WO2020009384A1 - Disque optique pour capteur de reconnaissance d'empreinte digitale et filtre optique le comprenant - Google Patents

Disque optique pour capteur de reconnaissance d'empreinte digitale et filtre optique le comprenant Download PDF

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Publication number
WO2020009384A1
WO2020009384A1 PCT/KR2019/007936 KR2019007936W WO2020009384A1 WO 2020009384 A1 WO2020009384 A1 WO 2020009384A1 KR 2019007936 W KR2019007936 W KR 2019007936W WO 2020009384 A1 WO2020009384 A1 WO 2020009384A1
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WO
WIPO (PCT)
Prior art keywords
wavelength
optical disc
light
transmittance
wavelength range
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2019/007936
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English (en)
Korean (ko)
Inventor
최정옥
김진환
안영수
양선호
박태광
나우주
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.)
LMS Co Ltd
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LMS 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
Priority claimed from KR1020190003914A external-priority patent/KR102158811B1/ko
Application filed by LMS Co Ltd filed Critical LMS Co Ltd
Priority to US17/257,419 priority Critical patent/US20210280621A1/en
Priority to CN201980043644.XA priority patent/CN112368612B/zh
Publication of WO2020009384A1 publication Critical patent/WO2020009384A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
    • H10F39/00—Integrated devices, or assemblies of multiple devices, comprising at least one element covered by group H10F30/00, e.g. radiation detectors comprising photodiode arrays
    • H10F39/10—Integrated devices
    • H10F39/12—Image sensors

