WO2017219401A1 - 窄边框背光模组及液晶显示器 - Google Patents

窄边框背光模组及液晶显示器 Download PDF

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Publication number
WO2017219401A1
WO2017219401A1 PCT/CN2016/089721 CN2016089721W WO2017219401A1 WO 2017219401 A1 WO2017219401 A1 WO 2017219401A1 CN 2016089721 W CN2016089721 W CN 2016089721W WO 2017219401 A1 WO2017219401 A1 WO 2017219401A1
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WO
WIPO (PCT)
Prior art keywords
frame
bump
backlight module
plastic
bumps
Prior art date
Application number
PCT/CN2016/089721
Other languages
English (en)
French (fr)
Inventor
张巍
陈仕祥
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 US15/301,962 priority Critical patent/US10012790B2/en
Publication of WO2017219401A1 publication Critical patent/WO2017219401A1/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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133608—Direct backlight including particular frames or supporting means
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0055—Reflecting element, sheet or layer
    • 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
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0065—Manufacturing aspects; Material aspects
    • 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
    • G02F1/133322—Mechanical guidance or alignment of LCD panel support components

Definitions

  • the present invention relates to the field of liquid crystal display technologies, and in particular, to a narrow frame backlight module and a liquid crystal display having the narrow frame backlight module.
  • the width of the frame of the backlight module is directly related to the width of the border of the mobile phone.
  • a black-and-white double-sided or black-and-black double-sided glue is attached to the plastic frame to achieve the function of connecting the liquid crystal module and the backlight module and preventing the film from jumping off.
  • the word glue is also used to cover the gap between the light guide plate and the optical film and the plastic frame in the backlight module, thereby preventing light leakage.
  • the word glue should prevent the film from jumping off.
  • the inner ring of the ring structure must extend to the optical film and have certain requirements on the width extending to the optical film. At the same time, the mouth glue should be attached.
  • On the plastic frame a certain stability is required, so the plastic frame also needs a certain width to ensure the strength of the bonding, so that the minimum value of the width of the plastic frame is also required.
  • the frame of the existing liquid crystal display module is narrower and narrower, so that the width of the sides of the plastic frame is less than the mass production limit of 0.45 mm, which makes the processing and assembly of the lip glue in the current narrow frame project have great difficulty.
  • the prior art has the following technical problems: in the existing plastic frame structure, when the frame of the plastic frame is too narrow, the bonding area of the mouth glue cannot be sufficient to be fixed, thereby failing to realize the lip gloss to the backlight module and the panel. Strong bonding.
  • the invention provides a narrow-frame backlight module, which can realize the extremely narrow frame of the plastic frame while ensuring the width of the mouth-shaped glue to meet the bonding strength between the backlight module and the panel.
  • a narrow bezel backlight module which includes:
  • a reflective sheet for reflecting light onto a desired surface
  • a light guide plate for converting a light emitted by the light source into a surface light source in a desired direction of design
  • a plastic frame comprising an iron frame at the bottom and a plastic member disposed on the iron frame for fixing the light guide plate; wherein the bottom of the iron frame is respectively located on a side of the light source and opposite to the light source One side extends and is provided with a bent structure at the end;
  • a bump portion formed by filling a plastic in the bent structure of the plastic frame; an upper surface of the bump portion is flush with an upper surface of the plastic frame; and a width of the bump in the bump portion is 0.1 0.15mm;
  • the bump portion includes a first bump group and a second bump group, and the first bump group and the second bump group are respectively disposed on two sides of the plastic frame.
  • the first set of bumps is laterally spaced from the bumps in the second set of bumps.
  • the bumps in the first set of bumps and the bumps in the second set of bumps are symmetrical about the longitudinal axis of the frame.
  • the bumps in the first set of bumps and the bumps in the second set of bumps are symmetrical about the transverse axis of the frame.
  • the spacing between adjacent bumps is set the same.
  • the spacing between adjacent bumps is set differently.
  • the pitch of the bumps near the ends of the frame is smaller than the pitch of the bumps near the frame.
  • the frame side border width is 0.2 to 0.3 mm.
  • the frame of the sealant is pasted on the top of the frame, and the frame of the mouthpiece extends to the edge of the bump, and the other side is beyond the other side.
  • the inside of the plastic frame is 0.1 to 0.2 mm.
  • the width of the stencil border is 0.45 to 0.55 mm.
  • the invention also provides a narrow frame backlight module, comprising:
  • a reflective sheet for reflecting light onto a desired surface
  • a light guide plate for converting a light emitted by the light source into a surface light source in a desired direction of design
  • a plastic frame comprising an iron frame at the bottom and a plastic member disposed on the iron frame for fixing the light guide plate; wherein the bottom of the iron frame is respectively located on a side of the light source and opposite to the light source One side extends and is provided with a bent structure at the end;
  • the bump portion is formed by filling a plastic in the bent structure of the plastic frame; the upper surface of the bump portion is flush with the upper surface of the plastic frame.
  • the bump portion includes a first bump group and a second bump group, and the first bump group and the second bump group are respectively disposed on two sides of the plastic frame.
