WO2018014548A1 - 遮光胶带、应用该遮光胶带的显示装置及其制备方法 - Google Patents

遮光胶带、应用该遮光胶带的显示装置及其制备方法 Download PDF

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Publication number
WO2018014548A1
WO2018014548A1 PCT/CN2017/073777 CN2017073777W WO2018014548A1 WO 2018014548 A1 WO2018014548 A1 WO 2018014548A1 CN 2017073777 W CN2017073777 W CN 2017073777W WO 2018014548 A1 WO2018014548 A1 WO 2018014548A1
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WO
WIPO (PCT)
Prior art keywords
release film
light
tape body
tape
shielding tape
Prior art date
Application number
PCT/CN2017/073777
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English (en)
French (fr)
Inventor
王冬
任健
王大威
Original Assignee
京东方科技集团股份有限公司
北京京东方光电科技有限公司
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Application filed by 京东方科技集团股份有限公司, 北京京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US15/551,658 priority Critical patent/US20180157097A1/en
Publication of WO2018014548A1 publication Critical patent/WO2018014548A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133512—Light shielding layers, e.g. black matrix
    • 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
    • G02F1/133308—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
    • G02F1/1303—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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528—Polarisers
    • 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
    • G02B6/0033—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
    • G02B6/0053—Prismatic sheet or layer; Brightness enhancement element, sheet or layer
    • 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
    • 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
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/50—Protective arrangements
    • 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
    • G02F2202/00—Materials and properties
    • G02F2202/28—Adhesive materials or arrangements

Definitions

  • the present invention relates to the field of display technologies, and in particular, to a light shielding tape, a display device using the same, and a method for fabricating the same.
  • a method of providing a light-shielding tape between a back plate of a backlight module and a lower surface edge of the display panel is used to solve the problem of light leakage of the backlight module.
  • the light-shielding tape is often attached to the display panel, which causes defects in the front and back of the backlight module.
  • the cutting line is a closed cutting line that defines a retention portion on the first release film alone.
  • the cutting line is a non-closed cutting line that cooperates with a corresponding side of the first release film to define a retention portion.
  • the at least one cutting line is located on a side of the first release film corresponding to the at least one wide side edge region.
  • the remaining portion is elongated, the width of the remaining portion is between 2 mm and 10 mm, and the length direction of the remaining portion extends in a direction in which the wide side region extends.
  • the first release film further has a tear-off portion, the at least one cutting line being located on a side of the first release film adjacent to the tear-off portion.
  • the tear-off portion is configured to tear the first release film from the tape body upon application of a force and to break the retention portion from the cutting line to remain in On the tape body.
  • the light shielding tape further includes a second release film attached to the second surface of the tape body, the second surface being disposed opposite to the first surface.
  • the second surface of the tape body has an adhesive layer, and the second release film is adhered to the tape body through an adhesive layer of the second surface, wherein the adhesive The layer is a black light absorbing adhesive layer containing a light absorbing additive.
  • the second release film is a PET single-sided release film.
  • a display device comprising:
  • the display panel includes a lower polarizer and an array substrate arranged from the light entering side to the light emitting side; the side of the lower polarizer is located in a side of the array substrate facing the backlight module, and the lower polarized light Forming a step structure between the sheet and the array substrate;
  • the tape body is located on the backlight module, and the remaining portion of the first release film is sandwiched between the tape body and the array substrate, and satisfies:
  • h 2 is the thickness of the lower polarizer; and h 1 is the thickness of the remaining portion of the first release film.
  • FIG. 1 is a schematic view showing the application of a single-sided tape on a light-shielding tape according to an embodiment of the present invention
  • FIG. 2A is a schematic structural view of a light shielding tape according to another embodiment of the present invention.
  • FIG. 3B is a schematic view of the tape body of the light shielding tape shown in FIG. 3A after peeling off the first release film and the second release film;
  • FIG. 4A is a schematic structural view of a light shielding tape according to still another embodiment of the present invention.
  • FIG. 4B is a schematic view of the tape body of the light shielding tape of FIG. 4A after peeling off the first release film and the second release film;
  • 5A is a schematic structural view of a light shielding tape according to still another embodiment of the present invention.
  • FIG. 5B is a schematic view of the tape body of the light shielding tape shown in FIG. 5A after peeling off the first release film and the second release film;
  • 6A is a schematic structural view of a light shielding tape according to still another embodiment of the present invention.
  • FIG. 6B is a schematic view of the tape body of the light shielding tape shown in FIG. 6A after peeling off the first release film and the second release film;
  • an embodiment of the present invention provides a solution of affixing a single-sided tape or PET (Polyethylene terephthalate) to the light-shielding tape 10 at the entrance of the backlight module.
  • PET Polyethylene terephthalate
  • Polyethylene terephthalate film 11 as shown in FIG.
  • the addition of the single-sided adhesive or PET film 11 not only increases the material cost, but also the light-shielding tape 10 and the single-sided adhesive 11 need to be separately assembled in steps, which is inefficient, and indirectly increases the labor cost of the display device.
  • the masking film of the light-shielding tape is subjected to a cutting line treatment at the point where the single-sided tape is required to be attached, and the release film is peeled off when used.
