CN110866521A - Optical sensor module and image display device - Google Patents
Optical sensor module and image display device Download PDFInfo
- Publication number
- CN110866521A CN110866521A CN201910790517.8A CN201910790517A CN110866521A CN 110866521 A CN110866521 A CN 110866521A CN 201910790517 A CN201910790517 A CN 201910790517A CN 110866521 A CN110866521 A CN 110866521A
- Authority
- CN
- China
- Prior art keywords
- polarizing plate
- optical sensor
- window
- sensor module
- self
- 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.)
- Withdrawn
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 63
- 230000001681 protective effect Effects 0.000 claims abstract description 41
- 238000010521 absorption reaction Methods 0.000 claims abstract description 16
- 230000001678 irradiating effect Effects 0.000 claims abstract 2
- 239000010410 layer Substances 0.000 claims description 61
- -1 polyethylene terephthalate Polymers 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 12
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 12
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 12
- 239000000758 substrate Substances 0.000 claims description 9
- 239000012790 adhesive layer Substances 0.000 claims description 6
- 238000005538 encapsulation Methods 0.000 claims description 2
- 238000002310 reflectometry Methods 0.000 claims 1
- 239000010408 film Substances 0.000 description 75
- 229920005989 resin Polymers 0.000 description 22
- 239000011347 resin Substances 0.000 description 22
- 239000011521 glass Substances 0.000 description 11
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 10
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 8
- 239000000853 adhesive Substances 0.000 description 8
- 230000001070 adhesive effect Effects 0.000 description 8
- 230000008901 benefit Effects 0.000 description 8
- 239000004372 Polyvinyl alcohol Substances 0.000 description 7
- 238000005259 measurement Methods 0.000 description 7
- 229920002451 polyvinyl alcohol Polymers 0.000 description 7
- 150000001875 compounds Chemical class 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 239000004642 Polyimide Substances 0.000 description 5
- 239000004734 Polyphenylene sulfide Substances 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 229920001721 polyimide Polymers 0.000 description 5
- 229920000069 polyphenylene sulfide Polymers 0.000 description 5
- 229920008347 Cellulose acetate propionate Polymers 0.000 description 4
- 229920002284 Cellulose triacetate Polymers 0.000 description 4
- 239000004697 Polyetherimide Substances 0.000 description 4
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000010030 laminating Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 229920000058 polyacrylate Polymers 0.000 description 4
- 229920001230 polyarylate Polymers 0.000 description 4
- 229920001601 polyetherimide Polymers 0.000 description 4
- 229920006254 polymer film Polymers 0.000 description 4
- ILJSQTXMGCGYMG-UHFFFAOYSA-N triacetic acid Chemical compound CC(=O)CC(=O)CC(O)=O ILJSQTXMGCGYMG-UHFFFAOYSA-N 0.000 description 4
- 229920002799 BoPET Polymers 0.000 description 3
- 239000004417 polycarbonate Substances 0.000 description 3
- 229920000515 polycarbonate Polymers 0.000 description 3
- 239000011112 polyethylene naphthalate Substances 0.000 description 3
- 229920000178 Acrylic resin Polymers 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- 241001385002 Minota Species 0.000 description 2
- 229920012266 Poly(ether sulfone) PES Polymers 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 2
- 239000004327 boric acid Substances 0.000 description 2
- HKQOBOMRSSHSTC-UHFFFAOYSA-N cellulose acetate Chemical compound OC1C(O)C(O)C(CO)OC1OC1C(CO)OC(O)C(O)C1O.CC(=O)OCC1OC(OC(C)=O)C(OC(C)=O)C(OC(C)=O)C1OC1C(OC(C)=O)C(OC(C)=O)C(OC(C)=O)C(COC(C)=O)O1.CCC(=O)OCC1OC(OC(=O)CC)C(OC(=O)CC)C(OC(=O)CC)C1OC1C(OC(=O)CC)C(OC(=O)CC)C(OC(=O)CC)C(COC(=O)CC)O1 HKQOBOMRSSHSTC-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 239000003431 cross linking reagent Substances 0.000 description 2
- 230000001747 exhibiting effect Effects 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 238000012634 optical imaging Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 1
- CBECDWUDYQOTSW-UHFFFAOYSA-N 2-ethylbut-3-enal Chemical compound CCC(C=C)C=O CBECDWUDYQOTSW-UHFFFAOYSA-N 0.000 description 1
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical compound OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229930040373 Paraformaldehyde Natural products 0.000 description 1
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 239000004695 Polyether sulfone Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 235000010724 Wisteria floribunda Nutrition 0.000 description 1
- 229920001893 acrylonitrile styrene Polymers 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 239000012461 cellulose resin Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 229920005994 diacetyl cellulose Polymers 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 150000003949 imides Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- JTHNLKXLWOXOQK-UHFFFAOYSA-N n-propyl vinyl ketone Natural products CCCC(=O)C=C JTHNLKXLWOXOQK-UHFFFAOYSA-N 0.000 description 1
- 125000003518 norbornenyl group Chemical group C12(C=CC(CC1)C2)* 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 229920001483 poly(ethyl methacrylate) polymer Polymers 0.000 description 1
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 229920006393 polyether sulfone Polymers 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000003505 polymerization initiator Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- SCUZVMOVTVSBLE-UHFFFAOYSA-N prop-2-enenitrile;styrene Chemical compound C=CC#N.C=CC1=CC=CC=C1 SCUZVMOVTVSBLE-UHFFFAOYSA-N 0.000 description 1
- 238000010526 radical polymerization reaction Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 150000003457 sulfones Chemical class 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Classifications
-
- 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
- G06V10/147—Details of sensors, e.g. sensor lenses
-
- 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
- G06V10/145—Illumination specially adapted for pattern recognition, e.g. using gratings
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Theoretical Computer Science (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Polarising Elements (AREA)
Abstract
The invention provides an optical sensor module and an image display device, the optical sensor module is characterized by comprising a self-luminous panel for irradiating light; a polarizing plate on one side of the self-light emitting panel; a window on one side of the polarizing plate; a window protective film on at least one side of the window; the fingerprint sensor is located on the other surface of the self-luminous panel where the polarizing plate is located, senses light irradiated from the self-luminous panel and reflected by a fingerprint, and can improve the fingerprint recognition rate without separately adjusting the included angle under the condition of using additional means such as a) adjusting the included angle between the absorption axis of the polarizing plate and the retardation axis of the window protective film to-15 DEG to 15 DEG or 75 DEG to 105 DEG to improve the normal reflectance, or b) further including a lambda/4 phase difference layer between the polarizing plate and the window protective film to maintain the included angle between the absorption axis of the polarizing plate and the retardation axis of the window protective film at a constant level regardless of the normal reflectance to increase the light irradiation amount of the self-luminous panel.