  • the first bump group and the bump of the second bump group are laterally spaced apart.
  • the bumps in the first set of bumps and the bumps in the second set of bumps are symmetrical about the longitudinal axis of the frame.
  • the first set of bumps and the bumps of the second set of bumps are staggered.
  • the spacing between adjacent bumps is set the same.
  • the spacing between adjacent bumps is set differently.
  • the pitch of the bumps near the ends of the frame is smaller than the pitch of the bumps near the frame.
  • the side frame of the plastic frame is 0.2 to 0.3 mm.
  • the frame of the sealant is pasted on the top of the frame, and the frame of the seal extends to the edge of the bump and extends beyond the glue on the other side.
  • the inside of the frame is 0.1 to 0.2 mm.
  • the width of the mouth-shaped plastic frame is 0.45 to 0.55 mm.
  • a liquid crystal display includes: a narrow bezel backlight module, and a liquid crystal panel fixed on the narrow bezel backlight module; the narrow bezel backlight module includes:
  • a reflective sheet for reflecting light onto a desired surface
  • a light guide plate for converting a light emitted by the light source into a surface light source in a desired direction of design
  • a plastic frame comprising an iron frame at the bottom and a plastic member disposed on the iron frame for fixing the light guide plate; wherein the bottom of the iron frame is respectively located on a side of the light source and opposite to the light source One side extends and is provided with a bent structure at the end;
  • the bump portion is formed by filling a plastic in the bent structure of the plastic frame; the upper surface of the bump portion is flush with the upper surface of the plastic frame.
  • the bump portion includes a first bump group and a second bump group, and the first bump group and the second bump group are respectively disposed on two sides of the plastic frame.
  • the first bump group and the bump of the second bump group are laterally spaced apart.
  • the bumps in the first set of bumps and the bumps in the second set of bumps are symmetrical about the longitudinal axis of the frame.
  • the first set of bumps and the bumps of the second set of bumps are staggered.
  • the spacing between adjacent bumps is set the same.
  • the spacing between adjacent bumps is set differently.
  • the pitch of the bumps near the ends of the frame is smaller than the pitch of the bumps near the frame.
  • the side frame of the plastic frame has a width of 0.2 to 0.3 mm.
  • the frame of the sealant is pasted on the top of the frame, and the frame of the seal extends to the edge of the bump and extends beyond the glue on the other side.
  • the inside of the frame is 0.1 to 0.2 mm.
  • the width of the mouth-shaped plastic frame is 0.45 to 0.55 mm.
  • the invention has the following advantages: the narrow-frame backlight module provided by the invention and the liquid crystal display having the narrow-frame backlight module, the plastic frame is designed to be iron-plastic integrated, and a plurality of plastic parts are protruded from the edge of the plastic frame.
  • the sawtooth is used to increase the bonding area of the lip glue, thereby solving the problem that the width of the sides of the plastic frame is insufficient and difficult to process, and it is difficult to assemble due to the narrow width of the sides of the plastic frame, thereby further realizing the liquid crystal display of the same size. Wide display.
  • FIG. 1 is a front view of a backlight module of the present invention
  • Figure 2 is a cross-sectional view of the backlight module of Figure 1 taken along line A-A';
  • FIG. 3 is a left side view of the backlight module of FIG. 1;
  • FIG. 4 is a simplified schematic view of the structure of the backlight module of the present invention.
  • FIG. 5 is a simplified schematic view of the structure of the backlight module of the present invention.
  • FIG. 6 is a simplified schematic view of the structure of the backlight module of the present invention.
  • the present invention is directed to the conventional backlight module in the assembly process, the frame of the plastic frame is too narrow to meet the complete attachment of the mouth-shaped glue, and the word-shaped glue cannot achieve the problem of firmly bonding the backlight module and the panel.
  • the new backlight module can effectively overcome this defect.
  • the narrow bezel backlight module includes an optical film 109, a light guide plate 105 for converting the light emitted by the light source into a surface light source of a desired direction for designing, for reflecting light to a desired state.
  • the bump portion includes a first bump group 103 and a second bump group 104, and the first bump group 103 and the first The two bump groups 104 are respectively disposed on the two sides of the plastic frame; the upper surfaces of the first bump group 103 and the second bump group 104 are flush with the upper surface of the plastic frame;
  • the block group 103 is laterally spaced from the bumps of the second bump group 104.
  • the plastic frame is integrally formed of iron and plastic, and includes an iron frame 102.
  • the bottom of the iron frame 102 extends toward a side of the light source 108 and a side opposite to the light source 108, and is disposed at an end.
  • There is a bending structure 110 protrudes from the side of the iron frame 102 to form a cavity, each cavity corresponding to injection molding fills a bump; the upper surface of the bump and the upper surface of the plastic frame Flush as the extended surface of the upper surface of the plastic frame.
  • the width of the side frame of the plastic frame is 0.2-0.3 mm, and the side of the frame of the sealing glue 101 protrudes from the side of the bending structure 110 by 0.1 to 0.2 mm, and the width of the border of the sealing glue 101 is 0.45 to 0.55.
