CN109034089A - Display device and electronic equipment - Google Patents
Display device and electronic equipment Download PDFInfo
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- CN109034089A CN109034089A CN201810889192.4A CN201810889192A CN109034089A CN 109034089 A CN109034089 A CN 109034089A CN 201810889192 A CN201810889192 A CN 201810889192A CN 109034089 A CN109034089 A CN 109034089A
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- 230000003287 optical effect Effects 0.000 claims abstract description 100
- 239000000758 substrate Substances 0.000 claims description 25
- 238000010276 construction Methods 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 5
- 238000002310 reflectometry Methods 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 3
- 230000035807 sensation Effects 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 42
- 238000010586 diagram Methods 0.000 description 13
- 230000000694 effects Effects 0.000 description 9
- 239000010409 thin film Substances 0.000 description 9
- 230000006870 function Effects 0.000 description 6
- 239000002346 layers by function Substances 0.000 description 5
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 3
- 239000012790 adhesive layer Substances 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000002054 transplantation Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
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- 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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/10—Image acquisition
- G06V10/12—Details of acquisition arrangements; Constructional details thereof
- G06V10/14—Optical characteristics of the device performing the acquisition or on the illumination arrangements
- G06V10/145—Illumination specially adapted for pattern recognition, e.g. using gratings
-
- 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
- H10K59/40—OLEDs integrated with touch screens
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Theoretical Computer Science (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Optics & Photonics (AREA)
- Human Computer Interaction (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Electroluminescent Light Sources (AREA)
- Image Input (AREA)
Abstract
The invention discloses a display device and electronic equipment, wherein a fingerprint identification area is arranged, at least part of support columns are provided with first through holes penetrating through the support columns, an optical fingerprint sensor is arranged on the back surface of an O L ED display panel and is arranged opposite to the fingerprint identification area, so that an optical signal containing fingerprint information irradiates the optical fingerprint sensor through the first through holes, the path of the optical signal incident to the optical fingerprint sensor can be controlled through the first through holes, the crosstalk problem of a light sensing unit in the optical fingerprint sensor is avoided, and the fingerprint identification precision is improved.
Description
Technical field
The present invention relates to technical field of electronic equipment, more specifically, being related to a kind of display device and electronic equipment.
Background technique
With the continuous development of science and technology, more and more electronic equipments having a display function are widely used in
In daily life and work, huge convenience is brought for daily life and work, becomes current
The indispensable important tool of people.
The function of electronic equipment is become stronger day by day, and the personal information of storage is more and more, also more and more important, in order to guarantee
The safety of personal information, electronic equipment are needed with identity recognition function, and fingerprint recognition mode is with highly-safe and use
The advantages that facilitating carries out the main way of identification as current electronic device.
Electronic equipment realizes that the main component of display function is display panel.OLED display panel is current a kind of common aobvious
Show panel.In OLED display panel when integrating fingerprint identification function, a kind of mode is integrated at the back side of OLED display panel
Optical fingerprint sensor when carrying out fingerprint recognition, passes through the hand for the optical signal irradiation pressing fingerprint identification area that OLED display issues
Refer to, optical fingerprint sensor passes through the light signal collection fingerprint image that reflects based on fingerprint.
Optical fingerprint sensor has multiple photo cells, for finger-print region reflection right above acquisition zone optical signal with
The fingerprint image in the region is formed, the photo cell is easy the interference of the reflected light signal by other regions of finger, causes
Fingerprint recognition precision is poor.
Summary of the invention
To solve the above-mentioned problems, technical solution of the present invention provides a kind of display device and electronic equipment, can keep away
Exempt from photosensitive unit cross-interference issue in optical fingerprint sensor, improves the precision of fingerprint recognition.
To achieve the goals above, the invention provides the following technical scheme:
A kind of display device, the display device include:
OLED display panel, the OLED display panel include multiple array arrangements OLED pixel and multiple supports
Column, the support column are at most arranged between the two neighboring OLED pixel, and between the two neighboring OLED pixel
One support column；At least partly viewing area of the OLED display panel is fingerprint identification area, the fingerprint identification area tool
There are multiple OLED pixels and multiple support columns；In the fingerprint identification area, at least partly described support column is in institute
State the first through hole having on first direction through the support column；
Optical fingerprint sensor, in said first direction, the optical fingerprint sensor and the fingerprint identification area phase
To setting, the optical signal comprising finger print information irradiates the optical fingerprint sensor, the first party by the first through hole
To perpendicular to the OLED display panel.
