WO2025023326A1 - 防眩シート、シート物品、偏光板、表示装置、及び防眩物品 - Google Patents

防眩シート、シート物品、偏光板、表示装置、及び防眩物品 Download PDF

Info

Publication number
WO2025023326A1
WO2025023326A1 PCT/JP2024/026851 JP2024026851W WO2025023326A1 WO 2025023326 A1 WO2025023326 A1 WO 2025023326A1 JP 2024026851 W JP2024026851 W JP 2024026851W WO 2025023326 A1 WO2025023326 A1 WO 2025023326A1
Authority
WO
WIPO (PCT)
Prior art keywords
less
glare
image clarity
sheet
antiglare
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.)
Pending
Application number
PCT/JP2024/026851
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
清弘 高地
亜矢 内藤
芳成 松田
行光 岩田
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.)
Dai Nippon Printing Co Ltd
Original Assignee
Dai Nippon Printing 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 Dai Nippon Printing Co Ltd filed Critical Dai Nippon Printing Co Ltd
Priority to JP2025535886A priority Critical patent/JPWO2025023326A1/ja
Priority to CN202480049246.XA priority patent/CN121569220A/zh
Priority to KR1020267004582A priority patent/KR20260038927A/ko
Publication of WO2025023326A1 publication Critical patent/WO2025023326A1/ja
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties
    • B32B7/023—Optical properties
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements

Definitions

  • This disclosure relates to anti-glare sheets, sheet articles, polarizing plates, display devices, and anti-glare articles.
  • Anti-glare sheets are known, as disclosed in Patent Documents 1 to 3. As an example, anti-glare sheets can be applied to display devices. Examples of display devices include display devices incorporated in televisions, notebook PCs, and desktop PCs, and display devices incorporated in smartphones and tablets.
  • the anti-glare sheet forms the outermost surface of the display device.
  • the anti-glare sheet imparts anti-glare properties to the display device. Anti-glare properties are a property that suppresses the reflection of lighting and background objects such as people.
  • the anti-glare properties can be improved by strengthening the light diffusion function of the anti-glare layer.
  • glare becomes more likely to occur.
  • Glare is a phenomenon in which minute variations in brightness are observed on the outermost surface of a display device. When glare occurs, the visibility of the image deteriorates.
  • the anti-glare sheet shown in Patent Document 1 has too low anti-glare properties, resulting in reflections.
  • the anti-glare sheets shown in Patent Documents 2 and 3 cause glare. This disclosure aims to provide both anti-glare properties and suppress glare.
  • a first antiglare sheet includes: An antiglare sheet including a first surface and a second surface facing each other in a first direction, An antiglare layer including a concave-convex surface is provided, the uneven surface faces an opposite side to the second surface in the first direction, the ratio of the image clarity C(0.125) in a transmission method using an optical comb having a width of 0.125 mm to the image clarity C(2.0) in a transmission method using an optical comb having a width of 2.0 mm is 0.70 or more; The transmission haze is 15% or more and 40% or less.
  • a second antiglare sheet includes: An antiglare sheet including a first surface and a second surface facing each other in a first direction, An antiglare layer including a concave-convex surface is provided, the uneven surface faces an opposite side to the second surface in the first direction, the ratio of the image clarity C(0.125) in a transmission method using an optical comb having a width of 0.125 mm to the image clarity C(2.0) in a transmission method using an optical comb having a width of 2.0 mm is 0.25 or more; The transmission haze is 15% or more and 40% or less, An antiglare sheet having an external haze of more than 14% and not more than 35%.
  • a third antiglare sheet includes: An antiglare sheet including a first surface and a second surface facing each other in a first direction, An antiglare layer including a concave-convex surface is provided, the uneven surface faces an opposite side to the second surface in the first direction,
  • the ratio of the image clarity C(2.0) minus the image clarity C(0.125) to the average of the image clarity C(2.0) obtained by a transmission method using an optical comb having a width of 2.0 mm and the image clarity C(0.125) obtained by a transmission method using an optical comb having a width of 0.125 mm is 1.00 or less.
  • a fourth antiglare sheet includes: An antiglare sheet including a first surface and a second surface facing each other in a first direction, An antiglare layer including a concave-convex surface is provided, the uneven surface faces an opposite side to the second surface in the first direction,
  • the value obtained by subtracting the image clarity C (0.125) obtained by the transmission method using an optical comb having a width of 0.125 mm from the image clarity C (2.0) obtained by the transmission method using an optical comb having a width of 2.0 mm is 11% or less.
  • a fifth antiglare sheet includes: An antiglare sheet including a first surface and a second surface facing each other in a first direction, An antiglare layer including a concave-convex surface is provided, the uneven surface faces an opposite side to the second surface in the first direction,
  • the coefficients of variation of the image clarity C(2.0) obtained by the transmission method using an optical comb having a width of 2.0 mm, the image clarity C(1.0) obtained by the transmission method using an optical comb having a width of 1.0 mm, the image clarity C(1.0) obtained by the transmission method using an optical comb having a width of 0.5 mm, and the image clarity C(0.125) obtained by the transmission method using an optical comb having a width of 0.125 mm are 0.70 or less.
  • a sixth antiglare sheet includes: An antiglare sheet including a first surface and a second surface facing each other in a first direction, An antiglare layer including a concave-convex surface is provided, the uneven surface faces an opposite side to the second surface in the first direction,
  • the standard deviation of the image clarity C(2.0) obtained by the transmission method using an optical comb having a width of 2.0 mm, the image clarity C(1.0) obtained by the transmission method using an optical comb having a width of 1.0 mm, the image clarity C(1.0) obtained by the transmission method using an optical comb having a width of 0.5 mm, and the image clarity C(0.125) obtained by the transmission method using an optical comb having a width of 0.125 mm is 4.9% or less.
  • a sheet article according to one embodiment of the present disclosure comprises:
  • the apparatus includes a plurality of antiglare sheets according to any one of the embodiments of the present disclosure.
  • the polarizing plate according to one embodiment of the present disclosure comprises: An antiglare sheet according to one embodiment of the present disclosure; and a polarizer superimposed on the antiglare sheet.
  • a display device includes: An antiglare sheet according to one embodiment of the present disclosure; and a display element superimposed on the antiglare sheet.
  • An anti-glare article according to one embodiment of the present disclosure includes: An article to be joined; and any one of the antiglare sheets according to an embodiment of the present disclosure.
  • the anti-glare sheet can provide excellent anti-glare properties and suppress glare.
  • FIG. 1 is a diagram for explaining an embodiment of the present invention, and is a cross-sectional view showing an example of an antiglare sheet.
  • FIG. 2 is a cross-sectional view showing another example of the antiglare sheet.
  • FIG. 3 is a cross-sectional view showing still another example of the antiglare sheet.
  • FIG. 4 is a perspective view showing an example of a sheet article including an antiglare sheet.
  • FIG. 5 is a cross-sectional view showing an example of a polarizing plate including an antiglare sheet.
  • FIG. 6 is a cross-sectional view showing an example of a display device including an antiglare sheet.
  • FIG. 7 is a cross-sectional view showing an example of an anti-glare article including an anti-glare sheet.
  • FIG. 8 is a diagram for explaining a method for measuring the glare degree.
  • An embodiment of the present disclosure relates to the following ⁇ 1> to ⁇ 23>.
  • An antiglare sheet including a first surface and a second surface facing each other in a first direction, An antiglare layer including a concave-convex surface is provided, the uneven surface faces an opposite side to the second surface in the first direction, the ratio of the image clarity C(0.125) in a transmission method using an optical comb having a width of 0.125 mm to the image clarity C(2.0) in a transmission method using an optical comb having a width of 2.0 mm is 0.70 or more; An antiglare sheet having a transmission haze of 15% or more and 40% or less.
  • ⁇ 2> The antiglare sheet according to ⁇ 1>, wherein the external haze is greater than 14% and less than or equal to 35%.
  • An antiglare sheet including a first surface and a second surface facing each other in a first direction, An antiglare layer including a concave-convex surface is provided, the uneven surface faces an opposite side to the second surface in the first direction, the ratio of the image clarity C(0.125) in a transmission method using an optical comb having a width of 0.125 mm to the image clarity C(2.0) in a transmission method using an optical comb having a width of 2.0 mm is 0.25 or more; The transmission haze is 15% or more and 40% or less, An antiglare sheet having an external haze of more than 14% and not more than 35%.
  • the ratio of the image clarity C(2.0) minus the image clarity C(0.125) to the average of the image clarity C(2.0) and the image clarity C(0.125) is 1.00 or less.
  • An antiglare sheet including a first surface and a second surface facing each other in a first direction, An antiglare layer including a concave-convex surface is provided, the uneven surface faces an opposite side to the second surface in the first direction, An antiglare sheet, in which the ratio of the image clarity C(2.0) minus the image clarity C(0.125) to the average of the image clarity C(2.0) obtained by a transmission method using an optical comb having a width of 2.0 mm and the image clarity C(0.125) obtained by a transmission method using an optical comb having a width of 0.125 mm is 1.00 or less.
  • ⁇ 6> ⁇ 5> The antiglare sheet according to any one of ⁇ 1> to ⁇ 5>, wherein a value obtained by subtracting the image clarity C(0.125) from the image clarity C(2.0) is 11% or less.
  • An antiglare sheet including a first surface and a second surface facing each other in a first direction, An antiglare layer including a concave-convex surface is provided, the uneven surface faces an opposite side to the second surface in the first direction, An antiglare sheet in which the value obtained by subtracting the image clarity C (0.125) obtained by a transmission method using an optical comb having a width of 0.125 mm from the image clarity C (2.0) obtained by a transmission method using an optical comb having a width of 2.0 mm is 11% or less.
  • the image clarity C(2.0), the image clarity C(1.0) in a transmission method using an optical comb having a width of 1.0 mm, the image clarity C(0.5) in a transmission method using an optical comb having a width of 0.5 mm, and the image clarity C(0.125) have a coefficient of variation of 0.70 or less.
  • An antiglare sheet including a first surface and a second surface facing each other in a first direction, An antiglare layer including a concave-convex surface is provided, the uneven surface faces an opposite side to the second surface in the first direction, An antiglare sheet, wherein the coefficient of variation among the image clarity C(2.0) obtained by a transmission method using an optical comb having a width of 2.0 mm, the image clarity C(1.0) obtained by a transmission method using an optical comb having a width of 1.0 mm, the image clarity C(1.0) obtained by a transmission method using an optical comb having a width of 0.5 mm, and the image clarity C(0.125) obtained by a transmission method using an optical comb having a width of 0.125 mm, is 0.70 or less.
  • the standard deviation of the image clarity C(2.0), the image clarity C(1.0) in a transmission method using an optical comb having a width of 1.0 mm, the image clarity C(1.0) in a transmission method using an optical comb having a width of 0.5 mm, and the image clarity C(0.125) is 4.9% or less.
  • An antiglare sheet including a first surface and a second surface facing each other in a first direction, An antiglare layer including a concave-convex surface is provided, the uneven surface faces an opposite side to the second surface in the first direction, An antiglare sheet in which the standard deviation of image clarity C(2.0) obtained by a transmission method using an optical comb having a width of 2.0 mm, image clarity C(1.0) obtained by a transmission method using an optical comb having a width of 1.0 mm, image clarity C(1.0) obtained by a transmission method using an optical comb having a width of 0.5 mm, and image clarity C(0.125) obtained by a transmission method using an optical comb having a width of 0.125 mm is 4.9% or less.
  • the image clarity C(2.0) is 30% or more and 65% or less.
  • the image clarity C(0.125) is 5% or more and 65% or less.
  • the sum of the image clarity C(2.0), the image clarity C(1.0) in a transmission method using an optical comb having a width of 1.0 mm, the image clarity C(1.0) in a transmission method using an optical comb having a width of 0.5 mm, and the image clarity C(0.125) is 50% or more and 235% or less.
  • ⁇ 16> The antiglare sheet according to any one of ⁇ 1> to ⁇ 15>, wherein the internal haze is 5% or less.
  • ⁇ 17> The antiglare sheet according to any one of ⁇ 1> to ⁇ 16>, wherein a ratio of internal haze to transmission haze is 0.20 or less.
  • the antiglare layer contains a binder resin and particles, The antiglare sheet according to any one of ⁇ 1> to ⁇ 17>, wherein the binder resin includes a cured resin.
  • a sheet article comprising a plurality of antiglare sheets according to any one of ⁇ 1> to ⁇ 18>.
  • An article to be joined comprising: the antiglare sheet according to any one of ⁇ 1> to ⁇ 18> joined to the article to be joined.
  • the normal direction of a sheet-like (film-like, plate-like) member refers to the direction parallel to the normal or perpendicular line to the plate surface of the target sheet-like (film-like, plate-like) member.
  • “Sheet surface (film surface, plate surface)” refers to the surface that coincides with the target sheet-like (film-like, plate-like) member when the target sheet-like (film-like, plate-like) member is viewed overall and globally.
  • the numerical range may be formed by combining any one upper limit candidate with any one lower limit candidate.
  • Parameter B may be A1 or more, A2 or more, or A3 or more.
  • Parameter B may be A4 or less, A5 or less, or A6 or less.”
  • the numerical range of parameter B may be A1 or more and A4 or less, A1 or more and A5 or less, A1 or more and A6 or less, A2 or more and A4 or less, A2 or more and A5 or less, A2 or more and A6 or less, A3 or more and A4 or less, A3 or more and A5 or less, or A3 or more and A6 or less.
  • an antiglare sheet 10 includes a first surface 11 and a second surface 12.
  • the first surface 11 and the second surface 12 face each other in a first direction D1.
  • the antiglare sheet 10 includes an antiglare layer 30.
  • the antiglare layer 30 includes an uneven surface 31X.
  • the first surface 11 may include an uneven surface 11X.
  • the uneven surface 11X may include unevenness corresponding to the unevenness of the uneven surface 31X. That is, the uneven surface 11X may include convex portions at positions facing the convex portions of the uneven surface 31X in the first direction D1.
  • the uneven surface 11X may include concave portions at positions facing the concave portions of the uneven surface 31X in the first direction D1.
  • the convex portions of the uneven surface 11X may be lower than the convex portions of the uneven surface 31X.
  • the concave portions of the uneven surface 11X may be shallower than the concave portions of the uneven surface 31X.
  • the first surface 11 faces the opposite side to the second surface 12 in the first direction D1.
  • the first surface 11 faces a first side in the first direction D1.
  • the second surface 12 faces a second side in the first direction D1.
  • the uneven surface 31X faces a first side in the first direction D1.
  • the uneven surface 31X faces the same side as the first surface 11 in the first direction D1.
  • the uneven surface 31X constitutes the first surface 11.
  • the uneven surface 31X constitutes the uneven surface 11X.
  • the anti-glare sheet 10 can change the direction of travel of incident light due to the uneven surfaces 11X, 31X.
  • the anti-glare sheet 10 may have a light diffusion function that diffuses incident light due to the uneven surfaces 11X, 31X.
  • the anti-glare sheet 10 may reflect incident light in a direction other than the specular reflection direction due to the uneven surfaces 11X, 31X.
  • the anti-glare sheet 10 may diffusely reflect at least a portion of incident light due to the uneven surfaces 11X, 31X.
  • the optical action of the uneven surfaces 11X, 31X allows the anti-glare layer 30 to exhibit an anti-glare function.
  • the optical action of the uneven surfaces 11X, 31X allows the anti-glare sheet 10 to have anti-glare properties.
  • the anti-glare properties make it possible to prevent the background of the environment in which the anti-glare sheet 10 is placed, such as a lighting device, from being reflected on the anti-glare sheet. By preventing the reflection of the background, the area behind the anti-glare sheet can be clearly observed. For example, when the anti-glare sheet is positioned on the image forming surface of a display element, it is possible to prevent the reflected image from being superimposed on the image formed by the display element. Therefore, the image displayed by the display element can be clearly observed.
  • the anti-glare properties can be improved by enhancing the light diffusion function of the uneven surface.
  • glare becomes more likely to occur.
  • Glare is a phenomenon in which minute variations in brightness are observed in the anti-glare sheet.
  • display elements have become increasingly high-definition. When combined with high-definition display elements, the problem of glare has become more pronounced.
  • the concave or convex parts of the uneven surface can act as lenses to form bright spots. These bright spots are thought to be the cause of glare.
  • the anti-glare sheet and the anti-glare layer may have an internal diffusion function.
  • the anti-glare sheet and the anti-glare layer may have an internal haze.
  • the internal diffusion function can suppress the occurrence of bright spots caused by the lens function of the surface unevenness.
  • the anti-glare properties of the anti-glare sheet are enhanced by the internal diffusion function, the contours of the image observed through the anti-glare sheet become unclear.
  • the anti-glare properties of the anti-glare sheet are enhanced by the internal diffusion function, the anti-glare sheet becomes cloudy.
  • this anti-glare sheet is applied to a display device, the contours of the displayed image become unclear and the contrast of the image decreases.
  • the thickness of the anti-glare sheet and anti-glare layer will increase.
  • the anti-glare sheet 10 of this embodiment has been designed to achieve both excellent anti-glare properties and suppression of glare, as described below.
  • the antiglare sheet 10 has the following features.
  • the combination of features (A) and (B) allows the anti-glare sheet 10 to have excellent anti-glare properties and to effectively suppress glare.
  • the background facing the anti-glare sheet 10 such as a lighting device, can be effectively prevented from being reflected in the anti-glare sheet 10.
  • the background can be effectively prevented from being observed within the anti-glare sheet 10.
  • the back of the transparent anti-glare sheet 10 can be clearly confirmed.
  • the characteristic (A) specifies the transmission haze of the antiglare sheet 10.
  • the transmission haze is an index of the antiglare properties.
  • the D65 light source is used to measure the transmission haze (%). Before measuring the transmission haze of the anti-glare sheet 10, the D65 light source is turned on for 15 minutes to stabilize the output of the D65 light source. The angle of incidence on the measurement sample when measuring the transmission haze is 0°. The incident surface when measuring the transmission haze of the anti-glare sheet 10 is the second surface 12 of the anti-glare sheet 10. The measurement environment when measuring the transmission haze is a temperature of 23°C ⁇ 2°C and a relative humidity of 50% ⁇ 5%. The measurement sample is placed in the measurement environment for 16 hours before starting the measurement. Other measurement conditions when measuring the transmission haze are in accordance with JIS K7136:2000.
  • Transmitted haze is the arithmetic average of five measured values.
  • the five measured values are taken at five measurement positions on the anti-glare sheet being evaluated.
  • the five measurement positions are located at least 10 mm apart from each other.
  • a lower limit for the transmission haze is set.
  • the transmission haze of the anti-glare sheet 10 may be 15% or more, 16% or more, 20% or more, 22% or more, 24% or more, 25% or more, 26% or more, or 27% or more.
  • an upper limit for the transmission haze is set.
  • glare can be effectively suppressed.
  • an upper limit for the transmission haze clouding of the anti-glare sheet 10 can be suppressed.
  • an upper limit for the transmission haze the contour of an object observed through the anti-glare sheet 10 can be made clear.
  • the transmission haze of the anti-glare sheet 10 may be 40% or less, 35% or less, 33% or less, 32% or less, 31% or less, or 30% or less.
  • the transmission haze may be 15% to 40%, 15% to 35%, 15% to 33%, 15% to 32%, 15% to 31%, or 15% to 30%.
  • the transmission haze may be 16% to 40%, 16% to 35%, 16% to 33%, 16% to 32%, 16% to 31%, or 16% to 30%.
  • the transmission haze may be 20% to 40%, 20% to 35%, 20% to 33%, 20% to 32%, 20% to 31%, or 20% to 30%.
  • the transmission haze may be 22% to 40%, 22% to 35%, 22% to 33%, 22% to 32%, 22% to 31%, or 22% to 30%.
  • the transmission haze may be 24% to 40%, 24% to 35%, 24% to 33%, 24% to 32%, 24% to 31%, or 24% to 30%.
  • the transmission haze may be 25% to 40%, 25% to 35%, 25% to 33%, 25% to 32%, 25% to 31%, or 25% to 30%.
  • the transmission haze may be 26% to 40%, 26% to 35%, 26% to 33%, 26% to 32%, 26% to 31%, or 26% to 30%.
  • the transmission haze may be 27% to 40%, 27% to 35%, 27% to 33%, 27% to 32%, 27% to 31%, or 27% to 30%.
  • Feature (B) specifies the image clarity (%) of the antiglare sheet 10.
  • the image clarity is measured by transmitted light.
