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WO2020067243A1 - Dispositif d'affichage d'image à capteur d'authentification d'empreinte digitale - Google Patents

Dispositif d'affichage d'image à capteur d'authentification d'empreinte digitale Download PDF

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Publication number
WO2020067243A1
WO2020067243A1 PCT/JP2019/037763 JP2019037763W WO2020067243A1 WO 2020067243 A1 WO2020067243 A1 WO 2020067243A1 JP 2019037763 W JP2019037763 W JP 2019037763W WO 2020067243 A1 WO2020067243 A1 WO 2020067243A1
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WIPO (PCT)
Prior art keywords
film
image display
display device
fingerprint authentication
less
Prior art date
Application number
PCT/JP2019/037763
Other languages
English (en)
Japanese (ja)
Inventor
柴野　博史
Original Assignee
東洋紡株式会社
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 東洋紡株式会社 filed Critical 東洋紡株式会社
Priority to CN202210934475.2A priority Critical patent/CN115394189B/zh
Priority to CN201980061456.XA priority patent/CN112740304A/zh
Priority to KR1020217010426A priority patent/KR102344400B1/ko
Priority to JP2020549085A priority patent/JP6863530B2/ja
Priority to KR1020217042285A priority patent/KR102532989B1/ko
Publication of WO2020067243A1 publication Critical patent/WO2020067243A1/fr

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    • 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
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/10—Image acquisition
    • G06V10/12—Details of acquisition arrangements; Constructional details thereof
    • G06V10/14—Optical characteristics of the device performing the acquisition or on the illumination arrangements
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/13—Sensors therefor
    • 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

  • the present invention relates to an image display device having a fingerprint authentication sensor and having an alignment film on the viewing side.
  • a surface protection film has been bonded to an image display device for surface protection.
  • the surface protective film not only prevents the surface from being scratched but also has the purpose of preventing scattering when the image cell or the surface glass plate is broken, and an oriented film such as biaxially stretched polyester having excellent impact resistance has been used.
  • an oriented film such as biaxially stretched polyester having excellent impact resistance has been used.
  • a biaxially stretched polyester film has been used also as a film for preventing scattering of a member of a touch sensor or a member of glass.
  • a face authentication system or a fingerprint authentication system has been adopted in order to ensure high security (Patent Documents 1 and 2).
  • a mobile terminal in order to enlarge the screen under the restriction of the size of mobile, the entire body is used as a display screen, and an authentication system is provided in the screen (an image display area as viewed from the viewer side and behind it).
  • a sensor In particular, in an organic electroluminescence (organic EL) image display device, a fingerprint authentication sensor can be operated through a gap between pixels of an image display cell, and such a system has been widespread.
  • a polarizing plate is provided on the viewing side of a sensor for authentication.
  • an alignment film is provided on the viewing side of the polarizing plate.
  • the fingerprint authentication system sometimes did not operate (recognize) or malfunctioned (misrecognized value), particularly when a biaxially oriented polyester film was used as the oriented film.
  • an object of the present invention is to provide an image display device which has a fingerprint authentication system and further has an orientation film, and in which the fingerprint authentication system normally operates.
  • a typical present invention is as follows.
  • Item 1 An image display device having a polarizing plate on the viewing side of the fingerprint authentication sensor and having an alignment film on the viewing side of the polarizing plate, An image display device, wherein an angle between a main orientation direction of the alignment film and an extinction axis direction of a polarizer of the polarizing plate is 0 ° ⁇ 6 ° or less, or 90 ° ⁇ 6 ° or less. (In the above, “less than or equal to” means only the value following “ ⁇ ”.)
  • an image display device having a polarizing plate on the viewing side of a fingerprint authentication sensor it is possible to provide an image display device in which a fingerprint authentication system normally operates even when an alignment film is present on the viewing side of the polarizing plate. .
  • the fingerprint authentication sensor unit is installed outside the display screen (image display unit).
  • a fingerprint authentication sensor unit is installed in a display screen (image display unit). It is a sectional view of an example when a fingerprint authentication sensor part is installed in a display screen (image display part).
