CN207182838U - A kind of display device - Google Patents
A kind of display device Download PDFInfo
- Publication number
- CN207182838U CN207182838U CN201721270071.9U CN201721270071U CN207182838U CN 207182838 U CN207182838 U CN 207182838U CN 201721270071 U CN201721270071 U CN 201721270071U CN 207182838 U CN207182838 U CN 207182838U
- Authority
- CN
- China
- Prior art keywords
- photosensitive
- layer
- electrode
- display device
- underlay substrate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Electroluminescent Light Sources (AREA)
Abstract
The utility model discloses a kind of display device, including：Underlay substrate, the organic elctroluminescent device on underlay substrate, the encapsulated layer on organic elctroluminescent device, the photosensitive layer between underlay substrate and encapsulated layer, and photosensitive detection circuit；Photosensitive layer, including：At least one photosensitive detecting electrode being connected with photosensitive detection circuit；Underlay substrate and encapsulated layer are made up of light transmissive material, and a light part for organic elctroluminescent device outgoing is emitted by encapsulated layer, and a part is emitted by underlay substrate；Photosensitive detecting electrode, sent for detecting the reflection light of human body, and by the photo-signal detected to photosensitive detection circuit；Photosensitive detection circuit, for the photo-signal detected according to photosensitive detecting electrode, determine heart rate information and export.Due to photosensitive layer can by the use of organic elctroluminescent device emergent light or ambient light as light source, without being separately provided light source, be constantly shrinking and reduce power consumption.
Description
Technical field
Display technology field is the utility model is related to, espespecially a kind of display device.
Background technology
In recent years, with the development of science and technology, the Internet of things era of all things on earth interconnection is coming, in the composition of Internet of Things
In system, realizing the data of the needs of all things on earth interconnection undoubtedly needs to be acquired by various sensors, therefore low cost, high collection
Cheng Du, easy-to-use sensor by be future technology favorite.
The popularization of mobile device such as mobile phone, modern society has been caused to enter the whole people and read the screen epoch, screen can be described as
People are most indispensable, and according to "ockham's razor" principle, screen is together with various sensor integrations, while as information
Outlet terminal and input terminal, it may be possible to the ultimate form of future technology product, therefore, it is various with sensor and screen it is integrated
Change the center of gravity that will be worked as future technology.
At present, the mobile display device with heart rate detecting function has been realized in commercialization, but this product is still
The mode for having used display screen module and heart rate detection sensor module to be combined realizes, the mobile display device after combination,
Including：Display screen, optical sensor, the light source of optical sensor, and the device such as processor (CPU), therefore, in the prior art
The mobile display device with heart rate detecting function has that modular volume is big, thick and heavy and cost is high.
Utility model content
The utility model embodiment provides a kind of display device, to solve to have heart rate inspection present in prior art
The problem of mobile display device volume of brake is big, thick and heavy and cost is high.
The utility model embodiment provides a kind of display device, including：Underlay substrate, on the underlay substrate
Organic elctroluminescent device, the encapsulated layer on the organic elctroluminescent device, positioned at the substrate base
Photosensitive layer between plate and the encapsulated layer, and photosensitive detection circuit；
The photosensitive layer, including：At least one photosensitive detecting electrode being connected with the photosensitive detection circuit；
The underlay substrate and the encapsulated layer are made up of light transmissive material, the organic elctroluminescent device outgoing
A light part is emitted by the encapsulated layer, and a part is emitted by the underlay substrate；
The photosensitive detecting electrode, for detecting the reflection light of skin, and by the photo-signal detected send to
The photosensitive detection circuit；
The photosensitive detection circuit, for the photo-signal detected according to the photosensitive detecting electrode, determine heart rate
Information simultaneously exports.
In a kind of possible implementation, in the above-mentioned display device that the utility model embodiment provides, in addition to：
Deviate from the light shield layer of the underlay substrate side positioned at the photosensitive layer；
The figure of the light shield layer is consistent with the figure of the photosensitive layer.
It is described to have in the above-mentioned display device that the utility model embodiment provides in a kind of possible implementation
Electroluminescent display part, including：First electrode layer, positioned at the first electrode layer close to the underlay substrate side
Two electrode layers, and the organic function layer between the first electrode layer and the second electrode lay；
The first electrode layer and the second electrode lay are made up of transparent conductive material.
In a kind of possible implementation, in the above-mentioned display device that the utility model embodiment provides, described the
One electrode layer, including：The a plurality of first electrode extended in a first direction；
The second electrode lay, including：The second electrode for the second direction extension that a plurality of edge intersects with the first direction；
The organic function layer, including：Luminous list at the first electrode and the second electrode crossover location
Member；
Orthographic projection of the photosensitive detecting electrode with the luminescence unit on the underlay substrate is not exclusively overlapping.
In a kind of possible implementation, in the above-mentioned display device that the utility model embodiment provides, the light
Photosensitive layer, including：The multiple photosensitive detecting electrodes being arranged in array；
Orthographic projection of each photosensitive detecting electrode on the underlay substrate, and each first electrode, each described
The orthographic projection of two electrodes and each luminescence unit on the underlay substrate is not overlapping.
In a kind of possible implementation, in the above-mentioned display device that the utility model embodiment provides, the light
Photosensitive layer, including：The photosensitive detecting electrode of multiple strips being arranged side by side；
The photosensitive detecting electrode extends along the first direction, and with the first electrode on the underlay substrate
Orthographic projection is misaligned；Or,
The photosensitive detecting electrode extends along the second direction, and with the second electrode on the underlay substrate
Orthographic projection is misaligned.