Definitions

  • the present invention relates to an optical disc and an optical filter including the same, which can locate an area where a fingerprint is recognized in a screen of a display device.
  • capacitive fingerprint recognition took the most part.
  • the capacitive type has the advantage of good recognition rate and reliability as the condenser reacts to the fingerprint by the pressure of the bone of the fingerprint.
  • optical fingerprint recognition is limited to OLED, but can be positioned inside the display.
  • a visible light transmission filter that transmits only a wavelength band of a light source used as signal light is required.
  • An object of the present invention is to provide an optical disc and an optical filter comprising the same that can be located in the screen of the display device fingerprint recognition site.
  • a light absorbing layer comprising a resin binder and a light absorbing agent dispersed in the resin binder
  • an optical disc for a fingerprint sensor having an average transmittance of 15% or less for light in a wavelength range of 620 nm to 710 nm.
  • optical filter comprising a selective wavelength reflecting layer formed on one or both surfaces of the optical disc.
  • a fingerprint recognition module comprising the optical filter described above.
  • the optical disc according to the present invention includes a light absorbing layer that transmits light in a green region of visible light to increase fingerprint recognition rate, and effectively absorbs light in a red region. Can be suppressed.
  • FIG. 1 is a cross-sectional view showing a laminated structure of an optical disc according to an embodiment of the present invention.
  • FIG. 2 is a cross-sectional view illustrating a laminated structure of an optical filter according to an embodiment of the present invention.
  • 3 and 4 are cross-sectional views showing a laminated structure of the fingerprint recognition module according to an embodiment of the present invention.
  • the terms "comprises” or “having” are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.
  • the present invention relates to an optical disc for a fingerprint sensor.
  • capacitive fingerprint recognition took the most part.
  • the capacitive type has the advantage of good recognition rate and reliability as the condenser responds to the fingerprint by the pressure of the bone of the fingerprint.
  • optical fingerprint recognition can be positioned inside the display.
  • a visible light transmission filter that transmits only a wavelength band of a light source used as signal light is required.
  • the present invention provides an optical disc for a fingerprint sensor.
  • the optical disc for fingerprint recognition sensor includes a light absorbing layer that transmits light in the green region of visible light to increase the fingerprint recognition rate and effectively absorbs the light in the red region. Suppresses the appearance of color.
  • a light absorbing layer comprising a resin binder and a light absorbing agent dispersed in the resin binder
  • An optical disc for a fingerprint sensor having an average transmittance of 15% or less for light in a wavelength range of 620 to 710 nm is provided.
  • Optical disc for fingerprint recognition sensor a light transmissive substrate; And a light absorbing layer including a light absorbing agent, wherein the light absorbing layer has an absorption maximum in the visible light region (550 nm to 750 nm), and the cut-off of the optical disc is 580 nm to 620 nm showing a red color in a 620 nm to 700 nm region. It absorbs light.
  • the optical disc for fingerprint recognition sensor can reduce the phenomenon that the display looks red by absorbing a red region of the visible light to a certain range.
  • the optical disc has an average transmittance of 15% or less, 13% or less, 10% or less, or 7 to a wavelength in the wavelength range of 620 nm to 710 nm when the spectrophotometer measures the transmittance of the optical disc in the wavelength range of 300 nm to 1,200 nm. It may be expressed in% or less, and the average lower limit may be, for example, 1% or more or 3% or more. More specifically, the optical disc may have an average transmittance of 1% to 10% or 3% to 5% for light in a wavelength region of 620nm to 710nm.
  • optical disc for a fingerprint sensor according to the present invention may satisfy the following condition 1.
  • T 50% represents the wavelength value at the point where light transmittance is 50% in the wavelength range of 550 nm to 710 nm
  • T 10% represents the wavelength value at the point where the light transmittance is 10% in the wavelength range of 550 nm to 710 nm.
  • the optical disc has a wavelength value (T 50% ) at a point where light transmittance is 50% in the wavelength range of 550 nm to 710 nm and a wavelength value (T 10% ) at a point where light transmittance is 10% in a wavelength range of 550 nm to 710 nm.
  • the absolute value of the difference may be 50 nm or less, 40 nm or less, 30 nm or less, 25 nm or less, and the lower limit may be 10 nm or more or 15 nm or more.
  • the optical disc for fingerprint recognition sensor may have a light transmittance of 85% or more in the wavelength range of 430 nm to 560 nm when the spectrophotometer measures the transmittance of the optical disc in the wavelength range of 300 nm to 1,200 nm.
  • the light transmittance in the 430nm to 560nm wavelength region of the optical disc may be 85% or more, 88% or more, 90% or more, or 92% or more, the upper limit is 95% or less, 98% or less, 99% or less or 100%.
  • the light transmittance in the wavelength region of 430nm to 560nm of the optical disc may be 90% to 99% or 92% to 95%.
  • the optical disc 100 may have a structure in which the primer layer 120 and the light absorbing layer 110 are sequentially stacked on the light transmissive substrate 130. have.
  • the primer layer 120 may be omitted.