  • the image clarity measured by the transmission method is an index for evaluating the clarity of an image formed by transmitted light.
  • the image clarity using the transmission method is measured in accordance with JIS K7374:2007.
  • the image clarity is calculated from the measured amount of light transmitted through the measurement sample.
  • the amount of light transmitted through the measurement sample is measured after passing through an optical comb.
  • the optical comb includes a transparent portion and a light-shielding portion.
  • the transparent portion and the light-shielding portion are arranged in the arrangement direction.
  • the transparent portion and the light-shielding portion extend in an elongated shape in a direction perpendicular to the arrangement direction.
  • the "width" of the optical comb means the width of the light-shielding portion along the arrangement direction.
  • the amount of light transmitted through the measurement sample is measured while moving the optical comb in the arrangement direction.
  • the maximum light amount M and the minimum light amount m are identified from the measured values.
  • Image clarity C(k) is expressed by the following formula.
  • Image clarity is the ratio of the difference between the maximum light amount M and the minimum light amount m to the sum of the maximum light amount M and the minimum light amount m.
  • the ratio which is image clarity is expressed as a percentage.
  • the unit of image clarity is %.
  • image clarity C(k) means image clarity obtained by a transmission method using an optical comb having a width of k (mm).
  • C(k) ⁇ (M-m)/(M+m) ⁇ 100 [%]
  • the measurement environment for measuring image clarity is a temperature of 23°C ⁇ 2°C and a relative humidity of 50% ⁇ 5%.
  • the measurement sample is placed in the measurement environment for 16 hours before starting the measurement.
  • the image clarity is the arithmetic mean of five measured values.
  • the five measured values are taken at five measurement positions on the anti-glare sheet being evaluated.
  • the five measurement positions are located at least 10 mm apart from each other.
  • feature (B) the numerical range of the ratio of image clarity measured using optical combs with different widths is specified.
  • the widths of the optical comb are specified as 0.125 mm, 0.25 mm, 0.5 mm, 1.0 mm, and 2.0 mm.
  • feature (B) specifies the ratio of image clarity C (0.125) using an optical comb with a width of 0.125 mm to image clarity C (2.0) using an optical comb with a width of 2.0 mm.
  • the ratio of image clarity using an optical comb with the minimum width specified by JIS to image clarity using an optical comb with the maximum width specified by JIS is specified.
  • image clarity C (0.125) to image clarity C (2.0) is also simply called the image clarity ratio.
  • an anti-glare sheet with a transmission haze of 5% or less can have a large image clarity ratio.
  • the image clarity ratio of the anti-glare sheets according to Examples 1 to 8 of the above-mentioned Patent Document 1 JP2013-195606A is large. This phenomenon is caused by the fact that the image clarity of a film that does not have diffusivity is a very large value, regardless of the width of the optical comb.
  • the effect of improving the anti-glare properties of the anti-glare sheet 10 while suppressing deterioration of visibility due to glare by setting the image clarity ratio to 0.70 or more in addition to characteristic (A) can be said to be unique and goes beyond the range predicted by the state of the art.
  • the image clarity C (0.125) using an optical comb with a width of 0.125 mm is increased to the same extent as the image clarity C (2.0) using an optical comb with a width of 2.0 mm.
  • the light diffused by the anti-glare sheet 10 can be blocked by the light blocking portion of the optical comb with a width of 0.125 mm.
  • the anti-glare sheet 10 having a combination of features (A) and (B) is endowed with a denser and more uniform light diffusion function compared to conventional anti-glare sheets.
  • This dense and homogeneous light diffusion can diffuse and reflect light to an extent that the background is sufficiently prevented from being reflected on the anti-glare sheet 10.
  • This dense and homogeneous light diffusion can make bright spots caused by the lens effect less noticeable. This can effectively suppress glare.
  • this dense and homogeneous light diffusion can avoid excessive light diffusion. Therefore, it is possible to effectively suppress the contour of the object observed through the anti-glare sheet 10 from becoming unclear. Furthermore, it is possible to effectively suppress the anti-glare sheet 10 from becoming cloudy and the contrast of the object observed through the anti-glare sheet 10 from decreasing. In this way, it is presumed that the dense and homogeneous light diffusion can achieve both improved anti-glare properties and suppression of reduced visibility caused by glare, etc.
  • the image clarity using optical combs with widths of 0.25 mm, 0.5 mm, and 1.0 mm was likely to be significantly smaller than image clarity C (2.0) and significantly larger than image clarity C (0.125).
  • the image clarity using optical combs with widths of 0.25 mm, 0.5 mm, and 1.0 mm was large, similar to image clarity C (0.125).
  • the image clarity using optical combs with widths of 0.25 mm, 0.5 mm, and 1.0 mm was close to image clarity C (2.0). This phenomenon is consistent with the above speculation.
  • This image clarity ratio (C(0.125)/C(2.0)) may be 0.70 or more, 0.75 or more, 0.80 or more, 0.85 or more, 0.88 or more, 0.90 or more, 0.91 or more, 0.92 or more, 0.93 or more, 0.94 or more, or 0.95 or more.
  • the image clarity ratio (C(0.125)/C(2.0)) may be 1.0 or less, or may be less than 1.0. From the viewpoint of imparting sufficient antiglare properties to the antiglare sheet 10, the image clarity ratio (C(0.125)/C(2.0)) may be 0.98 or less, 0.97 or less, or 0.96 or less.
  • the image clarity ratio may be 0.70 or more and 1.0 or less, 0.75 or more and 1.0 or less, 0.80 or more and 1.0 or less, 0.85 or more and 1.0 or less, 0.88 or more and 1.0 or less, 0.90 or more and 1.0 or less, 0.91 or more and 1.0 or less, 0.92 or more and 1.0 or less, 0.93 or more and 1.0 or less, 0.94 or more and 1.0 or less, or 0.95 or more and 1.0 or less.
  • the image clarity ratio may be 0.70 or more and less than 1.0, 0.75 or more and less than 1.0, 0.80 or more and less than 1.0, 0.85 or more and less than 1.0, 0.88 or more and less than 1.0, 0.90 or more and less than 1.0, 0.91 or more and less than 1.0, 0.92 or more and less than 1.0, 0.93 or more and less than 1.0, 0.94 or more and less than 1.0, or 0.95 or more and less than 1.0.
  • the image clarity ratio may be 0.70 or more and 0.98 or less, 0.75 or more and 0.98 or less, 0.80 or more and 0.98 or less, 0.85 or more and 0.98 or less, 0.88 or more and 0.98 or less, 0.90 or more and 0.98 or less, 0.91 or more and 0.98 or less, 0.92 or more and 0.98 or less, 0.93 or more and 0.98 or less, 0.94 or more and 0.98 or less, or 0.95 or more and 0.98 or less.
  • the image clarity ratio may be 0.70 or more and 0.97 or less, 0.75 or more and 0.97 or less, 0.80 or more and 0.97 or less, 0.85 or more and 0.97 or less, 0.88 or more and 0.97 or less, 0.90 or more and 0.97 or less, 0.91 or more and 0.97 or less, 0.92 or more and 0.97 or less, 0.93 or more and 0.97 or less, 0.94 or more and 0.97 or less, or 0.95 or more and 0.97 or less.
  • the image clarity ratio may be 0.70 or more and 0.96 or less, 0.75 or more and 0.96 or less, 0.80 or more and 0.96 or less, 0.85 or more and 0.96 or less, 0.88 or more and 0.96 or less, 0.90 or more and 0.96 or less, 0.91 or more and 0.96 or less, 0.92 or more and 0.96 or less, 0.93 or more and 0.96 or less, 0.94 or more and 0.96 or less, or 0.95 or more and 0.96 or less.
  • the antiglare sheet 10 may have a feature (C) in addition to or instead of the feature (B).
  • the value specified by characteristic (C) is "CL2.0-CL0.125".
  • the anti-glare sheet 10 having characteristics (A) and (C) has excellent anti-glare properties and can effectively suppress glare. Furthermore, the anti-glare sheet 10 having characteristics (A) and (C) can effectively suppress the contour of an object observed through the anti-glare sheet 10 from becoming unclear. Furthermore, the anti-glare sheet 10 having characteristics (A) and (C) can effectively suppress the anti-glare sheet 10 from becoming cloudy and the contrast of an object observed through the anti-glare sheet 10 from decreasing.
  • the value obtained by subtracting the image clarity C(0.125) from the image clarity C(2.0) is an index for realizing both improved anti-glare properties and suppression of reduced visibility caused by glare, etc., similar to the image clarity ratio defined in feature (B).
  • the value obtained by subtracting the image clarity C(0.125) from the image clarity C(2.0) may be 11% or less, 10% or less, 8.0% or less, 6.4% or less, 6.0% or less, 5.0% or less, 4.7% or less, or 4.1% or less.
  • the value obtained by subtracting the image clarity C(0.125) from the image clarity C(2.0) may be 0% or more, or may be greater than 0%. From the viewpoint of imparting sufficient anti-glare properties to the anti-glare sheet 10, the value obtained by subtracting the image clarity C(0.125) from the image clarity C(2.0) may be 0.90% or more, 1.0% or more, 1.2% or more, 2.0% or more, or 2.2% or more.
  • the value obtained by subtracting image clarity C (0.125) from image clarity C (2.0) may be 11% or less, or 0.90% or more and 10% or less, or 0.90% or more and 8.0% or less, or 0.90% or more and 6.4% or less, or 0.90% or more and 6.0% or less, or 0.90% or more and 5.0% or less, or 0.90% or more and 4.7% or less, or 0.90% or more and 4.1% or less.
  • the value obtained by subtracting the image clarity C(0.125) from the image clarity C(2.0) may be 1.0% or more and 11% or less, 1.0% or more and 10% or less, 1.0% or more and 8.0% or less, 1.0% or more and 6.4% or less, 1.0% or more and 6.0% or less, 1.0% or more and 5.0% or less, 1.0% or more and 4.7% or less, or 1.0% or more and 4.1% or less.
  • the value obtained by subtracting the image clarity C(0.125) from the image clarity C(2.0) may be 1.2% or more and 11% or less, 1.2% or more and 10% or less, 1.2% or more and 8.0% or less, 1.2% or more and 6.4% or less, 1.2% or more and 6.0% or less, 1.2% or more and 5.0% or less, 1.2% or more and 4.7% or less, or 1.2% or more and 4.1% or less.
  • the value obtained by subtracting the image clarity C(0.125) from the image clarity C(2.0) may be 2.0% or more and 11% or less, 2.0% or more and 10% or less, 2.0% or more and 8.0% or less, 2.0% or more and 6.4% or less, 2.0% or more and 6.0% or less, 2.0% or more and 5.0% or less, 2.0% or more and 4.7% or less, or 2.0% or more and 4.1% or less.
  • the value obtained by subtracting the image clarity C(0.125) from the image clarity C(2.0) may be 2.2% or more and 11% or less, 2.2% or more and 10% or less, 2.2% or more and 8.0% or less, 2.2% or more and 6.4% or less, 2.2% or more and 6.0% or less, 2.2% or more and 5.0% or less, 2.2% or more and 4.7% or less, or 2.2% or more and 4.1% or less.
  • the antiglare sheet 10 may have a feature (D) in addition to or instead of the feature (B).
  • the ratio specified in feature (D) is "(CL2.0-CL0.125)/((CL2.0+CL0.125)/2)".
  • the anti-glare sheet 10 having features (A) and (D) has excellent anti-glare properties and can effectively suppress glare. Furthermore, the anti-glare sheet 10 having features (A) and (D) can effectively suppress the contour of an object observed through the anti-glare sheet 10 from becoming unclear. Furthermore, the anti-glare sheet 10 having features (A) and (D) can effectively suppress the anti-glare sheet 10 from becoming cloudy and the contrast of an object observed through the anti-glare sheet 10 from decreasing.
  • the ratio of the value obtained by subtracting image clarity C(0.125) from image clarity C(2.0) to the average of image clarity C(2.0) and image clarity C(0.125) is an index for achieving both improved anti-glare properties and suppression of reduced visibility due to glare, etc., similar to the image clarity ratio specified in characteristic (B) and the difference specified in characteristic (C).
  • the ratio specified in characteristic (D) can be said to be an index that makes the difference specified in characteristic (C) dimensionless. According to the ratio specified in characteristic (D), the anti-glare properties and visibility of the anti-glare sheet 10 can be evaluated stably and with high precision.
  • the ratio of the value obtained by subtracting image clarity C(0.125) from image clarity C(2.0) to the average of image clarity C(2.0) and image clarity C(0.125) may be 1.00 or less, 0.71 or less, 0.28 or less, 0.20 or less, 0.16 or less, 0.13 or less, 0.10 or less, 0.095 or less, or 0.094 or less.
  • the ratio of the value obtained by subtracting image clarity C(2.0) from image clarity C(0.125) to the average of image clarity C(2.0) and image clarity C(0.125) may be 0 or greater, or may be greater than 0. From the viewpoint of imparting sufficient antiglare properties to the antiglare sheet 10, the ratio of the value obtained by subtracting image clarity C(2.0) from image clarity C(0.125) to the average of image clarity C(2.0) and image clarity C(0.125) may be 0.010 or greater, or may be 0.018 or greater.
  • This ratio may be greater than 0 and less than 1.00, greater than 0 and less than 0.71, greater than 0 and less than 0.28, greater than 0 and less than 0.20, greater than 0 and less than 0.16, greater than 0 and less than 0.13, greater than 0 and less than 0.10, greater than 0 and less than 0.095, or greater than 0 and less than 0.094.
  • This ratio may be greater than 0 and less than 1.00, greater than 0 and less than 0.71, greater than 0 and less than 0.28, greater than 0 and less than 0.20, greater than 0 and less than 0.16, greater than 0 and less than 0.13, greater than 0 and less than 0.10, greater than 0 and less than 0.095, or greater than 0 and less than 0.094.
  • This ratio may be 0.010 or more and 1.00 or less, 0.010 or more and 0.71 or less, 0.010 or more and 0.28 or less, 0.010 or more and 0.20 or less, 0.010 or more and 0.16 or less, 0.010 or more and 0.13 or less, 0.010 or more and 0.10 or less, 0.010 or more and 0.095 or less, or 0.010 or more and 0.094 or less.
  • This ratio may be 0.18 to 1.00, 0.18 to 0.71, 0.018 to 0.28, 0.018 to 0.20, 0.018 to 0.16, 0.018 to 0.13, 0.018 to 0.10, 0.018 to 0.095, or 0.018 to 0.094.
  • the antiglare sheet 10 may have a feature (E) in addition to or instead of the feature (B).
  • Image clarity C (1.0) is the image clarity of the anti-glare sheet 10 when measured by a transmission method using an optical comb with a width of 1.0 mm.
  • Image clarity C (0.5) is the image clarity of the anti-glare sheet 10 when measured by a transmission method using an optical comb with a width of 0.5 mm.
  • Anti-glare sheet 10 having features (A) and (E) has excellent anti-glare properties and can effectively suppress glare.
  • anti-glare sheet 10 having features (A) and (E) can effectively suppress the contour of an object observed through anti-glare sheet 10 from becoming unclear.
  • anti-glare sheet 10 having features (A) and (E) can effectively suppress the anti-glare sheet 10 from becoming cloudy and the contrast of an object observed through anti-glare sheet 10 from decreasing.
  • the standard deviation SD of image clarity C(2.0), image clarity C(1.0), image clarity C(0.5), and image clarity C(0.125) is an index for realizing both improved anti-glare properties and suppression of reduced visibility caused by glare, etc., similar to the image clarity ratio defined in feature (B).
  • This standard deviation SD may be 4.9% or less, 4.0% or less, 3.0% or less, 2.5% or less, 2.2% or less, 2.1% or less, or 2.0% or less.
  • the standard deviation SD of image clarity C(2.0), image clarity C(1.0), image clarity C(0.5), and image clarity C(0.125) may be 0% or more, or may be greater than 0%. From the viewpoint of imparting sufficient antiglare properties to the antiglare sheet 10, this standard deviation SD may be 0.2% or more, 0.5% or more, or 0.8% or more.
  • This standard deviation SD may be 0% or more and 4.9% or less, 0% or more and 4.0% or less, 0% or more and 3.0% or less, 0% or more and 2.5% or less, 0% or more and 2.2% or less, 0% or more and 2.1% or less, or 0% or more and 2.0% or less.
  • This standard deviation SD may be greater than 0% and 4.9% or less, greater than 0% and 4.0% or less, greater than 0% and 3.0% or less, greater than 0% and 2.5% or less, greater than 0% and 2.2% or less, greater than 0% and 2.1% or less, or greater than 0% and 2.0% or less.
  • the standard deviation SD may be 0.2% to 4.9%, 0.2% to 4.0%, 0.2% to 3.0%, 0.2% to 2.5%, 0.2% to 2.2%, 0.2% to 2.1%, or 0.2% to 2.0%.
  • the standard deviation SD may be 0.5% to 4.9%, 0.5% to 4.0%, 0.5% to 3.0%, 0.5% to 2.5%, 0.5% to 2.2%, 0.5% to 2.1%, or 0.5% to 2.0%.
  • This standard deviation SD may be 0.8% or more and 4.9% or less, 0.8% or more and 4.0% or less, 0.8% or more and 3.0% or less, 0.8% or more and 2.5% or less, 0.8% or more and 2.2% or less, 0.8% or more and 2.1% or less, or 0.8% or more and 2.0% or less.
  • the antiglare sheet 10 may have a feature (F) in addition to or instead of the feature (B).
  • the coefficient of variation CV defined by the characteristic (F) is the standard deviation SD of the image clarity C (2.0), the image clarity C (1.0), the image clarity C (0.5), and the image clarity C (0.125). (2.0), and the image clarity C (1.0), the image clarity C (0.5), and the image clarity C (0.125) are divided by the average.
  • the anti-glare sheet 10 having the features (A) and (F) has excellent anti-glare properties and can effectively suppress glare.
  • the anti-glare sheet 10 having the features (A) and (F) can effectively suppress the contour of the object observed through the anti-glare sheet 10 from becoming unclear.
  • the anti-glare sheet 10 having the features (A) and (F) can effectively suppress the anti-glare sheet 10 from becoming cloudy and the contrast of the object observed through the anti-glare sheet 10 from decreasing.
  • the coefficient of variation CV of image clarity C(2.0), image clarity C(1.0), image clarity C(0.5), and image clarity C(0.125) is an index for realizing both improved anti-glare properties and suppression of reduced visibility due to glare, etc., similar to the image clarity ratio defined in feature (B) and the standard deviation SD defined in feature (E).
  • the coefficient of variation CV defined in feature (F) can be said to be an index that makes the standard deviation SD defined in feature (E) dimensionless.
  • the ratio defined in feature (F) also allows for stable evaluation of the anti-glare properties and visibility of the anti-glare sheet 10.
  • This coefficient of variation CV may be 0.70 or less, 0.51 or less, 0.39 or less, 0.13 or less, 0.10 or less, 0.08 or less, 0.07 or less, 0.06 or less, or 0.05 or less.
  • the coefficient of variation CV of image clarity C(2.0), image clarity C(1.0), image clarity C(0.5), and image clarity C(0.125) may be 0 or greater, or may be greater than 0. From the viewpoint of imparting sufficient antiglare properties to the antiglare sheet 10, this coefficient of variation CV may be 0.01 or greater, or may be 0.02 or greater.
  • This coefficient of variation CV may be 0 or more and 0.70 or less, 0 or more and 0.51 or less, 0 or more and 0.39 or less, 0 or more and 0.13 or less, 0 or more and 0.10 or less, 0 or more and 0.08 or less, 0 or more and 0.07 or less, 0 or more and 0.06 or less, or 0 or more and 0.05 or less.
  • This coefficient of variation CV may be greater than 0 and 0.70 or less, greater than 0 and 0.51 or less, greater than 0 and 0.39 or less, greater than 0 and 0.13 or less, greater than 0 and 0.10 or less, greater than 0 and 0.08 or less, greater than 0 and 0.07 or less, greater than 0 and 0.06 or less, or greater than 0 and 0.05 or less.
  • This coefficient of variation CV may be 0.01 or more and 0.70 or less, 0.01 or more and 0.51 or less, 0.01 or more and 0.39 or less, 0.01 or more and 0.13 or less, 0.01 or more and 0.10 or less, 0.01 or more and 0.08 or less, 0.01 or more and 0.07 or less, 0.01 or more and 0.06 or less, or 0.01 or more and 0.05 or less.
  • This coefficient of variation CV may be 0.02 or more and 0.70 or less, 0.02 or more and 0.51 or less, 0.02 or more and 0.39 or less, 0.02 or more and 0.13 or less, 0.02 or more and 0.10 or less, 0.02 or more and 0.08 or less, 0.02 or more and 0.07 or less, 0.02 or more and 0.06 or less, or 0.02 or more and 0.05 or less.
  • the antiglare sheet 10 may have the following feature (G).
  • Feature (G) The sum of image clarity C (2.0), image clarity C (1.0), image clarity C (0.5), and image clarity C (0.125) is greater than or equal to 50% and less than or equal to 235%.
  • the total value of image clarity by the transmission method defined in feature (G) is an index for evaluating the clarity of the image formed by transmitted light.
  • a lower limit may be set for the total value of image clarity defined in feature (G).
  • the contour of the object observed through the anti-glare sheet 10 can be made clear.
  • the anti-glare sheet 10 is prevented from becoming cloudy, and the contrast of the object observed through the anti-glare sheet 10 can be improved.
  • the total value of image clarity defined in feature (G) may be 50% or more, 72% or more, 81% or more, 135% or more, 146% or more, 150% or more, 153% or more, 155% or more, 159% or more, 160% or more, or 165% or more.
  • An upper limit may be set on the total value of image clarity by the transmission method defined in feature (G). By setting an upper limit on the total value of image clarity by the transmission method defined in feature (G), anti-glare properties can be ensured.
  • the total value of image clarity by the transmission method defined in feature (G) may be 235% or less, 219% or less, 210% or less, 200% or less, or 192% or less.