In a kind of possible implementation, in the above-mentioned display device that the utility model embodiment provides, the light
Photosensitive layer, including：The photosensitive detecting electrode that one whole face is set；
The photosensitive detecting electrode is set in the orthographic projection region overlapping with each luminescence unit for hollow out.
In a kind of possible implementation, in the above-mentioned display device that the utility model embodiment provides, the light
Quick detection circuit, including：The drive signal line extended along the first direction, the detection signal extended along the second direction
Line, and switching transistor；Wherein,
The grid of the switching transistor is connected with the drive signal line, and source electrode is connected with the photosensitive detecting electrode,
Drain electrode is connected with the signal lines.
In a kind of possible implementation, in the above-mentioned display device that the utility model embodiment provides, the light
Quick detection circuit, in addition to：Current-to-voltage converting circuit, the filter circuit being connected with the current-to-voltage converting circuit, with institute
The amplifying circuit of filter circuit connection, the counter being connected with the amplifying circuit are stated, and is determined with what the counter was connected
When device；Wherein,
The current-to-voltage converting circuit, it is connected with the signal lines, for the signal lines to be detected
Photo-signal be converted to voltage signal；
The filter circuit, for being filtered processing to the voltage signal；
The amplifying circuit, for being amplified processing to the voltage signal after filtering process；
The counter, for being counted under the control of the timer, to obtain heart rate value.
In a kind of possible implementation, in the above-mentioned display device that the utility model embodiment provides, the drive
Dynamic signal wire is also connected with the organic elctroluminescent device, for showing the period, drives the organic electroluminescence to send out
Light display device display picture, and in heart rate detection period, the driving photosensitive detecting electrode detection photo-signal.
In a kind of possible implementation, in the above-mentioned display device that the utility model embodiment provides, in addition to：
Deviate from the black matrix layer of the underlay substrate side positioned at the organic EL display panel；
The black matrix layer covers a part for the organic elctroluminescent device, and the black matrix layer is at least covered
One photosensitive detecting electrode of lid；
The photosensitive detection circuit, in addition to：Mode switching circuit；
The mode switching circuit, under active optical mode, control to be in the region of black matrix layer covering
Each photosensitive detecting electrode detection photo-signal, and under ambient light patterns, control covers positioned at the black matrix
Region beyond each photosensitive detecting electrode detection photo-signal.
In a kind of possible implementation, in the above-mentioned display device that the utility model embodiment provides, the master
Dynamic optical mode is the period of the organic elctroluminescent device display picture or dormancy, and the ambient light patterns are described
The period that organic elctroluminescent device is closed.
In a kind of possible implementation, in the above-mentioned display device that the utility model embodiment provides, the light
Photosensitive layer is located at organic elctroluminescent device close to the side of the underlay substrate.
In a kind of possible implementation, in the above-mentioned display device that the utility model embodiment provides, in addition to：
Line layer between the underlay substrate and the organic elctroluminescent device；
The photosensitive detection circuit is set with the line layer with layer；
The photosensitive layer is between the organic elctroluminescent device and the line layer.
In a kind of possible implementation, in the above-mentioned display device that the utility model embodiment provides, the light
Quick detecting electrode is made up of PIN-type semi-conducting material or PN type semi-conducting materials.
The utility model has the beneficial effect that：
The display device that the utility model embodiment provides, including：Underlay substrate, organic electroluminescence is sent out on underlay substrate
Light display device, the encapsulated layer on organic elctroluminescent device, the light between underlay substrate and encapsulated layer
Photosensitive layer, and photosensitive detection circuit；Photosensitive layer, including：At least one photosensitive detecting electrode being connected with photosensitive detection circuit；Lining
Substrate and encapsulated layer are made up of light transmissive material, and a light part for organic elctroluminescent device outgoing is gone out by encapsulated layer
Penetrate, a part is emitted by underlay substrate；Photosensitive detecting electrode, for detecting the reflection light of human body, and the light that will be detected
Current signal is sent to photosensitive detection circuit；Photosensitive detection circuit, for the photoelectric current letter detected according to photosensitive detecting electrode
Number, determine heart rate information and export.In the display device that the utility model embodiment provides, underlay substrate and encapsulated layer are by transparent
Material is formed, and organic elctroluminescent device can be with two-way light extraction, by setting light between underlay substrate and encapsulated layer
Photosensitive layer, photosensitive layer can by the use of organic elctroluminescent device emergent light or ambient light as light source, without individually setting
Light source is put, reduces the size of heart rate detection device, and reduces the power consumption of heart rate detection.
Brief description of the drawings
Fig. 1 is one of structural representation of display device that the utility model embodiment provides；
Fig. 2 a~Fig. 2 d are the top view for the display device that the utility model embodiment provides；
Fig. 3 is the partial enlarged drawing at a photosensitive detecting electrode in Fig. 2 a；
Fig. 4 is the structural representation of photosensitive detection circuit；
Fig. 5 is the two of the structural representation for the display device that the utility model embodiment provides；
Fig. 6 is another top view for the display device that the utility model embodiment provides；
Wherein, 100, skin；11st, underlay substrate；12nd, organic elctroluminescent device；121st, first electrode layer；122、
The second electrode lay；123rd, organic function layer；13rd, encapsulated layer；14th, photosensitive layer；141st, photosensitive detecting electrode；151st, drive signal
Line；152nd, signal lines；153rd, switching transistor；154th, current-to-voltage converting circuit；155th, filter circuit；156th, amplification electricity
Road；157th, counter；158th, timer；16th, light shield layer；17th, line layer；18th, sealant；19th, black matrix layer；201st, the first electricity
Pole；202nd, second electrode；203rd, luminescence unit.
