CN109411504A - OLED screen body and optical fingerprint identification device as fingerprint identification device light source - Google Patents
OLED screen body and optical fingerprint identification device as fingerprint identification device light source Download PDFInfo
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- CN109411504A CN109411504A CN201710703601.2A CN201710703601A CN109411504A CN 109411504 A CN109411504 A CN 109411504A CN 201710703601 A CN201710703601 A CN 201710703601A CN 109411504 A CN109411504 A CN 109411504A
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- oled screen
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/50—OLEDs integrated with light modulating elements, e.g. with electrochromic elements, photochromic elements or liquid crystal elements
-
- 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
- G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
-
- 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
- G06V40/1324—Sensors therefor by using geometrical optics, e.g. using prisms
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/85—Arrangements for extracting light from the devices
- H10K50/856—Arrangements for extracting light from the devices comprising reflective means
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/85—Arrangements for extracting light from the devices
- H10K50/858—Arrangements for extracting light from the devices comprising refractive means, e.g. lenses
Abstract
The present invention provides a kind of encapsulation cover plates used as optical fingerprint identification device with prism structure, it is provided with opaque material layer or the transparent substrate between the transparent substrate and transparent anode layer, the side of the transparent anode layer is provided with opaque material.It utilizes the optical characteristics of prism, compared to common plane glass, its light is after the refraction of prism and reflection, filter out spurious rays, image contrast is higher, it is easier to it identifies, and integrated form fingerprint recognition OLED transparent screen body is due to using the opaque material layer with microcellular structure, the interference of light that OLED screen body itself emits to detector can be effectively reduced, makes to be imaged apparent.
Description
Technical field
The present invention relates to optical fingerprint identification device technical fields, and in particular to a kind of integrated optical using OLED screen
Fingerprint identification device.
Background technique
Optical fingerprint collector is a fingerprint capturer for needing own light source, its light source mostly uses LED light source at present
And the mode of light guide plate, the shortcomings that there is efficiencies is low, illumination is irregular, group reload request is high, higher cost.
Since (full name in English is Organic Light Emitting Device to organic electroluminescence device, referred to as
OLED) has many advantages, such as fast, the pollution-free, high contrast of response, planarization, frivolous, people attempt to refer to using OLED substitution optics
LED light source in line collector, when overcoming the shortcomings of that LED light source and light guide plate are used as light source in optical fingerprint collector.
CN106156753A discloses a kind of array substrate with fingerprint identification function and preparation method thereof, display dress
It sets, which includes the optical sensor driving unit being integrated on OLED backboard, and the optical sensor driving unit is for receiving
OLED light emitting unit transmitting passes through backboard via the light of finger paddy spinal reflex, determines finger according to the light intensity of the light
Lines information.The common OLED light source that the program uses, bigger, the problem of image quality difference that there are signal noises when use.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is that overcome in the prior art OLED be used as fingerprint identification device light source
When have the defects that signal noise is bigger, image quality is poor, service life is short, know to provide a kind of integrated optical fingerprint
Other device, the device filter out spurious rays using the optical characteristics of prism using improved OLED transparent screen body, are imaged
Contrast is higher, it is easier to identify, and due to using the opaque material layer with microcellular structure, can effectively reduce
Interference of the light that OLED screen body itself emits to detector, thus make to be imaged it is apparent,
For achieving the above object, the present invention adopts the following technical scheme:
A kind of OLED screen body as fingerprint identification device light source, including be stacked transparent substrate, transparent anode layer,
Organic light-emitting units and transparent cathode,
Outside the screen body of the OLED screen body light direction side and/or it is internally provided with several trigones arranged side by side
Mirror, the height of the prism are 0.1um-1000um, preferably 10um-500um；Width is 0.1um-1000um, and width is excellent
Be selected as 10um-500um, between the adjacent two rows prism between be divided into 0-1000um, preferably 10um-500um.
The prism is arranged in the encapsulation cover plate close to the side of the transparent cathode or is arranged in the encapsulation
Side of the cover board far from the transparent cathode, the bottom surface of the prism contact setting with the encapsulation cover plate.
