CN108258017A - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN108258017A CN108258017A CN201810001780.XA CN201810001780A CN108258017A CN 108258017 A CN108258017 A CN 108258017A CN 201810001780 A CN201810001780 A CN 201810001780A CN 108258017 A CN108258017 A CN 108258017A
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- display panel
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- sensitive device
- light sensitive
- photosensitive area
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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
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
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- 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
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- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
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Abstract
The invention discloses a kind of display panel and display devices.Display panel, including：Light emitting functional layer, light emitting functional layer include multiple organic luminescent devices, and organic luminescent device is included along anode, organic luminous layer, the cathode stacked gradually perpendicular to the direction of display panel；Multiple light sensitive devices, positioned at display surface side of the light emitting functional layer far from display panel, surface of the light sensitive device far from organic luminescent device side is light-receiving surface；Multiple reflector elements, positioned at light sensitive device far from light emitting functional layer side, reflector element has concave reflecting surface, and concave reflecting surface is opposite with light-receiving surface, and the concave side of concave reflecting surface is towards light-receiving surface.In the fingerprint recognition stage, the light that organic luminescent device is sent out realizes fingerprint recognition via main body reflection is touched, then be imaged after concave reflecting surface reflects in light-receiving surface side.Light sensitive device is not limited by non-anode area of coverage size, and imaging can be completed in the reflector element by being correspondingly arranged below light sensitive device, and imaging system is simple.
Description
Technical field
The present invention relates to display technology field, more particularly, to a kind of display panel and display device.
Background technology
With the development of science and technology, occur a variety of display devices with fingerprint identification function in the market, such as mobile phone, tablet
Computer and intelligent wearable device etc..Fingerprint is all come with body for everyone, is unique, using referring to
Line identification function can improve the safety coefficient of display device.User operation have the display device of fingerprint identification function when,
With the fingerprint Identification sensor of finger touch display unit, it is possible to carry out Authority Verification, simplify Authority Verification process.
Existing fingerprint identification technology reflexes to fingerprint recognition generally by detection via main body (such as finger) is touched
The light of unit is detected, i.e., determines ridge and the paddy of fingerprint to the detection of light by fingerprint identification unit to complete to identify
Action.Fingerprint identification technology at present is divided into external hanging type and two kinds embedded by the installation position of fingerprint recognition sensing unit, plug-in
Formula refers to fingerprint recognition sensing unit being fabricated separately is bonded the fingerprint identification function for realizing display panel with display panel afterwards, embeds
Formula refers to fingerprint recognition sensing unit being produced in the film layer structure of display panel.Embedded fingerprint identification is aobvious in the prior art
Show panel, the fingerprint recognition stage can select light source of the organic luminescent device as fingerprint identification function, and organic luminescent device leads to
Often include anode, organic luminous layer and cathode.For pushing up illuminated organic luminescent device, in order to improve the utilization rate of light, sun
Pole needs to set reflecting layer, and light cannot be penetrated from anode, can only be emitted after reflection from the light-emitting surface of display panel.Usually will
Fingerprint recognition sensing unit is arranged in the non-anode area of coverage of display panel, and light is irradiated to fingerprint after touching main body reflection
It identifies on sensing unit, the light-receiving surface of fingerprint recognition sensing unit is oppositely arranged with touching main body namely of the prior art interior
Embedded fingerprint recognition system is all the front setting imaging system in display device.
When fingerprint recognition sensing unit is arranged on organic luminescent device close to the light-emitting surface side of display panel, if fingerprint
Identification sensing unit overlapped with anode overlay area, then show the stage, fingerprint recognition sensing unit, which is possible to block, to be shown
The amount of light of the organic luminescent device of panel；When fingerprint recognition sensing unit is arranged on organic luminescent device far from display panel
During light-emitting surface side, if fingerprint recognition sensing unit is overlapped with anode overlay area, in the fingerprint recognition stage, through touching main body
The some light of reflection can be blocked by organic luminescent device, and cannot be irradiated on the light-receiving surface of fingerprint recognition sensing unit, from
And influence the detection of fingerprint recognition；When fingerprint recognition sensing unit and organic luminescent device same layer are set, fingerprint recognition sensing
Unit can only also be arranged on the limited area of non-anode overlay area rather than anode overlay area, and imaging system is set in this position
System is also relatively difficult, if the size of increase fingerprint recognition sensing unit, can accordingly increase the area occupied of the non-anode area of coverage,
Correspondingly, the area of anode overlay area can reduce, the light-emitting zone that organic luminous layer is formed can accordingly reduce, and screen can be caused to account for
Than reducing.In short, in existing embedded fingerprint identification display panel, the setting of fingerprint recognition sensing unit is covered by non-anode
The area in area limits larger, the more difficult setting of imaging system.
Therefore it provides a kind of display panel that setting imaging system can not be limited by non-anode area of coverage size and display
Device realizes fingerprint identification function, is this field urgent problem to be solved.
Invention content
In view of this, the present invention provides a kind of display panel and display devices, solve not big by the non-anode area of coverage
The technical issues of small limitation setting imaging system, realization fingerprint identification function.