Embodiment
For have present in prior art heart rate detecting function mobile display device volume is big, thick and heavy and cost
The problem of high, the utility model embodiment provide a kind of display device.
Below in conjunction with the accompanying drawings, the embodiment of the display device provided the utility model embodiment is carried out in detail
Explanation.The thickness of each film layer and shape do not reflect actual proportions in accompanying drawing, and purpose is schematically illustrate the utility model content.
The utility model embodiment provides a kind of display device, as shown in figure 1, including：Underlay substrate 11, positioned at substrate
Organic elctroluminescent device 12 on substrate 11, the encapsulated layer 13 on organic elctroluminescent device 12, position
Photosensitive layer 14 between underlay substrate 11 and encapsulated layer 13, and photosensitive detection circuit；
Photosensitive layer 14, including：At least one photosensitive detecting electrode 141 being connected with photosensitive detection circuit；
Underlay substrate 11 and encapsulated layer 13 are made up of light transmissive material, the light one that organic elctroluminescent device 12 is emitted
Part is emitted by encapsulated layer 13, and a part is emitted by underlay substrate 11；
Photosensitive detecting electrode 141, sent for detecting the reflection light of skin, and by the photo-signal detected to light
Quick detection circuit；
Photosensitive detection circuit, for the photo-signal detected according to photosensitive detecting electrode 141, determine heart rate information simultaneously
Output.
In the display device that the utility model embodiment provides, underlay substrate 11 and encapsulated layer 13 are made up of transparent material,
And organic elctroluminescent device 12 can be with two-way light extraction, by setting photosensitive layer between underlay substrate 11 and encapsulated layer 13
14, photosensitive layer 14 can by the use of organic elctroluminescent device 12 emergent light or ambient light as light source, without independent
Light source is set, reduces the size of heart rate detection device, and reduce the power consumption of heart rate detection.
In actual applications, reference picture 1, the light (can also be ambient light) that organic elctroluminescent device 12 is emitted
Directive skin 100, the light that light reflects through the various tissues and blood in skin are connect by photosensitive detecting electrode 141
Receive, because the light of directive skin 100 can be by the various tissues and blood absorption inside skin, various tissues are to light in skin
Uptake is basically unchanged, and CBF can change with the bounce of heart, thus blood can be also sent out the uptake of light
Changing, when heartbeat, CBF can increase, and blood can also increase the uptake of light, in the gap of heartbeat, blood
Flow can be reduced, and blood can also reduce to the uptake of light, thus, photosensitive detection circuit can be according to photosensitive detecting electrode 141
The photo-signal detected obtains heart rate value.
In actual applications, above-mentioned underlay substrate 11 and encapsulated layer 13 are made up of light transmissive material, preferably transparent material, example
Such as glass material, can also use with certain light transmission rate material, as long as can printing opacity, this time not to substrate base
The material of plate 11 and encapsulated layer 13 is defined.In addition, the light part that organic elctroluminescent device 12 is emitted passes through
Encapsulated layer 13 is emitted, a part be emitted by underlay substrate 11, i.e., organic elctroluminescent device 12 can two-way light extraction, by
In organic elctroluminescent device 12 can also printing opacity, therefore, photosensitive layer 14 can utilize organic elctroluminescent device
Light source of the light of 12 outgoing as detection heart rate, can also use light source of the ambient light as detection heart rate, without individually setting
Light source is put, reduces the power consumption of heart rate detection, further, since photosensitive layer 14 and photosensitive detection circuit are increase only, photosensitive layer 14
For the film of any two film layer between underlay substrate 11 and encapsulated layer 13, and photosensitive detection circuit can be used as a film
Layer is arranged between underlay substrate 11 and encapsulated layer 13, and photosensitive detection circuit can also be integrated into underlay substrate 11 and encapsulated layer
In some film layer between 13, such as can be by the driving electricity of photosensitive detection circuit and driving organic elctroluminescent device 12
Road is integrated together, thus, the display device in the present embodiment, on the basis of with heart rate detecting function, display device
Volume will not produce great changes, simply somewhat thickening, compared to specific light source (such as increasing LED) is increased, originally
Display device in utility model can significantly reduce the volume of the mobile display device with heart rate detecting function, because
This, the display device in the utility model embodiment has small volume, low in energy consumption, it is lightening the advantages that.
Due to the display device in the utility model embodiment, there is small volume, it is low in energy consumption, it is lightening the advantages that, thus
Preferably it is applied in wearable product, such as bracelet, wrist-watch etc. has in the equipment of sign detection function.
In the specific implementation, above-mentioned organic elctroluminescent device 12 is preferably passive type display of organic electroluminescence
Part (Passive Matrix OLED, PMOLED), reference picture 1,17 line layer for representing display devices in figure, wrap in line layer
Include for driving the luminous drive circuit of each luminescence unit, because the pixel of PMLED devices does not need pixel compensation circuit, thus
The drive circuit that driving PMOLED devices are shown is fairly simple, therefore, it is possible to which above-mentioned photosensitive detection circuit is integrated in into the driving
In circuit, photosensitive detection circuit is set not increase the volume of display device.
