WO2014153852A1 - 偏光片及显示装置 - Google Patents
偏光片及显示装置 Download PDFInfo
- Publication number
- WO2014153852A1 WO2014153852A1 PCT/CN2013/077338 CN2013077338W WO2014153852A1 WO 2014153852 A1 WO2014153852 A1 WO 2014153852A1 CN 2013077338 W CN2013077338 W CN 2013077338W WO 2014153852 A1 WO2014153852 A1 WO 2014153852A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- optical compensation
- compensation film
- wave plate
- axis direction
- refractive index
- Prior art date
Links
- 239000010410 layer Substances 0.000 claims description 213
- 230000003287 optical effect Effects 0.000 claims description 178
- 230000005540 biological transmission Effects 0.000 claims description 85
- 230000010287 polarization Effects 0.000 claims description 11
- 239000011241 protective layer Substances 0.000 claims description 11
- 239000010408 film Substances 0.000 description 88
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 239000000758 substrate Substances 0.000 description 7
- 239000004065 semiconductor Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000005525 hole transport Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 238000011282 treatment Methods 0.000 description 2
- 206010052128 Glare Diseases 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3083—Birefringent or phase retarding elements
-
- 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
- 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
Definitions
- the present invention relates to the field of display technologies, and in particular, to a polarizer and a display device including the polarizer. Background technique
- An OLED (Organic Light-Emitting Diode) display also known as an organic electroluminescent display, is an emerging flat panel display device that has a low manufacturing process, low cost, low power consumption, and high luminance.
- the utility model has the advantages of wide adaptability to the working temperature, light volume, fast response speed, easy realization of color display and large screen display, easy realization of matching with the integrated circuit driver, easy realization of flexible display, and the like, and thus has broad application prospects.
- the display device in the OLED display generally includes a substrate substrate 1, a semiconductor layer 2 (also referred to as an ITO layer) and an electrode layer 6 which are sequentially disposed on the substrate of the substrate, and an electrode layer 2 and an electrode.
- the structural layer between layers 6.
- the semiconductor layer 2 is connected to the positive electrode of the power to form an anode
- the electrode layer 6 is connected to the negative electrode of the power to form a cathode
- the structural layer includes a hole transport layer 3 (also referred to as an HTL layer) connected to the semiconductor layer 2, and an electrode An electron transport layer 5 (ETL) connected to the layer 6 and a light-emitting layer 4 (EL) disposed between the hole transport layer 3 and the electron transport layer 5.
- ETL electron transport layer 5
- EL light-emitting layer 4
- the holes generated by the anode and the charges generated by the cathode are combined in the light-emitting layer to produce light, and the three primary colors of red, green and blue are respectively generated according to the formula to form a basic color.
- the electrode layer 6 is generally made of metal, its reflectivity is extremely high, so that the OLED display may have poor readability due to light reflection when it is used outdoors in a strong external environment.
- a circular polarizer is generally used to solve the above problem.
- the circular polarizer 7 is disposed on a surface of the substrate substrate 1 away from the electrode layer 6 and is incident along the ambient light.
- the protective layer 701, the polarizing layer 702 and the quarter wave plate 703 are sequentially included; wherein the quarter wave plate generally adopts a uniaxial phase retarder, and the refractive index factor Nz is generally 0 or 1.
- the linearly polarized light having the polarization direction coincident with the absorption axis of the polarizing layer 702 is absorbed by the polarizing layer 702, thereby preventing external ambient light reflection and improving outdoor readability.
- the circular polarizer can absorb the ambient light of the normal incidence almost completely, the optical axis of the quarter-wave plate 703 or the polarization layer 702 is transmitted at the plane of polarization of the obliquely incident ambient light. A certain deflection occurs in the direction of the shaft, and causes an angle between the optical axis of the quarter wave plate 703 and the transmission axis of the polarizing layer 702 to change, thereby causing light leakage, as shown in FIG.
- the polarizer is almost opaque when the ambient light is incident perpendicularly, and the maximum light leakage rate is about 5% when the ambient light is obliquely incident.
- the luminous intensity per unit area of the sun is 20000 nit, and the circular polarizer is inclined to the maximum.
- the intensity of the reflected light can reach 1000%, which seriously affects the outdoor readability of the OLED display, and the stronger the external ambient light, the worse the outdoor readability of the OLED display (Fig. 4, along the The outer circumferential direction is distributed as the azimuth angle, and the radial direction is distributed as the polar angle, and the relative light intensity at the position where the gray level is the highest in the figure is zero, and the relative light intensity at the position where the gray level is lower. Higher).
- the transmission axis of the polarizing layer is perpendicular to the point A, and the point A is the positive direction of the S1 axis.
- the optical axis 703A of the quarter-wave plate coincides with the S2 axis. In this case, the light incident on the circular polarizer is completely absorbed by the circular polarizer after being reflected by the electrode layer, so that light leakage is not caused.
- the deviation between the positive direction and the circumference is also caused, and in this case, light leakage is also caused; according to the symmetry of the optical structure, the azimuth angles are 135° and 225, respectively. At 315°, light leakage can also occur.
- Embodiments of the present invention provide a polarizer capable of solving the problem of oblique light leakage of an OLED display and a display device including the polarizer.
- a polarizer for use with a reflective layer, the polarizer comprising a polarizing layer and a compensation layer, the compensation layer being disposed between the polarizing layer and the reflective layer .
- a display device comprising the above polarizer.
- a quarter-wave plate having a refractive index factor Nz of 0 or 1 cooperates with the polarizing layer and the reflective layer to prevent reflection of ambient light, but is obliquely incident to the outside of the circular polarizer.
- Ambient light causes the optical axis of the quarter-wave plate to deflect or the transmission axis of the polarizing layer to deflect, resulting in oblique light leakage, that is, the existing circular polarizer can only prevent the external environment from being vertically incident thereon. The reflection of light does not prevent the reflection of ambient light obliquely incident thereon.
- a compensation layer is used in cooperation with the polarizing layer and the reflective layer to prevent reflection of ambient light incident on the polarizer in each direction.