In a first aspect, in order to solve the above-mentioned technical problem, the present invention proposes a kind of display panel, including：
Light emitting functional layer, light emitting functional layer include multiple organic luminescent devices, and organic luminescent device is included along perpendicular to aobvious
Show anode, organic luminous layer, cathode that the direction of panel stacks gradually；
Multiple light sensitive devices, positioned at display surface side of the light emitting functional layer far from display panel, light sensitive device is far from organic
The surface of luminescent device side is light-receiving surface；
Multiple reflector elements, positioned at light sensitive device far from light emitting functional layer side, reflector element has concave reflecting surface, recessed
Shape reflecting surface is opposite with light-receiving surface, and the concave side of concave reflecting surface is towards light-receiving surface.
Second aspect, in order to solve the above-mentioned technical problem, the present invention propose a kind of display device, including proposed by the present invention
Any one display panel.
Compared with prior art, display panel of the invention and display device realize following advantageous effect：
The present invention provides a kind of new fingerprint recognition imaging system, the light source of fingerprint identification function is sent out in the present invention
Light is imaged after two secondary reflections on the surface of light-emitting surface side of the light sensitive device far from display panel.The present invention can realize
Embedded fingerprint identifies that light sensitive device is arranged below light emitting functional layer, and light sensitive device can be covered in the anode in display panel
Cover region setting it is sufficiently large or can also be overlapped with the non-anode area of coverage of part, the setting of light sensitive device is not by display surface
The limitation of the non-anode area of coverage of plate.And imaging, imaging system can be completed in the reflector element by being correspondingly arranged below light sensitive device
System is simple.
By referring to the drawings to the detailed description of exemplary embodiment of the present invention, other feature of the invention and its
Advantage will become apparent.
Description of the drawings
It is combined in the description and the attached drawing of a part for constitution instruction shows the embodiment of the present invention, and even
With its explanation together principle for explaining the present invention.
Fig. 1 is the schematic cross-section of display panel provided in an embodiment of the present invention；
Fig. 2 is organic luminescent device provided in an embodiment of the present invention and a kind of optional embodiment of light sensitive device position relationship
Schematic diagram；
Fig. 3 is a kind of schematic diagram of optional embodiment of display panel provided in an embodiment of the present invention；
Fig. 4 is first rough schematic view in the first section of display panel provided in an embodiment of the present invention；
Fig. 5 is second rough schematic view in the first section of display panel provided in an embodiment of the present invention；
Fig. 6 is the schematic cross-section of another optional embodiment of display panel that inventive embodiments provide；
Fig. 7 is that the lightproof unit of another optional embodiment of display panel provided in an embodiment of the present invention exposes light
The schematic diagram in face；
Fig. 8 is the schematic cross-section of another optional embodiment of display panel that inventive embodiments provide；
Fig. 9 is the film layer structure figure of array substrate in display panel provided in an embodiment of the present invention；
Figure 10 is another optional embodiment schematic cross-section of display panel provided in an embodiment of the present invention；
Figure 11 is another optional embodiment schematic cross-section of display panel provided in an embodiment of the present invention；
Figure 12 is the schematic diagram of display device provided in an embodiment of the present invention.
Specific embodiment
Carry out the various exemplary embodiments of detailed description of the present invention now with reference to attached drawing.It should be noted that：Unless in addition have
Body illustrates that the unlimited system of component and the positioned opposite of step, numerical expression and the numerical value otherwise illustrated in these embodiments is originally
The range of invention.
It is illustrative to the description only actually of at least one exemplary embodiment below, is never used as to the present invention
And its application or any restrictions that use.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as part of specification.
In shown here and discussion all examples, any occurrence should be construed as merely illustrative, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should be noted that：Similar label and letter represents similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, then in subsequent attached drawing does not need to that it is further discussed.
Fig. 1 is the schematic cross-section of display panel provided in an embodiment of the present invention.As shown in Figure 1, display panel, including：
Light emitting functional layer 101, light emitting functional layer 101 include multiple organic luminescent devices 1011, and organic luminescent device 1011 is included along vertical
Anode 10111, organic luminous layer 10112, the cathode 10113 directly stacked gradually in the direction of display panel；Multiple light sensitive devices
102 are located at display surface M side of the light emitting functional layer 101 far from display panel, and wherein display surface M is the touch table of display panel
Face, touch-surface realize that image shows, and user tangibly surface that user can realize after touching the surface for display panel
Fingerprint identification function, such as can be the outermost glass cover-plate of display panel light-emitting surface.Separate organic hair of light sensitive device 102
The surface of 1011 side of optical device is light-receiving surface 1021；Multiple reflector elements 103 are located at light sensitive device 102 far from light emitting functional layer
101 sides, reflector element 103 have multiple concave reflecting surfaces 1031, and concave reflecting surface 1031 is opposite with light-receiving surface 1021, and recessed
The concave side of shape reflecting surface 1031 is towards light-receiving surface 1021；With reference to the light path schematic diagram in figure 1, in the fingerprint recognition stage, You Jifa
The light that optical device 1011 is sent out is reflected via main body W is touched, then in light-receiving surface 1,021 1 after the reflection of concave reflecting surface 1031
Side is imaged, and realizes fingerprint recognition.Wherein, multiple reflector elements can be included in display panel, each reflector element is mutually solely
Vertical unit, multiple reflector elements in display panel may be the structure of a flood.It is utilized generally for guarantee light
Rate, 10111 lower section of anode need to set reflecting layer (not shown) so that light cannot penetrate anode 10111, can only be after reflection
It is emitted from the display surface of display panel.So display panel provided by the invention can be divided into the anode area of coverage (i.e. organic hair
Region where the anode of optical device) and the non-anode area of coverage, in the fingerprint recognition stage, organic luminescent device is as fingerprint recognition
The light source of function, the light that light source is sent out is after touching main body reflection, and after can only penetrating the non-anode area of coverage, it is single to be irradiated to reflection
On the concave reflecting surface of member, then it is irradiated on the light-receiving surface of light sensitive device after the reflection of concave reflecting surface.