  • This total image clarity value may be 50% or more and 235% or less, 72% or more and 235% or less, 81% or more and 235% or less, 135% or more and 235% or less, 146% or more and 235% or less, 150% or more and 235% or less, 153% or more and 235% or less, 155% or more and 235% or less, 159% or more and 235% or less, 160% or more and 235% or less, or 165% or more and 235% or less.
  • This total value of image clarity may be 50% or more and 219% or less, 72% or more and 219% or less, 81% or more and 219% or less, 135% or more and 219% or less, 146% or more and 219% or less, 150% or more and 219% or less, 153% or more and 219% or less, 155% or more and 219% or less, 159% or more and 219% or less, 160% or more and 219% or less, or 165% or more and 219% or less.
  • This total image clarity may be 50% or more and 210% or less, 72% or more and 210% or less, 81% or more and 210% or less, 135% or more and 210% or less, 146% or more and 210% or less, 150% or more and 210% or less, 153% or more and 210% or less, 155% or more and 210% or less, 159% or more and 210% or less, 160% or more and 210% or less, or 165% or more and 210% or less.
  • This total value of image clarity may be 50% or more and 200% or less, 72% or more and 200% or less, 81% or more and 200% or less, 135% or more and 200% or less, 146% or more and 200% or less, 150% or more and 200% or less, 153% or more and 200% or less, 155% or more and 200% or less, 159% or more and 200% or less, 160% or more and 200% or less, or 165% or more and 200% or less.
  • This total image clarity value may be 50% or more and 192% or less, 72% or more and 192% or less, 81% or more and 192% or less, 135% or more and 192% or less, 146% or more and 192% or less, 150% or more and 192% or less, 153% or more and 192% or less, 155% or more and 192% or less, 159% or more and 192% or less, 160% or more and 192% or less, or 165% or more and 192% or less.
  • a lower limit may be set for the image clarity C (2.0).
  • a lower limit for the image clarity C (2.0) By setting a lower limit for the image clarity C (2.0), glare can be suppressed.
  • the contour of the object observed through the anti-glare sheet 10 By setting the lower limit, the contour of the object observed through the anti-glare sheet 10 can be made clear.
  • the anti-glare sheet 10 does not become cloudy. By suppressing the above, it is possible to improve the contrast of an object observed through the antiglare sheet 10.
  • the image clarity C(2.0) may be 30% or more, 35% or more, or 40% or more. , 41% or more, 42% or more, or 44% or more.
  • An upper limit may be set for image clarity C(2.0). By setting an upper limit for image clarity C(2.0), anti-glare properties can be ensured.
  • Image clarity C(2.0) may be 65% or less, 60% or less, 57% or less, 55% or less, or 51% or less.
  • Image clarity C(2.0) may be 30% or more and 65% or less, 35% or more and 65% or less, 40% or more and 65% or less, 41% or more and 65% or less, 42% or more and 65% or less, or 44% or more and 65% or less.
  • Image clarity C(2.0) may be 30% or more and 60% or less, 35% or more and 60% or less, 40% or more and 60% or less, 41% or more and 60% or less, 42% or more and 60% or less, or 44% or more and 60% or less.
  • Image clarity C(2.0) may be 30% or more and 57% or less, 35% or more and 57% or less, 40% or more and 57% or less, 41% or more and 57% or less, 42% or more and 57% or less, or 44% or more and 57% or less.
  • Image clarity C (2.0) may be 30% or more and 55% or less, 35% or more and 55% or less, 40% or more and 55% or less, 41% or more and 55% or less, 42% or more and 55% or less, or 44% or more and 55% or less.
  • the image clarity C (2.0) By setting the image clarity C (2.0) within the above-mentioned numerical range, it is possible to improve anti-glare properties, suppress glare, and suppress clouding.
  • the image clarity C (2.0) is within the above-mentioned numerical range, the anti-glare sheet has excellent anti-glare properties, and as a result, the image clarity of the anti-glare sheet usually varies depending on the width of the optical comb.
  • the image clarity C (2.0) of the anti-glare sheet 10 that satisfies features (A) and (B) within the above-mentioned numerical range, excellent anti-glare properties are ensured by dense and uniform light diffusion.
  • the anti-glare sheet 10 that has features (A) and (B) and has the image clarity C (2.0) adjusted to the above-mentioned numerical range, the anti-glare properties can be significantly improved and the decrease in visibility caused by glare, etc. can be significantly suppressed.
  • Image clarity C (1.0)> A lower limit may be set for the image clarity C (1.0). By setting a lower limit for the image clarity C (1.0), the contour of the object observed through the antiglare sheet 10 can be made clear. By setting a lower limit for the image clarity C (1.0), it is possible to suppress the anti-glare sheet 10 from becoming cloudy, and to improve the contrast of an object observed through the anti-glare sheet 10.
  • the image clarity C(1.0) may be 30% or more, 35% or more, 36% or more, 37% or more, 39% or more, or 40% or more.
  • An upper limit may be set for image clarity C(1.0). By setting an upper limit for image clarity C(1.0), anti-glare properties can be ensured.
  • Image clarity C(1.0) may be 65% or less, 60% or less, 54% or less, or 47% or less.
  • Image clarity C(1.0) may be 30% or more and 65% or less, 35% or more and 65% or less, 36% or more and 65% or less, 37% or more and 65% or less, 39% or more and 65% or less, or 40% or more and 65% or less.
  • Image clarity C(1.0) may be 30% or more and 60% or less, 35% or more and 60% or less, 36% or more and 60% or less, 37% or more and 60% or less, 39% or more and 60% or less, or 40% or more and 60% or less.
  • Image clarity C(1.0) may be 30% or more and 54% or less, 35% or more and 54% or less, 36% or more and 54% or less, 37% or more and 54% or less, 39% or more and 54% or less, or 40% or more and 54% or less.
  • Image clarity C(1.0) may be 30% or more and 47% or less, 35% or more and 47% or less, 36% or more and 47% or less, 37% or more and 47% or less, 39% or more and 47% or less, or 40% or more and 47% or less.
  • Image clarity C (0.5)> A lower limit may be set for the image clarity C (0.5). By setting a lower limit for the image clarity C (0.5), the contour of the object observed through the antiglare sheet 10 can be made clear. By setting a lower limit for the image clarity C (0.5), it is possible to suppress the anti-glare sheet 10 from becoming cloudy, and to improve the contrast of an object observed through the anti-glare sheet 10.
  • the image clarity C(0.5) may be 30% or more, 32% or more, 35% or more, 37% or more, 38% or more, or 40% or more.
  • An upper limit may be set for image clarity C(0.5). By setting an upper limit for image clarity C(0.5), anti-glare properties can be ensured.
  • Image clarity C(0.5) may be 65% or less, 60% or less, 54% or less, or 47% or less.
  • Image clarity C(0.5) may be 30% or more and 65% or less, 32% or more and 65% or less, 35% or more and 65% or less, 37% or more and 65% or less, 38% or more and 65% or less, or 40% or more and 65% or less.
  • Image clarity C(0.5) may be 30% or more and 60% or less, 32% or more and 60% or less, 35% or more and 60% or less, 37% or more and 60% or less, 38% or more and 60% or less, or 40% or more and 60% or less.
  • Image clarity C(0.5) may be 30% or more and 54% or less, 32% or more and 54% or less, 35% or more and 54% or less, 37% or more and 54% or less, 38% or more and 54% or less, or 40% or more and 54% or less.
  • Image clarity C(0.5) may be 30% or more and 47% or less, 32% or more and 47% or less, 35% or more and 47% or less, 37% or more and 47% or less, 38% or more and 47% or less, or 40% or more and 47% or less.
  • a lower limit may be set for the image clarity C (0.125).
  • a lower limit for the image clarity C (0.1125) By setting a lower limit for the image clarity C (0.1125), glare can be suppressed.
  • the contour of the object observed through the anti-glare sheet 10 By setting the lower limit, the contour of the object observed through the anti-glare sheet 10 can be made clear.
  • the anti-glare sheet 10 does not become cloudy. By suppressing the above, the contrast of the object observed through the antiglare sheet 10 can be improved.
  • the image clarity C (0.125) may be 5% or more, 11% or more, or 16% or more. , 30% or more, 34% or more, 35% or more, 38% or more, 40% or more, or 41% or more.
  • An upper limit may be set for image clarity C(0.125). By setting an upper limit for image clarity C(0.125), anti-glare properties can be ensured.
  • Image clarity C(0.125) may be 65% or less, 60% or less, 55% or less, 50% or less, 48% or less, or 47% or less.
  • Image clarity C(0.125) may be 5% or more, 11% to 65% or less, 16% to 65% or less, 30% to 65% or less, 34% to 65% or less, 35% to 65% or less, 38% to 65% or less, 40% to 65% or less, or 41% to 65%.
  • Image clarity C(0.125) may be 5% or more, 11% to 60% or less, 16% to 60% or less, 30% to 60% or less, 34% to 60% or less, 35% to 60% or less, 38% to 60% or less, 40% to 60% or less, or 41% to 60%.
  • the image clarity C(0.125) may be 5% or more, 11% to 55% or less, 16% to 55% or less, 30% to 55% or less, 34% to 55% or less, 35% to 55% or less, 38% to 55% or less, 40% to 55% or less, or 41% to 55% or less.
  • the image clarity C(0.125) may be 5% or more, 11% to 50% or less, 16% to 50% or less, 30% to 50% or less, 34% to 50% or less, 35% to 50% or less, 38% to 50% or less, 40% to 50% or less, or 41% to 50%.
  • the image clarity C(0.125) may be 5% or more, 11% to 48% or less, 16% to 48% or less, 30% to 48% or less, 34% to 48% or less, 35% to 48% or less, 38% to 48% or less, 40% to 48% or less, or 41% to 48% or less.
  • the image clarity C(0.125) may be 5% or more, 11% to 47% or less, 16% to 47% or less, 30% to 47% or less, 34% to 47% or less, 35% to 47% or less, 38% to 47% or less, 40% to 47% or less, or 41% to 47% or less.
  • the anti-glare sheet has excellent anti-glare properties, and as a result, the image clarity of the anti-glare sheet usually varies depending on the width of the optical comb.
  • the image clarity C (0.125) of the anti-glare sheet 10 that satisfies features (A) and (B) within the above-mentioned numerical range, excellent anti-glare properties are ensured by dense and uniform light diffusion.
  • the anti-glare sheet 10 that has features (A) and (B) and has the image clarity C (0.125) adjusted to the above-mentioned numerical range, it is possible to significantly improve anti-glare properties and significantly suppress the decrease in visibility caused by glare, etc.
  • the degree of glare can be quantitatively evaluated by calculating the glare degree.
  • the glare degree is the standard deviation of the gradation indicating the brightness of the pixel in the image data obtained by capturing the first surface 11 of the anti-glare sheet 10.
  • the anti-glare sheet 10 is attached to the image forming surface 75a of the display element 75. If the glare degree is small, the glare becomes less noticeable.
  • the glare degree may be 16 or less, 15 or less, 14 or less, 13 or less, or 12 or less. By setting an upper limit for the glare degree, the glare can be suppressed to a certain standard or less.
  • the lower limit for the glare degree is not particularly set.
  • the glare degree may be 0 or more, or may be greater than 0.
  • the glare degree is a value measured by a measurement method described in ⁇ 2-6. Glare Degree>> of the examples described later.
  • the glare level may be greater than 0 and less than 16, greater than 0 and less than 15, greater than 0 and less than 14, greater than 0 and less than 13, or greater than 0 and less than 12.
  • the glare level may be greater than 0 and less than 16, greater than 0 and less than 15, greater than 0 and less than 14, greater than 0 and less than 13, or greater than 0 and less than 12.
  • An upper limit may be set for the specular glossiness on the first surface 11. Setting an upper limit for the specular glossiness on the first surface 11 can effectively prevent an image of the background in which the anti-glare sheet 10 is installed, such as a lighting device, from being reflected on the anti-glare sheet 10.
  • the specular glossiness Gs(20) when the angle of incidence on the first surface 11 is 20° may be 8.0 or less, 5.0 or less, 4.0 or less, or 3.7 or less.
  • a lower limit may be set for the specular gloss at the first surface 11.
  • the contour of the object observed through the anti-glare sheet 10 can be made clear.
  • the anti-glare sheet 10 is prevented from becoming cloudy, and the contrast of the object observed through the anti-glare sheet 10 can be improved.
  • the specular gloss Gs(20) at an incident angle of 20° on the first surface 11 may be 0.10 or more, 0.50 or more, 1.0 or more, 1.8 or more, 2.3 or more, or 2.5 or more.
  • the specular gloss Gs (20) may be 0.10 or more and 8.0 or less, 0.10 or more and 5.0 or less, 0.10 or more and 4.0 or less, or 0.10 or more and 3.7 or less.
  • the specular gloss Gs (20) may be 0.50 or more and 8.0 or less, 0.50 or more and 5.0 or less, 0.50 or more and 4.0 or less, or 0.50 or more and 3.7 or less.
  • the specular gloss Gs (20) may be 1.0 or more and 8.0 or less, 1.0 or more and 5.0 or less, 1.0 or more and 4.0 or less, or 1.0 or more and 3.7 or less.
  • the specular gloss Gs (20) may be 1.8 or more and 8.0 or less, 1.8 or more and 5.0 or less, 1.8 or more and 4.0 or less, or 1.8 or more and 3.7 or less.
  • the specular gloss Gs(20) may be 2.3 or more and 8.0 or less, 2.3 or more and 5.0 or less, 2.3 or more and 4.0 or less, or 2.3 or more and 3.7 or less.
  • the specular gloss Gs(20) may be 2.5 or more and 8.0 or less, 2.5 or more and 5.0 or less, 2.5 or more and 4.0 or less, or 2.5 or more and 3.7 or less.
  • Specular gloss is a value measured in accordance with JIS Z8741:1997, except that the angle of incidence is set to 20°.
  • the angle of incidence is the angle (°) between the normal direction to the object of incidence and the direction of incidence.
  • the angle of incidence is between 0° and 90°.
  • the measurement environment for measuring specular gloss is a temperature of 23°C ⁇ 2°C and a relative humidity of 50% ⁇ 5%.
  • the measurement sample to be measured is placed in the measurement environment for 16 hours before starting measurement. Before measuring specular gloss, the light source of the measuring device is turned on for 15 minutes to stabilize the light source output.
  • the incident surface when measuring the specular gloss is the first surface 11 of the anti-glare sheet 10.
  • a black plate is attached to the second surface 12 of the measurement sample to be measured via an optically transparent adhesive sheet.
  • the total light transmittance of the optically transparent adhesive sheet is 91.5% or more.
  • the total light transmittance of the black plate is less than 1%.
  • An example of an optically transparent adhesive sheet is "Panaclean PD-S1" manufactured by Panac Corporation.
  • An example of a black plate is "Comoglass 502K (black)” manufactured by Kuraray Co., Ltd.
  • the specular gloss is the arithmetic mean of five measured values.
  • the five measured values are taken at five measurement positions on the measurement sample to be evaluated.
  • the five measurement positions are located at least 10 mm apart from each other.
  • the upper limit of the internal haze of the antiglare sheet 10 having the above-mentioned characteristic (A) may be adjusted.
  • the internal haze is an index of the transmission haze caused by diffusion other than that caused by the uneven surface 11X formed on the outermost surface of the antiglare sheet 10.
  • the measurement sample for measuring internal haze is prepared by attaching a triacetyl cellulose film to the first surface 11, which forms the uneven surface 11X of the anti-glare sheet 10, using a transparent adhesive.
  • the transparent adhesive is "Panaclean PD-S1" manufactured by Panac Corporation.
  • the thickness of the transparent adhesive is 25 ⁇ m.
  • the triacetyl cellulose film is "TD80UL” manufactured by Fuji Film Corporation.
  • the thickness of the triacetyl cellulose film is 80 ⁇ m.
  • the environment in which the measurement samples are prepared is a temperature of 23°C ⁇ 2°C and a relative humidity of 50% ⁇ 5%.
  • the anti-glare sheet, transparent adhesive, and triacetyl cellulose film used in preparing the measurement samples are placed in the preparation environment for 16 hours before preparation begins.
  • the transmission haze of the measurement sample measured according to the above-mentioned method for measuring transmission haze is the internal haze (%) of the anti-glare sheet 10.
  • the incident surface when measuring the internal haze of the anti-glare sheet 10 is the second surface 12 of the anti-glare sheet 10.
  • the internal haze shall be the arithmetic average of five measured values.
  • the five measured values shall be measured at five measurement positions on the anti-glare sheet being evaluated.
  • the five measurement positions shall be located at least 10 mm apart from each other.
  • An upper limit may be set for the internal haze of the anti-glare sheet 10.
  • an upper limit for the internal haze of the anti-glare sheet 10 By setting an upper limit for the internal haze of the anti-glare sheet 10, a decrease in contrast can be suppressed.
  • the internal haze of the anti-glare sheet 10 may be 5.0% or less, 3.5% or less, 3.0% or less, 2.0% or less, 1.8% or less, 1.7% or less, 1.6% or less, or 1.5% or less.
  • No lower limit is particularly set for the internal haze of the anti-glare sheet 10.
  • the internal haze of the anti-glare sheet 10 may be 0% or more, or may be greater than 0%.
  • the internal haze may be 0% or more and 5.0% or less, 0% or more and 3.5% or less, 0% or more and 3.0% or less, 0% or more and 2.0% or less, 0% or more and 1.8% or less, 0% or more and 1.7% or less, 0% or more and 1.6% or less, or 0% or more and 1.5% or less.
  • the internal haze may be greater than 0% and 5.0% or less, greater than 0% and 3.5% or less, greater than 0% and 3.0% or less, greater than 0% and 2.0% or less, greater than 0% and 1.8% or less, greater than 0% and 1.7% or less, greater than 0% and 1.6% or less, or greater than 0% and 1.5% or less.
  • An upper limit may be set for the ratio of the internal haze of the anti-glare sheet 10 to the transmitted haze of the anti-glare sheet 10 ("internal haze"/"transmitted haze").
  • the ratio of the internal haze of the anti-glare sheet 10 to the transmitted haze of the anti-glare sheet 10 may be 0.20 or less, 0.10 or less, 0.094 or less, 0.090 or less, 0.080 or less, 0.070 or less, or 0.068 or less.
  • the ratio of the internal haze of the anti-glare sheet 10 to the transmitted haze of the anti-glare sheet 10 may be equal to or greater than 0.
  • This ratio may be greater than 0 and less than 0.20, greater than 0 and less than 0.10, greater than 0 and less than 0.094, greater than 0 and less than 0.090, greater than 0 and less than 0.080, greater than 0 and less than 0.070, or greater than 0 and less than 0.068.
  • This ratio may be greater than 0 and less than 0.20, greater than 0 and less than 0.10, greater than 0 and less than 0.094, greater than 0 and less than 0.090, greater than 0 and less than 0.080, greater than 0 and less than 0.070, or greater than 0 and less than 0.068.
  • the lower and upper limits of the external haze of the antiglare sheet 10 may be adjusted.
  • the external haze is an index of the transmitted haze caused by diffusion due to the uneven surface 11X formed on the outermost surface of the antiglare sheet 10.
  • the external haze is calculated by subtracting the internal haze from the transmitted haze. In other words, the external haze is the difference between the transmitted haze and the internal haze.
  • the units of the external haze are the same as those of the transmitted haze and the internal haze.
  • the units of the external haze are the same as those of the internal haze.
  • the units of the external haze are "%".
  • An upper limit may be set for the external haze.
  • the external haze of the anti-glare sheet 10 may be 35% or less, 32% or less, 29% or less, 28% or less, 27% or less, or 25% or less.
  • a lower limit may be set for the external haze.
  • the anti-glare properties can be efficiently improved.
  • the anti-glare properties can be efficiently improved while suppressing clouding.
  • the external haze of the anti-glare sheet 10 may be greater than 14%, 14.5% or more, 15% or more, 20% or more, 21% or more, or 22% or more.
  • the external haze may be greater than 14% and less than 35%, greater than 14% and less than 32%, greater than 14% and less than 29%, greater than 14% and less than 28%, greater than 14% and less than 27%, or greater than 14% and less than 25%.
  • the external haze may be 14.5% or more and less than 35%, greater than 14.5% and less than 32%, greater than 14.5% and less than 29%, greater than 14.5% and less than 28%, greater than 14.5% and less than 27%, or greater than 14.5% and less than 25%.
  • the external haze may be 15% or more and less than 35%, greater than 15% and less than 32%, greater than 15% and less than 29%, greater than 15% and less than 28%, greater than 15% and less than 27%, or greater than 15% and less than 25%.
  • the external haze may be 20% to 35%, 20% to 32%, 20% to 29%, 20% to 28%, 20% to 27%, or 20% to 25%.
  • the external haze may be 21% to 35%, 21% to 32%, 21% to 29%, 21% to 28%, 21% to 27%, or 21% to 25%.
  • the external haze may be 22% to 35%, 22% to 32%, 22% to 29%, 22% to 28%, 22% to 27%, or 22% to 25%.