Further, in the above-mentioned display device that the utility model embodiment provides, reference picture 1, can also include：It is located at
Photosensitive layer 14 deviates from the light shield layer 16 of the side of underlay substrate 11；
The figure of light shield layer 16 is consistent with the figure of photosensitive layer 14.
By setting light shield layer 16, and the figure and photosensitive layer of light shield layer 16 away from the side of underlay substrate 11 in photosensitive layer 14
14 figure is consistent, thus, light shield layer 16 can block the light from the photosensitive detecting electrode 141 of top directive, for example, blocking hair
Light unit is from the light of the photosensitive detecting electrode 141 of top directive, or blocks ambient light from the photosensitive detecting electrode 141 of top directive
Light, avoid the light of top from being absorbed by photosensitive detecting electrode 141, and influence testing result.It is this practicality to set light shield layer 16
The preferred embodiment of new embodiment, in the specific implementation, light shield layer 16 can also be not provided with, heart rate detection can carried out
Before, the intensity of the light of vertical incidence is detected using photosensitive detecting electrode 141, can be by vertical incidence when calculating heart rate
The intensity of light subtract, to reduce influence of this some light to heart rate detection.
Specifically, in the above-mentioned display device that the utility model embodiment provides, above-mentioned organic elctroluminescent device
12, as shown in figure 1, can include：First electrode layer 121, positioned at first electrode layer 121 close to the side of underlay substrate 11 second
Electrode layer 122, and the organic function layer 123 between first electrode layer 121 and the second electrode lay 122；
First electrode layer 121 and the second electrode lay 122 are made up of transparent conductive material.
In the specific implementation, first electrode layer 121 can be arranged to anode, the second electrode lay 122 is arranged to negative electrode,
Or, first electrode layer 121 is arranged to negative electrode, the second electrode lay 122 is arranged to anode.First electrode layer 121 and second electrode
Layer 122 is made up of transparent conductive material, thus, the organic elctroluminescent device 12 can realize two-sided light extraction.
More specifically, in the above-mentioned display device that the utility model embodiment provides, as shown in Figure 2 a, first electrode layer
121, it can include：The first electrode 201 of a plurality of (direction i.e. in figure shown in arrow a) in the first direction extension；
The second electrode lay 122, including：Second direction (the side i.e. in figure shown in arrow b that a plurality of edge intersects with first direction
To) extension second electrode 202；
Organic function layer 123, including：Luminescence unit at first electrode 201 and the crossover location of second electrode 202
203；
Orthographic projection of the photosensitive detecting electrode 141 with luminescence unit 203 on underlay substrate 11 is not exclusively overlapping.
Referring concurrently to Fig. 1, the light of luminescence unit 203 (such as pixel R in Fig. 1) outgoing is in skin surface oblique incidence, warp
Received after skin reflex by photosensitive detecting electrode 141, if luminescence unit 203 and photosensitive detecting electrode 141 are on underlay substrate 11
Orthographic projection be completely superposed, i.e., luminescence unit 203 is located at the surface of photosensitive detecting electrode 141, then photosensitive detecting electrode 141 is just
The light that luminescence unit 203 is emitted downwards can be blocked, thus the light that luminescence unit 203 is emitted is not easy directive skin, also
The light intensity for being the reflected light for saying the skin that photosensitive detecting electrode 141 is able to detect that can be very faint, so as to influence heart rate detection
As a result, therefore, in the utility model embodiment, photosensitive detecting electrode 141 and positive throwing of the luminescence unit 203 on underlay substrate 11
Shadow is preferably not exclusively to overlap.
Luminescence unit 203 is located at the crossover location of first electrode 201 and second electrode 202, to first electrode 201 and
After two electrodes 202 apply signal, the light of respective strengths can be launched according to the size of signal by being in the crossed position the pixel cell at place
Line.
In the specific implementation, the photosensitive detecting electrode 141 in above-mentioned photosensitive layer 14 has a variety of distribution modes, below in conjunction with
Accompanying drawing is described in detail：
Mode one：
As shown in Figure 2 a, above-mentioned photosensitive layer 14, can include：The multiple photosensitive detecting electrodes 141 being arranged in array；
Orthographic projection of each photosensitive detecting electrode 141 on underlay substrate 11, with each first electrode 201, each second electrode 202
And orthographic projection of each luminescence unit 203 on underlay substrate 11 be not overlapping.
Reference picture 2a, orthographic projection of the photosensitive detecting electrode 141 on underlay substrate 11, with first electrode 201, second electrode
202 and orthographic projection of the luminescence unit 203 on underlay substrate 11 it is not overlapping, i.e., photosensitive detecting electrode 141 is positioned at the first electricity
Pole 201, the gap location of second electrode 202, so, photosensitive detecting electrode 141 and luminescence unit 203 on underlay substrate 11 just
Misaligned, to be emitted luminescence unit 203 light directive skin as much as possible is projected, thus, Photoelectric Detection electrode receives
Skin reflected light intensity it is stronger, obtained testing result is more accurate.
Multiple photosensitive detecting electrodes 141 are arranged in a manner of array arrangement as shown in Figure 2 a, detected specifically
Cheng Zhong, the signal wire that driving organic elctroluminescent device 12 is shown can be multiplexed, realizes photosensitive detecting electrode 141
Heart rate detection, thus the quantity of wire can be reduced, reduce the cost of display device.
In the specific implementation, above-mentioned photosensitive detecting electrode 141 could be arranged to various shapes, such as the side shown in Fig. 2 a
Shape or circle, ellipse or polygon etc., the shape of photosensitive detecting electrode 141 is not defined this time.