In display panel provided by the invention, encapsulating structure, glass cover-plate are additionally provided in the top of light emitting functional layer 101
Etc. structures be not shown in Fig. 1, display panel further includes array substrate.Array substrate includes multiple thin film transistor (TFT)s, wherein thin
Film transistor includes active layer, grid, source electrode and drain electrode.Array substrate is multiple film layer stacked structure, including underlay substrate layer, half
Conductor active layer, gate metal layer, source-drain electrode metal layer and the insulating film layer being set between each metal layer.
Display panel provided by the invention can realize fingerprint identification function, below the light emitting functional layer of display panel
Light sensitive device is set, and the light-receiving surface of light sensitive device is the surface far from light emitting functional layer side, is set below light sensitive device anti-
Unit is penetrated, the light of reflector element reflection is irradiated on light-receiving surface, and in the fingerprint recognition stage, organic luminescent device is known as fingerprint
The light source of other function, after the light that organic luminescent device is sent out is via main body reflection is touched, then the concave reflecting surface through reflector element
It in reflected illumination to light-receiving surface, is imaged on light-receiving surface, realizes fingerprint recognition.The present invention provides a kind of new fingerprint recognition into
As system, the light source of fingerprint identification function is after two secondary reflections in the present invention, in light-emitting surface of the light sensitive device far from display panel
The surface imaging of side.The present invention can realize embedded fingerprint identifying system, and light sensitive device is arranged below light emitting functional layer,
Light sensitive device can the anode area of coverage of display panel set it is sufficiently large or can also be with the non-anode area of coverage of part
Overlapping, the setting of light sensitive device is not covered trivial limited by the non-anode of display panel.And it is set by correspondence below light sensitive device
Imaging can be completed in the reflector element put, and imaging system is simple.
In the fingerprint recognition stage, all organic luminescent devices of light emitting functional layer can serve as fingerprint identification function
Light source can also only have light source of the part organic luminescent device as fingerprint identification function.One reflector element is in light sensation
The orthographic projection of plane where device covers a light sensitive device or can also cover multiple light sensitive devices, such as a reflection
The orthographic projection of unit plane where light sensitive device covers four light sensitive devices.
It should be noted that can be produced on display panel accordingly original for light sensitive device and reflector element in the present invention
It is bonded in film layer structure or after light sensitive device and reflector element can also be fabricated separately with display panel, to realize display
The fingerprint identification function of panel.
In some optional embodiments, Fig. 2 is organic luminescent device provided in an embodiment of the present invention and light sensitive device
A kind of optional embodiment schematic diagram of position relationship.As shown in Fig. 2, an organic luminescent device 1011 is in 102 institute of light sensitive device
A light sensitive device 102 is covered in the orthographic projection of plane.In the display panel that the embodiment provides, an organic luminescent device
The orthographic projection of plane covers a light sensitive device where light sensitive device, and light sensitive device is located at the anode area of coverage of display panel,
Light through touching main body reflection can be irradiated to through the non-anode area of coverage on the concave reflecting surface of reflector element, light sensitive device
Setting is not take up the area of the anode area of coverage, increases the light quantity that light is irradiated on concave reflecting surface, is conducive to improve fingerprint
The precision of identification.Meanwhile the orthographic projection of organic luminescent device plane where light sensitive device covers a light sensitive device, makes
One pixel is corresponded with a light sensitive device, is conducive to the consistent of dot structure, is ensured the homogeneity of display effect.
In some optional embodiments, the orthographic projection of reflector element plane where light sensitive device covers one
Light sensitive device.Fig. 3 is a kind of schematic diagram of optional embodiment of display panel provided in an embodiment of the present invention, and Fig. 3 is display
Panel local overlooking schematic diagram illustrates only the projected position relationship of concave reflecting surface 1031 and light sensitive device 102, such as Fig. 3 institutes
Show, a concave reflecting surface 1031 covers a light sensitive device 102 in the orthographic projection of 102 place plane of light sensitive device.The implementation
Each light sensitive device only receives the light of concave reflecting surface reflection corresponding thereto in mode, in the meter of design fingerprint imaging system
It is relatively easy during calculation method, while the mutual crosstalk between light sensitive device is also prevented, improve fingerprint recognition accuracy.