- the compensation layer uses a quarter-wave plate with a refractive index factor Nz of 0.5 or two eighth-wave plates with a sum of refractive index factors Nz of 1, the refractive index factor Nz in the existing circular polarizer can be compensated.
- the deflection of the optical axis of a quarter-wave plate of 0 or 1 compensates for a polar angle of 40° to 80°, and an azimuth angle of about 0°, about 90°, and 180°.
- the compensation layer when it is a single layer or double layer optical compensation film, it can compensate for the deflection caused by the transmission axis of the polarizing layer in the existing circular polarizer, thereby compensating for the polar angle of 40 .
- the azimuth angle is about 45°, about 135°, about 225°, and about 315°; the compensation layer uses a quarter-wave plate with a refractive index factor of Nz of 0.5 or a refractive index factor of Nz.
- the deflection and polarization of the optical axis of the quarter-wave plate in the existing circular polarizer can be compensated at the same time.
- the deflection of the transmission axis of the layer minimizes the reflection of ambient light obliquely incident on the polarizer.
- the polarizer of the present invention can prevent not only the opposite of the ambient light incident thereon.
- the radiation can also minimize the reflection of ambient light obliquely incident thereon, and the polarizer of the present invention can greatly improve the outdoor readability of the OLED display after being applied to the OLED display.
- FIG. 1 is a schematic structural view of an OLED display device in the prior art
- FIG. 2 is a schematic structural view of another OLED display device in the prior art
- FIG. 3 is a schematic structural view of the circular polarizer of FIG. 2;
- FIG. 4 is a schematic view showing light leakage of the circular polarizer shown in FIG. 3 at various viewing angles;
- FIG. 5 is an equatorial cross-sectional view of a Bangka ball when the ambient light is incident perpendicularly to the circular polarizer shown in FIG. 3;
- FIG. 6 is an ambient light incident at an azimuth angle of 0° and a polar angle of 60°. The equator section of the Bangka ball when the circular polarizer is shown;
- Figure 7 shows that the ambient light has an azimuth angle of 45. , the polar angle is 60.
- FIG. 8 is a schematic structural view of a polarizer according to Embodiment 2 of the present invention.
- FIG. 9 is a schematic diagram of light leakage at various viewing angles of the polarizer according to Embodiment 2 of the present invention
- FIG. 10 is a schematic diagram of light leakage at various viewing angles of the polarizer according to Embodiment 3 of the present invention
- Schematic diagram of the structure of the polarizer
- FIG. 12 is a schematic structural view of a polarizer according to Embodiment 5 of the present invention.
- FIG. 13 is a schematic structural view of a polarizer according to Embodiment 7 of the present invention.
- FIG. 14 is a schematic view showing light leakage of polarizers in various viewing angles according to Embodiment 8 of the present invention.
- FIG. 15 is a schematic structural view of a polarizer according to Embodiment 9 of the present invention.
- the embodiment provides a polarizer for use in combination with a reflective layer, the polarizer includes a polarizing layer and a compensation layer, and the compensation layer is disposed between the polarizing layer and the reflective layer and is incident in all directions.
- the reflective layer may be made of any material capable of reflecting light, for example, may be an electrode layer in an OLED display device.
- the reflective layer is incident on the reflective layer, reflected by the reflective layer, and passed through the compensation layer again, and then converted into linearly polarized light whose polarization direction is consistent with the absorption axis direction of the polarizing layer, thereby being polarized and then The polarizer is emitted, thereby improving the outdoor readability of the OLED display to which the polarizer is applied, and the viewing angle is improved.
- the light incident on the polarizer in each direction includes both light incident perpendicularly to the polarizer and light obliquely incident on the polarizer.
- the embodiment further provides a display device including the above polarizer.
- the display device may be any display device that needs to avoid external ambient light reflection and has a reflective layer, such as: a liquid crystal panel, an electronic paper, an OLED panel, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, Any product or part that has a display function, such as a navigator.
- Example 2
- the embodiment provides a polarizer for use in conjunction with a reflective layer (not shown).
- the positional relationship between the polarizer and the reflective layer is: incident direction of ambient light.
- the second time is a polarizer and a reflective layer.
- the polarizer includes a protective layer 701, a polarizing layer 702, and a compensation layer; the compensation layer is disposed between the polarizing layer and the reflective layer, and includes an optical compensation film 704 and a quarter wave plate 703, the optical compensation film 704 is disposed between the polarizing layer 702 and the quarter wave plate 703; the protective layer 701 is disposed on a surface of the polarizing layer 702 away from the side of the compensation layer and the reflective layer.
- the protective layer 701 needs to be subjected to surface treatment, and those skilled in the art can perform different surface treatments on the protective layer 701 according to actual needs, for example, hardening treatment to prevent the polarizer from being scratched; low anti- or anti-reverse processing, In order to reduce the surface reflectance of the polarizer, improve the outdoor readability; anti-glare treatment, to reduce the interference of ambient light, improve the picture clarity and energy of the display device used by the polarizer, reduce the screen reflection, and make the image more Clear and realistic.
- the quarter-wave plate 703 can employ a quarter-wave plate in the existing circular polarizer, that is, the refractive index factor Nz is 0 or 1.
- the optical compensation film 704 is made of a wave plate.
- the optical compensation film 704 has a refractive index factor Nz of 0.3 to 0.4, a phase retardation amount R0 of 240 nm to 300 nm, and an angle between the slow axis direction of the optical compensation film and the transmission axis direction of the polarizing layer is negative 5. To the positive 5. .
- the refractive index factor Nz of the optical compensation film 704 is 0.25, the phase retardation amount R0 is 275 nm, and the angle between the slow axis direction of the optical compensation film and the transmission axis direction of the polarizing layer is 0 or
- the refractive index factor Nz of the optical compensation film 704 is 0.7 to 0.8, the phase retardation amount R0 is 240 nm to 300 nm, and the angle between the slow axis direction of the optical compensation film and the transmission axis direction of the polarizing layer is positive 85. Up to 95. Or negative 95. To negative 85. .