  • the need for the retained portion can be broken from the cutting line, thereby achieving the purpose of saving the cost of the single-sided tape and the time for assembling the single-sided tape.
  • the light shielding tape 100 includes a light-shielding tape body 130 and a first release film 110 and a second release film 120 respectively attached to both sides of the tape body.
  • the tape body 130 is interposed between the first release film 110 and the second release film 120 when not in use. During use, the second release film 120 is peeled off, and the tape body 130 and the first release film 110 are attached to the plastic frame of the backlight module, as shown in FIG. 2B.
  • first release film 110 As shown in FIGS. 2A and 2B, on the first release film 110, two cutting lines 111 and 112 are formed.
  • the cutting edges 111 and 112 and the bottom and sides of the first release film 110 define a first release film retaining portion, as shown by A 2 and B 2 in the figure, and other portions except the reserved portion serve as The tear-off portion of the first release film.
  • the remaining portion A 2 corresponding to the cutting line 111 and the remaining portion B 2 corresponding to the cutting line 112 are broken at the respective cutting lines, thereby being retained on the tape body. 110, as shown in Fig. 2C; and the tear-off portion of the first release film 110 other than the remaining portions A 2 and B 2 is peeled off.
  • the light-shielding tape 100 of the embodiment includes a light-shielding tape body 130 and a first release film 110 and a second release film 120 respectively attached to both sides of the tape body 130 .
  • the second release film 120 under the tape body 130 may be omitted or not disposed without considering the cleanliness of the back side of the tape body 130. Therefore, in other embodiments of the present invention, the light shielding tape may include only the light-shielding tape body 130 and the first release film 110 attached to the front surface of the tape body 130.
  • the tape body 130 is a double-sided adhesive tape having an adhesive layer formed on the upper surface and the lower surface thereof. 131.
  • the first release film 110 is attached to the upper surface of the tape body 130 through the adhesive layer 131 on the upper surface of the tape body 130.
  • the second release film 120 is attached to the lower surface of the tape body 130 through the adhesive layer on the lower surface of the tape body 130.
  • the tape body 130 is a PET light-shielding film layer, and black light-absorbing adhesive layers 131 are disposed on both sides thereof.
  • the first release film 110 and the second release film 120 are PET single-sided release films.
  • the black light absorbing adhesive layer 131 is an adhesive layer containing a light absorbing additive, and is mainly used for absorbing light that is irradiated onto the tape body 130 by the backlight module to avoid a bright edge phenomenon.
  • the materials about the tape body 130, the first release film 110 and the second release film 120 can be reasonably selected according to process parameters and cost, and are not limited to the specific materials given in the embodiment.
  • the cutting lines 111, 112 are engaged with the bottom edges of the first release film 110 to achieve a remaining portion, but the present invention is not limited thereto.
  • the cutting lines 111, 112 may also be closed by themselves, i.e., the closed cutting line. In this case, the closed cutting line can define the remaining area separately without the need to resort to the corresponding side or bottom side of the first release film 110.
  • FIG. 3A is a schematic structural view of a light shielding tape according to another embodiment of the present invention. Unlike the light-shielding tape shown in FIG. 2A, in the light-shielding tape shown in FIG. 3A, two closed cut lines are formed on the first release film 110. Each of the closed cutting lines defines a retaining portion of the shape. After the first release film is peeled off, the two strip-shaped remaining portions - A 3 , B 3 are retained on the tape body 130 as shown in Fig. 3B.
  • the remaining portion of the first release film 110 on the tape body 130 is two pieces, respectively: a reserved portion A 2 and a reserved portion B 2 .
  • the remaining portion A 2 and the remaining portion B 2 are strip-shaped.
  • the remaining portion on the first release film 110 may be set to an elongated shape, and in one
  • the width of the elongated portion of the strip in the example is between 2 mm and 10 mm, and the lengthwise direction of the strip extends in the direction in which the wide side regions of the tape body 130 extend.
  • the direction in which the wide side regions extend on the first release film 110 is as indicated by the arrows in FIGS. 2A and 2C.
  • the reserved portion may also be a plurality of blocks, and may be designed in other shapes such as a square, a circle, or the like.
  • FIG. 4A is a schematic structural view of a light shielding tape according to still another embodiment of the present invention.
  • four non-closed cutting lines are formed on the first release film 110.
  • Each of the non-closed cutting lines cooperates with the bottom edge of the first release film 110 to define a square retaining portion.
  • the four square remaining portions -A 4 , B 4 , C 4 , D 4 are retained on the tape body 130 as shown in FIG. 4B.
  • FIG. 5A is a schematic structural view of a light shielding tape according to still another embodiment of the present invention.
  • two closed cut lines are formed on the first release film 110.
  • Each of the closed cutting lines defines an elliptical retaining portion.
  • the two elliptical portions - the remaining portion A 5 and the remaining portion B 5 are retained on the tape body 130 as shown in Fig. 5B.
  • FIG. 6A is a schematic view of a light shielding tape according to another embodiment of the present invention.
  • three closed elongated cutting lines are formed on the first release film 110.
  • Each of the closed elongated cutting lines defines a long strip of retained portion.
