WO2017185427A1 - 口字胶、口字胶的制作方法及背光模组的制作方法 - Google Patents

口字胶、口字胶的制作方法及背光模组的制作方法 Download PDF

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Publication number
WO2017185427A1
WO2017185427A1 PCT/CN2016/082271 CN2016082271W WO2017185427A1 WO 2017185427 A1 WO2017185427 A1 WO 2017185427A1 CN 2016082271 W CN2016082271 W CN 2016082271W WO 2017185427 A1 WO2017185427 A1 WO 2017185427A1
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WIPO (PCT)
Prior art keywords
glue
line
mouth
protective film
shaped
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2016/082271
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English (en)
French (fr)
Inventor
郭伟
郭庆
徐鹏博
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan China Star Optoelectronics Technology Co Ltd
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Wuhan China Star Optoelectronics Technology Co Ltd
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Application filed by Wuhan China Star Optoelectronics Technology Co Ltd filed Critical Wuhan China Star Optoelectronics Technology Co Ltd
Priority to US15/115,685 priority Critical patent/US10209436B2/en
Publication of WO2017185427A1 publication Critical patent/WO2017185427A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • 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
    • G02B6/0093—Means for protecting the light guide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/0076—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised in that the layers are not bonded on the totality of their surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J5/00—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
    • C09J5/02—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers involving pretreatment of the surfaces to be joined
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/10—Adhesives in the form of films or foils without carriers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/22—Plastics; Metallised plastics
    • C09J7/25—Plastics; Metallised plastics based on macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
    • C09J7/255—Polyesters
    • 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
    • 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
    • G02F1/1303—Apparatus specially adapted to the manufacture of LCDs
    • 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
    • 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
    • G02F1/1339—Gaskets; Spacers; Sealing of cells
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2551/00—Optical elements
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
    • C09J2203/318—Applications of adhesives in processes or use of adhesives in the form of films or foils for the production of liquid crystal displays
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
    • C09J2203/326—Applications of adhesives in processes or use of adhesives in the form of films or foils for bonding electronic components such as wafers, chips or semiconductors
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
    • C09J2301/18—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet characterized by perforations in the adhesive tape
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/20—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive itself
    • C09J2301/204—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive itself the adhesive coating being discontinuous
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2467/00—Presence of polyester
    • C09J2467/006—Presence of polyester in the substrate
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
    • C09J7/38—Pressure-sensitive adhesives [PSA]
    • 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
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    • 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
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    • 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
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    • G02F1/133314—Back frames

Definitions

  • the invention relates to the field of liquid crystal display, in particular to a method for manufacturing a mouth-shaped glue and a mouth-shaped glue and a method for manufacturing the backlight module.
  • LCD Liquid crystal display
  • PDAs personal digital assistants
  • digital cameras computer screens or laptop screens, etc.
  • the advantages of the narrow-framed mobile phone screen are obvious.
  • One is to increase the screen ratio, so that the extra area of the mobile phone is reduced, and the operation feeling of the smart phone touch screen is increased;
  • the second is to reduce the volume of the body, and the lateral width of the narrow-framed mobile phone is higher than that of the ordinary one.
  • the horizontal width of the border phone is narrower;
  • the third is to improve the visual effect, so that the user can watch the screen of the mobile phone better.
  • the narrow frame of the mobile phone screen should also narrow the frame of the backlight module, and the two are matched with a liquid crystal display module (LCM) that realizes a narrow frame; as shown in FIG.
  • the structure of the existing LCM mainly includes a backlight module 100, and a liquid crystal panel 300 mounted on the backlight module 100.
  • the backlight module 100 specifically includes an LED lamp, a plastic frame 110, a mouth glue 120, and a light guide plate 130.
  • the light-increasing film, the astigmatism film, and the like are illuminated by the LED lamp, dispersed by the light guide plate 130, and then condensed by the layers of the film, so that the surface of the entire backlight module 100 is uniformly illuminated; the plastic frame 110 is located at the light guide plate 130.
  • the backlight module 100 adopts a structure in which the plastic frame 110 and the surface adhesive 120 are matched to fix the upper liquid crystal panel 300.
  • the main way to realize the narrow bezel design is to reduce the width of the bezel by reducing the width of the plastic frame 110 and the collimal glue 120.
  • the lipoic glue is difficult to be narrowed, and the glue is leaked during the process of narrowing, the scrap will be stuck, resulting in the tape being unable to be separated from the waste, and the yield is lowered. Therefore, the narrow frame process of the backlight module is mainly limited. On the word glue.
  • the object of the present invention is to provide a mouth-shaped glue which adopts a riding stitch design and can realize a narrow frame of a mouth-shaped glue.
  • Another object of the present invention is to provide a method for manufacturing a mouth-shaped glue, which can be cut and assembled by means of a stitching line to realize a narrow border of the mouth-shaped glue.