- the refractive index factor Nz of the optical compensation film 704 is 0.75
- the phase retardation amount R0 is 275 nm
- the angle between the slow axis direction of the optical compensation film and the transmission axis direction of the polarizing layer is positive 90° or Negative 90°.
- Nz (nx-nz) I (nx-ny) (1)
- R0 (nx-ny) x d ( 2 )
- Nz is the refractive index factor
- R0 is the phase retardation amount
- nx is the refractive index in the X direction
- ny is the refractive index in the y direction
- nz is the refractive index in the z direction
- d is the thickness.
- the above parameters refer to the parameters of the optical compensation film 704.
- the angle between the two axes is positive, that is, one axis rotates counterclockwise to an angle parallel to the other axis; the angle between the two axes is negative, one Axis timing
- the needle is rotated to an angle that is parallel to the other axis. For example, if the angle between the slow axis direction of the optical compensation film and the transmission axis direction of the polarizing layer is plus 90°, the slow axis direction of the optical compensation film is rotated counterclockwise until it is parallel to the transmission axis direction of the polarizing layer. The angle is 90°.
- the transmission axis of the polarizing layer is perpendicular to the A point, that is, perpendicular to the intersection of the positive direction of the S1 axis and the circumference (as shown in FIG. 5).
- the polar angle is about 60° (for example, 40 to 80.) and the azimuth angle is about 45°
- the transmission axis of the polarizing layer is still perpendicular to the point A, but the point A has been from the S1 axis.
- the intersection of the positive direction and the circumference deviates (as shown in Figure 7).
- the compensation layer in the polarizer of this embodiment employs the optical compensation film 704, it is at the polar angle 60. Left and right (for example, 40 to 80.), the azimuth is 45.
- the optical axis of the optical compensation film 704 is at a position between the point A of FIG. 7 and the intersection of the positive direction of the S1 axis and the circumference, and the phase retardation amount R0 of the optical compensation film 704 is At 275 nm, it is exactly equal to the phase retardation amount of the half-wave plate.
- the optical compensation film 704 can bring the transmission axis direction of the polarizing layer from the point A to the intersection of the positive direction of the S1 axis and the circumference, thereby effectively
- the deflection caused by the transmission axis of the polarizing layer 702 when the ambient light is obliquely incident is compensated, and the oblique light leakage caused by the deflection of the transmission axis of the polarizing layer is solved, so that the light leakage of the polarizer at all angles is solved.
- Both have been improved, especially the light leakage with a polar angle of 40° to 80° and an azimuth of 45°.
- the polarizer of the embodiment can also reduce the polar angle by 40° to 80°, and the azimuth angle is about 135°, 225. Light leakage at left and right and around 315°.
- the phase retardation amount R0 is 275 nm, and the angle between the slow axis direction and the transmission axis direction of the polarizing layer is 0°
- the quarter-wave plate 703 has a refractive index factor Nz of 1, a phase retardation amount R0 of 137.5 nm, and an angle between the slow axis direction and the transmission axis direction of the polarizing layer is positive 45.
- the maximum light leakage rate of the polarizer is about 3.5%.
- the maximum light leakage rate of the polarizer of the embodiment is reduced by about 1.5% compared with the circular polarizer of the prior art, thereby improving the The outdoor readability of the OLED display to which the polarizer is applied, and the viewing angle has been improved.
- the embodiment further provides a display device including the above polarizer.
- Example 3 The difference between this embodiment and Embodiment 2 is that:
- the quarter-wave plate 703 has a refractive index factor Nz of 0.4 to 0.6, a phase retardation amount R0 of llOnm to 160 nm, and a slow-axis direction of the quarter-wave plate and a polarizing layer.
- the angle through the axis direction is positive 40. Up to 50. Or negative 50. To negative 40. .
- the quarter wave plate 703 has a refractive index factor Nz of 0.5, a phase retard amount
- R0 is 137.5 nm, and the angle between the slow axis direction of the quarter-wave plate and the transmission axis direction of the polarizing layer is positive 45. Or negative 45. .
- the compensation layer of the polarizer of the embodiment adopts the optical compensation film 704, which solves the problem of oblique light leakage caused by the deflection of the transmission axis of the polarizing layer, and particularly reduces the polar angle of 40° to 80°, and the azimuth angle.
- the optical axis when viewed from any orientation and angle, does not deflect, that is, it coincides with the direction of the optical axis when viewed in the vertical direction (coincides with the S2 axis in Fig. 5), and thus obliquely incident on the polarizer
- the light of the quarter wave plate does not deflect in the optical axis of the quarter wave plate.
- the refractive index factor Nz of the quarter wave plate in the circular polarizer is generally 0 or 1.
- the light incident obliquely incident on the existing circular polarizer causes the optical axis of the quarter wave plate to be deflected, so that the polarizer of the embodiment avoids one quarter of the ambient light obliquely incident.
- the optical axis of the wave plate The deflection of the original circular polarizer solves the problem of oblique light leakage caused by the deflection of the optical axis of the quarter-wave plate of the existing circular polarizer, so that the leakage of the polarizer at all angles is improved, especially It is reduced by a polar angle of 40° to 80.
- the azimuth is about 0 ° light leakage.
- the polarizer described in this embodiment can also reduce the polar angle from 40° to 80°.
- the azimuth is about 90°, about 180°, and about 270°. That is to say, the polarizer of the embodiment simultaneously compensates for the oblique light leakage caused by the deflection of the transmission axis of the polarizing layer and the deflection of the optical axis of the quarter-wave plate, and at the same time avoids the polarization.
- the film leaks in the vertical direction and in the oblique direction, and the viewing angle is very good.
- the refractive index factor Nz of the optical compensation film 704 is 0.25
- the phase retardation amount R0 is 275 nm
- the angle between the slow axis direction and the transmission axis direction of the polarizing layer is 0°
- the quarter-wave plate 703 has a refractive index factor Nz of 0.5 and a phase retardation amount R0 of 137.5 nm, and the angle between the bank axis direction and the transmission axis direction of the polarizing layer is positive 45.
