CN109309117A - Sensing heart rate display device and intelligent wearable device - Google Patents
Sensing heart rate display device and intelligent wearable device Download PDFInfo
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- CN109309117A CN109309117A CN201811152354.2A CN201811152354A CN109309117A CN 109309117 A CN109309117 A CN 109309117A CN 201811152354 A CN201811152354 A CN 201811152354A CN 109309117 A CN109309117 A CN 109309117A
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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
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/024—Detecting, measuring or recording pulse rate or heart rate
- A61B5/02438—Detecting, measuring or recording pulse rate or heart rate with portable devices, e.g. worn by the patient
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/6802—Sensor mounted on worn items
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- A—HUMAN NECESSITIES
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- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/74—Details of notification to user or communication with user or patient ; user input means
- A61B5/742—Details of notification to user or communication with user or patient ; user input means using visual displays
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- 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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- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
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Abstract
The embodiment of the present invention discloses a kind of sensing heart rate display device and heart rate detection method, intelligent wearable device, is related to heart rate detection technical field, for solving the problems, such as that intelligent wearable device is lightening.The sensing heart rate display device includes active light-emitting backplane；The package-side of active light-emitting backplane is equipped with transflection layer, and the substrate side of active light-emitting backplane is equipped at least one light detection sensing module；Wherein, transflection layer is used in the display stage be in transmission mode, and is in reflective-mode in the heart rate detection stage, reflexes to target detected part for the emergent ray of active light-emitting backplane as light detecting signal；Light detection sensing module, which is used to collect, measures the reflected light signal that target detected part is formed after light detecting signal irradiation.Sensing heart rate display device and heart rate detection method provided in an embodiment of the present invention, intelligent wearable device are used for user's heart rate detection.
Description
Technical field
The present invention relates to heart rate detection technical field more particularly to a kind of sensing heart rate display devices and intelligence wearing to set
It is standby.
Background technique
With the rapid development of intelligent wearable device, set in intelligent wearable device especially Intelligent bracelet or smartwatch
It sets heart rate sensor and has become one of its mainstream development trend.Intelligent bracelet or smartwatch utilize heart rate sensor, Ke Yicong
The wrist of user carries out real-time monitoring to the Heart Rate States of user, so as to the Real-time Feedback user's body in the daily life of user
Health status.
However, heart rate sensor directly contacts or irradiate the wrist of user for convenience, current heart rate sensor is often
The back side for needing to be independently arranged at Intelligent bracelet or smartwatch causes the thickness of Intelligent bracelet or smartwatch larger, unfavorable
In realizing the lightening of Intelligent bracelet or smartwatch.
Summary of the invention
The embodiment of the present invention is designed to provide a kind of sensing heart rate display device and heart rate detection method, intelligence wearing
Equipment, to realize the lightening of intelligent wearable device.
To achieve the goals above, the embodiment of the present invention provides the following technical solutions:
The first aspect of the embodiment of the present invention provides a kind of sensing heart rate display device, the sensing heart rate display device packet
Include active light-emitting backplane；The package-side of active light-emitting backplane is equipped with transflection layer, and the substrate side of active light-emitting backplane is equipped at least one
A light detection sensing module；Wherein, transflection layer is used in the display stage be in transmission mode, and in the heart rate detection stage in reflection mould
The emergent ray of active light-emitting backplane is reflexed to target detected part by formula；Light detection sensing module
For collecting the reflected light signal for measuring target detected part and being formed after light detecting signal irradiation.