  • the present invention provides a mouth-shaped glue, comprising a glue body, and a first protective film and a second protective film respectively located on two sides of the glue body, wherein the glue body is frame-shaped and has an inner side Rectangular plastic inner frame line, rectangular outer rectangular shape of the outer frame line, the corresponding material on the rubber body and the first protective film, the inner frame line and the mouth glue reserved outer frame There are rectangular riding lines between the lines.
  • the riding line is formed by forming a plurality of spaced gaps on the rubber body and the first protective film, and the four corners of the riding line are cut L-shaped slits.
  • the length of each slit on the riding line is greater than the length between adjacent slits.
  • the first protective film and the second protective film are PET films.
  • the invention also provides a method for manufacturing a mouth-shaped glue, comprising the following steps:
  • Step 1 Providing a colloidal film material, wherein the colloidal film material comprises an opposite first surface and a second surface, such that a first surface of the colloidal film material faces upward, and a rectangular inner frame line is disposed on the colloidal film material. Cutting along the inner frame line, removing the material in the inner frame line to form a cross-line inner frame line, and then coating a PET film on the first surface of the colloidal film to form a first protective film ;
  • Step 2 the colloidal film is turned over, so that the second surface of the colloidal film is facing upward, and a rectangular outer frame line is arranged around the inner frame line of the mouth-shaped glue, and the colloid is along the outer frame line.
  • Step 3 a rectangular outer frame line is disposed on the periphery of the riding line, and the colloidal film and the first protective film are cut along the reserved outer frame line, and the outer frame is reserved. The material outside the line is removed, and the outer frame line is formed to form a mouth-shaped glue, and a PET film is attached on the second surface of the colloidal film to form a second protective film to obtain a mouth-shaped glue;
  • the word-of-mouth glue comprises a glue body and a first protective film and a second protective film respectively located on two sides of the glue body, wherein the glue body is a frame type, and has a mouth-shaped glue inner frame line located at the inner side An outer frame line is reserved for the outer mouth glue, and a seam line is arranged between the inner body line of the corresponding body of the glue body and the first protective film and the outer frame line of the mouth glue.
  • a plurality of intervals of slits are cut along the outer frame line on the colloidal film and the first protective film by using a knife-cutting method to form a riding line.
  • the length of each slit on the riding line is greater than the length between adjacent slits.
  • the four corner positions of the saddle stitch formed in the step 2 are cut L-shaped slits.
  • the invention also provides a method for manufacturing a backlight module, comprising the following steps:
  • Step 10 Providing a word-of-mouth glue, comprising: a glue body, a first protective film and a second protective film respectively located on two sides of the glue body, wherein the glue body is frame-shaped and has a rectangular mouth-shaped glue located inside a frame line, a rectangle-shaped rectangular glue on the outer side, and a frame line are reserved, and a rectangular shape is arranged between the inner body of the glue body and the first protective film and the outer frame line of the mouth-shaped glue. Riding stitches;
  • Step 20 providing a light guide plate and a plastic frame, the plastic frame is located on the outer periphery of the light guide plate, and after removing the second protective film on the sealant, attaching the side of the exposed adhesive body to the plastic frame ;
  • Step 30 Providing a pressure fixture, the pressure fixture includes an upper fixture and a lower fixture, and the upper and lower edges of the plastic frame and the light guide plate are pressed from above and below by using the upper fixture and the lower fixture respectively, and the glue is glued.
  • the material on the material body and the first protective film on the periphery of the riding line is torn along the riding line, the pressing jig is removed, and the first protective film remaining on the glue body is torn off to obtain a backlight module.
  • the step 30 further includes: before the upper and lower fixtures press the plastic frame and the light guide plate, a sponge is disposed on the lower sides of the plastic frame and the light guide plate to force the plastic frame and the light guide plate. Evenly.
  • the invention has the beneficial effects that the mouth-shaped glue of the invention adopts the riding stitch design, and when assembling, the excess material outside the riding stitch is torn along the riding stitch line, thereby obtaining the narrow-faced mouth-shaped glue, thereby making the mouth
  • the word glue does not have problems such as overflowing glue and adhesion waste, and is easy to be separated from the waste, thereby effectively reducing the defect rate.
  • the method for manufacturing the word-of-mouth glue of the invention firstly cuts the inner frame line of the export word glue on the colloidal film material, and then forms an intermittent riding line at a place where the outer surface line of the mouth-shaped glue is formed, and finally cuts the periphery of the riding line.
  • a circle of mouth glue is reserved for the outer frame line, and the obtained mouth glue can effectively realize the narrow border of the mouth glue, thereby realizing the narrow frame of the backlight module, and the yield is high.
  • the narrow border of the backlight module can be effectively realized by using the above-mentioned mouth-shaped glue.
