WO2016108632A1 - Module pour dispositif d'affichage à cristaux liquides et dispositif d'affichage à cristaux liquides comportant celui-ci - Google Patents

Module pour dispositif d'affichage à cristaux liquides et dispositif d'affichage à cristaux liquides comportant celui-ci Download PDF

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WO2016108632A1
WO2016108632A1 PCT/KR2015/014500 KR2015014500W WO2016108632A1 WO 2016108632 A1 WO2016108632 A1 WO 2016108632A1 KR 2015014500 W KR2015014500 W KR 2015014500W WO 2016108632 A1 WO2016108632 A1 WO 2016108632A1
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Prior art keywords
liquid crystal
polarizer
crystal display
crystal panel
protective film
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PCT/KR2015/014500
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English (en)
Korean (ko)
Inventor
백일웅
조아라
김한수
신동윤
정해룡
Original Assignee
삼성에스디아이 주식회사
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Priority to CN201580055052.1A priority Critical patent/CN107111177B/zh
Publication of WO2016108632A1 publication Critical patent/WO2016108632A1/fr

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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
    • G02F1/133528—Polarisers
    • 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
    • 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
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • 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
    • 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
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • G02F1/134363—Electrodes characterised by their geometrical arrangement for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS]

Definitions

  • the present invention relates to a liquid crystal display module and a liquid crystal display device including the same.
  • the liquid crystal display device may include a liquid crystal panel, a polarizer and a backlight unit formed on one side and both sides of the liquid crystal panel.
  • the polarizing plate may include a polarizer and a protective film formed on at least one surface of the polarizer.
  • the liquid crystal panel may include a lateral electric field liquid crystal mode.
  • the transverse electric field liquid crystal mode has less depression of the liquid crystal and an excellent viewing angle than the vertical alignment liquid crystal mode. However, in the lateral electric field liquid crystal mode, light leakage occurs in the black mode, and thus the contrast ratio may be low.
  • An object of the present invention is to provide a liquid crystal display module including a liquid crystal panel including a lateral electric field liquid crystal mode and capable of improving front contrast ratio and side contrast ratio.
  • Another object of the present invention is to provide a liquid crystal display module including a liquid crystal panel including a transverse electric field liquid crystal mode, and capable of lowering luminance non-evenness.
  • the liquid crystal display module of the present invention includes a liquid crystal panel, a first polarizing plate formed on an upper surface of the liquid crystal panel and having a hard coating layer formed on an uppermost surface thereof, and a lower surface of the liquid crystal panel and between the liquid crystal panel and the backlight unit. And a second polarizing plate having an anti-reflection layer formed on the bottom thereof, and having a front side of 0 °, a left side relative to the front side, and a right side relative to the front side with respect to the liquid crystal panel, + 70 ° to +
  • the contrast ratio at 80 ° or ⁇ 70 ° to ⁇ 80 ° may be about 250 to about 400, and the luminance uniformity of Equation 1 may be about 15% or less.
  • the liquid crystal display device of the present invention may include the liquid crystal display module.
  • the present invention provides a liquid crystal display module including a liquid crystal panel including a lateral electric field liquid crystal mode and capable of improving front contrast ratio and side contrast ratio.
  • the present invention provides a liquid crystal display module including a liquid crystal panel including a lateral electric field liquid crystal mode, and capable of lowering luminance nonuniformity.
  • FIG. 1 is a cross-sectional view of a module for a liquid crystal display device according to an embodiment of the present invention.
  • the "contrast ratio” refers to the front side as 0 ° for the liquid crystal panel having a width x length (600mmx340mm), the left side with respect to the front side-and the right side with + as the front side.
  • the measurement angle is changed from the left end point of -90 ° to the front end 0 ° to the right end point of + 90 °, respectively, in the black mode and the white mode. Measure the brightness.
  • (maximum value of luminance) / (minimum value of luminance) is the contrast ratio.
  • the left side of the front side is represented by-
  • the right side of the front side by +
  • the left end point is -90 °
  • the right end point is + 90 °.