  • the light absorbing layer 110 is a structure in which a light absorbing dye that absorbs light in a red region of visible light is dispersed in a resin, and is also called a red absorbing layer.
  • the light transmissive substrate 130 may be replaced with a resin substrate.
  • the optical disc for fingerprint recognition sensor includes a light transmissive substrate, and the light transmissive substrate is not particularly limited as long as it is transparent and a plate-shaped substrate, but specifically, a transparent glass substrate, a transparent resin substrate, or the like may be used. Can be.
  • the transparent glass substrate as the light transmissive substrate
  • a commercially available transparent glass substrate can be used, and if necessary, a phosphate-based glass substrate containing copper oxide (CuO) can be used.
  • a transparent resin substrate any one having excellent strength can be used without particular limitation.
  • a light transmissive resin in which an inorganic filler is dispersed can be used, and a binder resin usable for the light absorbing layer can be used.
  • the transparent glass substrate may prevent thermal deformation and warpage according to an optical filter manufacturing process without inhibiting light transmittance of visible light
  • the transparent resin substrate may include a light absorbing layer when the binder resin of the light absorbing layer is used as a transparent resin substrate.
  • the degree of interfacial peeling can be improved by controlling the kind of the binder resin and the resin used as the light transmissive substrate in the same or similar manner.
  • the optical disc according to the present invention may include a light absorbing layer, and the light absorbing layer may be formed on one or both surfaces of the substrate, and may include a resin binder and a light absorbing agent dispersed in the resin binder.
  • the light absorbing layer has a spectrophotometer in the wavelength range of 300 nm to 1,200 nm, and the shortest wavelength ( ⁇ _cut-off) having a transmittance of 50% in a wavelength region longer than the 550 nm wavelength is measured in the range of 580 nm to 620 nm. exist. Specifically, the shortest wavelength ( ⁇ _cut-off) having a transmittance of 50% in the wavelength region longer than the 550 nm wavelength of the optical disc exists in the 590 nm to 610 nm wavelength region.
  • the light absorbing agent according to the present invention is a compound having a near infrared absorption maximum in the wavelength range of 650 nm to 700 nm, and absorbs light in the near infrared region incident to the optical filter to block light in the near infrared region from entering the image sensor. Do this.
  • the light absorbing agent is not particularly limited as long as the compound has a near infrared absorption maximum ( ⁇ max ) in the wavelength range of 640 nm to 700 nm. It may include any one or more of a phosphorus dye and a dye having an absorption maximum of 680 ⁇ 15 nm.
  • the dye may include SDA6698 (HW Sands, absorption peak 651 nm), SDA4451 (HW Sands, absorption peak 634 nm) and VIS680D (QCR Solutions, absorption peak 680 nm).
  • the light absorbing agent may be used alone, and in some cases, may be used in combination of three or more kinds or separated into two layers.
  • the content of the light absorbing agent may be selected without limitation within a range that does not affect the light absorption of the optical disc. Specifically, it is 0.01-10.0 weight part with respect to 100 weight part of binder resin contained in a light absorption layer; 0.01 to 8.0 parts by weight; Or 0.01 to 5.0 parts by weight.
  • the light absorbing layer according to the present invention may include a binder resin.
  • binder resin which concerns on this invention, a cyclic olefin resin, polyarylate resin, polysulfone resin, polyether sulfone resin, polyparaphenylene resin, polyarylene ether phosphine oxide resin, polyimide, for example Resins, polyetherimide resins, polyamideimide resins, acrylic resins, polycarbonate resins, polyethylene naphthalate resins, organic-inorganic hybrid series resins, and the like.
  • cyclic olefin polymer (cyclic olefin polymer, COP), cyclic olefin copolymer (cyclic olefin co-polymer, COC), polyimide resin (polyimide, PI) or a mixture thereof can be used.
  • the binder resin may further include an additive.
  • the additive may be used without particular limitation, as long as it can prevent modification of the light absorbing layer at a high temperature.
  • phenol phenol
  • Ti tin
  • optical filter comprising a selective wavelength reflecting layer formed on one or both surfaces of the optical disc.
  • the optical filter according to the present invention may include a selective wavelength reflecting layer formed on one or both surfaces of the optical disc.
  • the optical filter includes a selective wavelength reflecting layer formed on both sides of the optical disc, and when measuring the transmittance of the optical filter in the spectrophotometer in the wavelength range of 300nm to 1,200nm 50% transmittance in the wavelength region longer than 550nm wavelength
  • the shortest wavelength [lambda] _cut-off may be present in the 585 nm to 615 nm wavelength range.
  • the longest wavelength ( ⁇ _cut-off) with a transmittance of 50% in a wavelength region longer than 550 nm when the spectrophotometer measures the transmittance of the optical filter in the wavelength range of 300 nm to 1,200 nm may exist in the 655 nm to 615 nm wavelength region.
  • the optical filter according to the present invention when measuring the transmittance of the optical disc in the spectrophotometer in the wavelength range of 300nm to 1,200nm, the light transmittance in the wavelength range of 650nm to 1200nm may be 5% or less, 4% or less or 3% or less. And the average lower limit may be, for example, 0.5% or more or 1% or more.
  • the optical filter according to the present invention has a light transmittance of 90% or more, 93% or more, 95% or more or 97% in the wavelength range of 430 nm to 560 nm when the spectrophotometer measures the transmittance of the optical disc in the wavelength range of 300 nm to 1,200 nm.