  • FIG. 1 is a schematic structural view of a conventional LCM
  • FIG. 2 is a schematic cross-sectional structural view of a mouth-shaped glue of the present invention
  • FIG. 3 is a flow chart of a method for fabricating a mouth-shaped glue of the present invention.
  • FIG. 4 is a schematic view showing the first step of the method for producing a mouth-shaped glue according to the present invention
  • Figure 5 is a schematic view showing the second step of the method for producing a mouth-shaped glue according to the present invention.
  • FIG. 6 is a schematic view showing the step 3 of the method for producing a mouth-shaped glue of the present invention and a top view of the structure of the mouth-shaped glue of the present invention
  • FIG. 7 is a flow chart of a method for fabricating a backlight module of the present invention.
  • step 20 is a schematic diagram of step 20 of a method for fabricating a backlight module of the present invention.
  • FIG. 9 is a schematic diagram of step 30 of the method for fabricating a backlight module of the present invention.
  • the present invention provides a mouth-shaped glue, comprising a glue body 1 ′, a first protective film 14 and a second protective film 15 respectively located on both sides of the glue body 1 ′, the glue
  • the material body 1 ′ is of a frame type, and has a rectangular inner-shaped rubber inner frame line 11 on the inner side and a rectangular outer-shaped rectangular outer-shaped outer frame line 13 on the outer side, the rubber body 1 ′ and the first protective film 14 .
  • a rectangular riding line 12 is disposed between the corresponding mouth-shaped glue inner frame line 11 and the mouth-shaped glue reserved outer frame line 13.
  • the word-shaped glue of the present invention is used for assembling on a backlight module to realize a narrow frame of the lip-shaped glue, thereby implementing a narrow frame of the backlight module.
  • the protective film 15 is attached to the plastic frame 32 of the backlight module, and then the material on the periphery of the sacrificial line 12 on the rubber body 1' and the first protective film 14 is peeled off along the sacrificial line 12, so that The mouth-shaped glue is easy to be separated from the waste material, and the mouth-shaped glue does not have problems such as overflowing glue and sticking waste in the case of achieving a narrow side, thereby realizing a narrow frame of the backlight module.
  • the riding line 12 is formed by forming a plurality of spaced gaps on the rubber body 1' and the first protective film 14, and the four corners of the riding line 12 are cut L-shaped slits, thereby facilitating Teared off.
  • the riding stitch 12 is used for tearing off the subsequent scrap, and the ease of tearing can be adjusted by the length of the slit on the riding stitch 12 and the length of the gap between the two slits. Obviously, the longer the slit, the two slits The shorter the interval, the easier it is to tear off. Therefore, preferably, the length of each slit on the riding line 12 is greater than the length between adjacent slits.
  • the first protective film 14 and the second protective film 15 are PET films.
  • the present invention further provides a method for manufacturing a mouth-shaped glue, comprising the following steps:
  • Step 1 as shown in FIG. 4, a colloidal film 1 is provided, the colloidal film 1 includes an opposite first surface and a second surface, such that the first surface of the colloidal film 1 faces upward, in the colloidal film 1 is provided with a rectangular inner frame line, and is cut along the inner frame line by using a die, and the material in the inner frame line is removed to form a mouth-shaped glue inner frame line 11, and then in the colloidal film 1 A PET film is applied to one surface to form a first protective film 14.
  • Step 2 as shown in FIG. 5, the colloidal film 1 is turned over, so that the second surface of the colloidal film 1 faces upward, and a rectangular outer frame line is arranged around the inner frame line 11 of the mouth-shaped glue.
  • the outer frame line cuts a loop of the stitching line 12 on the colloidal film 1 and the first protective film 14.
  • a slit of a plurality of intervals is cut along the outer frame line on the colloidal film 1 and the first protective film 14 by using a segmented cutter. Thereby the seam line 12 is formed.
  • the four corner positions of the sacrificial line 12 formed in the step 2 are cut L-shaped slits, thereby facilitating subsequent tearing at the corners.
  • the riding stitch 12 is used for tearing off the subsequent scrap, and the ease of tearing can be adjusted by the length of the slit on the riding stitch 12 and the length of the gap between the two slits. Obviously, the longer the slit, the two slits The shorter the interval, the easier it is to tear off. Therefore, preferably, the length of each slit on the riding line 12 is greater than the length between adjacent slits.
  • Step 3 as shown in FIG. 6, a rectangular outer frame line is disposed on the periphery of the saddle line 12, and the colloidal film 1 and the first protection are used along the reserved outer frame line by using a die.
  • the film 14 is cut, the material outside the outer frame line is removed, and the outer frame line 13 is formed, and a PET film is attached on the second surface of the colloidal film 1 to form a second protection.
  • the word-of-mouth glue comprises a glue body 1', and a first protective film 14 and a second protective film 15 respectively located on both sides of the glue body 1'.
  • the glue body 1' is frame-shaped and has an inner side.