- the maximum light leakage rate of the polarizer is about 0.12%. It can be seen that the polarizer of the embodiment is compared with the circular polarizer of the prior art. The maximum light leakage rate is reduced by about 4.88%, thereby improving the outdoor readability of the OLED display to which the polarizer is applied, and the viewing angle is very good.
- the embodiment further provides a display device including the above polarizer.
- Example 4 is the same as those in Embodiment 2, and are not described herein again.
- Example 4 is the same as those in Embodiment 2, and are not described herein again.
- the quarter wave plate 703 includes a first eighth wave plate 7031 and a second eighth wave plate 7032, and the first eighth wave plate 7031 and the second The polarity of the eighth wave plate 7032 is opposite; the sum of the refractive index factor Nz of the first eighth wave plate 7031 and the refractive index factor Nz of the second eighth wave plate 7032 is 0.85 to 1.15.
- the phase retardation amount R0 of the first eighth wave plate 7031 and the second eighth wave plate 7032 are both 55 nm to 80 nm, and the first eighth wave plate and the second eighth one
- the slow axis directions of the wave plates are the same, and the angle between the wave plates and the transmission axis direction of the polarizing layer is positive 40. Up to 50. Or negative 50. To negative 40. .
- the sum of the refractive index factor Nz of the first eighth-wave plate 7031 and the refractive index factor Nz of the second eighth-wave plate 7032 is 1, and the first eighth-wave plate 7031 And the phase delay amount R0 of the second eighth wave plate 7032 is both 69 nm, and the slow axis directions of the first eighth wave plate and the second eighth wave plate are the same, both with the polarizing layer
- the angle through the axis direction is positive 45. Or minus 45°.
- the compensation layer in the polarizer of the embodiment adopts the optical compensation film 704, and solves the problem of oblique light leakage caused by the deflection of the transmission axis of the polarizing layer, and particularly reduces the polar angle of 40° to 80.
- the azimuth angle is about 45°, about 135°, about 225°, and about 315°; at the same time, the first eighth wave plate 7031 and the second eighth wave plate 7032 of opposite polarity are used. Since the polarities of the two eighth-wave plates are opposite, the polar angle is 40° to 80° and the azimuth angle is 0.
- the deflection direction of the optical axis of the first eighth wave plate 7031 is opposite to the deflection direction of the optical axis of the second eighth wave plate 7032, thereby canceling each other.
- the problem of the oblique light leakage caused by the deflection of the optical axis of the quarter-wave plate of the prior circular polarizer is solved, so that the leakage of the polarizer at all angles is improved.
- the polar angle is reduced from 40° to 80.
- the azimuth is about 0°, about 90°, about 180°, and about 270°; and, because the refractive index is greater than 0 and less than 1
- the formation process of the thin film material is complicated, the cost is high, and the required phase retardation amount is large, so that the thickness thereof is large, and the implementation is difficult, if the first eighth wave plate 7031 and the second eighth one.
- the sum of the refractive index factors Nz of the wave plate 7032 is 1 (may be greater than 1), so that the refractive index factor Nz of the first eighth wave plate 7031 and the second eighth wave plate 7032 is 0 or 1 respectively.
- the range of the refractive index factor Nz of the first eighth wave plate 7031 and the second eighth wave plate 7032 is not in the range of (0, 1), so that the process cartridge is simple, the cost is low, and the like.
- each layer of the eighth-wave plate has a small phase retardation and a thin thickness, which is easy to implement. That is to say, the polarizer of the embodiment simultaneously compensates for the oblique light leakage caused by the deflection of the transmission axis of the polarizing layer and the deflection of the optical axis of the quarter-wave plate, and at the same time avoids the polarization. The film leaks in the vertical direction and in the oblique direction, and the viewing angle is very good.
- the phase retardation amount R0 is 275 nm
- the angle between the slow axis direction and the transmission axis direction of the polarizing layer is 0°
- the first eighth one is
- the wave plate 7031 has a refractive index factor Nz of 1, a phase retardation amount R0 of 68.75 nm, and an angle between the slow axis direction and the transmission axis direction of the polarizing layer is positive 45°
- the second eighth wave plate 7032 The refractive index factor Nz is 0, the phase retardation amount R0 is 68.75 nm, and the maximum light leakage rate of the polarizer is about 0.12% when the angle between the slow axis direction and the transmission axis direction of the polarizing layer is negative 45° ( That is, the light leakage of the polarizer corresponding to the parameters of the present section is the same as that of FIG.
- the embodiment further provides a display device including the above polarizer.
- Example 5 is the same as those in Embodiment 2, and are not described herein again.
- Example 5 is the same as those in Embodiment 2, and are not described herein again.
- the compensation layer in the polarizer does not include the optical compensation film 704 in Embodiment 2, but includes a first optical compensation film 7041 and a second optical compensation film 7042; the first optical compensation film 7041
- the second optical compensation film 7042 is disposed on the surface of the first optical compensation film 7041 near the reflective layer (or a quarter wave) on the surface of the polarizing layer 702 on the side close to the reflective layer (or the quarter wave plate 703). Sheet 703) on one side of the surface.
- the compensation film 7042 is made of wave plates.
- the refractive index factor Nz of the first optical compensation film 7041 is less than or equal to 0, and the refractive index factor Nz of the second optical compensation film 7042 is greater than or equal to 1, the first optical compensation film 7041 and the second optical compensation film.
- the phase retardation amount of 7042 is llOnm to 160 nm, and the angle between the slow axis directions of the first optical compensation film and the second optical compensation film and the transmission axis direction of the polarizing layer is positive 85. Up to 95° or negative 95. To negative 85. .
- the phase retardation amounts of the first optical compensation film 7041 and the second optical compensation film 7042 are both 137 nm, and the slow axis directions of the first optical compensation film and the second optical compensation film are both transmitted through the polarizing layer.
- the angle between the axes is positive 90. Or minus 90°.