  • it means an area of -80 ° to -70 ° or any point included in this area, or an area of + 70 ° to + 80 ° or any point included in this area.
  • FIG. 1 is a schematic cross-sectional view of a module for a liquid crystal display according to an exemplary embodiment of the present invention.
  • a liquid crystal display module 100 may include a first polarizing plate 20 having a hard coating layer 50 formed on an uppermost surface thereof, and an anti-reflection layer 60 formed on a lowermost surface thereof.
  • the formed second polarizing plate 30 and the liquid crystal panel 10 may be included.
  • the liquid crystal display module 100 may improve the side contrast ratio and the front contrast ratio.
  • the front contrast ratio is about 1300 to about 1500, and the contrast ratio at the side + 70 ° to + 80 ° or -70 ° to -80 ° may be about 250 to about 400, respectively. In the above range, there may be an effect of improving the front and side contrast ratio.
  • the luminance uniformity of the following Equation 1 is about 15% or less, specifically about 10% to 15%. Can be%. Within this range the viewer may not be able to see the roster and shadows on the liquid crystal panel:
  • Luminance Uniformity (A-B) / A x 100
  • Equation 1 A is the maximum value of the luminance measured for each of the nine intersection points generated by dividing the liquid crystal panel of width x length (600mmx340mm) into 4 horizontal and 4 equal parts, and B is the horizontal x vertical (600 mm x 340 mm).
  • the black mode and the white mode can be obtained by adjusting the luminance measuring device, respectively, and make the liquid crystal panel into the light and dark portions, respectively.
  • Luminance nonuniformity represents the uniformity of luminance. The lower the luminance uniformity, the better the luminance uniformity.
  • the contrast ratio at the side surface of + 70 ° or -70 ° may be about 300 to about 400, and the contrast ratio at about + 75 ° or -75 ° is about 300 to about 350, and the contrast ratio may be about 250 to about 300 at + 80 ° or -80 °.
  • the luminance non-uniformity may also have a lowering effect and a rainbow staining improving effect.
  • the first polarizing plate 20 may be formed on one surface of the liquid crystal panel 10 to emit light incident from the liquid crystal panel 10.
  • the first polarizing plate 20 may include a first protective film 22 formed on the first polarizer 21, an upper surface of the first polarizer 21, and a hard coating layer 50 formed on the upper surface of the first protective film 22. And a second protective film 23 formed on the lower surface of the first polarizer 21.
  • the first polarizer 21 is molecularly aligned in a specific direction and transmits only light in a specific direction when mounted on the liquid crystal display, and may include a polarizer made of a polyvinyl alcohol-based film.
  • the first polarizer 21 may be prepared by dyeing iodine or dichroic dye on a polyvinyl alcohol film and stretching it in a predetermined direction. Specifically, it is prepared through a swelling process, a dyeing step, an stretching step, and a crosslinking step. How to perform each step is commonly known to those skilled in the art.
  • the first polarizer 21 may have a thickness of about 20 ⁇ m to about 60 ⁇ m. In the above range, it can be used in the liquid crystal display device.
  • the first protective film 22 may be formed on the upper surface of the first polarizer 21 to protect the first polarizer 21.
  • the first protective film 22 may be a film made of an optically transparent resin.
  • the resin is a polyester-based, cyclic polyolefin-based, polycarbonate-based, polyether sulfone-based, polysulfone-based, poly-polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polybutylene naphthalate and the like It may include one or more of amide, polyimide, acyclic polyolefin, polyarylate, polyvinyl alcohol, polyvinyl chloride, polyvinylidene chloride.
  • the first protective film 22 may have a thickness of about 1 ⁇ m to about 100 ⁇ m, specifically about 40 ⁇ m to about 90 ⁇ m. It can be used as a protective film for a liquid crystal display device in the above range.
  • the hard coating layer 50 is formed on the uppermost surface of the first polarizing plate 20, and may protect the first protective film 22, the first polarizer 21, and the second protective film 23.