  • An anti-glare sheet having characteristics (A) and (B) and further having upper and lower limits set for the external haze can make the diffusion caused by the external haze dense and uniform. As a result, the anti-glare properties can be significantly improved while significantly suppressing glare. In addition, it is possible to reduce the internal haze and suppress internal diffusion, so that the clouding of the anti-glare sheet can be effectively suppressed. As described above, an anti-glare sheet having characteristics (A) and (B) and further having upper and lower limits set for the external haze can achieve both a significant improvement in anti-glare properties and a significant suppression of reduced visibility caused by glare, etc., and can also effectively suppress the clouding of the anti-glare sheet.
  • the anti-glare sheet 10 having characteristics (A) and (Bx) and an external haze of greater than 14% and not greater than 35% was able to simultaneously improve anti-glare properties and suppress reduced visibility due to glare, etc., to the same extent as an anti-glare sheet having characteristics (A) and (B).
  • the anti-glare sheet 10 can be endowed with a denser and more uniform light diffusion function than conventional anti-glare sheets.
  • Feature (B) can be endowed with a denser and more uniform light diffusion function than feature (Bx).
  • an anti-glare sheet 10 having characteristic (A) and an external haze greater than 14% and not greater than 35% can simultaneously improve anti-glare properties and suppress reduced visibility due to glare, etc., to the same extent as an anti-glare sheet having characteristics (A) and (B), by having characteristic (Bx).
  • the present disclosure is not bound by this presumption.
  • the total light transmittance of the antiglare sheet 10 may be 50% or more, 70% or more, 80% or more, or 90% or more.
  • the total light transmittance of the antiglare sheet 10 does not have an upper limit.
  • the total light transmittance of the antiglare sheet 10 may be equal to or less than 100%, or may be less than 100%.
  • the total light transmittance may be 50% or more and 100% or less, 70% or more and 100% or less, 80% or more and 100% or less, or 90% or more and 100% or less.
  • the total light transmittance may be 50% or more and less than 100%, 70% or more and less than 100%, 80% or more and less than 100%, or 90% or more and less than 100%.
  • a D65 light source is used to measure the total light transmittance. Before measuring the total light transmittance, the device's light source is turned on for 15 minutes to stabilize the output of the D65 light source. The angle of incidence on the measurement sample when measuring the total light transmittance is 0°.
  • the incident surface when measuring the total light transmittance of the anti-glare sheet 10 is the second surface 12 of the anti-glare sheet 10.
  • the test environment when measuring the total light transmittance is a temperature of 23°C ⁇ 2°C and a relative humidity of 50% ⁇ 5%. The measurement sample is placed in the test environment for 16 hours before starting the test. Other measurement conditions when measuring the total light transmittance are in accordance with JIS K7361-1:1997.
  • the total light transmittance is the arithmetic mean of five measured values.
  • the five measured values are measured at five measurement positions on the anti-glare sheet 10 to be evaluated.
  • the five measurement positions are located at least 10 mm apart from each other.
  • transparent means that the total light transmittance is 50% or more.
  • the total light transmittance of a transparent object may be 70% or more, 80% or more, or 90% or more.
  • the antiglare sheet 10 shown in Fig. 1 includes a substrate 20 and an antiglare layer 30, in this order from the second surface 12 to the first surface 11 in the first direction D1.
  • the anti-glare sheet 10 may further include other layers.
  • the anti-glare sheet 10 includes a substrate 20, an anti-glare layer 30, and a functional layer 40, in this order.
  • the functional layer 40 may include a binder resin and particles.
  • the particles may be low-refractive index particles.
  • the refractive index of the particles may be lower than the refractive index of the binder resin.
  • the functional layer 40 may be configured as a layer with a refractive index lower than that of the anti-glare layer 30.
  • the functional layer 40 may be a low-reflection layer or a reflection-suppressing layer that has a function of suppressing reflection.
  • the antiglare sheet 10 may further include two or more layers.
  • the antiglare sheet 10 includes a substrate 20, an antiglare layer 30, a second functional layer 50, and a functional layer 40 in this order.
  • the second functional layer 50 may include a binder resin and particles.
  • the particles may be high refractive index particles.
  • the refractive index of the particles may be higher than the refractive index of the binder resin.
  • the functional layer 40 may be configured as a layer with a lower refractive index than the second functional layer 50.
  • the second functional layer 50 may be configured as a layer with a higher refractive index than the antiglare layer 30.
  • the functional layer 40 and the second functional layer 50 may be low-reflection layers or anti-reflection layers having a function of suppressing reflection.
  • the anti-glare sheet 10 may include other functional layers, different from the illustrated example.
  • Examples of other functional layers include an anti-fouling layer, a hard coat layer, and an antistatic layer.
  • the first direction D1 is the stacking direction.
  • Each layer 20, 30, 40, 50 included in the anti-glare sheet 10 is stacked in the first direction D1.
  • Each layer 20, 30, 40, 50 has a normal direction parallel to the first direction D1.
  • Each layer 20, 30, 40, 50 extends in a second direction D2 and a third direction D3 that are perpendicular to the first direction D1.
  • the second direction D2 and the third direction D3 are perpendicular to each other.
  • the first surface 11 is formed by the anti-glare layer 30.
  • the first surface 11 is formed by the functional layer 40.
  • the functional layer 40 and the second functional layer 50 are thin layers that extend along the uneven surface 31X of the anti-glare layer 30.
  • the first surface 11 is an uneven surface 11X having unevenness corresponding to the uneven surface 31X of the anti-glare layer 30.
  • the substrate 20, antiglare layer 30, functional layer 40, and second functional layer 50 are described below.
  • the substrate 20 supports the antiglare layer 30. As shown in Figures 1 to 3, the substrate 20 may constitute the second surface 12 of the antiglare sheet 10.
  • the second surface 12 may be a flat surface.
  • the second surface 12 may be a surface perpendicular to the first direction D1.
  • the substrate 20 may be transparent. Transparent means that the total light transmittance is 50% or more, and may be 70% or more, 80% or more, or 90% or more.
  • the material of the substrate 20 is not particularly limited, and may be resin or glass. Resin is preferable because it is lightweight and easy to manufacture.
  • the resin used in the substrate 20 may be an olefin resin such as polyethylene or polypropylene.
  • the resin used in the substrate 20 may be a vinyl resin such as polyvinyl chloride, polyvinylidene chloride, polyvinyl alcohol, ethylene-vinyl acetate copolymer, or ethylene-vinyl alcohol copolymer.
  • the resin used in the substrate 20 may be an ester resin such as polyethylene terephthalate, polyethylene naphthalate, or polybutylene terephthalate.
  • the resin used in the substrate 20 may be an acrylic resin such as polymethyl (meth)acrylate or polyethyl (meth)acrylate.
  • the resin used in the substrate 20 may be a styrene resin such as polystyrene, a polyamide resin such as nylon 6 or nylon 66, or a cellulose resin such as triacetyl cellulose.
  • the resin used in the substrate 20 include resins such as polycarbonate, polyimide resins, and cycloolefin resins obtained from cycloolefins such as norbornene and dicyclopentadiene.
  • the antiglare layer 30 may contain only one of the above-mentioned resins, or may contain two or more of the above-mentioned resins.
  • the substrate containing a polyester-based resin such as polyethylene terephthalate or polyethylene naphthalate may be stretched.
  • the stretching may be uniaxial stretching.
  • the stretching may be biaxial stretching.
  • the stretched substrate containing a polyester-based resin has birefringence.
  • the retardation Re of the stretched substrate containing a polyester-based resin may be adjusted.
  • the retardation Re is expressed by the following formula using the refractive index (nx) in the direction (slow axis direction) with the largest refractive index in the plane of the substrate, the refractive index (ny) in the direction (fast axis direction) perpendicular to the slow axis direction, and the thickness (d) of the substrate.
  • the stretched substrate containing polyester-based resin may have a high retardation Re.
  • a stretched substrate with a high retardation Re can make rainbow unevenness less noticeable.
  • Rainbow unevenness is a striped pattern observed in the colors of the rainbow.
  • the retardation Re of the stretched substrate containing polyester-based resin may be 3000 nm or more, 5000 nm or more, or 7000 nm or more.
  • the retardation Re of the stretched substrate in this example may be 30000 nm or less.
  • the stretched substrate containing a polyester-based resin may have a low retardation Re.
  • a stretched substrate with a low retardation Re can also make rainbow unevenness less noticeable.
  • the retardation Re of the stretched substrate containing a polyester-based resin may be 1100 nm or more, 1000 nm or less, or 900 nm or less.
  • the retardation Re of the stretched substrate in this example may be 0 nm or more, or may be greater than 0 nm.
  • the thickness of the resin substrate 20 is not particularly limited. From the viewpoint of ease of handling, the thickness of the resin substrate 20 may be 10 ⁇ m or more, 20 ⁇ m or more, or 50 ⁇ m or more. The thickness of the resin substrate 20 may be 500 ⁇ m or less, 400 ⁇ m or less, or 300 ⁇ m or less. The thickness of the glass substrate 20 may be 500 ⁇ m or more. The thickness of the glass substrate 20 may be 5 mm or less.
  • the substrate 20 When applying the anti-glare sheet 10 to foldable applications, the substrate 20 may be flexible. In this example, the thickness of the resin substrate 20 may be 10 ⁇ m or more and 40 ⁇ m or less. When the anti-glare sheet 10 is used in a laminated state with glass, the thickness of the resin substrate 20 may be 40 ⁇ m or more and 100 ⁇ m or less from the viewpoint of preventing the glass from shattering.
  • the substrate 20 may include only a single layer, or may include multiple layers.
  • the substrate 20 may include a primer layer such as an easy-adhesion layer.
  • the antiglare layer 30 is a layer that suppresses reflected and scattered light and plays a central role in antiglare properties.
  • the antiglare layer 30 includes a first surface 31 and a second surface 32.
  • the first surface 31 faces a first side in a first direction D1.
  • the second surface 32 faces a second side in the first direction D1.
  • the first surface 31 may be an uneven surface 31X having unevenness.
  • the second surface 32 may be a flat surface.
  • the antiglare layer 30 may be connected to the substrate 20 at the second surface 32.
  • the antiglare layer 30 may be bonded to the substrate 20 at the second surface 32.
  • the first surface 31 of the anti-glare layer 30 constitutes the first surface 11 of the anti-glare sheet 10.
  • the first surface 11 is an uneven surface 11X constituted by an uneven surface 31X.
  • the ambient light of the environment in which the anti-glare sheet 10 is installed is diffusely reflected. Due to this diffuse reflection, the background image in the environment in which the anti-glare sheet 10 is installed is prevented from being reflected on the anti-glare sheet 10. In this way, the anti-glare layer 30 and the anti-glare sheet 10 exhibit anti-glare properties.
  • the functional layer 40 constitutes the first surface 11 of the anti-glare sheet 10.
  • the functional layer 40 is a very thin layer that spreads along the uneven surface 31X.
  • the first surface 11 is an uneven surface 11X that includes unevenness corresponding to the unevenness of the uneven surface 31X.
  • the ambient light of the environment in which the anti-glare sheet 10 is installed is diffusely reflected. Due to this diffuse reflection, the background image in the environment in which the anti-glare sheet 10 is installed is suppressed from being reflected on the anti-glare sheet 10. In this way, the anti-glare layer 30 and the anti-glare sheet 10 exhibit anti-glare properties.
  • the antiglare layer 30 can be produced, for example, by (X) shaping with an embossing roll, (Y) etching treatment, (Z) molding with a mold, (W) forming a coating film by coating, etc. According to the production method (Z), the uneven surface 31X of the desired shape can be stably produced.
  • an antiglare layer coating liquid for forming the antiglare layer 30 is used. The coating film of the antiglare layer coating liquid is dried and cured to obtain the antiglare layer 30.
  • the production method (W) is excellent in productivity and compatibility with a wide variety of products. The following two methods may be adopted as the production method of (W).
  • first method (W1) a coating liquid containing a binder resin and particles is applied to form unevenness due to the presence of the particles.
  • second method (W2) a coating liquid containing an arbitrary resin and a resin that is poorly compatible with the resin is applied to phase separate the resin to form unevenness.
  • the average thickness T of the anti-glare layer 30 can be determined taking into consideration the balance between curl suppression, mechanical strength, hardness, and toughness.
  • the average thickness T of the anti-glare layer may be 2 ⁇ m or more and 10 ⁇ m or less, or 4 ⁇ m or more and 8 ⁇ m or less.
  • the "average thickness” used for each layer included in the antiglare sheet is a value specified by the following (A1) to (A3).
  • (A1) The cross section of the antiglare sheet is imaged with a scanning transmission electron microscope (STEM) to obtain an observation image. The imaging area is determined so that the thickness direction of the layer to be measured is along the short side of the rectangular imaging area.
  • the magnification during imaging is an appropriate magnification such that the thickness of the layer to be measured relative to the length of the short side of the imaging area is 1/3 or more and 2/3 or less.
  • the thickness of the measurement target layer is measured at a central position along the sheet surface of the anti-glare sheet, and at positions shifted 50 ⁇ m on both sides from the central position along the sheet surface of the anti-glare sheet.
  • the thickness is defined as the length ( ⁇ m) of the measurement target layer along a direction perpendicular to the sheet surface of the anti-glare sheet.
  • A3 For the layer to be measured, the above steps (A1) and (A2) are repeated five times to measure the thickness of the layer to be measured at a total of 15 positions. The average of the total 15 thickness measurements is regarded as the average thickness ( ⁇ m) of the layer to be measured.
  • the antiglare layer mainly contains a resin component, and may contain additives as necessary, such as organic particles, inorganic fine particles, refractive index adjusters, antistatic agents, antifouling agents, ultraviolet absorbers, light stabilizers, antioxidants, viscosity adjusters, and thermal polymerization initiators.
  • the anti-glare layer 30 may include a binder resin 36 and particles 37.
  • the particles 37 may be organic particles.
  • the particles 37 may be inorganic particles.
  • the anti-glare layer 30 may include both organic particles and inorganic particles as the particles 37.
  • Examples of the material of the organic particles include polymethyl methacrylate, polyacrylic-styrene copolymer, melamine resin, polycarbonate, polystyrene, polyvinyl chloride, benzoguanamine-melamine-formaldehyde condensate, silicone, fluorine-based resin, and polyester-based resin.
  • Examples of the material of the inorganic particles include silica, alumina, zirconia, and titania.
  • the inorganic particles may be amorphous inorganic particles.
  • An example of the amorphous inorganic particles is amorphous silica.
  • the amorphous inorganic particles make it easier to impart the above-mentioned characteristics such as image clarity, transmission haze, and specular gloss to the antiglare sheet 10.
  • the average particle diameter D of the particles 37 may be 1.0 ⁇ m or more and 9.0 ⁇ m or less, 1.5 ⁇ m or more and 7.5 ⁇ m or less, or 1.7 ⁇ m or more and 5.8 ⁇ m or less.
  • the "average particle size” used for particles such as organic particles and inorganic particles is a value specified by (B1) to (B3) below. Although particles may aggregate, the average particle size is the average primary particle size.
  • B1 A cross section of an antiglare sheet containing particles is imaged with a scanning transmission electron microscope (STEM) to obtain an observation image. The imaging area is determined so that the thickness direction of the layer containing the particles to be measured is along the short side of the rectangular imaging area. The magnification during imaging is an appropriate magnification such that the thickness of the layer containing the particles to be measured relative to the length of the short side of the imaging area is 1/3 or more and 2/3 or less.
  • B2 Randomly extract 10 particles from the observation image, and measure the particle diameter of each particle.
  • the particle diameter ( ⁇ m) is the distance between two parallel lines that is the maximum distance between the two lines when the cross section of the particle is sandwiched between the two lines. That is, the particle diameter is the maximum length of the particle in the observation image.
  • the particle diameter is specified as the particle diameter (maximum length) of each particle. That is, the particle diameter is the primary particle diameter.
  • B3 For the same antiglare sheet to be measured, the above steps (B1) and (B2) are repeated five times to measure the particle diameters of a total of 50 particles. The average of the total 50 particle diameter measurements is regarded as the average particle diameter ( ⁇ m) of the particles.
  • the content of particles 37 may be 1 part by mass or more and 30 parts by mass or less, 4 parts by mass or more and 20 parts by mass or less, or 9 parts by mass or more and 15 parts by mass or less, relative to 100 parts by mass of binder resin.
  • the particle content 10 parts by mass or more it becomes easier to impart the above-mentioned characteristics such as image clarity, transmission haze, and specular gloss to the anti-glare sheet 10.
  • the antiglare layer 30 may further contain inorganic fine particles in addition to the binder resin 36 and the particles 37.
  • the inorganic fine particles are distinguished from the above-mentioned particles 37 in terms of average particle diameter.
  • fine unevenness that can be distinguished from the unevenness formed by the particles 37 can be imparted to the uneven surface 31X.
  • the uneven surface 31X including the fine unevenness makes it easy to realize dense and uniform light diffusion.
  • the uneven surface 31X including the fine unevenness makes it easy to impart the above-mentioned characteristics such as image clarity, transmission haze, and specular gloss to the antiglare sheet 10.
  • the anti-glare layer 30 contains inorganic fine particles
  • the difference between the refractive index of the particles 37 and the refractive index of the composition of the anti-glare layer 30 other than the particles 37 becomes smaller. Therefore, the internal haze of the anti-glare layer 30 can be reduced, effectively suppressing glare. In addition, dense and uniform light diffusion is easily achieved.
  • an anti-glare layer 30 containing inorganic fine particles it becomes easier to impart the above-mentioned characteristics such as image clarity, transmission haze, and specular gloss to the anti-glare sheet 10.
  • Examples of materials for inorganic fine particles include silica, alumina, zirconia, and titania.
  • the average particle diameter of the inorganic fine particles may be 1 nm or more and 200 nm or less, 2 nm or more and 100 nm or less, or 5 nm or more and 50 nm or less.
  • the average particle diameter of the inorganic fine particles can be measured in the same manner as the average particle diameter of the particles described above.
  • the content of inorganic microparticles may be 0.7 parts by mass or more and 15 parts by mass or less, 1 part by mass or more and 10 parts by mass or less, or 2 parts by mass or more and 6 parts by mass or less, relative to 100 parts by mass of binder resin. By making the content of inorganic microparticles 0.7 parts by mass or more, it is easier to obtain the effects based on the inorganic microparticles described above.
  • the content of inorganic microparticles may be 15 parts by mass or less.
  • the binder resin 36 may include a cured resin.
  • the cured resin is a cured product of a curable resin composition.
  • the curable resin composition may be a thermosetting resin composition.
  • the curable resin composition may be an ionizing radiation curable resin composition.
  • the binder resin 36 may include a cured product of a curable resin composition and a cured product of an ionizing radiation curable resin composition.
  • Thermosetting resin compositions contain a thermosetting resin.
  • the thermosetting resin composition cures when heated.
  • examples of thermosetting resins include acrylic resins, urethane resins, phenolic resins, urea melamine resins, epoxy resins, unsaturated polyester resins, and silicone resins.
  • the thermosetting resin composition may contain one or more of these curable resins and a curing agent.