  • the present invention is an image display device having a polarizing plate on the viewing side of a fingerprint authentication sensor and an alignment film on the viewing side.
  • the fingerprint authentication sensor fingerprint authentication sensor unit
  • the fingerprint authentication sensor may be installed outside the display screen, or may be installed inside the display screen (in the image display area as viewed from the viewer side and behind it).
  • the outside of the display screen referred to here is the state of FIG. 1
  • the inside of the display screen is the state of FIG.
  • the type installed in the display screen is also called a screen-embedded type.
  • the outside of the fingerprint authentication sensor is installed at the back of the screen when viewed from the viewing side.
  • FIG. 3 the outside of the fingerprint authentication sensor is installed at the back of the screen when viewed from the viewing side.
  • an image display cell for example, an organic EL cell
  • a polarizing plate (a circular polarizing plate is preferable when the image display cell is an organic EL cell) is arranged on the viewing side of the image display cell.
  • an alignment film is disposed via an adhesive layer.
  • an image display device of a type in which a fingerprint authentication sensor is installed in a display screen is an object of the present invention.
  • An object of the present invention is an image display device in which a fingerprint authentication sensor is provided outside a display screen, in which a polarizing plate is provided so as to cover the fingerprint authentication sensor.
  • the image display device is preferably a smartphone, mobile PC, PDA, mobile phone, game machine, camera, electronic dictionary, or the like.
  • the image display cell used in the image display device of the present invention is not particularly limited, but a liquid crystal display cell and an organic EL (OLED) cell are preferable examples because they can be reduced in size and thickness.
  • the organic EL cell is a preferable example because a fingerprint authentication sensor can be operated through a gap between pixels of the cell.
  • the fingerprint authentication sensor includes an optical type, an ultrasonic type, a capacitance type, an electric field intensity measurement type, a pressure-sensitive type, and a heat-sensitive type, and is not particularly limited. Formula or ultrasonic formula is preferred, and optical formula is particularly preferred.
  • An optical fingerprint sensor is commercially available from Synaptics under the trade name “Clear ID”, for example.
  • an ultrasonic fingerprint recognition sensor is commercially available from Qualcomm Technologies under the trade name “Qualcomm Fingerprint Sensors”.
  • the image display device is in a state where the polarizing plate is provided on the viewing side of the fingerprint authentication sensor.
  • the polarizing plate generally includes a polarizer having a function of generating polarized light and a polarizer protective film for protecting the polarizer, but the polarizer protective film is laminated only on one surface of the polarizer. Or a polarizer only.
  • the polarizer include a thin film in which iodine and an organic dichroic dye are adsorbed on uniaxially oriented polyvinyl alcohol, and an alignment film including a liquid crystal compound and an organic dichroic dye. It can be used without.
  • the polarizer protective film is not particularly limited, but an unstretched or stretched film of cellulose type, polyester type, cyclic polyolefin type, acrylic type, polycarbonate type, etc. can be used.
  • the extinction axis of the polarizer and the main orientation direction of the stretched film are preferably parallel or perpendicular.
  • parallel or perpendicular means that the angle between the extinction axis of the polarizer and the main orientation direction of the stretched film does not need to be exactly 0 or 90 degrees
  • the allowable width is ⁇ 6 degrees, which is more preferable.
  • the allowable width is ⁇ 5 degrees
  • the more preferable allowable range is ⁇ 4 degrees
  • the particularly preferable allowable range is ⁇ 3 degrees
  • the most preferable allowable range is ⁇ 2 degrees.
  • the extinction axis of the polarizer of the polarizing plate may be parallel to the long side of the screen, perpendicular, or in a direction of 45 degrees. These directions are determined by the type and purpose of the image display cell, and are not particularly limited in the present invention. For example, in the case of an organic EL display cell, it is often arranged at 45 degrees.
  • a retardation layer may be provided between the polarizer and the image display cell.
  • the retardation layer may be a retardation film obtained by stretching a resin, or may be an alignment film of a liquid crystal compound in which a liquid crystal compound is applied and aligned.
  • a circularly polarizing plate provided with a ⁇ wavelength layer as a retardation layer is used in order to suppress reflection of metal wiring of the cell.
