有间隙；所述光学膜片与所述显示面板之间设置有缓冲层，所述缓冲层包括层叠设置的弹性件和隔垫；所述弹性件与所述显示面板和所述光学膜片中的一者固定连接，所述显示面板和所述光学膜片中的另一者与所述弹性件之间设置所述隔垫，所述隔垫、所述连接层以及所述密封层一体成型，所述第一粘结层与所述粘结固定层一体成型。
  16. 根据权利要求15所述的液晶显示装置，其中，所述第一粘结层、所述第二粘结层以及所述粘结固定层均由粘性材料形成；所述隔垫、所述连接层以及所述密封层由绝缘密封材料形成。
  17. 根据权利要求11所述的液晶显示装置，其中，所述显示面板包括触摸屏体和位于所述触摸屏体的背侧的液晶屏体，所述液晶屏***于所述容纳腔中且与所述触摸屏体连接，所述第一固定部与所述触摸屏体的背面连接。
  18. 根据权利要求11所述的液晶显示装置，其中，所述背光模组还包括位于所述容纳腔内的光源、反射片以及导光板；所述光源固定设置于所述弯折部的内侧壁上；所述反射片和所述导光板均平行于所述背板，所述反射片固定设置于所述背板上，所述导光板位于所述反射片与所述光学膜片之间。
  19. 根据权利要求18所述的液晶显示装置，其中，所述光源位于所述导光板与所述弯折部之间。
  20. 根据权利要求11所述的液晶显示装置，其中，所述背光模组还包括位于所述容纳腔内的光源和扩散板；所述光源固定设置于所述背板上，所述扩散板位于所述光学膜片与所述光源之间，所述扩散板平行于所述背板。
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