The OLED screen body is provided with several light emitting regions and non-luminous region.
Opaque material layer or the transparent substrate are provided between the transparent substrate and transparent anode layer far from described
The side of transparent anode layer is provided with opaque material layer；The opaque material layer be equipped with several micropores, the micropore with
The non-luminous region is correspondingly arranged.
Alternatively, it is parched if being provided between the corresponding transparent anode layer of the non-luminous region and transparent cathode
Bright insulation protrusion, the projection of the transparent insulation protrusion on the transparent substrate cover the micropore and project on the transparent substrate, institute
The cross-sectional area for stating transparent insulation protrusion be slightly larger than or equal to the micropore cross-sectional area.
Alternatively, the transparent insulation protrusion is arranged between transparent anode layer and organic light-emitting units, and described has
The machine luminescence unit covering transparent insulation protrusion.
Alternatively, the transparent insulation protrusion is arranged in micropore and passes through the transparent anode layer, and described is organic
Luminescence unit covering the transparent insulation protrusion and transparent anode layer.
The diameter of the micropore is 1um-500um, and the spacing between the adjacent micropore is 1um-10mm.
A kind of integrated optical fingerprint identification device, including OLED screen body described in optical sensor, the optical sensor
It is arranged far from the side of OLED screen body light-emitting surface；
When finger pressing is on the cap of the OLED screen body, the light of light emitting region penetrates transparent cathode and trigone
Mirror structure, encapsulated layer, are irradiated at finger print, then reflect, and by the reflection and refraction of prism, some light passes through institute
Optical sensor is reached after stating micropore to form fingerprint recognition signal.
Another integrated optical fingerprint identification device, including optical sensor and the OLED screen body, the optics sense
Device is answered to be arranged far from the side of OLED screen body light-emitting surface, when finger pressing is on the cap of the OLED screen body, fingerprint
Convex portion destroy OLED go out optical interface, by the reflection and refraction of prism, through transparent cathode and organic layer
It after transparent anode and substrate, is imaged in optical sensor, to form fingerprint recognition signal.
Compared with prior art, technical solution of the present invention has the following beneficial effects:
1, optical fingerprint identification device provided by the invention uses the encapsulation cover plate with prism structure.Utilize prism
Optical characteristics compares common plane glass, and light filters out spurious rays after the refraction of prism and reflection, is imaged
Contrast is higher, it is easier to identify.
2, as preferred mode, OLED screen body of the invention is provided with opaque material far from the side of its light direction
Layer, the opaque material layer are equipped with several micropores, and the micropore is correspondingly arranged with the non-luminous region.The present invention by
In being provided with the opaque material layer with microcellular structure, wherein opaque region is correspondingly arranged with light emitting region, in this way can be with
The effective light for stopping light emitting region to issue is captured by optical sensor, and micro-porous area is correspondingly arranged with non-luminous region,
The light that luminous zone issues is reflected after light direction encounters finger across OLED screen body, by optical sensor after micropore
Device captures, therefore can effectively shield interference of the light of luminous zone to fingerprint reflection light, obtains fingerprint image high-definition
Shape.Further, since the prism being arranged on encapsulation cover plate can further filter out reflected light, under the cooperation of the two,
It can make the interference for shielding more reflected lights, obtain fingerprint graph extremely high-definition.
3, the present invention is used as the OLED screen body of fingerprint identification device light source, and the transparent insulation for being used to form non-luminous region is convex
The cross-sectional area risen be slightly larger than or equal to the micropore cross-sectional area, the light that can effectively prevent luminous zone in this way is logical
It crosses the modes such as various reflection diffusing reflections to be captured by optical sensor, therefore the light that can effectively shield luminous zone reflects fingerprint
The interference of light obtains fingerprint graph high-definition.