  • the ionizing radiation curable resin composition includes a compound having an ionizing radiation curable functional group.
  • the compound having an ionizing radiation curable functional group is also referred to as an "ionizing radiation curable compound".
  • the ionizing radiation curable functional group include ethylenically unsaturated bond groups such as (meth)acryloyl groups, vinyl groups, and allyl groups, as well as epoxy groups and oxetanyl groups.
  • the ionizing radiation curable compound may include an ethylenically unsaturated bond group.
  • the ionizing radiation curable compound may include two or more ethylenically unsaturated bond groups.
  • the ionizing radiation curable compound may be a polyfunctional (meth)acrylate compound containing two or more ethylenically unsaturated bond groups.
  • the polyfunctional (meth)acrylate compound may include either a monomer or an oligomer.
  • the ionizing radiation may be an electromagnetic wave or a charged particle beam.
  • the ionizing radiation has an energy quantum that can polymerize or crosslink molecules. Examples of ionizing radiation include ultraviolet (UV) rays, electron beams (EB), X-rays, gamma rays, alpha rays, ion beams, etc.
  • examples of bifunctional (meth)acrylate monomers include ethylene glycol di(meth)acrylate, bisphenol A tetraethoxy diacrylate, bisphenol A tetrapropoxy diacrylate, 1,6-hexanediol diacrylate, etc.
  • trifunctional or higher (meth)acrylate monomers examples include trimethylolpropane tri(meth)acrylate, pentaerythritol tri(meth)acrylate, pentaerythritol tetra(meth)acrylate, dipentaerythritol hexa(meth)acrylate, dipentaerythritol tetra(meth)acrylate, isocyanuric acid modified tri(meth)acrylate, etc.
  • the (meth)acrylate monomers may have a portion of their molecular skeleton modified.
  • the (meth)acrylate monomer may have a part of its molecular skeleton modified with ethylene oxide, propylene oxide, caprolactone, isocyanuric acid, alkyl, cyclic alkyl, aromatic, bisphenol, etc.
  • polyfunctional (meth)acrylate oligomers include acrylate polymers such as urethane (meth)acrylate, epoxy (meth)acrylate, polyester (meth)acrylate, and polyether (meth)acrylate.
  • Urethane (meth)acrylate can be obtained, for example, by reacting a polyhydric alcohol and an organic diisocyanate with a hydroxy (meth)acrylate.
  • Epoxy (meth)acrylate may be a (meth)acrylate obtained by reacting a trifunctional or higher aromatic epoxy resin, alicyclic epoxy resin, aliphatic epoxy resin, or the like with (meth)acrylic acid.
  • Epoxy (meth)acrylate may be a (meth)acrylate obtained by reacting a bifunctional or higher aromatic epoxy resin, alicyclic epoxy resin, aliphatic epoxy resin, or the like with a polybasic acid and (meth)acrylic acid.
  • the epoxy (meth)acrylate may be a (meth)acrylate obtained by reacting a difunctional or higher aromatic epoxy resin, an alicyclic epoxy resin, an aliphatic epoxy resin, or the like with a phenol and (meth)acrylic acid.
  • a monofunctional (meth)acrylate may be used as the ionizing radiation curable compound.
  • monofunctional (meth)acrylates include methyl (meth)acrylate, ethyl (meth)acrylate, propyl (meth)acrylate, butyl (meth)acrylate, pentyl (meth)acrylate, hexyl (meth)acrylate, cyclohexyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, lauryl (meth)acrylate, stearyl (meth)acrylate, and isobornyl (meth)acrylate.
  • One type of ionizing radiation curable compound may be used alone, or two or more types of ionizing radiation curable compounds may be used in combination.
  • the curable resin composition forming the binder resin 36 may contain additives such as a photopolymerization initiator and a photopolymerization accelerator.
  • a photopolymerization initiator include one or more selected from acetophenone, benzophenone, ⁇ -hydroxyalkylphenone, Michler's ketone, benzoin, benzyl dimethyl ketal, benzoyl benzoate, ⁇ -acyloxime ester, ⁇ -aminoalkylphenone, thioxanthones, etc.
  • the photopolymerization accelerator reduces polymerization inhibition caused by air during curing and increases the curing speed.
  • the photopolymerization accelerator include one or more selected from p-dimethylaminobenzoic acid isoamyl ester, p-dimethylaminobenzoic acid ethyl ester, etc.
  • the binder resin 36 contains a cured product of an ionizing radiation curable resin composition, it may have the following configuration (C1) or (C2).
  • the binder resin 36 contains a cured product of an ionizing radiation curable resin composition and a thermoplastic resin.
  • Binder resin 36 contains substantially only a cured product of an ionizing radiation curable resin composition, and contains 70 mass % or more of a monomer component as the ionizing radiation curable compound contained in the ionizing radiation curable resin composition.
  • the viscosity of the antiglare layer coating liquid for forming the antiglare layer 30 is increased by the thermoplastic resin.
  • the particles 37 are less likely to sink in the antiglare layer coating liquid.
  • the uneven surface 31X which includes fine irregularities, makes it easier to achieve dense and uniform light diffusion. It also makes it easier to impart the above-mentioned characteristics such as image clarity, transmission haze, and specular gloss to the antiglare sheet 10.
  • thermoplastic resins examples include polystyrene resins, polyolefin resins, ABS resins (including heat-resistant ABS resins), AS resins, AN resins, polyphenylene oxide resins, polycarbonate resins, polyacetal resins, acrylic resins, polyethylene terephthalate resins, polybutylene terephthalate resins, polysulfone resins, and polyphenylene sulfide resins.
  • the weight average molecular weight of the thermoplastic resin may be 20,000 or more and 200,000 or less, 30,000 or more and 150,000 or less, or 50,000 or more and 100,000 or less.
  • the weight average molecular weight is the average molecular weight measured by GPC analysis and converted into standard polystyrene.
  • the mass ratio of the cured product of the ionizing radiation curable resin composition to the thermoplastic resin may be 60:40 to 90:10, or 70:30 to 80:20.
  • the effect of increasing the viscosity of the anti-glare layer coating liquid can be effectively obtained.
  • the mechanical strength of the anti-glare layer can be improved.
  • the particles 37 are spread out on the bottom of the anti-glare layer 30, and the particles 37 are easily stacked in some areas. Furthermore, a very thin binder resin 36 covers the particles 37. By adjusting the average particle size of the particles 37, the anti-glare layer 30 is likely to achieve dense and uniform light diffusion. It is also easy to impart the above-mentioned characteristics such as image clarity, transmission haze, and specular gloss to the anti-glare sheet 10.
  • the ratio of the cured product of the ionizing radiation curable resin composition to the total amount of binder resin 36 may be 90% by mass or more, 95% by mass or more, or 100% by mass.
  • the ratio of the monomer component to the total amount of the ionizing radiation curable compound may be 70% by mass or more, or 75% by mass or more.
  • the monomer component may be a polyfunctional (meth)acrylate compound.
  • the antiglare layer 30 may be prepared by drying and curing a coating of the antiglare layer coating liquid.
  • the antiglare layer coating liquid may contain a curable resin composition and particles.
  • the antiglare layer coating liquid for preparing the antiglare layer 30 may contain additives such as an antistatic agent, an antioxidant, a surfactant, a dispersant, and an ultraviolet absorber.
  • the anti-glare layer coating liquid may contain a silicone-based leveling agent (silicone-based compound) as an additive.
  • a silicone-based leveling agent silicone-based compound
  • the anti-glare layer coating liquid may contain a silicone-based leveling agent (silicone-based compound) as an additive.
  • the anti-glare layer coating liquid may contain a solvent.
  • the viscosity of the anti-glare layer coating liquid can be adjusted by the solvent.
  • the dispersion of each component can be controlled by the solvent.
  • the surface properties of the obtained anti-glare layer 30 change depending on the type of solvent.
  • the type of solvent may be selected taking into consideration the saturated vapor pressure, the permeability of the solvent into the transparent substrate, etc.
  • the solvent examples include ketones (acetone, methyl ethyl ketone, methyl isobutyl ketone (MIBK), cyclohexanone, etc.), ethers (dioxane, tetrahydrofuran, etc.), aliphatic hydrocarbons (hexane, etc.), alicyclic hydrocarbons (cyclohexane, etc.), aromatic hydrocarbons (toluene, xylene, etc.), halogenated carbons (dichloromethane, dichloroethane, etc.), esters (methyl acetate, ethyl acetate, butyl acetate, etc.), alcohols (isopropanol, butanol, cyclohexanol, etc.), cellosolves (methyl cellosolve, ethyl cellosolve, etc.), glycol ethers (propylene glycol monomethyl ether acetate, etc.), cellosolve a
  • the anti-glare layer coating liquid may contain a solvent with a fast evaporation rate.
  • a solvent with a fast evaporation rate By increasing the evaporation rate of the solvent, the particles 37 can be prevented from settling to the bottom of the anti-glare layer 30. This makes it easier for the obtained anti-glare layer 30 to achieve dense and uniform light diffusion. This makes it easier to impart the above-mentioned characteristics such as image clarity, transmission haze, and specular gloss to the anti-glare sheet 10.
  • a fast evaporating solvent means a solvent with an evaporation rate of 100 or more, assuming that the evaporation rate of butyl acetate is 100.
  • the evaporation rate of a fast evaporating solvent may be 120 to 300 or 150 to 220.
  • Examples of fast evaporating solvents include methyl isobutyl ketone (evaporation rate 160), toluene (evaporation rate 200), and methyl ethyl ketone (evaporation rate 370).
  • the anti-glare layer coating liquid may contain a small amount of a solvent with a slow evaporation rate in addition to a solvent with a fast evaporation rate.
  • a solvent with a slow evaporation rate means a solvent with an evaporation rate of less than 100, where the evaporation rate of butyl acetate is 100.
  • the evaporation rate of a solvent with a slow evaporation rate may be 20 or more and 60 or less, or 25 or more and 40 or less. Examples of solvents with a slow evaporation rate include cyclohexanone (evaporation rate 32) and propylene glycol monomethyl ether acetate (evaporation rate 44).
  • the drying conditions of the coating film of the anti-glare layer coating liquid may be adjusted.
  • the drying conditions can be adjusted by the drying temperature and the wind speed inside the dryer.
  • the drying temperature may be 30°C or higher and 120°C or lower.
  • the drying wind speed may be 0.2 m/s or higher and 50 m/s or lower.
  • the coating film may be irradiated with ionizing radiation after drying.
  • the antiglare sheet 10 shown in Fig. 2 further includes a functional layer 40.
  • the functional layer 40 constitutes the first surface 11.
  • the illustrated functional layer 40 is a low refractive index layer.
  • the low refractive index layer has a refractive index lower than the refractive index of the adjacent layer.
  • the functional layer 40 as a low refractive index layer is a low reflection layer or a reflection suppression layer having a function of suppressing reflection.
  • the functional layer 40 may include a binder resin and particles.
  • the particles may be low refractive index particles.
  • the refractive index of the particles may be lower than the refractive index of the binder resin.
  • the refractive index of the functional layer 40 is reduced by including particles with a low refractive index.
  • the refractive index of the functional layer 40 is lower than the refractive index of the anti-glare layer 30.
  • the functional layer 40 can suppress the reflection of incident light due to its refractive index and thickness.
  • the anti-reflection function of the functional layer 40 is based on the interference of light reflected on both surfaces of the functional layer 40.
  • the refractive index of the functional layer 40 may be between the refractive indexes of two regions adjacent to the functional layer 40 on both sides.
  • the thickness (nm) of the functional layer 40 may be about 1/4 of the wavelength ⁇ (nm) of the light whose reflection is to be suppressed.
  • the refractive index of the functional layer 40 and the average thickness of the functional layer 40 can be set as follows.
  • the refractive index of the functional layer may be 1.10 or more, 1.20 or more, 1.26 or more, 1.28 or more, or 1.30 or more.
  • the refractive index of the functional layer may be 1.48 or less, 1.45 or less, 1.40 or less, 1.38 or less, or 1.35 or less.
  • the refractive index used for the components that make up the anti-glare sheet is the refractive index for a wavelength of 589.3 nm.
  • the thickness of the functional layer 40 may be 80 nm or more, 85 nm or more, or 90 nm or more.
  • the thickness of the functional layer may be 150 nm or less, 110 nm or less, or 105 nm or less.
  • the binder resin contained in the functional layer 40 may be the same as the binder resin contained in the antiglare layer 30.
  • the binder resin contained in the functional layer 40 may include a cured product of a curable resin composition.
  • the curable resin composition may include one or more of a thermosetting resin composition and an ionizing radiation curable resin composition.
  • the particles contained in the functional layer 40 may be the same as the particles 37 contained in the antiglare layer 30.
  • the functional layer 40 may contain one or more organic particles and inorganic particles.
  • the functional layer 40 may contain one or more of hollow silica, solid silica, and magnesium fluoride particles as inorganic particles.
  • Hollow silica particles have an outer shell layer made of silica.
  • the inside of the particle surrounded by the outer shell layer is hollow. Air may be contained inside the cavity.
  • hollow silica particles have a refractive index lower than that of silica. The refractive index of hollow silica particles decreases when the volume of the internal cavity is large. Hollow silica particles decrease the refractive index of the entire functional layer 40.
  • the functional layer 40 may be prepared by a wet method, similar to the anti-glare layer 30.
  • the functional layer 40 may be prepared using a functional layer coating liquid for forming the functional layer 40.
  • the functional layer 40 may be prepared by drying and curing a coating film of the functional layer coating liquid.
  • the functional layer coating liquid for preparing the functional layer 40 may contain an additive that can be applied to the anti-glare layer coating liquid.
  • the antiglare sheet 10 shown in Fig. 3 includes a functional layer 40 and a second functional layer 50.
  • the functional layer 40 may be configured similarly to the above-mentioned functional layer 40 included in the antiglare sheet 10 shown in Fig. 2. That is, the functional layer 40 constitutes the first surface 11.
  • the functional layer 40 is a low refractive index layer.
  • the low refractive index layer has a refractive index lower than the refractive index of the adjacent second functional layer 50.
  • the second functional layer 50 is located between the functional layer 40 and the anti-glare layer 30 in the first direction D1, which is the stacking direction.
  • the second functional layer 50 has a refractive index higher than the refractive index of the anti-glare layer 30 and the refractive index of the functional layer 40.
  • the functional layer 40 as a low refractive index layer and the second functional layer 50 as a high refractive index layer function as a low reflection layer or reflection suppression layer, and suppress reflection on the first surface 11.
  • the second functional layer 50 may include a binder resin and particles.
  • the particles may be high refractive index particles.
  • the refractive index of the particles may be higher than the refractive index of the binder resin.
  • the refractive index of the second functional layer 50 is increased by including particles with a high refractive index.
  • the refractive index of the second functional layer 50 is higher than the refractive index of the anti-glare layer 30.
  • the refractive index of the second functional layer 50 and the average thickness of the functional layer may be set as follows:
  • the refractive index of the second functional layer may be 1.55 or more, or may be 1.56 or more.
  • the refractive index of the second functional layer may be 1.85 or less, or may be 1.75 or less.
  • the thickness of the second functional layer 50 may be 50 nm or more.
  • the thickness of the second functional layer may be 200 nm or less, or may be 180 nm or less.
  • the binder resin contained in the second functional layer 50 may be the same as the binder resin contained in the antiglare layer 30.
  • the binder resin contained in the second functional layer 50 may include a cured product of a curable resin composition.
  • the curable resin composition may include one or more of a thermosetting resin composition and an ionizing radiation curable resin composition.
  • the particles contained in the second functional layer 50 may be similar to the particles 37 contained in the antiglare layer 30.
  • the second functional layer 50 may contain one or more organic particles and inorganic particles. Examples of particles contained in the second functional layer 50 include antimony pentoxide, zinc oxide, titanium oxide, cerium oxide, tin-doped indium oxide, antimony-doped tin oxide, yttrium oxide, and zirconium oxide.
  • the second functional layer 50 may be prepared by a wet method, similar to the anti-glare layer 30.
  • the second functional layer 50 may be prepared using a second functional layer coating liquid for forming the second functional layer 50.
  • the second functional layer 50 may be prepared by drying and curing the coating film of the second functional layer coating liquid.
  • the second functional layer coating liquid for preparing the second functional layer 50 may contain an additive that can be applied to the anti-glare layer coating liquid.
  • a long sheet article 5 including a large number of anti-glare sheets 10 can be manufactured as shown in Fig. 4.
  • the anti-glare sheet 10 is obtained by cutting the long sheet article 5 to a predetermined size.
  • anti-glare sheets 10 having various dimensions can be obtained from the long sheet article 5 in accordance with needs. Therefore, anti-glare sheets 10 having various dimensions can be provided in a timely manner.
  • Fig. 4 by handling the sheet article 5 as a roll 7 wound around a winding core centered on the winding axis RA, the handleability of the sheet article 5 can be improved.
  • the antiglare sheet 10 may be applied to a polarizing plate 60.
  • the polarizing plate 60 includes a first protective sheet 61, a polarizer 62, and a second protective sheet 63.
  • the first protective sheet 61 and the second protective sheet 63 sandwich the polarizer 62 between them and cover both sides.
  • At least one of the first protective sheet 61 and the second protective sheet 63 may include the antiglare sheet 10.
  • the first protective sheet 61 located on the first side (observer side) in the first direction D1 may include the antiglare sheet 10.
  • the other protective sheet may be a resin film.
  • the polarizer 62 transmits one linearly polarized component and blocks the other linearly polarized component.
  • the polarizer 62 may be an absorptive polarizer that absorbs the other linearly polarized component.
  • the polarizer 62 may be a reflective polarizer that reflects the other linearly polarized component.
  • the polarizer 62 may be a sheet-type polarizer such as a polyvinyl alcohol film, a polyvinyl formal film, a polyvinyl acetal film, or an ethylene-vinyl acetate copolymer saponified film that has been dyed with iodine or the like and stretched.
  • the polarizer 62 may be a wire-grid type polarizer made of a large number of metal wires arranged in parallel.
  • the polarizer 62 may be a coating type polarizer coated with lyotropic liquid crystal or a dichroic guest-host material, or a multilayer thin-film type polarizer.
  • the anti-glare sheet 10 may be applied to a display device 65.
  • the display device 65 includes a display element 66 and the anti-glare sheet 10.
  • the display element 66 has an image forming surface 66a that displays an image.
  • the anti-glare sheet 10 is superimposed on the display element 66 such that its second surface 12 faces the image forming surface 66a.
  • the anti-glare sheet 10 may be bonded to the display element 66 via a bonding layer including an adhesive, a pressure sensitive adhesive, or the like.
  • the display element 66 is not particularly limited. Examples of the display element 66 include a liquid crystal display element, an EL display element, a plasma display element, and an electronic paper element.
  • the observer views the image displayed by the display element 66 through the anti-glare sheet 10.
  • the anti-glare sheet 10 effectively achieves both improved anti-glare properties and reduced glare. Therefore, in a display device 65 to which the anti-glare sheet 10 is applied, background images in the environment in which the display device 65 is placed, such as lighting devices, can be prevented from being reflected in the anti-glare sheet 10.
  • background images in the environment in which the display device 65 is placed such as lighting devices
  • glare that may occur on the display surface of the display device 65 can be effectively made less noticeable.
  • deterioration of the image displayed by the display device 65 can be effectively prevented.
  • the observer can view high-quality images.
