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WO2020062591A1 - Plaque de polarisation et dispositif d'affichage - Google Patents

Plaque de polarisation et dispositif d'affichage Download PDF

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Publication number
WO2020062591A1
WO2020062591A1 PCT/CN2018/120015 CN2018120015W WO2020062591A1 WO 2020062591 A1 WO2020062591 A1 WO 2020062591A1 CN 2018120015 W CN2018120015 W CN 2018120015W WO 2020062591 A1 WO2020062591 A1 WO 2020062591A1
Authority
WO
WIPO (PCT)
Prior art keywords
refractive index
film
compensation film
light
polarizing plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2018/120015
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English (en)
Chinese (zh)
Inventor
康志聪
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HKC Co Ltd
Chongqing HKC Optoelectronics Technology Co Ltd
Original Assignee
HKC Co Ltd
Chongqing HKC Optoelectronics Technology Co Ltd
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 HKC Co Ltd, Chongqing HKC Optoelectronics Technology Co Ltd filed Critical HKC Co Ltd
Publication of WO2020062591A1 publication Critical patent/WO2020062591A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
    • G02B5/3041—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks
    • 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

Definitions

  • the present application relates to the field of display technology, and in particular, to a polarizing plate and a display device.
  • the display device is generally composed of a backlight module and a display panel placed on the backlight module.
  • the backlight module provides incident light for the display panel.
  • the incident light is usually concentrated and incident on the display panel. Therefore, when viewing the display screen in the frontal direction, It can obtain better display image quality, but when viewing the display screen in the side view direction, the image quality is poor and the color cast is more serious, which makes the viewing angle of normal display smaller.
  • a sub-pixel in a filter is again divided into a plurality of sub-pixels to improve the image quality of a side viewing angle, thereby expanding the viewing angle.
  • this method requires more TFT (Thin Film Transistor) elements to drive the sub-pixels. This will inevitably increase the metal traces inside the panel, causing the light-transmissive area to become smaller, affecting the light transmittance of the panel and affecting Picture quality.
  • TFT Thin Film Transistor
  • a polarizing plate capable of improving a display angle of a display device with a small display angle and poor side-view image quality, without increasing cost, is provided.
  • a display device is provided.
  • a polarizing plate includes:
  • An optical compensation film is formed on the light emitting surface, the optical compensation film has a second refractive index, the first refractive index is greater than the second refractive index, and the optical compensation film is in contact with the support and protection film
  • a plurality of grooves having the same shape and size as the convex structure are formed on the surface;
  • a polarizing film is provided on the optical compensation film.
  • a polarizing plate includes:
  • a support protective film having a first refractive index, the support protective film having a light incident surface and a light emitting surface, and a plurality of convex structures having a preset shape are provided on the light emitting surface, and the convex At least part of the surface of the lifting structure is a circular arc surface, and an angle formed by the circular arc surface and the light incident surface is an acute angle;
  • An optical compensation film is formed on the light emitting surface, the optical compensation film has a second refractive index, the first refractive index is greater than the second refractive index, and the optical compensation film is in contact with the support and protection film
  • a plurality of grooves having the same shape and size as the convex structure are formed on the surface;
  • the optical compensation film is a positive single optical axis A-compensation film
  • the first refractive index is a normal refractive index of the positive single optical axis A-compensation film
  • the positive single optical axis A-compensation film Containing nematic liquid crystal molecules, the optical axis of the nematic liquid crystal molecules is parallel to the light incident surface
  • a polarizing film is provided on the optical compensation film.
  • a display device includes:
  • Backlight module for providing light source
  • the display panel includes a polarizing plate, and the polarizing plate includes:
  • An optical compensation film is formed on the light emitting surface, the optical compensation film has a second refractive index, the first refractive index is greater than the second refractive index, and the optical compensation film is in contact with the support and protection film
  • a plurality of grooves having the same shape and size as the convex structure are formed on the surface;
  • a polarizing film is provided on the optical compensation film.
  • the polarizing plate and the display device are provided with a supporting protective film and an optical compensation film, and the first refractive index is greater than the second refractive index, that is, light enters the supporting protective film from the light incident surface of the supporting protective film and penetrates the supporting protective film.
