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WO2020062592A1 - Polariseur et dispositif d'affichage - Google Patents

Polariseur et dispositif d'affichage Download PDF

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Publication number
WO2020062592A1
WO2020062592A1 PCT/CN2018/120031 CN2018120031W WO2020062592A1 WO 2020062592 A1 WO2020062592 A1 WO 2020062592A1 CN 2018120031 W CN2018120031 W CN 2018120031W WO 2020062592 A1 WO2020062592 A1 WO 2020062592A1
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WO
WIPO (PCT)
Prior art keywords
phase compensation
compensation film
film
polarizing plate
refractive index
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/CN2018/120031
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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 WO2020062592A1 publication Critical patent/WO2020062592A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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

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:
  • a first phase compensation film is formed on the pressure-sensitive adhesive layer and has a light incident surface and a light emitting surface; the light incident surface of the first phase compensation film is in contact with the pressure sensitive adhesive layer, and the first phase compensation
  • the light emitting surface of the film is provided with a plurality of grooves having a predetermined shape, and an included angle between a side surface of the groove and the light incident surface is an acute angle;
  • a second phase compensation film is formed on the light emitting surface; a second refractive index of the second phase compensation film is greater than a first refractive index of the first phase compensation film;
  • a plurality of convex structures matched with the shape and size of the groove are provided on a surface contacted by the first phase compensation film;
  • a polarizing film is formed on the second phase compensation film.
  • a polarizing plate includes:
  • a first phase compensation film is formed on the pressure-sensitive adhesive layer and has a light incident surface and a light emitting surface; the light incident surface of the first phase compensation film is in contact with the pressure sensitive adhesive layer, and the first phase compensation
  • the light emitting surface of the film is provided with a plurality of triangular pyramid-shaped grooves, and an included angle between a side surface of the triangular pyramid-shaped grooves and the light incident surface is an acute angle;
  • a second phase compensation film is formed on the light emitting surface; a second refractive index of the second phase compensation film is greater than a first refractive index of the first phase compensation film;
  • a plurality of triangular pyramid-shaped convex structures matching the shape and size of the triangular pyramid-shaped groove are opened on a surface contacted by the first phase compensation film;
  • a polarizing film is formed on the second phase compensation film.
  • a display device includes:
  • a backlight module configured to provide a light source
  • a display panel is placed on one side of the backlight module and is set as a display screen
  • the display panel includes a polarizing plate, and the polarizing plate includes:
  • a first phase compensation film is formed on the pressure-sensitive adhesive layer and has a light incident surface and a light emitting surface; the light incident surface of the first phase compensation film is in contact with the pressure sensitive adhesive layer, and the first phase compensation
  • the light emitting surface of the film is provided with a plurality of grooves having a predetermined shape, and an included angle between a side surface of the groove and the light incident surface is an acute angle;
  • a second phase compensation film is formed on the light emitting surface; a second refractive index of the second phase compensation film is greater than a first refractive index of the first phase compensation film;
  • a plurality of convex structures matched with the shape and size of the groove are provided on a surface contacted by the first phase compensation film;
  • a polarizing film is formed on the second phase compensation film.
  • the above-mentioned polarizing plate and display device are provided with a first phase compensation film and a second phase compensation film, and the first refractive index is smaller than the second refractive index, that is, light is incident from the light incident surface of the first phase compensation through the light emitting surface and then emitted When entering the second phase compensation film, it is from the photophosphine to the light dense. Therefore, a refraction phenomenon occurs at the contact interface between the two films, and the light is deflected.
  • a convex structure is formed on a side of the second phase compensation film that is in contact with the first phase compensation film, and an angle between the side surface of the convex structure and the light incident surface is an acute angle.
  • the incident angle formed on the surface of the raised structure is less than 90 °, so a refraction phenomenon occurs, which deflects the light incident vertically, thereby distributing the energy of the positive viewing angle to the side viewing angle and improving the image quality of the side viewing angle.
  • 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.