Preferably, in above-mentioned display device, a part of viewing area is the fingerprint identification area；
Another part viewing area is non-fingerprint identification area, and the support column in the non-fingerprint identification area is solid construction；
The density of support column in the fingerprint identification area is greater than the density of the support column in the non-fingerprint identification area.
Preferably, in above-mentioned display device, in the fingerprint identification area, between two OLED pixels of arbitrary neighborhood
It is provided with the support column.
Preferably, in above-mentioned display device, the OLED display panel has array substrate, and the OLED pixel is located at
The array substrate deviates from the side of the optical fingerprint sensor；
The array substrate has transparent substrate, and the transparent substrate is arranged away from the side of the optical fingerprint sensor
There is TFT element；
The TFT element is provided with planarization layer away from the side of the transparent substrate；
The planarization layer is provided with pixel defining layer away from the side of the TFT element, and the pixel defining layer has
It is multiple with the one-to-one open area of the OLED pixel, be used to that the OLED pixel be arranged in the open area；
Wherein, in said first direction, the region that the pixel defining layer corresponds to the first through hole is provided with second
Through-hole, and/or, the region that the planarization layer corresponds to the first through hole is provided with third through-hole.
Preferably, in above-mentioned display device, the first through hole is square hole or circular hole.
Preferably, in above-mentioned display device, the support column is cylinder or prism or truncation centrum；
Wherein, the truncation centrum is greater than it towards the surface of the optical fingerprint sensor and passes away from the optical finger print
The surface of sensor.
Preferably, in above-mentioned display device, the optical fingerprint sensor has multiple photo cells；
In said first direction, the corresponding first through hole of each photo cell.
Preferably, in above-mentioned display device, in the fingerprint identification area, two pixel units of arbitrary neighborhood it
Between be correspondingly arranged the photo cell；
Or, in the fingerprint identification area, on the column direction of array between two pixel units of arbitrary neighborhood
It is correspondingly arranged the photo cell；
Or, in the fingerprint identification area, on the line direction of array between two pixel units of arbitrary neighborhood
It is correspondingly arranged the photo cell.
Preferably, in above-mentioned display device, the support column is opaque, and reflectivity is greater than 80%.
Preferably, in above-mentioned display device, on the direction for being parallel to the OLED display panel, the first through hole
Pore diameter range be 150 μm -250 μm.
The present invention also provides a kind of electronic equipment, the electronic equipment includes display device described in any of the above embodiments.
As can be seen from the above description, in the display device and electronic equipment that technical solution of the present invention provides, fingerprint is set
In cog region, at least partly described support column has the first through hole through the support column, at the back side of OLED display panel
Optical fingerprint sensor is set, and the optical fingerprint sensor is oppositely arranged with the fingerprint identification area, is believed in this way comprising fingerprint
The optical signal of breath irradiates the optical fingerprint sensor by the first through hole, can be by described in first through hole control
The path of the incidence optical fingerprint sensor of optical signal, avoids photosensitive unit cross-interference issue in optical fingerprint sensor, mentions
The precision of high fingerprint recognition.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of structural schematic diagram of display device for being integrated with optical fingerprint sensor；
Fig. 2 is a kind of structural schematic diagram of display device provided in an embodiment of the present invention；
Fig. 3 is a kind of OLED pixel of display device provided in an embodiment of the present invention and the top view of support column；
Fig. 4 is the structural schematic diagram of another display device provided in an embodiment of the present invention；
Fig. 5 is the structural schematic diagram of another display device provided in an embodiment of the present invention；
Fig. 6 is the structural schematic diagram of another array substrate provided in an embodiment of the present invention；
Fig. 7 is a kind of working principle signal of driving circuit provided in an embodiment of the present invention；
Fig. 8 is the structural schematic diagram of a kind of electronic equipment provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
With reference to Fig. 1, Fig. 1 is a kind of structural schematic diagram of display device for being integrated with optical fingerprint sensor, aobvious in OLED
Show the back side integrated optics fingerprint sensor 12 of panel 11, in this way, relative to traditional capacitive fingerprint sensing device, without aobvious
Show that place capacitive fingerprint sensing device, screen accounting is can be improved in panel surface setting opening.