Description
Technical Field
The present invention relates to an optical sensor module comprising means for improving the fingerprint recognition rate of an optical fingerprint sensor.
Background
In recent years, a wide variety of sensors have been presented in electronic devices or systems to provide predetermined desired functions. In such a process, the necessity of secure access by means of identifying only users who have authority and distinguishing users who do not have authority is increasing.
For example, as mobile phones, digital cameras, tablet computers, notebook computers, and other portable electronic devices have become popular for personal, business, and government use, there has been an increasing need to install one or more security mechanisms that allow a user to access only personal information in a personal portable electronic device, and allow an authorized employee to access only an electronic device such as a company or business computer, thereby enabling use or protection of information in an organization, business device, or system.
As a security mechanism, various methods such as user password use can be used for secure access to a portable electronic device such as a mobile device. However, the password is easily leaked or stolen, the security level may be lowered due to such password characteristics, and there is inconvenience to the user as follows: in order to use a password-protected electronic device or system, it is necessary to memorize the password, and when the password is forgotten, the user needs to obtain authentication by performing a specific password recovery procedure, or else, to regain access rights to the device. In a wide variety of situations, such password recovery procedures may burden the user with various practical limitations and inconveniences.
In order to minimize such inconvenience of users, in recent years, fingerprint sensors have been developed and used, and such fingerprint sensors are largely classified into a capacitive type and an optical type. The capacitive fingerprint sensor senses static electricity based on a fingerprint of a human body using a semiconductor material sensitive to voltage and current to recognize the fingerprint, and the optical fingerprint sensor is configured to include a light source and an optical sensor to sense light emitted from the light source and recognize the fingerprint of a user. Since the optical fingerprint sensor is excellent in durability compared to the capacitive type, there is a trend that the demand for the optical fingerprint sensor is increasing.
In connection with this, korean laid-open patent No. 10-2017-0106425 discloses an electronic device capable of detecting a fingerprint by light sensing, comprising: a device screen providing a touch-sensitive action and including a display panel structure having light-emitting display pixels capable of performing respective actions so as to emit light forming a part of a display image; an upper transparent layer formed on the device screen as an interface for being touched by a user for the touch sensing operation and for transmitting light from the display panel structure to display an image to the user; and an optical sensor module located below the display panel structure so as to receive light emitted by at least a part of the light-emitting display pixels of the display panel structure and returned from the upper transparent layer in order to detect a fingerprint, but when a user further attaches a window protective film in order to protect the window, there is a problem in that a fingerprint recognition rate is lowered.
Documents of the prior art
Patent document
Patent document 1: korean laid-open patent No. 10-2017-0106425 (2017.09.20.)
Disclosure of Invention
Problems to be solved
In order to solve the above-described problems, it is an object of the present invention to provide an optical sensor module including a means for improving a fingerprint recognition rate.
Means for solving the problems
An optical sensor module of the present invention for achieving the above object is characterized by including a self-luminous panel that irradiates light; a polarizing plate on one side of the self-luminous panel; a window on one side of the polarizing plate; a window protective film on at least one side of the window; a fingerprint sensor part which is positioned on the other surface of the self-luminous panel where the polarizing plate is positioned and senses light which is irradiated by the self-luminous panel and reflected by a fingerprint of a user, wherein the fingerprint sensor part comprises a) a fingerprint recognition rate improving means in which an included angle between an absorption axis of the polarizing plate and a retardation axis of the window protective film is-15 DEG to 15 DEG or 75 DEG to 105 DEG, or b) a fingerprint recognition rate improving means in which a lambda/4 phase difference layer is further included between the polarizing plate and the window protective film.
The image display device of the present invention includes the optical sensor module.
Effects of the invention
The optical sensor module including the fingerprint sensor recognition rate improving means of the present invention has an advantage of improving the fingerprint recognition rate.
The image display device of the present invention has the same advantages as those described above by including the optical sensor module described above.
Drawings
Fig. 1 is a diagram schematically showing the structure of an optical sensor module according to the present invention.