  • FIG. 1 is a schematic diagram of the composition of a polarizing plate in an embodiment
  • FIG. 2 is a schematic structural diagram of a second phase compensation film in FIG. 1;
  • FIG. 3 is a perspective view of a second phase compensation film in an embodiment
  • FIG. 4 is a schematic diagram of a composition of a polarizing plate in another embodiment
  • FIG. 5 is a perspective view of a second phase compensation film in another embodiment
  • FIG. 6 is a schematic diagram of a display device according to an embodiment
  • FIG. 7 is a schematic diagram of the composition of the display panel in FIG. 6.
  • the polarizing plate may include a pressure-sensitive adhesive layer 10, a first phase compensation film 20, a second phase compensation film 30, and a polarizing film 40.
  • the pressure-sensitive adhesive layer 10 is mainly provided to adhere a polarizing plate and other components.
  • the first phase compensation film 20 is formed on the pressure-sensitive adhesive layer 10.
  • the first phase compensation film 20 has a light-incident surface and a light-exit surface.
  • the light-incident surface is a side that receives incident light. The surface is in contact with the pressure-sensitive adhesive layer 10, and the light enters the first phase compensation film 20 from the incident surface and exits from the light emitting surface.
  • the light emitting surface is provided with a plurality of grooves 220 having a predetermined shape.
  • the angle formed by the surface is ⁇ , and ⁇ is an acute angle, which satisfies 0 ° ⁇ ⁇ 90 °.
  • the angle between the side of the groove 220 and the light incident surface is set to an acute angle, so that when light enters the first phase compensation film 20 from the light incident surface and exits from the light emitting surface, it will be caused by the groove 220 opened on the light emitting surface. Refraction occurs.
  • the second phase compensation film 30 is formed on the first phase compensation film 20.
  • the second phase compensation film 30 is provided with a plurality of protrusions having the same shape and size as the grooves 220 on the surface in contact with the first phase compensation film 20.
  • the structure 310 that is, the second phase compensation film 30 and the first phase compensation film 20 can be completely bonded to each other through the protruding structure 310 and the groove 220.
  • the first phase compensation film 20 has a first refractive index n1
  • the second phase compensation film 30 has a second refractive index n2
  • the first refractive index n1 is smaller than the second refractive index n2.
  • the polarizing plate 10 further includes a polarizing film 40.
  • the polarizing film 40 is configured to polarize incident light and emit the polarized light.
  • the polarizing film 40 may be a PVA (Polyvinyl alcohol) material, which mainly absorbs and penetrates polarized light.
  • the polarizing film 40 is a product commonly used in the market.
  • the transmission axis is Parallel to the 90/270 degree direction
  • the absorption axis is parallel to the 0/180 degree direction.
  • the polarizing film 40 can also be selected from products in which the transmission axis is parallel to the 0/180 degree direction and the absorption axis is parallel to the 90/270 degree direction.
  • the incident angle of the vertically incident light at the surface of the convex structure 310 is ⁇ , 0 ⁇ ⁇ 90 °, so the light will be refracted, the refraction angle is ⁇ , because the light enters the second phase compensation film 30 (light (Dense quality), so ⁇ is larger than ⁇ , that is, the light propagation path is changed, and the light R1 deviates from the original normal incident direction and diverges to the side. Therefore, more light enters the side and improves 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 ⁇ n2 ⁇ 2.5.
  • the selectable value range of m is 0.01 ⁇ m ⁇ 1.5.
  • the protrusion structure 310 of the second phase compensation film 30 is a triangular prism strip structure (V-shaped strip protrusion structure)
  • the distance between adjacent triangular prism protrusions in the first direction is greater than or equal to three
  • the length of the prism protrusion in the first direction is the first direction, which can also be understood as Extension direction along the X axis.
  • the triangular prism may be a regular triangular prism, or it may not be a regular triangular prism; the sizes of the multiple triangular prisms may be the same or different.
  • the plurality of triangular prism protruding structures 310 are parallel to each other on a surface where the second phase compensation film 30 and the first phase compensation film 20 contact.