  • the inner frame line 11 of the mouthpiece and the outer frame line 13 are located on the outer side, and the inner body line 11 of the glue body 1' and the first protective film 14 is reserved for the inner frame line 11 and the mouth glue.
  • a seam line 12 is provided between the frame lines 13.
  • the word-of-mouth glue obtained in the step 3 is convenient for storage and transportation, and can be temporarily stored or shipped for assembly.
  • the riding stitch 12 and the mouth-shaped glue are reserved for the outer frame.
  • the distance between the lines 13 is B.
  • B value is designed to be large enough, the precision requirement of the outer frame line 13 for the seal of the mouth glue is lowered.
  • the cutters of the wood board and the mold of the rubber sheet can satisfy the process. Conditions and prices are relatively low.
  • the second protective film 15 on the lip glue is first peeled off, and then the glue body 1' is attached to the backlight module.
  • the material on the periphery of the sacrificial line 12 on the rubber body 1' and the first protective film 14 is then peeled off along the riding line 12, so that the mouth-shaped glue is easily separated from the waste material.
  • the present invention further provides a method for fabricating a backlight module, comprising the following steps:
  • Step 10 Providing a word-of-mouth glue, comprising a glue body 1', a first protective film 14 and a second protective film 15 respectively located on two sides of the glue body, the glue body 1' being frame-shaped and having an inner side a rectangle-shaped inner metal frame line 11 and a rectangular-shaped square-shaped glue on the outer side are reserved for the outer frame line 13.
  • the rubber body 1' and the first protective film 14 correspond to the inner-character rubber inner frame line 11 and the mouth word.
  • a rectangular riding line 12 is provided between the glue reserved outer frame lines 13.
  • Step 20 as shown in FIG. 8, a light guide plate 31 and a plastic frame 32 are provided.
  • the plastic frame 32 is located on the outer periphery of the light guide plate 31. After the second protective film 15 on the sealant is removed, the glue material is exposed.
  • One side of the body 1 ′ is attached to the plastic frame 32 and covers a gap between the light guide plate 31 and the plastic frame 32 to extend to cover the peripheral edge of the light guide plate 31 .
  • a pressure fixture is provided.
  • the pressure fixture includes an upper fixture 51 and a lower fixture 52.
  • a sponge 60 is disposed on the upper and lower sides of the light guide plate 31 and the plastic frame 32.
  • the upper jig 51 and the lower jig 52 respectively press the light guide plate 31 and the peripheral edge of the plastic frame 32 from above and below, and the sponge 60 is located between the upper jig 51 and the plastic frame 32, the lower jig 52 and the light guide plate.
  • the material on the periphery of the sacrificial line 12 on the rubber body 1' and the first protective film 14 is torn along the riding line 12, and the removal is performed. Pressing the jig and tearing off the remaining first protective film 14 on the glue body 1' to obtain a backlight module.
  • step 30 due to the presence of the riding stitch 12, the formed lip glue is not easy to adhere to the waste material, and the glue is generated.
  • the glue body of the mouth glue is first used. 1' is attached to the plastic frame 32. At this time, the pre-formed lip glue is pasted on the plastic frame 32, and the material on the periphery of the sewing thread 12 on the rubber body 1' and the first protective film 14 is along.
  • the sewing thread 12 is torn off, the mouth-shaped rubber waste is easily separated from the mouth-shaped glue and the plastic frame 32, and the problem of overflowing the glue is not caused, and the defect rate is effectively reduced.
  • the mouth-shaped glue of the present invention adopts a riding stitch design, and when assembled on the backlight module, the excess material outside the riding stitch is torn along the riding stitch to obtain a narrow-faced mouth-shaped glue, thereby In the case where the narrow-sided edge is realized, there is no problem such as overflowing glue or adhesion waste, and it is easy to be separated from the waste, thereby effectively reducing the defective rate.
  • the method for manufacturing the word-of-mouth glue of the invention firstly cuts the inner frame line of the export word glue on the colloidal film material, and then forms an intermittent riding line at a place where the outer surface line of the mouth-shaped glue is formed, and finally cuts the periphery of the riding line.
  • a circle of mouth glue is reserved for the outer frame line, and the obtained mouth glue can effectively realize the narrow border of the mouth glue, thereby realizing the narrow frame of the backlight module, and the yield is high.
  • the narrow border of the backlight module can be effectively realized by using the above-mentioned mouth-shaped glue.