Transflection layer is arranged in the package-side of active light-emitting backplane in sensing heart rate display device provided in an embodiment of the present invention,
It can be in transmission mode in display season in stage transflection layer, to realize the display of sensing heart rate display device, and in heart rate detection
Season in stage transflection layer is in reflective-mode, the emergent light of active light-emitting backplane is reflexed to target detected part, and by light detection
Sensing module, which is collected, measures the reflected light signal that the target detected part is formed after light detecting signal irradiation, to realize heart rate
The detection function of sensing display part.The embodiment of the present invention can use active light-emitting backplane as its heart rate detection light as a result,
Source, and under the premise of not influencing active light-emitting backplane display function, by the transflection layer for being located at active light-emitting backplane package-side
And it is located at the light detection sensing module of active light-emitting backplane substrate side, heart rate detection is carried out to user, without actively
The outside of light-emitting backplane is independently arranged the sensing heart rate device including heart rate detection light source, in this way by the embodiment of the present invention
When the sensing heart rate display device of offer is installed in intelligent wearable device, the thickness of intelligent wearable device can be effectively reduced,
It is advantageously implemented the lightening of intelligent wearable device.
Optionally, above-mentioned active light-emitting backplane includes OLED backboard；OLED backboard includes underlay substrate and multiple arrays
The pixel unit being located on underlay substrate；Multiple pixel units include that at least one was used in display stage and heart rate detection stage
Luminous multiplexing pixel unit；Transmittance section, light transmission are equipped between the multiplexing pixel unit and at least one adjacent pixel unit
Portion is used to that the emergent ray for being multiplexed pixel unit to be reflexed to target as light detecting signal for transflection layer in the heart rate detection stage
Detected part.
Optionally, above-mentioned multiplexing pixel unit is A in the frontal projected area of underlay substrate1, with the multiplexing pixel unit pair
The transmittance section answered is A in the frontal projected area of underlay substrate2；Wherein, A2/A1=a, 5%≤a≤25%.
Optionally, above-mentioned pixel unit includes that the pixel-driving circuit being sequentially formed on underlay substrate and pixel define
Layer, the open region of pixel defining layer are equipped with the OLED connecting with pixel-driving circuit.Above-mentioned transmittance section and pixel defining layer one
Molding；Or, above-mentioned transmittance section includes: and integrally formed first light transmission of at least one of pixel-driving circuit light transmission function film layer
Layer, and with integrally formed second photic zone of pixel defining layer.
Optionally, the OLED of above-mentioned multiplexing pixel unit includes green light OLED.
Optionally, above-mentioned transflection layer includes the first electrode layer being oppositely arranged and the second electrode lay, and is filled in first
Cholesteric liquid crystal between electrode layer and the second electrode lay.
Optionally, the electrode layer towards active light-emitting backplane includes conductive glass in above-mentioned first electrode layer and the second electrode lay
Glass electrode layer；The thickness of conductive glass electrode layer≤0.5 ㎜.
Optionally, above-mentioned sensing heart rate display device further includes display cover board；Transflection layer is integrated in display cover board towards master
The surface of dynamic light-emitting backplane.
Optionally, above-mentioned light detection sensing module includes PIN photodiode；PIN photodiode, which is integrated in, actively to be sent out
Light back board deviates from the surface of transflection layer.
Based on the technical solution of above-mentioned sensing heart rate display device, the second aspect of the embodiment of the present invention provides a kind of intelligence
Energy wearable device, the intelligent wearable device includes sensing heart rate display device provided by above-mentioned technical proposal.The present invention is real
Beneficial effect achieved by the intelligent wearable device of example offer is applied, the sensing heart rate display device provided with above-mentioned technical proposal
The attainable beneficial effect of institute is identical, and this will not be repeated here.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes a part of the invention, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is a kind of structural schematic diagram of sensing heart rate display device provided in an embodiment of the present invention；
Fig. 2 a, Fig. 2 b and Fig. 2 c are three kinds of distribution schematic diagrams of transmittance section provided in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of another sensing heart rate display device provided in an embodiment of the present invention；
Fig. 4 is the patterns of change schematic diagram of transflection layer in sensing heart rate display device shown in Fig. 3；
Fig. 5 is reflectivity schematic diagram of the transflection layer in reflective-mode shown in Fig. 4；
Fig. 6 is a kind of structural schematic diagram of light detection sensing module provided in an embodiment of the present invention；
Fig. 7 is a kind of structural schematic diagram of the shell of intelligent wearable device provided in an embodiment of the present invention；
Fig. 8 is a kind of flow diagram of heart rate detection method provided in an embodiment of the present invention.