  • the surface of the second phase compensation film 30 that is in contact with the first phase compensation film 20 is rectangular.
  • Px is the distance between adjacent triangular prism strip structures
  • Lx is the length of the triangular prism strip structures in the first direction
  • Px and Lx satisfy: Px ⁇ Lx.
  • the protrusion structure 310 is a triangular pyramid protrusion structure, since it can have the same cross-section as a triangular prism protrusion, reference may be made to FIG. 2 and FIG. 4 at the same time.
  • Adjacent triangular pyramid protrusions The distance of the structure 310 in the first direction is greater than or equal to the length of the triangular pyramidal protrusion structure 310 in the first direction; the distance of the adjacent triangular pyramidal protrusion structure 310 in the second direction is greater than or equal to the triangular pyramidal protrusion structure
  • the length of 310 in the second direction, where the surface where the second phase compensation film 30 and the first phase compensation film 20 are in contact is rectangular, so the extension direction of the rectangular width is taken as the first direction, which can also be understood as along X
  • the extension direction of the axis; the extension direction of the rectangular length is the second direction, which can be understood here as the extension direction along the Y axis.
  • the triangular prism may be a regular triangular pyramid, or may not be a regular triangular pyramid.
  • the sizes of the multiple triangular pyramids may be the same or different. It can be understood that the shape, size, and size of the groove can be changed without departing from the core principle of the application to meet the actual needs of those skilled in the art.
  • Px is the distance in the first direction of adjacent triangular pyramidal protrusion structures 310
  • Py is the distance in the second direction of adjacent triangular pyramidal protrusion structures 310
  • Lx is triangular pyramidal protrusions
  • Ly is the length of the triangular pyramidal protrusion structure 310 in the second direction.
  • Px, Py, Lx, and Ly satisfy: Px ⁇ Lx; Py ⁇ Ly.
  • Px> Lx and Py> Ly there are gaps between adjacent convex structures 310, that is, the convex structures 310 are distributed in a two-dimensional matrix array.
  • the space and protrusion can be used. Disperse the vertically incident light toward the side, further distribute the energy of the frontal light to the side viewing angle, and improve the image quality of the side viewing angle.
  • a plurality of V-shaped strip-shaped convex structures may also be distributed in a two-dimensional matrix array, and the arrangement in two dimensions may refer to the front triangular pyramid convex structure. The description is not repeated here. Due to the space between adjacent convex structures, the convex junctions are distributed in a two-dimensional matrix array.
  • light propagates from optically dense to light dense vertical incident light can be diffused toward the side by means of the interval and convexity.
  • the front-view light energy is further allocated to the side viewing angle to improve the image quality of the side viewing angle.
  • the first phase compensation film 20 and the second phase compensation film 30 may be a single optical axis optical compensation film made of a light-transmissive transparent or translucent material and having a function of phase compensation.
  • the phase compensation film Filled with liquid crystal, liquid crystal is a birefringent material. When light enters the liquid crystal, it will be refracted into two rays of normal light and abnormal light. Among them, the refractive index of normal light is the normal refractive index, and the refractive index of abnormal light is the abnormal refractive index.
  • the rate direction is a direction in which the direction of the electric field is parallel to the optical axis of the liquid crystal
  • the direction of the normal refractive index is a direction in which the electric field is perpendicular to the optical axis of the liquid crystal
  • the direction of the abnormal refractive index is perpendicular to the direction of the normal refractive index.
  • the first phase compensation film 20 may be a negative single optical axis compensation film, and specifically may be a negative single optical axis C-compensation film.
  • the normal refractive index of the negative single optical axis C-compensation film is parallel to All directions of the light emitting surface.
  • Negative uniaxial C-compensation film can be filled with dish-shaped liquid crystal molecules, the dish-shaped liquid crystal molecules are dish-shaped liquid crystals, the optical axis of the dish-shaped liquid crystal is perpendicular to the light incident surface, and the abnormal refractive index of the dish-shaped liquid crystal nce (extraordinary refractive index) ) Direction is parallel to the optical axis of the dish-shaped liquid crystal, and the normal refractive index nco (ordinary refractive index) direction of the dish-shaped liquid crystal is perpendicular to the abnormal refractive index (extraordinary refractive index) direction, that is, the normal refractive index nco direction of the dish-shaped liquid crystal is parallel to Incident surface, and nco> nce.