4, to guarantee to be captured by optical sensor to greatest extent after the light of fingerprint reflection reflects, the present invention is arranged micro-
The diameter in hole is 1um-500um, and the spacing between the adjacent micropore is 1um-10mm.It is verified, using this design
Opaque material layer can to greatest extent be captured fingerprint reflection light by optical sensor, form the fingerprint image of high quality
Shape.
5, compared with conventional fingerprint identification, it can issue in 380-760nm and appoint by using the organic luminous layer of different materials
The light of meaning wave band, preferably 500-570nm are green light band, and efficiency highest, stability is high, and recognition capability is strong.The present invention
Structure it is simple, it is low in energy consumption, be easily assembled, be at low cost.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1-1 is the structural schematic diagram of optical fingerprint identification system of the present invention；
Fig. 1-2 is the structural schematic diagram of optical fingerprint identification system second embodiment
Fig. 2 is the structural schematic diagram of opaque material layer；
Fig. 3-1 is the structural schematic diagram of top-illuminating OLED screen body third embodiment
Fig. 3-2 is the structural schematic diagram of the 4th embodiment of top-illuminating OLED screen body.
Fig. 4-1 is the structural schematic diagram of the 5th embodiment of top-illuminating OLED screen body；
Fig. 4-2 is the structural schematic diagram of top-illuminating OLED screen body sixth embodiment；
Fig. 5-1 is the structural schematic diagram of the 7th embodiment of top-illuminating OLED screen body；
Fig. 5-2 is the structural schematic diagram of the 8th embodiment of top-illuminating OLED screen body；
Fig. 6-1 is the structural schematic diagram of the 9th embodiment of top-illuminating OLED screen body；
Fig. 6-2 is the structural schematic diagram of the tenth embodiment of top-illuminating OLED screen body；
Fig. 7 is that prism light changes schematic diagram；
Fig. 8 is the cross-sectional view of prism；
Fig. 9 is the bottom section schematic diagram of prism；
Description of symbols: 1- transparent substrate, 2- transparent anode layer, 3- organic light-emitting units, 4- transparent cathode, 5- envelope
Capping plate, 6- transparent insulation protrusion, 7- opaque material layer, 9- non-luminous region, 10- micropore, 11- prism, 12- optics sense
Answer device, 15- encapsulating material.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
The present invention can be embodied in many different forms, and should not be construed as limited to embodiment set forth herein.
On the contrary, providing these embodiments, so that the disclosure will be thorough and complete, and design of the invention will be fully conveyed to
Those skilled in the art, the present invention will only be defined by the appended claims.In the accompanying drawings, for clarity, the area Ceng He can be exaggerated
The size and relative size in domain.It should be understood that when element such as layer, region or substrate are referred to as " being formed in " or " setting
" another element "upper" when, which can be arranged directly on another element, or there may also be intermediary elements.
On the contrary, intermediary element is not present when element is referred to as on " being formed directly into " or " being set up directly on " another element.
As long as in addition, the non-structure each other of technical characteristic involved in invention described below different embodiments
It can be combined with each other at conflict.
As shown in Fig. 1-1 to Fig. 6-2, the present invention provides a kind of OLED screen body as fingerprint identification device light source, packets
The transparent substrate 1 being stacked, transparent anode layer 2, organic light-emitting units 3 and transparent cathode 4 are included, the OLED screen body goes out light
Outside the screen body of direction side and/or several prisms 11 arranged side by side are internally provided with, the height of the prism 11 is
0.1um-1000um, preferably 10um-500um, width 0.1um-1000um, width are preferably 10um-500um, and adjacent two
0-1000um, preferably 10um-500um are divided between arranging between the prism.