Mode two：
As shown in Figure 2 b, above-mentioned photosensitive layer 14, can include：The photosensitive detecting electrode 141 of multiple strips being arranged side by side；
The photosensitive detecting electrode 141 extends along the first direction, and with the first electrode 201 in the substrate base
Orthographic projection on plate 11 is misaligned, and as shown in Figure 2 b, such as photosensitive detecting electrode 141 can be located at two adjacent first electrodes
Between 201；Or,
The photosensitive detecting electrode 141 extends along the second direction, and with the second electrode 202 in the substrate base
Orthographic projection on plate 11 is misaligned, and as shown in Figure 2 c, such as photosensitive detecting electrode 141 can be located at two adjacent second electrodes
Between 202.
Photosensitive detecting electrode 141 is arranged to strip, thus the light that a photosensitive detecting electrode 141 can receive is more
More, the photo-signal that so photosensitive detecting electrode 141 detects is stronger, testing result is not susceptible to the factors such as noise and does
Disturb, obtained testing result is more accurate.
Mode three：
As shown in Figure 2 d, above-mentioned photosensitive layer 14, can include：The photosensitive detecting electrode 141 that one whole face is set；
Photosensitive detecting electrode 141 is set in the orthographic projection region overlapping with each luminescence unit 203 for hollow out.
Photosensitive 141 whole face of detecting electrode is set, and the region overlapping with luminescence unit 203 is set for hollow out, such light
The transmitting light that can be received in photosensitive layer 14 is most, i.e., the area that can carry out photosensitive detection maximizes, and makes photosensitive detecting electrode
141 photosignals detected are most strong, are more beneficial for the reading of heart rate signal.
Fig. 3 is the partial enlarged drawing at a photosensitive detecting electrode 141 in Fig. 2 a, reference picture 3, above-mentioned photosensitive detection electricity
Road, it can include：The drive signal line 151 extended in a first direction, the signal lines 152 extended in a second direction, and
Switching transistor 153；Wherein,
The grid G of switching transistor 153 is connected with drive signal line 151, and source S is connected with photosensitive detecting electrode 141, leakage
Pole D is connected with signal lines 152.
When being detected, drive signal line 151 applies voltage to the grid G of switching transistor 153, so that switch crystal
Source S and the drain D conducting of pipe 153, thus the photo-signal that photosensitive detecting electrode 141 detects can pass through detection signal
Line 152 is read.
Referring concurrently to Fig. 2 a, for the structure of photosensitive layer 14 in aforesaid way one, when being detected, successively to each driving
Signal wire 151 inputs open signal, each switching transistor 153 is opened line by line, now, each signal lines 152 can
Get the photo-signal that a photosensitive detecting electrode 141 detects；It can also be inputted simultaneously to multiple drive signal lines 151
Open signal, make multiple switch transistor 153 while open, now, each signal lines 152 are able to detect that multiple light
The summation for the photo-signal that quick detecting electrode 141 detects；Similarly, can also be opened to all inputs of drive signal line 151
Signal is opened, each signal lines 152 is able to detect that the photo-signal of the photosensitive detecting electrode 141 of a row.Having
When body is implemented, the type of drive of drive signal line 151 can be determined according to the intensity of light source of heart rate detection, for example, working as light source
Light intensity it is stronger when, can using successively to each drive signal line 151 input open signal by the way of, now, detection letter
Number line 152 reads the photo-signal of a photosensitive detecting electrode 141 with regard to that can obtain heart rate information, without by all drivings
Signal wire 151 inputs open signal；When the light intensity of light source is weaker, can use simultaneously to multiple drive signal lines 151
The mode of open signal is inputted, at most can input open signal, signal lines to all drive signal lines 151 simultaneously
152 signals read are the summation of the photo-signal of multiple photosensitive detecting electrodes 141, are read with increasing signal lines 152
The photo-signal arrived, heart rate information can accurately be also detected in the case where light is weaker so as to realize.
Referring concurrently to Fig. 2 b and Fig. 2 c, for the structure of photosensitive layer 14 in aforesaid way two, when being detected, successively to
Each drive signal line 151 inputs open signal, and now each signal lines 152 can read a photosensitive detecting electrode
141 photo-signal；Open signal can also be inputted to a plurality of drive signal line 151 simultaneously, make each signal lines
152 can read the summation of the photo-signal of a plurality of photosensitive detecting electrode 141, to increase the letter of the acquisition of signal lines 152
Number intensity, be advantageous to the detection of heart rate information；It is similar with above-mentioned analysis, it can be determined according to the intensity of light source of heart rate detection
The type of drive of drive signal line 151, while the bar number for inputting the drive signal of open signal is more, then signal lines 152
The intensity of the photo-signal of acquisition is stronger, is more advantageous to heart rate detection, thus can determine needs according to the intensity of light source
The bar number of the drive signal line 151 of driving simultaneously.
Referring concurrently to Fig. 2 d, because photosensitive 141 whole face of detecting electrode is set, drive signal line can also be now not provided with
151 and the switching transistor 153 that is connected with drive signal line 151, only a signal lines 152 need to be set, when needing to examine
During heart rate measuring, the photo-signal that signal lines 152 receive directly is obtained.