  • the second phase compensation film 30 may be a positive single optical axis compensation film, and specifically may be a positive single optical axis A-compensation film, which also has an abnormal refractive index and a normal refractive index; the inside of the positive single optical axis A-compensation film Nematic liquid crystal molecules can be filled.
  • the nematic liquid crystal molecules are long rod-shaped liquid crystals.
  • the optical axis of the nematic liquid crystal is parallel to the light incident surface.
  • the abnormal refractive index nae of the nematic liquid crystal and the optical axis of the nematic liquid crystal are filled.
  • the abnormal refractive index nae direction of the nematic liquid crystal is parallel to the light incident surface
  • the normal refractive index nao direction of the nematic liquid crystal is perpendicular to the abnormal refractive index nae direction, and nae> nao
  • the first The refractive index is the abnormal refractive index nae of the second phase compensation film 30
  • the second refractive index is the normal refractive index nco of the C-compensation film.
  • the direction of nae and the direction of nco are both parallel to the light incident surface.
  • the refractive index of the first phase compensation film 20 may be 1.0-2.5, and the first refractive index here is also a normal refractive index, that is, nco (ordinary refractive index).
  • the abnormal refractive index (second refractive index) of the second phase compensation film 30 is larger than the normal refractive index (first refractive index) of the first phase compensation film 20.
  • the first phase compensation film 20 is an optically sparse medium with respect to the second phase compensation film 30, and the second phase compensation film 30 is an optically dense medium with respect to the first phase compensation film 20.
  • the range of the difference between the abnormal refractive index of the second phase compensation film 30 and the normal refractive index of the first phase compensation film 20 is optionally 0.01-2.
  • the polarizing film 40 has an absorption axis and a transmission axis, and polarized light having a polarization direction parallel to the transmission axis can pass through the polarizing film 40.
  • the optical axis (optical axis of the liquid crystal) of the optical compensation film can be parallel to the transmission axis of the polarizing film 40, 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 40, so it can completely pass through the polarizing film.
  • the optical compensation film also has a phase compensation function, in addition to using the optical compensation film to deflect 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 has extremely strong hydrophilicity. In order to protect the physical properties of the polarizing film, it mainly absorbs and penetrates polarized light. Polarized light in this application
  • the film 40 is selected from products currently used in the market. The penetration axis is parallel to the 90/270 degree direction, and the absorption axis is parallel to the 0/180 degree direction.
  • a layer of triacetate cellulose support film is required on both sides of the polarizer.
  • the triacetate cellulose support film has high light transmittance, good water resistance and certain mechanical strength, and can protect the polarizer.
  • first phase compensation film 20 having a groove 220 and a second phase compensation film 30 having a protrusion 310 are provided on one side of the polarizer, the first phase compensation film 20 and the second phase compensation The film 30 can perform phase compensation and deflect light, and can also serve as a protective layer to protect the polarizing film 40. Therefore, the triacetate cellulose supporting film on the light-entering side of the polarizer can be omitted in the polarizing plate, which is beneficial to thinning the product. design. It should be noted that the thickness of the first phase compensation film 20 and the thickness of the second phase compensation film 30 (that is, D + d in FIG. 2) need to satisfy a suitable thickness to achieve the protective effect on the polarizing film.
  • a polarizing plate may include a pressure-sensitive adhesive layer 10, a first phase compensation film 20, a second phase compensation film 30, a polarizing film 40 and Support protective film 50.
  • the pressure-sensitive adhesive layer 10 is mainly provided to adhere a polarizing plate and other components.
  • the first phase compensation film 20 is formed on the pressure-sensitive adhesive layer 10.