  • the width of the border of the lip glue 101 is 0.55 mm
  • the width of the side frame of the plastic frame is 0.3 mm
  • the side of the border of the lip glue 101 is 0.1 mm of the side of the bending structure 110.
  • the width limit of the mouth-shaped glue 101 is about 0.55mm, and 0.6mm.
  • the width of the border of the border of the border of the border is only 0.3 mm, less than 0.55 mm, and it is difficult to completely attach the lip glue 101 with a frame width of 0.55 mm.
  • the present invention designs a plurality of the bumps on the side of the frame to form a sawtooth.
  • the plastic frame extending surface is attached to the mouth glue 101.
  • the protrusion may be provided with a protruding width of 0.15 mm, and the frame width of the frame is The sum of the widths of the bumps is 0.55 mm.
  • the side of the lip glue extends to 0.1 mm after the edge of the bump, and the width of 0.1 mm protrudes from the side of the bent structure 110 to avoid assembly tolerances.
  • the frame of the stencil is not completely adhered to the frame; so that the stencil 101 satisfying the width of the current mass production size has a better adhesion effect.
  • the bump portion of the present invention has the following distribution modes:
  • the present invention provides a backlight module including a light guide plate 105 for converting light emitted by the light source 108 into a surface light source 108 of a desired direction, a reflection sheet 106 for reflecting light onto a desired surface, a light source 108 for providing backlighting to the liquid crystal panel 107, a plastic frame for fixing the light guide plate 105, and a sealant attached to the surface of the plastic frame; and a bump portion including the first bump group 103 and the second
  • the first bump group 103 and the second bump group 104 are respectively disposed on two sides of the plastic frame 202; the first bump group 103 and the upper surface of the second bump group 104; Both are flush with the upper surface of the plastic frame; the first bump group 103 and the bumps of the second bump group 104 are laterally spaced apart.
  • the plastic frame is integrally formed of iron and plastic, and includes an iron frame 102, wherein the bottom of the iron frame 102 extends toward a side of the light source and a side opposite to the light source 108, and is disposed at an end thereof.
  • a bending structure 110 protrudes from the side of the iron frame 102 to form a cavity, each cavity correspondingly injection molding a bump; the upper surface of the bump and the upper surface of the iron frame 102 It is flush and serves as an extension surface of the upper surface of the iron frame 102.
  • the bumps in the first bump group 203 on both sides of the iron frame 202 and the bumps in the second bump group 204 are in the longitudinal axis of the iron frame 202.
  • the center is symmetrically disposed, and the first bump group 203 is the same as the spacing between adjacent bumps in the second bump group 204; for example, the first bump group 203 and the second bump group 204 are The number of the included bumps is the same, and the connecting lines of any two opposing bumps located on the left and right sides of the iron frame 202 are parallel to the connecting lines of the other sets of opposing bumps.
  • the protrusions on both sides of the iron frame 202 are symmetrically arranged, so that the protrusions are conveniently arranged, and the sides of the mouth glue are glued on the surface of the iron frame 202.
  • the joint strength is the same and the paste is firm.
  • the first bump group 303 located on both sides of the iron frame 302 and the adjacent bumps in the second bump group 304 have the same pitch, and the first bump group 303 is interleaved with the second bump set 304; for example, the first bump set 303 includes three bumps, and the second bump set 304 includes two bumps, the second bump set
  • the bump is located on the opposite side of the iron frame 302 between the two bumps of the first bump group 303, and the lateral surface of each part of the iron frame 302 is provided with an adhesive surface to realize the mouth.
  • the adhesive point of the surface glue on the surface of the iron frame 302 is more dense, and the adhesive force of the mouth-shaped glue adhered to the surface of the iron frame 302 is evenly distributed, and the adhesive is firmly adhered.
  • the bumps on both sides of the iron frame 302 are alternately arranged in a staggered manner, so that the adhesive force of the mouth-shaped glue integrally pasted on the surface of the iron frame 302 is evenly distributed, thereby making the mouth-shaped word glued. Stick firmly.
  • the first bump group 403 and the second bump group 404 are located on both sides of the iron frame 402, and the first bump group 403 and the second bump group 404 are symmetrical. And, the first bump group 403 and the adjacent bumps of the second bump group 404 are non-equally spaced apart.
  • the first bump group 403 includes five bumps, wherein four bumps are respectively disposed at two ends of the side of the iron frame 402 in two groups, wherein two bumps in a group
  • the pitch is smaller than the pitch of the bumps in the equidistant distribution
  • the remaining one of the bumps is disposed at an intermediate portion of the iron frame 402, and the center of gravity is transferred to both ends of the iron frame 402, thereby saving the adhesive force without changing the bonding strength.
  • the arrangement of the second bump group 404 and the first bump group 403 is symmetrical with respect to the longitudinal axis of the iron frame 402, and details are not described herein.
  • the first bump group 403 includes five bumps.
  • One of the bumps is first disposed at an intermediate portion of the side of the iron frame 402, and the other four bumps are symmetrically disposed on two of the bumps.
  • the adhesion between the stencil and the iron frame 402 is stronger; the second bump group 404 is symmetrical with the first bump group 403, and details are not described herein.