Certainly, in other alternative embodiments of the present invention, the positive throwing of reflector element plane where light sensitive device
Shadow covers multiple light sensitive devices.The area that this kind of embodiment is equivalent to reflector element is bigger, in the fingerprint recognition stage, touches
The light amount ratio that main body is reflected on reflector element is more, can ensure that the light quantity that light sensitive device receives is more, it is accurate to improve fingerprint recognition
Exactness.
Further, in some optional embodiments, the spill of reflector element in display panel provided by the invention
Reflecting surface is a cambered surface, and middle concave reflecting surface of the present invention can follow concave mirror imaging law, can be imaged before concave mirror mirror,
I.e. concave reflecting surface receives touch the light that reflects back of main body after reflected, then the front of concave reflecting surface (i.e. with
On the opposite light-receiving surface of concave reflecting surface) imaging, avoid the light being reflected on concave reflecting surface be irradiated to after reflection by
Except smooth surface, mutual crosstalk between reflector element is avoided, while ensure that the light quantity for the reflected light that light sensitive device receives, is carried
The high accuracy of fingerprint recognition.
In display panel provided by the invention, in a light sensitive device, the light-receiving surface of light sensitive device includes photosensitive area, by
Smooth surface is surface opposite with concave reflecting surface in light sensitive device, and the light reflected through concave reflecting surface is irradiated on light-receiving surface.
Light-receiving surface can include photosensitive area and non-photo-sensing area using whole face as photosurface or light-receiving surface, wherein, only photosensitive area energy
It is imaged after enough receiving the light of concave reflecting surface reflection, is imaged namely is formed the fingerprint image for touching main body, it is possible to understand that, it is recessed
Shape reflecting surface can be a concave mirror, and concave reflecting surface has primary optical axis.Wherein, the primary optical axis of concave reflecting surface is with reference to concave mirror
Primary optical axis definition, primary optical axis along perpendicular to the direction of display panel plate face extend；Display panel include the first section, first
Section is perpendicular to the plate face of display panel, and the primary optical axis of concave reflecting surface is located on the first section, in practice display panel
There should be multiple first sections.Fig. 4 is that first simplification in the first section of display panel provided in an embodiment of the present invention is shown
It is intended to.The photosensitive area Q, concave reflecting surface 1031 corresponding with photosensitive area Q and display surface of a light sensitive device are illustrated only in Fig. 4
The touch-surface M of plate.As shown in figure 4, the primary optical axis Z of concave reflecting surface 1031 is located at the first section, on the first section：It is photosensitive
The center O of area Q is on primary optical axis Z, and the radius of curvature of the concave reflecting surface 1031 opposite with photosensitive area Q is R, then：
Wherein, v be distances of the vertex H of concave reflecting surface 1031 away from photosensitive area Q, u be display panel touch-surface M away from
The distance of photosensitive area Q.It should be noted that the definition in the first section is merely to clearly represent embodiment of the present invention
In, the calculation and feasibility of the photosensitive area size of concave reflecting surface and light sensitive device.
Specifically, on the first section, for u=1000 μm, u=200 μm, then concave reflecting surface is obtained by calculation
Radius of curvature R=333 μm, f=1/2R=167 μm of the focal length of concave reflecting surface, from the radius of curvature and coke of concave reflecting surface
From the point of view of data away from size, set the reflector element of this kind of specification feasibility in technique making higher in display panel, refer to
The imaging system of line identification function is easy to set up.
With continued reference to Fig. 4, the certain point blocked on recognizable region by touch main body can receive coming for multiple directions
The light sent out from organic luminescent device, the light from multiple directions can be along different directions after being reflected via the touch main body of the point
The different location of concave reflecting surface is reflected to, is then reflected by concave reflecting surface.Pass through middle concave reflecting surface of the present invention
Radius of curvature, distance of the touch-surface away from photosensitive area of distance and display panel of the vertex away from photosensitive area of concave reflecting surface
Meet：
The light that touch main body reflexes to concave reflecting surface can be made to meet concave mirror image-forming principle, make to touch
Touch main body be reflected into the light of concave reflecting surface different location converged to again by concave reflecting surface reflection it is same on photosensitive area
Position is imaged on photosensitive area, ensure to be irradiated to concave reflecting surface through touching the light of main body reflection in recognizable region
On, then through concave reflecting surface reflection light can full illumination arrive light sensitive device photosensitive area, ensure that touch main body exist
The integrality of the information of the fingerprint recognition detection in recognizable region, it is ensured that the accuracy of fingerprint identification function.、
In some optional embodiments, display panel provided by the invention includes multiple display pixels, and one aobvious
Show that pixel includes an organic luminescent device, wherein, a display pixel is as a display unit in display panel, display
Panel is divided into multiple display units.Assuming that a light sensitive device being correspondingly arranged below an organic luminescent device is known
When not touching the size of ranging from one display pixel, light sensation is all set below all organic luminescent devices in display panel
If device, the fingerprint recognition of entire viewing area can be realized, ensure that fingerprint recognition does not have blind area.As shown in figure 4, at first section
On face, on the direction of display panel is parallel to, the length of a display pixel is P, and the length of photosensitive area Q is L, then L meets：
For a light sensitive device, which can recognize that the size in region is related with the size of photosensitive area, light
The recognizable region of inductor component is the region that can be identified on touch-surface by the light sensitive device.In the embodiment, at first section
On face, when the length of photosensitive area is maximized in a light sensitive device, Petting Area on the identifiable display panel of the light sensitive device
Length of the length in domain for display pixel, Petting Area on the identifiable display panel of each light sensitive device in display panel
Length of the maximum value in domain for a display pixel.On the first section, the length of photosensitive area is less than or equal to most in light sensitive device
During big value, it can ensure that each light sensitive device can only identify that its fingerprint corresponded in the display pixel of top touches in display panel
It touches, the recognizable region of each light sensitive device does not overlap, and avoids the crosstalk between adjacent light sensitive device, ensure that fingerprint
The accuracy of identification.