  • the first phase compensation film 20 has a light incident surface and a light emitting surface. The light incident surface of the first phase compensation film 20 is in contact with the pressure sensitive adhesive layer 10. The light surface is the side that receives incident light. The light enters the first phase compensation film 20 from the incident surface and exits from the light emitting surface.
  • the light emitting surface is provided with a plurality of grooves 220 having a predetermined shape.
  • the second phase compensation film 30 is formed on The first refractive index of the first phase compensation film 20 is smaller than the second refractive index of the second phase compensation film 30.
  • the first phase compensation film 20 is provided with a plurality of grooves 220 having a predetermined shape on the light emitting surface, and an included angle between a side surface of the groove 220 and the light incident surface is an acute angle.
  • the second phase compensation film 30 is provided with a plurality of convex structures 310 matching the shape and size of the groove 220 on the surface in contact with the first phase compensation film 20.
  • a polarizing film 40 is formed on the second phase compensation film 30; and a support protective film 50 is formed on the polarizing film 40.
  • the material of the supporting protective film 50 may include any one of a polyethylene terephthalate film, a cellulose triacetate film, or a polymethyl methacrylate film.
  • PET Polyethylene terephthalate
  • amorphous PET plastic has good optical transparency.
  • PET plastic has excellent abrasion resistance, dimensional stability, and electrical insulation.
  • TAC Triacetyl Cellulose
  • PMMA Polymethyl Methacrylate
  • the thickness of the supporting protective film 50 should ensure that the weather resistance of the polarizing film 40 is not affected, protect the polarizing film 40 from contacting the external environment, and prevent moisture from entering polarized light Film 40.
  • the support protective film 50 may further be doped with resin particles so that the support protective film 50 has anti-vertigo function.
  • the specific doping concentration in this application which is well known to those skilled in the art, and The usual doping concentration is sufficient.
  • an optical film may also be coated on the light-emitting surface of the support protective film 50 so that the support protective film 50 has an anti-reflection function.
  • an optical film may also be coated on the light-emitting surface of the support protective film 50 so that the support protective film 50 has an anti-reflection function.
  • a polarizing plate is also provided.
  • the polarizing plate may include: a first phase compensation film having a light incident surface and a light emitting surface; a plurality of grooves having a triangular pyramid shape are provided on the light emitting surface of the first phase compensation film, and the triangular pyramid shape The angle between the side of the groove and the light incident surface is an acute angle; the second phase compensation film is formed on the light emitting surface; the second refractive index of the second phase compensation film is greater than the first refractive index of the first phase compensation film;
  • the second phase compensation film is provided on the surface in contact with the first phase compensation film with a plurality of triangular pyramid-shaped convex structures matching the shape and size of the triangular pyramid-shaped groove; a polarizing film is formed on the second phase compensation film .
  • the first phase compensation film 20 is a negative single optical axis C-compensation film
  • the groove 220 of the first phase compensation film 20 is a V-shaped groove
  • the protrusion structure 310 of the compensation film 30 is a V-shaped strip protrusion.
  • the transmission axis of the polarizing film is parallel to the 90/270 ° direction
  • the absorption axis is parallel to the 0/180 ° direction.
  • the light passes through the lower polarizer 2000 before entering the display panel, and then enters the upper polarizer 1000.
  • the upper polarizer 1000 has the function of absorbing and penetrating polarized light.
  • the light After entering the upper polarizer 1000, the light can be divided into horizontal polarization and vertical. Since the polarization axis of the polarizing film 40 used in the present application is parallel to the direction of 90/270 °, only the interface of the medium through which the polarizing light passes will be focused here.
  • the equivalent refractive index of the light R0 of the vertical polarization component on the negative single optical axis C-compensating film is nco (ordinary refractive index).
  • the vertically polarized light is at the interface between the two media (ie, the V-shaped strip in FIG. 2) (Bulge) occurs from the optically sparse medium into the light-tight medium (nae> nco).
  • a refraction effect is generated to produce the outgoing light R1, forming Optical phenomenon with large viewing angle for energy distribution of positive viewing angle light type.