There is colimated light system 15, which can be light between optical fingerprint sensor 12 and OLED display panel 11
Fine panel FOP (fiber optic plates).The upper surface of colimated light system 15 is shown by one layer of optical cement OCA1 and OLED
Panel 11 is adhesively fixed, and lower surface is adhesively fixed by another layer of optical cement OCA2 with optical fingerprint sensor.The optics refers to
Line sensor 12 is bundled on circuit board 19 away from the side of 11 light-emitting surface of OLED display panel.The display device passes through encapsulation
18 seal protection colimated light system 15 of glue and optical fingerprint sensor 12.
Multiple OLED pixels 13 that OLED display panel has array substrate 10 and is arranged in array substrate 10.Array
Substrate 10 is including transparent substrate 101 and driving of the transparent substrate 101 away from 12 side of optical fingerprint sensor is arranged in
Circuit, the driving circuit include multiple thin film transistor (TFT) TFT.The thin film transistor (TFT) TFT includes grid G, source S and leakage
Pole D.The lower end of source S and drain D is connect with active area 102.OLED pixel 13 includes the anode set gradually from the bottom to top
131, light emitting functional layer 132 and cathode 133.The anode 131 of all OLED pixels 13 is absolute construction, and cathode 133 is same
Transparent electrode layer.The anode 131 of each OLED pixel 13 is individually correspondingly connected with the source S of a thin film transistor (TFT) TFT.
Pixel defining layer PDL is provided in array substrate 10, for dividing multiple pixel regions, each pixel region is for being arranged
The anode 131 and light emitting functional layer 132 of one OLED pixel 13.Support column PS, support column are provided on pixel defining layer PDL
PS is on the pixel defining layer PDL between adjacent pixel area.It is used to support cover board 161.
Optical fingerprint sensor 12 has multiple photo cells 14.When acquiring fingerprint image, finger 17 touches OLED and shows
The region of the 16 face optical fingerprint sensor 12 of cover board of panel 11, the OLED pixel 13 in the region are emitted optical signal and are irradiated to
Finger 17 passes sequentially through OLED display panel 11 and 15 beam incident optical fingerprint sensor 12 of colimated light system after being reflected by finger 17
Photo cell 14, and then fingerprint image is formed by photo cell 14.
Ideally, each acquisition of photo cell 14 optical signal that the upright finger 17 to position reflects thereon, with shape
It is unable to accurately control at the fingerprint image of the Toe Transplantation for Segmental Finger, but as indicated by the dashed arrow in fig. 1, in display device incident each
The direction of propagation of the optical signal of photo cell 14, therefore the optical signal of the Toe Transplantation for Segmental Finger reflection of 14 face of photo cell can be incident
To another photo cell 14, to influence the precision of fingerprint recognition to another 14 noise crosstalk interference of photo cell.
To solve the above-mentioned problems, technical solution of embodiment of the present invention embodiment provides a kind of display device and electronics
Equipment, technical solution of the present invention embodiment are arranged in fingerprint identification area, and at least partly described support column, which has, runs through the support
The first through hole of column, OLED display panel the back side be arranged optical fingerprint sensor, the optical fingerprint sensor with it is described
Fingerprint identification area is oppositely arranged, and the optical signal comprising finger print information irradiates the optical finger print by the first through hole and passes in this way
Sensor can control the path of the incidence optical fingerprint sensor of the optical signal by the first through hole, avoid light
Photosensitive unit cross-interference issue in fingerprint sensor is learned, the precision of fingerprint recognition is improved.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
With reference to Fig. 2, Fig. 2 is a kind of structural schematic diagram of display device provided in an embodiment of the present invention, the display device packet
It includes: OLED display panel 21 and optical fingerprint sensor 22.OLED display panel has the display surface and back being oppositely arranged
Face.Wherein, optical fingerprint sensor 22 is located at the back side of OLED display panel.