Specifically, on the first section, u=1000 μm, u=200 μm, the length P of display pixel is 50 μm, can be calculated
The length on the direction of display panel is parallel to for going out photosensitive area Q is L≤8.33 μm, from the size of the photosensitive area of light sensitive device
From the point of view of data, set the light sensitive device of this kind of specification feasibility in technique making higher in display panel.
In other alternative embodiments of the application,
On the first section, the length of touch area is a display on each identifiable display panel of light sensitive device
The length of pixel avoids the crosstalk for the light that each light sensitive device receives, through touching in each display pixel length range
The light of main body reflection can be irradiated to photosensitive area after reflection, realize fingerprint detection, improve the light through touching main body reflection
The utilization rate of line；Meanwhile the embodiment can realize finger touch detectable region for viewing area all in display panel
Domain avoids check frequency, and fingerprint detection does not have missed point, ensure that the homogeneity of fingerprint detection.
In some optional embodiments, in display panel provided in an embodiment of the present invention, multiple light sensitive devices include
Adjacent the first light sensitive device and the second light sensitive device on the first section.Fig. 5 is display panel provided in an embodiment of the present invention
The first section second rough schematic view.Adjacent the first light sensitive device 1021 on the first section is illustrated only in Fig. 5
With the second light sensitive device 1022, with 1021 corresponding concave reflecting surface 10311 of the first light sensitive device and with the second light sensitive device
1022 corresponding concave reflecting surfaces 10312, the touch-surface M of display panel.
As shown in figure 5, on the first section：In first light sensitive device 1021, photosensitive area Q1It is being parallel to display panel
Length on direction is L1, the vertex H of concave reflecting surface 103111Distance away from photosensitive area is v1, the touch-surface M of display panel
Distance away from photosensitive area Q1 is u1, concave reflecting surface 10311 is with primary optical axis Z1；In second light sensitive device 1022, photosensitive area Q2
The length being parallel on the direction of display panel is L2, the vertex H of concave reflecting surface 103122Away from photosensitive area Q2Distance be v2,
The touch-surface M of display panel is away from photosensitive area Q2Distance be u2, concave reflecting surface 10312 is with primary optical axis Z2；Wherein, first
The photosensitive area Q of light sensitive device 10211With the photosensitive area Q of the second light sensitive device 10222The distance between D meet：
Optionally, L1=L2, u1=u2,v1=v2, at this point, the photosensitive area size of two adjacent light sensitive devices is identical, sense
The distance of light offset display panel touch-surface is equal, vertex of the photosensitive area away from concave reflecting surface is equal, then light sensitive device can be known
The touch area size of other display panel is identical, which improves the homogeneity of fingerprint detection precision, while is conducive to picture
Plain structure it is consistent
In display panel provided by the invention, including multiple light sensitive devices, the size of the photosensitive area of light sensitive device can phase
Same or different, a light sensitive device corresponds to a reflector element.Between the photosensitive area that each adjacent sensor devices are set
Distance meets above-mentioned condition, ensure that the light of reflector element reflection and can only be irradiated to the photosensitive area of corresponding light sensitive device
On, the mutual crosstalk between each light sensitive device is avoided, ensure that fingerprint recognition accuracy.
Certainly, in other alternative embodiments of the application, the photosensitive area Q of the first light sensitive device 10211With the second light sensation
The photosensitive area Q of device 10222The distance between
D=(L1u1)/2v1+ (L2u2)/2v2.
It can be irradiated to photosensitive area after reflection through touching the light of main body reflection in each display pixel length range,
It realizes fingerprint detection, improves the utilization rate of the light through touching main body reflection；It is meanwhile adjacent recognizable in the embodiment
Edges of regions can just be connected, and can realize that finger touch detectable region for display area all in display panel, is kept away
Check frequency is exempted from, fingerprint detection does not have missed point, ensure that the homogeneity of fingerprint detection.