  • the portion of the stencil attached to the end of the iron frame 402 is relatively easy to be edged, and further extends along the edge to the interior of the stencil, thereby affecting the product. Therefore, the sticking force at the end of the iron frame 402 is larger than the middle portion of the iron frame 402 to solve the above problem.
  • the present invention also provides a liquid crystal display comprising a backlight module at the lower portion and a liquid crystal module at the upper portion, and the backlight module at the lower portion provides backlight for the upper liquid crystal module;
  • the liquid crystal module includes The lower polarizing plate, the liquid crystal layer and the upper polarizing plate are sequentially stacked;
  • the narrow-frame backlight module comprises: a plastic frame, comprising an iron frame at the bottom and a plastic member disposed on the iron frame for fixing the light guide plate Wherein the bottom of the iron frame extends toward a side of the light source, and a side opposite to the light source, and is provided with a bent structure at the end; a lip glue is adhered to the surface of the plastic frame; And the bump portion is formed by filling the plastic in the bent structure of the plastic frame; the upper surface of the bump portion is flush with the upper surface of the plastic frame.
  • the bump portion includes a first bump group and a second bump group, and the first bump group and the second bump group are respectively disposed on two sides of the plastic frame.
  • the first bump group and the bump of the second bump group are laterally spaced apart.
  • the bumps in the first bump group and the bumps in the second bump group are symmetrical with respect to a longitudinal axis of the plastic frame.
  • the first bump group and the bump of the second bump group are staggered.
  • the spacing between adjacent bumps is set the same.
  • the spacing between adjacent bumps is set differently.
  • the pitch of the bumps near the ends of the frame is smaller than the pitch of the bumps near the frame.
  • the side frame of the plastic frame has a width of 0.2 to 0.3 mm.
  • the frame of the sealant is attached to the top of the frame, and the frame of the mouthpiece extends to the edge of the bump, and the other side is 0.1 to 0.2 mm beyond the inside of the frame. .
  • the width of the mouth-shaped plastic frame is 0.45 to 0.55 mm.