As shown in Figure 8 and Figure 9, four vertex of prism are respectively defined as point A, point B, point C, point D, midpoint A, point B, point
D constitutes the bottom surface of the prism, and point C is the vertex of prism.The height of the prism refers to its bottom surface (where the face ABD
Plane) to the vertical range between highest point (vertex C)；The bottom surface section of prism is triangle ABD, the height of the triangle
The width (vertical range of such as vertex D to line AB) of as herein described prism；Interval between adjacent two rows prism
Refer to distance nearest between the triangle in every row's prism bottom surface section, if vertex (such as D of first row prism bottom surface
Point) with some vertex (such as D point) of second row prism bottom surface recently, then the interval refer to two rows of prisms vertex it
Between interval；If certain of certain vertex (such as D point) of first row prism bottom surface and second row prism bottom surface are at (when such as AB)
Recently, then the interval refers to the vertical range of first row prism D point to the side second row prism AB.
The prism 11 is arranged in the encapsulation cover plate 5 close to the side of the transparent cathode 4 or is arranged described
Side of the encapsulation cover plate 5 far from the transparent cathode 4, the bottom surface of the prism 11 contact with the encapsulation cover plate 5 and set
It sets.
Preparing the material that the prism 11 uses is the transparent material that light transmittance is more than 95%.
Prism can be realized using modes such as micro- sand-blast, wet etching, pressure sinterings on shown encapsulation cover plate.
As second embodiment, OLED screen body of the invention is provided with several light emitting regions and non-luminous region；It is described
Opaque material layer 7 or the transparent substrate 1 are provided between transparent substrate 1 and transparent anode layer 2 far from the transparent anode
The side of layer 2 is provided with opaque material layer 7；The opaque material layer 7 is equipped with several micropores 10, the micropore 10 and institute
The non-luminous region stated is correspondingly arranged.
Preferably, it is parched if being provided between the corresponding transparent anode layer 2 of the non-luminous region and transparent cathode 4
Bright insulation protrusion 6, projection of the transparent insulation protrusion 6 on transparent substrate 1 cover the micropore 10 in 1 upslide of transparent substrate
The cross-sectional area of shadow, the transparent insulation protrusion 6 be slightly larger than or equal to the micropore 10 cross-sectional area.
The transparent insulation protrusion 6 is arranged between transparent anode layer 2 and organic light-emitting units 3, the organic light emission
Unit 3 covers the transparent insulation protrusion 6.
The transparent insulation protrusion 6 is arranged in micropore 10 and passes through the transparent anode layer 2, the organic light emission list
3 covering of the member transparent insulation protrusion 6 and transparent anode layer 2.
The diameter of the micropore 10 is 10um-500um, and the spacing between the adjacent micropore is 10um-10mm.
The organic light-emitting units of the invention are emitting red light unit, blue-light-emitting unit, green emitting unit or white
Color luminescence unit.
The material of opaque material layer 7 is without particular/special requirement, as long as opaque can be realized goal of the invention.As preferred side
Formula, opaque material layer are opaque conductive material layer, can be for metal layer such as Al, Ag, Cu etc. or various alloys such as
Mo/Al/Mo, Cr/Al/Cr etc..The opaque conductive material layer 7 is Al metal layer, Ag metal layer, Cu metal layer, Mo/Al/
Mo alloying metal layer or Cr/Al/Cr alloying metal layer.
Transparent cathode 4 can choose thin metal, such as Ag, Al or metal oxide, such as ITO AZO.
A kind of integrated optical fingerprint identification device, including OLED screen described in optical sensor 12 and Fig. 1-1 or Fig. 1-2
Body, the optical sensor 12 are arranged far from the side of OLED screen body light-emitting surface, when finger is pressed in the OLED screen body
When on cap, the convex portion of fingerprint destroys the optical interface out of OLED, and by the reflection and refraction of prism, transmission is transparent
After cathode and organic layer transparent anode and substrate, it is imaged in the sensor, to form fingerprint recognition signal.
It is illustrated in figure 7 prism (solid line) and plate (dotted line) light to compare, as can be seen from the figure prism can be with
The stray light of wide-angle is filtered out, wherein light is injected from the face BC, only has small part light to be reflected from the side AB.