- the refractive index factor Nz of the first optical compensation film 7041 is greater than or equal to 1, and the refractive index factor Nz of the second optical compensation film 7042 is less than or equal to 0, the first optical compensation film 7041 and the second optical compensation film.
- the phase retardation amount of 7042 is llOnm to 160 nm, and the angles of the slow axis directions of the first optical compensation film and the second optical compensation film are opposite to the transmission axis direction of the polarizing layer by a negative 5° to a positive 5°.
- the phase retardation amounts of the first optical compensation film 7041 and the second optical compensation film 7042 are both 137 nm, and the slow axis directions of the first optical compensation film and the second optical compensation film are both transmitted through the polarizing layer.
- the angle between the axes is 0°.
- the refractive index factor Nz of the first optical compensation film 7041 is less than or equal to 0, and the angle between the slow axis direction and the transmission axis direction of the polarizing layer is minus 5.
- the second optical compensation film 7042 has a refractive index factor Nz greater than or equal to 1, and an angle between the slow axis direction and the transmission axis direction of the polarizing layer is positive 85. Up to 95. Or negative 95. To negative 85.
- the first optical compensation film and the second optical compensation film have a phase retardation amount of llOnm to 160 nm.
- an angle between a slow axis direction of the first optical compensation film and a transmission axis direction of the polarizing layer is zero.
- the angle between the slow axis direction of the second optical compensation film and the transmission axis direction of the polarizing layer is positive 90° or minus 90°, and the phase retardation amounts of the first optical compensation film and the second optical compensation film are both for
- the refractive index factor Nz of the first optical compensation film 7041 is greater than or equal to 1, and the angle between the slow axis direction and the transmission axis direction of the polarizing layer is positive 85. To the positive 95. Or negative 95. To negative 85.
- the refractive index factor Nz of the second optical compensation film 7042 is less than or equal to 0, and the angle between the slow axis direction and the transmission axis direction of the polarizing layer is negative 5. To positive 5.
- the first optical compensation film and the first The phase retardation amounts of the two optical compensation films are all llOnm to 160 nm.
- an angle between a slow axis direction of the first optical compensation film and a transmission axis direction of the polarizing layer is positive 90. Or negative 90.
- the angle between the slow axis direction of the second optical compensation film and the transmission axis direction of the polarizing layer is 0°, and the phase retardation amounts of the first optical compensation film and the second optical compensation film are both 137 nm.
- the compensation layer in the polarizer of the embodiment adopts two layers of optical compensation films, and the refractive index factor of each layer of the optical compensation film is not in the range of (0, 1), which can not only solve the transmission axis due to the polarizing layer.
- the problem of oblique light leakage caused by deflection, especially the polar angle is 40° to 80°, and the azimuth angle is 45.
- the optical compensation film of each layer has a small phase retardation and a thin thickness, which is easy to implement.
- the second optical The refractive index factor Nz of the compensation film 7042 is 0, the phase retardation amount R0 is 137.5 nm, the angle between the slow axis direction and the transmission axis direction of the polarizing layer is 0°, and the refraction of the quarter-wave plate 703
- the rate factor Nz is 1, and the phase retardation amount R0 is 137.5 nm, and the angle between the slow axis direction and the transmission axis direction of the polarizing layer is positive 45.
- the maximum light leakage rate of the polarizer is about 3.5% (that is, the light leakage of the polarizer corresponding to the parameters of the present section is the same as that of FIG. 9), and the polarizer of the present embodiment and the prior art can be seen. Compared with the circular polarizer, the maximum light leakage rate is reduced by about 1.5%, thereby improving the outdoor readability of the OLED display to which the polarizer is applied, and the viewing angle is improved.
- the embodiment further provides a display device including the above polarizer.
- Example 6 is the same as those in Embodiment 2, and are not described herein again.
- Example 6 is the same as those in Embodiment 2, and are not described herein again.
- the quarter-wave plate 703 has a refractive index factor Nz of 0.4 to 0.6, a phase retardation amount R0 of llOnm to 160 nm, and a slow-axis direction of the quarter-wave plate and a polarizing layer.
- the angle through the axis direction is positive 40. Up to 50. Or negative 50. To negative 40. .
- the quarter wave plate 703 has a refractive index factor Nz of 0.5 and a phase retardation amount R0 of 137.5 nm, and the slow axis direction of the quarter wave plate and the transmission axis direction of the polarizing layer Clip The angle is positive 45. Or negative 45. .
- the polarizer of the embodiment adopts two layers of optical compensation film, which solves the problem of oblique light leakage caused by deflection of the transmission axis of the polarizing layer, and particularly reduces the polar angle of 40° to 80° and the azimuth angle is 45.
- the optical retardation film of each layer has a small phase retardation and a thin thickness, which is easy to implement;
- a quarter-wave plate with a factor Nz of 0.5 solves the problem of oblique light leakage caused by the deflection of the optical axis of the quarter-wave plate of the conventional circular polarizer, especially the polar angle is reduced to 40. ° to 80°, the azimuth angle is about 0°, about 90°, about 180°, and about 270°, that is, the polarizer described in this embodiment compensates for the deflection due to the transmission axis of the polarizing layer.
- the oblique optical leakage caused by the deflection of the optical axis of the quarter-wave plate avoids the leakage of the polarizer in the vertical direction and the oblique direction, and the viewing angle is very good.
- the second optical The refractive index factor Nz of the compensation film 7042 is 0, the phase retardation amount R0 is 137.5 nm, the angle between the slow axis direction and the transmission axis direction of the polarizing layer is 0°, and the refraction of the quarter-wave plate 703
- the rate factor Nz is 0.5
- the phase retardation amount R0 is 137.5 nm
- the angle between the slow axis direction and the transmission axis direction of the polarizing layer is positive 45.
- the maximum light leakage rate of the polarizer is about 0.12% (that is, the light leakage of the polarizer corresponding to the parameters of the present section is the same as that of FIG. 10), and it can be seen that the polarizer of the embodiment and the prior art Compared with the circular polarizer, the maximum light leakage rate is reduced by about 4.88%, thereby improving the outdoor readability of the OLED display to which the polarizer is applied, and the viewing angle is very good.