Specifically, in the above-mentioned display device that the utility model embodiment provides, as shown in figure 4, above-mentioned photosensitive detection electricity
Road, it can also include：Current-to-voltage converting circuit 154, the filter circuit 155 being connected with current-to-voltage converting circuit 154, with filter
The amplifying circuit 156 that wave circuit 155 connects, the counter 157 being connected with amplifying circuit 156, and be connected with counter 157
Timer 158；Wherein,
Current-to-voltage converting circuit 154, it is connected with signal lines 152, for the light for detecting signal lines 152
Current signal is converted to voltage signal；
Filter circuit 155, for being filtered processing to voltage signal；
Amplifying circuit 156, for being amplified processing to the voltage signal after filtering process；
Counter 157, for counting under the control of a timer, to obtain heart rate value.
When the light of skin reflex is irradiated on photosensitive detecting electrode 141, formed after being received by photosensitive detecting electrode 141
Photo-signal, photo-signal is transmitted to current-to-voltage converting circuit, Current Voltage conversion electricity by signal lines 152
Photo-signal is converted to voltage signal by stream, and then filter circuit is filtered processing to voltage signal, for example with band logical
The mode of filtering, remove the noise of low frequency and high frequency, then the voltage signal after filtering process is put by amplifying circuit
Greatly, the AC signal with suitable amplitude is obtained, heart rate value can be obtained by rolling counters forward.In actual applications, when need
When detecting heart rate information, photosensitive detection circuit starts (Start Clk) signal to start timer by being inputted to timer,
Timer starts rolling counters forward, and heart rate value is exported after regularly terminating and is exported, obtained heart rate value can be by above-mentioned organic
Electro-luminescence display device 12 is shown.
Further, in the above-mentioned display device that the utility model embodiment provides, above-mentioned drive signal line 151 is also with having
Electroluminescent display part 12 connects, and for showing the period, drives the display picture of organic elctroluminescent device 12,
And in the heart rate detection period, photosensitive detecting electrode 141 is driven to detect photo-signal.
In the utility model embodiment, by the way of time-sharing multiplex, make drive signal line 151 while have driving photosensitive
Detecting electrode 141 detects photo-signal, and the effect of the driving display picture of organic elctroluminescent device 12, so as to
To reduce the quantity of drive signal line 151, moreover, being independent of each other between display picture and heart rate detection, in the same of display picture
When can also carry out heart rate detection.
In the specific implementation, in the above-mentioned display device that the utility model embodiment provides, as shown in Figure 5 and Figure 6, may be used also
With including：Deviate from the black matrix layer 19 of the side of underlay substrate 11 positioned at organic EL display panel；As shown in figure 5, black square
Battle array layer 19 is preferably arranged between first electrode layer 121 and encapsulated layer 13, i.e., black matrix layer 19 is located at the place of sealant 18
Film layer.
Black matrix layer 19 covers a part (region as shown in BM in Fig. 6) for organic elctroluminescent device 12, and
Black matrix layer 19 at least covers a photosensitive detecting electrode 141；
Photosensitive detection circuit, it can also include：Mode switching circuit；
Mode switching circuit, under active optical mode, control to be located at each light in the region that black matrix layer 19 covers
Quick detecting electrode 141 detects photo-signal, and under ambient light patterns, control is beyond the region of black matrix covering
Each photosensitive detecting electrode 141 detects photo-signal.
Reference picture 5, because black matrix layer 19 covers a part for organic elctroluminescent device 12, and black matrix layer 19
A photosensitive detecting electrode 141 is at least covered, in the part that organic elctroluminescent device 12 is not blocked by black matrix layer 19
During display picture, can be covered by the use of black matrix layer 19 under luminescence unit 203 as light source, covered by black matrix under
Photosensitive detecting electrode 141 detect photo-signal, to detect heart rate information, so as to realize display picture and heart rate detection
Carry out simultaneously, without by the way of time-sharing multiplex.
When organic elctroluminescent device 12 is not luminous, the light source of heart rate detection, environment can be used as by the use of ambient light
Light passes through the photosensitive detecting electrode 141 of reflected light directive after display device directive skin, is not hidden by control by black matrix layer 19
The photosensitive detecting electrode 141 of gear detects photo-signal, and then can realize heart rate detection in display device not display picture.
Specifically, above-mentioned active optical mode is the period of organic elctroluminescent device display picture or dormancy, on
It is the period that organic elctroluminescent device is closed to state ambient light patterns.
In actual applications, in some application scenarios, display screen carry out dormancy or it is standby when still need to carry out heart rate detection,
The luminescence unit not blocked by black matrix layer now does not light, and in order to carry out heart rate detection, can only control positioned at black matrix layer
Under luminescence unit it is luminous to provide the light source of heart rate detection, and drive the photosensitive detecting electrode inspection under black matrix layer
Light-metering current signal, to realize heart rate detection；In addition, when ambient light is stronger, all luminescence units can be closed, directly
Using ambient light as the light source of heart rate detection, believed by driving the photosensitive detecting electrode not blocked by black matrix layer to detect photoelectric current
Number, to detect heart rate.Specifically, can be by Setting pattern switching circuit, to realize that organic elctroluminescent device is in sight
Heart rate detection in the case of two kinds of active optical mode and ambient light patterns.
As shown in figure 1, in the above-mentioned display device that the utility model embodiment provides, photosensitive layer 14 can be located at Organic Electricity
Electroluminescent display part 12 is close to the side of underlay substrate 11.So, photosensitive layer 14 and underlay substrate 11 is closer to the distance, i.e. light
Photosensitive layer 14 is closer to the distance with the skin of user, is easier to pass through display device directive photosensitive layer 14 by the light of skin reflex.