Appended drawing reference:
1-OLED backboard, 11- underlay substrate, 12- pixel-driving circuit,
13-OLED, 14 encapsulated layers, 2- transflection layer,
21- first electrode layer, 22- cholesteric liquid crystal, 23- the second electrode lay,
3- light detection sensing module, 31- third electrode layer, 32-PIN layers,
The 4th electrode layer of 33-, 4- target detected part, 5- show cover board,
6- shell, 61- light source opening, 62- sensing module opening,
7- is multiplexed pixel unit, the transmittance section 8-.
Specific embodiment
For ease of understanding, with reference to the accompanying drawings of the specification, to sensing heart rate display device provided in an embodiment of the present invention and
Heart rate detection method, intelligent wearable device are described in detail.
Fig. 1-Fig. 3 is please referred to, the embodiment of the invention provides a kind of sensing heart rate display device, the sensing heart rate displays
Part includes active light-emitting backplane；The package-side of active light-emitting backplane is equipped with transflection layer 2, and the substrate side of active light-emitting backplane is equipped with extremely
A few light detection sensing module 3；Wherein, transflection layer 2 is used in the display stage be in transmission mode, and is in the heart rate detection stage
The emergent ray of active light-emitting backplane is reflexed to target detected part 4 by reflective-mode；Light detection passes
Sense module 3, which is used to collect, measures the reflected light signal that target detected part 4 is formed after light detecting signal irradiation.
Above-mentioned active light-emitting backplane generally includes organic electroluminescent LED (Organic Light-
EmittingDiode, abbreviation OLED) backboard 1 or other backboards that can actively shine for display, for example quantum dot is electroluminescent
Shine (Quantum Dot Light Emitting Diodes, abbreviation QLED) backboard.
Illustratively, in the present embodiment, active light-emitting backplane is OLED backboard 1；OLED backboard 1 generallys use top light-emitting junction
Structure comprising underlay substrate 11 and multiple arrays are located at the pixel unit on underlay substrate 11；The substrate of above-mentioned OLED backboard 1
Side refers to that the side of underlay substrate 11 is arranged in OLED backboard 1, specifically can be the side that underlay substrate 11 deviates from encapsulated layer 14, or
Surface of the person's underlay substrate 11 towards encapsulated layer 14；The package-side of above-mentioned OLED backboard 1 specifically refers to OLED backboard 1 and is equipped with encapsulation
The side of layer 14 normally behaves as the light emission side of the luminous OLED backboard 1 in top.
Please continue to refer to Fig. 2 a, Fig. 2 b and Fig. 2 c, in OLED backboard 1, multiple pixel units include at least one
For the multiplexing pixel unit 7 luminous in display stage and heart rate detection stage, i.e. the multiplexing pixel unit 7 is being used as display light
Except source, heart rate detection light source can also be multiplexed with.The quantity for being multiplexed pixel unit 7 can sets itself according to actual needs；
Transmittance section 8 should be equipped between each multiplexing pixel unit 7 and at least one adjacent pixel unit, this is that is, each multiple
At least side of pixel unit 7 is provided with transmittance section 8, to utilize transmittance section 8 will be right for transflection layer 2 in the heart rate detection stage
The emergent ray that pixel unit 7 should be multiplexed reflexes to target detected part 4 as light detecting signal.
Sensing heart rate display device provided in an embodiment of the present invention, for detecting the Heart Rate States of user, target is to be measured
Position 4 typically refers to wrist, neck etc. can obtain the position of user's blood variation by light detecting signal.In the present embodiment
Target detected part 4 is chosen as the arm blood vessel of user.