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Abstract

一种口字胶、口字胶的制作方法及背光模组的制作方法。该口字胶，采用骑缝线设计，组装时，将骑缝线外多余的材料沿骑缝线撕除，即可得到窄边框的口字胶，从而使口字胶在实现窄边情况下不存在溢胶、粘连废料等问题，容易与废料脱离，有效降低了不良率。该口字胶的制作方法，首先在胶体膜材（1）上剪裁出口字胶内框线（11），然后在预形成口字胶外框线的地方形成断断续续的骑缝线（12），最后在骑缝线（12）外围剪裁出一圈口字胶预留外框线（13），所得到的口字胶能够有效实现口字胶的窄边框，进而实现背光模组的窄边框，且良率高。

Description

口字胶、口字胶的制作方法及背光模组的制作方法 技术领域
本发明涉及液晶显示领域，尤其涉及一种口字胶、口字胶的制作方法及背光模组的制作方法。
背景技术
液晶显示装置(Liquid Crystal Display，LCD)具有机身薄、省电、无辐射等众多优点，得到了广泛的应用。如：液晶电视、移动电话、个人数字助理(PDA)、数字相机、计算机屏幕或笔记本电脑屏幕等，在平板显示领域中占主导地位。
随着智能手机的快速发展，人们与智能手机之间的关系越来越密切，用户对于智能手机的要求也越来越高，高清高亮、美观大方的智能手机受到用户的大力追捧；从最初的宽边框小屏幕手机发展到现在的窄边框大屏幕手机，窄边框的手机屏幕已成为手机发展的主要趋势。
窄边框的手机屏幕优势十分明显，一是提高屏占比，让手机的额外区域面积减少，增加智能手机触摸屏的操作感；二是减少机身体积，窄边框的手机的横向宽度要比普通的边框的手机的横向宽度更窄；三是提高视觉效果，让用户观看手机屏幕的效果更佳。
窄边框的手机屏幕除了要将LCD边框做窄之外，还要将背光模组的边框做窄，两者搭配实现窄边框的液晶显示模组(Liquid Crystal Module，LCM)；如图1所示，现有LCM的结构主要包括背光模块100，安装在所述背光模块100上方的液晶面板300，其中，所述背光模块100具体包括LED灯、胶框110、口字胶120、导光板130、增光膜和散光膜等，工作时，由所述LED灯发光，经导光板130打散，再通过各层膜片的聚光，使得整个背光模块100表面均匀发光；胶框110位于导光板130的外周，所述背光模块100采用胶框110和口字胶120配合的结构来其固定上方的液晶面板300。目前实现窄边框设计的主要方式是通过减小胶框110和口字胶120宽度的方式以减小边框宽度。但由于口字胶很难裁窄，且裁窄的过程中会出现溢胶的情况，会粘连废料，导致胶带无法与废料脱离，降低的良率，因此目前背光模组的窄边框工艺主要局限在口字胶上。
发明内容
本发明的目的在于提供一种口字胶，采用骑缝线设计，能够实现口字胶的窄边框。
本发明的目的还在于提供一种口字胶的制作方法，通过骑缝线的方式对口字胶进行裁切并组装，能够实现口字胶的窄边框。
本发明的目的还在于提供一种背光模组的制作方法，将窄边框的口字胶贴设于背光模组的胶框上，进而实现背光模组的窄边框。
为实现上述目的，本发明提供一种口字胶，包括胶材本体、及分别位于胶材本体两侧的第一保护膜与第二保护膜，所述胶材本体为框型，具有位于内侧的矩形的口字胶内框线、位于外侧的矩形的口字胶预留外框线，所述胶材本体和第一保护膜上对应口字胶内框线与口字胶预留外框线之间设有矩形的骑缝线。
所述骑缝线通过在胶材本体及第一保护膜上形成多段间隔的缝隙所形成，所述骑缝线的四角位置处为裁断的L型缝隙。
所述骑缝线上每段缝隙的长度大于相邻两缝隙之间的长度。
所述第一保护膜与第二保护膜为PET膜。
本发明还提供一种口字胶的制作方法，包括如下步骤：
步骤1、提供胶体膜材，所述胶体膜材包括相对的第一表面、第二表面，使胶体膜材的第一表面朝上，在所述胶体膜材上设置一圈矩形的内框线，沿所述内框线进行裁切，将内框线内的材料去除，形成口字胶内框线，然后在胶体膜材的第一表面上贴覆一层PET膜，形成第一保护膜；
步骤2、将胶体膜材进行翻转，使胶体膜材的第二表面朝上，在所述口字胶内框线外围设置一圈矩形的外框线，沿所述外框线在所述胶体膜材及第一保护膜上裁切出一圈骑缝线；