  • the retardation layer of the circularly polarizing plate is arranged on the organic EL cell side.
  • the image display device of the present invention has a polarizing plate on the viewing side of the fingerprint authentication sensor, and has an alignment film on the viewing side of the polarizing plate.
  • the alignment film is located on the surface of the image display device and prevents scratches on the image display surface, and prevents glass from scattering when glass members such as image display cells, touch sensors, and surface cover glass are broken by impact.
  • Surface protective film a transparent conductive film which is also used as an electrode of a touch sensor, is used as a shatterproof film etc. which is located inside the display device and which prevents the shattering of the laminated glass on the glass member. It is a preferred form to be used as a surface protection film.
  • the surface protective film be peeled and replaced when the film itself is damaged.
  • the surface protective film is bonded to the image display device with an optical substrate-less pressure-sensitive adhesive sheet.
  • any material such as polyester, polyamide, polypropylene, polycarbonate, polystyrene, acrylic resin, cyclic polyolefin, and cellulosic is used, but heat resistance, mechanical strength, dimensional stability, etc. From the characteristics, it is preferable to use polyester, especially polyethylene terephthalate.
  • the oriented film is oriented by stretching, and has improved mechanical strength.
  • the oriented film may be a uniaxially oriented film (uniaxially stretched film) or a biaxially oriented film (biaxially oriented film). From the viewpoint of excellent mechanical strength in all directions, a biaxially oriented film (biaxially stretched film) is preferable. On the other hand, a uniaxially stretched film is preferred from the viewpoint of excellent orientation uniformity.
  • the film in order to increase the mechanical strength in the direction perpendicular to the main orientation direction, the film is also weakly stretched in the direction perpendicular to the main stretching direction (the film thus obtained is hereinafter referred to as weakly biaxially stretched).
  • a film or a weakly biaxially oriented film) is also preferable.
  • This weak stretching may be performed after the main stretching, but is preferably performed before or simultaneously with the main stretching. Needless to say, the film may be completely uniaxially stretched.
  • the stretching is generally performed by a roll stretching using a continuous roll in a film flowing direction (longitudinal direction), and a stretching using a tenter for simultaneous stretching in a width direction (horizontal direction) and in a vertical and horizontal direction.
  • the main orientation direction main stretching direction
  • the main stretching direction may be the flow direction or the width direction.
  • (elastic modulus in the direction orthogonal to the main orientation direction) / (elastic modulus in the main orientation direction) is 0.5 or less, or (breaking strength in the direction orthogonal to the main orientation direction) / ( A film having a breaking strength in the main orientation direction of 0.5 or less can be said to be a uniaxially oriented film or a weakly biaxially oriented film. Stretching may be performed at an appropriate temperature, magnification, and speed according to each material. Further, biaxial stretching and weak biaxial stretching can be adjusted mainly by respective stretching ratios.
  • the refractive index of the slow axis is 1.68 or more, preferably 1.685 or more, and ⁇ Nxy is 0.095 or less, preferably 0.093 or less, it can be said that weak biaxial stretching is applied. .
  • ⁇ Nxy is preferably less than 0.06, more preferably less than 0.055.
  • ⁇ Nxy is preferably 0.01 or more, more preferably 0.015 or more, and particularly preferably 0.02 or more.
  • ⁇ Nxy is preferably 0.065 or more, more preferably 0.070 or more, still more preferably 0.75 or more, particularly Preferably it is 0.80 or more, most preferably 0.85 or more.
  • ⁇ Nxy is preferably 0.16 or less, more preferably 0.15 or less, particularly preferably 0.14 or less, and most preferably 0.13 or less. If the ratio exceeds the above range, it becomes too easy to be used, and the function when used as a surface protective film may not be maintained.
  • the method for producing the oriented film is not particularly limited.
  • a polyethylene terephthalate film is taken as an example of the oriented film, it can be produced by the following method.
  • the stretching is performed by a continuous roll in the longitudinal direction (the flow direction of the film) as the first-stage stretching, and then is performed in the width direction (the direction orthogonal to the film-flow direction) as the second-stage stretching.