  • the film enters the optical compensation film it enters the optical dense from the light dense, so the phenomenon of refraction occurs at the contact interface between the two films, which deflects the light. Since most light rays are incident perpendicularly to the light incident surface in the liquid crystal display device, in the exemplary technology, the surface of each layer of the polarizing plate is flat and perpendicular to the normal incident light, so most of the incident light is incident perpendicularly to the polarized light.
  • a convex structure is formed on the light-emitting surface of the supporting protective film. At least part of the surface of the convex structure forms an acute angle with the light-entering surface. After incident light enters the supporting protective film, it forms on the surface of the convex structure. The angle of incidence is less than 90 °. Therefore, in order to cause refraction, the vertically incident light is deflected, so that the energy of the positive viewing angle is distributed to the side viewing angle, and the image quality of the side viewing angle is improved.
  • the support protective film and optical compensation film also have a phase compensation function, which can correct the phenomenon of phase retardation and color shift after light passes through the liquid crystal layer.
  • FIG. 1 is a schematic diagram of a partial structure of a polarizing plate in an embodiment
  • FIG. 2 is a schematic structural diagram of a supporting protective film in an embodiment
  • 3A is a perspective structural view of a supporting protective film in an embodiment
  • 3B is a schematic perspective view of a supporting protective film in another embodiment
  • 4A is a schematic structural diagram of a supporting protective film in another embodiment
  • FIG. 4B is a schematic perspective view of a supporting protective film in another embodiment
  • 5A is a partial cross-sectional view of a polarizing plate in an embodiment
  • 5B is a partial cross-sectional view of a polarizing plate in another embodiment
  • FIG. 6 is a schematic structural diagram of a polarizing plate in an embodiment
  • FIG. 7 is a schematic structural diagram of a display device according to an embodiment
  • FIG. 8 is a cross-sectional view of the display panel structure in FIG. 7.
  • the polarizing plate 10 may include a support protective film 100, an optical compensation film 200, and a polarizing film 300.
  • the support protective film 100 has a light-entering surface and a light-exiting surface.
  • the light-entering surface is a side that receives incident light. Light enters the support-protective film 100 from the incident surface and exits from the light-exiting surface.
  • the light-exiting surface is provided with a plurality of preset shapes.
  • the convex structure 101 has an angle formed by at least a part of the surface of the convex structure 101 with the light incident surface, ⁇ is an acute angle, and satisfies 0 ° ⁇ ⁇ 90 °.
  • the structure 101 generates a refraction phenomenon.
  • the optical compensation film 200 is formed on the support protective film 100.
  • the optical compensation film 200 is provided with a plurality of grooves 210 having the same shape and size as the convex structure 101 on the surface in contact with the support protective film 100, that is, the optical compensation film 200.
  • the support film 100 can be completely bonded to each other through the protruding structure 101 and the groove 210.
  • the support protective film 100 has a first refractive index n1
  • the optical compensation film 200 has a second refractive index n2
  • the first refractive index n1 is larger than the second refractive index n2.
  • the solution is provided by supporting and protecting the film 100 and the optical compensation film 200 with different refractive indexes and protecting the
  • the light emitting surface of the film 100 is provided with a convex structure 101.
  • the propagation path of light deflects the light, so that the light energy of the positive viewing angle is distributed to the large viewing angle, and the image quality of the side viewing angle is improved.
  • the polarizing plate 10 further includes a polarizing film 300.
  • the polarizing film 300 is used to polarize incident light and emit the polarized light.
  • the polarizing film 300 may be a PVA (Polyvinyl alcohol) material, which mainly absorbs and penetrates polarized light.
  • the polarizing film 300 is a product commonly used in the market.
  • the transmission axis is Products parallel to the 0/180 degree direction and absorption axis parallel to the 90/270 degree direction.
  • the polarizing film 300 can also select that the transmission axis is parallel to the 90/270 degree direction, and the absorption axis is parallel to the 0/180 degree direction.
  • the incident angle of the vertically incident light on the surface of the convex structure is ⁇ , 0 ⁇ ⁇ 90 °, so the light Refraction will occur, and the refraction angle is ⁇ . Since the light enters from the dense to the light, so ⁇ is greater than ⁇ , that is, the light propagation path changes, and the light R1 deviates from the original normal incidence direction and diverges to the side, so there will be more A lot of light enters the side, improving the image quality of the side viewing angle.