  • the contour of the object observed through the anti-glare sheet 10 is unclear. Furthermore, it is possible to effectively prevent the anti-glare sheet 10 from becoming cloudy and the contrast of the object observed through the anti-glare sheet 10 from decreasing. Therefore, in a display device 65 to which the anti-glare sheet 10 is applied, the contour of the image formed by the display element 66 can be clearly observed while suppressing the reflection of the background. In a display device 65 to which the anti-glare sheet 10 is applied, it is possible to prevent the image displayed by the display device 65 from becoming cloudy. The observer can observe a high-contrast, high-quality image.
  • FIG. 7 shows an anti-glare article 70 to which the anti-glare sheet 10 is applied.
  • the anti-glare article 70 includes the anti-glare sheet 10. and a bonded article 71 to which the antiglare sheet 10 is bonded.
  • the antiglare sheet 10 is superimposed on the bonded article 71 such that the second surface 12 faces the bonded article 71.
  • the antiglare sheet 10 may be bonded to the article 71 via a bonding layer containing an adhesive or a pressure sensitive adhesive.
  • the article 71 may be an instrument panel, a watch, a showcase, a show window, or the like. Examples of the article to be joined 71 include a front panel of a display device, a window, and the like.
  • the article to be joined 71 may be a transparent substrate such as glass or a resin film.
  • Example 1>> A biaxially stretched polyethylene terephthalate film having a thickness of 38 ⁇ m was used as the substrate.
  • This substrate was a product name "Cosmoshine A4360" manufactured by Toyobo Co., Ltd.
  • the retardation of the substrate was 2000 nm (thickness 38 ⁇ m).
  • the antiglare layer coating solution 1 having the following formulation was applied onto the substrate to form a coating film of the antiglare layer coating solution 1 on the substrate.
  • the coating film was then dried at 70°C and a wind speed of 5 m/s for 30 seconds. Thereafter, the coating film was irradiated with ultraviolet light at an integrated light quantity of 100 mJ/ cm2 in a nitrogen atmosphere with an oxygen concentration of 200 ppm or less.
  • An antiglare layer made of the cured coating film was formed on the substrate to obtain an antiglare sheet of Example 1.
  • the thickness of the antiglare layer was 2.5 ⁇ m.
  • Example 2 differs from the above-mentioned Example 1 in that antiglare layer coating solution 1 was changed to the following antiglare layer coating solution 2. Otherwise, the antiglare sheet of Example 2 was obtained using the same materials and the same method as in Example 1.
  • Example 3 differs from Example 1 in that the antiglare layer coating solution 1 was changed to the following antiglare layer coating solution 3, and the substrate was changed.
  • the antiglare sheet of Example 2 was obtained using the same materials and method as in Example 1.
  • a triacetyl cellulose resin film having a thickness of 40 ⁇ m was used as the substrate of Example 3.
  • This substrate was a product name "TD40UL" manufactured by Fuji Film Corporation.
  • Example 4 differs from Example 1 in that the cumulative amount of UV radiation was 50 mJ/ cm2 .
  • the antiglare sheet of Example 4 was obtained using the same materials and methods as Example 1.
  • Example 5 differs from Example 1 in that the substrate was changed, and the antiglare sheet of Example 5 was obtained using the same materials and the same method as Example 1.
  • a biaxially oriented polyethylene terephthalate film having a thickness of 75 ⁇ m was used as the substrate of Example 5.
  • This substrate was a product name "Cosmoshine A4360" manufactured by Toyobo Co., Ltd.
  • Example 6 differs from Example 1 in that the antiglare layer coating solution 1 was changed to the above-mentioned antiglare layer coating solution 3 and the substrate was changed, but the antiglare sheet of Example 6 was obtained using the same materials and method as Example 1.
  • a triacetyl cellulose resin film having a thickness of 60 ⁇ m was used as the substrate of Example 6. This substrate was a product name "TD60UL" manufactured by Fuji Film Corporation.
  • Example 7 differs from Example 1 in that the antiglare layer coating solution 1 was changed to the above-mentioned antiglare layer coating solution 3 and the substrate was changed, but the antiglare sheet of Example 7 was obtained using the same materials and method as Example 1.
  • the substrate of Example 7 a triacetyl cellulose resin film having a thickness of 80 ⁇ m was used. This substrate was a product name "TD80UL" manufactured by Fuji Film Corporation.
  • Example 8 differs from Example 1 in that the antiglare layer coating solution 1 was changed to the above-mentioned antiglare layer coating solution 3, the substrate was changed, and the integrated light amount of UV irradiation was set to 50 mJ/ cm2 .
  • the antiglare sheet of Example 8 was obtained using the same materials and the same method as Example 1.
  • a triacetyl cellulose resin film having a thickness of 40 ⁇ m was used as the substrate of Example 8. This substrate was a product name "TD40UL" manufactured by Fuji Film Corporation.
  • Example 9 differs from the above-mentioned Example 1 in that the antiglare layer coating solution 1 was changed to the above-mentioned antiglare layer coating solution 2 and in that the substrate was changed, but otherwise the antiglare sheet of Example 9 was obtained using the same materials and in the same manner as in Example 1.
  • a polymethyl methacrylate resin film having a thickness of 75 ⁇ m was used as the substrate of Example 9.
  • Example 10 differs from the above-mentioned Example 1 in that antiglare layer coating solution 1 was changed to the following antiglare layer coating solution 4. Otherwise, the antiglare sheet of Example 10 was obtained using the same materials and method as in Example 1.
  • Example 11 differs from the above-mentioned Example 1 in that antiglare layer coating solution 1 was changed to the following antiglare layer coating solution 5. Otherwise, the antiglare sheet of Example 11 was obtained using the same materials and method as in Example 1.
  • Example 12 differs from the above-mentioned Example 1 in that antiglare layer coating solution 1 was changed to the following antiglare layer coating solution 6. Otherwise, the antiglare sheet of Example 12 was obtained using the same materials and method as in Example 1.
  • Example 13 differs from Example 1 described above in that antiglare layer coating solution 1 was changed to the following antiglare layer coating solution 7; otherwise, the antiglare sheet of Example 13 was obtained using the same materials and in the same manner as Example 1.
  • Example 14 differs from Example 1 in that the cumulative amount of UV radiation was 150 mJ/ cm2. Otherwise, the antiglare sheet of Example 14 was obtained using the same materials and the same method as in Example 1.
  • Example 15 differs from the above-mentioned Example 1 in that antiglare layer coating solution 1 was changed to the following antiglare layer coating solution 8. Otherwise, the antiglare sheet of Example 15 was obtained using the same materials and method as in Example 1.
  • Example 16 differs from the above-mentioned Example 1 in that antiglare layer coating solution 1 was changed to the following antiglare layer coating solution 9. Otherwise, the antiglare sheet of Example 16 was obtained using the same materials and method as in Example 1.
  • Comparative Example 1 differs from the above-mentioned Example 1 in that antiglare layer coating solution 1 was changed to the following antiglare layer coating solution 21. Otherwise, the antiglare sheet of Comparative Example 1 was obtained using the same materials and in the same manner as in Example 1.
  • Comparative Example 2 differs from Example 1 in that the antiglare layer coating solution 1 was changed to the above-mentioned antiglare layer coating solution 21 and the substrate was changed, but the antiglare sheet of Comparative Example 2 was obtained using the same materials and method as Example 1.
  • a triacetyl cellulose resin film having a thickness of 40 ⁇ m was used as the substrate of Comparative Example 2. This substrate was a product name "TD40UL" manufactured by Fuji Film Corporation.
  • Comparative Example 3 differs from the above-mentioned Example 1 in that antiglare layer coating solution 1 was changed to the following antiglare layer coating solution 22, and the thickness of the antiglare layer was changed to 5.0 ⁇ m. Otherwise, the antiglare sheet of Comparative Example 3 was obtained using the same materials and in the same manner as Example 1.
  • Comparative Example 4 differs from Example 1 in that the antiglare layer coating solution 1 was changed to the above-mentioned antiglare layer coating solution 22, the substrate was changed, and the thickness of the antiglare layer was changed to 5.0 ⁇ m.
  • An antiglare sheet of Comparative Example 4 was obtained using the same materials and method as Example 1.
  • a biaxially stretched polyethylene terephthalate film having a thickness of 75 ⁇ m was used as the substrate of Comparative Example 4. This substrate was a product name "Cosmoshine A4360" manufactured by Toyobo Co., Ltd.
  • Comparative Example 5 differs from Example 1 in that the antiglare layer coating solution 1 was changed to the above-mentioned antiglare layer coating solution 22, the substrate was changed, and the thickness of the antiglare layer was changed to 5.0 ⁇ m.
  • An antiglare sheet of Comparative Example 5 was obtained using the same materials and method as Example 1.
  • a triacetyl cellulose resin film having a thickness of 40 ⁇ m was used as the substrate of Comparative Example 5. This substrate was a product name "TD40UL" manufactured by Fuji Film Corporation.
  • Comparative Example 6 differs from the above-mentioned Example 1 in that antiglare layer coating solution 1 was changed to the following antiglare layer coating solution 23, and the thickness of the antiglare layer was changed to 6.0 ⁇ m. Otherwise, the antiglare sheet of Comparative Example 6 was obtained using the same materials and in the same manner as Example 1.
  • Comparative Example 7 differs from Example 1 in that the antiglare layer coating solution 1 was changed to the above-mentioned antiglare layer coating solution 23, the substrate was changed, and the thickness of the antiglare layer was changed to 6.0 ⁇ m.
  • An antiglare sheet of Comparative Example 7 was obtained using the same materials and method as Example 1.
  • a biaxially stretched polyethylene terephthalate film having a thickness of 75 ⁇ m was used as the substrate of Comparative Example 7. This substrate was a product name "Cosmoshine A4360" manufactured by Toyobo Co., Ltd.
  • the antiglare sheets according to the examples and comparative examples were measured and evaluated.
  • the measurement environment for each measurement and evaluation was a temperature of 23° C. ⁇ 2° C. and a relative humidity of 50% ⁇ 5%. Before the start of each measurement and evaluation, the target sample was placed in the above-mentioned measurement environment for 16 hours.
  • Transmission haze>> A sample of 10 cm x 10 cm was cut out from the antiglare sheets according to the examples and comparative examples. The samples were visually confirmed to be free of any abnormalities such as dust or scratches. The transmission haze (%) of the antiglare sheets according to each example was measured using the method described above. A haze meter "HM-150" manufactured by Murakami Color Research Laboratory was used to measure the transmission haze. The measurement results of the transmission haze are shown in the "Hz" column of Tables 1A and 1B.
  • the external haze (%) was calculated from the measured values of the transmission haze and internal haze for the antiglare sheets according to the examples and comparative examples.
  • the external haze is shown as "OHz" in Tables 1A and 1B.
  • the external haze was calculated by subtracting the measurement results of the internal haze from the measurement results of the transmission haze shown in Tables 1A and 1B.
  • Total light transmittance >> A sample of 10 cm x 10 cm was cut out from each of the anti-glare sheets according to the examples and the comparative examples. The samples were visually inspected to ensure that there were no defects such as dust or scratches. The total light transmittance (%) of the sheet was measured. A haze meter "HM-150" manufactured by Murakami Color Research Laboratory was used to measure the total light transmittance. The measurement results of the total light transmittance are shown in Table 1A. and shown in "Tt" in Table 1B.
  • Image clarity>> A sample of 10 cm x 10 cm was cut out from the anti-glare sheet according to the embodiment and the comparative example. The sample was visually confirmed to be free of any abnormalities such as dust or scratches.
  • the image clarity of the anti-glare sheet according to each example was measured by the above-mentioned method. The measurement results of image clarity C (0.125) using an optical comb with a width of 0.125, image clarity C (0.5) using an optical comb with a width of 0.5, image clarity C (1.0) using an optical comb with a width of 1.0, and image clarity C (2.0) using an optical comb with a width of 2.0 were obtained.
  • the "Ratio,” “Difference,” and “Difference/Average” in Tables 2A and 2B respectively show the image clarity ratio, image clarity difference, and the ratio of the image clarity difference to the image clarity average, all calculated from the measured image clarity values.
  • the image clarity ratio is the ratio of image clarity C (0.125) to image clarity C (2.0).
  • the image clarity ratio is obtained by dividing image clarity C (0.125) by image clarity C (2.0).
  • the image clarity difference is obtained by subtracting image clarity C (0.125) from image clarity C (2.0).
  • the image clarity average is the average value of image clarity C (2.0) and image clarity C (0.125).
  • SD standard deviation SD of image clarity
  • CV coefficient of variation CV of image clarity
  • the coefficient of variation is obtained by dividing the standard deviation by the mean.
  • the coefficient of variation CV of image clarity is obtained by dividing the standard deviation of image clarity C(2.0), image clarity C(1.0), image clarity C(0.5), and image clarity C(0.125) by the average of image clarity C(2.0), image clarity C(1.0), image clarity C(0.5), and image clarity C(0.125).
  • the total image clarity is the sum of image clarity C(2.0), image clarity C(1.0), image clarity C(0.5), and image clarity C(0.125).
  • Glare level>> The glare intensity of the anti-glare sheets according to the examples and the comparative examples was measured. The measurement results of the glare intensity are shown in the "Glare Intensity" column of Tables 1A and 1B. The glare intensity was measured as follows.
  • the second surface of the anti-glare sheet and the surface of the black matrix (glass thickness 0.7 mm, pixel density of the black matrix equivalent to 200 ppi) 300 on which the matrix is not formed were bonded together via a transparent adhesive layer 200 (25 ⁇ m thick, Panac Panaclean PD-S1 manufactured by Panac) to minimize wrinkles, stains such as fingerprints, and dust and air bubbles, to create a sample for evaluating glare.
  • a transparent adhesive layer 200 25 ⁇ m thick, Panac Panaclean PD-S1 manufactured by Panac
  • FIG. 8 is a schematic diagram of the above-mentioned measurement.
  • image processing software (ImagePro Plus ver. 6.2; Media Cybernetics)
  • images taken with the CCD camera were imported into a personal computer via an image board (Pro-Series Capture Kit Spectrim Pro for Windows 2000 & XP Pro Version 5.1), and image data consisting of a collection of the brightness of each pixel was obtained.
  • image board Pro-Series Capture Kit Spectrim Pro for Windows 2000 & XP Pro Version 5.1
  • image data consisting of a collection of the brightness of each pixel was obtained.
  • the same software was also used for analysis as follows.
  • the brightness of the imported screen data displayed in Menu ⁇ Import ⁇ Video/Digital was set to 32, contrast to 40, hue to 32, and saturation to 32, with the other items following the default settings.
  • an evaluation point of 200 x 160 pixels (10 mm x 8 mm on the sample) was selected from the captured image data, and the evaluation point was converted to 16-bit grayscale.
  • a low-pass filter was selected from the emphasis tab of the filter command, and a filter was applied under the conditions of "3 x 3, number of times 3, strength 10". This removed the components derived from the black matrix pattern.
  • flattening was selected, and shading correction was performed under the conditions of "background: dark, object width 10".
  • contrast enhancement was performed using the contrast enhancement command with "contrast: 96, brightness: 48".
  • the obtained image data was converted to 8-bit grayscale (256-level grayscale).
  • the obtained image data was converted to 256-level brightness (unitless because it is a converted value) with a maximum value of 255 and a minimum value of 0.
  • the brightness of the light source was adjusted so that the average brightness of this area was between 120 and 140.
  • the sample was attached to a display element using a transparent adhesive medium.
  • the display element was a product name "Xperia (registered trademark) Z5 E6653” manufactured by Sony Corporation.
  • the transparent adhesive medium was a product name "FIXFILM HGA2” manufactured by Fujicopian Co., Ltd.
  • the transparent adhesive medium included a transparent adsorption layer, a transparent substrate having a thickness of 50 ⁇ m, and a transparent adhesive layer in this order.
  • the adsorption layer of the transparent adhesive medium was bonded to the image forming surface of the display element.
  • the adhesive layer of the transparent adhesive medium was bonded to the second surface of the anti-glare sheet. It was visually confirmed that there were no abnormalities such as dust or scratches on the first surface of the measurement sample.
  • the sample attached to the display element was placed on a horizontal stand 70 cm high with the first surface facing upward. In a bright room environment, the image displayed by the display element was confirmed through an anti-glare sheet.
  • the lighting device was placed 2 m above the horizontal stand in the vertical direction.
  • the light-emitting part of the lighting device was a Hf32 type straight tube three-wavelength daylight white fluorescent lamp.
  • the illuminance on the first surface of the measurement sample was 500 lux to 1000 lux.
  • the evaluator's line of sight was approximately 160 cm from the floor.
  • the evaluators were 20 healthy people in their 30s with eyesight of 0.7 or higher.
  • the observation results were evaluated according to the following evaluation criteria. The evaluation results are shown in the "Visibility" column of Tables 1A and 1B. Evaluation "A” was at a level that would be considered good in normal product inspection.
  • Evaluation "C” was at a level that would be considered bad in normal product inspection.
  • a sample having a size of 12 cm x 12 cm was cut out from the antiglare sheet according to the embodiment and the comparative example.
  • a black plate (10 cm x 10 cm) was attached to the second surface of the sample to be evaluated in each example via an optically transparent adhesive sheet.
  • the optically transparent adhesive sheet was "Panaclean PD-S1" manufactured by Panac Corporation.
  • the black plate was "Comoglass 502K (black)” manufactured by Kuraray Co., Ltd. It was visually confirmed that there were no abnormalities such as dust or scratches on the first surface of the evaluation sample prepared by attaching the black plate.
  • the evaluation sample was placed on a horizontal stand 70 cm high with the first surface facing upward.
  • the evaluator observed the reflection of the lighting device from the angle of the regular reflection direction of the illumination light from the lighting device.
  • the position of the evaluation sample was adjusted relative to the lighting device so that the angle of incidence of the illumination light emitted from the center of the lighting device on the evaluation sample was 10°.
  • the light-emitting part of the lighting device was a Hf32 type straight tube three-wavelength daylight white fluorescent lamp.
  • the lighting device was positioned 2 m above the horizontal stand in the vertical direction.
  • the illuminance on the first surface of the evaluation sample was 500 lux to 1000 lux.
  • the line of sight of the evaluator was approximately 160 cm from the floor.
  • the evaluators were 20 healthy people in their 30s with eyesight of 0.7 or more.
  • the observation results of the first surface of the evaluation sample in the area where the black board was attached were evaluated according to the following evaluation criteria.
  • the evaluation results are shown in the "Anti-glare" column of Tables 1A and 1B.
  • An "A” rating would be considered passable in normal product testing.
  • a “C” rating would be considered failable in normal product testing.
  • D1 first direction, D2: second direction, D3: third direction, 5: sheet article, 6: winding core, 7: roll, RA: winding axis, 10: anti-glare sheet, 11: first surface, 11X: uneven surface, 12: second surface, 20: substrate, 30: anti-glare layer, 31: first surface, 31X: uneven surface, 32: second surface, 36: binder resin, 37: particles, 40: functional layer, 50: second functional layer, 60: polarizing plate, 61: first protective sheet, 62: polarizer, 63: second protective sheet, 65: display device, 66: display element, 66a: image forming surface, 70: anti-glare article, 71: bonded article, 75: display element, 75a: image forming surface, 76: transparent adhesive medium, 77: CCD camera