Transflection layer 2 is arranged in the package-side of OLED backboard 1 in sensing heart rate display device provided in an embodiment of the present invention, can
To be in transmission mode in display season in stage transflection layer 2, to realize the display of sensing heart rate display device, and in detection pattern
It enables transflection layer 2 in reflective-mode, the emergent light that pixel unit 7 is multiplexed in OLED backboard 1 is reflexed into target detected part 4, and
It is collected by light detection sensing module 3 and measures the reflected light signal that the target detected part 4 is formed after light detecting signal irradiation,
To realize the detection function of sensing heart rate display device.The embodiment of the present invention can use the multiplexing picture in OLED backboard 1 as a result,
Plain unit 7 is used as its heart rate detection light source, and under the premise of not influencing OLED 1 display function of backboard, by being integrated in OLED
The transflection layer 2 of 1 package-side of backboard and the light detection sensing module 3 for being located at 1 substrate side of OLED backboard carry out heart rate inspection to user
It surveys, without the sensing heart rate device being independently arranged in the outside of OLED backboard 1 including heart rate detection light source, exists in this way
When sensing heart rate display device provided in an embodiment of the present invention is installed in intelligent wearable device, intelligence can be effectively reduced and worn
The thickness of equipment is worn, to realize the lightening of intelligent wearable device.
It is multiplexed between pixel unit and adjacent pixel unit you need to add is that above-mentioned transmittance section 8 is located in OLED backboard 1
Every place, in order to avoid it generates adverse effect to the display effect of OLED backboard 1, the glazed area of transmittance section 8 be should not be too large, this
Embodiment limits transmittance section 8 with the area accounting of corresponding multiplexing pixel unit 7；Illustratively, multiplexing pixel unit 7 exists
The frontal projected area of underlay substrate 11 is A1, orthographic projection of the transmittance section 8 corresponding with the multiplexing pixel unit 7 in underlay substrate 11
Area is A2When, enable the ratio i.e. A of the two2/A1=a, then 5%≤a≤25%.Certainly, if it is right that transmittance section 8, which is incorporated into,
When should be multiplexed a component part of pixel unit 7, area accounting of the transmittance section 8 in corresponding multiplexing pixel unit 7 is optimal about
5% to 20%.In addition, the shape of transmittance section 8 can sets itself according to actual needs, such as strip or cylindric etc..
It is understood that each pixel unit of above-mentioned OLED backboard 1 has generally included to be sequentially formed at underlay substrate 11
On pixel-driving circuit 12 and pixel defining layer, the open region of pixel defining layer is equipped with to be connect with pixel-driving circuit 12
OLED13, pixel defining layer and OLED13 are equipped with encapsulated layer 14 backwards to the surface of underlay substrate 11.Pixel-driving circuit 12 is general
It is made of in series and parallel several thin film transistor (TFT)s and capacitor, it, usually can be according to corresponding film when making pixel-driving circuit 12
The structure of transistor sequentially forms each electrode layer on underlay substrate 11 and respectively corresponds the light transmission function of insulation with each electrode layer
It can film layer.
Above-mentioned transmittance section 8 generally makes to be formed using the resin material of light transmission, production method specifically can there are many.Show
Example property, above-mentioned transmittance section 8 is integrally formed with pixel defining layer, i.e., first corresponds in underlay substrate 11 and be located at multiplexing pixel unit 7
Part between adjacent pixel unit remains for the interval of light transmission in advance, then when making pixel defining layer, is defined by pixel
Layer is partially filled with the interval, to form transmittance section 8.Alternatively, above-mentioned transmittance section 8 is by least one of with pixel-driving circuit 12
Integrally formed first photic zone of light transmission function film layer, and formed with integrally formed second photic zone of pixel defining layer；I.e.