A kind of integrated optical fingerprint identification device, including optical sensor (12) and Fig. 1-1, Fig. 6-2 OLED screen
Body, the optical sensor (12) are arranged far from the side of OLED screen body light-emitting surface；
When finger pressing is on the cap of the OLED screen body, the light of light emitting region penetrates transparent cathode and trigone
Mirror structure, encapsulated layer, are irradiated at finger print, then reflect, and by the reflection and refraction of prism, some light passes through institute
It states micropore (10) and reaches optical sensor (12) afterwards to form fingerprint recognition signal.
The light source of optical fingerprint identification device of the invention uses OLED screen body, and the OLED screen body, which has, to be implemented as follows
, in corresponding attached drawing 1-1 to Fig. 6-2:
Embodiment 1
Optical fingerprint identification device in the present embodiment is as Figure 1-1, including the transparent substrate 1, transparent being stacked
Anode layer 2, organic light-emitting units 3 and transparent cathode 4 are set inside or outside the screen body of the OLED screen body light direction side
Several prisms 11 arranged side by side are equipped with, the height of the prism 11 is 0.1um-1000um, preferably 10um-500um.
Specifically, the encapsulation cover plate 5 is arranged in close to the side of the transparent cathode 4 (as schemed in the prism 11
Shown in 1-1) or side (as shown in Figs. 1-2) of the encapsulation cover plate 5 far from the transparent cathode 4, the trigone be set
The bottom surface of mirror 11 contacts setting with the encapsulation cover plate 5.
A kind of integrated optical fingerprint identification device, including optical sensor 12 and the OLED screen body, the optics sense
Device 12 is answered to be arranged far from the side of OLED screen body light-emitting surface；
When finger pressing is on the cap of the OLED screen body, the convex portion of fingerprint destroys Chu Guang circle of OLED
Face, the light that display area issues pass through the reflection and refraction of prism, through transparent cathode and organic layer, transparent anode and
After substrate, it is imaged on optical sensor 12, to form fingerprint recognition signal.
Embodiment 2
Optical fingerprint identification device in the present embodiment, including OLED screen body and optical sensor shown in Fig. 3-1 or Fig. 3-2
Device 12, the optical sensor 12 are arranged far from the side of OLED screen body light-emitting surface, and light source OLED screen body is top-illuminating OLED
Shield body, comprising:
It is the transparent substrate 1 that is superposed, transparent anode layer 2, several transparent insulation protrusions 6, organic light-emitting units 3, transparent
Cathode layer 4 and encapsulation cover plate 5, the opaque material layer 7 is arranged between the transparent substrate 1 and transparent anode layer 2, described
Opaque material layer 7 is equipped with several micropores 10, and the transparent insulation protrusion 6 is arranged in micropore 10 and passes through the transparent sun
Pole layer 2, the organic light-emitting units 3 cover the transparent insulation protrusion 6 and transparent anode layer 2, due to insulation protrusion 6
In the presence of, above the luminescent material no currents of organic light-emitting units pass through, cannot shine, form non-luminous region.
Several prisms 11 arranged side by side are provided with inside or outside the screen body of the OLED screen body light direction side,
The height of the prism 11 is 0.1um-1000um, preferably 10um-500um.Specifically, the prism 11 is arranged in institute
Encapsulation cover plate 5 is stated close to the side (as shown in figure 3-1) of the transparent cathode 4 or is arranged in the encapsulation cover plate 5 far from institute
The side (as shown in figure 3-2) of transparent cathode 4 is stated, the bottom surface of the prism 11 contacts setting with the encapsulation cover plate 5.
The organic light-emitting units 3 cover the transparent insulation protrusion 6 and are filled in adjacent transparent insulation protrusion 6
Between gap, projection of the transparent insulation protrusion 6 on transparent substrate 1 cover the micropore 10 in 1 upslide of transparent substrate
Shadow, the cross-sectional area of the transparent insulation protrusion 6 are equal to the cross-sectional area of the micropore 10.