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Nonlinear Science (AREA)
  • Polarising Elements (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
PCT/JP2024/026851 2023-07-27 2024-07-26 防眩シート、シート物品、偏光板、表示装置、及び防眩物品 Pending WO2025023326A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2025535886A JPWO2025023326A1 (https=) 2023-07-27 2024-07-26
CN202480049246.XA CN121569220A (zh) 2023-07-27 2024-07-26 防眩片材、片材物品、偏光板、显示装置以及防眩物品
KR1020267004582A KR20260038927A (ko) 2023-07-27 2024-07-26 방현 시트, 시트 물품, 편광판, 표시 장치, 및 방현 물품

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2023122874 2023-07-27
JP2023-122874 2023-07-27

Publications (1)

Publication Number Publication Date
WO2025023326A1 true WO2025023326A1 (ja) 2025-01-30

Family

ID=94374791

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2024/026851 Pending WO2025023326A1 (ja) 2023-07-27 2024-07-26 防眩シート、シート物品、偏光板、表示装置、及び防眩物品

Country Status (5)

Country Link
JP (1) JPWO2025023326A1 (https=)
KR (1) KR20260038927A (https=)
CN (1) CN121569220A (https=)
TW (1) TW202526378A (https=)
WO (1) WO2025023326A1 (https=)

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010113827A1 (ja) * 2009-03-30 2010-10-07 日本製紙ケミカル株式会社 防眩ハードコートフィルム
WO2013015332A1 (ja) * 2011-07-26 2013-01-31 大日本印刷株式会社 防眩性フィルム、偏光板及び画像表示装置
WO2013054805A1 (ja) * 2011-10-12 2013-04-18 大日本印刷株式会社 画像表示装置用防眩シート
JP2014232277A (ja) * 2013-05-30 2014-12-11 リンテック株式会社 防眩性ハードコートフィルム
JP2016157387A (ja) * 2015-02-26 2016-09-01 大日本印刷株式会社 タッチパネル、表示装置及び光学シート、並びに光学シートの選別方法及び光学シートの製造方法
WO2017061493A1 (ja) * 2015-10-09 2017-04-13 大日本印刷株式会社 光学シート、偏光板、光学シートの選別方法及び光学シートの製造方法、並びに表示装置
WO2019065865A1 (ja) * 2017-09-29 2019-04-04 大日本印刷株式会社 防眩フィルム及びそれを用いた表示装置
CN110119004A (zh) * 2019-06-03 2019-08-13 明基材料有限公司 防眩膜及具有此防眩膜的偏光板
CN111366994A (zh) * 2020-03-03 2020-07-03 明基材料有限公司 防眩膜及具有此防眩膜的偏光板
US20210240222A1 (en) * 2020-01-31 2021-08-05 Au Optronics Corporation Optical film and display module having the same
JP2023066397A (ja) * 2021-10-28 2023-05-15 大日本印刷株式会社 防眩フィルム及び画像表示装置
JP2023108836A (ja) * 2022-01-26 2023-08-07 三菱ケミカル株式会社 硬化膜及び積層体、並びにこれらの製造方法
JP7343024B1 (ja) * 2022-09-30 2023-09-12 大日本印刷株式会社 光学フィルム、並びに、前記光学フィルムを用いた偏光板、表面板、画像表示パネル及び画像表示装置、並びに、前記光学フィルムの製造方法、並びに、光学フィルムの選定方法、並びに、指紋拭き取り性の評価方法
JP7380960B1 (ja) * 2022-04-27 2023-11-15 大日本印刷株式会社 光学フィルム、画像表示パネル及び画像表示装置
JP2024028139A (ja) * 2022-08-18 2024-03-01 三星電子株式会社 樹脂膜、樹脂膜の作成方法、表示装置、光学部材および偏光部材

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010113827A1 (ja) * 2009-03-30 2010-10-07 日本製紙ケミカル株式会社 防眩ハードコートフィルム
WO2013015332A1 (ja) * 2011-07-26 2013-01-31 大日本印刷株式会社 防眩性フィルム、偏光板及び画像表示装置
WO2013054805A1 (ja) * 2011-10-12 2013-04-18 大日本印刷株式会社 画像表示装置用防眩シート
JP2014232277A (ja) * 2013-05-30 2014-12-11 リンテック株式会社 防眩性ハードコートフィルム
JP2016157387A (ja) * 2015-02-26 2016-09-01 大日本印刷株式会社 タッチパネル、表示装置及び光学シート、並びに光学シートの選別方法及び光学シートの製造方法
WO2017061493A1 (ja) * 2015-10-09 2017-04-13 大日本印刷株式会社 光学シート、偏光板、光学シートの選別方法及び光学シートの製造方法、並びに表示装置
WO2019065865A1 (ja) * 2017-09-29 2019-04-04 大日本印刷株式会社 防眩フィルム及びそれを用いた表示装置
CN110119004A (zh) * 2019-06-03 2019-08-13 明基材料有限公司 防眩膜及具有此防眩膜的偏光板
US20210240222A1 (en) * 2020-01-31 2021-08-05 Au Optronics Corporation Optical film and display module having the same
CN111366994A (zh) * 2020-03-03 2020-07-03 明基材料有限公司 防眩膜及具有此防眩膜的偏光板
JP2023066397A (ja) * 2021-10-28 2023-05-15 大日本印刷株式会社 防眩フィルム及び画像表示装置
JP2023108836A (ja) * 2022-01-26 2023-08-07 三菱ケミカル株式会社 硬化膜及び積層体、並びにこれらの製造方法
JP7380960B1 (ja) * 2022-04-27 2023-11-15 大日本印刷株式会社 光学フィルム、画像表示パネル及び画像表示装置
JP2024028139A (ja) * 2022-08-18 2024-03-01 三星電子株式会社 樹脂膜、樹脂膜の作成方法、表示装置、光学部材および偏光部材
JP7343024B1 (ja) * 2022-09-30 2023-09-12 大日本印刷株式会社 光学フィルム、並びに、前記光学フィルムを用いた偏光板、表面板、画像表示パネル及び画像表示装置、並びに、前記光学フィルムの製造方法、並びに、光学フィルムの選定方法、並びに、指紋拭き取り性の評価方法

Also Published As

Publication number Publication date
CN121569220A (zh) 2026-02-24
TW202526378A (zh) 2025-07-01
JPWO2025023326A1 (https=) 2025-01-30
KR20260038927A (ko) 2026-03-19

Similar Documents

Publication Publication Date Title
US9835768B2 (en) Anti-glare film, polarizer, liquid-crystal panel, and image display device
JP6212844B2 (ja) 光学フィルム、偏光板、液晶パネルおよび画像表示装置
CN102033251B (zh) 防眩性硬涂薄膜、偏振片和图像显示装置、以及硬涂薄膜的制造方法
JP2011081219A (ja) 防眩性ハードコートフィルム、それを用いた偏光板および画像表示装置
JP6064406B2 (ja) 光学積層体、偏光板及び画像表示装置
TW201541113A (zh) 防眩膜、偏光板、液晶面板以及影像顯示裝置
JP6044118B2 (ja) 光学積層体、偏光板及び画像表示装置
JP7392664B2 (ja) 防眩フィルム、並びに、それを用いた偏光板、表面板及び画像表示装置
JP2011081217A (ja) 防眩性ハードコートフィルム、それを用いた偏光板および画像表示装置、ならびに防眩性ハードコートフィルムの製造方法
JP2013178534A (ja) 防眩性ハードコートフィルム、それを用いた偏光板および画像表示装置
JP7564375B2 (ja) 防眩フィルム、並びに、それを用いた偏光板、表面板、画像表示パネル及び画像表示装置
JP5976602B2 (ja) 防眩フィルム、偏光板、液晶パネル、および画像表示装置
US11945969B2 (en) Anti-glare film, polarizing plate and display device
WO2025023326A1 (ja) 防眩シート、シート物品、偏光板、表示装置、及び防眩物品
WO2025023327A1 (ja) 防眩シート、シート物品、偏光板、表示装置、及び防眩物品
CN118159879A (zh) 防眩膜、以及使用该防眩膜的偏振片、表面板、图像显示面板和图像显示装置
WO2025159080A1 (ja) 防眩シート、シート物品、偏光板、表示装置、パネル、防眩シートの選定方法、及び防眩シートの製造方法
JP2015057655A (ja) 防眩性ハードコートフィルム、それを用いた偏光板および画像表示装置、ならびに防眩性ハードコートフィルムの製造方法
US12487390B2 (en) Polarizer
WO2025182862A1 (ja) 光学シート、シート物品、偏光板、表示装置、パネル、光学シートの選定方法、及び光学シートの製造方法
WO2026058692A1 (ja) 防眩シート、シート物品、偏光板、表示装置、及びパネル
WO2024181533A1 (ja) 光学積層体、並びに、前記光学積層体を用いた偏光板、表面板、画像表示パネル及び画像表示装置
JP2013167890A (ja) 防眩性ハードコートフィルム、それを用いた偏光板および画像表示装置、ならびに防眩性ハードコートフィルムの製造方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 24845700

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2025535886

Country of ref document: JP

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 2025535886

Country of ref document: JP

ENP Entry into the national phase

Ref document number: 1020267004582

Country of ref document: KR

Free format text: ST27 STATUS EVENT CODE: A-0-1-A10-A15-NAP-PA0105 (AS PROVIDED BY THE NATIONAL OFFICE)

WWE Wipo information: entry into national phase

Ref document number: 202617022945

Country of ref document: IN

NENP Non-entry into the national phase

Ref country code: DE

WWP Wipo information: published in national office

Ref document number: 202617022945

Country of ref document: IN