  • the upper limit may be 99% or less or 100%.
  • optical filter according to the present invention may satisfy the following condition 1.
  • T 50% represents the wavelength value at the point where light transmittance is 50% in the wavelength range of 550 nm to 710 nm
  • T 10% represents the wavelength value at the point where the light transmittance is 10% in the wavelength range of 550 nm to 710 nm.
  • the optical filter has a wavelength value (T 50% ) at a point where light transmittance is 50% in the wavelength range of 550nm to 710nm and a wavelength value (T 10% ) at a point where light transmittance is 10% in the wavelength range of 550nm to 710nm.
  • the absolute value of the difference may be 50 nm or less, 40 nm or less, 30 nm or less, 25 nm or less, and the average lower limit may be 5 nm or more or 10 nm or more.
  • the optical filter 200 includes an optical disc having a structure in which a primer layer 220 and a flaw layer 230 are sequentially stacked on a light transmissive substrate 230, First and second selective wavelength reflecting layers 240 and 250 are formed on and under the optical disc, respectively.
  • the first and second selective wavelength reflecting layers 240 and 250 may have a structure in which TiO 2 and SiO 2 are alternately stacked.
  • the optical filter according to the present invention may include a selective wavelength reflecting layer on one or both surfaces of the optical disc.
  • the selective wavelength reflecting layer may serve to reflect light in the near infrared region, and may have a structure such as a dielectric multilayer film in which a high refractive index layer and a low refractive index layer are alternately stacked, but is not limited thereto.
  • the selective wavelength reflecting layer reflects light having a wavelength of 700 nm or more, specifically, a wavelength in the range of 700 nm to 1,100 nm, of light incident to the optical filter, thereby preventing the light in the range from entering the image sensor.
  • the selective wavelength reflecting layer may serve as an near-infrared reflecting layer (IR layer) reflecting near infrared rays and / or an anti-reflection layer (AR layer) for preventing visible light from being reflected. .
  • the selective wavelength reflecting layer may have a structure such as a dielectric multilayer film in which a high refractive index layer and a low refractive index layer are alternately stacked, an aluminum deposition film; Precious metal thin film;
  • the method may further include a resin film in which one or more fine particles of indium oxide and tin oxide are dispersed.
  • the selective wavelength reflecting layer may have a structure in which a dielectric multilayer film having a first refractive index and a dielectric multilayer film having a second refractive index are alternately stacked, and the dielectric multilayer film having the first refractive index and the dielectric multilayer film having a second refractive index Refractive index deviation is 0.2 or more; 0.3 or more; Or 0.2 to 1.0.
  • the high refractive index layer and the low refractive index layer of the selective wavelength reflecting layer is not particularly limited as long as the refractive index deviation of the high refractive index layer and the low refractive index layer is included in the above-described range, but specifically, the high refractive index layer is 2.1 to 2.5. It may include one or more selected from the group consisting of titanium oxide, aluminum oxide, zirconium oxide, tantalum pentoxide, niobium oxide, lanthanum oxide, yttrium oxide, zinc oxide, zinc sulfide and indium oxide having a refractive index of Indium oxide may further contain a small amount of titanium oxide, tin oxide, cerium oxide and the like.
  • the low refractive index layer may include at least one member selected from the group consisting of silicon dioxide, lanthanum fluoride, magnesium fluoride, and sodium hexafluoride (Cryolite, Na 3 AlF 6 ) having a refractive index of 1.4 to 1.6.
  • a fingerprint recognition module comprising the optical filter described above.
  • Fingerprint recognition module comprises the above-described optical filter; And a fingerprint recognition sensor on one surface of the optical filter.
  • the fingerprint sensor may be a camera type or an optical type.
  • the fingerprint recognition module of the present invention includes the above-described optical filter (filter for fingerprint recognition sensor); It may include a fingerprint sensor and a circuit board for the fingerprint sensor. More specifically, the fingerprint recognition module may have a structure in which an optical filter, a fingerprint recognition sensor, and a circuit board for a fingerprint recognition sensor are sequentially stacked.
  • the optical filter is a light transmissive substrate; And a light absorbing layer formed on one or both surfaces of the substrate and including a resin binder and a light absorbing agent dispersed in the resin binder.
  • the optical filter includes the optical disc described above; And a selective wavelength reflecting layer formed on one or both surfaces of the optical disc.
  • the optical filter may be a filter for a fingerprint sensor, and the fingerprint sensor including the optical filter may be located in an in display area of the display.
  • the fingerprint recognition module according to the present invention includes the optical filter as described above, thereby reducing the visibility of the red light to prevent the display screen from appearing red.
  • a display device including the fingerprint recognition module described above.
  • the display device may include a fingerprint recognition module in an in-display area of the display.
  • the location of the fingerprint module in the in-display area of the display means that the fingerprint module is present in the light emitting area of the display panel, but is located opposite to the light emitting surface of the display panel. do.