The OLED display panel 21 includes the OLED pixel 23 and multiple support columns 31 of multiple array arrangements, the branch
Dagger 31 is at most arranged one between the two neighboring OLED pixel 23, and between the two neighboring OLED pixel 23
The support column 31；At least partly viewing area of the OLED display panel is fingerprint identification area, and the fingerprint identification area has
Multiple OLED pixels 23 and multiple support columns 31；In the fingerprint identification area, at least partly described support column 31
There is the first through hole 32 through the support column 31 in said first direction；The first direction is aobvious perpendicular to the OLED
Show panel 21.In said first direction, the optical fingerprint sensor 22 is oppositely arranged with the fingerprint identification area, comprising referring to
The optical signal of line information irradiates the optical fingerprint sensor 22 by the first through hole 32.
In display device described in the embodiment of the present invention, light can be controlled by the first through hole 32 being arranged in support column 31
Signal propagation path, so that 1. the optical signal of low-angle incidence is irradiated to the correspondence photo cell of optical fingerprint sensor 22
24, and the optical signal of large angle incidence 2. blocking due to support column and OLED pixel 23, other photo cells will not be incident on
24, avoid the cross-interference issue of different photo cells 24 in optical fingerprint sensor 22.Particularly, hollow in the display device
First through hole 31 relative to tangible media layer transmitance with higher, the strong of incident 24 optical signal of photo cell can be improved
Degree improves fingerprint recognition precision.
The optical fingerprint sensor has multiple photo cells 24；In said first direction, each light sensation list
The corresponding first through hole 32 of member 24.Vertical face is arranged the photosensitive unit 24 one by one with the first through hole 32, often
The optical signal of the low-angle incidence of a photo cell 24 available area just above reflection, avoids the region large angle incidence
Optical signal other photo cells 24 of incidence or the incident photo cell 24 of the wide-angle optical signal of other regions reflection, to keep away
Exempt from the cross-interference issue of different photo cells 24 in optical fingerprint sensor 22.
It is right between the pixel unit 23 of two of arbitrary neighborhood in the fingerprint identification area in the display device
One photo cell 31 should be set；Or, in the fingerprint identification area, two institutes of arbitrary neighborhood on the column direction of array
It states and is correspondingly arranged the photo cell 31 between pixel unit 23；Or, in the fingerprint identification area, in the row side of array
The photo cell 31 is correspondingly arranged between two pixel units 23 of upward arbitrary neighborhood.It can be according to support
The quantity and distribution mode of support column 31 is arranged in effect demand, so that support column 31 has preferable support in display device
Effect.
Photo cell 24 is arranged on 28 surface of a circuit board, and is arranged towards OLED display panel 21.Optical finger print sensing
There is colimated light system 25, which can be fibre faceplate FOP between device 22 and OLED display panel 21.Carry out fingerprint
When acquisition, finger 27 touches the cover board 26 of OLED display panel 21, and the optical signal that finger 27 reflects is incident by first through hole 32
To the photo cell 24 of underface.The upper surface of colimated light system 25 is solid by optical adhesive layer OCA1 and the bonding of OLED display panel 21
Fixed, lower surface bonds Gu Ding by another optical adhesive layer OCA2 and optical fingerprint sensor 22.Optical fingerprint sensor 22 with
There is encapsulation glue-line 400 between OLED display panel 21, sealed for collimation system 24 and optical fingerprint sensor 22
Dress protection.
As it can be seen that at least partly described support column 31, which has, to be passed through in technical solution of the present invention embodiment setting fingerprint identification area
Optical fingerprint sensor 22, the optics is arranged at the back side of OLED display panel 21 in the first through hole 32 for wearing the support column
Fingerprint sensor 22 is oppositely arranged with the fingerprint identification area, and the optical signal comprising finger print information passes through the first through hole in this way
The 32 irradiation optical fingerprint sensors 22 can control the incidence optics of the optical signal by the first through hole 32
The path of fingerprint sensor 22 avoids 24 cross-interference issue of photosensitive unit in optical fingerprint sensor 22, improves the essence of fingerprint recognition
Degree.