It is each on the first section in display panel provided in an embodiment of the present invention in some optional embodiments
The photosensitive area same layer setting of light sensitive device, the length phase of the photosensitive area of each light sensitive device on the direction of display panel is parallel to
Together.In the embodiment, each light sensitive device in fingerprint recognition is applied in the setting of the photosensitive area same layer of each light sensitive device
The length of photosensitive area is identical, and each light sensitive device can complete when making in identical manufacturing process, simplify display
The manufacture craft of panel.Production parameter (position of photosensitive area and the size of photosensitive area) phase of each light sensitive device in display panel
Together, when setting fingerprint imaging system, then the parameter of the corresponding reflector element middle concave reflecting surface of each light sensitive device is also identical,
The homogeneity of fingerprint recognition detection is improved, reduces technology difficulty when display panel makes, while also reduces fingerprint knowledge
Operation difficulty during other imaging system detection.
In some optional embodiments, display panel provided in an embodiment of the present invention, at least one light sensitive device
In, the whole face of the light-receiving surface of light sensitive device is as photosensitive area.It, can be by light sensitive device far from organic light emission during display panel makes
The surface of layer is made to the photosensitive area for fingerprint imaging, and along on display panel direction, the size of photosensitive area is equal to
The size of light sensitive device, in order to ensure that light sensitive device is insensitive to light close to the surface of organic luminous layer side, light sensitive device exists
Along being needed on display panel direction with certain thickness, light sensitive device at least need to include film layer where photosensitive area with
The film layer insensitive to light on photosensitive area, the two film layer institute use production materials are different during making, at least one in the present invention
The whole face of the light-receiving surface of a light sensitive device is as photosensitive area, then the size for being equivalent to above-mentioned two film layer is identical, light sensitive device
Manufacture craft is relatively easy.
In some optional embodiments, Fig. 6 is the optional implementation of another kind for the display panel that inventive embodiments provide
The schematic cross-section of mode, Fig. 7 are the shading list of another optional embodiment of display panel provided in an embodiment of the present invention
The schematic diagram of member exposure light-receiving surface.As shown in fig. 6, further including light shield layer 104 in display panel provided in an embodiment of the present invention, hide
Photosphere 104 includes multiple lightproof units 1041, and lightproof unit 1041 is located at light-receiving surface 1021 close to 103 side of reflector element, such as
It shown in Fig. 7, is equivalent to as viewed from the direction of one lateral light sensitive device of reflector element, in a lightproof unit 1041 there are one tools
Through-hole K, light-receiving surface 1021 are photosensitive area Q by the region that through-hole K exposes, wherein, lightproof unit 1041 can be shown in fig. 7
Annulus shape may be other shapes.
When display panel makes, due to the restriction of photosensitive area size, in work when the photosensitive area of light sensitive device is fabricated separately
The bad control of precision is made in skill, and etching technics is used to make, ideal precision size can be reached, produce one first
Then light-shielding film layer etches the shape of lightproof unit, the size in the region of the through-hole exposure of lightproof unit using etching technics
It disclosure satisfy that the size requirements of the photosensitive area of light sensitive device.The display panel that the embodiment provides, the photosensitive area of light sensitive device
Ideal size can be reached, only increase by one of light shield layer when meeting the requirement of fingerprint recognition imaging system, and making and make
Technique, technical maturity are easy to operate.
Fig. 8 is the schematic cross-section of another optional embodiment of display panel that provides of inventive embodiments, in Fig. 8 only
The part-structure of display panel is shown, on the first section：On the direction of display panel is parallel to, lightproof unit 104
Length d is less than the length P of a display pixel in display panel.On the first section, the length of a lightproof unit is less than one
The length of a display pixel ensure that the light reflected by touch main body W, can be irradiated on concave reflecting surface, not by shading
Unit blocks.If lightproof unit length is too long, it is likely that shelters from the light that part is reflected by touch main body, causes finally to refer to
The light quantity of line identification is relatively low, influences the accuracy of fingerprint recognition.If the length of lightproof unit is too small, it is likely that influences optical flame detector
The size of the photosensitive area of part, and then influence accuracy of fingerprint identification.In practice, the length of lightproof unit is less than the length of display pixel
Degree, while also according to the length for the size design lightproof unit for being particularly shown photosensitive area in panel.
Fig. 9 is the film layer structure figure of array substrate in display panel provided in an embodiment of the present invention, as shown in figure 9, this hair
The display panel of bright offer further includes array substrate 106, and array substrate 106 includes semiconductor layer 1061, gate metal layer 1062
With source-drain electrode metal layer 1063, Fig. 9 only illustrates that array substrate includes above-mentioned film layer structure, and actual product is in above-mentioned each film layer
Between be also not shown in Figure 9 with insulating film layer.
Optionally, the light shield layer shown in Fig. 6 can be located at same film layer with gate metal layer or source-drain electrode metal layer.