步骤3、在所述骑缝线外围设置一圈矩形的预留外框线，沿所述预留外框线在所述胶体膜材及第一保护膜上进行裁切，将预留外框线外的材料去除，形成口字胶预留外框线，在胶体膜材的第二表面上贴覆一层PET膜，形成第二保护膜，得到口字胶；
所述口字胶包括胶材本体、及分别位于胶材本体两侧的第一保护膜与第二保护膜，所述胶材本体为框型，具有位于内侧的口字胶内框线、位于外侧的口字胶预留外框线，所述胶材本体和第一保护膜上对应口字胶内框线与口字胶预留外框线之间设有骑缝线。
所述步骤2中，使用刀模采用分段式出刀的方式在所述胶体膜材及第一保护膜上沿所述外框线裁切出一圈多段间隔的缝隙，从而形成骑缝线。
所述骑缝线上每段缝隙的长度大于相邻两缝隙之间的长度。
所述步骤2中形成的骑缝线的四角位置处为裁断的L型缝隙。
本发明还提供一种背光模组的制作方法，包括如下步骤：
步骤10、提供一口字胶，包括胶材本体、分别位于胶材本体两侧的第一保护膜与第二保护膜，所述胶材本体为框型，具有位于内侧的矩形的口字胶内框线、位于外侧的矩形的口字胶预留外框线，所述胶材本体和第一保护膜上对应口字胶内框线与口字胶预留外框线之间设有矩形的骑缝线；
步骤20、提供导光板及胶框，所述胶框位于所述导光板的外周，撕去口字胶上的第二保护膜后，将露出胶材本体的一侧贴于所述胶框上；
步骤30、提供加压治具，所述加压治具包括上治具和下治具，使用上治具和下治具分别从上方和下方压住胶框及导光板的四周边缘，将胶材本体和第一保护膜上在骑缝线外围的材料沿着骑缝线撕离，撤去加压治具，撕去胶材本体上剩余的第一保护膜，得到背光模组。
所述步骤30还包括，在所述上治具和下治具压住胶框及导光板之前，在胶框及导光板上下两侧设置一层海绵，以使胶框及导光板的受力均匀。
本发明的有益效果：本发明的口字胶，采用骑缝线设计，组装时，将骑缝线外多余的材料沿骑缝线撕除，即可得到窄边框的口字胶，从而使口字胶在实现窄边情况下不存在溢胶、粘连废料等问题，容易与废料脱离，有效降低了不良率。本发明的口字胶的制作方法，首先在胶体膜材上剪裁出口字胶内框线，然后在预形成口字胶外框线的地方形成断断续续的骑缝线，最后在骑缝线外围剪裁出一圈口字胶预留外框线，所得到的口字胶能够有效实现口字胶的窄边框，进而实现背光模组的窄边框，且良率高。本发明的背光模组的制作方法，使用上述的口字胶，能够有效实现背光模组的窄边框。
附图说明
为了能更进一步了解本发明的特征以及技术内容，请参阅以下有关本发明的详细说明与附图，然而附图仅提供参考与说明用，并非用来对本发明加以限制。
附图中，
图1为现有一LCM的结构示意图；
图2为本发明的口字胶的剖面结构示意图；
图3为本发明的口字胶的制作方法的流程图；
图4为本发明的口字胶的制作方法步骤1的示意图；
图5为本发明的口字胶的制作方法步骤2的示意图；
图6为本发明的口字胶的制作方法步骤3的示意图暨本发明的口字胶的结构俯视图；
图7为本发明的背光模组的制作方法的流程图；
图8为本发明的背光模组的制作方法步骤20的示意图；
图9为本发明的背光模组的制作方法步骤30的示意图。
具体实施方式
为更进一步阐述本发明所采取的技术手段及其效果，以下结合本发明的优选实施例及其附图进行详细描述。
请参阅图2、及图6，本发明提供一种口字胶，包括胶材本体1’、分别位于胶材本体1’两侧的第一保护膜14与第二保护膜15，所述胶材本体1’为框型，具有位于内侧的矩形的口字胶内框线11、位于外侧的矩形的口字胶预留外框线13，所述胶材本体1’和第一保护膜14上对应口字胶内框线11与口字胶预留外框线13之间设有矩形的骑缝线12。
需要说明的是，本发明的口字胶用于组装在背光模组上，实现口字胶的窄边框、进而实现背光模组的窄边框，组装时，首先撕去口字胶上的第二保护膜15，将其贴设于背光模组的胶框32上，然后将胶材本体1’和第一保护膜14上在骑缝线12外围的材料沿着骑缝线12撕离，使得口字胶容易与废材脱离，口字胶在实现窄边情况下不存在溢胶、粘连废料等问题，进而实现背光模组的窄边框。
具体地，所述骑缝线12通过在胶材本体1’及第一保护膜14上形成多段间隔的缝隙所形成，所述骑缝线12的四角位置处为裁断的L型缝隙，从而方便撕离。
需要说明的是，骑缝线12用于后续废料的撕离，撕离的难易程度可由骑缝线12上的缝隙的长度和两缝隙间隔的长度调整，显然的，缝隙越长、两缝隙间隔越短就越容易撕离，因此，优选地，所述骑缝线12上每段缝隙的长度大于相邻两缝隙之间的长度。