  • the hard coat layer 50 may have a pencil hardness of about 2H to about 3H. Within this range, the first polarizing plate, the liquid crystal panel, and the second polarizing plate can be protected.
  • the hard coating layer 50 may have a refractive index of about 1.46 to about 1.47 and a surface roughness Ra of about 200 nm to about 300 nm. Within this range, the luminance contrast can be improved, and the luminance nonuniformity can be lowered to increase the luminance uniformity.
  • the hard coating layer 50 has the refractive index and the surface roughness to induce scattering of light sequentially passing through the second protective film 23, the first polarizer 21, and the first protective film 22, thereby reducing luminance uniformity. Can be lowered.
  • the hard coat layer 50 may have a reflectance of about 1% to about 5%. In the above range, there may be a viewing angle diffusion effect by the refraction of the transmitted light.
  • the hard coat layer 50 may be made of a composition for a hard coat layer containing an ultraviolet curable monomer, an oligomer thereof or a mixture thereof.
  • the composition for the hard coating layer is a (meth) acrylate monomer, an oligomer thereof or a mixture thereof; And initiators.
  • the composition for the hard coating layer may include 100 parts by weight of the (meth) acrylate-based monomer, an oligomer thereof or a mixture thereof and about 0.01 parts by weight to about 10 parts by weight of the initiator.
  • the hard coat layer 50 may have a thickness of about 3 ⁇ m to about 7 ⁇ m. In the above range, it can be used in the liquid crystal display device.
  • the laminate of the hard coat layer 50 and the first protective film 22 may have a haze of about 0.2% to about 0.3% at a wavelength of 380 nm to 780 nm.
  • the side contrast ratio improvement, the luminance non-uniformity can also implement a lowering effect.
  • the second protective film 23 may be formed on the lower surface of the first polarizer 21 to protect the first polarizer 21.
  • the second protective film 23 may be a film formed of the same or different optically transparent resins as the first protective film 21.
  • the second protective film 23 may have a thickness of about 1 ⁇ m to about 100 ⁇ m, specifically about 40 ⁇ m to about 90 ⁇ m. It can be used as a protective film for a liquid crystal display device in the above range.
  • the second protective film 23 may have the same thickness or different thickness than that of the first protective film.
  • the first polarizing plate 20 may have a light transmittance of about 40% to about 45% and a degree of polarization of about 99.900% to about 99.998% at a wavelength of 380 nm to 780 nm. In the above range, it can be used in the liquid crystal display device.
  • an adhesive layer may be formed on the lower surface of the first polarizing plate to adhere the first polarizing plate to the liquid crystal panel.
  • the pressure-sensitive adhesive layer may be formed of a pressure-sensitive adhesive layer containing a pressure-sensitive resin such as a (meth) acrylic resin, a silicone resin, an epoxy resin, a curing agent, a coupling agent, and the like.
  • an adhesive layer may be formed between the first polarizer and the first protective film and between the first polarizer and the second protective film.
  • the adhesive layer may be formed of a conventional adhesive for polarizing plates.
  • the second polarizing plate 30 may be formed on the other surface of the liquid crystal panel 10 to emit light incident from the backlight unit 40 to the liquid crystal panel 10.
  • the second polarizing plate 30 is the second polarizer 31, the fourth protective film 33 formed on the upper surface of the second polarizer 31, the third protective film 32 formed on the lower surface of the second polarizer 31. ), And an anti-reflection layer 60 formed on the lower surface of the third protective film 32.
  • the second polarizer 31 is molecularly aligned in a specific direction and transmits only light in a specific direction when mounted on the liquid crystal display, and may include a polarizer made of a polyvinyl alcohol-based film.
  • the second polarizer 31 may have a thickness of about 20 ⁇ m to about 60 ⁇ m. In the above range, it can be used in the liquid crystal display device.
  • the second polarizer 31 may be formed of the same or different materials as the first polarizer 21, and may have the same thickness or different thicknesses.
  • the third protective film 32 and the fourth protective film 33 may be formed on one surface and the other surface of the second polarizer 31, respectively, to protect the second polarizer 31.
  • the third protective film 32 and the fourth protective film 33 may each be a film formed of the same or different types of resin as the first protective film 22.
  • Each of the third protective film 32 and the fourth protective film 33 may have a thickness of about 1 ⁇ m to about 100 ⁇ m, specifically about 40 ⁇ m to about 90 ⁇ m. It can be used as a protective film for a liquid crystal display device in the above range.
  • the third protective film 32 and the fourth protective film 33 may have the same or different thicknesses.
  • the anti-reflection layer 60 may be formed on the lower surface of the third protective film 32 and may be positioned between the liquid crystal panel 10 and the backlight unit 40.
  • the luminance non-uniformity can be lowered by preventing the specular reflection of the light emitted from the backlight unit. That is, the light emitted from the backlight unit is partially reflected by the antireflection layer to be directed back to the backlight unit, and the luminance non-uniformity is lowered while forming a light circulation between the top surface of the backlight unit and the antireflection layer.
  • the antireflection layer 60 may have a refractive index of about 1.46 to about 1.48, specifically about 1.47 to about 1.48, and a reflectance of about 5% to about 15%. In the above range, there is an effect of improving the front and side contrast ratio, the brightness non-evenness can be lowered.
  • the antireflection layer 60 may have a thickness of about 1 ⁇ m to about 10 ⁇ m, specifically about 3 ⁇ m to about 8 ⁇ m. It can be used in the liquid crystal display device in the above range.
  • the antireflective layer 60 may be made of an antireflective layer composition including an ultraviolet curable monomer, an oligomer thereof, or a mixture thereof.
  • the antireflective layer composition may include a (meth) acrylate monomer, an oligomer thereof, or a mixture thereof, and an initiator.
  • the composition for the antireflection layer may include 100 parts by weight of the (meth) acrylate-based monomer, an oligomer thereof, or a mixture thereof, and about 0.01 parts by weight to about 10 parts by weight of an initiator.
  • the stack of the anti-reflection layer 60 and the third protective film 32 may have a haze of about 20% to about 25%, specifically about 21% to about 25% at a wavelength of 380nm to 780nm. Within this range, it is possible to improve the front contrast ratio and the side contrast ratio, and to lower the luminance nonuniformity.
  • the light transmittance of the second polarizing plate 30 may be about 40% to about 45% at a wavelength of 380 nm to 780 nm, and the degree of polarization may be about 99.900% to about 99.998%.
  • the front and side contrast ratio improvement and the brightness non-uniformity can also be lowered.
  • the difference between the refractive index of the antireflective layer and the refractive index of the hard coat layer may be about 0.005 to about 0.01, and the difference between the reflectance of the antireflective layer and the reflectance of the hard coat layer (reflectance of the antireflective layer- Refractive index of the hard coating layer) may be about 1% to about 15%.
  • the front and side contrast ratio improvement and the brightness non-uniformity can also lower the value.
  • an adhesive layer is formed on the lower surface of the second polarizing plate 30 to adhere the second polarizing plate 30 to the liquid crystal panel 10.
  • the pressure-sensitive adhesive layer may be formed of a pressure-sensitive adhesive layer containing a pressure-sensitive resin such as a (meth) acrylic resin, a silicone resin, an epoxy resin, a curing agent, a coupling agent, and the like.
  • a pressure-sensitive resin such as a (meth) acrylic resin, a silicone resin, an epoxy resin, a curing agent, a coupling agent, and the like.
  • an adhesive layer may be formed between the second polarizer and the third protective film and between the second polarizer and the fourth protective film.
  • the adhesive layer may be formed of a conventional adhesive for polarizing plates.
  • the liquid crystal panel 10 may include a liquid crystal cell layer encapsulated between an upper substrate and a lower substrate (not shown), the upper substrate may be a color filter (CF) substrate, and the lower substrate may be a thin film transistor (TFT) substrate. .
  • the upper substrate and the lower substrate are the same or different, and may be a glass substrate or a plastic substrate.
  • Plastic substrates include plastics such as polyethylene terephthalate (PET), polycarbonate (PC), polyimide (PI), polyethylenenaphthalate (PEN), polyethersulfone (PES), polyarylate (PAR), and cycloolefin copolymer (COC) that can be used in flexible displays.
  • the substrate may be, but the present invention is not limited thereto.
  • the liquid crystal cell layer may include a transverse electric field liquid crystal, specifically, an IPS (In Place Switching) mode liquid crystal.
  • the liquid crystal display according to the exemplary embodiment of the present invention may include a liquid crystal display module according to an exemplary embodiment of the present invention.
  • a polyvinyl alcohol film (VF-PS6000, Japan Kuraray Co., Ltd., thickness: 60 ⁇ m) was stretched three times at 60 ° C., adsorbed with iodine, and stretched 2.5 times in an aqueous boric acid solution at 40 ° C. to prepare a polarizer.
  • the triacetyl cellulose film (80CHCW-KT, TOPPAN, hard coating layer refractive index: 1.465, the surface roughness (Ra) of the hard coating layer: 200 nm to 300 nm, the haze of the triacetyl cellulose film with a hard coating layer formed on one surface of the polarizer) : 0.2% to 0.3%), and a triacetyl cellulose film (ZRD40SL, FUJI Co., Ltd.) was bonded to the other surface of the polarizer to prepare a polarizing plate.
  • a polarizer was prepared in the same manner as in Preparation Example 1.
  • the triacetyl cellulose film having an antireflection layer formed on one surface of the polarizer (AT15W, TOPPAN, refractive index of the antireflection layer: 1.475, of the triacetyl cellulose film having the antireflection layer formed thereon) Haze: 21% to 25%) was bonded, and a triacetyl cellulose film (ZRD40SL, FUJI Co., Ltd.) was bonded to the other surface of the polarizer to prepare a polarizing plate.
  • a polarizer was prepared in the same manner as in Preparation Example 1.
  • a triacetyl cellulose film (TD80ULN, FUJI Co., Ltd.) was attached to one side of the polarizer, and a triacetyl cellulose film (ZRD40SL, FUJI Co., Ltd.) was attached to the other side of the polarizer to prepare a polarizing plate.
  • a polarizer was prepared in the same manner as in Preparation Example 1.
  • a triacetyl cellulose film (TD80ULN, FUJI Co., Ltd.) was attached to one surface of the polarizer, and a triacetyl cellulose film, in which an antireflection layer and a hard coating layer were sequentially formed, was bonded to the other surface of the polarizer, thereby manufacturing a polarizing plate.
  • the polarizing plate of Preparation Example 1 was adhered to the upper surface of the liquid crystal panel in the transverse electric field liquid crystal mode so that the hard coating layer was positioned on the uppermost surface, and the polarizing plate of Preparation Example 2 was attached to the lower surface of the panel so that the antireflection layer was located on the lowermost surface of the panel. .
  • the backlight unit was assembled under the antireflection layer.
  • the polarizing plate of Preparation Example 2 was adhered to the upper surface of the liquid crystal panel in the transverse electric field liquid crystal mode so that the antireflection layer was located on the uppermost surface, and the polarizing plate of Preparation Example 1 was attached to the lower surface of the panel so that the hard coating layer was located on the bottom thereof. .
  • the backlight unit was assembled under the hard coating layer.
  • the polarizing plate of Preparation Example 3 was attached to the upper surface of the liquid crystal panel of the transverse electric field liquid crystal mode, and the polarizing plate of Preparation Example 2 was attached to the lower surface of the panel so that the antireflection layer was located at the lowermost surface.
  • the backlight unit is positioned under the antireflection layer.
  • the polarizing plate of Preparation Example 2 was adhered to the upper surface of the liquid crystal panel in the transverse electric field liquid crystal mode so that the antireflection layer was positioned on the uppermost surface, and the polarizing plate of Preparation Example 3 was attached to the lower surface of the panel.
  • the backlight unit was positioned under the polarizing plate of Preparation Example 3.
  • the polarizing plate of manufacture example 3 was affixed on the liquid crystal panel upper surface of the horizontal direction electric field liquid crystal mode, and the polarizing plate of manufacture example 3 was stuck to the panel lower surface.
  • the backlight unit was positioned under the polarizing plate of Preparation Example 3.
  • the polarizing plate of manufacture example 4 was affixed on the upper surface of the liquid crystal panel of a lateral electric field liquid crystal mode, and the polarizing plate of manufacture example 3 was stuck to the panel lower surface.
  • the backlight unit was positioned under the polarizing plate of Preparation Example 3.
  • Table 2 shows the liquid crystal display device of Examples and Comparative Examples 1 to 5.
  • the polarizing plate formed on the upper surface of the liquid crystal panel was defined as the upper polarizing plate, the lower surface of the liquid crystal panel, and the polarizing plate between the liquid crystal panel and the backlight unit as the lower polarizing plate.
  • Table 2 shows the outermost surface treatment for each polarizer.
  • the luminance and color values of the light and dark portions were measured using SR-3A (Topcon) for the manufactured liquid crystal display device.
  • the luminance and color values were divided into 4 equal parts and 4 equal parts by the position of the panel of width x length (600mmx340mm), and nine points of generated intersections were determined and measured twice.
  • the luminance (cd / (mm) 2 ) of the wrist (black mode) and the dark part (white mode) was measured in the same manner while changing the measurement angle of SR-3A. From this, the contrast ratio was calculated, and the luminance uniformity was calculated according to Equation 1 based on the measured luminance.
  • Front brightness (cd) Front contrast Front color value (x) Front color value (y) list Dark list Dark list Dark list Dark Example 240 0.171 1403 0.317 0.270 0.336 0.265 Comparative Example 1 235 0.184 1277 0.315 0.268 0.335 0.265 Comparative Example 2 242 0.178 1360 0.317 0.269 0.336 0.265 Comparative Example 3 240 0.187 1283 0.316 0.270 0.334 0.266 Comparative Example 4 244 0.183 1333 0.312 0.267 0.327 0.261 Comparative Example 5 240 0.186 1290 0.322 0.276 0.341 0.273
  • the module for the liquid crystal display of the present invention not only improved both the front contrast ratio and the side contrast ratio, but also lowered the luminance non-uniformity of both the light and dark portions, and did not generate rainbow spots. Confirmed.
  • Comparative Examples 1 to 5 in which the liquid crystal display module and the surface treatment configuration of the present invention are different from each other have poor front or side contrast ratios, high luminance nonuniformity, or rainbow spots.

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

Abstract

La présente invention concerne un module pour un dispositif d'affichage à cristaux liquides et un dispositif d'affichage à cristaux liquides comportant celui-ci. Le module pour un dispositif d'affichage à cristaux liquides comprend : un panneau pour un dispositif d'affichage à cristaux liquides ; une première plaque de polarisation qui est formée sur une surface supérieure du panneau pour le dispositif d'affichage à cristaux liquides, où une couche de revêtement dur est formée sur la surface du dessus de celle-ci ; et une deuxième plaque de polarisation qui est formée sur une surface inférieure du panneau pour le dispositif d'affichage à cristaux liquides, et formée entre le panneau pour le dispositif d'affichage à cristaux liquides et une unité de rétroéclairage, où une couche antireflet est formée sur la surface du dessous de celle-ci. Le rapport de contraste d'une surface latérale entre +70° et +80°, ou -70° et -80° est d'environ 250 à 400 lorsque l'avant est à 0° par rapport au panneau à cristaux liquides, la gauche est « - » par rapport à l'avant et la droite est « + » par rapport à l'avant, et le rapport de non-uniformité de la luminance selon la formule 1 est inférieur ou égal à environ 15 %.
PCT/KR2015/014500 2014-12-31 2015-12-30 Module pour dispositif d'affichage à cristaux liquides et dispositif d'affichage à cristaux liquides comportant celui-ci WO2016108632A1 (fr)

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