It is the fingerprint identification area that the part viewing area, which can be set, and it is fingerprint recognition that entire viewing area, which also can be set,
Area.In the embodiment of the present invention, it is preferred that setting unit viewing area is fingerprint identification area, in this way, lesser size can be used
The predeterminable area at the display device back side is arranged in optical fingerprint sensor 22, in the display area fix position fingerprint identification area into
Row fingerprint collecting and identification.
With reference to Fig. 3, Fig. 3 is a kind of OLED pixel of display device provided in an embodiment of the present invention and the vertical view of support column
Scheme, in which, part viewing area 33 includes fingerprint identification area 34, and it is the fingerprint recognition 34 that a part of viewing area 33, which is arranged,.
Another part viewing area is non-fingerprint identification area 35.Position of the fingerprint identification area 34 in viewing area 33 can be set according to demand
33, its center for being located at viewing area 33 or upper end or lower end or any top corner regions can be set.
Support column 31 in the non-fingerprint identification area 35 is solid construction, to guarantee the support in non-fingerprint identification area 35
Column 31 has preferable mechanical strength, to guarantee preferable support effect.
Since first through hole 32 is arranged in support column 31, the support column of support column 31 and solid construction with first through hole 32
31 compare, and support effect is weaker, therefore the density for the support column 31 being arranged in the fingerprint identification area 34 is greater than the non-fingerprint and knows
The density of 35 support column 31 in other area, in this way, increasing fingerprint by the density for increasing 34 inner support column 31 of fingerprint identification area and knowing
The support effect of all support columns 31 in other area 34 can overcome due to the setting of support column 31 first in the fingerprint identification area 34
The problem of support effect caused by through-hole 32 weakens.
In order to guarantee the integrated support effect of the support column 31 in fingerprint identification area 34 to the greatest extent, can be set described
In fingerprint identification area 34, the support column 31 is provided between arbitrary neighborhood two OLED pixels 23.Namely
It says, in the fingerprint identification area 34, on line direction, two OLED pixels 23 of arbitrary neighborhood are provided with the support column
31, on column direction, two OLED pixels 23 of arbitrary neighborhood are provided with the support column 31.
In other modes, under the premise of meeting support effect, in the fingerprint identification area 34, a part can be only set
The support column 31 is provided between the OLED pixel 23 of adjacent two, described in adjacent two of another part
The support column 31 is not provided between OLED pixel 23.In order to guarantee the support column in fingerprint identification area 34 to the greatest extent
31 integrated support effect improves fingerprint recognition precision and reduces the area of optical fingerprint sensor 22, the fingerprint is arranged
All support columns 31 all have the first through hole 32 in cog region 34, and arbitrary neighborhood two in the fingerprint identification area 34 is arranged
The support column 31 is provided between a OLED pixel 23.
As shown in Fig. 2, the OLED display panel 21 has array substrate 29, the OLED pixel 23 and the support
Column 31 is respectively positioned on the surface that the array substrate 29 deviates from 22 side of optical fingerprint sensor.
OLED pixel 23 has anode 231, light emitting functional layer 232 and cathode 233.The anode of each OLED pixel 23
231 be absolute construction, and the cathode 233 of all OLED pixels 23 is same layer cathode layer, is common cathode structure.The cathode layer is corresponding
32 position of first through hole of support column 31 is engraved structure, in order to which light passes through.The anode 231 of OLED pixel 23 is located at flat
Change 292 surface of layer, the via hole by being located at planarization layer 292 is connected with the source S of corresponding thin film transistor (TFT) TFT.Pixel is fixed
Adopted layer 293 is located at the side surface that anode 231 deviates from planarization layer 292, and has in pixel region and be used for exposed portion anode 293
Groove, in the groove formed light emitting functional layer 232.It is fixed that cathode layer covers light emitting functional layer 232, support column 31 and pixel
Adopted layer 293, and there is hollowed out area in the position of corresponding first through hole 32.
In display device described in the embodiment of the present invention, array substrate 29 has transparent substrate 291, and transparent substrate 291 deviates from
The side of optical fingerprint sensor 22 is provided with multiple thin film transistor (TFT) TFT to connect one to one with OLED pixel 23.Film
The surface transistor TFT is covered with planarization layer 292.Planarization layer 292 is covered with picture away from a side surface of thin film transistor (TFT) TFT
Plain definition layer 293.For dividing multiple pixel regions, each pixel region is used to form described in one pixel defining layer 293
OLED pixel 23.