  • the value range of the first refractive index n1 is 1.0 ⁇ n1 ⁇ 2.5
  • the value range of the second refractive index n2 is 1.0 ⁇ n1 ⁇ 2.5.
  • the preferred value range of m is 0.01 ⁇ m ⁇ 1.5.
  • a plurality of protruding structures 101 are formed on the light-emitting surface of the supporting protective film 100.
  • the plurality of protruding structures 101 are strip-shaped structures and a part of the surface of the strip-shaped structures is an arc-shaped curved surface. Can be set side by side. It can be understood that a part of the surface referred to herein may be a side of the convex structure 101 opposite to the light emitting surface, that is, an upper surface of the convex structure 101.
  • the angle between the arc-shaped surface and the light incident surface of the supporting protective film 100 may be the angle between the tangent of any point on the surface of the arc-shaped curved surface and the light incident surface.
  • the included angle is an acute angle, that is, ⁇ in FIG. 1, and 0 ° ⁇ ⁇ 90 °.
  • a part of the surface of the convex structure 101 may also be a spherical curved surface. It can be understood that the part of the surface referred to herein may be a side of the convex structure 101 opposite to the light emitting surface, that is, the upper surface of the convex structure 101 .
  • the plurality of convex structures 101 may be distributed in a two-dimensional matrix array on the light emitting surface.
  • the angle between the spherical curved surface and the light incident surface of the support and protection film 100 is the angle between a tangent passing through any point on the surface of the spherical curved surface and the light incident surface.
  • the included angle is an acute angle, that is, ⁇ in FIG. 1, and 0 ° ⁇ ⁇ 90 °. Because in the display device, most of the light generated by the backlight module is incident on the display panel vertically, that is, most of the light incident on the phase compensation film is perpendicular to the light incident surface of the phase compensation film.
  • the curved convex structure 101 since the curved convex structure 101 is provided, it can refract the normal incident light, and the light deviates from the original normal incident direction and diverges to the side. Therefore, more light will enter the side, and the angle of the side view is improved. Picture quality.
  • the upper surface of the convex structure 101 is a circular arc surface and a plurality of convex structures 101 are arranged side by side, refraction occurs only in a one-dimensional direction, so that light is scattered to both sides of the curved surface;
  • the upper surface of the convex structure 101 is When it is a spherical curved surface and a plurality of convex structures 101 are in a two-dimensional matrix array, refraction occurs in a two-dimensional plane, so that light is scattered to various angles of the two-dimensional plane, so that each angle of view can present better image quality.
  • the support protective film 100 may have a light incident surface and a light emitting surface, and the light emitting surface and the light incident surface may be rectangles having the same shape and size, or may have other shapes.
  • the upper surface of the convex structure 101 is a circular arc surface or a spherical surface
  • the radius of the circular arc surface or the spherical surface in the first direction is less than or equal to twice the height of the convex structure 101 in the first direction.
  • the direction is the direction perpendicular to the light emitting surface, which can be understood here as the extending direction along the Y axis.
  • R is the radius of the curved surface in the first direction
  • D is the height of the convex structure 101 in the first direction
  • R ⁇ 2D the relationship between the radius R and the height D
  • the protruding structure 101 is a strip structure
  • its cross-section is a left-right symmetrical structure
  • the second direction is the direction of the extending direction of the vertical strip structure on the light emitting surface
  • the second direction can be understood here It is a direction extending along the X axis.
  • Lx is the length of the strip-like protruding structure in the second direction
  • Px is the center distance of the strip-like protruding structure in the second direction.
  • the convex structure 101 satisfies in the second direction: Px ⁇ Lx and Px ⁇ 10 ⁇ m, and 10 ⁇ m is a wavelength of visible light.
  • Px> Lx there is a gap between adjacent convex structures 101.
  • Px> Lx that is, the convex structures 101 can be arranged at periodic intervals. When light propagates from light dense to light dense, the interval is equivalent to a grating.
  • the convex structure 101 having a spherical curved surface The length in the second direction is Lx, Px is the center distance of the convex structure 101 with a spherical curved surface in the second direction, and Py is the center distance of the convex structure 101 with a spherical curved surface in the third direction.
  • the first direction, the second direction, and the third direction are perpendicular to each other.