具体地，所述第一保护膜14与第二保护膜15为PET膜。
请参阅图3，本发明还提供一种口字胶的制作方法，包括如下步骤：
步骤1、如图4所示，提供胶体膜材1，所述胶体膜材1包括相对的第一表面、第二表面，使胶体膜材1的第一表面朝上，在所述胶体膜材1上设置一圈矩形的内框线，使用刀模沿所述内框线进行裁切，将内框线内的材料去除，形成口字胶内框线11，然后在胶体膜材1的第一表面上贴覆一层PET膜，形成第一保护膜14。
步骤2、如图5所示，将胶体膜材1进行翻转，使胶体膜材1的第二表面朝上，在所述口字胶内框线11外围设置一圈矩形的外框线，沿所述外框线在所述胶体膜材1及第一保护膜14上裁切出一圈骑缝线12。
具体地，所述步骤2中，使用刀模采用分段式出刀的方式在所述胶体膜材1及第一保护膜14上沿所述外框线裁切出一圈多段间隔的缝隙，从而形成骑缝线12。
具体地，所述步骤2中形成的骑缝线12的四角位置处为裁断的L型缝隙，从而方便后续在拐角处进行撕离。
需要说明的是，骑缝线12用于后续废料的撕离，撕离的难易程度可由骑缝线12上的缝隙的长度和两缝隙间隔的长度调整，显然的，缝隙越长、两缝隙间隔越短就越容易撕离，因此，优选地，所述骑缝线12上每段缝隙的长度大于相邻两缝隙之间的长度。
步骤3、如图6所示，在所述骑缝线12外围设置一圈矩形的预留外框线，使用刀模沿所述预留外框线在所述胶体膜材1及第一保护膜14上进行裁切，将预留外框线外的材料去除，形成口字胶预留外框线13，在胶体膜材1的第二表面上贴覆一层PET膜，形成第二保护膜15，得到口字胶；
所述口字胶包括胶材本体1’、及分别位于胶材本体1’两侧的第一保护膜14与第二保护膜15，所述胶材本体1’为框型，具有位于内侧的口字胶内框线11、位于外侧的口字胶预留外框线13，所述胶材本体1’和第一保护膜14上对应口字胶内框线11与口字胶预留外框线13之间设有骑缝线12。
具体地，所述步骤3得到的口字胶方便存储和输送，可以暂时保存或出货，以待组装。
具体地，由于胶材本体1’上骑缝线12与口字胶预留外框线13之间的部分实为待撕离的废材，设骑缝线12与口字胶预留外框线13之间距离为B，在B值设计足够大的情况下，口字胶预留外框线13的精度要求变低，在剪裁过程中，木板刀模、胶板刀模都可以满足工艺条件且价格较为低廉。
需要说明的是，在将步骤3得到的口字胶在背光模组上进行组装时，首先撕去口字胶上的第二保护膜15后，将胶材本体1’贴设于背光模组的胶框32上，然后将胶材本体1’和第一保护膜14上在骑缝线12外围的材料沿着骑缝线12撕离，使得口字胶容易与废材脱离，口字胶在实现窄边情况下不存在溢胶、粘连废料等问题，进而实现背光模组的窄边框。
基于上述的口字胶，请参阅图7，本发明还提供一种背光模组的制作方法，包括如下步骤：
步骤10、提供一口字胶，包括胶材本体1’、分别位于胶材本体两侧的第一保护膜14与第二保护膜15，所述胶材本体1’为框型，具有位于内侧的矩形的口字胶内框线11、位于外侧的矩形的口字胶预留外框线13，所述胶材本体1’和第一保护膜14上对应口字胶内框线11与口字胶预留外框线13之间设有矩形的骑缝线12。
步骤20、如图8所示，提供导光板31及胶框32，所述胶框32位于所述导光板31的外周，撕去口字胶上的第二保护膜15后，将露出胶材本体1’的一侧贴于所述胶框32上并覆盖所述导光板31与胶框32之间的间隙而延伸覆盖至导光板31的四周边缘。
步骤30、如图9所示，提供加压治具，所述加压治具包括上治具51和下治具52，在导光板31及胶框32上下两侧设置一层海绵60，使用上治具51和下治具52分别从上方和下方压住导光板31及胶框32的四周边缘，此时海绵60位于上治具51与胶框32之间、下治具52与导光板31之间，以使导光板31及胶框32的受力均匀，将胶材本体1’和第一保护膜14上在骑缝线12外围的材料沿着骑缝线12撕离，撤去加压治具，撕去胶材本体1’上剩余的第一保护膜14，得到背光模组。
具体地，步骤30中，由于骑缝线12的存在，所形成的口字胶不容易与废材粘连、产生溢胶等问题；进一步地，本发明中，先将口字胶的胶材本体1’贴设于胶框32上，此时预形成的口字胶已粘贴在胶框32上，再将胶材本体1’和第一保护膜14上在骑缝线12外围的材料沿着骑缝线12撕离，口字胶废料便很容易与口字胶及胶框32分离，且不会出溢胶的问题，有效降低的不良率。