- the embodiment further provides a display device including the above polarizer.
- the quarter wave plate 703 includes a first eighth wave plate 7031 and a second eighth wave plate 7032, and the first eighth wave plate 7031 and the second The polarity of the eighth wave plate 7032 is opposite; the sum of the refractive index factor Nz of the first eighth wave plate 7031 and the refractive index factor Nz of the second eighth wave plate 7032 is 0.85 to 1.15.
- the first eighth wave plate 7031 And the phase delay amount R0 of the second eighth wave plate 7032 is 55 nm to 80 nm, and the slow axis directions of the first eighth wave plate and the second eighth wave plate are the same, both are polarized
- the angle of the layer in the direction of the transmission axis is positive 40. Up to 50. Or negative 50. To negative 40. .
- the sum of the refractive index factor Nz of the first eighth-wave plate 7031 and the refractive index factor Nz of the second eighth-wave plate 7032 is 1, and the first eighth-wave plate 7031 And the phase delay amount R0 of the second eighth wave plate 7032 is both 69 nm, and the slow axis directions of the first eighth wave plate and the second eighth wave plate are the same, both with the polarizing layer
- the angle through the axis direction is positive 45. Or minus 45°.
- the polarizer of the embodiment adopts two layers of optical compensation film, which solves the problem of oblique light leakage caused by deflection of the transmission axis of the polarizing layer, and particularly reduces the polar angle of 40° to 80° and the azimuth angle is 45.
- the optical retardation film of each layer has a small phase retardation and a thin thickness, which is easy to implement. At the same time, it is also polar.
- the opposite first octave wave plate 7031 and second octave wave plate 7032 solve the oblique light leakage caused by the deflection of the optical polar axis of the quarter wave plate of the prior circular polarizer.
- the problem, especially the reduced polar angle is 40° to 80.
- the azimuth is about 0°, about 90°, 180.
- the polarizer of the embodiment simultaneously compensates for the oblique light leakage caused by the deflection of the transmission axis of the polarizing layer and the deflection of the optical axis of the quarter-wave plate, and at the same time avoids the polarization.
- the film leaks in the vertical direction and in the oblique direction, and the viewing angle is very good.
- the second optical The refractive index factor Nz of the compensation film 7042 is 0, the phase retardation amount R0 is 137.5 nm, the angle between the slow axis direction and the transmission axis direction of the polarizing layer is 0°, and the first eighth wave plate 7031
- the refractive index factor Nz is 1, and the phase retardation amount R0 is 68.75 nm, and the angle between the slow axis direction and the transmission axis direction of the polarizing layer is positive 45.
- the second eighth-wave plate 7032 has a refractive index factor Nz of 0, a phase retardation amount R0 of 68.75 nm, and an angle between the slow axis direction and the transmission axis direction of the polarizing layer is minus 45°.
- the maximum light leakage rate of the polarizer is about 0.12% (that is, the light leakage of the polarizer corresponding to the parameters of the present section is the same as that of FIG. 10), and it can be seen that the polarizer of the present embodiment is different from the prior art. Compared with the polarizer, the maximum light leakage rate is reduced by about 4.88%, thus improving The outdoor readable display of the OLED display to which the polarizer is applied has a very good viewing angle.
- the embodiment further provides a display device including the above polarizer.
- the compensation layer includes a quarter wave plate, the quarter wave plate has a refractive index factor Nz of 0.4 to 0.6, a phase retardation amount R0 of llOnm to 160 nm, and the quarter wave plate is slow.
- the angle between the axial direction and the transmission axis direction of the polarizing layer is positive 40. Up to 50. Or negative 50. To negative 40. .
- the quarter wave plate has a refractive index factor Nz of 0.5, and the phase retardation amount R0 is
- the structure of the polarizer of the present embodiment is the same as that of the structure shown in Fig. 3, only the refractive index factor Nz of the quarter-wave plate is different, and the structural schematic of the polarizer described in this embodiment is not provided.
- the conventional circular polarizer is caused by the deflection of the optical axis direction of the quarter-wave plate.
- the problem of oblique light leakage makes the polarizer have a certain improvement in light leakage at all angles, especially the light leakage with a polar angle of 40° to 80° and an azimuth angle of about 0°.
- the polarizer of the embodiment can also reduce the polar angle of 40 to 80 and the azimuth of 90. Light leakage from left and right, around 180°, and around 270°.
- the polarizer further includes a protective layer disposed on a surface of the polarizing layer away from the side of the quarter wave plate.
- the phase retardation amount R0 is 137.5 nm
- the angle between the slow axis direction and the transmission axis direction of the polarizing layer is positive 45°.
- the maximum light leakage rate of the polarizer is about 1.15%. It can be seen that the maximum light leakage rate of the polarizer of the embodiment is reduced by about 3.85% compared with the circular polarizer of the prior art. The outdoor readability of the OLED display to which the polarizer is applied, and the viewing angle is greatly improved.
- the embodiment further provides a display device including the above polarizer.
- the compensation layer includes a quarter wave plate, and the quarter wave plate includes a first eighth wave plate 7031 and a second eighth wave plate 7032, and the first eighth one
- the wave plate 7031 is opposite in polarity to the second eighth wave plate 7032; the refractive index factor Nz of the first eighth wave plate 7031 and the refractive index factor Nz of the second eighth wave plate 7032 And a sum of 0.85 to 1.15, the phase retardation amount R0 of the first eighth wave plate 7031 and the second eighth wave plate 7032 are both 55 nm to 80 nm, and the first eighth wave plate and The slow axis directions of the second eighth wave plate are the same, and the angles between the second and eighth wave plates are positively 40 with respect to the transmission axis direction of the polarizing layer.
- the sum of the refractive index factor Nz of the first eighth-wave plate 7031 and the refractive index factor Nz of the second eighth-wave plate 7032 is 1, the first eighth-wave plate and
- the phase retardation amount R0 of the second eighth wave plate is 69 nm, and the slow axis directions of the first eighth wave plate and the second eighth wave plate are the same, and both are transmitted through the polarizing layer.