Thin film transistor (TFT) TFT includes polycrystalline silicon active area 33, grid G, source S and drain D.Thin film transistor (TFT) TFT is
Top gate structure, polycrystalline silicon active area 33 are located at transparent substrate 291 away from 22 side of optical fingerprint sensor, 33 table of active area
Face is covered with gate insulation layer, and gate electrode insulation surface is provided with grid G, and grid G surface is covered with insulating medium layer, insulating medium layer
Surface is provided with source S and drain D, and source S and drain D are connect by via hole with polycrystalline silicon active area 33.Source S and drain D
It is covered with the pixel defining layer 293.
With reference to Fig. 4, Fig. 4 is the structural schematic diagram of another display device provided in an embodiment of the present invention, mode described in Fig. 4
It is with mode difference shown in Fig. 2, it is in said first direction, described in the lower section of support column 32 in mode shown in Fig. 4
The region of the corresponding first through hole 32 of pixel defining layer 293 is provided with the second through-hole 294, and the planarization layer 292 is corresponding
The region of the first through hole 32 is provided with third through-hole 295.The aperture of the second through-hole 294 and third through-hole 295 can be set
It is identical as the aperture of first through hole 32, it can also be different in other modes.
The pixel defining layer 293 all has certain light transmission rate with the planarization layer 292, but the two believes light
Number absorptivity it is higher.In which, the optical signal that can increase into first through hole 32 reaches the strong of setting photosensitive unit 24
Degree reduces the absorption of the pixel defining layer 293 and the planarization layer 292 to the part optical signals, improves fingerprint recognition
Precision, if the transmitance of pixel defining layer 293 is 30% or so, by the way that the second through-hole 294 is arranged in pixel defining layer 293,
It can be made to reach 100% in the position transmitance of the second through-hole 294.
In other modes, also it can be set as shown in figure 5, Fig. 5 is another display device provided in an embodiment of the present invention
Structural schematic diagram, mode described in Fig. 5 is with mode difference shown in Fig. 2, in mode shown in Fig. 5, in said first direction,
The region that the corresponding first through hole 32 of the pixel defining layer 293 is arranged is provided with the second through-hole 294.Second through-hole 294
Shape can be identical or different as the shape of first through hole 31.
In other modes, also it can be set as shown in fig. 6, Fig. 6 is another display device provided in an embodiment of the present invention
Structural schematic diagram, mode described in Fig. 5 is with mode difference shown in Fig. 2, and in Fig. 5, in said first direction, setting is stated flat
The region of the corresponding first through hole 32 of smoothization layer 292 is provided with third through-hole 295.The shape of third through-hole 295 can be with
The shape of one through-hole 31 is identical or different.
In other modes, light can be improved by reducing the pixel defining layer 293 and the thickness of the planarization layer 292
The transmitance of signal.
In the embodiment of the present invention, the shape of first through hole 31 can be set according to demand, first through hole 31 can for square hole,
The shapes such as circular hole or delthyrium.On the direction for being parallel to the OLED display panel, the hole of the first through hole 31
Diameter range is 150 μm -250 μm.
In general finger print, the width L1 of crestal line is 200 μm -400 μm, and the width L2 of valley line is 150 μm -250 μm.
The pore diameter range that first through hole 31 is arranged is adapted to valley line width, on the one hand can promote transmitance, on the other hand can be stopped adjacent
Crosstalk occurs for region reflected light, to promote fingerprint recognition precision, it is preferred that the aperture that the first through hole 31 can be set is
200μm。
Optionally, the support column 31 can be cylindrical or prism or truncation centrum.When the support column is truncation
When centrum, the truncation centrum is greater than it towards the surface of the optical fingerprint sensor 22 and deviates from the optical fingerprint sensor
22 surface, the preparation of column 31 easy to support in this way.
In order to avoid wide-angle oblique incident ray signal to cause crosstalk between different photosensitive units 24 to the greatest extent, it is arranged
Support column 31 is opaque, and its reflectivity is greater than 80%, largely to stop and reflect the optical signal of wide-angle oblique incidence.