FIG. 2 is a view schematically showing an angle between an absorption axis of the polarizing plate and a retardation axis of the window protective film in the present invention.
FIG. 3 is a graph showing the change in normal reflectance with angle.
Fig. 4 is a graph showing the change of the regular reflectance with the angle in the present invention, which is directed to an optical sensor module further including a λ/4 phase difference layer.
Fig. 5 is a view schematically showing the structure of the self-luminous panel of the present invention.
Description of the symbols
000 optical sensor Module 200 polarizing plate
100 self-luminous panel 201 absorbing axis
101 panel substrate 300 window
102 pixel electrode 400 window protective film
103 pixel defining film 401 slow axis
104 display layer 500 fingerprint sensing part
105 counter electrode 600 lambda/4 phase difference layer
106 envelope layer theta angle
Detailed Description
In the present invention, when it is stated that a certain member is "on" another member, it includes not only a case where the certain member is in direct contact with the other member but also a case where another member exists between the two members.
In the present invention, when a part is referred to as "including" a certain component, it means that other components may be included without excluding other components unless otherwise stated.
The present invention will be described in further detail below.
Referring to fig. 1 and 2, an optical sensor module 000 according to an embodiment of the present invention includes a self-light emitting panel 100 for emitting light; a polarizing plate 200 on one side of the self-light emitting panel 100; a window 300 on one side of the polarizing plate 200; a window protective film 400 on at least one side of the window 300; the fingerprint sensing device includes a fingerprint sensing part 500 which is located on the other surface of the self-luminous panel 100 where the polarizing plate 200 is located and senses light irradiated from the self-luminous panel 100 and reflected by a fingerprint of a user, and a) fingerprint recognition rate improving means in which an angle θ between an absorption axis 201 of the polarizing plate 200 and a slow axis 401 of the window protective film 400 is-15 ° to 15 ° or 75 ° to 105 °, or b) fingerprint recognition rate improving means in which a λ/4 retardation layer 600 is further included between the polarizing plate 200 and the window protective film 400, thereby improving a regular reflectance when light emitted from the self-luminous panel 100 is reflected by a fingerprint and improving a fingerprint recognition rate.
As described in more detail with reference to fig. 2 and 3, the following advantages are obtained by adjusting the angle θ between the absorption axis 201 of the polarizing plate 200 and the slow axis 401 of the window protective film 400 to-15 ° to 15 ° or 75 ° to 105 ° as in the above means a): the light emitted from the self-luminous panel 100 is reflected by the fingerprint with a regular reflection rate of 33% or more, and easily reaches the fingerprint sensor 500, thereby improving the fingerprint recognition rate.
As described with reference to fig. 1 and 4, the λ/4 retardation layer 600 is further included between the polarizing plate 200 and the window protective film 400 as in the means b) described above, thereby providing the following advantages: the normal reflectance when reflected by a fingerprint can be maintained at a constant level, for example, at a level of 23 to 27%, regardless of the angle between the polarizing plate 200 and the window protective film 400, and in this case, for example, by an additional method such as increasing the amount of light of the self-light emitting panel 100 included at the same time, the normal reflectance as a whole can be increased regardless of the angle, and the fingerprint recognition rate can be improved.
< optical sensor Module 000>
The optical sensor module 000 according to an embodiment of the present invention includes the fingerprint sensor recognition rate improving means as described above, thereby providing an advantage of improving the fingerprint recognition rate.
Referring to fig. 1, the optical sensor module 000 according to the present invention may be configured such that, for example, a fingerprint sensor unit 500, a self-light emitting panel 100, a polarizing plate 200, a window 300, and a window protective film 400 are arranged in this order from the bottom surface, but is not limited thereto, and the window protective film 400 may be included between the polarizing plate 200 and the window 300 as needed. In addition, according to the needs of the developer, other configurations may be further included without limitation within a range not impairing the object of the optical sensor module 000.
Self-luminous panel 100
An optical sensor module 000 according to an embodiment of the present invention includes a self-light emitting panel 100.
Referring to fig. 5, the self-light emitting panel 100 may include a pixel electrode 102, a pixel defining film 103, a display layer 104, a counter electrode 105 and an encapsulating layer 106 disposed on a panel substrate 101.
The panel substrate 101 may be made of a soluble resin material such as glass or polyimide. A pixel circuit including a thin film transistor is formed on the panel substrate 101, and an insulating film covering the pixel circuit may be formed. The pixel electrode 102 may be electrically connected to, for example, a drain electrode of a TFT on the insulating film.
The pixel defining film 103 may be formed on the insulating film to define a pixel region by exposing the pixel electrode 102. The pixel electrode 102 has a display layer 104 formed thereon, and the display layer 104 may include, for example, an organic light-emitting layer.
A counter electrode 105 may be disposed on the pixel defining film 103 and the display layer 104. The counter electrode 105 may be provided as a common electrode or a cathode of the image display device, for example. An encapsulation layer 106 for protecting the display panel may be stacked on the counter electrode 105.
An optical sensor module 000 according to an embodiment of the present invention includes a polarizing plate 200.
The polarizing plate 200 may include a substrate, a polarizing layer, a circularly polarizing retardation layer, and an adhesive layer.
The base material may function as a support for supporting and protecting the polarizing layer, and examples thereof include polyether sulfone (PES), Polyacrylate (PAR), Polyetherimide (PEI), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polyarylate (polyarylate), polyimide (polyimide), Polycarbonate (PC), cellulose Triacetate (TAC), and Cellulose Acetate Propionate (CAP), and cellulose triacetate may be preferably included in terms of improvement of durability.
The polarizing layer is an element for converting natural light into linearly polarized light, and can be generally produced through a step of uniaxially stretching a polyvinyl alcohol resin film, a step of dyeing the polyvinyl alcohol resin film with a dichroic dye to allow the polyvinyl alcohol resin film to adsorb the dichroic dye, a step of treating the polyvinyl alcohol resin film adsorbed with the dichroic dye with an aqueous boric acid solution, and a step of washing the polyvinyl alcohol resin film with water after treatment with the aqueous boric acid solution, or can be produced by applying a dye having absorption anisotropy, and can be used after bonding a transparent protective film on at least one side via an adhesive layer, but is not limited thereto.
Specific examples of the circularly polarizing retardation layer include a λ/4 retardation layer and a λ/2 retardation layer.
The λ/4 retardation layer may be an optically anisotropic support having a target λ/4 function as a support, or may be a form in which a separate optically anisotropic layer is laminated on a support made of a polymer film. The material constituting the optically anisotropic layer is not particularly limited in the present invention, but may be a layer formed from a composition containing a liquid crystalline compound and exhibiting optical anisotropy due to molecular orientation of the liquid crystalline compound, a layer having optical anisotropy by stretching a polymer film to orient polymers in the film, or a layer having both of them. That is, the film may be formed by 1 sheet or 2 or more sheets of biaxial film, or may be formed by combining 2 or more sheets of uniaxial film, or may be formed by combining 1 or more sheets of biaxial film and 1 or more sheets of uniaxial film.
Here, the λ/4 retardation layer is an optically anisotropic layer in which the in-plane retardation Re (λ) at a specific wavelength λ nm satisfies [ Re (λ) ═ λ/4 ]. The above formula may be satisfied at a certain wavelength (for example, 550nm) in the visible light region.
In the present invention, Re (λ) means an in-plane retardation at a wavelength λ. The Re (λ) is measured by causing light having a wavelength of λ nm to enter in the film line direction by KOBRA 21ADH or WR (manufactured by prince measuring machine). When the measurement wavelength λ nm is selected, the measurement can be performed by manually replacing the wavelength selective filter or changing the measurement value by a program or the like.
The λ/2 retardation layer may be an optically anisotropic support having a target λ/4 function as a support, or may be a form in which a separate optically anisotropic layer is laminated on a support made of a polymer film. The material constituting the optically anisotropic layer is not particularly limited in the present invention, but may be a layer formed from a composition containing a liquid crystalline compound and exhibiting optical anisotropy due to molecular orientation of the liquid crystalline compound, a layer having optical anisotropy by stretching a polymer film to orient polymers in the film, or a layer having both of them. That is, the film may be formed by 1 sheet or 2 or more sheets of biaxial film, or may be formed by combining 2 or more sheets of uniaxial film, or may be formed by combining 1 or more sheets of biaxial film and 1 or more sheets of uniaxial film.
The λ/2 retardation layer is an optically anisotropic layer in which the in-plane retardation Re (λ) at a specific wavelength λ nm satisfies [ Re (λ) ═ λ/4 ]. The above formula may be satisfied at a certain wavelength (for example, 550nm) in the visible light region.
The adhesive layer may be used for adhesion between the constituent layers of the polarizing plate 200, and in this case, the constituent component of the adhesive layer is not limited to an adhesive, and an adhesive may be used.
The pressure-sensitive adhesive may be an acrylic pressure-sensitive adhesive comprising an acrylic resin having a glass transition temperature (Tg) of 0 ℃ or lower and a crosslinking agent, which is obtained by radical polymerization of an acrylic monomer mixture containing a (meth) acrylic monomer having a functional group and a (meth) acrylic ester as a main component in the presence of a polymerization initiator.
Examples of the adhesive include an aqueous adhesive in which an adhesive component is dissolved or dispersed in water, and a composition which is cured by irradiation with an active energy ray (hereinafter, also referred to as an active energy ray-curable adhesive).
The aqueous adhesive contains a polyvinyl alcohol resin or a urethane resin as a main component, and may contain a composition containing a crosslinking agent such as an isocyanate compound or an epoxy compound, or a curable compound, for the purpose of improving adhesiveness.
The adhesive layer is not limited to the above, and may be in the form of a film containing an adhesive or a bonding agent. Further, the PSA (pressure sensitive adhesive) layer may be specifically used for performing an adhering operation in response to a pressure applied from the outside, but is not limited thereto.
The optical sensor module 000 according to an embodiment of the present invention includes a window 300.
The window 300 may be generally located on the surface of the optical sensor module 000, and may be further included between layers constituting the optical sensor module 000 as needed.
The window 300 may include a material having durability against external impact and transparency visible to a user, which is applied to an LCD device, an OLED device, a Touch Screen Panel (TSP), and the like, for example. Examples of the window 300 include, but are not limited to, glass, Polyimide (PI), Polyethersulfone (PES), Polyacrylate (PAR), Polyetherimide (PEI), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polyarylate (polyarylate), Polycarbonate (PC), cellulose Triacetate (TAC), and Cellulose Acetate Propionate (CAP), and these may be used alone or in combination of two or more.
Among them, glass can be preferably used.
The window 300 may include a hard coat film, for example, and a light shielding pattern may be formed on a peripheral portion of one surface of the window substrate. The light blocking pattern may include, for example, a color printing pattern, and may have a single layer or a multi-layer structure. With the light shielding pattern, a light shielding portion or a non-display area of an image display device including the same can be defined.
Window protective film 400
The optical sensor module 000 of the present invention includes a window protective film 400.
The window protective film 400 may be optionally disposed on the upper or lower portion of the window 300 as needed, may be disposed at the time of manufacturing the optical sensor module 000 as needed by a manufacturer, or may be additionally laminated on the surface portion of the window 300 as needed by a user.
Specifically, the window protective film 400 may be laminated on the upper portion of the window 300, that is, the outermost layer portion of the image display device, according to the user's needs, and in this case, may serve to protect the window 300 from external impact.
In addition, the window protection film 400 may be laminated on the lower portion of the window 300, that is, the surface between the polarizing plate 200 and the window 300 according to the needs of the designer, and in this case, even if the user uses a tool such as a polarized sunglass according to the needs, the protection film 400 may eliminate the polarized light of the sunglass to clearly see the screen.
In this case, the window protection film 400 may be selected in consideration of transparency, mechanical strength, thermal stability, water-blocking property, isotropy, and the like, and may include, for example, a film made of a polyester-based resin such as polyethylene terephthalate, polyethylene isophthalate, polyethylene naphthalate, and polybutylene terephthalate; cellulose resins such as diacetylcellulose and triacetylcellulose; a polycarbonate-based resin; acrylic resins such as polymethyl (meth) acrylate and polyethyl (meth) acrylate; styrene resins such as polystyrene and acrylonitrile-styrene copolymer; polyolefin resins such as polyethylene, polypropylene, polyolefins having a cyclic or norbornene structure, and ethylene-propylene copolymers; a vinyl chloride-based resin; amide resins such as nylon and aromatic polyamide; an imide-based resin; a polyether sulfone-based resin; a sulfone-based resin; a polyether ether ketone resin; polyphenylene sulfide-based resin; a vinyl alcohol resin; a vinylidene chloride resin; a vinyl butyral resin; an allyl compound-based resin; a polyoxymethylene resin; a film made of a blend of the above thermoplastic resins may be used, for example, a film made of a thermoplastic resin such as an epoxy resin. In addition, a film made of a thermosetting resin such as (meth) acrylic, urethane, acrylic urethane, epoxy, silicone, or an ultraviolet curable resin may be used. From the viewpoint of economy and easy availability, polyethylene terephthalate is preferably used.
Referring to fig. 2, in the case where the window protective film 400 having the slow axis 401 such as polyethylene terephthalate is disposed on one surface of the window 300, the regular reflectance of light reflected by a fingerprint changes according to the angle θ between the absorption axis 201 of the polarizing plate 200 and the slow axis 401, and thus the fingerprint recognition rate can be changed.
Therefore, the fingerprint sensor recognition rate improving means according to an aspect of the present invention has an advantage that the regular reflectance of light reflected by a fingerprint can be improved by adjusting the angle θ between the absorption axis 201 of the polarizing plate 200 and the slow axis 401 of the window protective film 400 to-15 ° to 15 ° or 75 ° to 105 °, thereby further improving the fingerprint recognition rate of the fingerprint sensor.
According to an embodiment of the present invention, the positive reflectance improved by the method as in the means a) may be 33% or more, and in this case, there is an advantage that the fingerprint recognition rate of the fingerprint sensor is good.
Further, according to an aspect of the present invention for improving the recognition rate of the fingerprint sensor, b) the λ/4 retardation layer 600 is further included between the polarizing plate 200 and the window protective film 400, so that the regular reflectance of the light reflected by the fingerprint can be maintained at a constant level regardless of the angle θ between the absorption axis 201 of the polarizing plate 200 and the slow axis 401 of the window protective film 400 (see fig. 2 and 4).
In this case, the specific contents of the λ/4 retardation layer 600 included in the polarizing plate 200 may be similarly applied to the contents of the λ/4 retardation layer included in the polarizing plate, and the λ/4 retardation layer 600 included in the polarizing plate may be the same as or different from the λ/4 retardation layer included in the polarizing plate (see (c) and (d) of fig. 1).
According to an embodiment of the present invention, the regular reflectance according to the means b) is characterized by 23 to 27%, and thus the regular reflectance is advantageous in that the regular reflectance is maintained at a constant level regardless of the angle θ between the absorption axis of the polarizing plate and the slow axis 401 of the window protection film 400: by simultaneously adjusting the peripheral conditions such as an increase in the amount of light irradiation of the self-luminous panel 100 included in the optical sensor module 000, the fingerprint recognition rate can be further improved regardless of the type of the window protective film 400 to be laminated (see fig. 2 and 4).
The optical sensor module 000 according to an embodiment of the present invention includes a fingerprint sensor section 500.
The fingerprint sensor 500 is located on the other surface of the self-light emitting panel 100 where the polarizer 200 is located, and functions to sense reflected light emitted from the self-light emitting panel 100 and reflected by a user's fingerprint contacting the surface of the window protection film 400 or the window 300 (see fig. 1).
In the present invention, the specific configuration and method of the fingerprint sensor section 500 for sensing the reflected light are not particularly limited, and the configuration may be variously applied and changed according to the sensing method.
For example, the fingerprint sensor section 500 may include a transmissive block that is in contact with the self-light emitting panel 100 and receives light emitted from the self-light emitting panel 100 and returned from the upper window 300, and an optical sensor array that images received light in the transmissive block on the optical sensor array. Such an optical sensor array may be arranged according to a fingerprint sensing area locatable at the window, and may be constructed in the following manner: when not in contact with the skin of the person, return light from the specified light source is not received, and when in contact with the skin of the person, the return light is selectively received by total internal reflection at the surface of the upper window.
The fingerprint sensor unit 500 may include an optical wedge located below the self-luminous panel 100 and capable of extracting light from the self-luminous panel 100 contacting the optical wedge, an optical sensor array receiving the light emitted from the self-luminous panel 100 through the optical wedge, and an optical imaging module located between the optical wedge and the optical sensor array and imaging the light extracted by the optical wedge on the optical sensor array.
The optical transmission block may include a light detection sensor array or a light sensor array that receives light emitted from the light emitting panel 100 and returns by being reflected by a fingerprint, and the received light may enter the optical imaging unit as a part of an imaging sensor area and form an image on the sensing area.
In addition, the specific constitution and method for sensing reflected light in the optical sensor module of the present invention can be applied to the contents described in korean laid-open patent No. 10-2017-0106425 as well.
< image display apparatus >
Still another aspect of the present invention is an image display device including the optical sensor module 000, which has an advantage of further improving a fingerprint recognition rate by including the optical sensor module 000.
Examples of the image display device include a liquid crystal projector, a display device for a game machine, a display device for a portable terminal such as a mobile phone, a display device for a digital camera, a display device for a car navigation, a display screen display device for a notebook, a computer, and the like, and any image display device equipped with a fingerprint sensor can be used without limitation.
Hereinafter, preferred embodiments are provided to facilitate understanding of the present invention, but it is apparent to those skilled in the art that the following embodiments are merely illustrative of the present invention, and various changes and modifications can be made within the scope and technical spirit of the present invention, and such changes and modifications also fall within the scope of the appended claims. In the following examples and comparative examples, "%" and "part(s)" representing the content are based on weight unless otherwise specified.
Production example 1 production of polarizing plate
A polarizer was manufactured by laminating TAC film (Konica minota, KC2UAW), PVA film (korearay, VF-PE3000), TAC film (Konica minota, KC2UAW), PSA layer (linkage, 5um acrylic PSA), λ/2 retardation layer (Fujifilm, QLAA218), PSA layer (linkage, 5um acrylic PSA), λ/4 retardation layer (Fujifilm, QLAB218), PSA layer (linkage, 25um acrylic PSA).
Experimental example 1 measurement of Normal reflectance
An optical laminate was produced by sequentially laminating glass as a window substrate, a polyethylene terephthalate (PET) film as a window protective film, the polarizing plate of production example 1, and glass from below.
A reflecting plate having an SCI reflectance of 96% that can achieve regular reflection is laminated on the side of the glass disposed below where the window protective film is not attached, and a measurement device (CM2600d, konica minolta, equivalent to a self-luminous panel) for measuring light reflected from the reflecting plate is provided on the side of the glass laminated on the upper surface where the polarizing plate is not attached. In this case, CM2600d was used as a light source.
The regular reflectance of light irradiated from the above-mentioned measuring device (CM2600d, corresponding to a self-luminous panel from konica minolta) and reflected and returned after reaching the reflective plate was measured, and at this time, the reflectance for each angle was measured while changing the angle between the absorption axis of the polarizing plate and the PET film at 15 ° intervals. The regular reflectance is calculated by a method shown in the following equation 1.
[ mathematical formula 1]
Normal reflectance is SCI (specular component Included) reflectance-SCE (specular component Included) reflectance excluding reflectance
The results of the normal reflectance at each angle measured at this time are shown in table 1 below and fig. 3.
[ Table 1]
Referring to table 1 and fig. 3, it can be confirmed that the regular reflectance is improved when the angle between the absorption axis of the polarizing plate and the retardation axis of the window protective film satisfies the configuration of the means a) of the present invention.
Experimental example 2 measurement of Normal reflectance
An optical laminate was produced by sequentially laminating glass as a window substrate, a polyethylene terephthalate (PET) film as a window protective film, a λ/4 retardation layer (QLAB 218, fuji film corporation), the polarizing plate of the production example 1, and glass from below.
A reflecting plate having an SCI reflectance of 96% that can achieve regular reflection is laminated on the side of the glass disposed below where the window protective film is not attached, and a measurement device (CM2600d, konica minolta, equivalent to a self-luminous panel) for measuring light reflected from the reflecting plate is provided on the side of the glass laminated on the upper surface where the polarizing plate is not attached. In this case, CM2600d was used as a light source.
The regular reflectance of light irradiated from the above-mentioned measuring device (CM2600d, corresponding to a self-luminous panel from konica minolta) and reflected and returned after reaching the reflective plate was measured, and at this time, the reflectance for each angle was measured while changing the angle between the absorption axis of the polarizing plate and the PET film at 15 ° intervals. The normal reflectance is calculated by the method shown in the above equation 1.
The results of the normal reflectance at each angle measured at this time are shown in table 2 below and fig. 4.
[ Table 2]
Referring to the above table 2 and fig. 4, it can be confirmed that the regular reflectance is maintained at a constant level in the case where the λ/4 retardation layer is further included between the window protective film and the polarizing plate as disclosed in the present invention.
Experimental example 3 fingerprint identification Rate Difference experiment
A smartphone (NEX, Vovo) including a polarizing plate, a self-luminous panel, a window, and a fingerprint sensor unit was prepared. The fingerprint recognition speed was measured when the angles between the absorption axis of the smartphone including the polarizing plate and the slow axis of the window protective film were different from each other by laminating PET films as window protective films at various angles on the smartphone, and the results are shown in table 3 below.
[ Table 3]
Referring to table 3 above, it can be confirmed that the fingerprint recognition speed is at the same level as that of the comparative example when the window protective film is not attached in the case of the example satisfying the included angle disclosed in the present invention, and it can be confirmed that the fingerprint recognition speed is significantly reduced compared to the comparative example in the case of comparative examples 1 and 2 deviating from the included angle disclosed in the present invention.
Claims (8)
1. An optical sensor module, comprising:
a self-luminous panel for irradiating light;
a polarizing plate on one side of the self-light emitting panel;
a window on one side of the polarizing plate;
a window protective film on at least one side of the window;
a fingerprint sensing part which is positioned on the other surface of the self-luminous panel where the polarizing plate is positioned and senses light which is irradiated by the self-luminous panel and reflected by a fingerprint of a user,
the fingerprint identification rate improving method comprises the following fingerprint identification rate improving means:
a) the included angle between the absorption axis of the polarizing plate and the retardation axis of the window protective film is-15 degrees or 75-105 degrees, or
b) A lambda/4 phase difference layer is further included between the polarizing plate and the window protective film.
2. The optical sensor module of claim 1, wherein the window protective film is a polyethylene terephthalate film.
3. The optical sensor module according to claim 1, wherein the polarizing plate further comprises a circularly polarizing retardation film.
4. The optical sensor module of claim 1, wherein the self-light emitting panel comprises a pixel electrode, a pixel defining film, a display layer, a counter electrode, and an encapsulation layer.
5. The optical sensor module according to claim 1, wherein the polarizing plate comprises a substrate, a polarizing layer, a circularly polarizing retardation layer, and an adhesive layer.
6. The optical sensor module according to claim 1, wherein the light reflected by the fingerprint in the means a) has a positive reflectance of 33% or more.
7. The optical sensor module as claimed in claim 1, wherein the positive reflectivity of the light reflected by the fingerprint in the means b) is 23-27%.
8. An image display device comprising the optical sensor module according to any one of claims 1 to 7.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20180100166 | 2018-08-27 | ||
| KR10-2018-0100166 | 2018-08-27 | ||
| KR1020180148854A KR102197941B1 (en) | 2018-08-27 | 2018-11-27 | Optical sensor module including means for improving fingerprint recognition rate of optical fingerprint sensor |
| KR10-2018-0148854 | 2018-11-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110866521A true CN110866521A (en) | 2020-03-06 |
Family
ID=69652192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910790517.8A Withdrawn CN110866521A (en) | 2018-08-27 | 2019-08-26 | Optical sensor module and image display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110866521A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112271198A (en) * | 2020-10-23 | 2021-01-26 | 维信诺科技股份有限公司 | Display device |
Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005105140A (en) * | 2003-09-30 | 2005-04-21 | Fuji Photo Film Co Ltd | Transparent polymer film, and polarizing plate and liquid crystal display device obtained by using the same |
| CN101389987A (en) * | 2006-02-28 | 2009-03-18 | 株式会社日本触媒 | Retardation film |
| JP2009123511A (en) * | 2007-11-14 | 2009-06-04 | Canon Inc | Light-emitting device |
| WO2009098856A1 (en) * | 2008-02-05 | 2009-08-13 | Nippon Oil Corporation | Elliptical polarizer, method for producing the same and image display employing elliptical polarizer |
| KR20100101981A (en) * | 2009-03-10 | 2010-09-20 | 동우 화인켐 주식회사 | Narrowviewing liquid crystal display |
| JP2013019941A (en) * | 2011-07-07 | 2013-01-31 | Dic Corp | Image display device and protective film |
| US20130128368A1 (en) * | 2010-07-20 | 2013-05-23 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Fluidic variable focal length optical lens and method for manufacturing the same |
| US20140118826A1 (en) * | 2012-10-30 | 2014-05-01 | Apple Inc. | Displays With Polarizer Layers for Electronic Devices |
| CN104463107A (en) * | 2014-11-21 | 2015-03-25 | 上海箩箕技术有限公司 | Backlight plate, optical imaging device and identification equipment |
| CN104834042A (en) * | 2014-02-07 | 2015-08-12 | 住友化学株式会社 | Method for producing elongate polarizer plate |
| KR20150100183A (en) * | 2014-02-25 | 2015-09-02 | 제일모직주식회사 | Optical film, liquid crystal display including the same and method for preparing protective film applied to the same |
| CN105283783A (en) * | 2013-06-06 | 2016-01-27 | 富士胶片株式会社 | Optical sheet member and image display device employing same |
| CN105683788A (en) * | 2013-10-29 | 2016-06-15 | 住友化学株式会社 | Polarizing plate |
| CN106023822A (en) * | 2015-03-31 | 2016-10-12 | 住友化学株式会社 | Oled display device and production method thereof |
| CN106067018A (en) * | 2016-08-08 | 2016-11-02 | 京东方科技集团股份有限公司 | A kind of fingerprint recognition display floater and display device |
| CN107209595A (en) * | 2015-01-26 | 2017-09-26 | 东友精细化工有限公司 | Membrane contact sensor and its manufacture method |
| CN107735704A (en) * | 2015-07-22 | 2018-02-23 | 日东电工株式会社 | Polarization film laminate, liquid crystal panel and the organic EL panel of transparency conducting layer with transparent adhesive layer and patterning |
| CN108009533A (en) * | 2018-01-04 | 2018-05-08 | 敦捷光电股份有限公司 | Optical fingerprint identification system |
-
2019
- 2019-08-26 CN CN201910790517.8A patent/CN110866521A/en not_active Withdrawn
Patent Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005105140A (en) * | 2003-09-30 | 2005-04-21 | Fuji Photo Film Co Ltd | Transparent polymer film, and polarizing plate and liquid crystal display device obtained by using the same |
| CN101389987A (en) * | 2006-02-28 | 2009-03-18 | 株式会社日本触媒 | Retardation film |
| JP2009123511A (en) * | 2007-11-14 | 2009-06-04 | Canon Inc | Light-emitting device |
| WO2009098856A1 (en) * | 2008-02-05 | 2009-08-13 | Nippon Oil Corporation | Elliptical polarizer, method for producing the same and image display employing elliptical polarizer |
| KR20100101981A (en) * | 2009-03-10 | 2010-09-20 | 동우 화인켐 주식회사 | Narrowviewing liquid crystal display |
| US20130128368A1 (en) * | 2010-07-20 | 2013-05-23 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Fluidic variable focal length optical lens and method for manufacturing the same |
| JP2013019941A (en) * | 2011-07-07 | 2013-01-31 | Dic Corp | Image display device and protective film |
| US20140118826A1 (en) * | 2012-10-30 | 2014-05-01 | Apple Inc. | Displays With Polarizer Layers for Electronic Devices |
| CN105283783A (en) * | 2013-06-06 | 2016-01-27 | 富士胶片株式会社 | Optical sheet member and image display device employing same |
| CN105683788A (en) * | 2013-10-29 | 2016-06-15 | 住友化学株式会社 | Polarizing plate |
| CN104834042A (en) * | 2014-02-07 | 2015-08-12 | 住友化学株式会社 | Method for producing elongate polarizer plate |
| KR20150100183A (en) * | 2014-02-25 | 2015-09-02 | 제일모직주식회사 | Optical film, liquid crystal display including the same and method for preparing protective film applied to the same |
| CN104463107A (en) * | 2014-11-21 | 2015-03-25 | 上海箩箕技术有限公司 | Backlight plate, optical imaging device and identification equipment |
| CN107209595A (en) * | 2015-01-26 | 2017-09-26 | 东友精细化工有限公司 | Membrane contact sensor and its manufacture method |
| CN106023822A (en) * | 2015-03-31 | 2016-10-12 | 住友化学株式会社 | Oled display device and production method thereof |
| CN107735704A (en) * | 2015-07-22 | 2018-02-23 | 日东电工株式会社 | Polarization film laminate, liquid crystal panel and the organic EL panel of transparency conducting layer with transparent adhesive layer and patterning |
| CN106067018A (en) * | 2016-08-08 | 2016-11-02 | 京东方科技集团股份有限公司 | A kind of fingerprint recognition display floater and display device |
| CN108009533A (en) * | 2018-01-04 | 2018-05-08 | 敦捷光电股份有限公司 | Optical fingerprint identification system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112271198A (en) * | 2020-10-23 | 2021-01-26 | 维信诺科技股份有限公司 | Display device |
| CN112271198B (en) * | 2020-10-23 | 2024-05-03 | 维信诺科技股份有限公司 | Display device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6579245B2 (en) | Display device with capacitive touch panel | |
| KR102646618B1 (en) | Display device and manufacturing method of the same | |
| US10762326B2 (en) | Fingerprint identification device and manufacturing method thereof, and electronic device | |
| CN108509096B (en) | High performance touch sensor and method of manufacturing the same | |
| US20080266273A1 (en) | Interactive display system | |
| TW202018481A (en) | Display device having an optical sensor | |
| TWI718055B (en) | Protective film for organic light emitting diode display including fingerprint authentication device | |
| KR102567809B1 (en) | electronic device including light-transmissive film and method for manufacturing the same | |
| US20180088712A1 (en) | Display device and method of manufacturing the same | |
| EP3040815A1 (en) | Display device | |
| TW201331145A (en) | Structures and manufacturing methods for glass covered electronic devices | |
| US9025100B2 (en) | Display with shielding antireflection layer | |
| CN109725378B (en) | Protective film, method and device for cutting protective film | |
| US11068104B2 (en) | Touch panel and display device including the same | |
| US11422648B2 (en) | Bendable display device with sensing electrode | |
| US20160299630A1 (en) | Hybrid touch sensing electrode and touch screen panel comprising same | |
| CN106873827B (en) | Touch polarization unit, flexible touch display device and manufacturing method of flexible touch display device | |
| US20160306477A1 (en) | Touch panel | |
| CN110866521A (en) | Optical sensor module and image display device | |
| US20220354009A1 (en) | Cover for display panel, and display apparatus | |
| KR102197941B1 (en) | Optical sensor module including means for improving fingerprint recognition rate of optical fingerprint sensor | |
| WO2020262143A1 (en) | Optical layered body | |
| JP5974075B2 (en) | Touch panel | |
| KR102504609B1 (en) | Fingerprint sensing unit using variable retarder and electronic device with the same | |
| KR102658713B1 (en) | Force touch sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200306 |