- the angle between the axes is positive 45° or negative 45
- the problem that the existing circular polarizer is deflected due to the deflection of the optical axis direction of the quarter wave plate thereof is solved, so that the light leakage of the polarizer at all angles is improved, especially reduced.
- the polar angle is 40° to 80°, the azimuth is about 0°, about 90°, about 180°, and about 270°; and, if the sum of the refractive index factors Nz of the two eighth-wave plates is 1 (may also be greater than 1), such that the refractive index factor Nz of the first eighth wave plate 7031 and the second eighth wave plate 7032 are respectively 0 or 1, that is, the two eighth waves
- the range of the refractive index factor of the sheet is not in the range of (0, 1), so the embodiment has the advantages of single process, low cost, and the phase retardation of each of the eighth-wave plates is small and the thickness is thin. , easy to implement.
- the polarizer further includes a protective layer 701 disposed on a surface of the polarizing layer 702 away from the side of the first eighth wave plate 7031.
- the phase retardation amount R0 is 68.75 nm
- the angle between the slow axis direction and the transmission axis direction of the polarizing layer is positive 45.
- the second eighth-wave plate 7032 has a refractive index factor Nz of 0, a phase retardation amount R0 of 68.75 nm, and an angle between the slow axis direction and the transmission axis direction of the polarizing layer is negative 45°.
- the maximum light leakage rate of the polarizer is about 1.15% (ie, the light leakage of the polarizer corresponding to the parameters of this paragraph is shown in each angle of view) 14 is the same), it can be seen that the maximum light leakage rate of the polarizer of the embodiment is reduced by about 3.85% compared with the circular polarizer of the prior art, thereby improving the outdoor environment of the OLED display to which the polarizer is applied. Readability, and the perspective has been greatly improved.
- the embodiment further provides a display device including the above polarizer.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Electroluminescent Light Sources (AREA)
- Polarising Elements (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/359,371 US9690025B2 (en) | 2013-03-28 | 2013-06-17 | Polarizer and display device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201310105035.7 | 2013-03-28 | ||
CN201310105035.7A CN103207426B (zh) | 2013-03-28 | 2013-03-28 | 一种偏光片及显示装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014153852A1 true WO2014153852A1 (zh) | 2014-10-02 |
Family
ID=48754701
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2013/077338 WO2014153852A1 (zh) | 2013-03-28 | 2013-06-17 | 偏光片及显示装置 |
Country Status (3)
Country | Link |
---|---|
US (1) | US9690025B2 (zh) |
CN (1) | CN103207426B (zh) |
WO (1) | WO2014153852A1 (zh) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103682158A (zh) * | 2013-12-10 | 2014-03-26 | 京东方科技集团股份有限公司 | 一种有机电致发光显示器件、其制备方法及显示装置 |
CN103682154B (zh) * | 2013-12-10 | 2016-01-27 | 京东方科技集团股份有限公司 | 一种有机电致发光显示器件及显示装置 |
KR101731676B1 (ko) | 2014-07-23 | 2017-05-02 | 삼성에스디아이 주식회사 | 편광판 및 이를 포함하는 광학표시장치 |
JP6520953B2 (ja) * | 2014-09-26 | 2019-05-29 | 日本ゼオン株式会社 | 円偏光板及びその製造方法、有機エレクトロルミネッセンス表示装置、並びに液晶表示装置 |
CN104570538B (zh) | 2015-01-27 | 2017-11-24 | 京东方科技集团股份有限公司 | 一种显示装置 |
KR102440078B1 (ko) * | 2015-03-10 | 2022-09-06 | 삼성디스플레이 주식회사 | 편광판 및 이를 포함하는 표시장치 |
CN105114866B (zh) * | 2015-08-31 | 2018-06-01 | 昆山龙腾光电有限公司 | 偏光板及其制作方法以及显示面板结构和显示装置 |
KR102586151B1 (ko) * | 2016-01-28 | 2023-10-06 | 삼성디스플레이 주식회사 | 편광 유닛 및 이를 포함하는 유기 발광 표시 장치 |
KR20180036864A (ko) * | 2016-09-30 | 2018-04-10 | 삼성디스플레이 주식회사 | 편광 유닛 및 이를 포함하는 표시 장치 |
KR20180061485A (ko) * | 2016-11-28 | 2018-06-08 | 삼성디스플레이 주식회사 | 플렉서블 표시 장치 |
US11391876B2 (en) * | 2017-02-28 | 2022-07-19 | Zeon Corporation | Optically anisotropic laminate, circularly polarizing plate and image display device |
CN107589546B (zh) * | 2017-10-23 | 2024-05-24 | 北京小米移动软件有限公司 | 光学系统及增强现实眼镜 |
CN110161687A (zh) * | 2018-02-12 | 2019-08-23 | 杭州太若科技有限公司 | Ar显示装置和穿戴式ar设备 |
EP3754409A4 (en) | 2018-02-12 | 2021-04-14 | Matrixed Reality Technology Co., Ltd. | AUGMENTED REALITY DEVICE AND OPTICAL SYSTEM USED IN IT |
CN108303805A (zh) * | 2018-03-16 | 2018-07-20 | 杨丛泽 | 一种智能立体影像盒 |
CN110767105B (zh) * | 2018-07-27 | 2021-01-22 | 京东方科技集团股份有限公司 | 一种显示模组及显示装置 |
CN111950335B (zh) * | 2019-05-17 | 2023-07-21 | 荣耀终端有限公司 | 叠层结构、显示面板及电子装置 |
CN112433286A (zh) * | 2019-08-26 | 2021-03-02 | 陕西坤同半导体科技有限公司 | 一种偏光片、显示装置 |