  • the light energy of the positive viewing angle is allocated to the side viewing angle, and the problem of color cast is improved.
  • the absorption axis of the polarizing film 40 used is parallel to the 0/180 ° direction.
  • the light passes through the lower polarizing plate 2000 before entering the display panel, and then enters the upper polarizing plate 1000.
  • the upper polarizing plate 1000 has the function of absorbing and penetrating polarized light. After entering the upper polarizing plate 1000, the light can be divided into horizontal polarization and vertical polarization components. Light. Since the transmission axis of the polarizing film 40 used here is a parallel 0/180 ° direction, only the medium interface through which light with a horizontal polarization component passes will be focused here.
  • the light of the horizontal polarization component passes through the polarization axis 40/180 ° direction of the polarizing film 40 (the vertically polarized light is absorbed by the polarizing film 40 absorption axis 90/270 °), which is equivalent to the negative single optical axis C-compensation film
  • the refractive index is nco (ordinary refreactive index, normal refractive index).
  • the light of the horizontal polarization component passes through the negative single optical axis C-compensation film and then passes through the positive single optical axis A-compensation film (corresponding to the positive single optical axis A-
  • the refractive index of the compensation film is nae), so the horizontally polarized light enters the light-dense medium (nae> nco) from the light-sparse medium to the light-dense medium (nae> nco) at the interface between the two media (ie, the V-shaped strip-shaped protrusions in FIG. 2).
  • a sharp angle formed between the convex structure 310 and the light incident surface of the second phase compensation film 30 produces a refraction effect, forming a positive viewing angle optical type energy distribution and a large viewing angle optical phenomenon. It is also possible to achieve the problem of color misregistration by allocating the light energy of the positive viewing angle to the side viewing angle through the above principle.
  • FIG. 6 is a schematic diagram of a display device according to an embodiment.
  • the present application also discloses a display device including a backlight module 5 and a display panel 1 disposed above the backlight module.
  • the backlight module 5 is configured to provide incident light R0 (not labeled in FIG. 6).
  • 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 perpendicularly incident light. Since the first phase compensation film 20 and the second phase compensation film 30 and the second phase compensation film 30 and the first phase compensation film exist in the display panel 1.
  • the 20-contacting surface is provided with a plurality of convex structures 310 having a preset shape.
  • the surface of the convex structure 310 can be deflected to generate the outgoing light R1 (remarked by not shown in FIG. 6) by refraction, thereby distributing the energy of the positive viewing angle. Go to the side view angle to improve the picture quality of the side view 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 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, a QLED (Quantum Dot Light Emitting Diodes, Quantum dot light emitting diode) display panel 1, curved display panel 1 or other display panel 1.
  • 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 liquid crystal layer 6000 sandwiched between the upper substrate 3000 and the lower substrate 4000.
  • the middle incidence order is: first enter the lower polarizing plate 2000, then pass through the lower substrate 4000, then pass through the liquid crystal layer 6000, rotate through the liquid crystal layer 6000, and then enter the upper substrate 3000, and finally enter the upper polarizing plate 1000.
  • the upper polarizing plate 1000 is the polarizing plate described in the foregoing embodiment.
  • the upper polarizing plate 1000 may include a first phase compensation film 20, a second phase compensation film 30, and a polarizing film 40.
  • the first phase compensation film 20 has a first refractive index
  • the second phase compensation film 30 has a second refractive index.
  • the refractive index is smaller than the second refractive index
  • the first phase compensation film 20 is provided with a plurality of grooves 220 having a predetermined shape.