It, can be first with corresponding existing at least one saturating in pixel-driving circuit when making pixel-driving circuit on underlay substrate 11
Light functional film layer is located at the part between multiplexing pixel unit 7 and adjacent pixel unit and constitutes the first photic zone, the light transmission function
Film layer includes gate insulation layer, interlayer insulating film or planarization layer etc., then, then when making pixel defining layer, utilizes pixel circle
Given layer is located at the part between multiplexing pixel unit 7 and adjacent pixel unit and constitutes the second photic zone, by the first photic zone and the
Two light transmission layer stackups constitute transmittance section 8.
Certainly, when above-mentioned transmittance section 8 is made of the first photic zone and the second light transmission layer stackup, if the first photic zone is by more
Layer light transmission function film layer stacking composition, and different materials has been respectively adopted in each layer light transmission function film layer and the second photic zone,
When i.e. each layer light transmission function film layer and the second photic zone are respectively provided with different refractive index, it is preferred that be directed toward and serve as a contrast along transflection layer 2
The refractive index of the direction of substrate 11, the second photic zone and each layer light transmission function film layer is sequentially increased；It in this way can be in transflection layer 2
It is constantly poly- during the emergent ray of corresponding multiplexing pixel unit 7 is reflexed to target detected part 4 as light detecting signal
Hold together light detecting signal, to ensure that there is biggish luminous intensity after light detecting signal reflexes to target detected part 4, thus to mesh
The heart rate of mark detected part 4 is accurately detected.
It is noted that sensing heart rate display device provided in this embodiment, flash ranging is mostly used to feel one's pulse technology progress
Heart rate detection；The OLED for being multiplexed pixel unit 7 in above-mentioned sensing heart rate display device preferably uses green light OLED.Due to user's blood
It takes on a red color, can reflect feux rouges, absorb green light, in this way in the moment of user's heartbeat, with the increase of blood volume at user's wrist,
The green light of green light OLED outgoing will largely be absorbed in multiplexing pixel unit 7, and corresponding in the gap of user's heartbeat twice, user
Blood volume at wrist can be relatively smaller, and the uptake for being multiplexed the green light of green light OLED outgoing in pixel unit 7 is also relatively smaller
It is some, it can be obtained the heart rate of user by the beats of detection user within a certain period of time as a result,；Go out light color with other
OLED compare, the present embodiment using multiplexing pixel unit 7 in green light OLED outgoing green light, can be in the difference of user's heartbeat
State differs biggish uptake by green light, and signal-to-noise ratio is effectively reduced, to obtain better heart rate detection effect.
It should be noted that above-mentioned OLED backboard 1 generally mostly uses rgb color display pattern, i.e. each picture in OLED backboard 1
The OLED of plain unit includes feux rouges OLED, green light OLED and three kinds of Nan dian Yao；Wherein, the pixel unit where green light OLED
As above-mentioned multiplexing pixel unit 7, can shine in display stage and heart rate detection stage；Feux rouges OLED and Nan dian Yao
It is used as display light source for shining in the display stage, and is not shone in the heart rate detection stage.The present embodiment is selected in OLED backboard 1
Green light OLED as display light source and heart rate detection light source, and control feux rouges OLED and Nan dian Yao the heart rate detection stage not
It shines, the power consumption of sensing heart rate display device can also be effectively reduced.
In addition, if the OLED of each pixel unit is all made of green light OLED in OLED backboard 1, then each pixel unit
As multiplexing pixel unit；And it is panchromatic in order to ensure that can be carried out in the display stage using the sensing heart rate display device of the structure
Colour display screen shows that the present embodiment also needs that colored filter is arranged in the package-side of OLED backboard 1.
In some embodiments, production efficiency is improved for convenience of manufacture, optionally, above-mentioned sensing heart rate display device
It further include display cover board 5；Transflection layer 2 is integrated in display cover board 5 towards the active light-emitting backplane i.e. surface of OLED backboard 1.In this way
Complete OLED backboard 1 and equipped with the display cover board 5 of transflection layer 2 after, can be with using the encapsulated layer 14 of OLED backboard 1
The display cover board 5 and OLED backboard 1 for being equipped with transflection layer 2 is well packaged.