During the pattern of etching grid metal layer or source-drain electrode metal layer, using same manufacturing process, the figure of lightproof unit is etched
Case, such setting without additionally increasing the film layer structure and manufacturing process of display panel, simplify technique, while meet aobvious
Show the requirement of panel slimming.
Optionally, the light sensitive device in display panel of the present invention can be with semiconductor layer or gate metal layer or source-drain electrode gold
Belong to layer and be located at same film layer.In the display panel that the embodiment provides, light sensitive device is produced on the original film layer of display panel
In structure, the embedded fingerprint identification method of display panel is realized, meets the requirement of display panel slimming.
In some optional embodiments, Figure 10 is the optional reality of another kind of display panel provided in an embodiment of the present invention
Mode schematic cross-section is applied, as shown in Figure 10, array substrate 106 further includes underlay substrate 1064, and underlay substrate 1064 is located at light
For inductor component 102 far from 1011 side of organic luminescent device, surface of the underlay substrate 1064 far from light sensitive device 102 is first surface
M1, first surface M1 have multiple convex structure T of direction protrusion for being directed away from light sensitive device, on the surface of convex structure T
It coats reflecting material and forms concave reflecting surface 1031.Wherein, the reflecting material of coating can be silver or other metal materials.The reality
It applies in mode, the light sensitive device in fingerprint recognition imaging system can be arranged in the film layer structure of array substrate, fingerprint recognition
Reflector element in imaging system can make by the surface of the original underlay substrate of array substrate, without increasing work in making
Skill processing procedure, it is simple for process.Do not need to additionally set other film layer structures or substrate, be conducive to display panel slimming it is same
When, it avoids and is bonded additional substrate generation contraposition deviation.
In some optional embodiments, Figure 11 is the optional reality of another kind of display panel provided in an embodiment of the present invention
Mode schematic cross-section is applied, as shown in figure 11, reflector element 103 is concave reflective mirror, and concave reflective mirror is viscous with array substrate 106
Knot is fixed, and the meaning of the drawing reference numeral in Figure 11 is referred to the explanation in the corresponding embodiments of Fig. 1.In the embodiment, show
When showing that panel makes, flood concave reflective lens array can be made, by the array substrate of concave reflective lens array and display panel
It is adhesively fixed, realizes that the orthographic projection of concave reflective mirror plane where light sensitive device covers a light sensitive device, Huo Zheye
Multiple light sensitive devices can be covered, such as the orthographic projection of concave reflective mirror plane where light sensitive device covers four light sensations
Device.In the embodiment, concave reflective lens array is directly adhesively fixed with array substrate, and the setting of concave reflective mirror does not increase
Difficulty in the manufacture craft of display panel, it is easy to implement.
The present invention also provides a kind of display device, including any one display panel provided by the invention.Figure 12 is this hair
The schematic diagram for the display device that bright embodiment provides.Display device provided by the invention, under the light emitting functional layer of display panel
Side's setting light sensitive device, the light-receiving surface of light sensitive device is the surface far from light emitting functional layer side, is set below light sensitive device
Reflector element, the light of reflector element reflection are irradiated on light-receiving surface, and in the fingerprint recognition stage, organic luminescent device is as fingerprint
The light source of identification function, after the light that organic luminescent device is sent out is via main body reflection is touched, then the concave reflective through reflector element
It in the reflected illumination to light-receiving surface of face, is imaged on light-receiving surface, realizes fingerprint recognition.The present invention realizes a kind of new fingerprint recognition
Imaging system, the present invention in fingerprint identification function light source after two secondary reflections, in light extraction of the light sensitive device far from display panel
The surface imaging of face side.In the present invention, light sensitive device is arranged below light emitting functional layer, and light sensitive device can be in display panel
The anode area of coverage setting it is sufficiently large or can also be overlapped with the non-anode area of coverage of part, the setting of light sensitive device is not
It is limited by the non-anode area of coverage of display panel, is conducive to set the imaging system of fingerprint recognition.
By above-described embodiment it is found that the display panel and display device of the present invention, have reached following advantageous effect：
The present invention provides a kind of new fingerprint recognition imaging system, the light source of fingerprint identification function is sent out in the present invention
Light is imaged after two secondary reflections on the surface of light-emitting surface side of the light sensitive device far from display panel.The present invention can realize
Embedded fingerprint identifies that light sensitive device is arranged below light emitting functional layer, and light sensitive device can be covered in the anode of display panel
Area setting it is sufficiently large or can also be overlapped with the non-anode area of coverage of part, the setting of light sensitive device is not by display panel
The limitation of the non-anode area of coverage.And imaging, imaging system can be completed in the reflector element by being correspondingly arranged below light sensitive device
Simply.
Although some specific embodiments of the present invention are described in detail by example, the skill of this field
Art personnel it should be understood that example above merely to illustrating, the range being not intended to be limiting of the invention.The skill of this field
Art personnel are it should be understood that can without departing from the scope and spirit of the present invention modify to above example.This hair
Bright range is defined by the following claims.