  • the three elongated retaining portions -A 6 , B 6 , C 6 are retained on the tape body 130 as shown in Fig. 6B.
  • the tape body 130 has a quadrangular shape, and includes a wide side region 132 and three narrow side regions 133, wherein the wide side region 132 corresponds to the light source side of the backlight module. .
  • the remaining portion A 2 and the remaining portion B 2 are located on the side corresponding to the wide side region 132 of the tape body 130, but the present invention is not limited thereto.
  • the tape body 130 may also have various regular shapes such as a round frame shape and a multi-frame shape. At the same time, the tape body 130 may also have an irregular shape.
  • first release film and the second release film is not limited to the rectangular shape shown in FIG. 2A.
  • the first release film and the second release film can be processed into various suitable shapes in consideration of mechanical strength and processing cost.
  • the tear-off portion 113 can be located at any position outside the first release film 110 that is connected to the tear-off portion, such as above, below, to the left, or to the right.
  • the length of the tear-off portion may be between 0.5 cm and 1.5 cm, so that the operator can apply force without special equipment, and of course, it can also be appropriately adapted as needed.
  • the tool is applied.
  • the cutting line is located on the side close to the tear-off portion 113, so that the risk of the torn portion on the first release film 110 taking away the remaining portion at the same time can be avoided as much as possible.
  • the remaining portion of the first release film 110 remaining on the tape body 130 may have another function: partially compensated The difference in thickness between the polarizer and the array substrate.
  • the backlight module 200 includes: a back plate 210; a light guide plate 220 and a light bar 230 located in the back plate 210; and a prism 240 located in the back plate 210 between the light guide plate 220 and the display panel 300; A protective layer 250 between the prism 240 and the display panel 300.
  • the first release pattern on the light-shielding tape 100 is formed.
  • the remaining portions A 2 and B 2 of the film 110 are interposed between the tape body 130 and the array substrate 320, and the thickness h 1 of the remaining portions A 2 and B 2 of the first release film 110 is lower than the thickness h 2 of the lower polarizer. Thin 30 ⁇ m ⁇ 50 ⁇ m.
  • Step A providing or preparing a backlight module 200