  • the specific structure of the liquid crystal display provided by the present invention is the same as or similar to the preferred embodiment of the above-described narrow-frame backlight module. For details, refer to the related description in the preferred embodiment of the backlight module.
  • the narrow-frame backlight module provided by the invention and the liquid crystal display having the narrow-frame backlight module have the plastic frame integrated into iron and plastic, and a plurality of plastic parts are protruded from the edge of the plastic frame to form serrations to increase the lip-shaped glue.
  • the bonding area is solved, thereby solving the problem that the width of the sides of the plastic frame is insufficient and difficult to process, and the width of both sides of the plastic frame is difficult to be assembled, and the liquid crystal display of the same size has a wider display screen.

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

Abstract

一种窄边框背光模组及具有背光模组的液晶显示器，背光模组包括光源（108）、导光板（105）、反射片（106）、胶框及口字胶（101）；将胶框设计成铁塑一体，使若干塑胶部分凸出胶框边缘以增加口字胶（101）的粘贴面积，从而解决了胶框两侧边宽度不足而难以加工以及由于胶框两侧边宽度较窄而难以组装的问题。

Description

窄边框背光模组及液晶显示器 技术领域
本发明涉及液晶显示技术领域，特别是涉及一种窄边框背光模组及一种具有所述窄边框背光模组的液晶显示器。
 背景技术
随着移动通讯产品及平板电脑技术的发展，许多手机厂商以“窄边框”作为卖点吸引消费者。而背光模组的胶框宽度则直接关系到手机边框的宽度。
在传统的背光模组上，会在胶框上贴黑白双面或黑黑双面的口字胶，以此来达到连接液晶模组与背光模组以及防止膜片跳脱的作用，同时口字胶还用于遮掩背光模组内导光板及光学膜片与胶框的间隙，起到防漏光的作用。
口字胶要能防止膜片跳脱，其环状结构的内环一定要延伸到光学膜片上，并且对延伸到光学膜片上的宽度有一定的要求，同时，口字胶要贴合在胶框上，需要一定的稳定性，因此胶框也需要一定的宽度来保证贴合的强度，从而对胶框宽度的最小值也提出了要求。
现有液晶显示模组的边框越来越窄，致使胶框两侧边宽度已小于0.45mm的量产极限值，致使目前窄边框项目中口字胶的加工及组装有很大的困难。
因此，现有技术存在以下技术问题：现有的胶框结构，当胶框边框过窄时，不能给口字胶充足的粘接面积以固定，从而无法实现口字胶对背光模组与面板的牢固粘接。
 技术问题
本发明提供一种窄边框背光模组，可以在胶框实现极窄边框的同时保证了口字胶的宽度以满足背光模组与面板的粘接强度。
 技术解决方案
为解决上述问题，本发明提供的一种窄边框背光模组，其包括：
光源，为液晶面板提供背光；
反射片，用于将光线反射到需要的面上；
导光板，用于将所述光源发出的光线转换成设计所需方向的面光源；
胶框，包括位于底部的铁框以及设置在铁框上的塑胶件，用于固定所述导光板；其中所述铁框底部分别向位于所述光源的一侧，及与所述光源相对的一侧延伸并在端部设置有折弯结构；
口字胶，粘合于所述胶框表面；以及
凸块部，通过在所述胶框的折弯结构中填充塑胶形成；所述凸块部的上表面与所述胶框上表面平齐；所述凸块部中的凸块宽度为0.1～0.15mm；
其中所述凸块部包括第一凸块组与第二凸块组，所述第一凸块组与第二凸块组分别设置于所述胶框两侧。
根据本发明的一个优选实施例，其中所述第一凸块组与第二凸块组中的凸块横向间隔分布。
根据本发明的一个优选实施例，其中所述第一凸块组中的凸块与第二凸块组中的凸块以所述胶框的纵向轴线为中心相对称设置。
根据本发明的一个优选实施例，其中所述第一凸块组中的凸块与第二凸块组中的凸块以所述胶框的横向轴线为中心相对称设置。
根据本发明的一个优选实施例，其中相邻凸块间的间距设置相同。
根据本发明的一个优选实施例，其中相邻凸块间的间距设置不同。
根据本发明的一个优选实施例，其中靠近所述胶框两端的凸块间距小于靠近所述胶框中部的凸块的间距。
根据本发明的一个优选实施例，其中所述胶框一侧边框宽度为0.2～0.3mm。
根据本发明的一个优选实施例，其中所述口字胶的边框粘贴于所述胶框顶部，并且，所述口字胶的边框一边延伸至所述凸块部边缘，相对另一边超出所述胶框内侧0.1～0.2mm。