Further, in the above-mentioned display device that the utility model embodiment provides, can also include：Positioned at underlay substrate
Line layer 17 between 11 and organic elctroluminescent device 12；
Photosensitive detection circuit is set with line layer 17 with layer；
Photosensitive layer 14 is between organic elctroluminescent device 12 and line layer 17.
In the specific implementation, line layer 17 generally comprises the driving electricity for driving organic elctroluminescent device 12
Road, photosensitive detection circuit and line layer 17 are set with layer, make the display device will not because adding photosensitive detection circuit and
Volume is caused to increase.
Photosensitive layer 14 is arranged between organic elctroluminescent device 12 and line layer 17, can make photosensitive layer 14 away from
It is relatively near from line layer 17, the photo-signal that photosensitive layer 14 detects is transmitted to photosensitive detection electricity so as to be relatively easy to
Road, moreover, photosensitive layer 14 and underlay substrate 11 is closer to the distance, when detecting heart rate, the light of skin reflex is easier to directive
Photosensitive layer 14.Photosensitive layer 14 is arranged between organic elctroluminescent device 12 and line layer 17, is the utility model reality
The preferred embodiment of example is applied, in the specific implementation, photosensitive layer 14 can also be arranged on to other positions, such as can be arranged on
Between line layer 17 and underlay substrate 11, the position of photosensitive layer 14 is not defined herein.
Specifically, in the above-mentioned display device that the utility model embodiment provides, photosensitive detecting electrode can be by PIN-type half
Conductor material or PN types semi-conducting material are formed.As shown in figure 1, photosensitive detecting electrode 141 is made up of PIN-type semi-conducting material
When, P areas, I areas and the N areas of PIN-type semi-conducting material are preferably to be stacked, similarly, when photosensitive detecting electrode 141 is by PN types
When semi-conducting material is formed, the P areas and N areas of PN type semi-conducting materials can also be stacked.
In the display device that the utility model embodiment provides, underlay substrate and encapsulated layer are made up of transparent material, and are had
Electroluminescent display part can be with two-way light extraction, and by setting photosensitive layer between underlay substrate and encapsulated layer, photosensitive layer can
Using the emergent light by the use of organic elctroluminescent device or ambient light as light source, without being separately provided light source, reduce
The size of heart rate detection device, and reduce the power consumption of heart rate detection.
Obviously, those skilled in the art can carry out various changes and modification without departing from this practicality to the utility model
New spirit and scope.So, if these modifications and variations of the present utility model belong to the utility model claims and
Within the scope of its equivalent technologies, then the utility model is also intended to comprising including these changes and modification.
Claims (15)
- A kind of 1. display device, it is characterised in that including：Underlay substrate, the organic electroluminescent on the underlay substrate Display device, the encapsulated layer on the organic elctroluminescent device, positioned at the underlay substrate and the encapsulation Photosensitive layer between layer, and photosensitive detection circuit；The photosensitive layer, including：At least one photosensitive detecting electrode being connected with the photosensitive detection circuit；The underlay substrate and the encapsulated layer are made up of light transmissive material, the light of the organic elctroluminescent device outgoing A part is emitted by the encapsulated layer, and a part is emitted by the underlay substrate；The photosensitive detecting electrode, sent for detecting the reflection light of skin, and by the photo-signal detected to described Photosensitive detection circuit；The photosensitive detection circuit, for the photo-signal detected according to the photosensitive detecting electrode, determine heart rate information And export.
- 2. display device as claimed in claim 1, it is characterised in that also include：Deviate from the substrate positioned at the photosensitive layer The light shield layer of substrate side；The figure of the light shield layer is consistent with the figure of the photosensitive layer.
- 3. display device as claimed in claim 1, it is characterised in that the organic elctroluminescent device, including：First Electrode layer, the second electrode lay positioned at the first electrode layer close to the underlay substrate side, and positioned at the described first electricity Organic function layer between pole layer and the second electrode lay；The first electrode layer and the second electrode lay are made up of transparent conductive material.
- 4. display device as claimed in claim 3, it is characterised in that the first electrode layer, including：It is a plurality of in the first direction The first electrode of extension；The second electrode lay, including：The second electrode for the second direction extension that a plurality of edge intersects with the first direction；The organic function layer, including：Luminescence unit at the first electrode and the second electrode crossover location；Orthographic projection of the photosensitive detecting electrode with the luminescence unit on the underlay substrate is not exclusively overlapping.
- 5. display device as claimed in claim 4, it is characterised in that the photosensitive layer, including：The multiple institutes being arranged in array State photosensitive detecting electrode；Orthographic projection of each photosensitive detecting electrode on the underlay substrate, with each first electrode, each second electricity The orthographic projection of pole and each luminescence unit on the underlay substrate is not overlapping.
- 6. display device as claimed in claim 4, it is characterised in that the photosensitive layer, including：Multiple strips being arranged side by side The photosensitive detecting electrode；The photosensitive detecting electrode extends along the first direction, and the positive throwing with the first electrode on the underlay substrate Shadow is misaligned；Or,The photosensitive detecting electrode extends along the second direction, and the positive throwing with the second electrode on the underlay substrate Shadow is misaligned.
- 7. display device as claimed in claim 4, it is characterised in that the photosensitive layer, including：One whole face sets described Photosensitive detecting electrode；The photosensitive detecting electrode is set in the orthographic projection region overlapping with each luminescence unit for hollow out.