  • Step D mounting the display panel 300 over the tape body 130, the first release film retaining portions A 2 , B 2 , wherein the tape body 130 and the remaining portions A 2 , B 2 of the first release film 110 will display the panel 300
  • the backlight module 200 is spaced apart from each other, and the remaining portions A 2 , B 2 of the first release film 110 are located below the array substrate 320, and have a thickness equal to or slightly smaller than or equal to the thickness of the lower polarizer 310, thereby compensating for the lower polarization. The difference in thickness between the sheet 310 and the array substrate 320.
  • the display device and the method for fabricating the same include other components, processes, and steps, which are not described herein.
  • the material of the tape body, the first release film, and the second release film on the light-shielding tape is not limited to the specific materials given in the embodiment, and those skilled in the art can select among the transparent polymer materials according to actual needs. ;
  • the light shielding tape of the present invention has at least one of the following beneficial effects:
  • the shape and size of the first release film retaining portion can be flexibly set for the functional area of the backlight module and the relevant area on the display panel, which is more flexible than the single-sided tape (or PET film);
  • the first release film retaining portion defined by the cutting line is strip-shaped, and the width thereof is between 2 mm and 10 mm, which is easy to tear off, further saving time cost and labor cost;
  • the first release film remaining portion remaining on the tape body is located on the step structure between the lower polarizer of the display panel and the array substrate, the thickness of the remaining portion being slightly smaller than the thickness of the lower polarizer, thereby being above When the array substrate is under pressure, a certain supporting effect is exerted on the array substrate, thereby enhancing the overall structural strength of the backlight module and the display panel.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mathematical Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Liquid Crystal (AREA)
  • Adhesive Tapes (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

一种遮光胶带（100）、应用该遮光胶带（100）的显示装置及其制备方法。该遮光胶带（100）包括：遮光的胶带本体（130）；和第一离型膜（110），贴合于胶带本体（130）的第一表面。第一离型膜（110）包括至少一条裁切线（111，112），至少一条裁切线（111，112）在第一离型膜（110）上限定出保留部分（A2，B2），并且保留部分（A2，B2）在将第一离型膜（110）从胶带本体（130）撕离的过程中，能够自裁切线（111，112）处断裂而保留在胶带本体（130）上。

Description

遮光胶带、应用该遮光胶带的显示装置及其制备方法
本申请要求于2016年07月18日递交的、申请号为201610565408.2、发明名称为“遮光胶带、应用该遮光胶带的显示装置及其制备方法”的中国专利申请的优先权，其全部内容通过引用并入本申请中。
技术领域
本发明涉及显示技术领域，尤其涉及一种遮光胶带、应用该遮光胶带的显示装置及其制备方法。
背景技术
现有技术中，采用在背光模组的背板与显示面板的下表面边缘之间设置遮光胶带的方法来解决背光模组的漏光问题。然而，遮光胶带经常会与显示面板贴附在一起，这会造成背光模组的灯前的亮暗点缺陷。
发明内容
本发明的目的至少部分是提供了一种遮光胶带、应用该遮光胶带的显示装置及其制备方法。
根据本发明的一个方面，提供了一种用于显示装置的遮光胶带，该遮光胶带包括：
遮光的胶带本体；和
第一离型膜，贴合于所述胶带本体的第一表面；
其中，所述第一离型膜包括至少一条裁切线，所述至少一条裁切线在所述第一离型膜上限定出保留部分，并且所述保留部分在将所述第一离型膜从所述胶带本体撕离的过程中，能够自所述裁切线处断裂而保留在所述胶带本体上。
在一个示例中，所述裁切线为闭合裁切线，所述闭合裁切线独自在所述第一离型膜上限定出保留部分。
在一个示例中，所述裁切线为非闭合裁切线，所述非闭合裁切线与所述第一离型膜的相应边配合限定出保留部分。
在一个示例中，所述胶带本体的第一表面具有胶黏层，所述第一离型膜通过所述第一表面的胶黏层贴合于所述胶带本体上。
在一个示例中，所述胶黏层为包含吸光添加剂的黑色吸光胶黏层。
在一个示例中，所述保留部分为以下形状中的一种或多种的组合：长条形、长方形、圆形或椭圆形。
在一个示例中，所述胶带本体为框形的胶带本体，所述框形的胶带本体包括至少一个宽侧边区；
其中，所述至少一条裁切线位于所述第一离型膜上的与所述至少一个宽侧边区对应的一侧。
在一个示例中，所述保留部分为长条形，所述保留部分的宽度介于2mm～10mm之间，所述保留部分的长度方向沿所述宽侧边区延伸的方向。
在一个示例中，所述第一离型膜上保留部分的个数介于2～4之间。
在一个示例中，所述第一离型膜还具有撕离部，所述至少一条裁切线位于所述第一离型膜上靠近所述撕离部的一侧。
在一个示例中，所述撕离部配置成在受到施力时将所述第一离型膜自所述胶带本体上撕离，并将所述保留部分自所述裁切线处断裂而保留在所述胶带本体上。
在一个示例中，所述第一离型膜的厚度介于0.02mm～0.1mm之间。
在一个示例中，所述胶带本体为PET遮光膜层，所述第一离型膜为PET单面离型膜。
在一个示例中，所述遮光胶带还包括：第二离型膜，贴合于所述胶带本体的第二表面，所述第二表面与所述第一表面相对设置。
在一个示例中，所述胶带本体的第二表面具有胶黏层，所述第二离型膜通过所述第二表面的胶黏层贴合于所述胶带本体上，其中，所述胶黏层为包含吸光添加剂的黑色吸光胶黏层。
在一个示例中，第二离型膜为PET单面离型膜。
根据本发明的另一方面，提供了一种显示装置，包括：
显示面板；
背光模组；和
夹设于所述显示面板和背光模组之间的如上所述的遮光胶带。
在一个示例中，所述显示面板包括自入光侧向出光侧依次排列的：下偏光片和阵列基板；所述下偏光片的侧边位于阵列基板朝向背光模组的侧面内，且下偏光片与阵列基板之间形成台阶结构；
所述胶带本体位于背光模组上，所述第一离型膜的保留部分夹设于胶带本体和所述阵列基板之间，满足：
30μm≤(h2-h1)≤50μm
其中，所述h2为所述下偏光片的厚度；所述h1为第一离型膜的保留部分的厚度。
根据本发明的另一方面，提供了一种显示装置的制备方法，包括：
提供背光模组；
将如上所述的遮光胶带贴附于背光模组上；
撕离第一离型膜，其中，第一离型膜上由裁切线所限定的保留部分在裁切线处断裂而保留在胶带本体上；
在胶带本体、第一离型膜的保留部分的上方安装显示面板，其中，胶带本体将显示面板和背光模组隔开，所述第一离型膜的保留部分将胶带本体和显示面板隔开。
在一个示例中，所述制备方法还包括在将遮光胶带贴附于背光模组上之前，将遮光胶带的胶带本体下方的第二离型膜撕离的步骤。
附图说明
图1为根据本发明的一个实施例的在遮光胶带上加贴单面胶带的示意图；
图2A为根据本发明的另一实施例的遮光胶带的结构示意图；
图2B为图2A所示遮光胶带在撕离第二离型膜后贴附于背光模组的示意图；
图2C为图2B所示遮光胶带的基础上继续撕离第一离型膜后的示意图；
图3A为根据本发明另一实施例的遮光胶带的结构示意图；
图3B为图3A所示遮光胶带在撕离第一离型膜和第二离型膜后胶带本体的示意图；
图4A为根据本发明再一实施例的遮光胶带的结构示意图；
图4B为图4A所示遮光胶带在撕离第一离型膜和第二离型膜后胶带本体的示意图；
图5A为根据本发明又一实施例的遮光胶带的结构示意图；
图5B为图5A所示遮光胶带在撕离第一离型膜和第二离型膜后胶带本体的示意图；
图6A为根据本发明还一实施例的遮光胶带的结构示意图；
图6B为图6A所示遮光胶带在撕离第一离型膜和第二离型膜后胶带本体的示意图；
图7为根据本发明还一实施例的遮光胶带在撕离第一离型膜后不规则形状胶带本体的示意图；
图8为根据本发明一个实施例的显示装置的结构示意图；
图9为根据本发明一个实施例的显示装置的制备方法的流程图。
具体实施方式
为使本发明的目的、技术方案和优点更加清楚明白，以下结合具体实施例，并参照附图，对本发明进一步详细说明。
针对于背景技术部分所提及到的技术问题，根据本发明的一个实施例提供了一种解决方案：在背光模块入光处的遮光胶带10上加贴一单面胶带或PET(Polyethylene terephthalate，聚对苯二甲酸乙二醇酯)膜11，如图1所示。
然而，加贴单面胶或PET膜11不仅增加了材料成本，并且，遮光胶带10与单面胶11需要分步骤单独组装，效率较低，间接提升了显示装置的人工成本。
在本发明的下述实施例中，采用了与上述的实施例不同的设计构思：将遮光胶带离型膜在原需要贴附单面胶带处做裁切线处理，使用时将离型膜撕离，而需要保留部分可以从裁切线处断裂，从而实现了节省单面胶带成本及组立单面胶带时间的目的。
本发明的另一实施例提供了一种遮光胶带。请参照图2A，该遮光胶带100包括：遮光的胶带本体130及分别贴合于胶带本体两侧的第一离型膜110和第二离型膜120。
需要说明的是，在图2A中，为了清楚起见，将第一离型膜110、第二离型膜120和胶带本体130表示为分开的三层。但实际上，未使用时，第一离型膜110、第二离型膜120和胶带本体130是贴合在一起的，两两之间并没有间隙。
在未使用时，胶带本体130夹置于第一离型膜110和第二离型膜120之间。在使用过程中，将第二离型膜120撕离，将胶带本体130和第一离型膜110贴附与背光模组的胶框上，如图2B所示。
如图2A和图2B所示，在第一离型膜110上，形成有两条裁切线111和112。裁切线111和112和第一离型膜110的底边及侧边限定了第一离型膜保留部分，如图中A2和B2所示，而除了保留部分之外的其他部分则作为第一离型膜的撕离部分。在使 用过程中，撕离第一离型膜110时，裁切线111所对应的保留部分A2及裁切线112所对应的保留部分B2在各自的裁切线处断裂，从而被保留在胶带本体110上，如图2C所示；而除保留部分A2和B2之外的第一离型膜110的撕离部分被撕离。
以下分别对本实施例遮光胶带的各个组成部分进行详细描述。
请参照图2A，本实施例遮光胶带100包括：遮光的胶带本体130及分别贴合于胶带本体130两侧的第一离型膜110和第二离型膜120。
本领域技术人员应当清楚，在不考虑胶带本体130背面清洁度的情况下，胶带本体130下方的第二离型膜120是可以省略的或不被设置。因此，在本发明其他实施例中，遮光胶带可以仅包括：遮光的胶带本体130及贴附于胶带本体130正面的第一离型膜110。
为了实现胶带本体130与上层的第一离型膜110以及与下层的第二离型膜120的贴合，胶带本体130为双面粘合胶带，其上表面和下表面均形成有胶黏层131。通过胶带本体130上表面的胶黏层131，第一离型膜110贴合于胶带本体130的上表面。通过胶带本体130下表面的胶黏层，第二离型膜120贴合于胶带本体130的下表面。
本实施例中，胶带本体130为PET遮光膜层，其两侧面设有黑色吸光胶黏层131。该第一离型膜110和第二离型膜120为PET单面离型膜。上述黑色吸光胶黏层131为包含吸光添加剂的胶黏层，其主要用于吸收背光模组照射到胶带本体130上的光线，避免出现亮边现象。
可以理解的是，关于胶带本体130、第一离型膜110和第二离型膜120的材料，可以根据工艺参数和成本需要合理选择，并不局限于本实施例所给出的特定材料。
应当理解的是，在胶带本体130与离型膜相对的两表面充分清洁的情况下，通过大气压力也可以实现两者的紧密贴合，在这种情况下，胶带本体130上的胶黏层131也可以省略。
在图2A所示的遮光胶带100中，裁切线111、112与第一离型膜110的底边配合，实现留下保留部分，但本发明并不限于此。在本发明其他实施例中，裁切线111、112还可以自身是闭合的，即是闭合裁切线。在这种情况下，闭合裁切线就可以单独限定出保留区域，而不需要再借助第一离型膜110的相应侧边或底边。
图3A为根据本发明另一实施例的遮光胶带的结构示意图。与图2A所示的遮光胶带不同，图3A所示的遮光胶带中，第一离型膜110上形成两条闭合裁切线。每一条闭合裁切线限定出一条形的保留部分。在将第一离型膜撕离之后，两个条形的保留 部分-A3、B3被保留在胶带本体130上，如图3B所示。
在图2A所示的遮光胶带中，第一离型膜110在胶带本体130上的保留部分为两块，分别为：保留部分A2和保留部分B2。并且，保留部分A2和保留部分B2均呈条形。事实上，为了实现避免遮光胶带100与液晶显示面板贴附在一起，同时考虑到加工和操作的便利性，也可以将第一离型膜110上的保留部分设置为长条形，并且在一个示例中长条形的保留部分的宽度介于2mm～10mm之间，并且，该长条形的长度方向沿胶带本体130上宽侧边区延伸的方向。其中，在第一离型膜110上宽侧边区延伸的方向如图2A和图2C中箭头所示。
可以理解的是，在本发明其他实施例中，保留部分还可以为多块，并且可以被设计为正方形、圆形等其他形状。
图4A为根据本发明再一实施例的遮光胶带的结构示意图。在图4A所示遮光胶带中，第一离型膜110上形成四条非闭合裁切线。每一条非闭合裁切线与第一离型膜110的底边相配合，限定出一正方形的保留部分。在将第一离型膜110撕离之后，四个正方形的保留部分-A4、B4、C4、D4被保留在胶带本体130上，如图4B所示。
图5A为根据本发明又一实施例的遮光胶带的结构示意图。在图5A所示的遮光胶带中，第一离型膜110上形成两条闭合裁切线。每一条闭合裁切线限定出一椭圆形的保留部分。在将第一离型膜110撕离之后，两个椭圆形部分-保留部分A5和保留部分B5被保留在胶带本体130上，如图5B所示。
图6A为根据本发明另一实施例的遮光胶带的示意图。在图6A所示遮光胶带中，第一离型膜110上形成三条闭合长条形裁切线。每一条闭合长条形裁切线限定出一长条形的保留部分。在将第一离型膜110撕离之后，三个长条形的保留部分-A6、B6、C6被保留在胶带本体130上，如图6B所示。
在图2A所示的遮光胶带中，胶带本体130为四边框形，其包括一个宽侧边区132和三个窄侧边区133，其中，宽侧边区132对应于背光模组的光源侧。而第一离型膜110上，保留部分A2及保留部分B2位于胶带本体130的宽侧边区132对应的一侧，但本发明并不限于此。在本发明其他实施例中，胶带本体130还可以为圆框形、多边框形等各种规则形状。同时，胶带本体130还可以是不规则形状。
图7为根据本发明另一实施例的遮光胶带在撕离第一离型膜110后不规则形状的胶带本体130的示意图。由图7可以看出，胶带本体130呈现不规则框形，在其左、右两侧的宽侧边区上，第一离型膜在撕离后保留下来两块保留部分-保留部分A7、保 留部分B7，此外，在其上、下方的窄侧边区上，同样形成有保留部分C7和保留部分D7。
同时，本领域技术人员应当清楚，对于第一离型膜和第二离型膜而言，其整体形状也不限定于图2A所示的长方形。考虑到机械强度和加工成本，可以将第一离型膜和第二离型膜加工成各种合适的形状。
此外，返回至图2A和图2C，为方便撕离第一离型膜，在第一离型膜上设置伸出显示装置外侧的撕离部113。在将胶带本体130和第一离型膜110贴附于背光模组的胶框上之后，通过向外侧拖拽该撕离部113，就可以将第一离型膜110除保留部分之外的撕扯部分撕下，而将保留部分保留在胶带本体130上。
本领域技术人员应当清楚，该撕离部113可以位于第一离型膜110外侧的与撕离部分连接的任何位置，例如是上方、下方、左侧或右侧。并且，在一个示例中，该撕离部的长度可以介于0.5cm～1.5cm之间，以便于操作人员在不借助专门设备的情况下能够施力，当然可替代地也可以根据需要采用适当的工具施力。例如，在第一离型膜110上，裁切线位于靠近撕离部113的一侧，这样可以尽可能地避免第一离型膜110上撕离部分将保留部分同时带走的风险。
需要说明的是，除了避免遮光胶带100和液晶显示面板贴附在一起的功能之外，保留在胶带本体130上的第一离型膜110的保留部分还可以有另外的作用：部分地补偿下偏光片和阵列基板之间的厚度差。
下偏光片的厚度约为0.05mm～0.15mm，第一离型膜的厚度h1在一个示例中为比下偏光片的厚度h2小30μm～50μm。在实际装配时，第一离型膜保留部分位于下偏光片和阵列基板之间的台阶处。在加工过程中阵列基板要受到向下的压力，当下压到一定程度时，第一离型膜110保留部分会对阵列基板产生一定的支撑作用，从而增强了背光模组和显示面板的整体结构强度。
基于上述的遮光胶带，本发明的另一实施例还提供了一种显示装置。请参照图8，该显示装置包括：显示面板300；背光模组200；以及夹设于两者之间的遮光胶带100的胶带本体130和第一离型膜110的保留部分A2、B2。
在一个示例中，背光模组200包括：背板210；位于背板210内的导光板220和灯条230；位于背板210内且位于导光板220与显示面板300之间的棱镜240；位于棱镜240与显示面板300之间的保护层250。
在一个示例中，显示面板300包括由入光侧向出光侧依次排列的：下偏光片 310、阵列基板320、彩膜基板330和上偏光片340。
遮光胶带100的胶带本体130沿显示面板的边缘布置，夹设于背光模组200和显示面板300之间。具体地，该胶带本体130夹设在背光模组200的背板210和保护层250与显示面板300的下偏光片310和阵列基板320之间。该胶带本体130将显示面板300和背光模组200隔开一段距离，从而避免了两者贴合在一起，避免了造成背光模组200的灯前亮暗点现象。
当入光边缘处下偏光片310的侧边位于阵列基板320朝向背光模组200的侧面内，且下偏光片310与阵列基板320之间形成台阶结构时，遮光胶带100上的第一离型膜110的保留部分A2、B2夹设于胶带本体130和阵列基板320之间，且第一离型膜110的保留部分A2、B2的厚度h1较下偏光片的厚度h2薄30μm～50μm。在这种情况下，第一离型膜的保留部分A2、B2可以部分补偿下偏光片310和阵列基板320之间的厚度差，从而使阵列基板320的外侧在受力时获得稳定支撑，增强了显示装置的整体结构强度。
以下给出上述图8所示显示装置的制备方法，请参照图2A～图2C、图8和图9，该显示装置的制备方法包括：
步骤A：提供或制备背光模组200；
步骤B：将遮光胶带100的胶带本体130下方的第二离型膜120撕离，将胶带本体130连同其正面的第一离型膜110贴附于背光模组200上；
步骤C：撕离第一离型膜110，其中，第一离型膜110上裁切线所限定的保留部分-A2、B2在裁切线处断裂，保留在胶带本体130上；
步骤D：在胶带本体130、第一离型膜保留部分A2、B2上方安装显示面板300，其中，胶带本体130和第一离型膜110的保留部分A2、B2将显示面板300和背光模组200隔开，并且，第一离型膜110的保留部分A2、B2位于阵列基板320的下方，其厚度等于或略小于或等于下偏光片310的厚度，从而补偿下偏光片310和阵列基板320之间的厚度差。
在一个示例中，第一离型膜保留部分A2、B2的厚度h1，比下偏光片310的厚度h2小30μm～50μm，具体请参照上文的相关说明。
当然，根据实际需要，本发明显示装置及其制备方法还包含其他的部件、工艺和步骤，此处不再赘述。
需要说明的是，在附图或说明书正文中，未绘示或描述的实现方式，均为所属技 术领域中普通技术人员所知的形式，并未进行详细说明。此外，上述对各元件和方法的定义并不仅限于实施例中提到的各种具体结构、形状或方式，本领域普通技术人员可对其进行简单地更改或替换，例如：
(1)遮光胶带上胶带本体、第一离型膜、第二离型膜的材料并不局限于实施例中给出的特定材料，本领域技术人员可以根据实际需要在透明高分子材料中选择；
(2)关于第一离型膜上保留部分的个数、形状、尺寸、位置，本领域技术人员可以根据实际需要合理选择，并不局限于实施例中给出的样式；
(3)关于显示装置中显示面板和背光模组的结构和组成，并不局限于实施例中给出的特定形式，本发明同样可以适用于其他结构的显示装置。
并且，还需要说明的是，本文可提供包含特定值的参数的示范，但这些参数无需确切等于相应的值，而是可在可接受的误差容限或设计约束内近似于相应值。实施例中提到的方向用语，例如“上”、“下”、“前”、“后”、“左”、“右”等，仅是参考附图的方向，并非用来限制本发明的保护范围。此外，除非特别描述或必须依序发生的步骤，上述步骤的顺序并无限制于以上所列，且可根据所需设计而变化或重新安排。并且上述实施例可基于设计及可靠度的考虑，彼此混合搭配使用或与其他实施例混合搭配使用，即不同实施例中的技术特征可以自由组合形成更多的实施例。
综上所述，本发明的多个实施例将遮光胶带离型膜在原需要贴附单面胶带处做裁切线处理，使用时将离型膜撕离，而需要保留部分可以从裁切线处断裂，可以节省单面胶带成本及组立单面胶带时间，从而降低背光源成本。
从上述各个实施例提供的技术方案可以看出，本发明遮光胶带、应用该遮光胶带的显示装置及其制备方法至少具有以下有益效果其中之一：
(1)提供了一种不同于以往的新型的遮光胶带；
(2)不需要额外增加贴附单面胶或PET膜的工艺，仅通过简单撕离操作就可以实现相同的功能，操作方便，节约了时间成本和人力成本；
(3)制作遮光胶带时，在预设的位置增加裁切线，对于遮光胶带甚至整个显示装置的成本增加很少，几乎可以忽略不计；
(4)可以针对背光模组和显示面板上相关区域的功能面积选择灵活设定第一离型膜保留部分的形状和尺寸，相比于单面胶带(或PET膜)更加灵活；
(5)通过裁切线限定的第一离型膜保留部分为条状，其宽度介于2mm～10mm之间，容易撕离，进一步节约了时间成本和人力成本；
(6)由裁切线所限定的第一离型膜保留部分在裁切线处断裂，并仍然保留在胶带本体上，起到和单面胶带或PET膜相同的作用，避免遮光胶带与显示面板贴附在一起而造成的背光模组的灯前亮暗点缺陷，效果不会受到任何实质影响；
(7)保留在胶带本体上的第一离型膜保留部分位于显示面板的下偏光片和阵列基板之间的台阶结构上，该保留部分的厚度略小于下偏光片的厚度，从而在上方的阵列基板承压时，对阵列基板产生一定的支撑作用，从而增强了背光模组和显示面板的整体结构强度。
以上所述的具体实施例，对本发明的目的、技术方案和有益效果进行了进一步详细说明，所应理解的是，以上所述仅为本发明的具体实施例而已，并不用于限制本发明，凡在本发明的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (20)

  1. 一种用于显示装置的遮光胶带，该遮光胶带包括：
    遮光的胶带本体；和
    第一离型膜，贴合于所述胶带本体的第一表面；
    其中，所述第一离型膜包括至少一条裁切线，所述至少一条裁切线在所述第一离型膜上限定出保留部分，并且所述保留部分在将所述第一离型膜从所述胶带本体撕离的过程中，能够自所述裁切线处断裂而保留在所述胶带本体上。
  2. 根据权利要求1所述的遮光胶带，其中，所述裁切线为闭合裁切线，所述闭合裁切线独自在所述第一离型膜上限定出保留部分。
  3. 根据权利要求1所述的遮光胶带，其中，所述裁切线为非闭合裁切线，所述非闭合裁切线与所述第一离型膜的相应边配合限定出保留部分。
  4. 根据权利要求1-3中任一项所述的遮光胶带，其中，所述胶带本体的第一表面具有胶黏层，所述第一离型膜通过所述第一表面的胶黏层贴合于所述胶带本体上。
  5. 根据权利要求4所述的遮光胶带，其中，所述胶黏层为包含吸光添加剂的黑色吸光胶黏层。
  6. 根据权利要求1-5中任一项所述的遮光胶带，其中，所述保留部分为以下形状中的一种或多种的组合：长条形、长方形、圆形或椭圆形。
  7. 根据权利要求1-6中任一项所述的遮光胶带，其中，所述胶带本体为框形的胶带本体，所述框形的胶带本体包括至少一个宽侧边区；
    其中，所述至少一条裁切线位于所述第一离型膜上的与所述至少一个宽侧边区对应的一侧。
  8. 根据权利要求7所述的遮光胶带，其中，所述保留部分为长条形，所述保留部分的宽度介于2mm～10mm之间，所述保留部分的长度方向沿所述宽侧边区延伸的方向。
  9. 根据权利要求1至8中任一项所述的遮光胶带，其中，所述第一离型膜上保留部分的个数介于2～4之间。
  10. 根据权利要求1至9中任一项所述的遮光胶带，其中，所述第一离型膜还具有撕离部，所述至少一条裁切线位于所述第一离型膜上靠近所述撕离部的一侧。
  11. 根据权利要求10所述的遮光胶带，其中，所述撕离部配置成在受到施力时 将所述第一离型膜自所述胶带本体上撕离，并将所述保留部分自所述裁切线处断裂而保留在所述胶带本体上。
  12. 根据权利要求1至11中任一项所述的遮光胶带，其中，所述第一离型膜的厚度介于0.02mm～0.1mm之间。
  13. 根据权利要求1至12中任一项所述的遮光胶带，其中，所述胶带本体为PET遮光膜层，所述第一离型膜为PET单面离型膜。
  14. 根据权利要求1至13中任一项所述的遮光胶带，还包括：
    第二离型膜，贴合于所述胶带本体的第二表面，所述第二表面与所述第一表面相对设置。
  15. 根据权利要求14所述的遮光胶带，其中，所述胶带本体的第二表面具有胶黏层，所述第二离型膜通过所述第二表面的胶黏层贴合于所述胶带本体上，其中，所述胶黏层为包含吸光添加剂的黑色吸光胶黏层。
  16. 根据权利要求14或15所述的遮光胶带，其中，第二离型膜为PET单面离型膜。
  17. 一种显示装置，包括：
    显示面板；
    背光模组；和
    夹设于所述显示面板和背光模组之间的如权利要求1至16中任一项所述的遮光胶带。
  18. 根据权利要求17所述的显示装置，其中，所述显示面板包括自入光侧向出光侧依次排列的：下偏光片和阵列基板；所述下偏光片的侧边位于阵列基板朝向背光模组的侧面内，且下偏光片与阵列基板之间形成台阶结构；
    所述胶带本体位于背光模组上，所述第一离型膜的保留部分夹设于胶带本体和所述阵列基板之间，满足：
    30μm≤(h2-h1)≤50μm
    其中，所述h2为所述下偏光片的厚度；所述h1为第一离型膜的保留部分的厚度。
  19. 一种显示装置的制备方法，包括：
    提供背光模组；
    将如权利要求1至16中任一项所述的遮光胶带贴附于背光模组上；
    撕离第一离型膜，其中第一离型膜上由裁切线所限定的保留部分在裁切线处断裂而保留在胶带本体上；
    在胶带本体、第一离型膜的保留部分的上方安装显示面板，其中，胶带本体将显示面板和背光模组隔开，所述第一离型膜的保留部分将胶带本体和显示面板隔开。
  20. 根据权利要求19所述的制备方法，还包括在将遮光胶带贴附于背光模组上之前，将遮光胶带的胶带本体下方的第二离型膜撕离的步骤。
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