根据本发明的一个优选实施例，其中所述口字胶边框宽度为0.45～0.55mm。
本发明还提供了一种窄边框背光模组，包括：
光源，为液晶面板提供背光；
反射片，用于将光线反射到需要的面上；
导光板，用于将所述光源发出的光线转换成设计所需方向的面光源；
胶框，包括位于底部的铁框以及设置在铁框上的塑胶件，用于固定所述导光板；其中所述铁框底部分别向位于所述光源的一侧，及与所述光源相对的一侧延伸并在端部设置有折弯结构；
口字胶，粘合于所述胶框表面；以及
凸块部，通过在所述胶框的折弯结构中填充塑胶形成；所述凸块部的上表面与所述胶框上表面平齐。
根据本发明的一个优选实施例，所述凸块部包括第一凸块组与第二凸块组，所述第一凸块组与第二凸块组分别设置于所述胶框两侧。
根据本发明的一个优选实施例，所述第一凸块组与第二凸块组的凸块横向间隔分布。
根据本发明的一个优选实施例，所述第一凸块组中的凸块与第二凸块组中的凸块以所述胶框的纵向轴线为中心相对称设置。
根据本发明的一个优选实施例，所述第一凸块组与第二凸块组的凸块交错设置。
根据本发明的一个优选实施例，相邻凸块间的间距设置相同。
根据本发明的一个优选实施例，相邻凸块间的间距设置不同。
根据本发明的一个优选实施例，靠近所述胶框两端的凸块间距小于靠近所述胶框中部的凸块的间距。
根据本发明的一个优选实施例，所述胶框一侧边框为0.2～0.3mm。
根据本发明的一个优选实施例，所述口字胶的边框粘贴于所述胶框顶部，并且，所述口字胶的边框一边延伸至所述凸块部边缘，相对另一边超出所述胶框内侧0.1～0.2mm。
根据本发明的一个优选实施例，所述口字胶边框宽度为0.45～0.55mm。
依据本发明的上述目的，提出一种液晶显示器，包括：窄边框背光模组、及固定于所述窄边框背光模组上的液晶面板；所述窄边框背光模组包括：
光源，为液晶面板提供背光；
反射片，用于将光线反射到需要的面上；
导光板，用于将所述光源发出的光线转换成设计所需方向的面光源；
胶框，包括位于底部的铁框以及设置在铁框上的塑胶件，用于固定所述导光板；其中所述铁框底部分别向位于所述光源的一侧，及与所述光源相对的一侧延伸并在端部设置有折弯结构；
口字胶，粘合于所述胶框表面；以及
凸块部，通过在所述胶框的折弯结构中填充塑胶形成；所述凸块部的上表面与所述胶框上表面平齐。
根据本发明的一个优选实施例，所述凸块部包括第一凸块组与第二凸块组，所述第一凸块组与第二凸块组分别设置于所述胶框两侧。
根据本发明的一个优选实施例，所述第一凸块组与第二凸块组的凸块横向间隔分布。
根据本发明的一个优选实施例，所述第一凸块组中的凸块与第二凸块组中的凸块以所述胶框的纵向轴线为中心相对称设置。
根据本发明的一个优选实施例，所述第一凸块组与第二凸块组的凸块交错设置。
根据本发明的一个优选实施例，相邻凸块间的间距设置相同。
根据本发明的一个优选实施例，相邻凸块间的间距设置不同。
根据本发明的一个优选实施例，靠近所述胶框两端的凸块间距小于靠近所述胶框中部的凸块的间距。
根据本发明的一个优选实施例，所述胶框一侧边框宽度为0.2～0.3mm。
根据本发明的一个优选实施例，所述口字胶的边框粘贴于所述胶框顶部，并且，所述口字胶的边框一边延伸至所述凸块部边缘，相对另一边超出所述胶框内侧0.1～0.2mm。
根据本发明的一个优选实施例，所述口字胶边框宽度为0.45～0.55mm。
 有益效果
本发明的有益效果为：本发明所提供的窄边框背光模组及具有所述窄边框背光模组的液晶显示器，把胶框设计成铁塑一体，并且使若干塑胶部分凸出胶框边缘形成锯齿以增加口字胶的贴合面积，从而解决了胶框两侧边宽度不足而难以加工以及由于胶框两侧边宽度较窄而难以组装的问题，进一步实现了同等大小的液晶显示器具有更宽的显示屏。
 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是本发明背光模组正面示意图；
图2为图1的背光模组沿A-A’的剖面图；
图3为图1的背光模组的左视图；
图4是本发明的背光模组的结构简化示意图一；
图5是本发明的背光模组的结构简化示意图二；
图6是本发明的背光模组的结构简化示意图三。
 本发明的最佳实施方式
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。
本发明针对现有的背光模组在组装过程中，胶框边框过窄而无法满足口字胶完全贴附，导致口字胶无法实现对背光模组与面板牢固粘接的问题，提供一种新型的背光模组，可以有效地克服该缺陷。
请参阅图1至图3，窄边框背光模组包括光学膜片109、用于将所述光源发出的光线转换成设计所需方向的面光源的导光板105、用于将光线反射到需要的面上的反射片106、为液晶面板107提供背光的光源108、用于固定所述导光板105的胶框及贴附于所述胶框表面的口字胶101；所述口字胶101用于粘接所述窄边框背光模组与所述液晶模组，进一步，所述口字胶101上表面与下表面均为胶面，所述口字胶101下表面粘贴于所述胶框上表面，所述口字胶101上表面粘贴于所述液晶模组下表面；以及凸块部，包括第一凸块组103与第二凸块组104，所述第一凸块组103与第二凸块组104分别突出设置于所述胶框两侧；所述第一凸块组103与第二凸块组104的上表面均与所述胶框上表面平齐；所述第一凸块组103与第二凸块组104的凸块横向间隔分布。
所述胶框设置为铁塑一体，包括一铁框102，其中所述铁框102底部分别向位于所述光源108的一侧，及与所述光源108相对的一侧延伸并在端部设置有折弯结构110，所述折弯结构110突出所述铁框102侧部形成一腔体，每个腔体对应注塑填充一凸块；所述凸块的上表面与所述胶框上表面平齐，作为所述胶框上表面的延伸面。