It is worth noting that, transflection layer 2 is also referred to as transflective layer, for realizing the transmission of display stage and heart rate detection rank
The switching of section two kinds of different phase different modes of reflection, transflection layer 2 generally can make shape by transflection liquid crystal or electrochromic material
At.Illustratively, referring to Fig. 3, above-mentioned transflection layer 2 includes the first electrode layer 21 being oppositely arranged and the second electrode lay 23, with
And it is filled in the cholesteric liquid crystal 22 between first electrode layer 21 and the second electrode lay 23；Wherein, first electrode layer 21 and second
Electrode layer 23 is used to control the molecule deflection state of cholesteric liquid crystal 22, and phase can be used in first electrode layer 21 and the second electrode lay 23
Same or different light-transmitting conductive material makes to be formed, and first electrode layer 21 and the second electrode lay 23 are separately connected with opposed polarity
Voltage drive end.
When above-mentioned transflection layer 2 is integrated in the surface of display cover board 5, side of the display cover board 5 as transflection layer 2 can use
Substrate, it can directly shown in Fig. 3 to be formed in surface coating transparent conducting thin film of the display cover board 5 towards OLED backboard 1
The second electrode lay 23.This is that is, transflection layer 2 uses transflection liquid in sensing heart rate display device provided in this embodiment
When crystal structure, it can be adopted in first electrode layer and the second electrode lay towards active light-emitting backplane, that is, OLED backboard 1 electrode layer
It makes to be formed of electro-conductive glass, and the electrode layer towards display cover board 5 in first electrode layer and the second electrode lay can be using saturating
Photoconductive films make to be formed.In order to ensure the transflection layer 2 has lesser thickness, above-mentioned made using electro-conductive glass to be formed
The thickness of conductive glass electrode layer is general≤0.5 ㎜, such as 0.2 ㎜.
Above-mentioned cholesteric liquid crystal 22 has transmission and reflection both of which, can divide according to the deflection state of its liquid crystal molecule
For pyramid state and plane state.Referring to Fig. 4, cholesteric liquid crystal is the pyramid state as shown in (a) in Fig. 4, i.e. cholesteric liquid crystal two
When voltage difference between side first electrode layer 21 and the second electrode lay 23 is 0V, cholesteric liquid crystal is in transmission mode, Ke Yiling
The emergent light of OLED backboard 1 penetrates, and optical transmittance > 87%；Cholesteric liquid crystal is the plane state as shown in (b) in Fig. 4, i.e.,
When voltage difference between cholesteric liquid crystal two sides first electrode layer 21 and the second electrode lay 23 is not 0V, cholesteric liquid crystal is in reflection
The emergent light of OLED backboard 1 can be reflexed to target detected part 4, and optical reflectivity >=87% by mode.The present embodiment benefit
When using cholesteric liquid crystal as transflection layer 2, the reflectivity of the visible light of 2 pairs of variant wavelength of transflection layer is as shown in Figure 5；Wherein,
V2> V1> V0, voltage difference of the V between cholesteric liquid crystal two sides first electrode layer 21 and the second electrode lay 23.
Above-mentioned cholesteric liquid crystal is usually mixed to form by liquid crystal molecule and chiral dopants.Wherein, liquid crystal molecule can be used
At least a kind of compound is constituted as follows:
The first kind, multi-party ring class liquid-crystal compounds；Such as:
Second class, diphenylacetylene liquid crystal compounds；Such as:
Third class, polyacetylene liquid-crystal compounds；Such as:
4th class, diphenyl connect two alkynes liquid crystal compounds；Such as:
F indicates that fluorine atom, C indicate carbon atom, X, Y, R, R in above compound ' respectively indicate a kind of atom or a kind of base
Group, such as carbon (C) atom, oxygen (O) atom, nitrogen (N) atom, hydrogen (H) atom or hydro carbons group, aromatics group etc..