  • the angle between the side of the groove 220 and the light incident surface is an acute angle; the upper polarizing plate 1000 It may further include a support protection film 50 formed on the polarizing film 40; a side of the second phase compensation film 30 in contact with the first phase compensation film 20 is provided with a plurality of protrusions matching the shape and size of the groove 220. ⁇ ⁇ 310 ⁇ From the structure 310. The light is incident from the upper polarizing plate 1000 into the first phase compensation film 20 in the upper polarizing plate 1000 and enters the second phase compensation film 30. The first phase compensation film 20 and the second phase compensation film 30 can phase compensate the incident light.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Liquid Crystal (AREA)
  • Polarising Elements (AREA)

Abstract

L'invention concerne un polariseur et un dispositif d'affichage. Le polariseur comprend : un premier film de compensation de phase (20) ayant un indice de réfraction faible, une pluralité d'évidements (220) étant disposés sur le premier film de compensation de phase (20) ; et un second film de compensation de phase (30) ayant un indice de réfraction élevé, une pluralité de structures de saillie (310) correspondant aux évidements (220) étant disposées sur le second film de compensation de phase (30).
PCT/CN2018/120031 2018-09-30 2018-12-10 Polariseur et dispositif d'affichage Ceased WO2020062592A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109633987A (zh) * 2019-01-30 2019-04-16 惠科股份有限公司 光学膜层和显示装置
CN113467125A (zh) * 2020-03-11 2021-10-01 明基材料有限公司 液晶显示器

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101158778A (zh) * 2007-11-14 2008-04-09 友达光电（苏州）有限公司 广视角膜与应用该广视角膜的液晶显示装置
CN101176021A (zh) * 2005-04-08 2008-05-07 3M创新有限公司 用于显示器中的结构化取向薄膜
CN101510010A (zh) * 2008-02-13 2009-08-19 碧理科技有限公司 偏振光分束器及其制造方法、以及使用其的液晶投影仪
CN201314990Y (zh) * 2008-12-19 2009-09-23 上海纽发利商贸有限公司 广视角镜片及利用广视角镜片的偏光板和液晶显示装置
CN102667541A (zh) * 2009-12-25 2012-09-12 三井化学株式会社 偏光性扩散膜及其制造方法以及包含偏光性扩散膜的液晶显示装置
CN102707491A (zh) * 2011-11-30 2012-10-03 京东方科技集团股份有限公司 液晶显示器和其视角补偿方法
CN104737040A (zh) * 2012-09-28 2015-06-24 富士胶片株式会社 光学补偿板
CN105929476A (zh) * 2015-02-27 2016-09-07 三星Sdi株式会社 偏光板和包括偏光板的液晶显示器
JP6078969B2 (ja) * 2012-03-29 2017-02-15 大日本印刷株式会社 光拡散フィルム、偏光板、及び液晶表示装置
US20180081223A1 (en) * 2016-09-19 2018-03-22 Apple Inc. Optical Films for Electronic Device Displays

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101176021A (zh) * 2005-04-08 2008-05-07 3M创新有限公司 用于显示器中的结构化取向薄膜
CN101158778A (zh) * 2007-11-14 2008-04-09 友达光电（苏州）有限公司 广视角膜与应用该广视角膜的液晶显示装置
CN101510010A (zh) * 2008-02-13 2009-08-19 碧理科技有限公司 偏振光分束器及其制造方法、以及使用其的液晶投影仪
CN201314990Y (zh) * 2008-12-19 2009-09-23 上海纽发利商贸有限公司 广视角镜片及利用广视角镜片的偏光板和液晶显示装置
CN102667541A (zh) * 2009-12-25 2012-09-12 三井化学株式会社 偏光性扩散膜及其制造方法以及包含偏光性扩散膜的液晶显示装置
CN102707491A (zh) * 2011-11-30 2012-10-03 京东方科技集团股份有限公司 液晶显示器和其视角补偿方法
JP6078969B2 (ja) * 2012-03-29 2017-02-15 大日本印刷株式会社 光拡散フィルム、偏光板、及び液晶表示装置
CN104737040A (zh) * 2012-09-28 2015-06-24 富士胶片株式会社 光学补偿板
CN105929476A (zh) * 2015-02-27 2016-09-07 三星Sdi株式会社 偏光板和包括偏光板的液晶显示器
US20180081223A1 (en) * 2016-09-19 2018-03-22 Apple Inc. Optical Films for Electronic Device Displays

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