  • the present invention can provide an OLED display device as shown in FIG.
  • the OLED display device 300 may include a fingerprint recognition module 410 within the OLED display screen 400.
  • the OLED display device 300 includes an OLED display screen 400; And the fingerprint recognition module 410 described above under the OLED display screen 400.
  • the OLED display screen 400 has a structure in which the screen protective layer 310, the cover glass 320, and the OLED display panel 331 are sequentially stacked, and a fingerprint recognition module is disposed below the OLED display screen 400.
  • 410 may be located.
  • the fingerprint recognition module 410 has a structure in which an optical filter 340, a fingerprint recognition sensor 350, and a fingerprint recognition sensor circuit board 360 are sequentially stacked.
  • the optical filter 340 may be a filter for a fingerprint sensor.
  • the present invention can provide an LCD display device as shown in FIG.
  • the LCD display device 300 may include a fingerprint recognition module 410 in the area of the LCD display screen 400. More specifically, the LCD display device 300 includes an LCD display screen 400; And a fingerprint recognition module 410 under the LCD display screen 400.
  • the LCD display screen 400 may include a screen protective layer 310; LCD display panel 332; And a backlight unit 370 sequentially stacked, and includes a fingerprint recognition module 410 under the LCD display screen 400, wherein the fingerprint recognition module 410 is located at a portion where the backlight unit 370 is not applied. Can be located.
  • the fingerprint recognition module 410 may be located under the backlight unit 370. That is, the position of the fingerprint recognition module 410 is not limited to the position at which the backlight unit 370 is applied or not applied, and may be positioned differently according to the fingerprint recognition rate.
  • the fingerprint recognition module 410 has a structure including an optical filter 340, a fingerprint recognition sensor 350, and a circuit board 360 for a fingerprint recognition sensor.
  • Light absorbers A, light absorbers B, and light absorbers C having absorption maxima in the wavelength ranges of 645 ⁇ 5 nm, 670 ⁇ 5 nm, and 685 ⁇ 5 nm, respectively, were obtained commercially and mixed so as to be 0.5 to 5 parts by weight based on 100 parts by weight of the resin. .
  • polymethyl methacrylate (PMMA) resin was used as the resin, and methyl ethyl ketone (MEK) was used as the organic solvent.
  • PMMA polymethyl methacrylate
  • MEK methyl ethyl ketone
  • PMMA polymethyl methacrylate
  • MEK methyl ethyl ketone
  • Light absorbers C having an absorption maximum in each and the 685 ⁇ 5 nm wavelength range were obtained commercially and mixed so as to be 0.5 to 5 parts by weight based on 100 parts by weight of the resin.
  • PMMA polymethyl methacrylate
  • MEK methyl ethyl ketone
  • An optical filter was prepared by depositing a dielectric multilayer film in the same manner as in Example 2, except that the optical disc prepared in Comparative Example 1 was used as the optical disc.
  • An optical filter was prepared by depositing a dielectric multilayer film in the same manner as in Example 2, except that the optical disc prepared in Comparative Example 2 was used as the optical disc.
  • Example 2 Comparative Example 3, and Comparative Example 4, wherein the cut-off T 50% values of the optical discs were 590 nm, 630 nm, and 650 nm, respectively, was observed. Is shown in FIG. 7.
  • the optical disc manufactured in Example 1 has a point where light absorption is 50% in a wavelength range of 580 nm to 610 nm, and the wavelength difference between a point where light absorption is 50% and a point where 10% is 25 nm is 25 nm. It can be seen that it is within. Specifically, when the light transmittance is measured, it can be seen that the wavelength which becomes Cut-off T 50% is 590 nm. On the other hand, in the optical discs prepared in Comparative Example 1 and Comparative Example 2, it can be seen that when the light transmittance is measured, the wavelengths of Cut-off T 50% are 630 nm and 650 nm, respectively. Through this, the optical disc according to the present invention can control the wavelength region of the absorbed light by controlling the light absorbing agent included in the light absorbing layer, thereby absorbing the near infrared wavelength.
  • the optical filter manufactured in Example 2 exhibits light transmittance of 80% or more in the wavelength region of 400 nm to 580 nm, and absorbs light in the wavelength region of 580 nm or more.
  • the optical filter prepared in Comparative Example 3 shows a light transmittance of 80% or more in the wavelength region of 400nm to 630nm, it can be seen that the light in the wavelength region of 630nm or more absorb.
  • the optical filter prepared in Comparative Example 4 exhibits light transmittance of 80% or more in the wavelength region of 400 nm to 650 nm, and absorbs light in the wavelength region of 650 nm or more. Through this, it can be seen that the optical filter according to the present invention effectively absorbs light in the red region compared with other optical filters.
  • the optical disc Cut-off T 50% embodiments apply the value to 590nm Example 2 of the optical filter of Comparative Example 3, an optical filter and an optical disc of applying the Cut-off T 50% value of the optical disc to 630nm It can be experimentally confirmed that the red visibility reflected by the optical filter is significantly reduced compared to the optical filter of Comparative Example 5, wherein the cut-off T 50% value is applied at 650 nm.
  • the optical disc of the present invention includes a light absorbing agent absorbing a red region in the light absorbing layer, it can be seen that the red visibility of the optical filter including the optical disc is reduced.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Filters (AREA)