Chiral dopants can be used following at least one compound and constitute:
The first,
Second,
The third,
4th kind,
5th kind,
6th kind,
F indicates that fluorine atom, C indicate that carbon atom, O indicate that oxygen atom, n indicate the quantity of corresponding group in above compound.
It is understood that referring to Fig. 6, PIN photodiode can be used in above-mentioned light detection sensing module 3；PIN photoelectricity
Diode generally comprises the third electrode layer 31 being cascading, PIN layer 32 and the 4th electrode layer 33.Two pole of PIN photoelectricity
Pipe is located at the substrate side of active light-emitting backplane, specifically can integrate in active light-emitting backplane i.e. OLED backboard 1 away from transflection layer 2
Surface, i.e., underlay substrate 11 deviates from the surface of encapsulated layer 14 in OLED backboard 1；Also it can integrate in underlay substrate 11 towards encapsulation
The surface of layer 14；Molding can also be fabricated separately, and be installed on the shell of sensing heart rate display device place intelligent wearable device
Outside；The present embodiment is not construed as limiting the specific installation site of light detection sensing module 3, can receive target detected part 4
Subject to the reflected light signal formed after light detecting signal irradiation.
When molding is fabricated separately in above-mentioned PIN photodiode, glass, plastics or flexible polyimide film can be selected
(Polyimide, abbreviation PI) is used as substrate, and third electrode layer 31, PIN layer 32 and the 4th electricity are then sequentially formed in substrate
Pole layer 33.In addition, the third electrode layer 31 and the 4th electrode layer 33 of above-mentioned PIN diode are not necessarily to patterned process, distinguished
Extraction, which is connected into the control circuit board of intelligent wearable device, can be used.
When in use, heart rate detection method is as shown in figure 8, packet for sensing heart rate display device provided in an embodiment of the present invention
It includes:
Step S1, starting sensing heart rate display device enter heart rate detection stage, the transflection layer of sensing heart rate display device
Into reflective-mode.
Above-mentioned transflection layer applies voltage when using transflection liquid crystal structure, through the electrode to the transflection liquid crystal structure, i.e.,
It can control its liquid crystal deflection to reflective-mode, to reflect incident ray.
Step S2 drives the multiplexing pixel unit of active light-emitting backplane in sensing heart rate display device to shine, and transflection layer will
The emergent ray of corresponding multiplexing pixel unit reflexes to target detected part as light detecting signal.
Above-mentioned target detected part typically refers to wrist, neck etc. can obtain the variation of user's blood by light detecting signal
Position；Target detected part in the present embodiment is embodied in the arm blood vessel of user.
Step S3, light detection sensing module, which is collected, measures target detected part by formation after the irradiation of above-mentioned light detecting signal
Reflected light signal, obtain heart rate detection data.
Above-mentioned light detection sensing module uses PIN photodiode；PIN photodiode is by obtaining light detecting signal quilt
The reflected light signal formed after the reflection of target detected part can convert the reflected light signal to current signal, output to the heart
The control circuit board of rate sensing display part measures so that control circuit board records, completes the heart rate detection of user；Certainly, it controls
Circuit board processed can also the heart rate detection data to user store, and after sensing heart rate display device enters the display stage
It is shown according to the demand of user.
The embodiment of the invention also provides a kind of intelligent wearable device, it is equipped in the shell of the intelligent wearable device above-mentioned
Sensing heart rate display device provided by embodiment.Beneficial effect achieved by intelligent wearable device provided in an embodiment of the present invention
Fruit, identical as the sensing heart rate display device attainable beneficial effect of institute provided by the above embodiment, this will not be repeated here.