  • the first direction can be understood as being along the Y axis.
  • Extension direction the second direction can be understood as the extension direction along the X axis
  • the third direction can be understood as the extension direction along the Z axis.
  • Px, Py, Lx, and Ly satisfy: Px ⁇ Lx and Px ⁇ 10 ⁇ m; Py ⁇ Ly and Py ⁇ 10 ⁇ m; 10 ⁇ m is the general opening size of a pixel.
  • Px> Lx, Py> Ly there are gaps between adjacent convex structures 101, that is, the convex structures 101 are distributed in a two-dimensional matrix array.
  • the distance and the surface can be used to make The vertically incident light diverges towards the side, further distributes the energy of the frontal light to the side viewing angle, and improves the image quality of the side viewing angle.
  • the optical compensation film 200 should be made of a transparent or translucent material that can transmit light and has a function of phase compensation.
  • the optical compensation film 200 is filled with liquid crystal.
  • the liquid crystal is a birefringent material.
  • the refractive index of the normal light is normal refractive index, which is abnormal.
  • the refractive index of light is an abnormal refractive index.
  • the direction of the abnormal refractive index is the direction in which the direction of the optical electric field is parallel to the optical axis of the liquid crystal.
  • the direction of the normal refractive index is the direction in which the optical field is perpendicular to the optical axis of the liquid crystal.
  • the optical compensation film 200 is a negative single optical axis C-compensating film, and the negative single optical axis C-compensating film can be filled with the dish-shaped liquid crystal 201, and the light of the dish-shaped liquid crystal 201 The axis is perpendicular to the light incident surface.
  • the direction of the abnormal refractive index nce (extraordinary refractive index) of the dish-shaped liquid crystal 201 is parallel to the optical axis of the dish-shaped liquid crystal, and the direction of normal refractive index nco (ordinary refractive index) of the dish-shaped liquid crystal is perpendicular to the abnormal refractive index.
  • the nce direction, that is, the normal refractive index nco direction of the dish-shaped liquid crystal is parallel to the light incident surface, and nco> nce.
  • the first refractive index of the support protective film 10 is a normal refractive index n, and n> nco.
  • the second refractive index is a negative single optical axis C-compensating film with a normal refractive index nco, and the direction of n and the direction of nco are both parallel to the light incident surface.
  • the optical compensation film 200 can also be a positive single optical axis A-compensation film.
  • the positive single optical axis A-compensation film can be filled with nematic liquid crystal 202, and the nematic liquid crystal 202 has a long rod shape.
  • the optical axis of the nematic liquid crystal 202 is parallel to the light incident surface
  • the abnormal refractive index nae direction of the nematic liquid crystal is parallel to the optical axis of the nematic liquid crystal, that is, the abnormal refractive index nae direction of the nematic liquid crystal is
  • the light planes are parallel
  • the normal refractive index nao direction of the nematic liquid crystal is perpendicular to the abnormal refractive index nae direction, and nae> nao
  • the second refractive index is the normal refraction of a positive single optical axis
  • the first refractive index of the supporting protective film 10 is the normal refractive index n, and n> nao, and the direction of n and the direction of nao are both parallel to the light incident surface.
  • the polarizing film 300 has an absorption axis and a transmission axis, and polarized light having a vibration direction parallel to the transmission axis can pass through the polarizing film 300.
  • the optical axis (optical axis of the liquid crystal) of the optical compensation film 200 can be parallel to the transmission axis of the polarizing film, and the polarization of the incident light after passing through the phase compensation film The direction is parallel to the transmission axis of the polarizing film 300, so it can completely pass through the polarizing film 300.
  • the optical compensation film 100 (positive single optical axis A-compensation film or negative single optical axis C-compensation film) also has the function of phase compensation
  • the optical compensation film 100 (positive single optical axis A -Compensation film or negative single optical axis C-compensation film) In addition to deflecting incident light at the interface to expand the viewing angle and enhance the quality of the side viewing angle, it can also play a role in phase compensation.
  • polyvinyl alcohol is usually used as a polarizing film, and polyvinyl alcohol is extremely hydrophilic.
  • a layer of triacetate cellulose is usually required on both sides of the polarizer.
  • Film, cellulose triacetate support film has high light transmittance, good water resistance and certain mechanical strength, and can protect polarizing film.