综上所述，本发明的口字胶，采用骑缝线设计，组装在背光模组上时，将骑缝线外多余的材料沿骑缝线撕除，得到窄边框的口字胶，从而使口字胶在实现窄边情况下不存在溢胶、粘连废料等问题，容易与废料脱离，有效降低了不良率。本发明的口字胶的制作方法，首先在胶体膜材上剪裁出口字胶内框线，然后在预形成口字胶外框线的地方形成断断续续的骑缝线，最后在骑缝线外围剪裁出一圈口字胶预留外框线，所得到的口字胶能够有效实现口字胶的窄边框，进而实现背光模组的窄边框，且良率高。本发明的背光模组的制作方法，使用上述的口字胶，能够有效实现背光模组的窄边框。
以上所述，对于本领域的普通技术人员来说，可以根据本发明的技术方案和技术构思作出其他各种相应的改变和变形，而所有这些改变和变形都应属于本发明后附的权利要求的保护范围。

Claims (10)

  1. 一种口字胶，包括胶材本体、分别位于胶材本体两侧的第一保护膜与第二保护膜，所述胶材本体为框型，具有位于内侧的矩形的口字胶内框线、位于外侧的矩形的口字胶预留外框线，所述胶材本体和第一保护膜上对应口字胶内框线与口字胶预留外框线之间设有矩形的骑缝线。
  2. 如权利要求1所述的口字胶，其中，所述骑缝线通过在胶材本体及第一保护膜上形成多段间隔的缝隙所形成，所述骑缝线的四角位置处为裁断的L型缝隙。
  3. 如权利要求2所述的口字胶，其中，所述骑缝线上每段缝隙的长度大于相邻两缝隙之间的长度。
  4. 如权利要求2所述的口字胶，其中，所述第一保护膜与第二保护膜为PET膜。
  5. 一种口字胶的制作方法，包括如下步骤：
    步骤1、提供胶体膜材，所述胶体膜材包括相对的第一表面、第二表面，使胶体膜材的第一表面朝上，在所述胶体膜材上设置一圈矩形的内框线，沿所述内框线进行裁切，将内框线内的材料去除，形成口字胶内框线，然后在胶体膜材的第一表面上贴覆一层PET膜，形成第一保护膜；
    步骤2、将胶体膜材进行翻转，使胶体膜材的第二表面朝上，在所述口字胶内框线外围设置一圈矩形的外框线，沿所述外框线在所述胶体膜材及第一保护膜上裁切出一圈骑缝线；
    步骤3、在所述骑缝线外围设置一圈矩形的预留外框线，沿所述预留外框线在所述胶体膜材及第一保护膜上进行裁切，将预留外框线外的材料去除，形成口字胶预留外框线，在胶体膜材的第二表面上贴覆一层PET膜，形成第二保护膜，得到口字胶；
    所述口字胶包括胶材本体、及分别位于胶材本体两侧的第一保护膜与第二保护膜，所述胶材本体为框型，具有位于内侧的口字胶内框线、位于外侧的口字胶预留外框线，所述胶材本体和第一保护膜上对应口字胶内框线与口字胶预留外框线之间设有骑缝线。
  6. 如权利要求5所述的口字胶的制作方法，其中，所述步骤2中，使用刀模采用分段式出刀的方式在所述胶体膜材及第一保护膜上沿所述外框线裁切出一圈多段间隔的缝隙，从而形成骑缝线。
  7. 如权利要求6所述的口字胶的制作方法，其中，所述步骤2中形成 的骑缝线的四角位置处为裁断的L型缝隙。
  8. 如权利要求6所述的口字胶的制作方法，其中，所述骑缝线上每段缝隙的长度大于相邻两缝隙之间的长度。
  9. 一种背光模组的制作方法，包括如下步骤：
    步骤10、提供一口字胶，所述口字胶包括胶材本体、分别位于胶材本体两侧的第一保护膜与第二保护膜，所述胶材本体为框型，具有位于内侧的矩形的口字胶内框线、位于外侧的矩形的口字胶预留外框线，所述胶材本体和第一保护膜上对应口字胶内框线与口字胶预留外框线之间设有矩形的骑缝线；
    步骤20、提供导光板及胶框，所述胶框位于所述导光板的外周，撕去口字胶上的第二保护膜后，将露出胶材本体的一侧贴于所述胶框上；
    步骤30、提供加压治具，所述加压治具包括上治具和下治具，使用上治具和下治具分别从上方和下方压住胶框及导光板的四周边缘，将胶材本体和第一保护膜上在骑缝线外围的材料沿着骑缝线撕离，撤去加压治具，撕去胶材本体上剩余的第一保护膜，得到背光模组。
  10. 如权利要求9所述的背光模组的制作方法，其中，所述步骤30还包括，在所述上治具和下治具压住胶框及导光板之前，在胶框及导光板上下两侧设置一层海绵，以使胶框及导光板的受力均匀。
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