所述胶框一侧边框宽度为0.2～0.3mm，所述口字胶101边框一侧伸出所述折弯结构110侧部0.1～0.2mm，所述口字胶101边框宽度为0.45～0.55mm；下面以所述口字胶101边框宽度为0.55mm、所述胶框一侧边框宽度为0.3mm、所述口字胶101边框一侧伸出所述折弯结构110侧部0.1mm为例进行说明。
目前口字胶101极限量产尺寸边框宽度为0.55mm，而0.6mm Border窄边框背板类型的胶框边框宽度只有0.3mm，小于0.55mm，难以完全贴附边框宽度为0.55mm的口字胶101；本发明设计在胶框侧面增设若干所述凸块，形成锯齿形的胶框延伸面以供口字胶101贴附，例如，当所述胶框边框宽度有0.3mm，可将所述凸块设置突出宽度为0.15mm，所述胶框边框宽度与所述凸块宽度之和为0.55mm，因此，所述口字胶一侧延伸至所述凸块边缘后剩余0.1mm，该0.1mm的宽度伸出所述折弯结构110侧部以避免因组装公差而导致所述口字胶的边框没有完全粘贴于所述胶框上；从而满足目前极限量产尺寸边框宽度的口字胶101与所述胶框之间具有较佳粘贴效果。
本发明的凸块部具有以下几种分布方式：
本发明提供一种背光模组，包括用于将所述光源108发出的光线转换成设计所需方向的面光源108的导光板105、用于将光线反射到需要的面上的反射片106、为液晶面板107提供背光的光源108、用于固定所述导光板105的胶框及贴附于所述胶框表面的口字胶；以及凸块部，包括第一凸块组103与第二凸块组104，所述第一凸块组103与第二凸块组104分别突出设置于所述胶框202两侧；所述第一凸块组103与第二凸块组104的上表面均与所述胶框上表面平齐；所述第一凸块组103与第二凸块组104的凸块横向间隔分布。
所述胶框设置为铁塑一体，包括一铁框102，其中所述铁框102底部分别向位于所述光源的一侧，及与所述光源108相对的一侧延伸并在端部设置有折弯结构110，所述折弯结构110突出所述铁框102侧部形成一腔体，每个腔体对应注塑填充一凸块；所述凸块的上表面与所述铁框102上表面平齐，作为所述铁框102上表面的延伸面。
例如，如图4所示，位于所述铁框202两侧的所述第一凸块组203中的凸块与第二凸块组204中的凸块以所述铁框202的纵向轴线为中心相对称设置，并且，所述第一凸块组203与第二凸块组204中相邻凸块间的间距相同；例如，所述第一凸块组203与第二凸块组204所包含的凸块数量相同，并且，位于所述铁框202左右两侧的任意相对的两个凸块的连接线平行于其他组相对凸块的连接线。
采用图4所示方案，所述铁框202两侧的凸块相对称设置，使得所述凸块设置便捷，并且，使所述口字胶两侧在所述铁框202粘贴面上的粘接强度相同，粘贴牢固。
又如，如图5所示，位于所述铁框302两侧的第一凸块组303与第二凸块组304中相邻凸块间的间距相同，并且，所述第一凸块组303与第二凸块组304相交错设置；例如，所述第一凸块组303包括三个凸块，所述第二凸块组304包括两个凸块，所述第二凸块组的凸块位于所述第一凸块组303的两个凸块之间空隙的铁框302对侧，相当于所述铁框302上的每一部分横向面均设置有粘贴面，以实现所述口字胶在所述铁框302表面的粘贴点更加稠密，进而使所述口字胶整体粘贴于所述铁框302表面的粘贴力分布均匀，粘贴牢固。
采用图5所示方案，所述铁框302两侧的凸块依次交错设置，使所述口字胶整体粘贴于所述铁框302表面的粘贴力分布均匀，从而使所述口字胶粘贴牢固。
又如，如图6所示，位于所述铁框402两侧的第一凸块组403与第二凸块组404，所述第一凸块组403与第二凸块组404相对称设置，并且，所述第一凸块组403与第二凸块组404的相邻凸块为非等距间隔分布。
例如，所述第一凸块组403包括五个凸块，其中四个凸块以两个一组分别设置于所述铁框402侧部的两端，其中，一组中的两个凸块间距小于等距分布时的凸块间距，剩余一个凸块设置于所述铁框402中间部位，将粘贴重心转移至所述铁框402的两端，从而在不改变粘贴力度的情况下节省了材料；所述第二凸块组404与第一凸块组403的排列方式以所述铁框的402纵向轴线为中心相对称，此处不再赘述。
又如，所述第一凸块组403包括五个凸块，先将其中一个凸块设置于所述铁框402侧面的中间部位，其余四个凸块分别对称地设置于一个凸块的两侧且分布至所述铁框402的端部，并且，位于中间的凸块至两端的凸块，相邻凸块间距递减，将粘贴重心转移至所述铁框402的靠近端部的位置，使所述口字胶与所述铁框402的粘接力更强；所述第二凸块组404与第一凸块组403的排列方式相对称，此处不再赘述。
在实际组装过程中发现，所述口字胶贴附于所述铁框402端部位置的部分相对较容易起边，进一步会沿该边向所述口字胶内部延伸放大，进而会影响产品使用，因此，在所述铁框402端部的粘贴力度相较于所述铁框402中间部位要更大，以解决上述问题。
本发明还提供一种液晶显示器，所述液晶显示器包括位于下部的背光模组和位于上部的液晶模组，位于下部的背光模组为位于上部的液晶模组提供背光；所述液晶模组包括依次层叠设置的下偏振片、液晶层及上偏振片；所述窄边框背光模组包括：胶框，包括位于底部的铁框以及设置在铁框上的塑胶件，用于固定所述导光板；其中所述铁框底部分别向位于所述光源的一侧，及与所述光源相对的一侧延伸并在端部设置有折弯结构；口字胶，粘合于所述胶框表面；以及凸块部，通过在所述胶框的折弯结构中填充塑胶形成；所述凸块部的上表面与所述胶框上表面平齐。
优选的，所述凸块部包括第一凸块组与第二凸块组，所述第一凸块组与第二凸块组分别设置于所述胶框两侧。
优选的，所述第一凸块组与第二凸块组的凸块横向间隔分布。