When finger presses on the OLED screen body light-emitting surface, the light of light emitting region penetrates transparent cathode and encapsulation
Layer, is irradiated at finger print, and the convex portion of fingerprint destroys the optical interface that goes out of OLED, and the light that light emitting region issues passes through
The reflection and refraction of prism, by encapsulation cover plate 5, transparent cathode 4, organic light-emitting units 3, transparent insulating layer (PI layers) and
Opaque material layer 7, some light reach optical sensor 12 after passing through the micropore 10 to form fingerprint recognition signal.
The material of opaque material layer 7 is without particular/special requirement, can be metal as long as opaque can be realized goal of the invention
Layer, such as Mo/Al/Mo, Ag etc..
10 shape of micropore of opaque material layer 7 can be circle without particular/special requirement, and hexagon is square, triangle,
One or more of diamond shape, pentagon.
The a length of 500-570nm of luminescent light wave of the OLED screen body.
The diameter of the micropore is 10um-500um, and the spacing between the adjacent micropore is 10um-10mm.It needs
It is noted that the diameter of micropore herein has the meaning that diameter is the circle of ordinary meaning if micropore is circle
Diameter；When the shape of micropore is other shapes, described is directly the direct of its circumscribed circle, when for irregular shape, institute
What is stated is directly the direct distance of the widest two o'clock of the graphic width.Spacing between adjacent cells refers to two neighboring micropore most
The direct distance of nearly two o'clock.
The OLED screen body of the present embodiment the preparation method is as follows:
S1, opaque material layer 7 and transparent anode layer 2 are formed on the transparent substrate, then carry out photoetching, make by lithography small
Hole, the diameter of aperture are 10um-500um, and the spacing between micropore is 10um-10mm；
S2, transparent insulating layer is formed in 2 spin coating mode of transparent anode layer, is then lithographically formed transparent insulation protrusion 6 again, thoroughly
Bright insulation protrusion 6 covers the micropore 10 with the projection on 10 transparent substrate 1 of micropore and projects on transparent substrate 1, described transparent
The cross-sectional area of insulation protrusion 6 is slightly larger than the cross-sectional area of the micropore 10.If 10 diameter of micropore is 20um, then transparent insulation
The diameter of protrusion 6 is 30um；
S3, successively vapor deposition forms organic light-emitting units 3, transparent cathode 4 on transparent anode layer 2；
The preparation process of prism can be realized using micro- sand-blast, wet etching, pressure sintering on S4, encapsulation cover plate；
S5, the substrate prepared and case chip are packaged pressing.
Embodiment 3
Optical fingerprint identification device in the present embodiment, including OLED screen body shown in Fig. 4-1 or Fig. 4-2 and optical sensor
12, the optical sensor 12 is arranged far from the side of OLED screen body light-emitting surface, and light source OLED screen body is top-illuminating OLED screen
Body, comprising:
It is the transparent substrate 1 that is superposed, transparent anode layer 2, several transparent insulation protrusions 6, organic light-emitting units 3, transparent
Cathode layer 4 and encapsulation cover plate 5, the opaque material layer 7 are arranged between the transparent substrate 1 and transparent anode layer 2.Such as figure
Shown in 3, the opaque material layer 7 is equipped with several micropores, and the opaque material layer 7 is provided with transparent anode layer 2, saturating
Bright anode layer 2 and micropore corresponding position, form transparent insulation protrusion 6, the top organic light-emitting units 3 for the protrusion 6 that insulate, due to
The presence of insulation protrusion 6, above the luminescent material no currents of organic light-emitting units pass through, cannot shine, be formed non-luminescent
Region.
Several prisms 11 arranged side by side are provided with inside or outside the screen body of the OLED screen body light direction side,
The height of the prism 11 is 0.1um-1000um, preferably 10um-500um.Specifically, the prism 11 is arranged in institute
Encapsulation cover plate 5 is stated close to the side (as shown in Fig. 4-1) of the transparent cathode 4 or is arranged in the encapsulation cover plate 5 far from institute
The side (as shown in the Fig. 4-2) of transparent cathode 4 is stated, the bottom surface of the prism 11 and the encapsulation cover plate 5 are physically contacted
Setting.