And 32 inner wall reflectivity of first through hole is higher, can be incident on first through hole 31 and irradiate its side wall optical signal it is downward
Reflection improves accuracy of identification so that the optical signal of higher-strength is incident on photosensitive unit 24.
The OLED display panel 21 has display driver circuit, and the display driver circuit is for driving the OLED picture
Element 23 performs image display.The driving circuit includes the thin film transistor (TFT) TFT.It is acquired in the optical fingerprint sensor 22
When fingerprint image, the position that the display driver circuit is also used to that the array of display is driven to correspond to the fingerprint identification area is shown
Pre-set image, to show the position of the fingerprint identification region.The position of fingerprint identification region is determined convenient for user in this way, so as to
In progress fingerprint collecting.
With reference to Fig. 7, Fig. 7 is a kind of operation principle schematic diagram of driving circuit provided in an embodiment of the present invention, and the present invention is real
It applies in the example display device, OLED display panel 21 has the OLED pixel 23 of multiple array arrangements, shows one in Fig. 7
It is located at the OLED pixel 232 of non-fingerprint identification area positioned at the OLED pixel 231 of fingerprint identification area and one.
The driving circuit has multiple pixel circuits 51 to connect one to one with the OLED pixel 23, the pixel
Circuit 51 is used to obtain the display data signal DATA1 of control chip IC, controls company of institute based on the display data signal DATA1
The OLED pixel connect shows image to be displayed.As shown in figure 5, the pixel that OLED pixel 232 connects is electric when normal display
The pixel circuit 512 that road 511 and OLED pixel 231 connect obtains the display data signal DATA1 that control IC is sent, with respectively
It controls connected OLED pixel 231 and OLED pixel 232 and shows image to be displayed.
The pixel circuit 51 connected positioned at the OLED pixel 23 of the fingerprint identification area is also used to know with fingerprint
It does not invite when asking, obtains the fixed data signal DATA2 that the control chip IC is sent, be based on the fixed data signal DATA2
It controls the OLED pixel 23 connected and shows the pre-set image.When OLED pixel unit is normally shown, chip is controlled
512 open circuit of IC and pixel circuit generates control signal and is used for so that control chip IC and picture when requesting with fingerprint recognition
Plain circuit 512 is connected, and then provides fixed data-signal DATA2 for the OLED pixel 231 of fingerprint identification area, default to show
Image.At this point, control chip IC only provides fixed data signal DATA2 to pixel circuit 512, to the OLED of non-fingerprint identification area
Pixel 232 normally provides display data signal DATA1, so that the OLED pixel 232 of non-fingerprint identification area normally shows image.
The fixed data signal DATA2 makes the OLED231 pixel in fingerprint identification area relative to the OLED in non-fingerprint identification area
The display brightness of pixel 232 increases or reduces, to show the pre-set image.
Control chip IC can directly export the fixed data signal DATA2 to the pixel circuit 512, can also be with
Fixed data signal DATA2 is exported by FPC, the fixed data signal DATA2 is exported to the pixel circuit by FPC
512。
The display device is used for electronic equipment.The pre-set image is hidden icons, when its display for showing fingerprint
The position of identification region.When user inputs fingerprint collecting trigger signal, driving circuit is for driving in fingerprint identification region
OLED pixel shows the pre-set image.The fingerprint collecting trigger signal can be inputted by the mechanical key of electronic equipment.Or
Input when being the touch-control icon of user's triggering OLED display panel.When obtaining the fingerprint collecting trigger signal, the control
Chip generates the control signal.
As can be seen from the above description, in display device described in the embodiment of the present invention, the support column of specific structure can be passed through
31 control lightray propagation paths, prevent occurring cross-interference issue between different photosensitive units 24, high fingerprint recognition precision, by logical
Hole design can also improve the transmitance of the optical signal for fingerprint recognition, further increase fingerprint recognition precision.
Based on the above embodiment, another embodiment of the present invention additionally provides a kind of electronic equipment, the electronic equipment such as Fig. 8 institute
Show, Fig. 8 is the structural schematic diagram of a kind of electronic equipment provided in an embodiment of the present invention, which includes above-described embodiment institute
The display device 41 stated.The electronic equipment can be that mobile phone, tablet computer or wearable electronic etc. have display function
The electronic equipment of energy.