优选的，所述第一凸块组中的凸块与第二凸块组中的凸块以所述胶框的纵向轴线为中心相对称设置。
优选的，所述第一凸块组与第二凸块组的凸块交错设置。
优选的，相邻凸块间的间距设置相同。
优选的，相邻凸块间的间距设置不同。
根优选的，靠近所述胶框两端的凸块间距小于靠近所述胶框中部的凸块的间距。
优选的，所述胶框一侧边框宽度为0.2～0.3mm。
优选的，所述口字胶的边框粘贴于所述胶框顶部，并且，所述口字胶的边框一边延伸至所述凸块部边缘，相对另一边超出所述胶框内侧0.1～0.2mm。
优选的，所述口字胶边框宽度为0.45～0.55mm。
本发明所提供的液晶显示器的具体结构与上述窄边框背光模组的优选实施例相同或相似，具体请参见上述背光模组的优选实施例中的相关描述。
本发明所提供的窄边框背光模组及具有所述窄边框背光模组的液晶显示器，把胶框设计成铁塑一体，并且使若干塑胶部分凸出胶框边缘形成锯齿以增加口字胶的贴合面积，从而解决了胶框两侧边宽度不足而难以加工以及由于胶框两侧边宽度较窄而难以组装的问题，进一步实现了同等大小的液晶显示器具有更宽的显示屏。
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. 一种窄边框背光模组，其包括：
    光源，为液晶面板提供背光；
    反射片，用于将光线反射到需要的面上；
    导光板，用于将所述光源发出的光线转换成设计所需方向的面光源；
    胶框，包括位于底部的铁框以及设置在铁框上的塑胶件，用于固定所述导光板；其中所述铁框底部分别向位于所述光源的一侧，及与所述光源相对的一侧延伸并在端部设置有折弯结构；
    口字胶，粘合于所述胶框表面；以及
    凸块部，通过在所述胶框的折弯结构中填充塑胶形成；所述凸块部的上表面与所述胶框上表面平齐；所述凸块部中的凸块宽度为0.1～0.15mm；
    其中所述凸块部包括第一凸块组与第二凸块组，所述第一凸块组与第二凸块组分别设置于所述胶框两侧。
  2. 根据权利要求1所述的窄边框背光模组，其中所述第一凸块组与第二凸块组中的凸块横向间隔分布。
  3. 根据权利要求1所述的窄边框背光模组，其中所述第一凸块组中的凸块与第二凸块组中的凸块以所述胶框的纵向轴线为中心相对称设置。
  4. 根据权利要求1所述的窄边框背光模组，其中所述第一凸块组中的凸块与第二凸块组中的凸块以所述胶框的横向轴线为中心相对称设置。
  5. 根据权利要求2所述的窄边框背光模组，其中相邻凸块间的间距设置相同。
  6. 根据权利要求2所述的窄边框背光模组，其中相邻凸块间的间距设置不同。
  7. 根据权利要求6所述的窄边框背光模组，其中靠近所述胶框两端的凸块间距小于靠近所述胶框中部的凸块的间距。
  8. 根据权利要求1所述的窄边框背光模组，其中所述胶框一侧边框宽度为0.2～0.3mm。
  9. 根据权利要求1所述的窄边框背光模组，其中所述口字胶的边框粘贴于所述胶框顶部，并且，所述口字胶的边框一边延伸至所述凸块部边缘，相对另一边超出所述胶框内侧0.1～0.2mm。
  10. 根据权利要求1所述的窄边框背光模组，其中所述口字胶边框宽度为0.45～0.55mm。
  11. 一种窄边框背光模组，其包括：
    光源，为液晶面板提供背光；
    反射片，用于将光线反射到需要的面上；
    导光板，用于将所述光源发出的光线转换成设计所需方向的面光源；
    胶框，包括位于底部的铁框以及设置在铁框上的塑胶件，用于固定所述导光板；其中所述铁框底部分别向位于所述光源的一侧，及与所述光源相对的一侧延伸并在端部设置有折弯结构；
    口字胶，粘合于所述胶框表面；以及
    凸块部，通过在所述胶框的折弯结构中填充塑胶形成；所述凸块部的上表面与所述胶框上表面平齐。
  12. 根据权利要求11所述的窄边框背光模组，其中所述凸块部包括第一凸块组与第二凸块组，所述第一凸块组与第二凸块组分别设置于所述胶框两侧。
  13. 根据权利要求12所述的窄边框背光模组，其中所述第一凸块组与第二凸块组中的凸块横向间隔分布。
  14. 根据权利要求12所述的窄边框背光模组，其中所述第一凸块组中的凸块与第二凸块组中的凸块以所述胶框的纵向轴线为中心相对称设置。
  15. 根据权利要求13所述的窄边框背光模组，其中相邻凸块间的间距设置相同。
  16. 根据权利要求11所述的窄边框背光模组，其中所述胶框一侧边框宽度为0.2～0.3mm。
  17. 根据权利要求11所述的窄边框背光模组，其中所述口字胶的边框粘贴于所述胶框顶部，并且，所述口字胶的边框一边延伸至所述凸块部边缘，相对另一边超出所述胶框内侧0.1～0.2mm。
  18. 根据权利要求11所述的窄边框背光模组，其中所述口字胶边框宽度为0.45～0.55mm。
  19. 一种液晶显示器，其包括窄边框背光模组、及固定于所述窄边框背光模组上的液晶面板；所述窄边框背光模组包括：
    光源，为液晶面板提供背光；
    反射片，用于将光线反射到需要的面上；
    导光板，用于将所述光源发出的光线转换成设计所需方向的面光源；
    胶框，包括位于底部的铁框以及设置在铁框上的塑胶件，用于固定所述导光板；其中所述铁框底部分别向位于所述光源的一侧，及与所述光源相对的一侧延伸并在端部设置有折弯结构；
    口字胶，粘合于所述胶框表面；以及
    凸块部，通过在所述胶框的折弯结构中填充塑胶形成；所述凸块部的上表面与所述胶框上表面平齐。
  20. 根据权利要求19所述的液晶显示器，其中所述凸块部包括第一凸块组与第二凸块组，所述第一凸块组与第二凸块组分别设置于所述胶框两侧。
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