The organic light-emitting units 3 cover the transparent insulation protrusion 6 and are filled in adjacent transparent insulation protrusion 6
Between gap, projection of the transparent insulation protrusion 6 on transparent substrate 1 cover the micropore 10 in 1 upslide of transparent substrate
Shadow, the cross-sectional area of the transparent insulation protrusion 6 are slightly larger than the cross-sectional area of the micropore 10.
When finger pressing is on the cap of the OLED screen body, the light of light emitting region penetrates transparent cathode and trigone
Mirror structure, encapsulated layer, are irradiated at finger print, then reflect, transparent by the reflection and refraction of encapsulation cover plate 5, prism
Cathode layer 4, organic light-emitting units 3, transparent insulating layer (PI layers) and opaque material layer 7, some light pass through the micropore
Optical sensor 12 is reached after 10 to form fingerprint recognition signal.
The material of opaque material layer 7 is without particular/special requirement, can be metal as long as opaque can be realized goal of the invention
Layer, such as Mo/Al/Mo, Ag etc..
10 shape of micropore of opaque material layer 7 can be circle without particular/special requirement, and hexagon is square, triangle,
One or more of diamond shape, pentagon.
The a length of 380-760nm of luminescent light wave of the OLED screen body.
The OLED screen body of the present embodiment the preparation method is as follows:
S1, opaque material layer 7 is formed on the transparent substrate, then carry out being lithographically formed micropore 10, the diameter of micropore is
10um-500um, the spacing between the adjacent micropore are 10um-10mm；
S2, transparent anode layer 2 is formed on opaque material layer 7, form transparent insulation in 2 spin coating mode of transparent anode layer
Then layer is lithographically formed transparent insulation protrusion 6 again, described in the projection covering in transparent insulation protrusion 6 and 10 transparent substrate 1 of micropore
Micropore 10 projects on transparent substrate 1, and the cross-sectional area of the transparent insulation protrusion 6 is slightly larger than the cross section of the micropore 10
Product.If 10 diameter of micropore is 20um, then the diameter of transparent insulation protrusion 6 is 30um；
S3, successively vapor deposition forms organic light-emitting units 3, transparent cathode 4 on transparent anode layer 2,；
The preparation process of prism can be realized using micro- sand-blast, wet etching, pressure sintering on S4, encapsulation cover plate
S5, the substrate prepared and case chip are packaged pressing.
Embodiment 4
Optical fingerprint identification device in the present embodiment, including OLED screen body and optical sensor as shown in Fig. 5-1 or Fig. 5-2
Device 12, the optical sensor 12 are arranged far from the side of OLED screen body light-emitting surface, and light source OLED screen body is top-illuminating OLED
Shield body, comprising:
Including be superposed transparent substrate 1, transparent anode layer 2, several transparent insulation protrusions 6, organic light-emitting units 3,
Transparent cathode 4 and encapsulation cover plate 5, the opaque material layer 7 are arranged in the transparent substrate 1 far from the transparent anode layer
2 side, with embodiment 2, this is repeated no more other structures.
Embodiment 5
Optical fingerprint identification device in the present embodiment, including as in Figure 6-1, the OLED screen body is that top shines
OLED screen body is the transparent substrate 1 being superposed, transparent anode layer 2, several transparent insulation protrusions 6, organic light-emitting units 3, transparent
The transparent substrate 1 is arranged in far from the transparent anode layer 2 in cathode layer 4 and encapsulation cover plate 5, the opaque material layer 7
Side, with embodiment 2, this is repeated no more other structures.
As interchangeable embodiment, as in fig. 6-2, the internal portion of screen of the OLED screen body light direction side and
Outside is provided with several prisms 11 arranged side by side, and the height of the prism 11 is 0.1um-1000um, preferably 10um-
500um。
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (10)
1. a kind of OLED screen body as fingerprint identification device light source, including transparent substrate (1), the transparent anode layer being stacked
(2), organic light-emitting units (3) and transparent cathode (4), which is characterized in that
Outside the screen body of the OLED screen body light direction side and/or it is internally provided with several prisms arranged side by side
(11), the height of the prism (11) is 0.1um-1000um, width 0.1um-1000um, the adjacent two rows prism
Between between be divided into 0-1000um.