  • both ends of the width of the film are gripped by clips and stretched in a tenter.
  • the first-stage stretching and the second-stage stretching method may be reversed.
  • the stretching ratio of the first stage is preferably 1.0 to 3.5 times, and particularly preferably 1.0 to 3.0 times.
  • the stretching ratio of the second stage is preferably 2.5 to 6.0 times, particularly preferably 3.0 to 5.5 times. In the case of uniaxial stretching only, it is preferable to employ the second stage stretching ratio as the stretching ratio.
  • the stretching temperature is preferably from 80 to 130 ° C, particularly preferably from 90 to 120 ° C.
  • both ends of the width of the unstretched film may be gripped by clips, and may be biaxially stretched simultaneously in the longitudinal and width directions. Subsequently, it is preferable to perform a heat treatment at preferably 100 to 250 ° C, more preferably 180 to 245 ° C.
  • the tenter stretching is performed in the width direction, the tenter may be stretched in an oblique direction with respect to the longitudinal direction.
  • the extinction axis (absorption axis) of the polarizer and the main alignment direction (direction parallel to the main alignment axis) of the alignment film are preferably parallel or perpendicular.
  • parallel or perpendicular means that the angle between the extinction axis of the polarizer and the main orientation direction of the alignment film does not need to be exactly 0 degrees or 90 degrees, and is 0 degrees ⁇ 6 degrees or less or 90 degrees.
  • ⁇ 6 ° or less preferably 0 ° ⁇ 5 ° or less or 90 ° ⁇ 5 ° or less, more preferably 0 ° ⁇ 4 ° or less or 90 ° ⁇ 4 ° or less, 0 ° ⁇ 3 ° or less or 90 ° Particularly preferably ⁇ 3 degrees or less, particularly preferably 0 degrees ⁇ 2 degrees or 90 degrees ⁇ 2 degrees.
  • the term “below” means that only the value following “ ⁇ ” is applied. Therefore, for example, “below 0 ° ⁇ 6 °” means that a range of 6 ° above and below 6 ° is allowed. Similarly, “90 ° ⁇ 6 ° or less” means that a range of 6 ° above and below 90 ° is allowed. When there are a plurality of oriented films, it is preferable that all the oriented films have the above relationship.
  • the optical fingerprint sensor irradiates light from the bottom toward the display device surface and reads the fingerprint with the reflected light, but if there is a polarizer above the sensor (viewing side), the polarizer Linearly polarized light travels through an alignment film with a phase difference at an angle deviated from the optical axis, so that it becomes elliptically polarized light. Even when this is reflected and passes through a polarizer again, the effect of the alignment film with a phase difference also occurs.
  • the main alignment direction is determined by measuring the slow axis and the fast axis with a molecular orientation meter (for example, MOA-6004 type molecular orientation meter manufactured by Oji Scientific Instruments), and the slow axis is defined as the main orientation axis.
  • a molecular orientation meter for example, MOA-6004 type molecular orientation meter manufactured by Oji Scientific Instruments
  • the fast axis is defined as the main orientation direction.
  • the thickness of the oriented film can be appropriately set according to each purpose, but is preferably 5 to 200 ⁇ m. More preferably, it is 10 to 150 ⁇ m, particularly preferably 20 to 100 ⁇ m. If it is less than 5 ⁇ m, not only may it be too thin to handle poorly, but also when used as a surface protective film or the like, it may not be possible to secure sufficient mechanical strength for the purpose. If it exceeds 200 ⁇ m, not only the rigidity becomes too high, the handleability may deteriorate, but also the display device may not be suitable for thinning.
  • the in-plane retardation of the oriented film is not particularly limited as long as it is at least such that a clear state can be observed as the orientation direction of the molecule, but it is preferably at least 1000 nm. ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇
  • smartphones and the like often operate outdoors with polarized sunglasses, and coloring and rainbow unevenness may occur when polarized sunglasses are worn when viewed from an oblique direction.
  • the in-plane retardation of the alignment film is preferably 3000 nm or more. It is more preferably at least 4500 nm, particularly preferably at least 6000 nm.