- 8. display device as claimed in claim 4, it is characterised in that the photosensitive detection circuit, including：Along the first party To the drive signal line of extension, the signal lines extended along the second direction, and switching transistor；Wherein,The grid of the switching transistor is connected with the drive signal line, and source electrode is connected with the photosensitive detecting electrode, drain electrode It is connected with the signal lines.
- 9. display device as claimed in claim 8, it is characterised in that the photosensitive detection circuit, in addition to：Current Voltage turns Circuit is changed, the filter circuit being connected with the current-to-voltage converting circuit, the amplifying circuit being connected with the filter circuit, with institute State the counter of amplifying circuit connection, and the timer being connected with the counter；Wherein,The current-to-voltage converting circuit, it is connected with the signal lines, for the light for detecting the signal lines Current signal is converted to voltage signal；The filter circuit, for being filtered processing to the voltage signal；The amplifying circuit, for being amplified processing to the voltage signal after filtering process；The counter, for being counted under the control of the timer, to obtain heart rate value.
- 10. display device as claimed in claim 8, it is characterised in that the drive signal line is also sent out with the organic electroluminescence Light display device connects, and for showing the period, drives the organic elctroluminescent device display picture, and in the heart Rate detection time section, the driving photosensitive detecting electrode detection photo-signal.
- 11. display device as claimed in claim 8, it is characterised in that also include：Positioned at the ORGANIC ELECTROLUMINESCENCE DISPLAYS face Black matrix layer of the backboard from the underlay substrate side；The black matrix layer covers a part for the organic elctroluminescent device, and the black matrix layer at least covers one Individual photosensitive detecting electrode；The photosensitive detection circuit, in addition to：Mode switching circuit；The mode switching circuit, under active optical mode, control to be each in the region of black matrix layer covering The photosensitive detecting electrode detection photo-signal, and under ambient light patterns, control is positioned at the area of black matrix covering Each photosensitive detecting electrode detection photo-signal beyond domain.
- 12. display device as claimed in claim 11, it is characterised in that the active optical mode is the organic electroluminescent Display device display picture or the period of dormancy, the ambient light patterns are what the organic elctroluminescent device was closed Period.
- 13. the display device as described in any one of claim 1~12, it is characterised in that the photosensitive layer is located at organic electroluminescence Light-emitting display device is close to the side of the underlay substrate.
- 14. display device as claimed in claim 13, it is characterised in that also include：Positioned at the underlay substrate and described have Line layer between electroluminescent display part；The photosensitive detection circuit is set with the line layer with layer；The photosensitive layer is between the organic elctroluminescent device and the line layer.
- 15. the display device as described in any one of claim 1~11, it is characterised in that the photosensitive detecting electrode is by PIN-type Semi-conducting material or PN types semi-conducting material are formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721270071.9U CN207182838U (en) | 2017-09-29 | 2017-09-29 | A kind of display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721270071.9U CN207182838U (en) | 2017-09-29 | 2017-09-29 | A kind of display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207182838U true CN207182838U (en) | 2018-04-03 |
Family
ID=61749759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721270071.9U Active CN207182838U (en) | 2017-09-29 | 2017-09-29 | A kind of display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207182838U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107492317A (en) * | 2017-09-29 | 2017-12-19 | 京东方科技集团股份有限公司 | A kind of display device |
| TWI800850B (en) * | 2021-06-18 | 2023-05-01 | 友達光電股份有限公司 | Display device and manufacturing method thereof |
-
2017
- 2017-09-29 CN CN201721270071.9U patent/CN207182838U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107492317A (en) * | 2017-09-29 | 2017-12-19 | 京东方科技集团股份有限公司 | A kind of display device |
| CN107492317B (en) * | 2017-09-29 | 2024-05-17 | 京东方科技集团股份有限公司 | Display device |
| TWI800850B (en) * | 2021-06-18 | 2023-05-01 | 友達光電股份有限公司 | Display device and manufacturing method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107492317A (en) | A kind of display device | |
| CN206757648U (en) | Biological identification device and electronic installation | |
| CN207182838U (en) | A kind of display device | |
| CN107680988A (en) | A kind of display panel and electronic equipment | |
| CN107145868A (en) | Display module | |
| CN108415188A (en) | A kind of liquid crystal display panel, display device and its unlocked by fingerprint method | |
| CN206401320U (en) | Organic light-emitting diode (OLED) display screen fingerprint identification device and electronic equipment | |
| CN106611170A (en) | Fingerprint recognition device and electronic equipment | |
| CN209460748U (en) | Display module and electronic equipment | |
| US10817089B2 (en) | Display component and method for manufacturing the same, display device | |
| CN106778485A (en) | Fingerprint recognition module, device, driving method and display device | |
| CN104637976B (en) | Organic Light Emitting Diode touch control display device | |
| WO2005109507A3 (en) | Oled display with composite photosensor | |
| CN101960372A (en) | Display device with photosensor | |
| CN206515839U (en) | Organic light-emitting diode (OLED) display screen fingerprint identification device and electronic equipment | |
| CN207282497U (en) | A kind of image sensing cell, imaging sensor and display device | |
| CN107958185A (en) | The biological information method for sensing of display module | |
| CN107958186A (en) | Electronic equipment | |
| CN109426022A (en) | Display module | |
| CN107613164A (en) | A kind of camera module and mobile terminal with fingerprint identification function | |
| CN107946338A (en) | Display module and electronic equipment | |
| CN107247925A (en) | Display module | |
| CN109416279B (en) | UV dosimeter with color change | |
| CN106648213A (en) | Display panel, electronic device, and drive method | |
| CN210245499U (en) | Display panel and display terminal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |