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WO2011157037A1 - Polarizing plate for liquid crystal screen - Google Patents

Polarizing plate for liquid crystal screen Download PDF

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Publication number
WO2011157037A1
WO2011157037A1 PCT/CN2010/080168 CN2010080168W WO2011157037A1 WO 2011157037 A1 WO2011157037 A1 WO 2011157037A1 CN 2010080168 W CN2010080168 W CN 2010080168W WO 2011157037 A1 WO2011157037 A1 WO 2011157037A1
Authority
WO
WIPO (PCT)
Prior art keywords
liquid crystal
polarizing plate
film
crystal panel
light
Prior art date
Application number
PCT/CN2010/080168
Other languages
French (fr)
Chinese (zh)
Inventor
卢璋
黄宏
余启明
Original Assignee
欧浦登(福建)光学有限公司
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 欧浦登(福建)光学有限公司 filed Critical 欧浦登(福建)光学有限公司
Publication of WO2011157037A1 publication Critical patent/WO2011157037A1/en

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • 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
    • G02B1/105—
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
    • G02B1/11—Anti-reflection coatings
    • G02B1/111—Anti-reflection coatings using layers comprising organic materials
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
    • G02B1/14—Protective coatings, e.g. hard coatings
    • 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
    • G02F1/13356—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements
    • G02F1/133562—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements on the viewer side
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/50—Protective arrangements

Definitions

  • the invention relates to an assembly of a liquid crystal display, and more particularly to a polarizing plate and a liquid crystal panel using the same.
  • a polanzer is one of important components of a liquid crystal display device (LCD), and is an optical film having a function of generating polarized light, which is a composite of a plurality of polymer materials.
  • the polarizer is attached to both sides of the liquid crystal cell 4, and is referred to as an upper polarizer 01 (or a transmissive film) and a lower polarizer 02 (or a reflective sheet), respectively, and functions as a backlight. Polarization of light.
  • the liquid crystal display device changes the electric signal of the liquid crystal layer in the liquid crystal cell, so that the liquid crystal molecules of the liquid crystal layer are twisted to form an optical channel having a certain twist angle, and when the polarized light passes through the optical channel, the conduction amount and the cutoff amount are controlled, thereby A vivid picture is presented.
  • the conventional upper polarizer structure is a sandwich structure, as shown in Fig. 1, consisting of two layers of protective film 04, 05 and an intermediate polarizing film 03.
  • the polarizing film 03 is made by dyeing and stretching a polyvinyl alcohol material, and its performance determines the polarizing performance and transmittance of the polarizer, and also affects the color tone and optical durability of the polarizer. Since the polarizing film 03 made of polyvinyl alcohol is easy to absorb water and fade, and loses the polarizing property, it is necessary to use a protective film 04, 05 having good optical uniformity and transparency on both sides to isolate moisture and air and protect the polarized light.
  • the protective layer films 04, 05 generally use a cellulose triacetate (TAC) film.
  • TAC cellulose triacetate
  • Anti-UV polarizers and anti-glare polarizers can be made by using a protective film with UV CUT and Anti-Glare.
  • the liquid crystal display device is formed by laminating the polarizer on the glass surface of the liquid crystal cell 4.
  • the protective film still has a certain moisture permeability (permeability is about 300 g/m 2 /day), in the case of high temperature and high humidity. Its protection capacity is slightly insufficient;
  • the surface scratch resistance of the protective film is theoretically up to 3H after being coated with a hard coat layer.
  • the thickness is generally about 300 ⁇ . Directly attached to the glass surface of a fragile liquid crystal cell, the polarizer does not have sufficient rigidity to achieve higher scratch resistance requirements;
  • the polarizer Since the polarizer is composed of a flexible material, it does not have the function of protecting the liquid crystal cell. When the liquid crystal panel is subjected to an external force or is under excessive pressure, the liquid crystal cell is easily damaged;
  • the light-emitting surface of the protective layer film 04 of the polarizer is usually treated with a pitting surface to achieve an anti-glare effect (Anti-Gl are ).
  • This pitting treatment has two-sidedness, and although it achieves the purpose of dispersing external disturbance light, it also disperses the light emitted from the liquid crystal cell, and lowers the contrast performance of the liquid crystal panel.
  • "hard screen” technology for improving the appearance and safety of the display has been put into use, and features such as frameless, gorgeous and impact resistant are realized.
  • this hard screen 09 only adds a layer of high-permeability hard material 06 to the original LCD screen, such as plexiglass (acrylic sheet), printed black-framed glass, etc., high-permeability hard material 06
  • the protective film 19 is attached to both sides, and the relatively independently added hard screen 09 does not relate to the basic structure of the liquid crystal panel combined by the polarizer. Due to the gap between the hard screen 09 and the liquid crystal screen, the polarized light emitted by the liquid crystal screen generates secondary refraction and internal reflection at the slit, thereby directly affecting the quality of the display screen. As an improvement, the light guiding resin 08 is injected between the hard screen 09 and the polarizer 01 of the liquid crystal panel. This method solves the disadvantage of using the "hard screen” to cause secondary refraction, but increases the number of Manufacturing process difficulty and cost.
  • An object of the present invention is to provide a polarizing plate having a transmissive polarizing function, a brightness increasing function, an anti-reflection function, an impact-resistant protection function, and an ultra-thin planar decorative function of a whole structure.
  • the polarizing plate of the present invention is glued on the light-emitting surface of the liquid crystal cell, which comprises a polyvinyl alcohol film and a protective layer film, and the protective layer film is glued on the light-emitting surface of the polyvinyl alcohol film, wherein, the polarizing light
  • the plate further includes a glass substrate glued to the surface of the polyvinyl alcohol film facing the light-emitting surface of the liquid crystal cell as a protective layer on the other side of the polyvinyl alcohol film.
  • the polarizing plate uses a glass substrate as a component to improve the ability of the liquid crystal panel to resist external impact and pressure, compared with the "hard screen" in the prior art, the thickness of the liquid crystal screen is effectively reduced while ensuring the hardness;
  • the moisture permeability of the glass substrate is small, and the polyvinyl alcohol film can be effectively protected even in a high temperature and high pressure environment;
  • the liquid crystal display device using the polarizer can be designed with a frameless structure
  • the emitted light passes through the refraction of the glass substrate in the hard-screen polarizer, so that the horizontal viewing angle of the liquid crystal display device is expanded;
  • the polarizing plate not only integrates a plurality of functions into one structure, but the overall cost of manufacturing is much lower than that of the "hard screen" plus liquid crystal screen in the prior art.
  • the protective layer film of the present invention is a highly transparent cellulose triacetate film or a polyethylene terephthalate film.
  • the protective layer film various materials which are used in the prior art for producing a protective film for a liquid crystal panel polarizer can be used, and among them, a cellulose triacetate film and a polyethylene terephthalate film are preferable.
  • the glass substrate of the polarizing plate is a flat glass having a thickness of 0.5 mm to 2.5 mm. Among them, a flat glass having a thickness of 0.7 mm to 1.1 mm is preferable.
  • the flat glass of this thickness has sufficient flexibility and physical strength to facilitate the related bonding construction and processing of the polarizing plate and the light-emitting surface of the liquid crystal cell.
  • the glass substrate of the polarizing plate is subjected to a strengthening treatment, and the strengthening treatment is a chemical tempering treatment or an air-cooling tempering treatment.
  • the surface compressive stress value of the tempered glass substrate is greater than 450 MPa.
  • the tempering method is a glass tempering method well known in the prior art, such as separation in chemical tempering. Sub-exchange method, etc.
  • the tempered glass substrate can provide a higher use strength for the liquid crystal panel.
  • One or more plating layers of the antireflection vapor deposition layer, the scratch resistant vapor deposition layer, or the antistatic vapor deposition layer are deposited on the light-emitting surface of the protective layer film of the polarizing plate.
  • the anti-reflection coating has an anti-reflection function, thereby improving the optical contrast performance of the liquid crystal panel.
  • the scratch-resistant vapor deposition layer further improves the scratch resistance of the surface of the liquid crystal panel.
  • the antistatic evaporation layer can effectively reduce the static charge carried on the surface of the polarizing plate.
  • the polarizing plate has a pattern printed on the surface of the glass substrate or the protective layer film, and the pattern of the glass substrate is screen printed, and the printing ink is a resin-based ink or an ultraviolet-curable ink or a sintered ceramic ink which is dried in red.
  • the pattern on the cover film is offset.
  • the pattern may be a border of a display screen, a trademark, a function icon, a remote semi-transparent window, or the like, or may be other decorative patterns, and adopt various patterns to meet different appearance requirements of various manufacturers and consumers.
  • the bonding between the layers of the polarizing plate is glued by an optical pressure sensitive adhesive, and the glass substrate is provided with an optical pressure sensitive adhesive layer and a release protective film on the surface of the light emitting surface of the liquid crystal cell.
  • the release protective film can be uncovered, which facilitates the transportation and storage of the polarizing plate.
  • the release protective film is exposed to expose the optical pressure sensitive adhesive. Layer, install the light-emitting surface of the positive liquid crystal cell.
  • the polarizing plate of the present invention integrates various functions such as a polarizing function, a brightness enhancement function, an anti-reflection function, an impact impact protection function, and an ultra-thin planar decorative function of the whole structure, and replaces the traditional flexible polarized light.
  • the invention solves the defects that the conventional flexible polarizer can not overcome the contrast loss, the poor safety protection, the no decorative effect, the frame structure must hold the frame and the like.
  • FIG. 1 is a schematic structural view of a liquid crystal panel in the prior art
  • FIG. 2 is an exiting optical path diagram of a protective layer film of a polarizer in the prior art using a pockmark
  • FIG. 3 is a structural diagram of a hard screen in the prior art
  • Figure 4 is a schematic view showing the structure of Embodiments 1 and 2 of the polarizing plate of the present invention.
  • Figure 5 is a schematic view showing the structure of Embodiments 3 and 4 of the polarizing plate of the present invention.
  • Figure 6 is a schematic view showing the structure of Embodiments 5 to 7 of the polarizing plate of the present invention.
  • a polarizing plate of the present invention is bonded to a light-emitting surface 41 of a liquid crystal cell 4, which comprises a polyvinyl alcohol film 1 and a protective film 2, and the protective film 2 is glued together.
  • the polarizing plate On the light-emitting surface 12 of the vinyl alcohol film 1, the polarizing plate further includes a glass substrate 3 which is bonded to the surface 11 of the polyvinyl alcohol film 1 facing the light-emitting surface 41 of the liquid crystal cell 4 as a polyvinyl alcohol film. 1 The other side of the protective layer.
  • the protective layer film 2 various materials which are used in the prior art for producing a protective film for a liquid crystal panel polarizer can be used, and among them, a cellulose triacetate film and a polyethylene terephthalate film are preferable.
  • the glass substrate 3 of the polarizing plate is a flat glass having a thickness of 0.5 mm to 2.5 mm. Among them, flat glass having a thickness of 0.7 mm to 1.1 mm is preferable.
  • the glass substrate 3 of the polarizing plate is subjected to a strengthening treatment, and the strengthening treatment is a chemical tempering treatment or an air-cooling tempering treatment. After strengthening The surface compressive stress value of the glass substrate is greater than 450 MPa.
  • the ball drop test should reach 2J (0.6M/500g) or more, the plane has no S deformation, and the bow deformation is less than 1/100.
  • the tempering method is a glass tempering method well known in the prior art, such as an ion exchange method in chemical tempering.
  • one or more of the anti-reflection vapor-deposited layer, the scratch-resistant vapor-deposited layer, or the antistatic vapor-deposited layer are vapor-deposited.
  • a pattern 8 is printed on the glass substrate 3 or the protective layer film 2.
  • the pattern 8 of the glass substrate 3 is screen printed, and the printing ink is a resin-based ink or an ultraviolet-curable ink or a sintered ceramic ink which is dried in red.
  • the pattern 8 on the protective film 2 is offset.
  • the pattern 8 may be a border of a display screen, a trademark, a function icon, a remote semi-transparent window, or the like, or may be other decorative patterns.
  • the bonding between the layers of the polarizing plate is performed by optical pressure-sensitive adhesive.
  • the glass substrate 3 is disposed on the surface 31 of the light-emitting surface 41 of the liquid crystal cell 4, and is provided with an optical pressure-sensitive adhesive layer 7 and a release protective film 5. .
  • the release protective film 5 can be uncovered, which facilitates the transportation and storage of the polarizing plate.
  • the release protective film 5 is exposed.
  • the optical pressure-sensitive adhesive layer 7 is attached to the light-emitting surface 41 of the liquid crystal cell 4.
  • a film 6 which can be peeled off without leaving any residue can be covered on the light emitting surface of the polarizing plate.
  • Embodiment 1 As shown in FIG. 4, the polarizing plate of the present invention is glued on the light-emitting surface 41 of the liquid crystal cell 4, which comprises a polyvinyl alcohol film 1 and a cellulose triacetate film 2, the cellulose triacetate The film 2 is glued on the light-emitting surface 12 of the polyvinyl alcohol film 1, wherein the polarizing plate further comprises a glass substrate 3 having a thickness of 0.5 mm, and the glass substrate 3 is glued to the light-emitting surface 41 of the polyvinyl alcohol film 1 toward the liquid crystal cell 4. On the face 11. Gluing between the layers is carried out using an optical pressure-sensitive adhesive layer 7. The cellulose triacetate film 2 is offset printed on the face 21 of the light-emitting surface 41 of the liquid crystal cell 4 with a decorative pattern 8 printed thereon.
  • Embodiment 2 As shown in FIG. 4, the polarizing plate of the present invention is glued on the light-emitting surface 41 of the liquid crystal cell 4, which comprises a polyvinyl alcohol film 1 and a polyethylene terephthalate film 2, and the poly The ethylene terephthalate film 2 is glued on the light-emitting surface 12 of the polyvinyl alcohol film 1, wherein the polarizing plate further comprises a glass substrate 3 having a thickness of 2.5 mm, and the glass substrate 3 is glued to the polyvinyl alcohol film 1 It is directed to the face 11 of the light-emitting surface 41 of the liquid crystal cell 4. Gluing between the layers is carried out using an optical pressure-sensitive adhesive layer 7. The polyethylene terephthalate film 2 is offset printed on the face 21 of the light-emitting surface 41 of the liquid crystal cell 4 with a decorative pattern 8.
  • Embodiment 3 As shown in FIG. 5, the polarizing plate of the present invention is glued on the light-emitting surface 41 of the liquid crystal cell 4, which comprises a polyvinyl alcohol film 1 and a cellulose triacetate film 2, the cellulose triacetate The film 2 is glued on the light-emitting surface 12 of the polyvinyl alcohol film 1, wherein the polarizing plate further comprises a glass substrate 3 having a thickness of 0.7 mm, and the glass substrate 3 is glued to the light-emitting surface 41 of the polyvinyl alcohol film 1 toward the liquid crystal cell 4. On the face 11. Gluing between the layers is carried out using an optical pressure-sensitive adhesive layer 7.
  • the cellulose triacetate film 2 is offset printed on the face 21 of the light-emitting surface 41 of the liquid crystal cell 4 with a decorative pattern 8 printed thereon.
  • the light-emitting surface 22 of the cellulose triacetate film 2 is vapor-deposited with an antireflection vapor-deposited layer and a scratch-resistant vapor-deposited layer 9.
  • Embodiment 4 As shown in FIG. 5, the polarizing plate of the present invention is glued on the light-emitting surface 41 of the liquid crystal cell 4, which comprises a polyvinyl alcohol film 1 and a polyethylene terephthalate film 2, and the poly The ethylene terephthalate film 2 is glued on the light-emitting surface 12 of the polyvinyl alcohol film 1, wherein the polarizing plate further comprises a glass substrate 3 having a thickness of 1.1 mm, and the glass substrate 3 is glued to the polyvinyl alcohol film 1 It is directed to the face 11 of the light-emitting surface 41 of the liquid crystal cell 4. Gluing between the layers is carried out using an optical pressure-sensitive adhesive layer 7.
  • the polyethylene terephthalate film 2 is directed toward the liquid crystal cell 4 A decorative pattern 8 is offset printed on the face 21 of the face 41.
  • the light-emitting surface 22 of the polyethylene terephthalate film 2 is vapor-deposited with an antireflection vapor deposition layer, a scratch-resistant vapor deposition layer, and an antistatic vapor deposition layer 9.
  • Embodiment 5 As shown in FIG. 6, the polarizing plate of the present invention is glued on the light-emitting surface 41 of the liquid crystal cell 4, which comprises a polyvinyl alcohol film 1 and a cellulose triacetate film 2, the cellulose triacetate The film 2 is glued on the light-emitting surface 12 of the polyvinyl alcohol film 1, wherein the polarizing plate further comprises a glass substrate 3 having a thickness of 0.55 mm, and the glass substrate 3 is glued to the light-emitting surface 41 of the polyvinyl alcohol film 1 toward the liquid crystal cell 4. On the face 11. Gluing between the layers is carried out using an optical pressure-sensitive adhesive layer 7.
  • the glass substrate 3 is screen-printed with a decorative pattern 8 on the surface 31 of the light-emitting surface 41 of the liquid crystal cell 4.
  • the light-emitting surface 22 of the cellulose triacetate film 2 is vapor-deposited with an antireflection vapor-deposited layer, a scratch-resistant vapor-deposited layer, and an antistatic vapor-deposited layer 9.
  • Embodiment 6 As shown in FIG. 6, the polarizing plate of the present invention is glued on the light-emitting surface 41 of the liquid crystal cell 4, which comprises a polyvinyl alcohol film 1 and a cellulose triacetate film 2, the cellulose triacetate The film 2 is glued on the light-emitting surface 12 of the polyvinyl alcohol film 1, wherein the polarizing plate further comprises a 1.8 mm-thick glass substrate 3 bonded to the light-emitting surface 41 of the polyvinyl alcohol film 1 toward the liquid crystal cell 4. On the face 11. Gluing between the layers is carried out using an optical pressure sensitive adhesive layer 7. The glass substrate 3 is screen printed with a decorative pattern 8 on the surface 31 of the light-emitting surface 41 of the liquid crystal cell 4. The light-reflecting layer 9 is deposited on the light-emitting surface 22 of the cellulose triacetate film 2 described above.
  • Embodiment 7 As shown in FIG. 6, the polarizing plate of the present invention is glued on the light-emitting surface 41 of the liquid crystal cell 4, which comprises a polyvinyl alcohol film 1 and a cellulose triacetate film 2, the cellulose triacetate The film 2 is glued on the light-emitting surface 12 of the polyvinyl alcohol film 1, wherein the polarizing plate further comprises a 0.9 mm-thick glass substrate 3 bonded to the light-emitting surface 41 of the polyvinyl alcohol film 1 toward the liquid crystal cell 4. On the face 11. Gluing between the layers is carried out using an optical pressure sensitive adhesive layer 7. The glass substrate 3 is screen printed with a decorative pattern 8 on the surface 31 of the light-emitting surface 41 of the liquid crystal cell 4. The light-reflecting layer 9 is deposited on the light-emitting surface 22 of the cellulose triacetate film 2 described above.

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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)
  • Polarising Elements (AREA)
  • Liquid Crystal (AREA)

Abstract

A polarizing plate for a liquid crystal screen includes a polyvinyl alcohol film (1) and a protective film (2). The protective film (2) is adhered to the light emitting surface (12) of the polyvinyl alcohol film (1). The polarizing plate also includes a glass substrate (3). The glass substrate (3) is adhered to the surface (11) of the polyvinyl alcohol film (1) facing the light emitting surface (41) of a liquid crystal cell (4), as a protective layer for the surface (11) of the polyvinyl alcohol film (1). The polarizing plate is adhered to the light emitting surface (41) of the liquid crystal cell (4).

Description

一种液晶屏的偏光板 技术领域 本发明涉及一种液晶显示器的组件， 尤其涉及一种偏光板和使用该偏光板的液晶屏。  BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to an assembly of a liquid crystal display, and more particularly to a polarizing plate and a liquid crystal panel using the same.
背景技术 偏光片（polanzer)是液晶显示装置 (LCD)的重要组件之一， 它是一种由多层高分子材料复合 而成的具有产生偏振光功能的光学薄膜。 如图 1所示， 偏光片贴合在液晶盒 4的两面， 分别称之为上偏光 片 01 (或称透射片）和下偏光片 02 (或称反射片）， 其功能是将背光源的光线偏振化。 液晶显示装置通过 改变液晶盒中液晶层的电信号， 使液晶层的液晶分子产生扭转排列形成具有一定扭转角度的光通道， 偏振 光通过光通道时， 其导通量和截止量受到控制， 从而呈现出色彩鲜明的画面。 Background Art A polanzer is one of important components of a liquid crystal display device (LCD), and is an optical film having a function of generating polarized light, which is a composite of a plurality of polymer materials. As shown in FIG. 1, the polarizer is attached to both sides of the liquid crystal cell 4, and is referred to as an upper polarizer 01 (or a transmissive film) and a lower polarizer 02 (or a reflective sheet), respectively, and functions as a backlight. Polarization of light. The liquid crystal display device changes the electric signal of the liquid crystal layer in the liquid crystal cell, so that the liquid crystal molecules of the liquid crystal layer are twisted to form an optical channel having a certain twist angle, and when the polarized light passes through the optical channel, the conduction amount and the cutoff amount are controlled, thereby A vivid picture is presented.
目前通用的上偏光片结构是三明治结构， 如图 1所示， 由两层的保护层膜 04、 05和中间一层偏光膜 03组成。 其中， 偏光膜 03为聚乙烯醇材料经过染色拉伸制成， 其性能决定了偏光片的偏光性能、 透过率， 同时也是影响偏光片色调和光学耐久性。 由于聚乙烯醇制成的偏光膜 03 易吸水、 褪色而丧失偏光性能， 因此需要在其两边各使用一层光学均匀性和透明性良好的保护层膜 04、 05来隔绝水分和空气并保护偏光 膜， 所述的保护层膜 04、 05—般使用三醋酸纤维素酯 （TAC) 膜。 若采用具有紫外隔离 （UV CUT) 和防 眩（Anti-Glare)功能的保护层膜可制成防紫外型偏光片和防眩型偏光片。将偏光片贴合在液晶盒 4的玻璃 面上 41便形成了液晶显示器装置。  The conventional upper polarizer structure is a sandwich structure, as shown in Fig. 1, consisting of two layers of protective film 04, 05 and an intermediate polarizing film 03. Among them, the polarizing film 03 is made by dyeing and stretching a polyvinyl alcohol material, and its performance determines the polarizing performance and transmittance of the polarizer, and also affects the color tone and optical durability of the polarizer. Since the polarizing film 03 made of polyvinyl alcohol is easy to absorb water and fade, and loses the polarizing property, it is necessary to use a protective film 04, 05 having good optical uniformity and transparency on both sides to isolate moisture and air and protect the polarized light. Membrane, the protective layer films 04, 05 generally use a cellulose triacetate (TAC) film. Anti-UV polarizers and anti-glare polarizers can be made by using a protective film with UV CUT and Anti-Glare. The liquid crystal display device is formed by laminating the polarizer on the glass surface of the liquid crystal cell 4.
随着各种液晶显示装置， 特别是大屏幕液晶电视的运用越来越广泛， 人们对液晶屏提出了越来越高的 技术要求、 视觉美感要求以及成本要求， 例如外观方面要求结构超薄化、 无框化、 屏面华丽光亮； 在实用 性方面要求抗潮湿和抗冲击； 在光学特性方面要求提高对比度， 减少光通量损失； 随着液晶显示装置上三 维技术的运用， 液晶屏还需要能够表现影像画面的深度层次效果； 另一方面， 人们要求液晶屏的制造成本 越来越低。 偏光片作为液晶屏中重要的组成部分， 尤其是上偏光片直接关系到液晶屏的相关性能。 现有技 术中的偏光片不能完全满足这些技术要求， 具体表现为：  With the increasing use of various liquid crystal display devices, especially large-screen LCD TVs, people are demanding higher and higher technical requirements, visual aesthetic requirements, and cost requirements for liquid crystal panels. For example, the appearance requires an ultra-thin structure. No frame, gorgeous screen; Resistant to moisture and impact resistance in practical aspects; Increased contrast and reduced luminous flux loss in optical characteristics; With the use of 3D technology on liquid crystal display devices, LCD screens need to be able to perform The depth level effect of the image frame; on the other hand, the manufacturing cost of the liquid crystal panel is required to be lower and lower. Polarizers are an important part of the LCD screen, especially the upper polarizer is directly related to the performance of the LCD screen. The prior art polarizers do not fully meet these technical requirements, as follows:
1、 若以三醋酸纤维素酯膜作为保护层膜的偏光片， 由于保护层膜仍然有一定的湿气渗透性 （渗透率 约为 300g/m2/day)， 在高温高湿的情况下其保护能力略为不足； 1. If the cellulose triacetate film is used as the polarizer of the protective layer film, the protective film still has a certain moisture permeability (permeability is about 300 g/m 2 /day), in the case of high temperature and high humidity. Its protection capacity is slightly insufficient;
2、保护层膜的表面抗划伤能力在涂布了一层抗划伤涂层（hard coat layer)后， 理论上能达到最高 3H， 但由于偏光片是柔性材料， 厚度一般为 300μ左右， 直接贴附于脆弱的液晶盒的玻璃面上， 偏光片没有足 够的刚性来实现强度更高的抗划伤要求；  2. The surface scratch resistance of the protective film is theoretically up to 3H after being coated with a hard coat layer. However, since the polarizer is a flexible material, the thickness is generally about 300μ. Directly attached to the glass surface of a fragile liquid crystal cell, the polarizer does not have sufficient rigidity to achieve higher scratch resistance requirements;
3、 由于偏光片是由柔性材料组成的， 没有保护液晶盒的功能， 当液晶屏受到外力撞击或受压过大时， 液晶盒极易损坏；  3. Since the polarizer is composed of a flexible material, it does not have the function of protecting the liquid crystal cell. When the liquid crystal panel is subjected to an external force or is under excessive pressure, the liquid crystal cell is easily damaged;
4、 如图 2所示， 为了防止外界光干扰， 偏光片的保护层膜 04的出光面通常采用麻面处理以达到防眩 效果 （Anti-Glare)。 这种麻面处理具有两面性， 虽然达到了分散外界干扰光的目的， 但同时也对液晶盒发 出的光产生了分散作用， 降低了液晶屏的对比度性能。 目前已经有针对显示器外观结构和安全性方面改进的"硬屏"技术开始运用， 实现了诸如显示器表面无 框、 华丽且抗冲击等特性。 如图 3所示， 这种硬屏 09仅仅只是在原有的液晶屏上增加了一层高透硬质材 料 06， 如有机玻璃（亚克力板）、 印刷黑框玻璃等， 高透硬质材料 06的两个面上需要贴附上保护层膜 07， 这种相对独立添加的硬屏 09并没有涉及到由偏光片组合的液晶屏的基本结构。 由于该硬屏 09与液晶屏之 间存在缝隙， 液晶屏发出的偏振光在缝隙处会产生二次折射和内反射， 从而直接影响显示画面的质量。 作 为一种改进， 在该 硬屏 09和液晶屏的偏光片 01之间注入导光树脂 08， 这种方法解决了采用这种"硬屏" 带来的二次折射的弊病， 但却增加了制造工艺难度和成本。 4. As shown in FIG. 2, in order to prevent external light interference, the light-emitting surface of the protective layer film 04 of the polarizer is usually treated with a pitting surface to achieve an anti-glare effect (Anti-Gl are ). This pitting treatment has two-sidedness, and although it achieves the purpose of dispersing external disturbance light, it also disperses the light emitted from the liquid crystal cell, and lowers the contrast performance of the liquid crystal panel. At present, "hard screen" technology for improving the appearance and safety of the display has been put into use, and features such as frameless, gorgeous and impact resistant are realized. As shown in Figure 3, this hard screen 09 only adds a layer of high-permeability hard material 06 to the original LCD screen, such as plexiglass (acrylic sheet), printed black-framed glass, etc., high-permeability hard material 06 The protective film 19 is attached to both sides, and the relatively independently added hard screen 09 does not relate to the basic structure of the liquid crystal panel combined by the polarizer. Due to the gap between the hard screen 09 and the liquid crystal screen, the polarized light emitted by the liquid crystal screen generates secondary refraction and internal reflection at the slit, thereby directly affecting the quality of the display screen. As an improvement, the light guiding resin 08 is injected between the hard screen 09 and the polarizer 01 of the liquid crystal panel. This method solves the disadvantage of using the "hard screen" to cause secondary refraction, but increases the number of Manufacturing process difficulty and cost.
发明内容 本发明的目的是提供一种具有透射型偏光功能、 亮度增透功能、 减反射功能、 抗冲撞击保护 功能、 整机结构超薄平面装饰功能的偏光板。 SUMMARY OF THE INVENTION An object of the present invention is to provide a polarizing plate having a transmissive polarizing function, a brightness increasing function, an anti-reflection function, an impact-resistant protection function, and an ultra-thin planar decorative function of a whole structure.
为实现上述目的， 本发明的偏光板胶合在液晶盒的出光面上， 其包括聚乙烯醇膜和保护层膜， 所述的 保护层膜胶合在聚乙烯醇膜的出光面上， 其中， 偏光板还包括玻璃基板， 该玻璃基板胶合在聚乙烯醇膜靠 向液晶盒的出光面的面上， 作为聚乙烯醇膜另一面的保护层。  In order to achieve the above object, the polarizing plate of the present invention is glued on the light-emitting surface of the liquid crystal cell, which comprises a polyvinyl alcohol film and a protective layer film, and the protective layer film is glued on the light-emitting surface of the polyvinyl alcohol film, wherein, the polarizing light The plate further includes a glass substrate glued to the surface of the polyvinyl alcohol film facing the light-emitting surface of the liquid crystal cell as a protective layer on the other side of the polyvinyl alcohol film.
采用以上结构， 与现有技术相比， 具有以下优势：  With the above structure, compared with the prior art, it has the following advantages:
1、由于偏光板使用玻璃基板作为组成部分，提高液晶屏抗外部冲击和压力的能力，与现有技术中的"硬 屏"相比， 在保证硬度的同时有效地缩小了液晶屏的厚度；  1. Since the polarizing plate uses a glass substrate as a component to improve the ability of the liquid crystal panel to resist external impact and pressure, compared with the "hard screen" in the prior art, the thickness of the liquid crystal screen is effectively reduced while ensuring the hardness;
2、 玻璃基板的湿气渗透率小， 即使在高温高压的环境下， 也能对聚乙烯醇膜起到有效地保护； 2. The moisture permeability of the glass substrate is small, and the polyvinyl alcohol film can be effectively protected even in a high temperature and high pressure environment;
3、 由于偏光片各层都十分的轻薄且已经到达足够的强度， 使用该偏光板的液晶显示装置可以采用无 框化结构设计； 3. Since the layers of the polarizer are very thin and have reached sufficient strength, the liquid crystal display device using the polarizer can be designed with a frameless structure;
4、 出射光线通过硬屏偏光片中玻璃基板的折射作用， 使得液晶显示装置的水平可视角度扩大； 4. The emitted light passes through the refraction of the glass substrate in the hard-screen polarizer, so that the horizontal viewing angle of the liquid crystal display device is expanded;
5、 由于玻璃基板的内反射特性， 有效地改善了影像画面的深度层次感效果， 为三维技术更充分的利 用创造了条件； 5. Due to the internal reflection characteristics of the glass substrate, the depth layering effect of the image frame is effectively improved, and conditions for the fuller use of the three-dimensional technology are created;
6、该偏光板不但集多种功能为一体的结构，其制作综合成本相对于现有技术中的"硬屏"加液晶屏的结 构降低了许多。  6. The polarizing plate not only integrates a plurality of functions into one structure, but the overall cost of manufacturing is much lower than that of the "hard screen" plus liquid crystal screen in the prior art.
本发明的保护层膜为高透明度的三醋酸纤维素酯膜或聚对苯二甲酸乙二醇酯膜。保护层膜可以选用现 有技术中用于制作液晶屏偏光片保护层膜的各种材料， 其中优选三醋酸纤维素酯膜和聚对苯二甲酸乙二醇 酯膜。  The protective layer film of the present invention is a highly transparent cellulose triacetate film or a polyethylene terephthalate film. As the protective layer film, various materials which are used in the prior art for producing a protective film for a liquid crystal panel polarizer can be used, and among them, a cellulose triacetate film and a polyethylene terephthalate film are preferable.
偏光板的玻璃基板为厚度 0.5毫米至 2.5毫米的平板玻璃。 其中， 优选厚度为 0.7毫米至 1.1毫米的平 板玻璃。 这种厚度的平板玻璃兼具足够的柔韧性和物理强度， 便于对偏光板与液晶盒出光面进行相关的胶 合施工处理和加工。  The glass substrate of the polarizing plate is a flat glass having a thickness of 0.5 mm to 2.5 mm. Among them, a flat glass having a thickness of 0.7 mm to 1.1 mm is preferable. The flat glass of this thickness has sufficient flexibility and physical strength to facilitate the related bonding construction and processing of the polarizing plate and the light-emitting surface of the liquid crystal cell.
偏光板的玻璃基板采用强化处理， 所述的强化处理为化学钢化处理或风冷钢化处理。 钢化后玻璃基板 的表面压应力值大于 450Mpa。 所述的钢化方法均为现有技术中公知的玻璃钢化方法， 如化学钢化中的离 子交换法等。 钢化后的玻璃基板能够为液晶屏提供更高的使用强度。 The glass substrate of the polarizing plate is subjected to a strengthening treatment, and the strengthening treatment is a chemical tempering treatment or an air-cooling tempering treatment. The surface compressive stress value of the tempered glass substrate is greater than 450 MPa. The tempering method is a glass tempering method well known in the prior art, such as separation in chemical tempering. Sub-exchange method, etc. The tempered glass substrate can provide a higher use strength for the liquid crystal panel.
偏光板的保护层膜的出光面上蒸镀有增透蒸镀层、 抗划伤蒸镀层或防静电蒸镀层中的一种以上镀层。 增透蒸镀层具有增透功能， 从而提高了液晶屏的光学对比度性能。 抗划伤蒸镀层进一步提高了液晶屏表面 的抗划伤能力。 防静电蒸镀层可以有效减少偏光板的表面携带的静电荷。  One or more plating layers of the antireflection vapor deposition layer, the scratch resistant vapor deposition layer, or the antistatic vapor deposition layer are deposited on the light-emitting surface of the protective layer film of the polarizing plate. The anti-reflection coating has an anti-reflection function, thereby improving the optical contrast performance of the liquid crystal panel. The scratch-resistant vapor deposition layer further improves the scratch resistance of the surface of the liquid crystal panel. The antistatic evaporation layer can effectively reduce the static charge carried on the surface of the polarizing plate.
偏光板在其中的玻璃基板或保护层膜面上印刷有图案， 玻璃基板的图案采用丝网印刷， 印刷油墨为红 外烘干的树脂型油墨或紫外光固型油墨或者烧结型陶瓷油墨。 保护层膜上的图案采用胶印。 所述的图案可 以是显示屏的边框、 商标、 功能图标、遥控半透窗口等， 也可以是其他装饰性图案， 采用多样化图案设计， 可满足各制造商和消费者的不同外观要求。  The polarizing plate has a pattern printed on the surface of the glass substrate or the protective layer film, and the pattern of the glass substrate is screen printed, and the printing ink is a resin-based ink or an ultraviolet-curable ink or a sintered ceramic ink which is dried in red. The pattern on the cover film is offset. The pattern may be a border of a display screen, a trademark, a function icon, a remote semi-transparent window, or the like, or may be other decorative patterns, and adopt various patterns to meet different appearance requirements of various manufacturers and consumers.
偏光板的各层膜之间的胶合采用光学压敏胶胶合， 所述的玻璃基板靠向液晶盒的出光面的面上设有光 学压敏胶层和离型保护膜。 偏光板制造完成后， 离型保护膜可以不揭开， 便于偏光板的运输和储存， 当需 要将偏光板胶合到液晶盒的出光面上时， 再揭去离型保护膜露出光学压敏胶层， 对正液晶盒的出光面进行 安装。  The bonding between the layers of the polarizing plate is glued by an optical pressure sensitive adhesive, and the glass substrate is provided with an optical pressure sensitive adhesive layer and a release protective film on the surface of the light emitting surface of the liquid crystal cell. After the polarizing plate is manufactured, the release protective film can be uncovered, which facilitates the transportation and storage of the polarizing plate. When the polarizing plate needs to be glued to the light emitting surface of the liquid crystal cell, the release protective film is exposed to expose the optical pressure sensitive adhesive. Layer, install the light-emitting surface of the positive liquid crystal cell.
综上所述， 本发明的偏光板集合了偏光功能、 亮度增透功能、 减反射功能、 抗冲撞击保护功能、 整机 结构超薄平面装饰功能等多种功能于一体， 替代传统的柔性偏光片， 本发明解决了传统柔性偏光片不能克 服的对比度损失、 安全保护性差、 无装饰效果、 液晶屏结构必须抱框等缺陷。  In summary, the polarizing plate of the present invention integrates various functions such as a polarizing function, a brightness enhancement function, an anti-reflection function, an impact impact protection function, and an ultra-thin planar decorative function of the whole structure, and replaces the traditional flexible polarized light. The invention solves the defects that the conventional flexible polarizer can not overcome the contrast loss, the poor safety protection, the no decorative effect, the frame structure must hold the frame and the like.
附图说明 下面结合附图和具体实施方式对本发明作进一步详细的说明： BRIEF DESCRIPTION OF THE DRAWINGS The invention will be further described in detail below with reference to the drawings and specific embodiments:
图 1为现有技术中液晶屏的结构示意图；  1 is a schematic structural view of a liquid crystal panel in the prior art;
图 2为现有技术中偏光片的保护层膜采用麻面的出射光路图；  2 is an exiting optical path diagram of a protective layer film of a polarizer in the prior art using a pockmark;
图 3为现有技术中硬屏的结构图；  3 is a structural diagram of a hard screen in the prior art;
图 4为本发明的偏光板的实施例 1和 2的结构示意图；  Figure 4 is a schematic view showing the structure of Embodiments 1 and 2 of the polarizing plate of the present invention;
图 5为本发明的偏光板的实施例 3和 4的结构示意图；  Figure 5 is a schematic view showing the structure of Embodiments 3 and 4 of the polarizing plate of the present invention;
图 6为本发明的偏光板的实施例 5至 7的结构示意图。  Figure 6 is a schematic view showing the structure of Embodiments 5 to 7 of the polarizing plate of the present invention.
具体实施方式 如图 4至 6所示， 本发明的偏光板胶合在液晶盒 4的出光面 41上， 其包括聚乙烯醇膜 1 和保护层膜 2， 所述的保护层膜 2胶合在聚乙烯醇膜 1的出光面 12上， 其中， 偏光板还包括玻璃基板 3， 该玻璃基板 3胶合在聚乙烯醇膜 1靠向液晶盒 4的出光面 41的面 11上， 作为聚乙烯醇膜 1另一面的保护 层。 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 4 to 6, a polarizing plate of the present invention is bonded to a light-emitting surface 41 of a liquid crystal cell 4, which comprises a polyvinyl alcohol film 1 and a protective film 2, and the protective film 2 is glued together. On the light-emitting surface 12 of the vinyl alcohol film 1, the polarizing plate further includes a glass substrate 3 which is bonded to the surface 11 of the polyvinyl alcohol film 1 facing the light-emitting surface 41 of the liquid crystal cell 4 as a polyvinyl alcohol film. 1 The other side of the protective layer.
保护层膜 2可以选用现有技术中用于制作液晶屏偏光片保护层膜的各种材料， 其中优选三醋酸纤维素 酯膜和聚对苯二甲酸乙二醇酯膜。  As the protective layer film 2, various materials which are used in the prior art for producing a protective film for a liquid crystal panel polarizer can be used, and among them, a cellulose triacetate film and a polyethylene terephthalate film are preferable.
偏光板的玻璃基板 3为厚度 0.5毫米至 2.5毫米的平板玻璃。 其中， 优选厚度为 0.7毫米至 1.1毫米的 平板玻璃。  The glass substrate 3 of the polarizing plate is a flat glass having a thickness of 0.5 mm to 2.5 mm. Among them, flat glass having a thickness of 0.7 mm to 1.1 mm is preferable.
所述的偏光板的玻璃基板 3采用强化处理， 所述的强化处理为化学钢化处理或风冷钢化处理。 强化后 玻璃基板的表面压应力值大于 450Mpa。 落球不破测试应达到 2J ( 0.6M/500g) 以上， 平面无 S变形， 弓形 变形小于 1/100。 所述的钢化方法均为现有技术中公知的玻璃钢化方法， 如化学钢化中的离子交换法等。 The glass substrate 3 of the polarizing plate is subjected to a strengthening treatment, and the strengthening treatment is a chemical tempering treatment or an air-cooling tempering treatment. After strengthening The surface compressive stress value of the glass substrate is greater than 450 MPa. The ball drop test should reach 2J (0.6M/500g) or more, the plane has no S deformation, and the bow deformation is less than 1/100. The tempering method is a glass tempering method well known in the prior art, such as an ion exchange method in chemical tempering.
硬屏偏光板的保护层膜 2的出光面 22上蒸镀有增透蒸镀层、 抗划伤蒸镀层或防静电蒸镀层中的一种 以上镀层 9。  On the light-emitting surface 22 of the protective layer film 2 of the hard-shield polarizing plate, one or more of the anti-reflection vapor-deposited layer, the scratch-resistant vapor-deposited layer, or the antistatic vapor-deposited layer are vapor-deposited.
所述的玻璃基板 3或保护层膜 2上印刷有图案 8。 玻璃基板 3的图案 8采用丝网印刷， 印刷油墨为红 外烘干的树脂型油墨或紫外光固型油墨或者烧结型陶瓷油墨。 保护层膜 2上的图案 8采用胶印。 所述的图 案 8可以是显示屏的边框、 商标、 功能图标、 遥控半透窗口等， 也可以是其他装饰性图案。  A pattern 8 is printed on the glass substrate 3 or the protective layer film 2. The pattern 8 of the glass substrate 3 is screen printed, and the printing ink is a resin-based ink or an ultraviolet-curable ink or a sintered ceramic ink which is dried in red. The pattern 8 on the protective film 2 is offset. The pattern 8 may be a border of a display screen, a trademark, a function icon, a remote semi-transparent window, or the like, or may be other decorative patterns.
偏光板的各层膜之间的胶合采用光学压敏胶胶合， 所述的玻璃基板 3靠向液晶盒 4的出光面 41的面 31上设有光学压敏胶层 7和离型保护膜 5。 偏光板制造完成后， 离型保护膜 5可以不揭开， 便于偏光板的 运输和储存，当需要将偏光板胶合到液晶盒 4的出光面 41上时，再揭去离型保护膜 5露出光学压敏胶层 7， 对正液晶盒 4的出光面 41进行安装。  The bonding between the layers of the polarizing plate is performed by optical pressure-sensitive adhesive. The glass substrate 3 is disposed on the surface 31 of the light-emitting surface 41 of the liquid crystal cell 4, and is provided with an optical pressure-sensitive adhesive layer 7 and a release protective film 5. . After the polarizing plate is manufactured, the release protective film 5 can be uncovered, which facilitates the transportation and storage of the polarizing plate. When the polarizing plate needs to be glued to the light-emitting surface 41 of the liquid crystal cell 4, the release protective film 5 is exposed. The optical pressure-sensitive adhesive layer 7 is attached to the light-emitting surface 41 of the liquid crystal cell 4.
偏光板制作完成后， 可以在偏光板的出光面上覆盖一层可揭开剥离且不留残迹的薄膜 6。  After the polarizing plate is fabricated, a film 6 which can be peeled off without leaving any residue can be covered on the light emitting surface of the polarizing plate.
实施例 1 : 如图 4所示， 本发明的偏光板胶合在液晶盒 4的出光面 41上， 其包括聚乙烯醇膜 1和三醋 酸纤维素酯膜 2， 所述的三醋酸纤维素酯膜 2胶合在聚乙烯醇膜 1的出光面 12上， 其中， 偏光板还包括一 片 0.5毫米厚度的玻璃基板 3， 该玻璃基板 3胶合在聚乙烯醇膜 1靠向液晶盒 4的出光面 41的面 11上。 各层之间的胶合采用光学压敏胶层 7进行。三醋酸纤维素酯膜 2靠向液晶盒 4的出光面 41的面 21上胶印 印刷有装饰性图案 8。  Embodiment 1: As shown in FIG. 4, the polarizing plate of the present invention is glued on the light-emitting surface 41 of the liquid crystal cell 4, which comprises a polyvinyl alcohol film 1 and a cellulose triacetate film 2, the cellulose triacetate The film 2 is glued on the light-emitting surface 12 of the polyvinyl alcohol film 1, wherein the polarizing plate further comprises a glass substrate 3 having a thickness of 0.5 mm, and the glass substrate 3 is glued to the light-emitting surface 41 of the polyvinyl alcohol film 1 toward the liquid crystal cell 4. On the face 11. Gluing between the layers is carried out using an optical pressure-sensitive adhesive layer 7. The cellulose triacetate film 2 is offset printed on the face 21 of the light-emitting surface 41 of the liquid crystal cell 4 with a decorative pattern 8 printed thereon.
实施例 2: 如图 4所示， 本发明的偏光板胶合在液晶盒 4的出光面 41上， 其包括聚乙烯醇膜 1和聚对 苯二甲酸乙二醇酯膜 2， 所述的聚对苯二甲酸乙二醇酯膜 2胶合在聚乙烯醇膜 1的出光面 12上， 其中， 偏 光板还包括一片 2.5毫米厚度的玻璃基板 3， 该玻璃基板 3胶合在聚乙烯醇膜 1靠向液晶盒 4的出光面 41 的面 11上。 各层之间的胶合采用光学压敏胶层 7进行。 聚对苯二甲酸乙二醇酯膜 2靠向液晶盒 4的出光 面 41的面 21上胶印印刷有装饰性图案 8。  Embodiment 2: As shown in FIG. 4, the polarizing plate of the present invention is glued on the light-emitting surface 41 of the liquid crystal cell 4, which comprises a polyvinyl alcohol film 1 and a polyethylene terephthalate film 2, and the poly The ethylene terephthalate film 2 is glued on the light-emitting surface 12 of the polyvinyl alcohol film 1, wherein the polarizing plate further comprises a glass substrate 3 having a thickness of 2.5 mm, and the glass substrate 3 is glued to the polyvinyl alcohol film 1 It is directed to the face 11 of the light-emitting surface 41 of the liquid crystal cell 4. Gluing between the layers is carried out using an optical pressure-sensitive adhesive layer 7. The polyethylene terephthalate film 2 is offset printed on the face 21 of the light-emitting surface 41 of the liquid crystal cell 4 with a decorative pattern 8.
实施例 3: 如图 5所示， 本发明的偏光板胶合在液晶盒 4的出光面 41上， 其包括聚乙烯醇膜 1和三醋 酸纤维素酯膜 2， 所述的三醋酸纤维素酯膜 2胶合在聚乙烯醇膜 1的出光面 12上， 其中， 偏光板还包括一 片 0.7毫米厚度的玻璃基板 3， 该玻璃基板 3胶合在聚乙烯醇膜 1靠向液晶盒 4的出光面 41的面 11上。 各层之间的胶合采用光学压敏胶层 7进行。三醋酸纤维素酯膜 2靠向液晶盒 4的出光面 41的面 21上胶印 印刷有装饰性图案 8。 所述的三醋酸纤维素酯膜 2的出光面 22上蒸镀有增透蒸镀层和抗划伤蒸镀层 9。  Embodiment 3: As shown in FIG. 5, the polarizing plate of the present invention is glued on the light-emitting surface 41 of the liquid crystal cell 4, which comprises a polyvinyl alcohol film 1 and a cellulose triacetate film 2, the cellulose triacetate The film 2 is glued on the light-emitting surface 12 of the polyvinyl alcohol film 1, wherein the polarizing plate further comprises a glass substrate 3 having a thickness of 0.7 mm, and the glass substrate 3 is glued to the light-emitting surface 41 of the polyvinyl alcohol film 1 toward the liquid crystal cell 4. On the face 11. Gluing between the layers is carried out using an optical pressure-sensitive adhesive layer 7. The cellulose triacetate film 2 is offset printed on the face 21 of the light-emitting surface 41 of the liquid crystal cell 4 with a decorative pattern 8 printed thereon. The light-emitting surface 22 of the cellulose triacetate film 2 is vapor-deposited with an antireflection vapor-deposited layer and a scratch-resistant vapor-deposited layer 9.
实施例 4: 如图 5所示， 本发明的偏光板胶合在液晶盒 4的出光面 41上， 其包括聚乙烯醇膜 1和聚对 苯二甲酸乙二醇酯膜 2， 所述的聚对苯二甲酸乙二醇酯膜 2胶合在聚乙烯醇膜 1的出光面 12上， 其中， 偏 光板还包括一片 1.1毫米厚度的玻璃基板 3， 该玻璃基板 3胶合在聚乙烯醇膜 1靠向液晶盒 4的出光面 41 的面 11上。 各层之间的胶合采用光学压敏胶层 7进行。 聚对苯二甲酸乙二醇酯膜 2靠向液晶盒 4的出光 面 41的面 21上胶印印刷有装饰性图案 8。所述的聚对苯二甲酸乙二醇酯膜 2的出光面 22上蒸镀有增透蒸 镀层、 抗划伤蒸镀层和防静电蒸镀层 9。 Embodiment 4: As shown in FIG. 5, the polarizing plate of the present invention is glued on the light-emitting surface 41 of the liquid crystal cell 4, which comprises a polyvinyl alcohol film 1 and a polyethylene terephthalate film 2, and the poly The ethylene terephthalate film 2 is glued on the light-emitting surface 12 of the polyvinyl alcohol film 1, wherein the polarizing plate further comprises a glass substrate 3 having a thickness of 1.1 mm, and the glass substrate 3 is glued to the polyvinyl alcohol film 1 It is directed to the face 11 of the light-emitting surface 41 of the liquid crystal cell 4. Gluing between the layers is carried out using an optical pressure-sensitive adhesive layer 7. The polyethylene terephthalate film 2 is directed toward the liquid crystal cell 4 A decorative pattern 8 is offset printed on the face 21 of the face 41. The light-emitting surface 22 of the polyethylene terephthalate film 2 is vapor-deposited with an antireflection vapor deposition layer, a scratch-resistant vapor deposition layer, and an antistatic vapor deposition layer 9.
实施例 5: 如图 6所示， 本发明的偏光板胶合在液晶盒 4的出光面 41上， 其包括聚乙烯醇膜 1和三醋 酸纤维素酯膜 2， 所述的三醋酸纤维素酯膜 2胶合在聚乙烯醇膜 1的出光面 12上， 其中， 偏光板还包括一 片 0.55毫米厚度的玻璃基板 3， 该玻璃基板 3胶合在聚乙烯醇膜 1靠向液晶盒 4的出光面 41的面 11上。 各层之间的胶合采用光学压敏胶层 7进行。 玻璃基板 3靠向液晶盒 4的出光面 41的面 31上丝网印刷有装 饰性图案 8。所述的三醋酸纤维素酯膜 2的出光面 22上蒸镀有增透蒸镀层、抗划伤蒸镀层和防静电蒸镀层 9。  Embodiment 5: As shown in FIG. 6, the polarizing plate of the present invention is glued on the light-emitting surface 41 of the liquid crystal cell 4, which comprises a polyvinyl alcohol film 1 and a cellulose triacetate film 2, the cellulose triacetate The film 2 is glued on the light-emitting surface 12 of the polyvinyl alcohol film 1, wherein the polarizing plate further comprises a glass substrate 3 having a thickness of 0.55 mm, and the glass substrate 3 is glued to the light-emitting surface 41 of the polyvinyl alcohol film 1 toward the liquid crystal cell 4. On the face 11. Gluing between the layers is carried out using an optical pressure-sensitive adhesive layer 7. The glass substrate 3 is screen-printed with a decorative pattern 8 on the surface 31 of the light-emitting surface 41 of the liquid crystal cell 4. The light-emitting surface 22 of the cellulose triacetate film 2 is vapor-deposited with an antireflection vapor-deposited layer, a scratch-resistant vapor-deposited layer, and an antistatic vapor-deposited layer 9.
实施例 6: 如图 6所示， 本发明的偏光板胶合在液晶盒 4的出光面 41上， 其包括聚乙烯醇膜 1和三醋 酸纤维素酯膜 2， 所述的三醋酸纤维素酯膜 2胶合在聚乙烯醇膜 1的出光面 12上， 其中， 偏光板还包括一 片 1.8毫米厚的玻璃基板 3， 该玻璃基板 3胶合在聚乙烯醇膜 1靠向液晶盒 4的出光面 41的面 11上。 各 层之间的胶合采用光学压敏胶层 7进行。玻璃基板 3靠向液晶盒 4的出光面 41的面 31上丝网印刷有装饰 性图案 8。 所述的三醋酸纤维素酯膜 2的出光面 22上蒸镀有增透蒸镀层 9。  Embodiment 6: As shown in FIG. 6, the polarizing plate of the present invention is glued on the light-emitting surface 41 of the liquid crystal cell 4, which comprises a polyvinyl alcohol film 1 and a cellulose triacetate film 2, the cellulose triacetate The film 2 is glued on the light-emitting surface 12 of the polyvinyl alcohol film 1, wherein the polarizing plate further comprises a 1.8 mm-thick glass substrate 3 bonded to the light-emitting surface 41 of the polyvinyl alcohol film 1 toward the liquid crystal cell 4. On the face 11. Gluing between the layers is carried out using an optical pressure sensitive adhesive layer 7. The glass substrate 3 is screen printed with a decorative pattern 8 on the surface 31 of the light-emitting surface 41 of the liquid crystal cell 4. The light-reflecting layer 9 is deposited on the light-emitting surface 22 of the cellulose triacetate film 2 described above.
实施例 7: 如图 6所示， 本发明的偏光板胶合在液晶盒 4的出光面 41上， 其包括聚乙烯醇膜 1和三醋 酸纤维素酯膜 2， 所述的三醋酸纤维素酯膜 2胶合在聚乙烯醇膜 1的出光面 12上， 其中， 偏光板还包括一 片 0.9毫米厚的玻璃基板 3， 该玻璃基板 3胶合在聚乙烯醇膜 1靠向液晶盒 4的出光面 41的面 11上。 各 层之间的胶合采用光学压敏胶层 7进行。玻璃基板 3靠向液晶盒 4的出光面 41的面 31上丝网印刷有装饰 性图案 8。 所述的三醋酸纤维素酯膜 2的出光面 22上蒸镀有增透蒸镀层 9。  Embodiment 7: As shown in FIG. 6, the polarizing plate of the present invention is glued on the light-emitting surface 41 of the liquid crystal cell 4, which comprises a polyvinyl alcohol film 1 and a cellulose triacetate film 2, the cellulose triacetate The film 2 is glued on the light-emitting surface 12 of the polyvinyl alcohol film 1, wherein the polarizing plate further comprises a 0.9 mm-thick glass substrate 3 bonded to the light-emitting surface 41 of the polyvinyl alcohol film 1 toward the liquid crystal cell 4. On the face 11. Gluing between the layers is carried out using an optical pressure sensitive adhesive layer 7. The glass substrate 3 is screen printed with a decorative pattern 8 on the surface 31 of the light-emitting surface 41 of the liquid crystal cell 4. The light-reflecting layer 9 is deposited on the light-emitting surface 22 of the cellulose triacetate film 2 described above.

Claims

1、 一种液晶屏的偏光板， 该偏光板胶合在液晶盒的出光面上， 其包括聚乙烯醇膜和保护层膜， 所述 的保护层膜胶合在聚乙烯醇膜的出光面上， 其特征在于： 偏光板还包括玻璃基板， 该玻璃基板胶合在聚乙 烯醇膜靠向液晶盒的出光面的面上。 A polarizing plate for a liquid crystal panel, the polarizing plate being glued on a light-emitting surface of the liquid crystal cell, comprising a polyvinyl alcohol film and a protective layer film, wherein the protective layer film is glued on the light-emitting surface of the polyvinyl alcohol film, The polarizing plate further includes a glass substrate glued on a surface of the polyvinyl alcohol film facing the light emitting surface of the liquid crystal cell.
2、 根据权利要求 1所述的一种液晶屏的偏光板， 其特征在于： 所述的保护层膜为高透明度的三醋酸 纤维素酯膜或聚对苯二甲酸乙二醇酯膜。  The polarizing plate for a liquid crystal panel according to claim 1, wherein the protective layer film is a highly transparent cellulose triacetate film or a polyethylene terephthalate film.
3、 根据权利要求 1或 2所述的一种液晶屏的偏光板， 其特征在于： 所述的保护层膜的出光面上蒸镀 有增透涂层、 抗划伤涂层或防静电蒸镀层中的一种以上镀层。  The polarizing plate for a liquid crystal panel according to claim 1 or 2, wherein: the light-emitting surface of the protective layer film is vapor-deposited with an anti-reflection coating, a scratch-resistant coating or an anti-static steaming. More than one plating in the coating.
4、 根据权利要求 1所述的一种液晶屏的偏光板， 其特征在于： 所述的玻璃基板为厚度 0.5毫米至 2.5 毫米的平板玻璃。  4. A polarizing plate for a liquid crystal panel according to claim 1, wherein: the glass substrate is a flat glass having a thickness of 0.5 mm to 2.5 mm.
5、 根据权利要求 4所述的一种液晶屏的偏光板， 其特征在于： 所述的玻璃基板为厚度 0.7毫米至 1.1 毫米的平板玻璃。  The polarizing plate for a liquid crystal panel according to claim 4, wherein the glass substrate is a flat glass having a thickness of 0.7 mm to 1.1 mm.
6、 根据权利要求 1、 2、 4或 5所述的一种液晶屏的偏光板， 其特征在于： 所述的玻璃基板采用强化 处理， 其表面压应力值大于 450Mpa。  The polarizing plate for a liquid crystal panel according to claim 1, 2, 4 or 5, wherein the glass substrate is reinforced, and the surface compressive stress value is greater than 450 MPa.
7、 根据权利要求 6所述的一种液晶屏的偏光板， 其特征在于： 所述的玻璃基板的强化处理为化学钢 化处理或风冷钢化处理。  The polarizing plate for a liquid crystal panel according to claim 6, wherein the tempering treatment of the glass substrate is chemical tempering or air-cooling tempering.
8、 根据权利要求 1、 2、 4或 5所述的一种液晶屏的偏光板， 其特征在于： 所述的玻璃基板或保护层 膜上印刷有图案。  A polarizing plate for a liquid crystal panel according to claim 1, 2, 4 or 5, wherein: the glass substrate or the protective layer film is printed with a pattern.
9、 根据权利要求 8所述的一种液晶屏的偏光板， 其特征在于： 所述的玻璃基板上的图案采用丝网印 刷， 印刷油墨为红外烘干的树脂型油墨或紫外光固型油墨或烧结型陶瓷油墨， 所述的保护层膜上的图案采 用胶印。  9. The polarizing plate of a liquid crystal panel according to claim 8, wherein: the pattern on the glass substrate is screen printed, and the printing ink is infrared dried resin type ink or ultraviolet light solid ink. Or a sintered ceramic ink, the pattern on the protective layer film is offset.
10、 根据权利要求 8至 9所述的一种液晶屏的偏光板， 其特征在于： 所述的印刷图案是单色印刷或多 色印刷。  A polarizing plate for a liquid crystal panel according to any one of claims 8 to 9, wherein: said printing pattern is monochrome printing or multicolor printing.
11、 根据权利要求 1、 2、 4或 5所述的一种液晶屏的偏光板， 其特征在于： 所述的各层膜之间的胶合 采用光学压敏胶胶合。  A polarizing plate for a liquid crystal panel according to claim 1, 2, 4 or 5, wherein the bonding between the layers of the film is performed by optical pressure sensitive adhesive.
12、 根据权利要求 1所述的一种液晶屏的偏光板， 其特征在于： 所述的玻璃基板靠向液晶盒的出光面 的面上设有光学压敏胶层和离型保护膜。  The polarizing plate for a liquid crystal panel according to claim 1, wherein the glass substrate is provided with an optical pressure-sensitive adhesive layer and a release protective film on a surface facing the light-emitting surface of the liquid crystal cell.
PCT/CN2010/080168 2010-06-18 2010-12-23 Polarizing plate for liquid crystal screen WO2011157037A1 (en)

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