  • the in-plane retardation is preferably 30000 nm or less, more preferably 10000 nm or less, and still more preferably 9000 nm or less. Even if the in-plane retardation exceeds 30000 nm, a significant improvement in the rainbow unevenness improvement effect is unlikely to be expected, and furthermore, the thickness is required, and in order to reduce the thickness, it is necessary to significantly increase uniaxial orientation, and the Mechanical strength may decrease.
  • the oriented film may be subjected to surface processing according to each purpose.
  • a surface protective film a hard coat, an antireflection coat, a low reflection coat, an antistatic coat and the like can be used. Further, an easy adhesion coat may be provided.
  • the visible side of the surface protection film is smooth enough to recognize the fingerprint.
  • the surface roughness SRa of the surface on the viewing side is preferably 100 nm or less, more preferably 50 nm or less, and particularly preferably 30 nm or less.
  • the total light transmittance of the oriented film is preferably 80% or more, more preferably 85% or more, and particularly preferably 88% or more. Further, the haze of the oriented film is preferably 3% or less, more preferably 2.5% or less, and particularly preferably 2% or less.
  • ⁇ Nxy
  • the biaxial refractive index anisotropy ( ⁇ Nxy) was determined by the following method.
  • the slow axis direction of the film was determined using a molecular orientation meter (MOA-6004 type molecular orientation meter manufactured by Oji Scientific Instruments), and 4 cm was set so that the slow axis direction was parallel to the long side of the sample for measurement.
  • MOA-6004 type molecular orientation meter manufactured by Oji Scientific Instruments
  • a rectangle of 2 cm was cut out and used as a measurement sample.
  • a biaxial refractive index perpendicular to the optical axis (refractive index in the slow axis direction: nx, a refractive index in a direction orthogonal to the slow axis direction in the plane (that is, a refractive index in the fast axis direction): ny),
  • the refractive index in the thickness direction (nz) is determined by an Abbe refractometer (NAR-4T, manufactured by Atago, measurement wavelength: 589 nm), and the absolute value (
  • Rate anisotropy ( ⁇ Nxy).
  • the thickness d (nm) of the film was measured using an electric micrometer (Millitron 1245D, manufactured by Fineleuf Co.), and the unit was converted to nm.
  • the retardation (Re) was determined from the product ( ⁇ Nxy ⁇ d) of the anisotropy of the refractive index ( ⁇ Nxy) and the thickness d (nm) of the film.
  • Three-dimensional center plane average surface roughness (SRa): A film having an area of 50 mm ⁇ 50 mm is cut out, and a three-dimensional surface shape measuring device (manufactured by Ryoka Systems Inc., Micromap 550N (measurement conditions: wave mode, measurement wavelength 560 nm, objective lens 10 ⁇ )) is applied to the film surface. On the other hand, the measurement was performed in the vertical direction, a 400 ⁇ m ⁇ 400 ⁇ m CCD camera image capturing area was designated, and SRa given by the following equation was determined. On both sides of the film, the number of measurements was set to 16, and the average value was determined. In addition, fractions after the decimal point are rounded off.
  • S M Lx ⁇ Ly, Lx, Ly is the range in the x, y directions, and f (x, y) is the height of the measurement point (x, y) from the average plane.
  • Oriented film A A 75 ⁇ m thick film of Cosmoshine (registered trademark) A4300 manufactured by Toyobo Co., Ltd. was used. Since the main orientation direction differs depending on the slit position of the film roll, a portion where the main orientation direction is 90 ° ⁇ 6 ° or less with respect to the length direction of the film roll was cut out and used.
  • a coating agent for an easy-adhesion layer comprising a water-dispersible polyester resin and an aqueous dispersion of a blocked isocyanate-modified polyurethane was applied, and then led to a tenter-type simultaneous biaxial stretching machine to form a film.
  • a hot air zone at a temperature of 125 ° C., and stretched 1.8 times in the longitudinal direction and 4 times in the width direction.