JP7402975B2 (ja) * | 2019-09-27 | 2023-12-21 | スリーエム イノベイティブ プロパティズ カンパニー | 反射偏光子および光学システム |
CN112164324B (zh) * | 2020-09-04 | 2022-07-15 | 中国科学技术大学 | 具有改变出射光偏振状态的有机发光显示装置 |
CN217506272U (zh) * | 2020-09-30 | 2022-09-27 | 上海悠睿光学有限公司 | 光学模组和近眼显示装置 |
CN112255794B (zh) * | 2020-10-28 | 2022-07-19 | 上海悠睿光学有限公司 | 光学模组、近眼显示装置和光投射方法 |
CN112993194B (zh) * | 2021-02-10 | 2022-05-17 | 武汉华星光电半导体显示技术有限公司 | 显示面板和显示装置 |
KR20230080146A (ko) * | 2021-11-29 | 2023-06-07 | 엘지디스플레이 주식회사 | 표시장치 및 그 제조방법 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1957294A (zh) * | 2004-05-21 | 2007-05-02 | 皇家飞利浦电子股份有限公司 | 具有平行排列型的液晶层的液晶显示设备 |
JP2007156085A (ja) * | 2005-12-05 | 2007-06-21 | Toshiba Matsushita Display Technology Co Ltd | 液晶表示装置 |
CN101276091A (zh) * | 2007-03-30 | 2008-10-01 | Nec液晶技术株式会社 | 具有触控式面板的液晶显示装置和终端装置 |
WO2012070808A2 (ko) * | 2010-11-23 | 2012-05-31 | 동우화인켐 주식회사 | 반사 방지용 편광판 및 이를 포함하는 화상표시장치 |
CN102707489A (zh) * | 2011-06-09 | 2012-10-03 | 京东方科技集团股份有限公司 | 液晶显示面板 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2318878A (en) | 1996-10-31 | 1998-05-06 | Sharp Kk | Reflective liquid crystal device |
JP4276392B2 (ja) * | 2001-07-25 | 2009-06-10 | 龍男 内田 | 円偏光板およびそれを用いた液晶ディスプレイ |
JP2004341207A (ja) | 2003-05-15 | 2004-12-02 | Koninkl Philips Electronics Nv | 液晶表示装置 |
JP2012032418A (ja) * | 2008-11-19 | 2012-02-16 | Sharp Corp | 円偏光板及び表示装置 |
-
2013
- 2013-03-28 CN CN201310105035.7A patent/CN103207426B/zh active Active
- 2013-06-17 US US14/359,371 patent/US9690025B2/en active Active
- 2013-06-17 WO PCT/CN2013/077338 patent/WO2014153852A1/zh active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1957294A (zh) * | 2004-05-21 | 2007-05-02 | 皇家飞利浦电子股份有限公司 | 具有平行排列型的液晶层的液晶显示设备 |
JP2007156085A (ja) * | 2005-12-05 | 2007-06-21 | Toshiba Matsushita Display Technology Co Ltd | 液晶表示装置 |
CN101276091A (zh) * | 2007-03-30 | 2008-10-01 | Nec液晶技术株式会社 | 具有触控式面板的液晶显示装置和终端装置 |
WO2012070808A2 (ko) * | 2010-11-23 | 2012-05-31 | 동우화인켐 주식회사 | 반사 방지용 편광판 및 이를 포함하는 화상표시장치 |
CN102707489A (zh) * | 2011-06-09 | 2012-10-03 | 京东方科技集团股份有限公司 | 液晶显示面板 |
Also Published As
Publication number | Publication date |
---|---|
CN103207426B (zh) | 2015-09-16 |
US20150219814A1 (en) | 2015-08-06 |
US9690025B2 (en) | 2017-06-27 |
CN103207426A (zh) | 2013-07-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2014153852A1 (zh) | 偏光片及显示装置 | |
US8531765B2 (en) | Circularly polarizing plate and display device | |
US20180358576A1 (en) | Polarization optical assembly, oled device and preparation method thereof, and display device | |
CN103389536B (zh) | 多层光学膜、光学膜的制造方法以及显示装置 | |
US20170031206A1 (en) | Sunlight readable lcd with uniform in-cell retarder | |
US10437106B2 (en) | Liquid crystal display panel wherein a thickness direction retardation of at least one of a first, second, third, and fourth phase difference plate has a negative value | |
JP6929586B2 (ja) | 反射防止用光学フィルタ及び有機発光装置 | |
US20100277660A1 (en) | Wire grid polarizer with combined functionality for liquid crystal displays | |
WO2016045260A1 (zh) | 发光二极管显示面板及其制造方法 | |
JP2004271786A (ja) | 液晶表示装置 | |
CN108922903B (zh) | 一种有机发光显示面板及显示装置 | |
US10175534B2 (en) | Compensation film and optical film and display device | |
KR101665598B1 (ko) | 편광판 및 이를 구비하는 표시 장치 | |
KR20160055431A (ko) | 편광필름 및 그를 구비하는 플렉서블 표시장치 | |
WO2013086890A1 (zh) | 具有视角补偿的液晶显示器 | |
EP3422057A1 (en) | Polarized type viewing angle control element, polarized type viewing angle control display module, and polarized type viewing angle control light source module | |
CN105629543B (zh) | 一种柔性液晶显示面板及显示装置 | |
JP2021063984A (ja) | 光学積層体及びそれを用いた液晶表示装置 | |
CN110262133B (zh) | 具有cop延迟器和cop匹配rm的低反射率lcd | |
TW201825934A (zh) | 抗反射光學濾波器及有機發光裝置 | |
US10338426B2 (en) | Light diffusion member, base material for light diffusion member production, display device using same and method for producing light diffusion member | |
WO2014107886A1 (zh) | 用于液晶面板的补偿系统及液晶显示装置 | |
US20190278139A1 (en) | Lcd with reactive mesogen internal retarder and related fabrication methods | |
WO2017193444A1 (zh) | 液晶显示装置 | |
JP2001195003A (ja) | 表示素子 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 14359371 Country of ref document: US |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 13880336 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
32PN | Ep: public notification in the ep bulletin as address of the adressee cannot be established |
Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205 DATED 07-12-2015) |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 13880336 Country of ref document: EP Kind code of ref document: A1 |