  • the support protective film 100 and the optical compensation film 200 are provided on one side of the polarizing film 300, the support protective film 100 and the optical compensation film 200 can perform phase compensation and deflect light, and can also serve as protection. Layer to protect the polarizing film 300. It should be noted that the supporting protective film 100 and the optical compensation film 200 need to have appropriate thicknesses to achieve the protective effect on the polarizing film 300.
  • FIG. 4A and FIG. 4B It is a schematic structural diagram and a three-dimensional structural diagram of the supporting protective film 100 in another embodiment.
  • a plurality of convex structures 101 are formed on the light-exiting surface of the supporting protective film 100.
  • the plurality of convex structures 101 are strip-shaped structures and part of the surface of the strip-shaped structures are arc-shaped curved surfaces.
  • the plurality of convex structures 101 may be arranged side by side.
  • the protruding structure 101 can be regarded as a fan-shaped strip-shaped protruding structure.
  • the cross-sectional shape parallel to the paper surface is a fan-shaped shape.
  • One side of the fan-shaped structure is R.
  • the distance in the second direction is Px
  • the height of the fan-shaped convex structure 101 in the first direction is D.
  • D and R satisfies the relationship described in the previous embodiment, and Px is less than or equal to 10 ⁇ m.
  • R can also be regarded as Is the length of the convex structure 101 along the second direction.
  • the convex structure 101 has both an inclined surface and a curved surface, so when the incident light R0 is refracted, a plurality of different refractions can be obtained. Angle, so that the outgoing light ray R1 is emitted in all directions, so that the light energy of the positive viewing angle is more evenly distributed to the side viewing angle.
  • the difference between this embodiment and the foregoing embodiment of the arc-shaped curved surface is only in the shape, and the specific viewing angle diffusion principle, refractive index, and size representation are the same as the description of the foregoing arc-shaped curved surface, and this embodiment is convex
  • the first refractive index of the structure 101 is greater than the second refractive index of the second compensation film, so that it is possible to ensure that the light that is incident vertically is from the light dense medium to the light sparse medium, and cooperates with the unique convex structure to make the light diffuse.
  • a part of the surface of the convex structure 101 may also be a spherical curved surface, and the convex structure 101 may be distributed in a dot-like array (two-dimensional matrix array) on the light emitting surface.
  • a compensation film 400 and an anti-glare film 500 may be sequentially stacked on the light-emitting side of the polarizing film 300, and a light-sensitive surface 500 of the compensation film 400 is covered with a laminated sensitive adhesive layer 500.
  • the polarizing plate 10 is adhered to a glass substrate through a pressure-sensitive adhesive layer 600.
  • a polarizing plate is also provided.
  • the polarizing plate includes a supporting protective film having a first refractive index.
  • the supporting protective film has a light incident surface and a light emitting surface.
  • the light emitting surface is provided with a plurality of convex structures having a predetermined shape. At least part of the surface of the structure is a curved surface, and the angle formed by the curved surface and the light incident surface is an acute angle.
  • An optical compensation film is formed on the light emitting surface.
  • the optical compensation film has a second refractive index, and the first refractive index is larger than the first refractive index.
  • the birefringence, optical compensation film is provided with a plurality of grooves having the same shape and size as the convex structure on the surface in contact with the support and protection film; a polarizing film is provided on the optical compensation film.
  • the incident light perpendicular to the supporting protective film can be refracted, thereby The light energy of the positive viewing angle is distributed to the side viewing angle, thereby solving the problem of color cast.
  • no additional metal wiring is used in the entire polarizing plate, there is no problem that affects the transmittance of light and further affects the image quality.
  • the present application also discloses a display device.
  • the display device includes a backlight module 5 and a display panel 1 disposed above the backlight module.
  • the backlight module 5 is used to provide incident light R0 (not labeled in FIG. 7).
  • the incident light R0 is incident on the display panel 1 in a concentrated manner.
  • the divergent direction of the incident light R0 is at a small angle with the direction perpendicular to the display panel 1. Less than 30 °, most of the light received by the display panel 1 is normal incident light. Since the support protective film 100 and the optical compensation film 200 exist in the display panel 1 and the light-emitting surface of the support protective film 100 is provided with a plurality of convex shapes having a predetermined shape.