  • the treatment was performed at a temperature of 225 ° C. for 10 seconds, and a 2.5% relaxation treatment was performed vertically and horizontally. Since the produced film roll showed some distortion of the orientation due to bowing at the end position, a portion where the main orientation direction was 90 ° ⁇ 6 ° or less with respect to the length direction of the film roll was cut out and used.
  • Oriented film C A 80 ⁇ m thick film of Cosmoshine (registered trademark) super birefringence type (SRF) manufactured by Toyobo Co., Ltd. was used. Since the main orientation direction was almost stable in the width direction of the film roll, it was arbitrarily selected, and it was confirmed that the main orientation direction was 90 ° ⁇ 6 ° or less with respect to the length direction of the film roll.
  • SRF Cosmoshine
  • a UV-curable hard coat agent is applied to the easy-adhesion coated surfaces of the alignment films A, B, and C, dried, and then irradiated with ultraviolet light from a high-pressure mercury lamp to form the alignment films A, B, and C having a hard coat layer on one surface. C was obtained. Further, a commercially available optical pressure-sensitive adhesive (substrate-less type) was peeled off the light release sheet and laminated on a roll-to-roll basis on the surface of each oriented film opposite to the surface on which the hard coat layer was laminated. Table 2 shows the measurement results of the three-dimensional center plane average surface roughness SRa on the hard coat layer side for each oriented film.
  • Example 16 Simulating the case where a transparent conductive film of a polyester film is used as a touch sensor, oriented films A and C each having a hard coat layer and an adhesive layer laminated thereon were laminated and bonded in the same manner as described above.
  • positive values indicate the clockwise direction of the main alignment axis with respect to the light transmission axis of the polarizer as viewed from the viewing side, and negative values indicate the counterclockwise direction.

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  • General Physics & Mathematics (AREA)
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  • General Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Optics & Photonics (AREA)
  • Multimedia (AREA)
  • Polarising Elements (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Electroluminescent Light Sources (AREA)
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Abstract

L'invention concerne, pour un dispositif d'affichage d'image comprenant une plaque de polarisation dans un côté visible d'un capteur d'authentification d'empreinte digitale, un dispositif d'affichage d'image dans lequel un système d'authentification d'empreinte digitale fonctionne normalement, même lorsqu'un film d'orientation est présent dans un côté visible d'une plaque de polarisation. Le dispositif d'affichage d'image comprenant la plaque de polarisation dans le côté visible du capteur d'authentification d'empreinte digitale et comprenant le film d'alignement dans le côté visible de la plaque de polarisation, présente un angle de 0 degré ± 6 ou inférieur, ou de 90 degrés ± 6 ou inférieur entre une direction d'orientation principale du film d'orientation et un axe d'extinction d'un polariseur de la plaque de polarisation (le terme "ou inférieur" se référant uniquement au nombre situé après "±").
PCT/JP2019/037763 2018-09-28 2019-09-26 Dispositif d'affichage d'image à capteur d'authentification d'empreinte digitale WO2020067243A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CN202210934475.2A CN115394189B (zh) 2018-09-28 2019-09-26 带指纹验证传感器的图像显示装置
CN201980061456.XA CN112740304A (zh) 2018-09-28 2019-09-26 带指纹验证传感器的图像显示装置
KR1020217010426A KR102344400B1 (ko) 2018-09-28 2019-09-26 지문 인증 센서 부착 화상 표시 장치
JP2020549085A JP6863530B2 (ja) 2018-09-28 2019-09-26 指紋認証センサー付き画像表示装置
KR1020217042285A KR102532989B1 (ko) 2018-09-28 2019-09-26 지문 인증 센서 부착 화상 표시 장치

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018184069 2018-09-28
JP2018-184069 2018-09-28

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WO2020067243A1 true WO2020067243A1 (fr) 2020-04-02

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KR102344400B1 (ko) 2021-12-28
CN115394189B (zh) 2024-06-21
JP7405107B2 (ja) 2023-12-26
CN115394189A (zh) 2022-11-25
KR20210046071A (ko) 2021-04-27
CN112740304A (zh) 2021-04-30
JPWO2020067243A1 (ja) 2021-02-15
KR20220002705A (ko) 2022-01-06

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