Electronic equipment described in the embodiment of the present invention is internally integrated optical finger print using display device described in above-described embodiment
Sensor can improve fingerprint recognition precision to avoid the cross-interference issue between different photosensitive units.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.For electronics disclosed in embodiment
For equipment, since it is corresponding with display device disclosed in embodiment, so being described relatively simple, related place is referring to aobvious
Showing device corresponding portion explanation.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (11)
1. a kind of display device, which is characterized in that the display device includes:
OLED display panel, the OLED display panel include the OLED pixel and multiple support columns of multiple array arrangements, institute
Support column is stated between the two neighboring OLED pixel, and an institute is at most set between the two neighboring OLED pixel
State support column；At least partly viewing area of the OLED display panel is fingerprint identification area, and the fingerprint identification area has multiple
The OLED pixel and multiple support columns；In the fingerprint identification area, at least partly described support column is described first
There is the first through hole through the support column on direction；
Optical fingerprint sensor, in said first direction, the optical fingerprint sensor is opposite with the fingerprint identification area to be set
It sets, the optical signal comprising finger print information irradiates the optical fingerprint sensor by the first through hole, and the first direction hangs down
Directly in the OLED display panel.
2. display device according to claim 1, which is characterized in that a part of viewing area is the fingerprint identification area；
Another part viewing area is non-fingerprint identification area, and the support column in the non-fingerprint identification area is solid construction；
The density of support column in the fingerprint identification area is greater than the density of the support column in the non-fingerprint identification area.
3. display device according to claim 1, which is characterized in that in the fingerprint identification area, two institutes of arbitrary neighborhood
It states and is provided with the support column between OLED pixel.
4. display device according to claim 1, which is characterized in that the OLED display panel has array substrate, institute
It states OLED pixel and is located at the side that the array substrate deviates from the optical fingerprint sensor；
The array substrate has transparent substrate, and the transparent substrate is provided with away from the side of the optical fingerprint sensor
TFT element；
The TFT element is provided with planarization layer away from the side of the transparent substrate；
The planarization layer is provided with pixel defining layer away from the side of the TFT element, and the pixel defining layer has multiple
With the one-to-one open area of the OLED pixel, for the OLED pixel to be arranged in the open area；
Wherein, in said first direction, the region that the pixel defining layer corresponds to the first through hole is provided with the second through-hole,
And/or the planarization layer corresponds to the region of the first through hole and is provided with third through-hole.
5. display device according to claim 1, which is characterized in that the first through hole is square hole or circular hole.
6. display device according to claim 1, which is characterized in that the support column is cylinder or prism or truncation vertebra
Body；
Wherein, the truncation centrum is greater than it towards the surface of the optical fingerprint sensor and deviates from the optical fingerprint sensor
Surface.
7. display device according to claim 1, which is characterized in that the optical fingerprint sensor has multiple light sensation lists
Member；
In said first direction, the corresponding first through hole of each photo cell.
8. display device according to claim 7, which is characterized in that in the fingerprint identification area, two of arbitrary neighborhood
The photo cell is correspondingly arranged between the pixel unit；
Or, in the fingerprint identification area, it is corresponding between two pixel units of arbitrary neighborhood on the column direction of array
One photo cell is set；
Or, in the fingerprint identification area, it is corresponding between two pixel units of arbitrary neighborhood on the line direction of array
One photo cell is set.
9. display device according to claim 1, which is characterized in that the support column is opaque, and reflectivity is greater than
80%.
10. display device according to claim 1, which is characterized in that in the direction for being parallel to the OLED display panel
On, the pore diameter range of the first through hole is 150 μm -250 μm.
11. a kind of electronic equipment, which is characterized in that the electronic equipment includes such as the described in any item displays of claim 1-7
Device.
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| CN201810889192.4A CN109034089B (en) | 2018-08-07 | 2018-08-07 | Display device and electronic equipment |
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| CN201810889192.4A CN109034089B (en) | 2018-08-07 | 2018-08-07 | Display device and electronic equipment |
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