  • the lifting structure 101 can deflect the normal incident light to produce outgoing light R1 by refraction on the surface of the protruding structure 101, thereby allocating the positive viewing angle energy to the side viewing angle and improving the image quality of the side viewing angle.
  • the backlight module 5 may include a side-type LED light source 51, a reflection sheet 52, and a light guide plate 53.
  • the upper and lower surfaces of the light guide plate 53 are provided with long V-shaped grooves.
  • the side walls of the V-shaped grooves on the lower surface of the light guide plate 53 are parallel to the side-type light source 51, and the V-shaped grooves on the upper surface of the light guide plate 53 and the V-shaped grooves on the lower surface. Set up perpendicular to each other.
  • the display panel 1 may be, for example, a TFT-LCD (Thin Film Transistor Liquid Crystal Displayer) display panel 1, an OLED (Organic Light-Emitting Diode) display panel 1, or a QLED (Quantum Dot Light Emitting Diodes). , Quantum dot light emitting diode) display panel 1, curved display panel 1 or other display panel 1.
  • TFT-LCD Thin Film Transistor Liquid Crystal Displayer
  • OLED Organic Light-Emitting Diode
  • QLED Quantum Dot Light Emitting Diodes
  • the display panel 1 includes an upper polarizing plate 1000, a lower polarizing plate 2000, an upper substrate 3000, a lower substrate 4000, and a sandwiching substrate.
  • the incident order of light in the display panel 1 is: first enter the lower polarizing plate 2000, then pass through the lower substrate 4000, then pass through the liquid crystal layer 6000, and enter after rotating through the liquid crystal layer 6000 Enter the upper substrate 3000, and finally enter the upper polarizing plate 1000.
  • the lower polarizing plate 2000 is the polarizing plate 10 described in the foregoing embodiment. It can be understood that the upper polarizing plate 2000 may also be the polarizing plate 10 described in the foregoing embodiment.
  • the lower polarizing plate 2000 may include a supporting protective film 100 for supporting protection.
  • the film 100 has a first refractive index
  • the support and protection film 100 has a light incident surface and a light emitting surface, and a plurality of convex structures 101 having a predetermined shape are provided on the light emitting surface.
  • the convex structure 101 has at least a part of the surface and the light incident surface.
  • the formed angle is an acute angle; the lower polarizing plate 2000 further includes an optical compensation film 200 formed on the light exit surface of the support and protection film 100.
  • the optical compensation film 200 has a second refractive index, and the first refractive index is greater than the second refractive index;
  • the plate 2000 further includes a polarizing film 300 provided on the optical compensation film 200.
  • the optical compensation film 200 can phase compensate the incident light. Because light enters from light dense to light dense, and the incident angle of incident light on at least part of the contact surface is not equal to 90 °, a refraction phenomenon occurs, which deflects normal incident light to a side viewing angle, and distributes positive viewing angle energy to the side viewing angle. To improve the quality of the side view.
  • the specific structure of the polarizing plate 10 has been described in detail above, and is not repeated here.

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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

L'invention concerne une plaque de polarisation et un dispositif d'affichage. La plaque de polarisation (10) comprend : un film protecteur de support (100) ayant un indice de réfraction élevé et pourvu d'une pluralité de structures en saillie (101), une partie de la surface de la structure en saillie (101) étant incurvée ; et un film de compensation optique (200) ayant un faible indice de réfraction, le film de compensation optique (200) étant pourvu de rainures (210) correspondant à la pluralité de structures en saillie (101).
PCT/CN2018/120015 2018-09-30 2018-12-10 Plaque de polarisation et dispositif d'affichage Ceased WO2020062591A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201811161580.7A CN109143445A (zh) 2018-09-30 2018-09-30 偏光板、显示面板及显示装置
CN201811161580.7 2018-09-30

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WO2020062591A1 true WO2020062591A1 (fr) 2020-04-02

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WO (1) WO2020062591A1 (fr)

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CN109817823B (zh) * 2019-01-09 2022-03-18 云谷（固安）科技有限公司 显示面板及其制备方法
CN111724697B (zh) * 2020-05-18 2023-01-24 明基材料有限公司 电致发光显示器
CN113871550A (zh) * 2021-09-24 2021-12-31 惠州华星光电显示有限公司 封装结构和显示面板
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