2. being used as the OLED screen body of fingerprint identification device light source according to claim 1, which is characterized in that
Prism (11) setting close to the side of the transparent cathode (4) or is arranged in institute in the encapsulation cover plate (5)
State the side of encapsulation cover plate (5) far from the transparent cathode (4), the bottom surface of the prism (11) and the encapsulation cover plate
(5) contact setting.
3. being used as the OLED screen body of fingerprint identification device light source according to claim 1, which is characterized in that the prism
(11) height is 10um-500um, width 10um-500um, between the adjacent prism between be divided into 10um-500um.
4. being used as the OLED screen body of fingerprint identification device light source according to claim 1, which is characterized in that
The OLED screen body is provided with several light emitting regions and non-luminous region；
Opaque material layer (7) or the transparent substrate (1) are provided between the transparent substrate (1) and transparent anode layer (2)
Side far from the transparent anode layer (2) is provided with opaque material layer (7)；
The opaque material layer (7) is equipped with several micropores (10), and the micropore (10) is corresponding with the non-luminous region
Setting.
5. being used as the OLED screen body of fingerprint identification device light source according to claim 4, which is characterized in that
Several transparent insulations are provided between the corresponding transparent anode layer (2) of the non-luminous region and transparent cathode (4)
Raised (6), projection of the transparent insulation raised (6) on transparent substrate (1) cover the micropore (10) in transparent substrate (1)
The cross-sectional area of upper projection, the transparent insulation raised (6) be slightly larger than or equal to the micropore (10) cross-sectional area.
6. being used as the OLED screen body of fingerprint identification device light source according to claim 5, which is characterized in that the transparent insulation
Raised (6) are arranged between transparent anode layer (2) and organic light-emitting units (3), described in the organic light-emitting units (3) covering
Transparent insulation it is raised (6).
7. being used as the OLED screen body of fingerprint identification device light source according to claim 6, which is characterized in that the transparent insulation
Raised (6) setting is interior in micropore (10) and passes through the transparent anode layer (2), described in the organic light-emitting units (3) covering
Transparent insulation raised (6) and transparent anode layer (2).
8. being used as the OLED screen body of fingerprint identification device light source according to claim 7, which is characterized in that the micropore
(10) diameter is 1um-500um, and the spacing between the adjacent micropore is 1um-10mm.
9. a kind of integrated optical fingerprint identification device, which is characterized in that appoint including optical sensor (12) and claim 3-8
One OLED screen body, the optical sensor (12) are arranged far from the side of OLED screen body light-emitting surface；
When finger pressing is on the cap of the OLED screen body, the light of light emitting region penetrates transparent cathode and prism knot
Structure, encapsulated layer, are irradiated at finger print, then reflect, and by the reflection and refraction of prism, some light passes through described micro-
Hole (10) reaches optical sensor (12) afterwards to form fingerprint recognition signal.
10. a kind of integrated optical fingerprint identification device, which is characterized in that including optical sensor (12) and claim 1-3
Any one OLED screen body, the optical sensor (12) are arranged far from the side of OLED screen body light-emitting surface, when finger is pressed
When being pressed on the cap of the OLED screen body, the convex portion of fingerprint destroys the optical interface out of OLED, by prism
Reflection and refraction, after transparent cathode and organic layer, transparent anode and substrate, are imaged on optical sensor (12), from
And form fingerprint recognition signal.
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| CN201710703601.2A CN109411504B (en) | 2017-08-16 | 2017-08-16 | OLED screen body used as light source of fingerprint identification device and optical fingerprint identification device |
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| CN201710703601.2A CN109411504B (en) | 2017-08-16 | 2017-08-16 | OLED screen body used as light source of fingerprint identification device and optical fingerprint identification device |
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| CN109411504B (en) | 2021-07-13 |
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