Illustratively, referring to Fig. 7, in the present embodiment, intelligent wearable device includes Intelligent bracelet or smartwatch.Intelligence
Can bracelet or smartwatch housing bottom, i.e. its shell sensing heart rate display device corresponding with the part of user hand arm contact
Structure is respectively equipped at least one light source opening 61 and at least one sensing module opening 62；Wherein, light source opening 61 is used
Pass through in the light detecting signal reflected for transflection layer, and ensures that the light detecting signal exposes to the target detected part of user；It passes
Sense module openings 62 are used to be passed through for target detected part by the reflected light signal formed after the irradiation of above-mentioned light detecting signal, and
Ensure that the reflection signal exposes to light detection sensing module, collects and measure so as to light detection sensing module.Above-mentioned light source opening 61
With the quantity of sensing module opening 62, character and its arrange position can sets itself according to actual needs, the present embodiment pair
Than being not especially limited.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of sensing heart rate display device, which is characterized in that including active light-emitting backplane；The encapsulation of the active light-emitting backplane
Side is equipped with transflection layer, and the substrate side of the active light-emitting backplane is equipped at least one light detection sensing module；Wherein,
The transflection layer is used in the display stage be in transmission mode, and is in reflective-mode in the heart rate detection stage, by the master
The emergent ray of dynamic light-emitting backplane reflexes to target detected part as light detecting signal；
The light detection sensing module measures the target detected part by shape after light detecting signal irradiation for collecting
At reflected light signal.
2. sensing heart rate display device according to claim 1, which is characterized in that the active light-emitting backplane includes OLED
Backboard；The OLED backboard includes underlay substrate and multiple arrays are located at the pixel unit on the underlay substrate；Multiple institutes
Stating pixel unit includes that at least one is used for the multiplexing pixel unit luminous in display stage and heart rate detection stage；
Transmittance section is equipped between described multiplexing pixel unit and at least one adjacent pixel unit, the transmittance section is used in the heart
The emergent ray of the multiplexing pixel unit is reflexed to target as light detecting signal for the transflection layer and waited for by rate detection-phase
Survey position.
3. sensing heart rate display device according to claim 2, which is characterized in that the multiplexing pixel unit is in the lining
The frontal projected area of substrate is A1, positive throwing of the transmittance section corresponding with the multiplexing pixel unit in the underlay substrate
Shadow area is A2；Wherein, A2/A1=a, 5%≤a≤25%.
4. sensing heart rate display device according to claim 2, which is characterized in that the pixel unit includes sequentially forming
Pixel-driving circuit and pixel defining layer on the underlay substrate, the open region of the pixel defining layer be equipped with it is described
The OLED of pixel-driving circuit connection；
The transmittance section and the pixel defining layer are integrally formed；
Or, the transmittance section includes saturating at least one of pixel-driving circuit light transmission function film layer integrally formed first
Photosphere, and with integrally formed second photic zone of the pixel defining layer.
5. according to the described in any item sensing heart rate display devices of claim 2-4, which is characterized in that the multiplexing pixel unit
OLED include green light OLED.
6. sensing heart rate display device according to claim 1, which is characterized in that the transflection layer includes being oppositely arranged
First electrode layer and the second electrode lay, and the cholesteric liquid crystal being filled between the first electrode layer and the second electrode lay.
7. sensing heart rate display device according to claim 6, which is characterized in that the first electrode layer and described second
Electrode layer towards the active light-emitting backplane in electrode layer includes conductive glass electrode layer；The thickness of the conductive glass electrode layer
Spend≤0.5 ㎜.
8. sensing heart rate display device according to claim 1, which is characterized in that
The sensing heart rate display device further includes display cover board；
The transflection layer is integrated in the display surface of the cover board towards the active light-emitting backplane.
9. sensing heart rate display device according to claim 1, which is characterized in that
The light detection sensing module includes PIN photodiode；
The PIN photodiode is integrated in the surface that the active light-emitting backplane deviates from the transflection layer.
10. a kind of intelligent wearable device, which is characterized in that shown including such as described in any item sensing heart rates of claim 1-9
Device.
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