Abstract

La présente invention concerne un disque optique permettant de positionner une région de reconnaissance d'empreinte digitale sur un écran d'un dispositif d'affichage, et un filtre optique le comprenant. Le disque optique selon la présente invention comprend une couche d'absorption de lumière qui transmet la lumière dans une région verte de lumière visible pour augmenter un taux de reconnaissance d'empreinte digitale et absorbe efficacement la lumière dans une région rouge de façon à supprimer un phénomène selon lequel la région de reconnaissance d'empreinte digitale sur l'écran du dispositif d'affichage apparaît en rouge.
PCT/KR2019/007936 2018-07-03 2019-07-01 Disque optique pour capteur de reconnaissance d'empreinte digitale et filtre optique le comprenant Ceased WO2020009384A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US17/257,419 US20210280621A1 (en) 2018-07-03 2019-07-01 Optical disc for fingerprint recognition sensor and optical filter comprising same
CN201980043644.XA CN112368612B (zh) 2018-07-03 2019-07-01 指纹识别传感器用光学基板以及包括其的光学滤波器

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20180076965 2018-07-03
KR10-2018-0076965 2018-07-03
KR10-2019-0003914 2019-01-11
KR1020190003914A KR102158811B1 (ko) 2018-07-03 2019-01-11 지문인식센서용 광학원판 및 이를 포함하는 광학필터

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WO2020009384A1 true WO2020009384A1 (fr) 2020-01-09

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PCT/KR2019/007936 Ceased WO2020009384A1 (fr) 2018-07-03 2019-07-01 Disque optique pour capteur de reconnaissance d'empreinte digitale et filtre optique le comprenant

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112334909A (zh) * 2020-01-21 2021-02-05 深圳市汇顶科技股份有限公司 光学指纹检测装置、触摸屏和电子设备

Citations (5)

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Publication number Priority date Publication date Assignee Title
KR101453469B1 (ko) * 2014-02-12 2014-10-22 나우주 광학 필터 및 이를 포함하는 촬상 장치
KR20150028683A (ko) * 2013-09-06 2015-03-16 주식회사 엘엠에스 광학 필터 및 이를 포함하는 촬상 장치
WO2017127734A1 (fr) * 2016-01-21 2017-07-27 3M Innovative Properties Company Filtres de camouflage optiques
KR20170099756A (ko) * 2016-02-24 2017-09-01 주식회사 엘엠에스 광학물품 및 이를 포함하는 광학필터
KR20180019088A (ko) * 2015-09-25 2018-02-23 아사히 가라스 가부시키가이샤 광학 필터 및 촬상 장치

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150028683A (ko) * 2013-09-06 2015-03-16 주식회사 엘엠에스 광학 필터 및 이를 포함하는 촬상 장치
KR101453469B1 (ko) * 2014-02-12 2014-10-22 나우주 광학 필터 및 이를 포함하는 촬상 장치
KR20180019088A (ko) * 2015-09-25 2018-02-23 아사히 가라스 가부시키가이샤 광학 필터 및 촬상 장치
WO2017127734A1 (fr) * 2016-01-21 2017-07-27 3M Innovative Properties Company Filtres de camouflage optiques
KR20170099756A (ko) * 2016-02-24 2017-09-01 주식회사 엘엠에스 광학물품 및 이를 포함하는 광학필터

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112334909A (zh) * 2020-01-21 2021-02-05 深圳市汇顶科技股份有限公司 光学指纹检测装置、触摸屏和电子设备

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