Claims (16)
1. a kind of display panel, which is characterized in that including：
Light emitting functional layer, the light emitting functional layer include multiple organic luminescent devices, and the organic luminescent device is included along vertical
In anode, organic luminous layer, cathode that the direction of the display panel stacks gradually；
Multiple light sensitive devices, positioned at display surface side of the light emitting functional layer far from the display panel, the light sensitive device
Surface far from the organic luminescent device side is light-receiving surface；
Multiple reflector elements, positioned at the light sensitive device far from the light emitting functional layer side, the reflector element has spill
Reflecting surface, the concave reflecting surface is opposite with the light-receiving surface, and the concave side of the concave reflecting surface is towards the light-receiving surface.
2. display panel according to claim 1, which is characterized in that
The orthographic projection of one organic luminescent device plane where the light sensitive device covers a light sensitive device.
3. display panel according to claim 1 or 2, which is characterized in that
The orthographic projection of one reflector element plane where the light sensitive device covers a light sensitive device.
4. display panel according to claim 3, which is characterized in that
The concave reflecting surface is a cambered surface.
5. display panel according to claim 4, which is characterized in that
In a light sensitive device, the light-receiving surface includes photosensitive area, and the photosensitive area is used to receive the concave reflective
It is imaged after the light of face reflection, the concave reflecting surface has primary optical axis, and the primary optical axis is along perpendicular to the display panel plate
The direction extension in face；
The display panel includes the first section, and the primary optical axis is located at first section, on first section：It is described photosensitive
The center in area is on the primary optical axis, and the radius of curvature of the concave reflecting surface opposite with the photosensitive area is R, then：
Wherein, v is distance of the vertex of the concave reflecting surface away from the photosensitive area, and u is the touch-surface of the display panel
Distance away from the photosensitive area.
6. display panel according to claim 5, which is characterized in that
The multiple light sensitive device is included in the first light sensitive device and the second light sensitive device adjacent on first section；
On first section：
In first light sensitive device, length of the photosensitive area on the direction of the display panel is parallel to is L1, it is described recessed
Distance of the vertex of shape reflecting surface away from the photosensitive area is v1, distance of the touch-surface of the display panel away from the photosensitive area
For u1；
In second light sensitive device, length of the photosensitive area on the direction of the display panel is parallel to is L2, it is described recessed
Distance of the vertex of shape reflecting surface away from the photosensitive area is v2, distance of the touch-surface of the display panel away from the photosensitive area
For u2；
Wherein, the distance between the photosensitive area of first light sensitive device and the photosensitive area of second light sensitive device D meet：
7. display panel according to claim 6, which is characterized in that on first section：Each optical flame detector
The photosensitive area same layer setting of part, and length of the photosensitive area of each light sensitive device on the direction of the display panel is parallel to
It spends identical.
8. display panel according to claim 5, which is characterized in that
The display panel includes multiple display pixels, and a display pixel includes an organic luminescent device；
On first section：On the direction of the display panel is parallel to, the length of a display pixel is P,
The length of the photosensitive area is L, then L meets：
9. display panel according to claim 5, which is characterized in that
In at least one light sensitive device, the whole face of the light-receiving surface is the photosensitive area.
10. display panel according to claim 5, which is characterized in that
The display panel further includes light shield layer, and the light shield layer includes multiple lightproof units, and the lightproof unit is located at described
Light-receiving surface has on the reflector element side a, lightproof unit there are one through-hole, and the light-receiving surface is led to by described
The region of hole exposure is the photosensitive area.
11. display panel according to claim 10, which is characterized in that
On first section：On the direction of the display panel is parallel to, the length of the lightproof unit is less than described
The length of a display pixel in display panel.
12. display panel according to claim 10, which is characterized in that
The display panel further includes array substrate, and the array substrate includes gate metal layer and source-drain electrode metal layer；It is described
Light shield layer is located at same film layer with the gate metal layer or the source-drain electrode metal layer.
13. display panel according to claim 1, which is characterized in that
The display panel further includes array substrate, and the array substrate includes semiconductor layer, gate metal layer and source-drain electrode gold
Belong to layer；
The light sensitive device is located at same film layer with the semiconductor layer or the gate metal layer or the source-drain electrode metal layer.
14. display panel according to claim 13, which is characterized in that
The array substrate further includes underlay substrate, and the underlay substrate is located at the light sensitive device far from the organic illuminator
Part side, surface of the underlay substrate far from the light sensitive device are first surface, and the first surface has multiple directions
The convex structure of direction protrusion far from the light sensitive device, the surface of the convex structure are coated with reflecting material, form institute
State concave reflecting surface.
15. display panel according to claim 13, which is characterized in that
The reflector element is concave reflective mirror, and the concave reflective mirror is adhesively fixed with the array substrate.
16. a kind of display device, which is characterized in that including claim 1 to 15 any one of them display panel.
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| CN201810001780.XA CN108258017B (en) | 2018-01-02 | 2018-01-02 | Display panel and display device |
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| CN201810001780.XA CN108258017B (en) | 2018-01-02 | 2018-01-02 | Display panel and display device |
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| CN108258017B CN108258017B (en) | 2021-05-14 |
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